diff options
Diffstat (limited to 'extras/vcl-ldpreload/src/libvcl-ldpreload')
| -rw-r--r-- | extras/vcl-ldpreload/src/libvcl-ldpreload/vcom.c | 3331 | ||||
| -rw-r--r-- | extras/vcl-ldpreload/src/libvcl-ldpreload/vcom.h | 204 | ||||
| -rw-r--r-- | extras/vcl-ldpreload/src/libvcl-ldpreload/vcom_glibc_socket.h | 351 | ||||
| -rw-r--r-- | extras/vcl-ldpreload/src/libvcl-ldpreload/vcom_socket.c | 3447 | ||||
| -rw-r--r-- | extras/vcl-ldpreload/src/libvcl-ldpreload/vcom_socket.h | 470 | ||||
| -rw-r--r-- | extras/vcl-ldpreload/src/libvcl-ldpreload/vcom_socket_wrapper.c | 906 | ||||
| -rw-r--r-- | extras/vcl-ldpreload/src/libvcl-ldpreload/vcom_socket_wrapper.h | 235 |
7 files changed, 0 insertions, 8944 deletions
diff --git a/extras/vcl-ldpreload/src/libvcl-ldpreload/vcom.c b/extras/vcl-ldpreload/src/libvcl-ldpreload/vcom.c deleted file mode 100644 index 6ddb245b421..00000000000 --- a/extras/vcl-ldpreload/src/libvcl-ldpreload/vcom.c +++ /dev/null @@ -1,3331 +0,0 @@ -/* - * Copyright (c) 2016 Cisco and/or its affiliates. - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at: - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ -#include <unistd.h> -#include <stdio.h> -#include <signal.h> -#include <dlfcn.h> -#include <pthread.h> -#include <time.h> -#include <stdarg.h> -#include <sys/resource.h> - -#include <libvcl-ldpreload/vcom_socket_wrapper.h> -#include <libvcl-ldpreload/vcom.h> -#include <sys/time.h> - -#include <uri/vppcom.h> -#include <libvcl-ldpreload/vcom_socket.h> - -/* GCC have printf type attribute check. */ -#ifdef HAVE_FUNCTION_ATTRIBUTE_FORMAT -#define PRINTF_ATTRIBUTE(a,b) \ - __attribute__ ((__format__ (__printf__, a, b))) -#else -#define PRINTF_ATTRIBUTE(a,b) -#endif /* HAVE_FUNCTION_ATTRIBUTE_FORMAT */ - -#define HAVE_CONSTRUCTOR_ATTRIBUTE -#ifdef HAVE_CONSTRUCTOR_ATTRIBUTE -#define CONSTRUCTOR_ATTRIBUTE \ - __attribute__ ((constructor)) -#else -#define CONSTRUCTOR_ATTRIBUTE -#endif /* HAVE_CONSTRUCTOR_ATTRIBUTE */ - -#define HAVE_DESTRUCTOR_ATTRIBUTE -#ifdef HAVE_DESTRUCTOR_ATTRIBUTE -#define DESTRUCTOR_ATTRIBUTE \ - __attribute__ ((destructor)) -#else -#define DESTRUCTOR_ATTRIBUTE -#endif - -#define HAVE_ADDRESS_SANITIZER_ATTRIBUTE -#ifdef HAVE_ADDRESS_SANITIZER_ATTRIBUTE -#define DO_NOT_SANITIZE_ADDRESS_ATTRIBUTE \ - __attribute__((no_sanitize_address)) -#else -#define DO_NOT_SANITIZE_ADDRESS_ATTRIBUTE -#endif - -#define VCOM_SOCKET_FD_MAX 0x10000 - -static char vcom_app_name[MAX_VCOM_APP_NAME]; - -/* - * RETURN: 0 on success or -1 on error. - * */ -int -vcom_set_app_name (char *__app_name) -{ - return snprintf (vcom_app_name, MAX_VCOM_APP_NAME, "vcom-%s-%d", - __app_name, getpid ()) < 0 ? -1 : 0; -} - -static char * -vcom_get_app_name () -{ - if (vcom_app_name[0] == '\0') - { - snprintf (vcom_app_name, MAX_VCOM_APP_NAME, "vcom-app-%d", getpid ()); - } - return vcom_app_name; -} - -/* - * 1 if init, 0 otherwise - */ -static int is_vcom_init; - -/* - * TBD: Make it thread safe - */ - -/* - * constructor function called before main is called - * RETURN: 0 on success -1 on failure - * */ -static inline int -vcom_init () -{ - pid_t pid = getpid (); - - if (!is_vcom_init) - { - if (vppcom_app_create (vcom_get_app_name ()) != 0) - { - printf ("\n[%d] vcom_init...failed!\n", pid); - if (VCOM_DEBUG > 0) - fprintf (stderr, - "[%d] vcom_init: vppcom_app_create failed!\n", pid); - return -1; - } - if (vcom_socket_main_init () != 0) - { - printf ("\n[%d] vcom_init...failed!\n", pid); - if (VCOM_DEBUG > 0) - fprintf (stderr, - "[%d] vcom_init: vcom_socket_main_init failed!\n", pid); - return -1; - } - - is_vcom_init = 1; - printf ("\n[%d] vcom_init...done!\n", pid); - } - return 0; -} - -static inline void -vcom_destroy (void) -{ - pid_t pid = getpid (); - - if (is_vcom_init) - { - vcom_socket_main_destroy (); - vppcom_app_destroy (); - is_vcom_init = 0; - fprintf (stderr, "\n[%d] vcom_destroy...done!\n", pid); - } -} - -static inline int -is_vcom_socket_fd (int fd) -{ - return vcom_socket_is_vcom_fd (fd); -} - -static inline int -is_vcom_epfd (int epfd) -{ - return vcom_socket_is_vcom_epfd (epfd); -} - - -/* - * - * Generic glibc fd api - * - */ - -/* Close the file descriptor FD. - - This function is a cancellation point and therefore - not marked with __THROW. */ -/* - * PRE: is_vcom_socket_fd(__fd) == 1 - * RETURN: 0 on success and -1 for errors. - * */ -int -vcom_close (int __fd) -{ - if (vcom_init () != 0) - { - return -1; - } - - if (vcom_socket_close (__fd) != 0) - { - return -1; - } - - return 0; -} - -/* - * RETURN: 0 on success, or -1 on error - */ -int -close (int __fd) -{ - int rv; - pid_t pid = getpid (); - - if (is_vcom_socket_fd (__fd) || is_vcom_epfd (__fd)) - { - if (VCOM_DEBUG > 0) - vcom_socket_main_show (); - rv = vcom_close (__fd); - if (VCOM_DEBUG > 0) - fprintf (stderr, "[%d] close: " "'%04d'='%04d'\n", pid, rv, __fd); - if (VCOM_DEBUG > 0) - vcom_socket_main_show (); - if (rv != 0) - { - errno = -rv; - return -1; - } - return 0; - } - return libc_close (__fd); -} - -/* Read NBYTES into BUF from FD. Return the - number read, -1 for errors or 0 for EOF. - - This function is a cancellation point and therefore - not marked with __THROW. */ -ssize_t -vcom_read (int __fd, void *__buf, size_t __nbytes) -{ - if (vcom_init () != 0) - { - return -1; - } - - return vcom_socket_read (__fd, __buf, __nbytes); -} - -ssize_t -read (int __fd, void *__buf, size_t __nbytes) -{ - ssize_t size = 0; - pid_t pid = getpid (); - pthread_t tid = pthread_self (); - - if (is_vcom_socket_fd (__fd)) - { - if (VCOM_DEBUG > 2) - fprintf (stderr, - "[%d][%lu (0x%lx)] read:1 " - "'%04d'='%04d', '%p', '%04d'\n", - pid, (unsigned long) tid, (unsigned long) tid, - (int) size, __fd, __buf, (int) __nbytes); - size = vcom_read (__fd, __buf, __nbytes); - if (VCOM_DEBUG > 2) - fprintf (stderr, - "[%d][%lu (0x%lx)] read:2 " - "'%04d'='%04d', '%p', '%04d'\n", - pid, (unsigned long) tid, (unsigned long) tid, - (int) size, __fd, __buf, (int) __nbytes); - if (size < 0) - { - errno = -size; - return -1; - } - return size; - } - return libc_read (__fd, __buf, __nbytes); -} - -ssize_t -vcom_readv (int __fd, const struct iovec * __iov, int __iovcnt) -{ - if (vcom_init () != 0) - { - return -1; - } - - return vcom_socket_readv (__fd, __iov, __iovcnt); -} - -ssize_t -readv (int __fd, const struct iovec * __iov, int __iovcnt) -{ - ssize_t size = 0; - - if (is_vcom_socket_fd (__fd)) - { - size = vcom_readv (__fd, __iov, __iovcnt); - if (size < 0) - { - errno = -size; - return -1; - } - return size; - } - else - return libc_readv (__fd, __iov, __iovcnt); -} - -/* Write N bytes of BUF to FD. Return the number written, or -1. - - This function is a cancellation point and therefore - not marked with __THROW. */ -ssize_t -vcom_write (int __fd, const void *__buf, size_t __n) -{ - if (vcom_init () != 0) - { - return -1; - } - - return vcom_socket_write (__fd, (void *) __buf, __n); -} - -ssize_t -write (int __fd, const void *__buf, size_t __n) -{ - ssize_t size = 0; - pid_t pid = getpid (); - pthread_t tid = pthread_self (); - - if (is_vcom_socket_fd (__fd)) - { - if (VCOM_DEBUG > 2) - fprintf (stderr, - "[%d][%lu (0x%lx)] write:1 " - "'%04d'='%04d', '%p', '%04d'\n", - pid, (unsigned long) tid, (unsigned long) tid, - (int) size, __fd, __buf, (int) __n); - size = vcom_write (__fd, __buf, __n); - if (VCOM_DEBUG > 2) - fprintf (stderr, - "[%d][%lu (0x%lx)] write:2 " - "'%04d'='%04d', '%p', '%04d'\n", - pid, (unsigned long) tid, (unsigned long) tid, - (int) size, __fd, __buf, (int) __n); - if (size < 0) - { - errno = -size; - return -1; - } - return size; - } - return libc_write (__fd, __buf, __n); -} - -ssize_t -vcom_writev (int __fd, const struct iovec * __iov, int __iovcnt) -{ - if (vcom_init () != 0) - { - return -1; - } - - return vcom_socket_writev (__fd, __iov, __iovcnt); -} - -ssize_t -writev (int __fd, const struct iovec * __iov, int __iovcnt) -{ - ssize_t size = 0; - - if (is_vcom_socket_fd (__fd)) - { - size = vcom_writev (__fd, __iov, __iovcnt); - if (size < 0) - { - errno = -size; - return -1; - } - return size; - } - else - return libc_writev (__fd, __iov, __iovcnt); -} - -/* Do the file control operation described by CMD on FD. - The remaining arguments are interpreted depending on CMD. - - This function is a cancellation point and therefore - not marked with __THROW. */ -int -vcom_fcntl_va (int __fd, int __cmd, va_list __ap) -{ - if (vcom_init () != 0) - { - return -1; - } - - return vcom_socket_fcntl_va (__fd, __cmd, __ap); -} - -int -vcom_fcntl (int __fd, int __cmd, ...) -{ - int rv = -1; - va_list ap; - - if (is_vcom_socket_fd (__fd)) - { - va_start (ap, __cmd); - rv = vcom_fcntl_va (__fd, __cmd, ap); - va_end (ap); - } - return rv; -} - -int -fcntl (int __fd, int __cmd, ...) -{ - int rv; - va_list ap; - pid_t pid = getpid (); - - va_start (ap, __cmd); - if (is_vcom_socket_fd (__fd)) - { - rv = vcom_fcntl_va (__fd, __cmd, ap); - if (VCOM_DEBUG > 0) - fprintf (stderr, - "[%d] fcntl: " - "'%04d'='%04d', '%04d'\n", pid, rv, __fd, __cmd); - if (rv < 0) - { - errno = -rv; - rv = -1; - } - goto out; - } - rv = libc_vfcntl (__fd, __cmd, ap); - -out: - va_end (ap); - return rv; -} - -int -vcom_ioctl_va (int __fd, unsigned long int __cmd, va_list __ap) -{ - if (vcom_init () != 0) - { - return -1; - } - - return vcom_socket_ioctl_va (__fd, __cmd, __ap); -} - -int -vcom_ioctl (int __fd, unsigned long int __cmd, ...) -{ - int rv = -1; - va_list ap; - - if (is_vcom_socket_fd (__fd)) - { - va_start (ap, __cmd); - rv = vcom_ioctl_va (__fd, __cmd, ap); - va_end (ap); - } - return rv; -} - -int -ioctl (int __fd, unsigned long int __cmd, ...) -{ - int rv; - va_list ap; - pid_t pid = getpid (); - - va_start (ap, __cmd); - if (is_vcom_socket_fd (__fd)) - { - rv = vcom_ioctl_va (__fd, __cmd, ap); - if (VCOM_DEBUG > 0) - fprintf (stderr, - "[%d] ioctl: " - "'%04d'='%04d', '%04ld'\n", pid, rv, __fd, __cmd); - if (rv < 0) - { - errno = -rv; - rv = -1; - } - goto out; - } - rv = libc_vioctl (__fd, __cmd, ap); - -out: - va_end (ap); - return rv; -} - -/* - * Check the first NFDS descriptors each in READFDS (if not NULL) for - * read readiness, in WRITEFDS (if not NULL) for write readiness, - * and in EXCEPTFDS (if not NULL) for exceptional conditions. - * If TIMEOUT is not NULL, time out after waiting the interval - * specified therein. Returns the number of ready descriptors, - * or -1 for errors. - * - * This function is a cancellation point and therefore not marked - * with __THROW. - * */ - -/* - * clear all vcom FDs from fd_sets __readfds, __writefds and - * __exceptfds and update the new nfds - * - * new nfds is the highest-numbered file descriptor - * in any of the three sets, plus 1 - * - * Return the number of file descriptors contained in the - * three descriptor sets. ie. the total number of the bits - * that are set in __readfds, __writefds and __exceptfds - */ -static inline int -vcom_fd_clear (int __nfds, - int *__new_nfds, - fd_set * __restrict __readfds, - fd_set * __restrict __writefds, - fd_set * __restrict __exceptfds) -{ - int fd; - /* invalid max_fd is -1 */ - int max_fd = -1; - int nfd = 0; - - - /* clear all vcom fd from the sets */ - for (fd = 0; fd < __nfds; fd++) - { - - /* clear vcom fd from set */ - /* - * F fd set - */ -#define _(F) \ - if ((F) && FD_ISSET (fd, (F))) \ - { \ - if (is_vcom_socket_fd (fd)) \ - { \ - FD_CLR (fd, (F)); \ - } \ - } - - - _(__readfds); - _(__writefds); - _(__exceptfds); -#undef _ - } - - /* - * compute nfd and __new_nfds - */ - for (fd = 0; fd < __nfds; fd++) - { - - /* - * F fd set - */ -#define _(F) \ - if ((F) && FD_ISSET (fd, (F))) \ - { \ - if (fd > max_fd) \ - { \ - max_fd = fd; \ - } \ - ++nfd; \ - } - - - _(__readfds); - _(__writefds); - _(__exceptfds); -#undef _ - } - - *__new_nfds = max_fd != -1 ? max_fd + 1 : 0; - return nfd; -} - -/* - * Return the number of file descriptors contained in the - * three descriptor sets. ie. the total number of the bits - * that are set in __readfds, __writefds and __exceptfds - */ -static inline int -vcom_fd_set (int __nfds, - /* dest */ - int *__new_nfds, - fd_set * __restrict __readfds, - fd_set * __restrict __writefds, fd_set * __restrict __exceptfds, - /* src */ - fd_set * __restrict __saved_readfds, - fd_set * __restrict __saved_writefds, - fd_set * __restrict __saved_exceptfds) -{ - int fd; - /* invalid max_fd is -1 */ - int max_fd = -1; - int nfd = 0; - - for (fd = 0; fd < __nfds; fd++) - { - /* - * F fd set - * S saved fd set - */ -#define _(S,F) \ - if ((F) && (S) && FD_ISSET (fd, (S))) \ - { \ - if (is_vcom_socket_fd (fd)) \ - { \ - FD_SET (fd, (F)); \ - } \ - } - - - _(__saved_readfds, __readfds); - _(__saved_writefds, __writefds); -#undef _ - } - - - /* - * compute nfd and __new_nfds - */ - for (fd = 0; fd < __nfds; fd++) - { - - /* - * F fd set - */ -#define _(F) \ - if ((F) && FD_ISSET (fd, (F))) \ - { \ - if (fd > max_fd) \ - { \ - max_fd = fd; \ - } \ - ++nfd; \ - } - - - _(__readfds); - _(__writefds); - _(__exceptfds); -#undef _ - } - - *__new_nfds = max_fd != -1 ? max_fd + 1 : 0; - return nfd; -} - -/* - * split select sets(src) into - * vcom sets(dest1) and libc sets(dest2) - */ -static inline void -vcom_fd_set_split ( - /* src, select sets */ - int nfds, - fd_set * __restrict readfds, - fd_set * __restrict writefds, - fd_set * __restrict exceptfds, - /* dest1, vcom sets */ - int *vcom_nfds, - fd_set * __restrict vcom_readfds, - fd_set * __restrict vcom_writefds, - fd_set * __restrict vcom_exceptfds, int *vcom_nfd, - /* dest2, libc sets */ - int *libc_nfds, - fd_set * __restrict libc_readfds, - fd_set * __restrict libc_writefds, - fd_set * __restrict libc_exceptfds, int *libc_nfd) -{ - int fd; - - /* vcom */ - /* invalid max_fd is -1 */ - int vcom_max_fd = -1; - int vcom_nfd2 = 0; - - /* libc */ - /* invalid max_fd is -1 */ - int libc_max_fd = -1; - int libc_nfd2 = 0; - - - for (fd = 0; fd < nfds; fd++) - { - /* - * S select fd set - * V vcom fd set - * L libc fd set - */ -#define _(S,V,L) \ - if ((S) && FD_ISSET (fd, (S))) \ - { \ - if (is_vcom_socket_fd (fd)) \ - { \ - if ((V)) \ - { \ - FD_SET(fd, (V)); \ - if (fd > vcom_max_fd) \ - { \ - vcom_max_fd = fd; \ - } \ - ++vcom_nfd2; \ - } \ - } \ - else \ - { \ - if ((L)) \ - { \ - FD_SET(fd, (L)); \ - if (fd > libc_max_fd) \ - { \ - libc_max_fd = fd; \ - } \ - ++libc_nfd2; \ - } \ - } \ - } - - - _(readfds, vcom_readfds, libc_readfds); - _(writefds, vcom_writefds, libc_writefds); - _(exceptfds, vcom_exceptfds, libc_exceptfds); -#undef _ - } - - if (vcom_nfds) - *vcom_nfds = vcom_max_fd != -1 ? vcom_max_fd + 1 : 0; - if (vcom_nfd) - *vcom_nfd = vcom_nfd2; - if (libc_nfds) - *libc_nfds = libc_max_fd != -1 ? libc_max_fd + 1 : 0; - if (libc_nfd) - *libc_nfd = libc_nfd2; -} - -/* - * merge vcom sets(src1) and libc sets(src2) - * into select sets(dest) - */ -static inline void -vcom_fd_set_merge ( - /* dest, select sets */ - int *nfds, - fd_set * __restrict readfds, - fd_set * __restrict writefds, - fd_set * __restrict exceptfds, int *nfd, - /* src1, vcom sets */ - int vcom_nfds, - fd_set * __restrict vcom_readfds, - fd_set * __restrict vcom_writefds, - fd_set * __restrict vcom_exceptfds, int vcom_nfd, - /* src2, libc sets */ - int libc_nfds, - fd_set * __restrict libc_readfds, - fd_set * __restrict libc_writefds, - fd_set * __restrict libc_exceptfds, int libc_nfd) -{ - int fd; - /* invalid max_fd is -1 */ - int max_fd = -1; - int nfd2 = 0; - - - /* FD_BIT_OR - * - * dest |= src at current bit index - * update MAX and NFD of dest fd set - * - * - * FS source fd set - * FD dest fd set - * BI bit index - * MAX current max_fd of dest fd sets - * NFD current nfd of dest fd sets - * N nfds of source fd set - */ -#define FD_BIT_OR(FD,FS,BI, \ - MAX,NFD) \ - if ((FS) && (FD) && FD_ISSET ((BI), (FS))) \ - { \ - FD_SET ((BI), (FD)); \ - if ((BI) > (MAX)) \ - { \ - (MAX) = (BI); \ - } \ - ++(NFD); \ - } - - - /* FD_RWE_SET_OR */ - /* - * SR,SW,SE source RWE fd sets - * DR,DW,DE dest RWE fd sets - * BI bit index - * NFDS nfds of source fd sets - * MAX current max_fd of dest fd sets - * NFD current nfd of dest fd sets - */ -#define FD_RWE_SETS_OR(DR,DW,DE, \ - SR,SW,SE, \ - BI,NFDS, \ - MAX,NFD) \ - do \ - { \ - for ((BI) = 0; (BI) < (NFDS); (BI)++) \ - { \ - FD_BIT_OR((DR), (SR), (BI), (MAX), (NFD)); \ - FD_BIT_OR((DW), (SW), (BI), (MAX), (NFD)); \ - FD_BIT_OR((DE), (SE), (BI), (MAX), (NFD)); \ - } \ - } \ - while (0); - - - /* source(vcom) to dest(select) rwe fd sets */ - FD_RWE_SETS_OR (readfds, writefds, exceptfds, - vcom_readfds, vcom_writefds, vcom_exceptfds, - fd, vcom_nfds, max_fd, nfd2); - - /* source(libc) to dest(select) rwe fd sets */ - FD_RWE_SETS_OR (readfds, writefds, exceptfds, - libc_readfds, libc_writefds, libc_exceptfds, - fd, libc_nfds, max_fd, nfd2); - -#undef FD_RWE_SETS_OR -#undef FD_BIT_OR - - if (nfds) - *nfds = max_fd != -1 ? max_fd + 1 : 0; - if (nfd) - *nfd = nfd2; -} - -/* - * RETURN 1 if fds is NULL or empty. 0 otherwise - */ -static inline int -fd_set_iszero (fd_set * __restrict fds) -{ - int fd; - - /* NULL fds */ - if (!fds) - return 1; - - for (fd = 0; fd < FD_SETSIZE; fd++) - { - if (FD_ISSET (fd, fds)) - { - /* non-empty fds */ - return 0; - } - } - /* empty fds */ - return 1; -} - - -/* - * ################ - * kernel time64.h - * ################ - * */ -typedef long int s64; -typedef unsigned long int u64; - -typedef long long int __s64; -typedef unsigned long long int __u64; - -typedef __s64 time64_t; -typedef __u64 timeu64_t; - -/* Parameters used to convert the timespec values: */ -#define MSEC_PER_SEC 1000L -#define USEC_PER_MSEC 1000L -#define NSEC_PER_USEC 1000L -#define NSEC_PER_MSEC 1000000L -#define USEC_PER_SEC 1000000L -#define NSEC_PER_SEC 1000000000L -#define FSEC_PER_SEC 1000000000000000LL - - -/* - * ################ - * kernel time.h - * ################ - * */ - - -#define TIME_T_MAX (time_t)((1UL << ((sizeof(time_t) << 3) - 1)) - 1) - -static inline int -timespec_equal (const struct timespec *a, const struct timespec *b) -{ - return (a->tv_sec == b->tv_sec) && (a->tv_nsec == b->tv_nsec); -} - -/* - * lhs < rhs: return <0 - * lhs == rhs: return 0 - * lhs > rhs: return >0 - */ -static inline int -timespec_compare (const struct timespec *lhs, const struct timespec *rhs) -{ - if (lhs->tv_sec < rhs->tv_sec) - return -1; - if (lhs->tv_sec > rhs->tv_sec) - return 1; - return lhs->tv_nsec - rhs->tv_nsec; -} - -static inline int -timeval_compare (const struct timeval *lhs, const struct timeval *rhs) -{ - if (lhs->tv_sec < rhs->tv_sec) - return -1; - if (lhs->tv_sec > rhs->tv_sec) - return 1; - return lhs->tv_usec - rhs->tv_usec; -} - -extern void set_normalized_timespec (struct timespec *ts, time_t sec, - s64 nsec); - - -static inline struct timespec -timespec_add (struct timespec lhs, struct timespec rhs) -{ - struct timespec ts_delta; - set_normalized_timespec (&ts_delta, lhs.tv_sec + rhs.tv_sec, - lhs.tv_nsec + rhs.tv_nsec); - return ts_delta; -} - -/* - * sub = lhs - rhs, in normalized form - */ -static inline struct timespec -timespec_sub (struct timespec lhs, struct timespec rhs) -{ - struct timespec ts_delta; - set_normalized_timespec (&ts_delta, lhs.tv_sec - rhs.tv_sec, - lhs.tv_nsec - rhs.tv_nsec); - return ts_delta; -} - -/* - * ################ - * kernel time.c - * ################ - * */ - - -/** - * set_normalized_timespec - set timespec sec and nsec parts and normalize - * - * @ts: pointer to timespec variable to be set - * @sec: seconds to set - * @nsec: nanoseconds to set - * - * Set seconds and nanoseconds field of a timespec variable and - * normalize to the timespec storage format - * - * Note: The tv_nsec part is always in the range of - * 0 <= tv_nsec < NSEC_PER_SEC - * For negative values only the tv_sec field is negative ! - */ -void -set_normalized_timespec (struct timespec *ts, time_t sec, s64 nsec) -{ - while (nsec >= NSEC_PER_SEC) - { - /* - * The following asm() prevents the compiler from - * optimising this loop into a modulo operation. See - * also __iter_div_u64_rem() in include/linux/time.h - */ - asm ("":"+rm" (nsec)); - nsec -= NSEC_PER_SEC; - ++sec; - } - while (nsec < 0) - { - asm ("":"+rm" (nsec)); - nsec += NSEC_PER_SEC; - --sec; - } - ts->tv_sec = sec; - ts->tv_nsec = nsec; -} - -#define vcom_timerisvalid(tvp) (!((tvp)->tv_sec < 0 || (tvp)->tv_usec < 0)) - -/* Macros for converting between `struct timeval' and `struct timespec'. */ -#define VCOM_TIMEVAL_TO_TIMESPEC(tv, ts) { \ - (ts)->tv_sec = (tv)->tv_sec; \ - (ts)->tv_nsec = (tv)->tv_usec * 1000; \ -} -#define VCOM_TIMESPEC_TO_TIMEVAL(tv, ts) { \ - (tv)->tv_sec = (ts)->tv_sec; \ - (tv)->tv_usec = (ts)->tv_nsec / 1000; \ -} - -static inline int -vcom_select_impl (int vcom_nfds, fd_set * __restrict vcom_readfds, - fd_set * __restrict vcom_writefds, - fd_set * __restrict vcom_exceptfds, - struct timeval *__restrict timeout) -{ - return vcom_socket_select (vcom_nfds, vcom_readfds, - vcom_writefds, vcom_exceptfds, timeout); -} - -int -vcom_select (int __nfds, fd_set * __restrict __readfds, - fd_set * __restrict __writefds, - fd_set * __restrict __exceptfds, - struct timeval *__restrict __timeout) -{ - int rv; - int rv2 = 0; - pid_t pid = getpid (); - - int timedout = 0; - /* block indefinitely */ - int no_timeout = 0; - int first_clock_gettime_failed = 0; - /* timeout value in units of timespec */ - struct timespec timeout_ts; - struct timespec start_time, now, end_time; - - /* select sets attributes - after merge */ - int new_nfds = 0; - int new_nfd = -1; - - /* vcom */ - int vcom_nfds = 0; - fd_set vcom_readfds; - fd_set vcom_writefds; - fd_set vcom_exceptfds; - int vcom_nfd = -1; - - /* libc */ - int libc_nfds = 0; - fd_set libc_readfds; - fd_set libc_writefds; - fd_set libc_exceptfds; - int libc_nfd = -1; - - /* for polling */ - struct timeval tv = {.tv_sec = 0,.tv_usec = 0 }; - - /* validate __timeout */ - if (__timeout) - { - /* validate tv_sec */ - /* bogus */ - if (!vcom_timerisvalid (__timeout)) - { - rv = -EINVAL; - goto select_done; - } - - /* validate tv_usec */ - /* TBD: */ - /* init timeout_ts */ - VCOM_TIMEVAL_TO_TIMESPEC (__timeout, &timeout_ts); - set_normalized_timespec (&timeout_ts, - timeout_ts.tv_sec, timeout_ts.tv_nsec); - } - - rv = clock_gettime (CLOCK_MONOTONIC, &start_time); - if (rv == -1) - { - rv = -errno; - first_clock_gettime_failed = 1; - goto select_done; - } - - /* init end_time */ - if (__timeout) - { - if (timerisset (__timeout)) - { - end_time = timespec_add (start_time, timeout_ts); - } - else - { - /* - * if both fields of the timeout structure are zero, - * then select returns immediately - * */ - end_time = start_time; - } - } - else - { - /* block indefinitely */ - no_timeout = 1; - } - - - - if (vcom_init () != 0) - { - rv = -1; - goto select_done; - } - - /* validate __nfds */ - if (__nfds < 0 || __nfds > FD_SETSIZE) - { - rv = -EINVAL; - goto select_done; - } - - - /* - * usleep(3) emulation - * */ - - /* call libc_select() with a finite timeout and - * no file descriptors or empty fd sets and - * zero nfds */ - if (__nfds == 0 && - (!__readfds || fd_set_iszero (__readfds)) && - (!__writefds || fd_set_iszero (__writefds)) && - (!__exceptfds || fd_set_iszero (__exceptfds))) - { - if (__timeout) - { - rv = libc_select (__nfds, - __readfds, __writefds, __exceptfds, __timeout); - if (rv == -1) - rv = -errno; - } - else - { - /* TBD: block indefinitely or return -EINVAL */ - rv = -EINVAL; - } - goto select_done; - } - - /* init once before the polling loop */ - - /* zero vcom and libc fd sets */ - /* - * S select fd set - * V vcom fd set - * L libc fd set - */ -#define _(S,V,L) \ - if ((S)) \ - { \ - FD_ZERO ((V)); \ - FD_ZERO ((L)); \ - } - - - _(__readfds, &vcom_readfds, &libc_readfds); - _(__writefds, &vcom_writefds, &libc_writefds); - _(__exceptfds, &vcom_exceptfds, &libc_exceptfds); -#undef _ - new_nfds = 0; - new_nfd = -1; - - vcom_nfds = 0; - vcom_nfd = -1; - libc_nfds = 0; - libc_nfd = -1; - - vcom_fd_set_split ( - /* src, select sets */ - __nfds, __readfds, __writefds, __exceptfds, - /* dest1, vcom sets */ - __readfds || __writefds || __exceptfds ? - &vcom_nfds : NULL, - __readfds ? &vcom_readfds : NULL, - __writefds ? &vcom_writefds : NULL, - __exceptfds ? &vcom_exceptfds : NULL, - __readfds || __writefds || __exceptfds ? - &vcom_nfd : NULL, - /* dest2, libc sets */ - __readfds || __writefds || __exceptfds ? - &libc_nfds : NULL, - __readfds ? &libc_readfds : NULL, - __writefds ? &libc_writefds : NULL, - __exceptfds ? &libc_exceptfds : NULL, - __readfds || __writefds || __exceptfds ? - &libc_nfd : NULL); - - /* - * polling loop - * */ - do - { - new_nfd = -1; - vcom_nfd = -1; - libc_nfd = -1; - - /* - * if both fields of timeval structure are zero, - * vcom_select_impl and libc_select returns immediately. - * useful for polling and ensure fairness among - * file descriptors watched. - */ - - /* for polling */ - tv.tv_sec = 0; - tv.tv_usec = 0; - - /* select on vcom fds */ - if (vcom_nfds) - { - vcom_nfd = vcom_select_impl (vcom_nfds, - __readfds ? &vcom_readfds : NULL, - __writefds ? &vcom_writefds : NULL, - __exceptfds ? &vcom_exceptfds : NULL, - &tv); - if (VCOM_DEBUG > 2) - fprintf (stderr, - "[%d] select vcom: " - "'%04d'='%04d'\n", pid, vcom_nfd, vcom_nfds); - - if (vcom_nfd < 0) - { - rv = vcom_nfd; - goto select_done; - } - } - /* select on libc fds */ - if (libc_nfds) - { - libc_nfd = libc_select (libc_nfds, - __readfds ? &libc_readfds : NULL, - __writefds ? &libc_writefds : NULL, - __exceptfds ? &libc_exceptfds : NULL, &tv); - if (VCOM_DEBUG > 2) - fprintf (stderr, - "[%d] select libc: " - "'%04d'='%04d'\n", pid, libc_nfd, libc_nfds); - - if (libc_nfd < 0) - { - /* tv becomes undefined */ - libc_nfd = errno; - rv = libc_nfd; - goto select_done; - } - } - - /* check if any file descriptors changed status */ - if ((vcom_nfds && vcom_nfd > 0) || (libc_nfds && libc_nfd > 0)) - { - /* zero the sets before merge and exit */ - - /* - * F fd set - */ -#define _(F) \ - if ((F)) \ - { \ - FD_ZERO ((F)); \ - } - - - _(__readfds); - _(__writefds); - _(__exceptfds); -#undef _ - new_nfds = 0; - new_nfd = -1; - - /* - * on exit, sets are modified in place to indicate which - * file descriptors actually changed status - * */ - vcom_fd_set_merge ( - /* dest, select sets */ - __readfds || __writefds || __exceptfds ? - &new_nfds : NULL, - __readfds, - __writefds, - __exceptfds, - __readfds || __writefds || __exceptfds ? - &new_nfd : NULL, - /* src1, vcom sets */ - vcom_nfds, - __readfds ? &vcom_readfds : NULL, - __writefds ? &vcom_writefds : NULL, - __exceptfds ? &vcom_exceptfds : NULL, vcom_nfd, - /* src2, libc sets */ - libc_nfds, - __readfds ? &libc_readfds : NULL, - __writefds ? &libc_writefds : NULL, - __exceptfds ? &libc_exceptfds : NULL, libc_nfd); - /* - * return the number of file descriptors contained in the - * three returned sets - * */ - rv = 0; - /* - * for documentation - * - * if(vcom_nfd > 0) - * rv += vcom_nfd; - * if(libc_nfd > 0) - * rv += libc_nfd; - */ - - rv = new_nfd == -1 ? 0 : new_nfd; - goto select_done; - } - - rv = clock_gettime (CLOCK_MONOTONIC, &now); - if (rv == -1) - { - rv = -errno; - goto select_done; - } - } - while (no_timeout || timespec_compare (&now, &end_time) < 0); - - /* timeout expired before anything interesting happened */ - timedout = 1; - rv = 0; - -select_done: - if (VCOM_DEBUG > 2) - fprintf (stderr, "[%d] vselect1: " "'%04d'='%04d'\n", pid, rv, __nfds); - /* - * modify timeout parameter to reflect the amount of time not slept - * */ - if (__timeout) - { - if (vcom_timerisvalid (__timeout)) - { - /* timeout expired */ - if (timedout) - { - timerclear (__timeout); - } - else if (!first_clock_gettime_failed) - { - rv2 = clock_gettime (CLOCK_MONOTONIC, &now); - if (rv2 == -1) - { - rv = -errno; - } - else - { - struct timespec ts_delta; - ts_delta = timespec_sub (end_time, now); - VCOM_TIMESPEC_TO_TIMEVAL (__timeout, &ts_delta); - } - } - } - } - if (VCOM_DEBUG > 2) - fprintf (stderr, "[%d] vselect2: " "'%04d',='%04d'\n", pid, rv, __nfds); - - return rv; -} - -int -vcom_select_internal (int __nfds, fd_set * __restrict __readfds, - fd_set * __restrict __writefds, - fd_set * __restrict __exceptfds, - struct timeval *__restrict __timeout) -{ - int rv; - int new_nfds = 0; - int nfd = 0; - pid_t pid = getpid (); - - fd_set saved_readfds; - fd_set saved_writefds; - fd_set saved_exceptfds; - - /* validate __nfds */ - if (__nfds < 0) - { - errno = EINVAL; - return -1; - } - - /* validate __timeout */ - if (__timeout) - { - /* validate tv_sec */ - /* bogus */ - if (__timeout->tv_sec < 0 || __timeout->tv_usec < 0) - { - errno = EINVAL; - return -1; - } - - /* validate tv_usec */ - /* TBD: */ - } - - /* init saved_x fds */ - if (__readfds) - { - saved_readfds = *__readfds; - /* - memcpy (&saved_readfds, __readfds, sizeof (*__readfds)); - */ - } - else - { - FD_ZERO (&saved_readfds); - } - - if (__writefds) - { - saved_writefds = *__writefds; - /* - memcpy (&saved_writefds, __writefds, sizeof (*__writefds)); - */ - - } - else - { - FD_ZERO (&saved_writefds); - } - - if (__exceptfds) - { - saved_exceptfds = *__exceptfds; - /* - memcpy (&saved_exceptfds, __exceptfds, sizeof (*__exceptfds)); - */ - - } - else - { - FD_ZERO (&saved_exceptfds); - } - - /* clear vcom fds */ - nfd = vcom_fd_clear (__nfds, &new_nfds, __readfds, __writefds, __exceptfds); - - /* set to an invalid value */ - rv = -2; - /* have kernel fds */ - if (new_nfds) - rv = libc_select (new_nfds, __readfds, - __writefds, __exceptfds, __timeout); - - if (new_nfds && rv == -1) - { - /* on error, the file descriptor sets are unmodified */ - if (__readfds) - *__readfds = saved_readfds; - if (__writefds) - *__writefds = saved_writefds; - if (__exceptfds) - *__exceptfds = saved_exceptfds; - return rv; - } - else if ((new_nfds && rv != -1) || (rv == -2)) - { - /* restore vcom fds */ - nfd = vcom_fd_set (__nfds, - &new_nfds, - __readfds, - __writefds, - __exceptfds, - &saved_readfds, &saved_writefds, &saved_exceptfds); - rv = nfd; - } - - if (VCOM_DEBUG > 0) - fprintf (stderr, "[%d] select: " "'%04d'='%04d'\n", pid, rv, __nfds); - return rv; -} - -int -select (int __nfds, fd_set * __restrict __readfds, - fd_set * __restrict __writefds, - fd_set * __restrict __exceptfds, struct timeval *__restrict __timeout) -{ - int rv = 0; - pid_t pid = getpid (); - - if (VCOM_DEBUG > 2) - fprintf (stderr, "[%d] select1: " "'%04d'='%04d'\n", pid, rv, __nfds); - rv = vcom_select (__nfds, __readfds, __writefds, __exceptfds, __timeout); - if (VCOM_DEBUG > 2) - fprintf (stderr, "[%d] select2: " "'%04d'='%04d'\n", pid, rv, __nfds); - if (rv < 0) - { - errno = -rv; - return -1; - } - return rv; -} - -#ifdef __USE_XOPEN2K -/* - * Same as above only that the TIMEOUT value is given with higher - * resolution and a sigmask which is been set temporarily. This - * version should be used. - * - * This function is a cancellation point and therefore not marked - * with __THROW. - * */ -int -vcom_pselect (int __nfds, fd_set * __restrict __readfds, - fd_set * __restrict __writefds, - fd_set * __restrict __exceptfds, - const struct timespec *__restrict __timeout, - const __sigset_t * __restrict __sigmask) -{ - int fd; - int vcom_nfds = 0; - - for (fd = 0; fd < __nfds; fd++) - { - if (__readfds && FD_ISSET (fd, __readfds)) - { - if (is_vcom_socket_fd (fd)) - { - vcom_nfds++; - } - } - - if (__writefds && FD_ISSET (fd, __writefds)) - { - if (is_vcom_socket_fd (fd)) - { - vcom_nfds++; - } - } - if (__exceptfds && FD_ISSET (fd, __exceptfds)) - { - if (is_vcom_socket_fd (fd)) - { - FD_CLR (fd, __exceptfds); - } - } - } - return vcom_nfds; -} - -int -pselect (int __nfds, fd_set * __restrict __readfds, - fd_set * __restrict __writefds, - fd_set * __restrict __exceptfds, - const struct timespec *__restrict __timeout, - const __sigset_t * __restrict __sigmask) -{ - int rv; - int new_nfds = 0; - int nfd = 0; - pid_t pid = getpid (); - - fd_set saved_readfds; - fd_set saved_writefds; - fd_set saved_exceptfds; - - /* validate __nfds */ - if (__nfds < 0) - { - errno = EINVAL; - return -1; - } - - /* validate __timeout */ - if (__timeout) - { - /* validate tv_sec */ - /* bogus */ - if (__timeout->tv_sec < 0 || __timeout->tv_nsec < 0) - { - errno = EINVAL; - return -1; - } - - /* validate tv_usec */ - /* TBD: */ - } - - /* init saved fds */ - if (__readfds) - { - saved_readfds = *__readfds; - /* - memcpy (&saved_readfds, __readfds, sizeof (*__readfds)); - */ - } - else - { - FD_ZERO (&saved_readfds); - } - - if (__writefds) - { - saved_writefds = *__writefds; - /* - memcpy (&saved_writefds, __writefds, sizeof (*__writefds)); - */ - - } - else - { - FD_ZERO (&saved_writefds); - } - - if (__exceptfds) - { - saved_exceptfds = *__exceptfds; - /* - memcpy (&saved_exceptfds, __exceptfds, sizeof (*__exceptfds)); - */ - - } - else - { - FD_ZERO (&saved_exceptfds); - } - - /* clear vcom fds */ - nfd = vcom_fd_clear (__nfds, &new_nfds, __readfds, __writefds, __exceptfds); - - /* set to an invalid value */ - rv = -2; - if (new_nfds) - rv = libc_pselect (new_nfds, - __readfds, - __writefds, __exceptfds, __timeout, __sigmask); - - if (new_nfds && rv == -1) - { - /* on error, the file descriptor sets are unmodified */ - if (__readfds) - *__readfds = saved_readfds; - if (__writefds) - *__writefds = saved_writefds; - if (__exceptfds) - *__exceptfds = saved_exceptfds; - return rv; - } - else if ((new_nfds && rv != -1) || (rv == -2)) - { - /* restore vcom fds */ - nfd = vcom_fd_set (__nfds, - &new_nfds, - __readfds, - __writefds, - __exceptfds, - &saved_readfds, &saved_writefds, &saved_exceptfds); - rv = nfd; - } - - if (VCOM_DEBUG > 2) - fprintf (stderr, "[%d] pselect: " "'%04d'='%04d'\n", pid, rv, __nfds); - return rv; -} -#endif - -/* - * - * Socket specific glibc api - * - */ - -/* Create a new socket of type TYPE in domain DOMAIN, using - * protocol PROTOCOL. If PROTOCOL is zero, one is chosen - * automatically. Returns a file descriptor for the new socket, - * or -1 for errors. - * RETURN: a valid file descriptor for the new socket, - * or -1 for errors. - * */ - -int -vcom_socket (int __domain, int __type, int __protocol) -{ - if (vcom_init () != 0) - { - return -1; - } - - return vcom_socket_socket (__domain, __type, __protocol); -} - -int -socket (int __domain, int __type, int __protocol) -{ - int rv; - pid_t pid = getpid (); - pthread_t tid = pthread_self (); - - /* handle domains implemented by vpp */ - switch (__domain) - { - case AF_INET: - case AF_INET6: - /* handle types implemented by vpp */ - switch (__type & ~(SOCK_CLOEXEC | SOCK_NONBLOCK)) - { - case SOCK_STREAM: - case SOCK_DGRAM: - if (VCOM_DEBUG > 0) - vcom_socket_main_show (); - rv = vcom_socket (__domain, __type, __protocol); - if (VCOM_DEBUG > 0) - fprintf (stderr, - "[%d][%lu (0x%lx)] socket: " - "'%04d'= D='%04d', T='%04d', P='%04d'\n", - pid, (unsigned long) tid, (unsigned long) tid, - rv, __domain, __type, __protocol); - if (VCOM_DEBUG > 0) - vcom_socket_main_show (); - if (rv < 0) - { - errno = -rv; - return -1; - } - return rv; - break; - - default: - goto CALL_GLIBC_SOCKET_API; - break; - } - - break; - - default: - goto CALL_GLIBC_SOCKET_API; - break; - } - -CALL_GLIBC_SOCKET_API: - return libc_socket (__domain, __type, __protocol); -} - -/* - * Create two new sockets, of type TYPE in domain DOMAIN and using - * protocol PROTOCOL, which are connected to each other, and put file - * descriptors for them in FDS[0] and FDS[1]. If PROTOCOL is zero, - * one will be chosen automatically. - * Returns 0 on success, -1 for errors. - * */ -int -vcom_socketpair (int __domain, int __type, int __protocol, int __fds[2]) -{ - if (vcom_init () != 0) - { - return -1; - } - - return vcom_socket_socketpair (__domain, __type, __protocol, __fds); -} - -int -socketpair (int __domain, int __type, int __protocol, int __fds[2]) -{ - int rv; - pid_t pid = getpid (); - - /* handle domains implemented by vpp */ - switch (__domain) - { - case AF_INET: - case AF_INET6: - /* handle types implemented by vpp */ - switch (__type) - { - case SOCK_STREAM: - case SOCK_DGRAM: - rv = vcom_socketpair (__domain, __type, __protocol, __fds); - if (VCOM_DEBUG > 0) - fprintf (stderr, - "[%d] socketpair: " - "'%04d'= D='%04d', T='%04d', P='%04d'\n", - pid, rv, __domain, __type, __protocol); - if (rv < 0) - { - errno = -rv; - return -1; - } - return 0; - break; - - default: - goto CALL_GLIBC_SOCKET_API; - break; - } - - break; - - default: - goto CALL_GLIBC_SOCKET_API; - break; - } - -CALL_GLIBC_SOCKET_API: - return libc_socketpair (__domain, __type, __protocol, __fds); -} - -/* - * Give the socket FD the local address ADDR - * (which is LEN bytes long). - * */ -int -vcom_bind (int __fd, __CONST_SOCKADDR_ARG __addr, socklen_t __len) -{ - int rv; - - if (vcom_init () != 0) - { - return -1; - } - - /* validate __len */ - switch (__addr->sa_family) - { - case AF_INET: - if (__len != sizeof (struct sockaddr_in)) - return -EINVAL; - break; - case AF_INET6: - if (__len != sizeof (struct sockaddr_in6)) - return -EINVAL; - break; - - default: - return -1; - break; - } - - /* handle domains implemented by vpp */ - switch (__addr->sa_family) - { - case AF_INET: - case AF_INET6: - rv = vcom_socket_bind (__fd, __addr, __len); - return rv; - break; - - default: - return -1; - break; - } - - return -1; -} - -int -bind (int __fd, __CONST_SOCKADDR_ARG __addr, socklen_t __len) -{ - int rv; - pid_t pid = getpid (); - - if (is_vcom_socket_fd (__fd)) - { - - rv = vcom_bind (__fd, __addr, __len); - if (VCOM_DEBUG > 0) - fprintf (stderr, - "[%d] bind: " - "'%04d'='%04d', '%p', '%04d'\n", - pid, rv, __fd, __addr, __len); - if (rv != 0) - { - errno = -rv; - return -1; - } - return 0; - } - return libc_bind (__fd, __addr, __len); -} - -/* - * Put the local address of FD into *ADDR and its length in *LEN. - * */ -int -vcom_getsockname (int __fd, __SOCKADDR_ARG __addr, - socklen_t * __restrict __len) -{ - if (vcom_init () != 0) - { - return -1; - } - - return vcom_socket_getsockname (__fd, __addr, __len); -} - -int -getsockname (int __fd, __SOCKADDR_ARG __addr, socklen_t * __restrict __len) -{ - int rv; - pid_t pid = getpid (); - - if (is_vcom_socket_fd (__fd)) - { - rv = vcom_getsockname (__fd, __addr, __len); - if (VCOM_DEBUG > 0) - fprintf (stderr, - "[%d] getsockname: " - "'%04d'='%04d', '%p', '%p'\n", pid, rv, __fd, __addr, __len); - if (rv != 0) - { - errno = -rv; - return -1; - } - return 0; - } - return libc_getsockname (__fd, __addr, __len); -} - -/* - * Open a connection on socket FD to peer at ADDR - * (which LEN bytes long). For connectionless socket types, just set - * the default address to send to and the only address from which to - * accept transmissions. Return 0 on success, -1 for errors. - * This function is a cancellation point and therefore not marked - * with __THROW. - * */ -int -vcom_connect (int __fd, __CONST_SOCKADDR_ARG __addr, socklen_t __len) -{ - int rv = -1; - - if (vcom_init () != 0) - { - return -1; - } - - /* validate __len */ - switch (__addr->sa_family) - { - case AF_INET: - if (__len != INET_ADDRSTRLEN) - return -1; - break; - case AF_INET6: - if (__len != INET6_ADDRSTRLEN) - return -1; - break; - - default: - return -1; - break; - } - - /* handle domains implemented by vpp */ - switch (__addr->sa_family) - { - case AF_INET: - case AF_INET6: - rv = vcom_socket_connect (__fd, __addr, __len); - break; - - default: - return -1; - break; - } - - return rv; -} - -int -connect (int __fd, __CONST_SOCKADDR_ARG __addr, socklen_t __len) -{ - int rv; - pid_t pid = getpid (); - pthread_t tid = pthread_self (); - - if (is_vcom_socket_fd (__fd)) - { - rv = vcom_connect (__fd, __addr, __len); - if (VCOM_DEBUG > 0) - fprintf (stderr, - "[%d][%lu (0x%lx)] connect: " - "'%04d'='%04d', '%p', '%04d'\n", - pid, (unsigned long) tid, (unsigned long) tid, - rv, __fd, __addr, __len); - if (rv != 0) - { - errno = -rv; - return -1; - } - return 0; - } - - return libc_connect (__fd, __addr, __len); -} - -/* - * Put the address of the peer connected to socket FD into *ADDR - * (which is *LEN bytes long), and its actual length into *LEN. - * */ -int -vcom_getpeername (int __fd, __SOCKADDR_ARG __addr, - socklen_t * __restrict __len) -{ - if (vcom_init () != 0) - { - return -1; - } - - return vcom_socket_getpeername (__fd, __addr, __len); -} - -int -getpeername (int __fd, __SOCKADDR_ARG __addr, socklen_t * __restrict __len) -{ - int rv; - pid_t pid = getpid (); - - if (is_vcom_socket_fd (__fd)) - { - rv = vcom_getpeername (__fd, __addr, __len); - if (VCOM_DEBUG > 0) - fprintf (stderr, - "[%d] getpeername: " - "'%04d'='%04d', '%p', '%p'\n", pid, rv, __fd, __addr, __len); - if (rv != 0) - { - errno = -rv; - return -1; - } - return 0; - } - return libc_getpeername (__fd, __addr, __len); -} - -/* - * Send N bytes of BUF to socket FD. Returns the number sent or -1. - * This function is a cancellation point and therefore not marked - * with __THROW. - * */ -ssize_t -vcom_send (int __fd, const void *__buf, size_t __n, int __flags) -{ - - if (vcom_init () != 0) - { - return -1; - } - - return vcom_socket_send (__fd, (void *) __buf, (int) __n, __flags); -} - -ssize_t -send (int __fd, const void *__buf, size_t __n, int __flags) -{ - ssize_t size; - pid_t pid = getpid (); - - if (is_vcom_socket_fd (__fd)) - { - size = vcom_send (__fd, __buf, __n, __flags); - if (VCOM_DEBUG > 0) - fprintf (stderr, - "[%d] send: " - "'%04d'='%04d', '%p', '%04d', '%04x'\n", - pid, (int) size, __fd, __buf, (int) __n, __flags); - if (size < 0) - { - errno = -size; - return -1; - } - return size; - } - return libc_send (__fd, __buf, __n, __flags); -} - -/* - * Read N bytes into BUF from socket FD. - * Returns the number read or -1 for errors. - * This function is a cancellation point and therefore not marked - * with __THROW. - * */ -ssize_t -vcom_recv (int __fd, void *__buf, size_t __n, int __flags) -{ - if (vcom_init () != 0) - { - return -1; - } - - return vcom_socket_recv (__fd, __buf, __n, __flags); -} - -ssize_t -recv (int __fd, void *__buf, size_t __n, int __flags) -{ - ssize_t size; - pid_t pid = getpid (); - - if (is_vcom_socket_fd (__fd)) - { - size = vcom_recv (__fd, __buf, __n, __flags); - if (VCOM_DEBUG > 0) - fprintf (stderr, - "[%d] recv: " - "'%04d'='%04d', '%p', '%04d', '%04x'\n", - pid, (int) size, __fd, __buf, (int) __n, __flags); - if (size < 0) - { - errno = -size; - return -1; - } - return size; - } - return libc_recv (__fd, __buf, __n, __flags); -} - -/* - * Send N bytes of BUF on socket FD to peer at address ADDR (which is - * ADDR_LEN bytes long). Returns the number sent, or -1 for errors. - * This function is a cancellation point and therefore not marked - * with __THROW. - * */ -ssize_t -vcom_sendto (int __fd, const void *__buf, size_t __n, int __flags, - __CONST_SOCKADDR_ARG __addr, socklen_t __addr_len) -{ - if (vcom_init () != 0) - { - return -1; - } - - return vcom_socket_sendto (__fd, __buf, __n, __flags, __addr, __addr_len); -} - -ssize_t -sendto (int __fd, const void *__buf, size_t __n, int __flags, - __CONST_SOCKADDR_ARG __addr, socklen_t __addr_len) -{ - ssize_t size; - pid_t pid = getpid (); - - if (is_vcom_socket_fd (__fd)) - { - size = vcom_sendto (__fd, __buf, __n, __flags, __addr, __addr_len); - if (VCOM_DEBUG > 0) - fprintf (stderr, - "[%d] sendto: " - "'%04d'='%04d', '%p', '%04d', '%04x', " - "'%p', '%04d'\n", - pid, (int) size, __fd, __buf, (int) __n, __flags, - __addr, __addr_len); - if (size < 0) - { - errno = -size; - return -1; - } - return size; - } - return libc_sendto (__fd, __buf, __n, __flags, __addr, __addr_len); -} - -/* - * Read N bytes into BUF through socket FD. - * If ADDR is not NULL, fill in *ADDR_LEN bytes of it with the - * address of the sender, and store the actual size of the address - * in *ADDR_LEN. - * Returns the number of bytes read or -1 for errors. - * This function is a cancellation point and therefore not marked - * with __THROW. - * */ -ssize_t -vcom_recvfrom (int __fd, void *__restrict __buf, size_t __n, - int __flags, - __SOCKADDR_ARG __addr, socklen_t * __restrict __addr_len) -{ - if (vcom_init () != 0) - { - return -1; - } - - return vcom_socket_recvfrom (__fd, __buf, __n, __flags, __addr, __addr_len); -} - -ssize_t -recvfrom (int __fd, void *__restrict __buf, size_t __n, - int __flags, - __SOCKADDR_ARG __addr, socklen_t * __restrict __addr_len) -{ - ssize_t size; - pid_t pid = getpid (); - - if (is_vcom_socket_fd (__fd)) - { - size = vcom_recvfrom (__fd, __buf, __n, __flags, __addr, __addr_len); - if (VCOM_DEBUG > 0) - fprintf (stderr, - "[%d] recvfrom: " - "'%04d'='%04d', '%p', '%04d', '%04x', " - "'%p', '%p'\n", - pid, (int) size, __fd, __buf, (int) __n, __flags, - __addr, __addr_len); - if (size < 0) - { - errno = -size; - return -1; - } - return size; - } - return libc_recvfrom (__fd, __buf, __n, __flags, __addr, __addr_len); -} - -/* - * Send a message described MESSAGE on socket FD. - * Returns the number of bytes sent, or -1 for errors. - * This function is a cancellation point and therefore not marked - * with __THROW. - * */ -ssize_t -vcom_sendmsg (int __fd, const struct msghdr * __message, int __flags) -{ - if (vcom_init () != 0) - { - return -1; - } - - return vcom_socket_sendmsg (__fd, __message, __flags); -} - -ssize_t -sendmsg (int __fd, const struct msghdr * __message, int __flags) -{ - ssize_t size; - pid_t pid = getpid (); - - if (is_vcom_socket_fd (__fd)) - { - size = vcom_sendmsg (__fd, __message, __flags); - if (VCOM_DEBUG > 0) - fprintf (stderr, - "[%d] sendmsg: " - "'%04d'='%04d', '%p', '%04x'\n", - pid, (int) size, __fd, __message, __flags); - if (size < 0) - { - errno = -size; - return -1; - } - return size; - } - return libc_sendmsg (__fd, __message, __flags); -} - -#ifdef __USE_GNU -/* - * Send a VLEN messages as described by VMESSAGES to socket FD. - * Returns the number of datagrams successfully written - * or -1 for errors. - * This function is a cancellation point and therefore not marked - * with __THROW. - * */ -int -vcom_sendmmsg (int __fd, struct mmsghdr *__vmessages, - unsigned int __vlen, int __flags) -{ - if (vcom_init () != 0) - { - return -1; - } - - return vcom_socket_sendmmsg (__fd, __message, __vlen, __flags); -} - -int -sendmmsg (int __fd, struct mmsghdr *__vmessages, - unsigned int __vlen, int __flags) -{ - ssize_t size; - pid_t pid = getpid (); - - if (is_vcom_socket_fd (__fd)) - { - size = vcom_sendmmsg (__fd, __message, __vlen, __flags); - if (VCOM_DEBUG > 0) - fprintf (stderr, - "[%d] sendmmsg: " - "'%04d'='%04d', '%p', '%04d', '%04x'\n", - pid, (int) size, __fd, __vmessages, __vlen, __flags); - if (size < 0) - { - errno = -size; - return -1; - } - return size; - } - return libc_sendmmsg (__fd, __message, __vlen, __flags); -} - -#endif - -/* - * Receive a message as described by MESSAGE from socket FD. - * Returns the number of bytes read or -1 for errors. - * This function is a cancellation point and therefore not marked - * with __THROW. - * */ -ssize_t -vcom_recvmsg (int __fd, struct msghdr * __message, int __flags) -{ - if (vcom_init () != 0) - { - return -1; - } - - return vcom_socket_recvmsg (__fd, __message, __flags); -} - -ssize_t -recvmsg (int __fd, struct msghdr * __message, int __flags) -{ - ssize_t size; - pid_t pid = getpid (); - - if (is_vcom_socket_fd (__fd)) - { - size = vcom_recvmsg (__fd, __message, __flags); - if (VCOM_DEBUG > 0) - fprintf (stderr, - "[%d] recvmsg: " - "'%04d'='%04d', '%p', '%04x'\n", - pid, (int) size, __fd, __message, __flags); - if (size < 0) - { - errno = -size; - return -1; - } - return size; - } - return libc_recvmsg (__fd, __message, __flags); -} - -#ifdef __USE_GNU -/* - * Receive up to VLEN messages as described by VMESSAGES from socket FD. - * Returns the number of messages received or -1 for errors. - * This function is a cancellation point and therefore not marked - * with __THROW. - * */ -int -vcom_recvmmsg (int __fd, struct mmsghdr *__vmessages, - unsigned int __vlen, int __flags, struct timespec *__tmo) -{ - if (vcom_init () != 0) - { - return -1; - } - - return vcom_socket_recvmmsg (__fd, __message, __vlen, __flags, __tmo); -} - -int -recvmmsg (int __fd, struct mmsghdr *__vmessages, - unsigned int __vlen, int __flags, struct timespec *__tmo) -{ - ssize_t size; - pid_t pid = getpid (); - - if (is_vcom_socket_fd (__fd)) - { - size = vcom_recvmmsg (__fd, __message, __vlen, __flags, __tmo); - if (VCOM_DEBUG > 0) - fprintf (stderr, - "[%d] recvmmsg: " - "'%04d'='%04d', '%p', " - "'%04d', '%04x', '%p'\n", - pid, (int) size, __fd, __vmessages, __vlen, __flags, __tmo); - if (size < 0) - { - errno = -size; - return -1; - } - return size; - } - return libc_recvmmsg (__fd, __message, __vlen, __flags, __tmo); -} - -#endif - -/* - * Put the current value for socket FD's option OPTNAME - * at protocol level LEVEL into OPTVAL (which is *OPTLEN bytes long), - * and set *OPTLEN to the value's actual length. - * Returns 0 on success, -1 for errors. - * */ -int -vcom_getsockopt (int __fd, int __level, int __optname, - void *__restrict __optval, socklen_t * __restrict __optlen) -{ - if (vcom_init () != 0) - { - return -1; - } - - return vcom_socket_getsockopt (__fd, __level, __optname, - __optval, __optlen); -} - -int -getsockopt (int __fd, int __level, int __optname, - void *__restrict __optval, socklen_t * __restrict __optlen) -{ - int rv; - pid_t pid = getpid (); - - if (is_vcom_socket_fd (__fd)) - { - rv = vcom_getsockopt (__fd, __level, __optname, __optval, __optlen); - if (VCOM_DEBUG > 2) - fprintf (stderr, - "[%d] getsockopt: " - "'%04d'='%04d', '%04d', '%04d', " - "'%p', '%p'\n", - pid, rv, __fd, __level, __optname, __optval, __optlen); - if (rv != 0) - { - errno = -rv; - return -1; - } - return 0; - } - return libc_getsockopt (__fd, __level, __optname, __optval, __optlen); -} - -/* - * Set socket FD's option OPTNAME at protocol level LEVEL - * to *OPTVAL (which is OPTLEN bytes long). - * Returns 0 on success, -1 for errors. - * */ -int -vcom_setsockopt (int __fd, int __level, int __optname, - const void *__optval, socklen_t __optlen) -{ - if (vcom_init () != 0) - { - return -1; - } - - return vcom_socket_setsockopt (__fd, __level, __optname, - __optval, __optlen); -} - -int -setsockopt (int __fd, int __level, int __optname, - const void *__optval, socklen_t __optlen) -{ - int rv; - pid_t pid = getpid (); - - if (is_vcom_socket_fd (__fd)) - { - rv = vcom_setsockopt (__fd, __level, __optname, __optval, __optlen); - if (VCOM_DEBUG > 0) - fprintf (stderr, - "[%d] setsockopt: " - "'%04d'='%04d', '%04d', '%04d', " - "'%p', '%04d'\n", - pid, rv, __fd, __level, __optname, __optval, __optlen); - if (rv != 0) - { - errno = -rv; - return -1; - } - return 0; - } - return libc_setsockopt (__fd, __level, __optname, __optval, __optlen); -} - -/* - * Prepare to accept connections on socket FD. - * N connection requests will be queued before further - * requests are refused. - * Returns 0 on success, -1 for errors. - * */ -int -vcom_listen (int __fd, int __n) -{ - if (vcom_init () != 0) - { - return -1; - } - - return vcom_socket_listen (__fd, __n); -} - -int -listen (int __fd, int __n) -{ - int rv; - pid_t pid = getpid (); - - if (is_vcom_socket_fd (__fd)) - { - rv = vcom_listen (__fd, __n); - if (VCOM_DEBUG > 0) - fprintf (stderr, - "[%d] listen: " - "'%04d'='%04d', '%04d'\n", pid, rv, __fd, __n); - if (rv != 0) - { - errno = -rv; - return -1; - } - return 0; - } - return libc_listen (__fd, __n); -} - -/* - * Await a connection on socket FD. - * When a connection arrives, open a new socket to communicate - * with it, set *ADDR (which is *ADDR_LEN bytes long) to the address - * of the connecting peer and *ADDR_LEN to the address's actual - * length, and return the new socket's descriptor, or -1 for errors. - * This function is a cancellation point and therefore not marked - * with __THROW. - * */ -int -vcom_accept (int __fd, __SOCKADDR_ARG __addr, - socklen_t * __restrict __addr_len) -{ - - if (vcom_init () != 0) - { - return -1; - } - return vcom_socket_accept (__fd, __addr, __addr_len); -} - -int -accept (int __fd, __SOCKADDR_ARG __addr, socklen_t * __restrict __addr_len) -{ - int rv = -1; - pid_t pid = getpid (); - pthread_t tid = pthread_self (); - - if (is_vcom_socket_fd (__fd)) - { - if (VCOM_DEBUG > 0) - vcom_socket_main_show (); - if (VCOM_DEBUG > 0) - fprintf (stderr, - "[%d][%lu (0x%lx)] accept1: " - "'%04d'='%04d', '%p', '%p'\n", - pid, (unsigned long) tid, (unsigned long) tid, - rv, __fd, __addr, __addr_len); - rv = vcom_accept (__fd, __addr, __addr_len); - if (VCOM_DEBUG > 0) - fprintf (stderr, - "[%d][%lu (0x%lx)] accept2: " - "'%04d'='%04d', '%p', '%p'\n", - pid, (unsigned long) tid, (unsigned long) tid, - rv, __fd, __addr, __addr_len); - if (VCOM_DEBUG > 0) - vcom_socket_main_show (); - if (rv < 0) - { - errno = -rv; - return -1; - } - return rv; - } - return libc_accept (__fd, __addr, __addr_len); -} - -#ifdef __USE_GNU -/* - * Similar to 'accept' but takes an additional parameter to specify - * flags. - * This function is a cancellation point and therefore not marked - * with __THROW. - * */ -int -vcom_accept4 (int __fd, __SOCKADDR_ARG __addr, - socklen_t * __restrict __addr_len, int __flags) -{ - - if (vcom_init () != 0) - { - return -1; - } - - return vcom_socket_accept4 (__fd, __addr, __addr_len, __flags); -} - -int -accept4 (int __fd, __SOCKADDR_ARG __addr, - socklen_t * __restrict __addr_len, int __flags) -{ - int rv; - pid_t pid = getpid (); - - if (is_vcom_socket_fd (__fd)) - { - if (VCOM_DEBUG > 0) - vcom_socket_main_show (); - rv = vcom_accept4 (__fd, __addr, __addr_len, __flags); - if (VCOM_DEBUG > 0) - fprintf (stderr, - "[%d] accept4: " - "'%04d'='%04d', '%p', '%p', '%04x'\n", - pid, rv, __fd, __addr, __addr_len, __flags); - if (VCOM_DEBUG > 0) - vcom_socket_main_show (); - if (rv < 0) - { - errno = -rv; - return -1; - } - return rv; - } - return libc_accept4 (__fd, __addr, __addr_len, __flags); -} - -#endif - -/* - * Shut down all or part of the connection open on socket FD. - * HOW determines what to shut down: - * SHUT_RD = No more receptions; - * SHUT_WR = No more transmissions; - * SHUT_RDWR = No more receptions or transmissions. - * Returns 0 on success, -1 for errors. - * */ -int -vcom_shutdown (int __fd, int __how) -{ - if (vcom_init () != 0) - { - return -1; - } - return vcom_socket_shutdown (__fd, __how); -} - -int -shutdown (int __fd, int __how) -{ - int rv; - pid_t pid = getpid (); - - if (is_vcom_socket_fd (__fd)) - { - rv = vcom_shutdown (__fd, __how); - if (VCOM_DEBUG > 0) - fprintf (stderr, - "[%d] shutdown: " - "'%04d'='%04d', '%04d'\n", pid, rv, __fd, __how); - if (rv != 0) - { - errno = -rv; - return -1; - } - return 0; - } - return libc_shutdown (__fd, __how); -} - -int -vcom_epoll_create (int __size) -{ - - if (vcom_init () != 0) - { - return -1; - } - - if (__size <= 0) - { - return -EINVAL; - } - - /* __size argument is ignored "thereafter" */ - return vcom_epoll_create1 (0); -} - -/* - * __size argument is ignored, but must be greater than zero - */ -int -epoll_create (int __size) -{ - int rv = 0; - pid_t pid = getpid (); - - rv = vcom_epoll_create (__size); - if (VCOM_DEBUG > 0) - fprintf (stderr, - "[%d] epoll_create: " "'%04d'='%04d'\n", pid, rv, __size); - if (rv < 0) - { - errno = -rv; - return -1; - } - return rv; -} - -int -vcom_epoll_create1 (int __flags) -{ - if (vcom_init () != 0) - { - return -1; - } - - if (__flags < 0) - { - return -EINVAL; - } - if (__flags & ~EPOLL_CLOEXEC) - { - return -EINVAL; - } - /* __flags can be either zero or EPOLL_CLOEXEC */ - /* implementation */ - return vcom_socket_epoll_create1 (__flags); -} - -/* - * __flags can be either zero or EPOLL_CLOEXEC - * */ -int -epoll_create1 (int __flags) -{ - int rv = 0; - pid_t pid = getpid (); - - rv = vcom_epoll_create1 (__flags); - if (VCOM_DEBUG > 0) - fprintf (stderr, - "[%d] epoll_create: " "'%04d'='%08x'\n", pid, rv, __flags); - if (rv < 0) - { - errno = -rv; - return -1; - } - return rv; -} - -static inline int -ep_op_has_event (int op) -{ - return op != EPOLL_CTL_DEL; -} - -int -vcom_epoll_ctl (int __epfd, int __op, int __fd, struct epoll_event *__event) -{ - if (vcom_init () != 0) - { - return -1; - } - - /* - * the requested operation __op is not supported - * by this interface */ - if (!((__op == EPOLL_CTL_ADD) || - (__op == EPOLL_CTL_MOD) || (__op == EPOLL_CTL_DEL))) - { - return -EINVAL; - } - - /* op is ADD or MOD but event parameter is NULL */ - if ((ep_op_has_event (__op) && !__event)) - { - return -EFAULT; - } - - /* fd is same as epfd */ - /* do not permit adding an epoll file descriptor inside itself */ - if (__epfd == __fd) - { - return -EINVAL; - } - - /* implementation */ - return vcom_socket_epoll_ctl (__epfd, __op, __fd, __event); -} - -/* - * implement the controller interface for epoll - * that enables the insertion/removal/change of - * file descriptors inside the interest set. - */ -int -epoll_ctl (int __epfd, int __op, int __fd, struct epoll_event *__event) -{ - int rv; - pid_t pid = getpid (); - - if (is_vcom_epfd (__epfd)) - { - /* TBD: currently limiting epoll to support only vcom fds */ - if (is_vcom_socket_fd (__fd)) - { - rv = vcom_epoll_ctl (__epfd, __op, __fd, __event); - if (VCOM_DEBUG > 0) - fprintf (stderr, - "[%d] epoll_ctl: " - "'%04d'='%04d', '%04d', '%04d'\n", - pid, rv, __epfd, __op, __fd); - if (rv != 0) - { - errno = -rv; - return -1; - } - return 0; - } - else - { - /* - * TBD: currently epoll does not support kernel fds - * or epoll fds */ - errno = EBADF; - return -1; - } - } - else - { - /* epfd is not an epoll file descriptor */ - errno = EINVAL; - return -1; - } - return 0; -} - -int -vcom_epoll_wait (int __epfd, struct epoll_event *__events, - int __maxevents, int __timeout) -{ - if (vcom_init () != 0) - { - return -1; - } - - return vcom_epoll_pwait (__epfd, __events, __maxevents, __timeout, NULL); -} - -int -epoll_wait (int __epfd, struct epoll_event *__events, - int __maxevents, int __timeout) -{ - int rv; - pid_t pid = getpid (); - - if (__maxevents <= 0 || __maxevents > EP_MAX_EVENTS) - { - errno = EINVAL; - return -1; - } - - if (is_vcom_epfd (__epfd)) - { - rv = vcom_epoll_wait (__epfd, __events, __maxevents, __timeout); - if (VCOM_DEBUG > 0) - fprintf (stderr, - "[%d] epoll_wait: " - "'%04d'='%04d', '%p', " - "'%04d', '%04d'\n", - pid, rv, __epfd, __events, __maxevents, __timeout); - if (rv < 0) - { - errno = -rv; - return -1; - } - return rv; - } - else - { - errno = EINVAL; - return -1; - } - return 0; -} - - -int -vcom_epoll_pwait (int __epfd, struct epoll_event *__events, - int __maxevents, int __timeout, const __sigset_t * __ss) -{ - if (vcom_init () != 0) - { - return -1; - } - - /* implementation */ - return vcom_socket_epoll_pwait (__epfd, __events, - __maxevents, __timeout, __ss); -} - -int -epoll_pwait (int __epfd, struct epoll_event *__events, - int __maxevents, int __timeout, const __sigset_t * __ss) -{ - int rv; - pid_t pid = getpid (); - - if (__maxevents <= 0 || __maxevents > EP_MAX_EVENTS) - { - errno = EINVAL; - return -1; - } - - if (is_vcom_epfd (__epfd)) - { - rv = vcom_epoll_pwait (__epfd, __events, __maxevents, __timeout, __ss); - if (VCOM_DEBUG > 0) - fprintf (stderr, - "[%d] epoll_pwait: " - "'%04d'='%04d', '%p', " - "'%04d', '%04d', " - "'%p'\n", - pid, rv, __epfd, __events, __maxevents, __timeout, __ss); - if (rv < 0) - { - errno = -rv; - return -1; - } - return rv; - } - else - { - errno = EINVAL; - return -1; - } - - return 0; -} - -/* Poll the file descriptors described by the NFDS structures starting at - FDS. If TIMEOUT is nonzero and not -1, allow TIMEOUT milliseconds for - an event to occur; if TIMEOUT is -1, block until an event occurs. - Returns the number of file descriptors with events, zero if timed out, - or -1 for errors. - - This function is a cancellation point and therefore not marked with - __THROW. */ - -int -vcom_poll (struct pollfd *__fds, nfds_t __nfds, int __timeout) -{ - int rv = 0; - pid_t pid = getpid (); - - struct rlimit nofile_limit; - struct pollfd vcom_fds[MAX_POLL_NFDS_DEFAULT]; - nfds_t fds_idx = 0; - - /* actual set of file descriptors to be monitored */ - nfds_t libc_nfds = 0; - nfds_t vcom_nfds = 0; - - /* ready file descriptors - * - * number of structures which have nonzero revents fields - * in other words, descriptors with events or errors reported. - * */ - /* after call to libc_poll () */ - int rlibc_nfds = 0; - /* after call to vcom_socket_poll () */ - int rvcom_nfds = 0; - - - /* timeout value in units of timespec */ - struct timespec timeout_ts; - struct timespec start_time, now, end_time; - - - /* get start_time */ - rv = clock_gettime (CLOCK_MONOTONIC, &start_time); - if (rv == -1) - { - rv = -errno; - goto poll_done; - } - - /* set timeout_ts & end_time */ - if (__timeout >= 0) - { - /* set timeout_ts */ - timeout_ts.tv_sec = __timeout / MSEC_PER_SEC; - timeout_ts.tv_nsec = (__timeout % MSEC_PER_SEC) * NSEC_PER_MSEC; - set_normalized_timespec (&timeout_ts, - timeout_ts.tv_sec, timeout_ts.tv_nsec); - /* set end_time */ - if (__timeout) - { - end_time = timespec_add (start_time, timeout_ts); - } - else - { - end_time = start_time; - } - } - - if (vcom_init () != 0) - { - rv = -1; - goto poll_done; - } - - /* validate __fds */ - if (!__fds) - { - rv = -EFAULT; - goto poll_done; - } - - /* validate __nfds */ - /*TBD: call getrlimit once when vcl-ldpreload library is init */ - rv = getrlimit (RLIMIT_NOFILE, &nofile_limit); - if (rv != 0) - { - rv = -errno; - goto poll_done; - } - if (__nfds >= nofile_limit.rlim_cur || __nfds < 0) - { - rv = -EINVAL; - goto poll_done; - } - - /* - * for the POC, it's fair to assume that nfds is less than 1024 - * */ - if (__nfds >= MAX_POLL_NFDS_DEFAULT) - { - rv = -EINVAL; - goto poll_done; - } - - /* set revents field (output parameter) - * to zero - * */ - for (fds_idx = 0; fds_idx < __nfds; fds_idx++) - { - __fds[fds_idx].revents = 0; - } - -#if 0 - /* set revents field (output parameter) - * to zero for user ignored fds - * */ - for (fds_idx = 0; fds_idx < __nfds; fds_idx++) - { - /* - * if negative fd, ignore events field - * and set output parameter (revents field) to zero */ - if (__fds[fds_idx].fd < 0) - { - __fds[fds_idx].revents = 0; - } - } -#endif - - /* - * 00. prepare __fds and vcom_fds for polling - * copy __fds to vcom_fds - * 01. negate all except libc fds in __fds, - * ignore user negated fds - * 02. negate all except vcom_fds in vocm fds, - * ignore user negated fds - * ignore fd 0 by setting it to negative number - * */ - memcpy (vcom_fds, __fds, sizeof (*__fds) * __nfds); - libc_nfds = 0; - vcom_nfds = 0; - for (fds_idx = 0; fds_idx < __nfds; fds_idx++) - { - /* ignore negative fds */ - if (__fds[fds_idx].fd < 0) - { - continue; - } - - /* - * 00. ignore vcom fds in __fds - * 01. ignore libc fds in vcom_fds, - * ignore fd 0 by setting it to negative number. - * as fd 0 cannot be ignored. - */ - if (is_vcom_socket_fd (__fds[fds_idx].fd) || - is_vcom_epfd (__fds[fds_idx].fd)) - { - __fds[fds_idx].fd = -__fds[fds_idx].fd; - vcom_nfds++; - } - else - { - libc_nfds++; - /* ignore fd 0 by setting it to negative number */ - if (!vcom_fds[fds_idx].fd) - { - vcom_fds[fds_idx].fd = -1; - } - vcom_fds[fds_idx].fd = -vcom_fds[fds_idx].fd; - } - } - - /* - * polling loop - * - * poll on libc fds and vcom fds - * - * specifying a timeout of zero causes libc_poll() and - * vcom_socket_poll() to return immediately, even if no - * file descriptors are ready - * */ - do - { - rlibc_nfds = 0; - rvcom_nfds = 0; - - /* - * timeout parameter for libc_poll () set to zero - * to poll on libc fds - * */ - - /* poll on libc fds */ - if (libc_nfds) - { - /* - * a timeout of zero causes libc_poll() - * to return immediately - * */ - rlibc_nfds = libc_poll (__fds, __nfds, 0); - if (VCOM_DEBUG > 2) - fprintf (stderr, - "[%d] poll libc: " - "'%04d'='%08lu'\n", pid, rlibc_nfds, __nfds); - - if (rlibc_nfds < 0) - { - rv = -errno; - goto poll_done_update_nfds; - } - } - - /* - * timeout parameter for vcom_socket_poll () set to zero - * to poll on vcom fds - * */ - - /* poll on vcom fds */ - if (vcom_nfds) - { - /* - * a timeout of zero causes vcom_socket_poll() - * to return immediately - * */ - rvcom_nfds = vcom_socket_poll (vcom_fds, __nfds, 0); - if (VCOM_DEBUG > 2) - fprintf (stderr, - "[%d] poll vcom: " - "'%04d'='%08lu'\n", pid, rvcom_nfds, __nfds); - if (rvcom_nfds < 0) - { - rv = rvcom_nfds; - goto poll_done_update_nfds; - } - } - - /* check if any file descriptors changed status */ - if ((libc_nfds && rlibc_nfds > 0) || (vcom_nfds && rvcom_nfds > 0)) - { - /* something interesting happened */ - rv = rlibc_nfds + rvcom_nfds; - goto poll_done_update_nfds; - } - - rv = clock_gettime (CLOCK_MONOTONIC, &now); - if (rv == -1) - { - rv = -errno; - goto poll_done_update_nfds; - } - } - - /* block indefinitely || timeout elapsed */ - while ((__timeout < 0) || timespec_compare (&now, &end_time) < 0); - - /* timeout expired before anything interesting happened */ - rv = 0; - -poll_done_update_nfds: - for (fds_idx = 0; fds_idx < __nfds; fds_idx++) - { - /* ignore negative fds in vcom_fds - * 00. user negated fds - * 01. libc fds - * */ - if (vcom_fds[fds_idx].fd < 0) - { - continue; - } - - /* from here on handle positive vcom fds */ - /* - * restore vcom fds to positive number in __fds - * and update revents in __fds with the events - * that actually occurred in vcom fds - * */ - __fds[fds_idx].fd = -__fds[fds_idx].fd; - if (rvcom_nfds) - { - __fds[fds_idx].revents = vcom_fds[fds_idx].revents; - } - } - -poll_done: - if (VCOM_DEBUG > 2) - fprintf (stderr, "[%d] vpoll: " "'%04d'='%08lu'\n", pid, rv, __nfds); - return rv; -} - -/* - * 00. The field __fds[i].fd contains a file descriptor for an - * open file. - * If this field is negative, then the corresponding - * events field is ignored and the revents field returns zero. - * The field __fds[i].events is an input parameter. - * The field __fds[i].revents is an output parameter. - * 01. Specifying a negative value in timeout - * means an infinite timeout. - * Specifying a timeout of zero causes poll() to return - * immediately, even if no file descriptors are ready. - * - * NOTE: observed __nfds is less than 128 from kubecon strace files - */ - - -int -poll (struct pollfd *__fds, nfds_t __nfds, int __timeout) -{ - int rv = 0; - pid_t pid = getpid (); - - - if (VCOM_DEBUG > 2) - fprintf (stderr, "[%d] poll1: " "'%04d'='%08lu, %d, 0x%x'\n", - pid, rv, __nfds, __fds[0].fd, __fds[0].events); - rv = vcom_poll (__fds, __nfds, __timeout); - if (VCOM_DEBUG > 2) - fprintf (stderr, "[%d] poll2: " "'%04d'='%08lu, %d, 0x%x'\n", - pid, rv, __nfds, __fds[0].fd, __fds[0].revents); - if (rv < 0) - { - errno = -rv; - return -1; - } - return rv; -} - -#ifdef __USE_GNU -/* Like poll, but before waiting the threads signal mask is replaced - with that specified in the fourth parameter. For better usability, - the timeout value is specified using a TIMESPEC object. - - This function is a cancellation point and therefore not marked with - __THROW. */ -int -vcom_ppoll (struct pollfd *__fds, nfds_t __nfds, - const struct timespec *__timeout, const __sigset_t * __ss) -{ - if (vcom_init () != 0) - { - return -1; - } - - return -EOPNOTSUPP; -} - -int -ppoll (struct pollfd *__fds, nfds_t __nfds, - const struct timespec *__timeout, const __sigset_t * __ss) -{ - int rv = 0; - - errno = EOPNOTSUPP; - rv = -1; - return rv; -} -#endif - -void CONSTRUCTOR_ATTRIBUTE vcom_constructor (void); - -void DESTRUCTOR_ATTRIBUTE vcom_destructor (void); - -void -vcom_constructor (void) -{ - pid_t pid = getpid (); - - swrap_constructor (); - if (vcom_init () != 0) - { - printf ("\n[%d] vcom_constructor...failed!\n", pid); - } - else - { - printf ("\n[%d] vcom_constructor...done!\n", pid); - } -} - -/* - * This function is called when the library is unloaded - */ -void -vcom_destructor (void) -{ - pid_t pid = getpid (); - - vcom_destroy (); - swrap_destructor (); - printf ("\n[%d] vcom_destructor...done!\n", pid); -} - - -/* - * fd.io coding-style-patch-verification: ON - * - * Local Variables: - * eval: (c-set-style "gnu") - * End: - */ diff --git a/extras/vcl-ldpreload/src/libvcl-ldpreload/vcom.h b/extras/vcl-ldpreload/src/libvcl-ldpreload/vcom.h deleted file mode 100644 index 5871b5205b0..00000000000 --- a/extras/vcl-ldpreload/src/libvcl-ldpreload/vcom.h +++ /dev/null @@ -1,204 +0,0 @@ -/* - * Copyright (c) 2017 Cisco and/or its affiliates. - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at: - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -#ifndef included_vcom_h -#define included_vcom_h - -/* VCOM DEBUG flag. Setting this to 1 or 0 turns off - ASSERT & other debugging code. */ -#ifndef VCOM_DEBUG -#define VCOM_DEBUG 0 -#endif - -#include <libvcl-ldpreload/vcom_glibc_socket.h> - -#define MAX_VCOM_APP_NAME 256 - -/* Returns 0 on success or -1 on error. */ -extern int vcom_set_app_name (char *__app_name); - -/* - * - * File descriptor based APIs - * - */ - -/* - * vpp implementation of glibc APIs from <unistd.h> - */ -extern int vcom_close (int __fd); - -extern ssize_t __wur vcom_read (int __fd, void *__buf, size_t __nbytes); - -extern ssize_t __wur vcom_write (int __fd, const void *__buf, size_t __n); - -extern ssize_t __wur vcom_readv (int __fd, const struct iovec *__iov, - int __iovcnt); - -extern ssize_t __wur vcom_writev (int __fd, const struct iovec *__iov, - int __iovcnt); - -/* - * vpp implementation of glibc APIs from <fcntl.h> - */ -extern int vcom_fcntl (int __fd, int __cmd, ...); - -/* - * VPP implementation of glibc APIs ioctl - */ -extern int vcom_ioctl (int __fd, unsigned long int __cmd, ...); - -/* - * vpp implementation of glibc APIs from <sys/select.h> - */ -extern int -vcom_select (int __nfds, fd_set * __restrict __readfds, - fd_set * __restrict __writefds, - fd_set * __restrict __exceptfds, - struct timeval *__restrict __timeout); - -#ifdef __USE_XOPEN2K -extern int -vcom_pselect (int __nfds, fd_set * __restrict __readfds, - fd_set * __restrict __writefds, - fd_set * __restrict __exceptfds, - const struct timespec *__restrict __timeout, - const __sigset_t * __restrict __sigmask); -#endif - -/* - * vpp implementation of glibc APIs from <sys/socket.h> - */ -extern int __THROW vcom_socket (int __domain, int __type, int __protocol); - -/* On Linux, the only supported domain for this call is AF_UNIX -* (or synonymously, AF_LOCAL). Most implementations have the -* same restriction. -* vpp does not implement AF_UNIX domain in this release. -* */ -extern int __THROW -vcom_socketpair (int __domain, int __type, int __protocol, int __fds[2]); - -extern int __THROW -vcom_bind (int __fd, __CONST_SOCKADDR_ARG __addr, socklen_t __len); - -extern int __THROW -vcom_getsockname (int __fd, __SOCKADDR_ARG __addr, - socklen_t * __restrict __len); - -extern int -vcom_connect (int __fd, __CONST_SOCKADDR_ARG __addr, socklen_t __len); - -extern int __THROW -vcom_getpeername (int __fd, __SOCKADDR_ARG __addr, - socklen_t * __restrict __len); - -extern ssize_t -vcom_send (int __fd, const void *__buf, size_t __n, int __flags); - -extern ssize_t vcom_recv (int __fd, void *__buf, size_t __n, int __flags); - -extern ssize_t -vcom_sendto (int __fd, const void *__buf, size_t __n, - int __flags, __CONST_SOCKADDR_ARG __addr, socklen_t __addr_len); - -extern ssize_t -vcom_recvfrom (int __fd, void *__restrict __buf, - size_t __n, int __flags, - __SOCKADDR_ARG __addr, socklen_t * __restrict __addr_len); - -extern ssize_t -vcom_sendmsg (int __fd, const struct msghdr *__message, int __flags); - -#ifdef __USE_GNU -extern int -sendmmsg (int __fd, struct mmsghdr *__vmessages, - unsigned int __vlen, int __flags); -#endif - -extern ssize_t vcom_recvmsg (int __fd, struct msghdr *__message, int __flags); - -#ifdef __USE_GNU -extern int -vcom_recvmmsg (int __fd, struct mmsghdr *__vmessages, - unsigned int __vlen, int __flags, struct timespec *__tmo); -#endif - -extern int __THROW -vcom_getsockopt (int __fd, int __level, int __optname, - void *__restrict __optval, socklen_t * __restrict __optlen); - -extern int __THROW -vcom_setsockopt (int __fd, int __level, int __optname, - const void *__optval, socklen_t __optlen); - -extern int __THROW vcom_listen (int __fd, int __n); - -extern int -vcom_accept (int __fd, __SOCKADDR_ARG __addr, - socklen_t * __restrict __addr_len); - -#ifdef __USE_GNU -/* - * Similar to 'accept' but takes an additional parameter to specify - * flags. - * */ -/* TBD: implemented later */ -extern int -vcom_accept4 (int __fd, __SOCKADDR_ARG __addr, - socklen_t * __restrict __addr_len, int __flags); -#endif - -extern int __THROW vcom_shutdown (int __fd, int __how); - -extern int __THROW vcom_epoll_create (int __size); - -extern int __THROW vcom_epoll_create1 (int __flags); - -extern int __THROW -vcom_epoll_ctl (int __epfd, int __op, int __fd, struct epoll_event *__event); - -extern int -vcom_epoll_wait (int __epfd, struct epoll_event *__events, - int __maxevents, int __timeout); - -extern int -vcom_epoll_pwait (int __epfd, struct epoll_event *__events, - int __maxevents, int __timeout, const __sigset_t * __ss); - -/* - * NOTE: observed __nfds is less than 128 from kubecon strace files - * for the POC, it's fair to assume that nfds is less than 1024. - * TBD: make it thread safe and design to scale. - * */ -#define MAX_POLL_NFDS_DEFAULT 1024 -extern int vcom_poll (struct pollfd *__fds, nfds_t __nfds, int __timeout); - -#ifdef __USE_GNU -extern int -vcom_ppoll (struct pollfd *__fds, nfds_t __nfds, - const struct timespec *__timeout, const __sigset_t * __ss); -#endif - - -#endif /* included_vcom_h */ - -/* - * fd.io coding-style-patch-verification: ON - * - * Local Variables: - * eval: (c-set-style "gnu") - * End: - */ diff --git a/extras/vcl-ldpreload/src/libvcl-ldpreload/vcom_glibc_socket.h b/extras/vcl-ldpreload/src/libvcl-ldpreload/vcom_glibc_socket.h deleted file mode 100644 index 4eb60fb65c7..00000000000 --- a/extras/vcl-ldpreload/src/libvcl-ldpreload/vcom_glibc_socket.h +++ /dev/null @@ -1,351 +0,0 @@ -/* - * Copyright (c) 2017 Cisco and/or its affiliates. - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at: - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -#ifndef included_vcom_glibc_socket_h -#define included_vcom_glibc_socket_h - -#include <sys/types.h> -#include <sys/socket.h> -#include <sys/select.h> -#include <arpa/inet.h> -#include <fcntl.h> - -#include <sys/epoll.h> - -#include <signal.h> -#include <poll.h> - -/* - * - * Generic glibc fd api - * - */ -/* - * glibc APIs from <unistd.h> - */ - -/* Close the file descriptor FD. - - This function is a cancellation point and therefore not marked with - __THROW. */ -extern int close (int __fd); - -/* Read NBYTES into BUF from FD. Return the - number read, -1 for errors or 0 for EOF. - - This function is a cancellation point and therefore not marked with - __THROW. */ -extern ssize_t __wur read (int __fd, void *__buf, size_t __nbytes); - -/* Write N bytes of BUF to FD. Return the number written, or -1. - - This function is a cancellation point and therefore not marked with - __THROW. */ -extern ssize_t __wur write (int __fd, const void *__buf, size_t __n); - - -/* - * glibc APIs from <fcntl.h> - */ - -/* Do the file control operation described by CMD on FD. - The remaining arguments are interpreted depending on CMD. - - This function is a cancellation point and therefore not marked with - __THROW. */ -extern int fcntl (int __fd, int __cmd, ...); - - -/* - * glibc APIs from <sys/select.h> - */ - -/* Check the first NFDS descriptors each in READFDS (if not NULL) for read - readiness, in WRITEFDS (if not NULL) for write readiness, and in EXCEPTFDS - (if not NULL) for exceptional conditions. If TIMEOUT is not NULL, time out - after waiting the interval specified therein. Returns the number of ready - descriptors, or -1 for errors. - - - This function is a cancellation point and therefore not marked with - __THROW. */ -extern int -select (int __nfds, fd_set * __restrict __readfds, - fd_set * __restrict __writefds, - fd_set * __restrict __exceptfds, - struct timeval *__restrict __timeout); - -#ifdef __USE_XOPEN2K -/* Same as above only that the TIMEOUT value is given with higher - resolution and a sigmask which is been set temporarily. This version - should be used. - - This function is a cancellation point and therefore not marked with - __THROW. */ -extern int -pselect (int __nfds, fd_set * __restrict __readfds, - fd_set * __restrict __writefds, - fd_set * __restrict __exceptfds, - const struct timespec *__restrict __timeout, - const __sigset_t * __restrict __sigmask); -#endif - - -/* - * - * Socket specific glibc api - * - */ - -/* - * glibc APIs from <sys/socket.h> - */ - -/* Create a new socket of type TYPE in domain DOMAIN, using - protocol PROTOCOL. If PROTOCOL is zero, one is chosen automatically. - Returns a file descriptor for the new socket, or -1 for errors. */ -extern int __THROW socket (int __domain, int __type, int __protocol); - -/* Create two new sockets, of type TYPE in domain DOMAIN and using - protocol PROTOCOL, which are connected to each other, and put file - descriptors for them in FDS[0] and FDS[1]. If PROTOCOL is zero, - one will be chosen automatically. Returns 0 on success, -1 for errors. */ -extern int __THROW -socketpair (int __domain, int __type, int __protocol, int __fds[2]); - -/* Give the socket FD the local address ADDR (which is LEN bytes long). */ -extern int __THROW -bind (int __fd, __CONST_SOCKADDR_ARG __addr, socklen_t __len); - -/* Put the local address of FD into *ADDR and its length in *LEN. */ -extern int __THROW -getsockname (int __fd, __SOCKADDR_ARG __addr, socklen_t * __restrict __len); - -/* Open a connection on socket FD to peer at ADDR (which LEN bytes long). - For connectionless socket types, just set the default address to send to - and the only address from which to accept transmissions. - Return 0 on success, -1 for errors. - - This function is a cancellation point and therefore not marked with - __THROW. */ -extern int connect (int __fd, __CONST_SOCKADDR_ARG __addr, socklen_t __len); - -/* Put the address of the peer connected to socket FD into *ADDR - (which is *LEN bytes long), and its actual length into *LEN. */ -extern int __THROW -getpeername (int __fd, __SOCKADDR_ARG __addr, socklen_t * __restrict __len); - -/* Send N bytes of BUF to socket FD. Returns the number sent or -1. - - This function is a cancellation point and therefore not marked with - __THROW. */ -extern ssize_t send (int __fd, const void *__buf, size_t __n, int __flags); - -/* Read N bytes into BUF from socket FD. - Returns the number read or -1 for errors. - - This function is a cancellation point and therefore not marked with - __THROW. */ -extern ssize_t recv (int __fd, void *__buf, size_t __n, int __flags); - -/* Send N bytes of BUF on socket FD to peer at address ADDR (which is - ADDR_LEN bytes long). Returns the number sent, or -1 for errors. - - This function is a cancellation point and therefore not marked with - __THROW. */ -extern ssize_t -sendto (int __fd, const void *__buf, size_t __n, - int __flags, __CONST_SOCKADDR_ARG __addr, socklen_t __addr_len); - -/* Read N bytes into BUF through socket FD. - If ADDR is not NULL, fill in *ADDR_LEN bytes of it with tha address of - the sender, and store the actual size of the address in *ADDR_LEN. - Returns the number of bytes read or -1 for errors. - - This function is a cancellation point and therefore not marked with - __THROW. */ -extern ssize_t -recvfrom (int __fd, void *__restrict __buf, - size_t __n, int __flags, - __SOCKADDR_ARG __addr, socklen_t * __restrict __addr_len); - -/* Send a message described MESSAGE on socket FD. - Returns the number of bytes sent, or -1 for errors. - - This function is a cancellation point and therefore not marked with - __THROW. */ -extern ssize_t -sendmsg (int __fd, const struct msghdr *__message, int __flags); - -#ifdef __USE_GNU -/* Send a VLEN messages as described by VMESSAGES to socket FD. - Returns the number of datagrams successfully written or -1 for errors. - - This function is a cancellation point and therefore not marked with - __THROW. */ -extern int -sendmmsg (int __fd, struct mmsghdr *__vmessages, - unsigned int __vlen, int __flags); -#endif - -/* Receive a message as described by MESSAGE from socket FD. - Returns the number of bytes read or -1 for errors. - - This function is a cancellation point and therefore not marked with - __THROW. */ -extern ssize_t recvmsg (int __fd, struct msghdr *__message, int __flags); - -#ifdef __USE_GNU -/* Receive up to VLEN messages as described by VMESSAGES from socket FD. - Returns the number of messages received or -1 for errors. - - This function is a cancellation point and therefore not marked with - __THROW. */ -extern int -recvmmsg (int __fd, struct mmsghdr *__vmessages, - unsigned int __vlen, int __flags, struct timespec *__tmo); -#endif - - -/* Put the current value for socket FD's option OPTNAME at protocol level LEVEL - into OPTVAL (which is *OPTLEN bytes long), and set *OPTLEN to the value's - actual length. Returns 0 on success, -1 for errors. */ -extern int __THROW -getsockopt (int __fd, int __level, int __optname, - void *__restrict __optval, socklen_t * __restrict __optlen); - -/* Set socket FD's option OPTNAME at protocol level LEVEL - to *OPTVAL (which is OPTLEN bytes long). - Returns 0 on success, -1 for errors. */ -extern int __THROW -setsockopt (int __fd, int __level, int __optname, - const void *__optval, socklen_t __optlen); - -/* Prepare to accept connections on socket FD. - N connection requests will be queued before further requests are refused. - Returns 0 on success, -1 for errors. */ -extern int __THROW listen (int __fd, int __n); - -/* Await a connection on socket FD. - When a connection arrives, open a new socket to communicate with it, - set *ADDR (which is *ADDR_LEN bytes long) to the address of the connecting - peer and *ADDR_LEN to the address's actual length, and return the - new socket's descriptor, or -1 for errors. - - This function is a cancellation point and therefore not marked with - __THROW. */ -extern int -accept (int __fd, __SOCKADDR_ARG __addr, socklen_t * __restrict __addr_len); - -#ifdef __USE_GNU -/* Similar to 'accept' but takes an additional parameter to specify flags. - - This function is a cancellation point and therefore not marked with - __THROW. */ - /* TBD: implemented later */ -extern int -accept4 (int __fd, __SOCKADDR_ARG __addr, - socklen_t * __restrict __addr_len, int __flags); -#endif - -/* Shut down all or part of the connection open on socket FD. - HOW determines what to shut down: - SHUT_RD = No more receptions; - SHUT_WR = No more transmissions; - SHUT_RDWR = No more receptions or transmissions. - Returns 0 on success, -1 for errors. */ -extern int __THROW shutdown (int __fd, int __how); - - -/* - * glibc APIs from <sys/epoll.h> - */ - -/* Creates an epoll instance. Returns an fd for the new instance. - The "size" parameter is a hint specifying the number of file - descriptors to be associated with the new instance. The fd - returned by epoll_create() should be closed with close(). */ -extern int __THROW epoll_create (int __size); - -/* Same as epoll_create but with an FLAGS parameter. The unused SIZE - parameter has been dropped. */ -extern int __THROW epoll_create1 (int __flags); - -/* Manipulate an epoll instance "epfd". Returns 0 in case of success, - -1 in case of error ( the "errno" variable will contain the - specific error code ) The "op" parameter is one of the EPOLL_CTL_* - constants defined above. The "fd" parameter is the target of the - operation. The "event" parameter describes which events the caller - is interested in and any associated user data. */ -extern int __THROW -epoll_ctl (int __epfd, int __op, int __fd, struct epoll_event *__event); - -#define EP_INT_MAX ((int)(~0U>>1)) -#define EP_MAX_EVENTS (EP_INT_MAX / sizeof(struct epoll_event)) - -/* Wait for events on an epoll instance "epfd". Returns the number of - triggered events returned in "events" buffer. Or -1 in case of - error with the "errno" variable set to the specific error code. The - "events" parameter is a buffer that will contain triggered - events. The "maxevents" is the maximum number of events to be - returned ( usually size of "events" ). The "timeout" parameter - specifies the maximum wait time in milliseconds (-1 == infinite). - - This function is a cancellation point and therefore not marked with - __THROW. */ -extern int -epoll_wait (int __epfd, struct epoll_event *__events, - int __maxevents, int __timeout); - -/* Same as epoll_wait, but the thread's signal mask is temporarily - and atomically replaced with the one provided as parameter. - - This function is a cancellation point and therefore not marked with - __THROW. */ -extern int -epoll_pwait (int __epfd, struct epoll_event *__events, - int __maxevents, int __timeout, const __sigset_t * __ss); - -/* Poll the file descriptors described by the NFDS structures starting at - FDS. If TIMEOUT is nonzero and not -1, allow TIMEOUT milliseconds for - an event to occur; if TIMEOUT is -1, block until an event occurs. - Returns the number of file descriptors with events, zero if timed out, - or -1 for errors. - - This function is a cancellation point and therefore not marked with - __THROW. */ -extern int poll (struct pollfd *__fds, nfds_t __nfds, int __timeout); - -#ifdef __USE_GNU -/* Like poll, but before waiting the threads signal mask is replaced - with that specified in the fourth parameter. For better usability, - the timeout value is specified using a TIMESPEC object. - - This function is a cancellation point and therefore not marked with - __THROW. */ -extern int ppoll (struct pollfd *__fds, nfds_t __nfds, - const struct timespec *__timeout, const __sigset_t * __ss); -#endif - - -#endif /* included_vcom_glibc_socket_h */ - -/* - * fd.io coding-style-patch-verification: ON - * - * Local Variables: - * eval: (c-set-style "gnu") - * End: - */ diff --git a/extras/vcl-ldpreload/src/libvcl-ldpreload/vcom_socket.c b/extras/vcl-ldpreload/src/libvcl-ldpreload/vcom_socket.c deleted file mode 100644 index 7b5f6c84f83..00000000000 --- a/extras/vcl-ldpreload/src/libvcl-ldpreload/vcom_socket.c +++ /dev/null @@ -1,3447 +0,0 @@ -/* - * Copyright (c) 2016 Cisco and/or its affiliates. - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at: - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ -#include <unistd.h> -#include <stdio.h> -#include <sys/uio.h> -#include <limits.h> -#define __need_IOV_MAX -#include <bits/stdio_lim.h> -#include <netinet/tcp.h> - -#include <vppinfra/types.h> -#include <vppinfra/hash.h> -#include <vppinfra/pool.h> - -#include <libvcl-ldpreload/vcom_socket.h> -#include <libvcl-ldpreload/vcom_socket_wrapper.h> -#include <libvcl-ldpreload/vcom.h> - -#include <uri/vppcom.h> - - -/* - * VCOM_SOCKET Private definitions and functions. - */ - -typedef struct vcom_socket_main_t_ -{ - u8 init; - - /* vcom_socket pool */ - vcom_socket_t *vsockets; - - /* Hash table for socketidx to fd mapping */ - uword *sockidx_by_fd; - - /* vcom_epoll pool */ - vcom_epoll_t *vepolls; - - /* Hash table for epollidx to epfd mapping */ - uword *epollidx_by_epfd; - - - /* common epitem poll for all epfd */ - /* TBD: epitem poll per epfd */ - /* vcom_epitem pool */ - vcom_epitem_t *vepitems; - - /* Hash table for epitemidx to epfdfd mapping */ - uword *epitemidx_by_epfdfd; - - /* Hash table - key:epfd, value:vec of epitemidx */ - uword *epitemidxs_by_epfd; - /* Hash table - key:fd, value:vec of epitemidx */ - uword *epitemidxs_by_fd; - -} vcom_socket_main_t; - -vcom_socket_main_t vcom_socket_main; - - -static int -vcom_socket_open_socket (int domain, int type, int protocol) -{ - int rv = -1; - - /* handle domains implemented by vpp */ - switch (domain) - { - case AF_INET: - case AF_INET6: - /* get socket type and - * handle the socket types supported by vpp */ - switch (type & ~(SOCK_CLOEXEC | SOCK_NONBLOCK)) - { - case SOCK_STREAM: - case SOCK_DGRAM: - /* the type argument serves a second purpose, - * in addition to specifying a socket type, - * it may include the bitwise OR of any of - * SOCK_NONBLOCK and SOCK_CLOEXEC, to modify - * the behavior of socket. */ - rv = libc_socket (domain, type, protocol); - if (rv == -1) - rv = -errno; - break; - - default: - break; - } - - break; - - default: - break; - } - - return rv; -} - -static int -vcom_socket_open_epoll (int flags) -{ - int rv = -1; - - if (flags < 0) - { - return -EINVAL; - } - if (flags && (flags & ~EPOLL_CLOEXEC)) - { - return -EINVAL; - } - - /* flags can be either zero or EPOLL_CLOEXEC */ - rv = libc_epoll_create1 (flags); - if (rv == -1) - rv = -errno; - - return rv; -} - -static int -vcom_socket_close_socket (int fd) -{ - int rv; - - rv = libc_close (fd); - if (rv == -1) - rv = -errno; - - return rv; -} - -static int -vcom_socket_close_epoll (int epfd) -{ - int rv; - - rv = libc_close (epfd); - if (rv == -1) - rv = -errno; - - return rv; -} - -/* - * Public API functions - */ - - -int -vcom_socket_is_vcom_fd (int fd) -{ - vcom_socket_main_t *vsm = &vcom_socket_main; - uword *p; - vcom_socket_t *vsock; - - p = hash_get (vsm->sockidx_by_fd, fd); - - if (p) - { - vsock = pool_elt_at_index (vsm->vsockets, p[0]); - if (vsock && vsock->type == SOCKET_TYPE_VPPCOM_BOUND) - return 1; - } - return 0; -} - -int -vcom_socket_is_vcom_epfd (int epfd) -{ - vcom_socket_main_t *vsm = &vcom_socket_main; - uword *p; - vcom_epoll_t *vepoll; - - p = hash_get (vsm->epollidx_by_epfd, epfd); - - if (p) - { - vepoll = pool_elt_at_index (vsm->vepolls, p[0]); - if (vepoll && vepoll->type == EPOLL_TYPE_VPPCOM_BOUND) - return 1; - } - return 0; -} - -static inline int -vcom_socket_get_sid (int fd) -{ - vcom_socket_main_t *vsm = &vcom_socket_main; - uword *p; - vcom_socket_t *vsock; - - p = hash_get (vsm->sockidx_by_fd, fd); - - if (p) - { - vsock = pool_elt_at_index (vsm->vsockets, p[0]); - if (vsock && vsock->type == SOCKET_TYPE_VPPCOM_BOUND) - return vsock->sid; - } - return INVALID_SESSION_ID; -} - -static inline int -vcom_socket_get_vep_idx (int epfd) -{ - vcom_socket_main_t *vsm = &vcom_socket_main; - uword *p; - vcom_epoll_t *vepoll; - - p = hash_get (vsm->epollidx_by_epfd, epfd); - - if (p) - { - vepoll = pool_elt_at_index (vsm->vepolls, p[0]); - if (vepoll && vepoll->type == EPOLL_TYPE_VPPCOM_BOUND) - return vepoll->vep_idx; - } - return INVALID_VEP_IDX; -} - -static inline int -vcom_socket_get_sid_and_vsock (int fd, vcom_socket_t ** vsockp) -{ - vcom_socket_main_t *vsm = &vcom_socket_main; - uword *p; - vcom_socket_t *vsock; - - p = hash_get (vsm->sockidx_by_fd, fd); - - if (p) - { - vsock = pool_elt_at_index (vsm->vsockets, p[0]); - if (vsock && vsock->type == SOCKET_TYPE_VPPCOM_BOUND) - { - *vsockp = vsock; - return vsock->sid; - } - } - return INVALID_SESSION_ID; -} - -static inline int -vcom_socket_get_vep_idx_and_vepoll (int epfd, vcom_epoll_t ** vepollp) -{ - vcom_socket_main_t *vsm = &vcom_socket_main; - uword *p; - vcom_epoll_t *vepoll; - - p = hash_get (vsm->epollidx_by_epfd, epfd); - - if (p) - { - vepoll = pool_elt_at_index (vsm->vepolls, p[0]); - if (vepoll && vepoll->type == EPOLL_TYPE_VPPCOM_BOUND) - { - *vepollp = vepoll; - return vepoll->vep_idx; - } - } - return INVALID_VEP_IDX; -} - - -static int -vcom_socket_close_vepoll (int epfd) -{ - int rv = -1; - vcom_socket_main_t *vsm = &vcom_socket_main; - uword *p; - vcom_epoll_t *vepoll; - - p = hash_get (vsm->epollidx_by_epfd, epfd); - if (!p) - return -EBADF; - - vepoll = pool_elt_at_index (vsm->vepolls, p[0]); - if (!vepoll) - return -EBADF; - - if (vepoll->type != EPOLL_TYPE_VPPCOM_BOUND) - return -EINVAL; - - if (vepoll->count) - { - if (!vepoll->close) - { - vepoll->close = 1; - return 0; - } - else - { - return -EBADF; - } - } - - /* count is zero */ - rv = vppcom_session_close (vepoll->vep_idx); - rv = vcom_socket_close_epoll (vepoll->epfd); - - vepoll_init (vepoll); - hash_unset (vsm->epollidx_by_epfd, epfd); - pool_put (vsm->vepolls, vepoll); - - return rv; -} - -static int -vcom_socket_close_vsock (int fd) -{ - int rv = -1; - vcom_socket_main_t *vsm = &vcom_socket_main; - uword *p; - vcom_socket_t *vsock; - - vcom_epitem_t *vepitem; - - i32 *vepitemidxs = 0; - i32 *vepitemidxs_var = 0; - - p = hash_get (vsm->sockidx_by_fd, fd); - if (!p) - return -EBADF; - - vsock = pool_elt_at_index (vsm->vsockets, p[0]); - if (!vsock) - return -ENOTSOCK; - - if (vsock->type != SOCKET_TYPE_VPPCOM_BOUND) - return -EINVAL; - - rv = vppcom_session_close (vsock->sid); - rv = vcom_socket_close_socket (vsock->fd); - - vsocket_init (vsock); - hash_unset (vsm->sockidx_by_fd, fd); - pool_put (vsm->vsockets, vsock); - - /* - * NOTE: - * Before calling close(), user should remove - * this fd from the epoll-set of all epoll instances, - * otherwise resource(epitems) leaks ensues. - */ - - /* - * 00. close all epoll instances that are marked as "close" - * of which this fd is the "last" remaining member. - * 01. epitems associated with this fd are intentionally - * not removed, see NOTE: above. - * */ - - /* does this fd participate in epoll */ - p = hash_get (vsm->epitemidxs_by_fd, fd); - if (p) - { - vepitemidxs = *(i32 **) p; - vec_foreach (vepitemidxs_var, vepitemidxs) - { - vepitem = pool_elt_at_index (vsm->vepitems, vepitemidxs_var[0]); - if (vepitem && vepitem->fd == fd && - vepitem->type == FD_TYPE_VCOM_SOCKET) - { - i32 vep_idx; - vcom_epoll_t *vepoll; - if ((vep_idx = - vcom_socket_get_vep_idx_and_vepoll (vepitem->epfd, - &vepoll)) != - INVALID_VEP_IDX) - { - if (vepoll->close) - { - if (vepoll->count == 1) - { - /* - * force count to zero and - * close this epoll instance - * */ - vepoll->count = 0; - vcom_socket_close_vepoll (vepoll->epfd); - } - else - { - vepoll->count -= 1; - } - } - } - } - - } - } - - return rv; -} - -int -vcom_socket_close (int __fd) -{ - int rv; - - if (vcom_socket_is_vcom_fd (__fd)) - { - rv = vcom_socket_close_vsock (__fd); - } - else if (vcom_socket_is_vcom_epfd (__fd)) - { - rv = vcom_socket_close_vepoll (__fd); - } - else - { - rv = -EBADF; - } - - return rv; -} - -ssize_t -vcom_socket_read (int __fd, void *__buf, size_t __nbytes) -{ - int rv = -1; - vcom_socket_main_t *vsm = &vcom_socket_main; - uword *p; - vcom_socket_t *vsock; - - p = hash_get (vsm->sockidx_by_fd, __fd); - if (!p) - return -EBADF; - - vsock = pool_elt_at_index (vsm->vsockets, p[0]); - if (!vsock) - return -ENOTSOCK; - - if (vsock->type != SOCKET_TYPE_VPPCOM_BOUND) - return -EINVAL; - - if (!__buf || __nbytes < 0) - { - return -EINVAL; - } - - rv = vcom_fcntl (__fd, F_GETFL, 0); - if (rv < 0) - { - return rv; - - } - - /* is blocking */ - if (!(rv & O_NONBLOCK)) - { - do - { - rv = vppcom_session_read (vsock->sid, __buf, __nbytes); - } - while (rv == -EAGAIN || rv == -EWOULDBLOCK); - return rv; - } - /* The file descriptor refers to a socket and has been - * marked nonblocking(O_NONBLOCK) and the read would - * block. - * */ - /* is non blocking */ - rv = vppcom_session_read (vsock->sid, __buf, __nbytes); - return rv; -} - -ssize_t -vcom_socket_readv (int __fd, const struct iovec * __iov, int __iovcnt) -{ - int rv; - vcom_socket_main_t *vsm = &vcom_socket_main; - uword *p; - vcom_socket_t *vsock; - ssize_t total = 0, len = 0; - - p = hash_get (vsm->sockidx_by_fd, __fd); - if (!p) - return -EBADF; - - vsock = pool_elt_at_index (vsm->vsockets, p[0]); - if (!vsock) - return -ENOTSOCK; - - if (vsock->type != SOCKET_TYPE_VPPCOM_BOUND) - return -EINVAL; - - if (__iov == 0 || __iovcnt == 0 || __iovcnt > IOV_MAX) - return -EINVAL; - - /* Sanity check */ - for (int i = 0; i < __iovcnt; ++i) - { - if (SSIZE_MAX - len < __iov[i].iov_len) - return -EINVAL; - len += __iov[i].iov_len; - } - - rv = vcom_fcntl (__fd, F_GETFL, 0); - if (rv < 0) - { - return rv; - } - - /* is blocking */ - if (!(rv & O_NONBLOCK)) - { - do - { - for (int i = 0; i < __iovcnt; ++i) - { - rv = vppcom_session_read (vsock->sid, __iov[i].iov_base, - __iov[i].iov_len); - if (rv < 0) - break; - else - { - total += rv; - if (rv < __iov[i].iov_len) - /* Read less than buffer provided, no point to continue */ - break; - } - } - } - while ((rv == -EAGAIN || rv == -EWOULDBLOCK) && total == 0); - return total; - } - - /* is non blocking */ - for (int i = 0; i < __iovcnt; ++i) - { - rv = vppcom_session_read (vsock->sid, __iov[i].iov_base, - __iov[i].iov_len); - if (rv < 0) - { - if (total > 0) - break; - else - { - errno = rv; - return rv; - } - } - else - { - total += rv; - if (rv < __iov[i].iov_len) - /* Read less than buffer provided, no point to continue */ - break; - } - } - return total; -} - -ssize_t -vcom_socket_write (int __fd, const void *__buf, size_t __n) -{ - int rv = -1; - vcom_socket_main_t *vsm = &vcom_socket_main; - uword *p; - vcom_socket_t *vsock; - - p = hash_get (vsm->sockidx_by_fd, __fd); - if (!p) - return -EBADF; - - vsock = pool_elt_at_index (vsm->vsockets, p[0]); - if (!vsock) - return -ENOTSOCK; - - if (vsock->type != SOCKET_TYPE_VPPCOM_BOUND) - return -EINVAL; - - if (!__buf || __n < 0) - { - return -EINVAL; - } - - rv = vppcom_session_write (vsock->sid, (void *) __buf, __n); - return rv; -} - -ssize_t -vcom_socket_writev (int __fd, const struct iovec * __iov, int __iovcnt) -{ - int rv = -1; - ssize_t total = 0; - vcom_socket_main_t *vsm = &vcom_socket_main; - uword *p; - vcom_socket_t *vsock; - - p = hash_get (vsm->sockidx_by_fd, __fd); - if (!p) - return -EBADF; - - vsock = pool_elt_at_index (vsm->vsockets, p[0]); - if (!vsock) - return -ENOTSOCK; - - if (vsock->type != SOCKET_TYPE_VPPCOM_BOUND) - return -EINVAL; - - if (__iov == 0 || __iovcnt == 0 || __iovcnt > IOV_MAX) - return -EINVAL; - - for (int i = 0; i < __iovcnt; ++i) - { - rv = vppcom_session_write (vsock->sid, __iov[i].iov_base, - __iov[i].iov_len); - if (rv < 0) - { - if (total > 0) - break; - else - return rv; - } - else - total += rv; - } - return total; -} - -/* - * RETURN: 0 - invalid cmd - * 1 - cmd not handled by vcom and vppcom - * 2 - cmd handled by vcom socket resource - * 3 - cmd handled by vppcom - * */ -/* TBD: incomplete list of cmd */ -static int -vcom_socket_check_fcntl_cmd (int __cmd) -{ - switch (__cmd) - { - /*cmd not handled by vcom and vppcom */ - /* Fallthrough */ - case F_DUPFD: - case F_DUPFD_CLOEXEC: - return 1; - - /* cmd handled by vcom socket resource */ - /* Fallthrough */ - case F_GETFD: - case F_SETFD: - case F_GETLK: - case F_SETLK: - case F_SETLKW: - case F_GETOWN: - case F_SETOWN: - return 2; - - /* cmd handled by vcom and vppcom */ - case F_SETFL: - case F_GETFL: - return 3; - - /* cmd not handled by vcom and vppcom */ - default: - return 1; - } - return 0; -} - -static inline int -vcom_session_fcntl_va (int __sid, int __cmd, va_list __ap) -{ - int flags = va_arg (__ap, int); - int rv = -EOPNOTSUPP; - uint32_t size; - - size = sizeof (flags); - if (__cmd == F_SETFL) - { - rv = vppcom_session_attr (__sid, VPPCOM_ATTR_SET_FLAGS, &flags, &size); - } - else if (__cmd == F_GETFL) - { - rv = vppcom_session_attr (__sid, VPPCOM_ATTR_GET_FLAGS, &flags, &size); - if (rv == VPPCOM_OK) - rv = flags; - } - - return rv; -} - -int -vcom_socket_fcntl_va (int __fd, int __cmd, va_list __ap) -{ - int rv = -EBADF; - vcom_socket_main_t *vsm = &vcom_socket_main; - uword *p; - vcom_socket_t *vsock; - - p = hash_get (vsm->sockidx_by_fd, __fd); - if (!p) - return -EBADF; - - vsock = pool_elt_at_index (vsm->vsockets, p[0]); - if (!vsock) - return -ENOTSOCK; - - if (vsock->type != SOCKET_TYPE_VPPCOM_BOUND) - return -EINVAL; - - switch (vcom_socket_check_fcntl_cmd (__cmd)) - { - /* invalid cmd */ - case 0: - rv = -EBADF; - break; - /*cmd not handled by vcom and vppcom */ - case 1: - rv = libc_vfcntl (vsock->fd, __cmd, __ap); - break; - /* cmd handled by vcom socket resource */ - case 2: - rv = libc_vfcntl (vsock->fd, __cmd, __ap); - break; - /* cmd handled by vppcom */ - case 3: - rv = vcom_session_fcntl_va (vsock->sid, __cmd, __ap); - break; - - default: - rv = -EINVAL; - break; - } - - return rv; -} - -/* - * RETURN: 0 - invalid cmd - * 1 - cmd not handled by vcom and vppcom - * 2 - cmd handled by vcom socket resource - * 3 - cmd handled by vppcom - */ -static int -vcom_socket_check_ioctl_cmd (unsigned long int __cmd) -{ - int rc; - - switch (__cmd) - { - /* cmd handled by vppcom */ - case FIONREAD: - rc = 3; - break; - - /* cmd not handled by vcom and vppcom */ - default: - rc = 1; - break; - } - return rc; -} - -static inline int -vcom_session_ioctl_va (int __sid, int __cmd, va_list __ap) -{ - int rv; - - if (__cmd == FIONREAD) - rv = vppcom_session_attr (__sid, VPPCOM_ATTR_GET_NREAD, 0, 0); - else - rv = -EOPNOTSUPP; - return rv; -} - -int -vcom_socket_ioctl_va (int __fd, unsigned long int __cmd, va_list __ap) -{ - int rv = -EBADF; - vcom_socket_main_t *vsm = &vcom_socket_main; - uword *p; - vcom_socket_t *vsock; - - p = hash_get (vsm->sockidx_by_fd, __fd); - if (!p) - return -EBADF; - - vsock = pool_elt_at_index (vsm->vsockets, p[0]); - if (!vsock) - return -ENOTSOCK; - - if (vsock->type != SOCKET_TYPE_VPPCOM_BOUND) - return -EINVAL; - - switch (vcom_socket_check_ioctl_cmd (__cmd)) - { - /* Not supported cmd */ - case 0: - rv = -EOPNOTSUPP; - break; - - /* cmd not handled by vcom and vppcom */ - case 1: - rv = libc_vioctl (vsock->fd, __cmd, __ap); - break; - - /* cmd handled by vcom socket resource */ - case 2: - rv = libc_vioctl (vsock->fd, __cmd, __ap); - break; - - /* cmd handled by vppcom */ - case 3: - rv = vcom_session_ioctl_va (vsock->sid, __cmd, __ap); - break; - - default: - rv = -EINVAL; - break; - } - - return rv; -} - -static inline int -vcom_socket_fds_2_sid_fds ( - /* dest */ - int *vcom_nsid_fds, - fd_set * __restrict vcom_rd_sid_fds, - fd_set * __restrict vcom_wr_sid_fds, - fd_set * __restrict vcom_ex_sid_fds, - /* src */ - int vcom_nfds, - fd_set * __restrict vcom_readfds, - fd_set * __restrict vcom_writefds, - fd_set * __restrict vcom_exceptfds) -{ - int rv = 0; - int fd; - int sid; - /* invalid max_sid is -1 */ - int max_sid = -1; - int nsid = 0; - - /* - * set sid in sid sets corresponding to fd's in fd sets - * compute nsid and vcom_nsid_fds from sid sets - */ - - for (fd = 0; fd < vcom_nfds; fd++) - { - /* - * F fd set, src - * S sid set, dest - */ -#define _(S,F) \ - if ((F) && (S) && FD_ISSET (fd, (F))) \ - { \ - sid = vcom_socket_get_sid (fd); \ - if (sid != INVALID_SESSION_ID) \ - { \ - FD_SET (sid, (S)); \ - if (sid > max_sid) \ - { \ - max_sid = sid; \ - } \ - ++nsid; \ - } \ - else \ - { \ - rv = -EBADFD; \ - goto done; \ - } \ - } - - - _(vcom_rd_sid_fds, vcom_readfds); - _(vcom_wr_sid_fds, vcom_writefds); - _(vcom_ex_sid_fds, vcom_exceptfds); -#undef _ - } - - *vcom_nsid_fds = max_sid != -1 ? max_sid + 1 : 0; - rv = nsid; - -done: - return rv; -} - -/* - * PRE: 00. sid sets were derived from fd sets - * 01. sid sets were updated with sids that actually changed - * status - * 02. fd sets still has watched fds - * - * This function will modify in place fd sets to indicate which fd's - * actually changed status(inferred from sid sets) - */ -static inline int -vcom_socket_sid_fds_2_fds ( - /* dest */ - int *new_vcom_nfds, - int vcom_nfds, - fd_set * __restrict vcom_readfds, - fd_set * __restrict vcom_writefds, - fd_set * __restrict vcom_exceptfds, - /* src */ - int vcom_nsid_fds, - fd_set * __restrict vcom_rd_sid_fds, - fd_set * __restrict vcom_wr_sid_fds, - fd_set * __restrict vcom_ex_sid_fds) -{ - int rv = 0; - int fd; - int sid; - /* invalid max_fd is -1 */ - int max_fd = -1; - int nfd = 0; - - - /* - * modify in place fd sets to indicate which fd's - * actually changed status(inferred from sid sets) - */ - for (fd = 0; fd < vcom_nfds; fd++) - { - /* - * F fd set, dest - * S sid set, src - */ -#define _(S,F) \ - if ((F) && (S) && FD_ISSET (fd, (F))) \ - { \ - sid = vcom_socket_get_sid (fd); \ - if (sid != INVALID_SESSION_ID) \ - { \ - if (!FD_ISSET (sid, (S))) \ - { \ - FD_CLR(fd, (F)); \ - } \ - } \ - else \ - { \ - rv = -EBADFD; \ - goto done; \ - } \ - } - - - _(vcom_rd_sid_fds, vcom_readfds); - _(vcom_wr_sid_fds, vcom_writefds); - _(vcom_ex_sid_fds, vcom_exceptfds); -#undef _ - } - - /* - * compute nfd and new_vcom_nfds from fd sets - */ - for (fd = 0; fd < vcom_nfds; fd++) - { - -#define _(F) \ - if ((F) && FD_ISSET (fd, (F))) \ - { \ - if (fd > max_fd) \ - { \ - max_fd = fd; \ - } \ - ++nfd; \ - } - - - _(vcom_readfds); - _(vcom_writefds); - _(vcom_exceptfds); -#undef _ - - } - - *new_vcom_nfds = max_fd != -1 ? max_fd + 1 : 0; - rv = nfd; - -done: - return rv; -} - -/* - * PRE: - * vom_socket_select is always called with - * timeout->tv_sec and timeout->tv_usec set to zero. - * hence vppcom_select return immediately. - */ -/* - * TBD: do{body;} while(timeout conditional); timeout loop - */ -int -vcom_socket_select (int vcom_nfds, fd_set * __restrict vcom_readfds, - fd_set * __restrict vcom_writefds, - fd_set * __restrict vcom_exceptfds, - struct timeval *__restrict timeout) -{ - static unsigned long vcom_nsid_fds = 0; - int vcom_nsid = 0; - int rv = -EBADF; - pid_t pid = getpid (); - - int new_vcom_nfds = 0; - int new_vcom_nfd = 0; - - /* vcom sid fds */ - fd_set vcom_rd_sid_fds; - fd_set vcom_wr_sid_fds; - fd_set vcom_ex_sid_fds; - - /* in seconds eg. 3.123456789 seconds */ - double time_to_wait = (double) 0; - - /* validate inputs */ - if (vcom_nfds < 0) - { - return -EINVAL; - } - - /* convert timeval timeout to double time_to_wait */ - if (timeout) - { - if (timeout->tv_sec == 0 && timeout->tv_usec == 0) - { - /* polling: vppcom_select returns immediately */ - time_to_wait = (double) 0; - } - else - { - /*TBD: use timeval api */ - time_to_wait = (double) timeout->tv_sec + - (double) timeout->tv_usec / (double) 1000000 + - (double) (timeout->tv_usec % 1000000) / (double) 1000000; - } - } - else - { - /* - * no timeout: vppcom_select can block indefinitely - * waiting for a file descriptor to become ready - * */ - /* set to a phantom value */ - time_to_wait = ~0; - } - - /* zero the sid_sets */ - /* - * F fd set - * S sid set - */ -#define _(S,F) \ - if ((F)) \ - { \ - FD_ZERO ((S)); \ - } - - - _(&vcom_rd_sid_fds, vcom_readfds); - _(&vcom_wr_sid_fds, vcom_writefds); - _(&vcom_ex_sid_fds, vcom_exceptfds); -#undef _ - - if (vcom_nfds == 0) - { - if (time_to_wait > 0) - { - if (VCOM_DEBUG > 0) - fprintf (stderr, - "[%d] vcom_socket_select called to " - "emulate delay_ns()!\n", pid); - rv = vppcom_select (0, NULL, NULL, NULL, time_to_wait); - } - else - { - fprintf (stderr, "[%d] vcom_socket_select called vcom_nfds = 0 " - "and invalid time_to_wait (%f)!\n", pid, time_to_wait); - } - return 0; - } - - /* populate read, write and except sid_sets */ - vcom_nsid = vcom_socket_fds_2_sid_fds ( - /* dest */ - vcom_readfds || vcom_writefds - || vcom_exceptfds ? (int *) - &vcom_nsid_fds : NULL, - vcom_readfds ? &vcom_rd_sid_fds : - NULL, - vcom_writefds ? &vcom_wr_sid_fds : - NULL, - vcom_exceptfds ? &vcom_ex_sid_fds : - NULL, - /* src */ - vcom_nfds, - vcom_readfds, - vcom_writefds, vcom_exceptfds); - if (vcom_nsid < 0) - { - return vcom_nsid; - } - if (vcom_nsid_fds < 0) - { - return -EINVAL; - } - - rv = vppcom_select (vcom_nsid_fds, - vcom_readfds ? (unsigned long *) &vcom_rd_sid_fds : - NULL, - vcom_writefds ? (unsigned long *) &vcom_wr_sid_fds : - NULL, - vcom_exceptfds ? (unsigned long *) &vcom_ex_sid_fds : - NULL, time_to_wait); - if (VCOM_DEBUG > 2) - fprintf (stderr, "[%d] called vppcom_select(): " - "'%04d'='%04d'\n", pid, rv, (int) vcom_nsid_fds); - - /* check if any file descriptors changed status */ - if (rv > 0) - { - /* - * on exit, sets are modified in place to indicate which - * file descriptors actually changed status - * */ - - /* - * comply with pre-condition - * do not clear vcom fd sets befor calling - * vcom_socket_sid_fds_2_fds - */ - new_vcom_nfd = vcom_socket_sid_fds_2_fds ( - /* dest */ - &new_vcom_nfds, - vcom_nfds, - vcom_readfds, - vcom_writefds, - vcom_exceptfds, - /* src */ - vcom_nsid_fds, - vcom_readfds ? - &vcom_rd_sid_fds : NULL, - vcom_writefds ? - &vcom_wr_sid_fds : NULL, - vcom_exceptfds ? - &vcom_ex_sid_fds : NULL); - if (new_vcom_nfd < 0) - { - return new_vcom_nfd; - } - if (new_vcom_nfds < 0) - { - return -EINVAL; - } - rv = new_vcom_nfd; - } - return rv; -} - - -int -vcom_socket_socket (int __domain, int __type, int __protocol) -{ - int rv = -1; - vcom_socket_main_t *vsm = &vcom_socket_main; - vcom_socket_t *vsock; - - i32 fd; - i32 sid; - i32 sockidx; - u8 is_nonblocking = __type & SOCK_NONBLOCK ? 1 : 0; - int type = __type & ~(SOCK_NONBLOCK | SOCK_CLOEXEC); - - fd = vcom_socket_open_socket (__domain, __type, __protocol); - if (fd < 0) - { - rv = fd; - goto out; - } - - sid = vppcom_session_create (VPPCOM_VRF_DEFAULT, - (type == SOCK_DGRAM) ? - VPPCOM_PROTO_UDP : VPPCOM_PROTO_TCP, - is_nonblocking); - if (sid < 0) - { - rv = sid; - goto out_close_socket; - } - - pool_get (vsm->vsockets, vsock); - vsocket_init (vsock); - - sockidx = vsock - vsm->vsockets; - hash_set (vsm->sockidx_by_fd, fd, sockidx); - - vsocket_set (vsock, fd, sid, SOCKET_TYPE_VPPCOM_BOUND); - return fd; - -out_close_socket: - vcom_socket_close_socket (fd); -out: - return rv; -} - -int -vcom_socket_socketpair (int __domain, int __type, int __protocol, - int __fds[2]) -{ -/* TBD: */ - return 0; -} - -int -vcom_socket_bind (int __fd, __CONST_SOCKADDR_ARG __addr, socklen_t __len) -{ - int rv = -1; - vcom_socket_main_t *vsm = &vcom_socket_main; - uword *p; - vcom_socket_t *vsock; - - vppcom_endpt_t ep; - - p = hash_get (vsm->sockidx_by_fd, __fd); - if (!p) - return -EBADF; - - vsock = pool_elt_at_index (vsm->vsockets, p[0]); - if (!vsock) - return -ENOTSOCK; - - if (vsock->type != SOCKET_TYPE_VPPCOM_BOUND) - return -EINVAL; - - if (!__addr) - { - return -EINVAL; - } - - ep.vrf = VPPCOM_VRF_DEFAULT; - switch (__addr->sa_family) - { - case AF_INET: - if (__len != sizeof (struct sockaddr_in)) - { - return -EINVAL; - } - ep.is_ip4 = VPPCOM_IS_IP4; - ep.ip = (u8 *) & ((const struct sockaddr_in *) __addr)->sin_addr; - ep.port = (u16) ((const struct sockaddr_in *) __addr)->sin_port; - break; - - case AF_INET6: - if (__len != sizeof (struct sockaddr_in6)) - { - return -EINVAL; - } - ep.is_ip4 = VPPCOM_IS_IP6; - ep.ip = (u8 *) & ((const struct sockaddr_in6 *) __addr)->sin6_addr; - ep.port = (u16) ((const struct sockaddr_in6 *) __addr)->sin6_port; - break; - - default: - return -1; - break; - } - - rv = vppcom_session_bind (vsock->sid, &ep); - return rv; -} - -static inline int -vcom_session_getsockname (int sid, vppcom_endpt_t * ep) -{ - int rv; - uint32_t size = sizeof (*ep); - - rv = vppcom_session_attr (sid, VPPCOM_ATTR_GET_LCL_ADDR, ep, &size); - return rv; -} - -int -vcom_socket_getsockname (int __fd, __SOCKADDR_ARG __addr, - socklen_t * __restrict __len) -{ - int rv = -1; - vcom_socket_main_t *vsm = &vcom_socket_main; - uword *p; - vcom_socket_t *vsock; - - - p = hash_get (vsm->sockidx_by_fd, __fd); - if (!p) - return -EBADF; - - vsock = pool_elt_at_index (vsm->vsockets, p[0]); - if (!vsock) - return -ENOTSOCK; - - if (vsock->type != SOCKET_TYPE_VPPCOM_BOUND) - return -EINVAL; - - if (!__addr || !__len) - return -EFAULT; - - if (*__len < 0) - { - return -EINVAL; - } - - vppcom_endpt_t ep; - ep.ip = (u8 *) & ((const struct sockaddr_in *) __addr)->sin_addr; - rv = vcom_session_getsockname (vsock->sid, &ep); - if (rv == 0) - { - if (ep.vrf == VPPCOM_VRF_DEFAULT) - { - __addr->sa_family = ep.is_ip4 == VPPCOM_IS_IP4 ? AF_INET : AF_INET6; - switch (__addr->sa_family) - { - case AF_INET: - ((struct sockaddr_in *) __addr)->sin_port = ep.port; - *__len = sizeof (struct sockaddr_in); - break; - - case AF_INET6: - ((struct sockaddr_in6 *) __addr)->sin6_port = ep.port; - *__len = sizeof (struct sockaddr_in6); - break; - - default: - break; - } - } - } - - return rv; -} - -int -vcom_socket_connect (int __fd, __CONST_SOCKADDR_ARG __addr, socklen_t __len) -{ - int rv = -1; - vcom_socket_main_t *vsm = &vcom_socket_main; - uword *p; - vcom_socket_t *vsock; - - vppcom_endpt_t ep; - - p = hash_get (vsm->sockidx_by_fd, __fd); - if (p) - { - vsock = pool_elt_at_index (vsm->vsockets, p[0]); - - ep.vrf = VPPCOM_VRF_DEFAULT; - switch (__addr->sa_family) - { - case AF_INET: - ep.is_ip4 = VPPCOM_IS_IP4; - ep.ip = - (uint8_t *) & ((const struct sockaddr_in *) __addr)->sin_addr; - ep.port = - (uint16_t) ((const struct sockaddr_in *) __addr)->sin_port; - break; - - case AF_INET6: - ep.is_ip4 = VPPCOM_IS_IP6; - ep.ip = - (uint8_t *) & ((const struct sockaddr_in6 *) __addr)->sin6_addr; - ep.port = - (uint16_t) ((const struct sockaddr_in6 *) __addr)->sin6_port; - break; - - default: - return -1; - break; - } - - rv = vppcom_session_connect (vsock->sid, &ep); - } - return rv; -} - -static inline int -vcom_session_getpeername (int sid, vppcom_endpt_t * ep) -{ - int rv; - uint32_t size = sizeof (*ep); - - rv = vppcom_session_attr (sid, VPPCOM_ATTR_GET_PEER_ADDR, ep, &size); - return rv; -} - -int -vcom_socket_getpeername (int __fd, __SOCKADDR_ARG __addr, - socklen_t * __restrict __len) -{ - int rv = -1; - vcom_socket_main_t *vsm = &vcom_socket_main; - uword *p; - vcom_socket_t *vsock; - - - p = hash_get (vsm->sockidx_by_fd, __fd); - if (!p) - return -EBADF; - - vsock = pool_elt_at_index (vsm->vsockets, p[0]); - if (!vsock) - return -ENOTSOCK; - - if (vsock->type != SOCKET_TYPE_VPPCOM_BOUND) - return -EINVAL; - - if (!__addr || !__len) - return -EFAULT; - - if (*__len < 0) - { - return -EINVAL; - } - - vppcom_endpt_t ep; - ep.ip = (u8 *) & ((const struct sockaddr_in *) __addr)->sin_addr; - rv = vcom_session_getpeername (vsock->sid, &ep); - if (rv == 0) - { - if (ep.vrf == VPPCOM_VRF_DEFAULT) - { - __addr->sa_family = ep.is_ip4 == VPPCOM_IS_IP4 ? AF_INET : AF_INET6; - switch (__addr->sa_family) - { - case AF_INET: - ((struct sockaddr_in *) __addr)->sin_port = ep.port; - *__len = sizeof (struct sockaddr_in); - break; - - case AF_INET6: - ((struct sockaddr_in6 *) __addr)->sin6_port = ep.port; - *__len = sizeof (struct sockaddr_in6); - break; - - default: - break; - } - } - } - - return rv; -} - -ssize_t -vcom_socket_send (int __fd, const void *__buf, size_t __n, int __flags) -{ - return vcom_socket_sendto (__fd, __buf, __n, __flags, NULL, 0); -} - -ssize_t -vcom_socket_recv (int __fd, void *__buf, size_t __n, int __flags) -{ - int rv = -1; - rv = vcom_socket_recvfrom (__fd, __buf, __n, __flags, NULL, 0); - return rv; -} - -/* - * RETURN 1 if __fd is (SOCK_STREAM, SOCK_SEQPACKET), - * 0 otherwise - * */ -int -vcom_socket_is_connection_mode_socket (int __fd) -{ - int rv = -1; - /* TBD define new vppcom api */ - vcom_socket_main_t *vsm = &vcom_socket_main; - uword *p; - vcom_socket_t *vsock; - - int type; - socklen_t optlen; - - p = hash_get (vsm->sockidx_by_fd, __fd); - - if (p) - { - vsock = pool_elt_at_index (vsm->vsockets, p[0]); - if (vsock && vsock->type == SOCKET_TYPE_VPPCOM_BOUND) - { - optlen = sizeof (type); - rv = libc_getsockopt (__fd, SOL_SOCKET, SO_TYPE, &type, &optlen); - if (rv != 0) - { - return 0; - } - /* get socket type */ - switch (type & ~(SOCK_CLOEXEC | SOCK_NONBLOCK)) - { - case SOCK_STREAM: - case SOCK_SEQPACKET: - return 1; - break; - - default: - return 0; - break; - } - } - } - return 0; -} - -static inline ssize_t -vcom_session_sendto (int __sid, void *__buf, size_t __n, - int __flags, __CONST_SOCKADDR_ARG __addr, - socklen_t __addr_len) -{ - int rv = -1; - /* TBD add new vpp api */ - /* TBD add flags parameter */ - rv = vppcom_session_write (__sid, (void *) __buf, (int) __n); - return rv; -} - -ssize_t -vcom_socket_sendto (int __fd, const void *__buf, size_t __n, - int __flags, __CONST_SOCKADDR_ARG __addr, - socklen_t __addr_len) -{ - int rv = -1; - vcom_socket_main_t *vsm = &vcom_socket_main; - uword *p; - vcom_socket_t *vsock; - - p = hash_get (vsm->sockidx_by_fd, __fd); - if (!p) - return -EBADF; - - vsock = pool_elt_at_index (vsm->vsockets, p[0]); - if (!vsock) - return -ENOTSOCK; - - if ((vsock->type != SOCKET_TYPE_VPPCOM_BOUND) || !__buf || __n < 0) - { - return -EINVAL; - } - - if (vcom_socket_is_connection_mode_socket (__fd)) - { - /* ignore __addr and _addr_len */ - /* and EISCONN may be returned when they are not NULL and 0 */ - if ((__addr != NULL) || (__addr_len != 0)) - { - return -EISCONN; - } - } - else - { - if (!__addr || __addr_len < 0) - { - return -EDESTADDRREQ; - } - /* not a vppcom supported address family */ - if ((__addr->sa_family != AF_INET) || (__addr->sa_family != AF_INET6)) - { - return -EINVAL; - } - } - - rv = vcom_session_sendto (vsock->sid, (void *) __buf, (int) __n, - __flags, __addr, __addr_len); - return rv; -} - -static inline ssize_t -vcom_session_recvfrom (int __sid, void *__restrict __buf, size_t __n, - int __flags, __SOCKADDR_ARG __addr, - socklen_t * __restrict __addr_len) -{ - int rv = -1; - - /* TBD add flags parameter */ - rv = vppcom_session_read (__sid, __buf, __n); - return rv; -} - -ssize_t -vcom_socket_recvfrom (int __fd, void *__restrict __buf, size_t __n, - int __flags, __SOCKADDR_ARG __addr, - socklen_t * __restrict __addr_len) -{ - int rv = -1; - vcom_socket_main_t *vsm = &vcom_socket_main; - uword *p; - vcom_socket_t *vsock; - - p = hash_get (vsm->sockidx_by_fd, __fd); - if (!p) - return -EBADF; - - vsock = pool_elt_at_index (vsm->vsockets, p[0]); - if (!vsock) - return -ENOTSOCK; - - if ((vsock->type != SOCKET_TYPE_VPPCOM_BOUND) || - !__buf || __n < 0 || !__addr || !__addr_len || (__addr_len < 0)) - { - return -EINVAL; - } - - rv = vcom_session_recvfrom (vsock->sid, __buf, __n, - __flags, __addr, __addr_len); - return rv; -} - -/* TBD: move it to vppcom */ -static inline ssize_t -vcom_session_sendmsg (int __sid, const struct msghdr *__message, int __flags) -{ - int rv = -1; - /* rv = vppcom_session_write (__sid, (void *) __message->__buf, - (int)__n); */ - return rv; -} - -ssize_t -vcom_socket_sendmsg (int __fd, const struct msghdr * __message, int __flags) -{ - int rv = -1; - vcom_socket_main_t *vsm = &vcom_socket_main; - uword *p; - vcom_socket_t *vsock; - - p = hash_get (vsm->sockidx_by_fd, __fd); - if (!p) - return -EBADF; - - vsock = pool_elt_at_index (vsm->vsockets, p[0]); - if (!vsock) - return -ENOTSOCK; - - if (vcom_socket_is_connection_mode_socket (__fd)) - { - /* ignore __addr and _addr_len */ - /* and EISCONN may be returned when they are not NULL and 0 */ - if ((__message->msg_name != NULL) || (__message->msg_namelen != 0)) - { - return -EISCONN; - } - } - else - { - /* TBD: validate __message->msg_name and __message->msg_namelen - * and return -EINVAL on validation error - * */ - ; - } - - rv = vcom_session_sendmsg (vsock->sid, __message, __flags); - - return rv; -} - -#ifdef __USE_GNU -int -vcom_socket_sendmmsg (int __fd, struct mmsghdr *__vmessages, - unsigned int __vlen, int __flags) -{ - - /* TBD: define a new vppcom api */ - return 0; -} -#endif - -/* TBD: move it to vppcom */ -static inline ssize_t -vcom_session_recvmsg (int __sid, struct msghdr *__message, int __flags) -{ - int rv = -1; - /* rv = vppcom_session_read (__sid, (void *) __message->__buf, - (int)__n); */ - rv = -EOPNOTSUPP; - return rv; -} - -ssize_t -vcom_socket_recvmsg (int __fd, struct msghdr * __message, int __flags) -{ - int rv = -1; - vcom_socket_main_t *vsm = &vcom_socket_main; - uword *p; - vcom_socket_t *vsock; - - p = hash_get (vsm->sockidx_by_fd, __fd); - if (!p) - return -EBADF; - - vsock = pool_elt_at_index (vsm->vsockets, p[0]); - if (!vsock) - return -ENOTSOCK; - - if (vsock->type != SOCKET_TYPE_VPPCOM_BOUND) - return -EINVAL; - - if (!__message) - { - return -EINVAL; - } - - /* validate __flags */ - - rv = vcom_session_recvmsg (vsock->sid, __message, __flags); - return rv; -} - -#ifdef __USE_GNU -int -vcom_socket_recvmmsg (int __fd, struct mmsghdr *__vmessages, - unsigned int __vlen, int __flags, - struct timespec *__tmo) -{ - /* TBD: define a new vppcom api */ - return 0; -} -#endif - -/* TBD: move it to vppcom */ -static inline int -vcom_session_get_sockopt (int __sid, int __level, int __optname, - void *__restrict __optval, - socklen_t * __restrict __optlen) -{ - /* 1. for socket level options that are NOT socket attributes - * and that has corresponding vpp options get from vppcom */ - return 0; -} - -int -vcom_socket_getsockopt (int __fd, int __level, int __optname, - void *__restrict __optval, - socklen_t * __restrict __optlen) -{ - int rv = -1; - vcom_socket_main_t *vsm = &vcom_socket_main; - uword *p; - vcom_socket_t *vsock; - - p = hash_get (vsm->sockidx_by_fd, __fd); - if (!p) - return -EBADF; - - vsock = pool_elt_at_index (vsm->vsockets, p[0]); - if (!vsock) - return -ENOTSOCK; - - if (vsock->type != SOCKET_TYPE_VPPCOM_BOUND) - return -EINVAL; - - if (!__optval && !__optlen) - return -EFAULT; - - if (*__optlen < 0) - { - return -EINVAL; - } - - switch (__level) - { - /* handle options at socket level */ - case SOL_SOCKET: - switch (__optname) - { -/* - * 1. for socket level options that are socket attributes, - * get from libc_getsockopt. - * 2. for socket level options that are NOT socket - * attributes and that has corresponding vpp options - * get from vppcom. - * 3. for socket level options unimplemented - * return -ENOPROTOOPT */ - case SO_DEBUG: - case SO_DONTROUTE: - case SO_BROADCAST: - case SO_SNDBUF: - case SO_RCVBUF: - case SO_REUSEADDR: - case SO_REUSEPORT: - case SO_KEEPALIVE: - case SO_TYPE: - case SO_PROTOCOL: - case SO_DOMAIN: - case SO_ERROR: - case SO_OOBINLINE: - case SO_NO_CHECK: - case SO_PRIORITY: - case SO_LINGER: - case SO_BSDCOMPAT: - case SO_TIMESTAMP: - case SO_TIMESTAMPNS: - case SO_TIMESTAMPING: - case SO_RCVTIMEO: - case SO_SNDTIMEO: - case SO_RCVLOWAT: - case SO_SNDLOWAT: - case SO_PASSCRED: - case SO_PEERCRED: - case SO_PEERNAME: - case SO_ACCEPTCONN: - case SO_PASSSEC: - case SO_PEERSEC: - case SO_MARK: - case SO_RXQ_OVFL: - case SO_WIFI_STATUS: - case SO_PEEK_OFF: - case SO_NOFCS: - case SO_BINDTODEVICE: - case SO_GET_FILTER: - case SO_LOCK_FILTER: - case SO_BPF_EXTENSIONS: - case SO_SELECT_ERR_QUEUE: -#ifdef CONFIG_NET_RX_BUSY_POLL - case SO_BUSY_POLL: -#endif - case SO_MAX_PACING_RATE: - case SO_INCOMING_CPU: - rv = libc_getsockopt (__fd, __level, __optname, __optval, __optlen); - if (rv != 0) - { - rv = -errno; - return rv; - } - break; - - default: - /* We implement the SO_SNDLOWAT etc to not be settable - * (1003.1g 7). - */ - return -ENOPROTOOPT; - } - - break; - - default: - /* 1. handle options that are NOT socket level options, - * but have corresponding vpp otions. */ - rv = vcom_session_get_sockopt (vsock->sid, __level, __optname, - __optval, __optlen); - break; - } - - return rv; -} - -/* TBD: move it to vppcom */ -static inline int -vcom_session_setsockopt (int __sid, int __level, int __optname, - const void *__optval, socklen_t __optlen) -{ - int rv = -EOPNOTSUPP; - - switch (__level) - { - case SOL_TCP: - switch (__optname) - { - case TCP_KEEPIDLE: - rv = - vppcom_session_attr (__sid, VPPCOM_ATTR_SET_TCP_KEEPIDLE, 0, 0); - break; - case TCP_KEEPINTVL: - rv = - vppcom_session_attr (__sid, VPPCOM_ATTR_SET_TCP_KEEPINTVL, 0, 0); - break; - default: - break; - } - break; - case SOL_IPV6: - switch (__optname) - { - case IPV6_V6ONLY: - rv = vppcom_session_attr (__sid, VPPCOM_ATTR_SET_V6ONLY, 0, 0); - break; - default: - break; - } - break; - case SOL_SOCKET: - switch (__optname) - { - case SO_KEEPALIVE: - rv = vppcom_session_attr (__sid, VPPCOM_ATTR_SET_KEEPALIVE, 0, 0); - break; - case SO_REUSEADDR: - rv = vppcom_session_attr (__sid, VPPCOM_ATTR_SET_REUSEADDR, 0, 0); - break; - case SO_BROADCAST: - rv = vppcom_session_attr (__sid, VPPCOM_ATTR_SET_BROADCAST, 0, 0); - break; - default: - break; - } - break; - default: - break; - } - - return rv; -} - -int -vcom_socket_setsockopt (int __fd, int __level, int __optname, - const void *__optval, socklen_t __optlen) -{ - int rv = -1; - vcom_socket_main_t *vsm = &vcom_socket_main; - uword *p; - vcom_socket_t *vsock; - - p = hash_get (vsm->sockidx_by_fd, __fd); - if (!p) - return -EBADF; - - vsock = pool_elt_at_index (vsm->vsockets, p[0]); - if (!vsock) - return -ENOTSOCK; - - if (vsock->type != SOCKET_TYPE_VPPCOM_BOUND) - return -EINVAL; - - /* - * Options without arguments - */ - - if (__optname == SO_BINDTODEVICE) - { - rv = libc_setsockopt (__fd, __level, __optname, __optval, __optlen); - if (rv != 0) - { - rv = -errno; - } - return rv; - } - - if (!__optval) - return -EFAULT; - - if ((__optlen < 0) || (__optlen < sizeof (int))) - return -EINVAL; - - switch (__level) - { - case SOL_IPV6: - switch (__optname) - { - case IPV6_V6ONLY: - rv = vcom_session_setsockopt (vsock->sid, __level, __optname, - __optval, __optlen); - break; - default: - return -EOPNOTSUPP; - } - break; - case SOL_TCP: - switch (__optname) - { - case TCP_NODELAY: - return 0; - case TCP_KEEPIDLE: - case TCP_KEEPINTVL: - rv = vcom_session_setsockopt (vsock->sid, __level, __optname, - __optval, __optlen); - break; - default: - return -EOPNOTSUPP; - } - break; - /* handle options at socket level */ - case SOL_SOCKET: - switch (__optname) - { - case SO_REUSEADDR: - case SO_BROADCAST: - case SO_KEEPALIVE: - rv = vcom_session_setsockopt (vsock->sid, __level, __optname, - __optval, __optlen); - break; - - /* - * 1. for socket level options that are socket attributes, - * set it from libc_getsockopt - * 2. for socket level options that are NOT socket - * attributes and that has corresponding vpp options - * set it from vppcom - * 3. for socket level options unimplemented - * return -ENOPROTOOPT */ - case SO_DEBUG: - case SO_DONTROUTE: - case SO_SNDBUF: - case SO_RCVBUF: - case SO_REUSEPORT: - case SO_TYPE: - case SO_PROTOCOL: - case SO_DOMAIN: - case SO_ERROR: - case SO_OOBINLINE: - case SO_NO_CHECK: - case SO_PRIORITY: - case SO_LINGER: - case SO_BSDCOMPAT: - case SO_TIMESTAMP: - case SO_TIMESTAMPNS: - case SO_TIMESTAMPING: - case SO_RCVTIMEO: - case SO_SNDTIMEO: - case SO_RCVLOWAT: - case SO_SNDLOWAT: - case SO_PASSCRED: - case SO_PEERCRED: - case SO_PEERNAME: - case SO_ACCEPTCONN: - case SO_PASSSEC: - case SO_PEERSEC: - case SO_MARK: - case SO_RXQ_OVFL: - case SO_WIFI_STATUS: - case SO_PEEK_OFF: - case SO_NOFCS: - /* - * SO_BINDTODEVICE already handled as - * "Options without arguments" */ - /* case SO_BINDTODEVICE: */ - case SO_GET_FILTER: - case SO_LOCK_FILTER: - case SO_BPF_EXTENSIONS: - case SO_SELECT_ERR_QUEUE: -#ifdef CONFIG_NET_RX_BUSY_POLL - case SO_BUSY_POLL: -#endif - case SO_MAX_PACING_RATE: - case SO_INCOMING_CPU: - rv = libc_setsockopt (__fd, __level, __optname, __optval, __optlen); - if (rv != 0) - { - rv = -errno; - return rv; - } - break; - - default: - /* We implement the SO_SNDLOWAT etc to not be settable - * (1003.1g 7). - */ - return -ENOPROTOOPT; - } - - break; - - default: - return -ENOPROTOOPT; - } - - return rv; -} - -int -vcom_socket_listen (int __fd, int __n) -{ - int rv = -1; - vcom_socket_main_t *vsm = &vcom_socket_main; - uword *p; - vcom_socket_t *vsock; - - p = hash_get (vsm->sockidx_by_fd, __fd); - if (p) - { - vsock = pool_elt_at_index (vsm->vsockets, p[0]); - - /* TBD vppcom to accept __n parameter */ - rv = vppcom_session_listen (vsock->sid, __n); - } - - return rv; -} - -static int -vcom_socket_connected_socket (int __fd, int __sid, - int *__domain, - int *__type, int *__protocol, int flags) -{ - int rv = -1; - vcom_socket_main_t *vsm = &vcom_socket_main; - vcom_socket_t *vsock; - - i32 fd; - i32 sockidx; - - socklen_t optlen; - - optlen = sizeof (*__domain); - rv = libc_getsockopt (__fd, SOL_SOCKET, SO_DOMAIN, __domain, &optlen); - if (rv != 0) - { - rv = -errno; - goto out; - } - - optlen = sizeof (*__type); - rv = libc_getsockopt (__fd, SOL_SOCKET, SO_TYPE, __type, &optlen); - if (rv != 0) - { - rv = -errno; - goto out; - } - - optlen = sizeof (*__protocol); - rv = libc_getsockopt (__fd, SOL_SOCKET, SO_PROTOCOL, __protocol, &optlen); - if (rv != 0) - { - rv = -errno; - goto out; - } - - fd = vcom_socket_open_socket (*__domain, *__type | flags, *__protocol); - if (fd < 0) - { - rv = fd; - goto out; - } - - pool_get (vsm->vsockets, vsock); - vsocket_init (vsock); - - sockidx = vsock - vsm->vsockets; - hash_set (vsm->sockidx_by_fd, fd, sockidx); - - vsocket_set (vsock, fd, __sid, SOCKET_TYPE_VPPCOM_BOUND); - return fd; - -out: - return rv; -} - -/* If flag is 0, then accept4() is the same as accept(). - * SOCK_NONBLOCK and SOCK_CLOEXEC can be bitwise ORed in flags - */ -static int -vcom_socket_accept_flags (int __fd, __SOCKADDR_ARG __addr, - socklen_t * __restrict __addr_len, int flags) -{ - int rv = -1; - vcom_socket_main_t *vsm = &vcom_socket_main; - uword *p; - vcom_socket_t *vsock; - - int fd; - int sid; - int domain; - int type; - int protocol; - - uint8_t addr8[sizeof (struct in6_addr)]; - vppcom_endpt_t ep; - - ep.ip = addr8; - - /* validate flags */ - - /* - * for documentation - * switch (flags) - * { - * case 0: - * case SOCK_NONBLOCK: - * case SOCK_CLOEXEC: - * case SOCK_NONBLOCK | SOCK_CLOEXEC: - * break; - * - * default: - * return -1; - * } - */ - /* flags can be 0 or can be bitwise OR - * of any of SOCK_NONBLOCK and SOCK_CLOEXEC */ - - if (!(!flags || (flags & (SOCK_NONBLOCK | SOCK_CLOEXEC)))) - { - /* TBD: return proper error code */ - return -1; - } - - /* TBD: return proper error code */ - - if (!vcom_socket_is_connection_mode_socket (__fd)) - { - return -EOPNOTSUPP; - } - - p = hash_get (vsm->sockidx_by_fd, __fd); - if (p) - { - vsock = pool_elt_at_index (vsm->vsockets, p[0]); - - - rv = vcom_fcntl (vsock->fd, F_GETFL, 0); - if (rv < 0) - { - return rv; - } - - /* is blocking */ - if (!(rv & O_NONBLOCK)) - { - /* socket is not marked as nonblocking - * and no pending connections are present - * on the queue, accept () blocks the caller - * until a connection is present. - */ - rv = vppcom_session_accept (vsock->sid, &ep, - -1.0 /* wait forever */ ); - } - else - { - /* The file descriptor refers to a socket and has been - * marked nonblocking(O_NONBLOCK) and the accept would - * block. - * */ - /* is non blocking */ - rv = vppcom_session_accept (vsock->sid, &ep, 0); - /* If the socket is marked nonblocking and - * no pending connections are present on the - * queue, accept fails with the error - * EAGAIN or EWOULDBLOCK - */ - if (rv == VPPCOM_ETIMEDOUT) - { - rv = VPPCOM_EAGAIN; - } - } - if (rv < 0) - { - return rv; - } - - sid = rv; - - /* create a new connected socket resource and set flags - * on the new file descriptor. - * update vsockets and sockidx_by_fd table - * */ - fd = vcom_socket_connected_socket (__fd, sid, - &domain, &type, &protocol, flags); - if (fd < 0) - { - return fd; - } - - rv = fd; - - /* TBD populate __addr and __addr_len */ - /* TBD: The returned address is truncated if the buffer - * provided is too small, in this case, __addr_len will - * return a value greater than was supplied to the call.*/ - if (__addr) - { - if (ep.is_cut_thru) - { - /* TBD populate __addr and __addr_len */ - switch (domain) - { - case AF_INET: - ((struct sockaddr_in *) __addr)->sin_family = AF_INET; - ((struct sockaddr_in *) __addr)->sin_port = ep.port; - memcpy (&((struct sockaddr_in *) __addr)->sin_addr, - addr8, sizeof (struct in_addr)); - /* TBD: populate __addr_len */ - if (__addr_len) - { - *__addr_len = sizeof (struct sockaddr_in); - } - break; - - case AF_INET6: - ((struct sockaddr_in6 *) __addr)->sin6_family = AF_INET6; - ((struct sockaddr_in6 *) __addr)->sin6_port = ep.port; - memcpy (((struct sockaddr_in6 *) __addr)->sin6_addr. - __in6_u.__u6_addr8, addr8, - sizeof (struct in6_addr)); - /* TBD: populate __addr_len */ - if (__addr_len) - { - *__addr_len = sizeof (struct sockaddr_in6); - } - break; - - default: - return -EAFNOSUPPORT; - } - } - else - { - switch (ep.is_ip4) - { - case VPPCOM_IS_IP4: - ((struct sockaddr_in *) __addr)->sin_family = AF_INET; - ((struct sockaddr_in *) __addr)->sin_port = ep.port; - memcpy (&((struct sockaddr_in *) __addr)->sin_addr, - addr8, sizeof (struct in_addr)); - /* TBD: populate __addr_len */ - if (__addr_len) - { - *__addr_len = sizeof (struct sockaddr_in); - } - break; - - case VPPCOM_IS_IP6: - ((struct sockaddr_in6 *) __addr)->sin6_family = AF_INET6; - ((struct sockaddr_in6 *) __addr)->sin6_port = ep.port; - memcpy (((struct sockaddr_in6 *) __addr)->sin6_addr. - __in6_u.__u6_addr8, addr8, - sizeof (struct in6_addr)); - /* TBD: populate __addr_len */ - if (__addr_len) - { - *__addr_len = sizeof (struct sockaddr_in6); - } - break; - - default: - return -EAFNOSUPPORT; - } - } - } - else - { - /* when __addr is NULL, nothing is filled in, - * in this case, __addr_len is not used, - * and should also be null - * */ - if (__addr_len) - { - /* TBD: return proper error code */ - return -1; - } - } - } - - return rv; -} - -int -vcom_socket_accept (int __fd, __SOCKADDR_ARG __addr, - socklen_t * __restrict __addr_len) -{ - /* set flags to 0 for accept() */ - return vcom_socket_accept_flags (__fd, __addr, __addr_len, 0); -} - -#ifdef __USE_GNU -int -vcom_socket_accept4 (int __fd, __SOCKADDR_ARG __addr, - socklen_t * __restrict __addr_len, int __flags) -{ - /* SOCK_NONBLOCK and SOCK_CLOEXEC can be bitwise ORed in flags */ - return vcom_socket_accept_flags (__fd, __addr, __addr_len, __flags); -} -#endif - -/* TBD: move it to vppcom */ -static inline int -vcom_session_shutdown (int __fd, int __how) -{ - return 0; -} - -int -vcom_socket_shutdown (int __fd, int __how) -{ - int rv = -1; - vcom_socket_main_t *vsm = &vcom_socket_main; - uword *p; - vcom_socket_t *vsock; - - p = hash_get (vsm->sockidx_by_fd, __fd); - if (p) - { - vsock = pool_elt_at_index (vsm->vsockets, p[0]); - switch (__how) - { - case SHUT_RD: - case SHUT_WR: - case SHUT_RDWR: - rv = vcom_session_shutdown (vsock->sid, __how); - return rv; - break; - - default: - return -EINVAL; - break; - } - } - - return rv; -} - -int -vcom_socket_epoll_create1 (int __flags) -{ - int rv = -1; - vcom_socket_main_t *vsm = &vcom_socket_main; - vcom_epoll_t *vepoll; - - i32 epfd; - i32 vep_idx; - i32 epollidx; - - epfd = vcom_socket_open_epoll (__flags); - if (epfd < 0) - { - rv = epfd; - goto out; - } - - vep_idx = vppcom_epoll_create (); - if (vep_idx < 0) - { - rv = vep_idx; - goto out_close_epoll; - } - - pool_get (vsm->vepolls, vepoll); - vepoll_init (vepoll); - - epollidx = vepoll - vsm->vepolls; - hash_set (vsm->epollidx_by_epfd, epfd, epollidx); - - vepoll_set (vepoll, epfd, vep_idx, EPOLL_TYPE_VPPCOM_BOUND, __flags, 0, 0); - - return epfd; - -out_close_epoll: - vcom_socket_close_epoll (epfd); -out: - return rv; -} - -/* - * PRE: vppcom_epoll_ctl() is successful - * free_vepitem_on_del : 0 - no_pool_put, 1 - pool_put - */ -int -vcom_socket_ctl_vepitem (int __epfd, int __op, int __fd, - struct epoll_event *__event, - i32 vep_idx, vcom_epoll_t * vepoll, - i32 vfd_id, void *vfd, vcom_fd_type_t type, - int free_vepitem_on_del) -{ - int rv = -1; - vcom_socket_main_t *vsm = &vcom_socket_main; - vcom_epitem_t *vepitem; - - vcom_epitem_key_t epfdfd = {.epfd = __epfd,.fd = __fd }; - uword *p; - i32 vepitemidx; - - i32 *vepitemidxs = 0; - - struct epoll_event revent = {.events = 0,.data.fd = INVALID_FD }; - - i32 vec_idx; - - /* perform control operations on the epoll instance */ - switch (__op) - { - case EPOLL_CTL_ADD: - /* - * supplied file descriptor is already - * registered with this epoll instance - * */ - /* vepitem exists */ - p = hash_get (vsm->epitemidx_by_epfdfd, epfdfd.key); - if (p) - { - rv = -EEXIST; - goto out; - } - - /* add a new vepitem */ - pool_get (vsm->vepitems, vepitem); - vepitem_init (vepitem); - - vepitemidx = vepitem - vsm->vepitems; - hash_set (vsm->epitemidx_by_epfdfd, epfdfd.key, vepitemidx); - vepitem_set (vepitem, __epfd, __fd, __fd, __fd, type, *__event, revent); - - /* update epitemidxs */ - /* by_epfd */ - p = hash_get (vsm->epitemidxs_by_epfd, __epfd); - if (!p) /* not exist */ - { - vepitemidxs = 0; - vec_add1 (vepitemidxs, vepitemidx); - hash_set (vsm->epitemidxs_by_epfd, __epfd, vepitemidxs); - } - else /* exists */ - { - vepitemidxs = *(i32 **) p; - vec_add1 (vepitemidxs, vepitemidx); - hash_set3 (vsm->epitemidxs_by_epfd, __epfd, vepitemidxs, 0); - } - /* update epitemidxs */ - /* by_fd */ - p = hash_get (vsm->epitemidxs_by_fd, __fd); - if (!p) /* not exist */ - { - vepitemidxs = 0; - vec_add1 (vepitemidxs, vepitemidx); - hash_set (vsm->epitemidxs_by_fd, __fd, vepitemidxs); - } - else /* exists */ - { - vepitemidxs = *(i32 **) p; - vec_add1 (vepitemidxs, vepitemidx); - hash_set3 (vsm->epitemidxs_by_fd, __fd, vepitemidxs, 0); - } - - /* increment vepoll fd count by 1 */ - vepoll->count += 1; - - rv = 0; - goto out; - break; - - case EPOLL_CTL_MOD: - /* - * supplied file descriptor is not - * registered with this epoll instance - * */ - /* vepitem not exist */ - p = hash_get (vsm->epitemidx_by_epfdfd, epfdfd.key); - if (!p) - { - rv = -ENOENT; - goto out; - } - vepitem = pool_elt_at_index (vsm->vepitems, p[0]); - if (vepitem) - { - vepitem->event = *__event; - vepitem->revent = revent; - } - - rv = 0; - goto out; - break; - - case EPOLL_CTL_DEL: - /* - * supplied file descriptor is not - * registered with this epoll instance - * */ - /* vepitem not exist */ - p = hash_get (vsm->epitemidx_by_epfdfd, epfdfd.key); - if (!p) - { - rv = -ENOENT; - goto out; - } - vepitemidx = *(i32 *) p; - hash_unset (vsm->epitemidx_by_epfdfd, epfdfd.key); - - /* update epitemidxs */ - /* by_epfd */ - p = hash_get (vsm->epitemidxs_by_epfd, __epfd); - if (!p) /* not exist */ - { - rv = -ENOENT; - goto out; - } - else /* exists */ - { - vepitemidxs = *(i32 **) p; - vec_idx = vec_search (vepitemidxs, vepitemidx); - if (vec_idx != ~0) - { - vec_del1 (vepitemidxs, vec_idx); - if (!vec_len (vepitemidxs)) - { - vec_free (vepitemidxs); - hash_unset (vsm->epitemidxs_by_epfd, __epfd); - } - } - } - - /* update epitemidxs */ - /* by_fd */ - p = hash_get (vsm->epitemidxs_by_fd, __fd); - if (!p) /* not exist */ - { - rv = -ENOENT; - goto out; - } - else /* exists */ - { - vepitemidxs = *(i32 **) p; - vec_idx = vec_search (vepitemidxs, vepitemidx); - if (vec_idx != ~0) - { - vec_del1 (vepitemidxs, vec_idx); - if (!vec_len (vepitemidxs)) - { - vec_free (vepitemidxs); - hash_unset (vsm->epitemidxs_by_fd, __fd); - } - } - } - - /* pool put vepitem */ - vepitem = pool_elt_at_index (vsm->vepitems, vepitemidx); - if (free_vepitem_on_del) - { - if (!vepitem) - { - rv = -ENOENT; - goto out; - } - vepitem_init (vepitem); - pool_put (vsm->vepitems, vepitem); - } - else - { - if (!vepitem) - { - vepitem_init (vepitem); - } - } - - /* decrement vepoll fd count by 1 */ - vepoll->count -= 1; - - rv = 0; - goto out; - break; - - default: - rv = -EINVAL; - goto out; - break; - } - -out: - return rv; -} - -/* - * PRE: 00. null pointer check on __event - * 01. all other parameters are validated - */ - -static int -vcom_socket_epoll_ctl_internal (int __epfd, int __op, int __fd, - struct epoll_event *__event, - int free_vepitem_on_del) -{ - int rv = -1; - - /* vcom_socket_main_t *vsm = &vcom_socket_main; */ - vcom_epoll_t *vepoll; - - /*__fd could could be vcom socket or vcom epoll or kernel fd */ - void *vfd; - vcom_epoll_t *vfd_vepoll; - vcom_socket_t *vfd_vsock; - - i32 vep_idx; - i32 vfd_id; - - vcom_fd_type_t type = FD_TYPE_INVALID; - - /* validate __event */ - - /* get vep_idx and vepoll */ - vep_idx = vcom_socket_get_vep_idx_and_vepoll (__epfd, &vepoll); - if (vep_idx == INVALID_VEP_IDX) - { - return -EBADF; - } - - /* get vcom fd type, vfd_id and vfd */ - vfd_id = vcom_socket_get_sid_and_vsock (__fd, &vfd_vsock); - if (vfd_id != INVALID_SESSION_ID) - { - type = FD_TYPE_VCOM_SOCKET; - vfd = vfd_vsock; - } - else if ((vfd_id = vcom_socket_get_vep_idx_and_vepoll (__fd, &vfd_vepoll)) - != INVALID_VEP_IDX) - { - type = FD_TYPE_EPOLL; - vfd = vfd_vepoll; - } - else - { - /* FD_TYPE_KERNEL not supported by epoll instance */ - type = FD_TYPE_INVALID; - return -EBADF; - } - - - /* vepoll and vsock are now valid */ - rv = vppcom_epoll_ctl (vep_idx, __op, vfd_id, __event); - if (rv < 0) - { - return rv; - } - - rv = vcom_socket_ctl_vepitem (__epfd, __op, __fd, - __event, - vep_idx, vepoll, - vfd_id, vfd, type, free_vepitem_on_del); - return rv; -} - -int -vcom_socket_epoll_ctl (int __epfd, int __op, int __fd, - struct epoll_event *__event) -{ - int rv = -1; - - rv = vcom_socket_epoll_ctl_internal (__epfd, __op, __fd, __event, 1); - return rv; -} - -static int -vcom_socket_epoll_ctl1 (int __epfd, int __op, int __fd, - struct epoll_event *__event) -{ - int rv = -1; - - rv = vcom_socket_epoll_ctl_internal (__epfd, __op, __fd, __event, 0); - return rv; -} - -int -vcom_socket_epoll_pwait (int __epfd, struct epoll_event *__events, - int __maxevents, int __timeout, - const __sigset_t * __ss) -{ - int rv = -EBADF; - - /* in seconds eg. 3.123456789 seconds */ - double time_to_wait = (double) 0; - - i32 vep_idx; - - /* validate __event */ - if (!__events) - { - rv = -EFAULT; - goto out; - } - - /* validate __timeout */ - if (__timeout > 0) - { - time_to_wait = (double) __timeout / (double) 1000; - } - else if (__timeout == 0) - { - time_to_wait = (double) 0; - } - else if (__timeout == -1) - { - time_to_wait = ~0; - } - else - { - rv = -EBADF; - goto out; - } - - /* get vep_idx */ - vep_idx = vcom_socket_get_vep_idx (__epfd); - if (vep_idx != INVALID_VEP_IDX) - { - rv = vppcom_epoll_wait (vep_idx, __events, __maxevents, time_to_wait); - } -out: - return rv; -} - -static inline void -vcom_pollfds_2_selectfds ( - /* src */ - struct pollfd *__fds, nfds_t __nfds, - /* dest */ - int vcom_nfds, - fd_set * __restrict vcom_readfds, - fd_set * __restrict vcom_writefds, - fd_set * __restrict vcom_exceptfds) -{ - nfds_t fds_idx = 0; - - for (fds_idx = 0; fds_idx < __nfds; fds_idx++) - { - /* ignore negative fds */ - if (__fds[fds_idx].fd < 0) - { - continue; - } - - /* for POLLRDHUP, POLLERR, POLLHUP and POLLNVAL */ - FD_SET (__fds[fds_idx].fd, vcom_exceptfds); - - /* requested events */ - if (__fds[fds_idx].events) - { - if (__fds[fds_idx].events & POLLIN) - { - FD_SET (__fds[fds_idx].fd, vcom_readfds); - } - if (__fds[fds_idx].events & POLLPRI) - { - FD_SET (__fds[fds_idx].fd, vcom_readfds); - } - if (__fds[fds_idx].events & POLLOUT) - { - FD_SET (__fds[fds_idx].fd, vcom_writefds); - } -#if defined __USE_XOPEN || defined __USE_XOPEN2K8 - if (__fds[fds_idx].events & POLLRDNORM) - { - FD_SET (__fds[fds_idx].fd, vcom_readfds); - } - if (__fds[fds_idx].events & POLLRDBAND) - { - FD_SET (__fds[fds_idx].fd, vcom_readfds); - } - if (__fds[fds_idx].events & POLLWRNORM) - { - FD_SET (__fds[fds_idx].fd, vcom_writefds); - } - if (__fds[fds_idx].events & POLLWRBAND) - { - FD_SET (__fds[fds_idx].fd, vcom_writefds); - } -#endif - } - } /* for (fds_idx = 0; fds_idx < __nfds; fds_idx++) */ -} - -static inline void -vcom_selectfds_2_pollfds ( - /* dest */ - struct pollfd *__fds, nfds_t __nfds, int *nfd, - /* src */ - int vcom_nfds, - fd_set * __restrict vcom_readfds, - fd_set * __restrict vcom_writefds, - fd_set * __restrict vcom_exceptfds) -{ - nfds_t fds_idx = 0; - - - for (fds_idx = 0; fds_idx < __nfds; fds_idx++) - { - /* ignore negative fds */ - if (__fds[fds_idx].fd < 0) - { - __fds[fds_idx].revents = 0; - } - - /* for POLLRDHUP, POLLERR, POLLHUP and POLLNVAL */ - if (FD_ISSET (__fds[fds_idx].fd, vcom_exceptfds)) - { - /* - * TBD: for now any select exception - * is flagged as POLLERR - * */ - __fds[fds_idx].revents |= POLLERR; - } - - /* requested events */ - if (__fds[fds_idx].events & POLLIN) - { - if (FD_ISSET (__fds[fds_idx].fd, vcom_readfds)) - { - __fds[fds_idx].revents |= POLLIN; - } - } - if (__fds[fds_idx].events & POLLPRI) - { - if (FD_ISSET (__fds[fds_idx].fd, vcom_readfds)) - { - __fds[fds_idx].revents |= POLLIN; - } - } - if (__fds[fds_idx].events & POLLOUT) - { - if (FD_ISSET (__fds[fds_idx].fd, vcom_writefds)) - { - __fds[fds_idx].revents |= POLLOUT; - } - } -#if defined __USE_XOPEN || defined __USE_XOPEN2K8 - if (__fds[fds_idx].events & POLLRDNORM) - { - if (FD_ISSET (__fds[fds_idx].fd, vcom_readfds)) - { - __fds[fds_idx].revents |= POLLRDNORM; - } - } - if (__fds[fds_idx].events & POLLRDBAND) - { - if (FD_ISSET (__fds[fds_idx].fd, vcom_readfds)) - { - __fds[fds_idx].revents |= POLLRDBAND; - } - } - if (__fds[fds_idx].events & POLLWRNORM) - { - if (FD_ISSET (__fds[fds_idx].fd, vcom_writefds)) - { - __fds[fds_idx].revents |= POLLWRNORM; - } - } - if (__fds[fds_idx].events & POLLWRBAND) - { - if (FD_ISSET (__fds[fds_idx].fd, vcom_writefds)) - { - __fds[fds_idx].revents |= POLLWRBAND; - } - } -#endif - } /* for (fds_idx = 0; fds_idx < __nfds; fds_idx++) */ - - /* - * nfd: - * the number of structures which have nonzero revents fields - * (in other words, those descriptors with events or - * errors reported) - * */ - *nfd = 0; - for (fds_idx = 0; fds_idx < __nfds; fds_idx++) - { - /* ignore negative fds */ - if (__fds[fds_idx].fd < 0) - { - continue; - } - - if (__fds[fds_idx].revents) - { - (*nfd)++; - } - } -} - -/* - * PRE: parameters are validated, - * vcom_socket_poll is always called with __timeout set to zero - * hence returns immediately - * - * ACTION: handle non negative validated vcom fds and ignore rest - */ - -/* - * implements vcom_socket_poll () interface - * - * internally uses vcom_socket_select () - * to realize the behavior - * */ -int -vcom_socket_poll_select_impl (struct pollfd *__fds, nfds_t __nfds, - int __timeout) -{ - int rv; - pid_t pid = getpid (); - - nfds_t fds_idx = 0; - int nfd = 0; - - /* vcom */ - int vcom_nfds = 0; - fd_set vcom_readfds; - fd_set vcom_writefds; - fd_set vcom_exceptfds; - int vcom_nfd = -1; - /* invalid max_vcom_fd is -1 */ - int max_vcom_fd = -1; - - /* __timeout is zero to get ready events and return immediately */ - struct timeval tv = {.tv_sec = 0,.tv_usec = 0 }; - - /* validate __nfds from select perspective */ - if (__nfds < 0 || __nfds > FD_SETSIZE) - { - rv = -EINVAL; - goto poll_done; - } - - /* zero vcom fd sets */ - /* - * V vcom fd set - */ -#define _(V) \ - FD_ZERO ((V)) - - _(&vcom_readfds); - _(&vcom_writefds); - _(&vcom_exceptfds); -#undef _ - - vcom_nfds = 0; - vcom_nfd = -1; - - - for (fds_idx = 0; fds_idx < __nfds; fds_idx++) - { - /* ignore negative fds */ - if (__fds[fds_idx].fd < 0) - { - continue; - } - - /* non negative validated vcom fds */ - if (__fds[fds_idx].fd > FD_SETSIZE) - { - rv = -EINVAL; - goto poll_done; - } - - /* max_vcom_fd and vcom_nfd */ - if (__fds[fds_idx].fd > max_vcom_fd) - { - /* requested events */ - if (__fds[fds_idx].events) - { - max_vcom_fd = __fds[fds_idx].fd; - } - } - ++vcom_nfd; - } - - vcom_nfds = max_vcom_fd != -1 ? max_vcom_fd + 1 : 0; - - if (!vcom_nfds) - { - rv = vcom_nfds; - goto poll_done; - } - - vcom_pollfds_2_selectfds ( - /* src */ - __fds, __nfds, - /* dest */ - vcom_nfds, - &vcom_readfds, &vcom_writefds, &vcom_exceptfds); - - /* select on vcom fds */ - vcom_nfd = vcom_socket_select (vcom_nfds, - &vcom_readfds, - &vcom_writefds, &vcom_exceptfds, &tv); - if (VCOM_DEBUG > 2) - fprintf (stderr, - "[%d] vcom_socket_select: " - "'%04d'='%04d'\n", pid, vcom_nfd, vcom_nfds); - - if (vcom_nfd < 0) - { - rv = vcom_nfd; - goto poll_done; - } - - vcom_selectfds_2_pollfds ( - /* dest */ - __fds, __nfds, &nfd, - /* src */ - vcom_nfds, - &vcom_readfds, &vcom_writefds, &vcom_exceptfds); - - rv = nfd; - -poll_done: - return rv; -} - -/* - * TBD: remove this static function once vppcom - * has an implementation in place - * - * ACTION: - */ -static int -vppcom_poll (struct pollfd *__fds, nfds_t __nfds, double time_to_wait) -{ - return -EOPNOTSUPP; -} - -int -vcom_socket_poll_vppcom_impl (struct pollfd *__fds, nfds_t __nfds, - int __timeout) -{ - nfds_t fds_idx = 0; - - /* in seconds eg. 3.123456789 seconds */ - double time_to_wait = (double) 0; - - i32 sid; - i32 vep_idx; - - /* replace vcom fd with session idx */ - for (fds_idx = 0; fds_idx < __nfds; fds_idx++) - { - /* ignore negative fds */ - if (__fds[fds_idx].fd < 0) - { - continue; - } - - /* non negative validated vcom fds */ - sid = vcom_socket_get_sid (__fds[fds_idx].fd); - if (sid != INVALID_SESSION_ID) - { - __fds[fds_idx].fd = sid; - } - else - { - /* get vep_idx */ - vep_idx = vcom_socket_get_vep_idx (__fds[fds_idx].fd); - if (vep_idx != INVALID_VEP_IDX) - { - __fds[fds_idx].fd = vep_idx; - } - else - { - return -EBADF; - } - } - } - - /* validate __timeout */ - if (__timeout > 0) - { - time_to_wait = (double) __timeout / (double) 1000; - } - else if (__timeout == 0) - { - time_to_wait = (double) 0; - } - else if (__timeout < 0) - { - time_to_wait = ~0; - } - else - { - return -EBADF; - } - - return vppcom_poll (__fds, __nfds, time_to_wait); -} - -int -vcom_socket_poll (struct pollfd *__fds, nfds_t __nfds, int __timeout) -{ - /* select an implementation */ - - /* return vcom_socket_poll_vppcom_impl (__fds, __nfds, __timeout); */ - return vcom_socket_poll_select_impl (__fds, __nfds, __timeout); -} - -#ifdef __USE_GNU -int -vcom_socket_ppoll (struct pollfd *__fds, nfds_t __nfds, - const struct timespec *__timeout, const __sigset_t * __ss) -{ - return -EOPNOTSUPP; -} -#endif - -int -vcom_socket_main_init (void) -{ - vcom_socket_main_t *vsm = &vcom_socket_main; - - if (VCOM_DEBUG > 0) - printf ("vcom_socket_main_init\n"); - - if (!vsm->init) - { - /* TBD: define FD_MAXSIZE and use it here */ - pool_alloc (vsm->vsockets, FD_SETSIZE); - vsm->sockidx_by_fd = hash_create (0, sizeof (i32)); - - pool_alloc (vsm->vepolls, FD_SETSIZE); - vsm->epollidx_by_epfd = hash_create (0, sizeof (i32)); - - pool_alloc (vsm->vepitems, FD_SETSIZE); - vsm->epitemidx_by_epfdfd = hash_create (0, sizeof (i32)); - - vsm->epitemidxs_by_epfd = hash_create (0, sizeof (i32 *)); - vsm->epitemidxs_by_fd = hash_create (0, sizeof (i32 *)); - - vsm->init = 1; - } - - return 0; -} - - -void -vcom_socket_main_show (void) -{ - vcom_socket_main_t *vsm = &vcom_socket_main; - vcom_socket_t *vsock; - - vcom_epoll_t *vepoll; - - vcom_epitem_t *vepitem; - - i32 epfd; - i32 fd; - i32 *vepitemidxs, *vepitemidxs_var; - - if (vsm->init) - { - /* from active list of vsockets show vsock */ - - /* *INDENT-OFF* */ - pool_foreach (vsock, vsm->vsockets, - ({ - printf( - "fd='%04d', sid='%08x',type='%-30s'\n", - vsock->fd, vsock->sid, - vcom_socket_type_str (vsock->type)); - })); - /* *INDENT-ON* */ - - /* from active list of vepolls, show vepoll */ - - /* *INDENT-OFF* */ - pool_foreach (vepoll, vsm->vepolls, - ({ - printf( - "epfd='%04d', vep_idx='%08x', " - "type='%-30s', " - "flags='%d', count='%d', close='%d'\n", - vepoll->epfd, vepoll->vep_idx, - vcom_socket_epoll_type_str (vepoll->type), - vepoll->flags, vepoll->count, vepoll->close); - })); - /* *INDENT-ON* */ - - /* from active list of vepitems, show vepitem */ - - /* *INDENT-OFF* */ - pool_foreach (vepitem, vsm->vepitems, - ({ - printf( - "epfd='%04d', fd='%04d', " - "next_fd='%04d', prev_fd='%04d', " - "type='%-30s', " - "events='%04x', revents='%04x'\n", - vepitem->epfd, vepitem->fd, - vepitem->next_fd, vepitem->prev_fd, - vcom_socket_vcom_fd_type_str (vepitem->type), - vepitem->event.events, vepitem->revent.events); - })); - - /* *INDENT-ON* */ - - /* show epitemidxs for epfd */ - /* *INDENT-OFF* */ - hash_foreach (epfd, vepitemidxs, - vsm->epitemidxs_by_epfd, - ({ - printf("\n[ '%04d': ", epfd); - vec_foreach (vepitemidxs_var,vepitemidxs) - { - printf("'%04d' ", (int)vepitemidxs_var[0]); - } - printf("]\n"); - })); - /* *INDENT-ON* */ - - /* show epitemidxs for fd */ - /* *INDENT-OFF* */ - hash_foreach (fd, vepitemidxs, - vsm->epitemidxs_by_fd, - ({ - printf("\n{ '%04d': ", fd); - vec_foreach (vepitemidxs_var,vepitemidxs) - { - printf("'%04d' ", (int)vepitemidxs_var[0]); - } - printf("}\n"); - })); - /* *INDENT-ON* */ - - } -} - -void -vcom_socket_main_destroy (void) -{ - vcom_socket_main_t *vsm = &vcom_socket_main; - vcom_socket_t *vsock; - - vcom_epoll_t *vepoll; - - vcom_epitem_t *vepitem; - - i32 epfd; - i32 fd; - i32 *vepitemidxs; - - - if (VCOM_DEBUG > 0) - printf ("vcom_socket_main_destroy\n"); - - if (vsm->init) - { - - /* - * from active list of vepitems, - * remove all "vepitem" elements from the pool in a safe way - * */ - - /* *INDENT-OFF* */ - pool_flush (vepitem, vsm->vepitems, - ({ - if (vepitem->type == FD_TYPE_EPOLL || FD_TYPE_VCOM_SOCKET) - { - vcom_socket_epoll_ctl1 (vepitem->epfd, EPOLL_CTL_DEL, - vepitem->fd, NULL); - vepitem_init (vepitem); - } - })); - /* *INDENT-ON* */ - - pool_free (vsm->vepitems); - hash_free (vsm->epitemidx_by_epfdfd); - - /* free vepitemidxs for each epfd */ - /* *INDENT-OFF* */ - hash_foreach (epfd, vepitemidxs, - vsm->epitemidxs_by_epfd, - ({ - vec_free (vepitemidxs); - })); - /* *INDENT-ON* */ - hash_free (vsm->epitemidxs_by_epfd); - - /* free vepitemidxs for each fd */ - /* *INDENT-OFF* */ - hash_foreach (fd, vepitemidxs, - vsm->epitemidxs_by_fd, - ({ - vec_free (vepitemidxs); - })); - /* *INDENT-ON* */ - hash_free (vsm->epitemidxs_by_fd); - - - /* - * from active list of vsockets, - * close socket and vppcom session - * */ - - /* *INDENT-OFF* */ - pool_foreach (vsock, vsm->vsockets, - ({ - if (vsock->type == SOCKET_TYPE_VPPCOM_BOUND) - { - vppcom_session_close (vsock->sid); - vcom_socket_close_socket (vsock->fd); - vsocket_init (vsock); - } - })); - /* *INDENT-ON* */ - - /* - * return vsocket element to the pool - * */ - - /* *INDENT-OFF* */ - pool_flush (vsock, vsm->vsockets, - ({ - // vsocket_init(vsock); - ; - })); - /* *INDENT-ON* */ - - pool_free (vsm->vsockets); - hash_free (vsm->sockidx_by_fd); - - /* - * from active list of vepolls, - * close epoll and vppcom_epoll - * */ - - /* *INDENT-OFF* */ - pool_foreach (vepoll, vsm->vepolls, - ({ - if (vepoll->type == EPOLL_TYPE_VPPCOM_BOUND) - { - vppcom_session_close (vepoll->vep_idx); - vcom_socket_close_epoll (vepoll->epfd); /* TBD: */ - vepoll_init (vepoll); - } - })); - /* *INDENT-ON* */ - - /* - * return vepoll element to the pool - * */ - - /* *INDENT-OFF* */ - pool_flush (vepoll, vsm->vepolls, - ({ - // vepoll_init(vepoll); - ; - })); - /* *INDENT-ON* */ - - pool_free (vsm->vepolls); - hash_free (vsm->epollidx_by_epfd); - - vsm->init = 0; - } -} - - -/* - * fd.io coding-style-patch-verification: ON - * - * Local Variables: - * eval: (c-set-style "gnu") - * End: - */ diff --git a/extras/vcl-ldpreload/src/libvcl-ldpreload/vcom_socket.h b/extras/vcl-ldpreload/src/libvcl-ldpreload/vcom_socket.h deleted file mode 100644 index 9dc18f58af2..00000000000 --- a/extras/vcl-ldpreload/src/libvcl-ldpreload/vcom_socket.h +++ /dev/null @@ -1,470 +0,0 @@ -/* - * Copyright (c) 2017 Cisco and/or its affiliates. - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at: - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -#ifndef included_vcom_socket_h -#define included_vcom_socket_h - -#include <string.h> - -#include <libvcl-ldpreload/vcom_glibc_socket.h> -#include <vppinfra/types.h> - -#define INVALID_SESSION_ID (~0) -#define INVALID_FD (~0) - -#define INVALID_VEP_IDX INVALID_SESSION_ID -#define INVALID_EPFD INVALID_FD - -typedef enum -{ - SOCKET_TYPE_UNBOUND = 0, - SOCKET_TYPE_KERNEL_BOUND, - SOCKET_TYPE_VPPCOM_BOUND -} vcom_socket_type_t; - -typedef enum -{ - EPOLL_TYPE_UNBOUND = 0, - EPOLL_TYPE_KERNEL_BOUND, - EPOLL_TYPE_VPPCOM_BOUND -} vcom_epoll_type_t; - -typedef enum -{ - FD_TYPE_INVALID = 0, - FD_TYPE_KERNEL, - FD_TYPE_EPOLL, - FD_TYPE_VCOM_SOCKET, - /* add new types here */ - /* FD_TYPE_MAX should be the last entry */ - FD_TYPE_MAX -} vcom_fd_type_t; - -typedef struct -{ - /* file descriptor - - * fd 0, 1, 2 have special meaning and are reserved, - * -1 denote invalid fd */ - i32 fd; - - /* session id - -1 denote invalid sid */ - i32 sid; - - /* socket type */ - vcom_socket_type_t type; - - /* vcom socket attributes here */ - -} vcom_socket_t; - -typedef struct -{ - /* epoll file descriptor - - * epfd 0, 1, 2 have special meaning and are reserved, - * -1 denote invalid epfd */ - i32 epfd; - - /* vep idx - -1 denote invalid vep_idx */ - i32 vep_idx; - - /* epoll type */ - vcom_epoll_type_t type; - - /* flags - 0 or EPOLL_CLOEXEC */ - i32 flags; - - /* vcom epoll attributes here */ - - /* - * 00. count of file descriptors currently registered - * on this epoll instance. - * 01. number of file descriptors in the epoll set. - * 02. EPOLL_CTL_ADD, EPOLL_CTL_MOD, EPOLL_CTL_DEL - * update the count. - * 03. cached for frequent access. - * */ - i32 count; - - /* close( ) called on this epoll instance */ - /* 0 - close ( ) not called, 1 - close( ) called. */ - u32 close; - -} vcom_epoll_t; - -typedef struct -{ - /* "container" of this item */ - i32 epfd; - - /* fd - file descriptor information this item refers to */ - i32 fd; - /* next and prev fd in the "epoll set" of epfd */ - i32 next_fd; - i32 prev_fd; - - /* vcom fd type */ - vcom_fd_type_t type; - - /* interested events and the source fd */ - struct epoll_event event; - - /* ready events and the source fd */ - struct epoll_event revent; - - /* epitem attributes here */ - -} vcom_epitem_t; - -typedef union vcom_epitem_key -{ - struct - { - i32 fd; - i32 epfd; - }; - i64 key; -} __EPOLL_PACKED vcom_epitem_key_t; - -static inline char * -vcom_socket_type_str (vcom_socket_type_t t) -{ - switch (t) - { - case SOCKET_TYPE_UNBOUND: - return "SOCKET_TYPE_UNBOUND"; - - case SOCKET_TYPE_KERNEL_BOUND: - return "SOCKET_TYPE_KERNEL_BOUND"; - - case SOCKET_TYPE_VPPCOM_BOUND: - return "SOCKET_TYPE_VPPCOM_BOUND"; - - default: - return "SOCKET_TYPE_UNKNOWN"; - } -} - -static inline char * -vcom_socket_epoll_type_str (vcom_epoll_type_t t) -{ - switch (t) - { - case EPOLL_TYPE_UNBOUND: - return "EPOLL_TYPE_UNBOUND"; - - case EPOLL_TYPE_KERNEL_BOUND: - return "EPOLL_TYPE_KERNEL_BOUND"; - - case EPOLL_TYPE_VPPCOM_BOUND: - return "EPOLL_TYPE_VPPCOM_BOUND"; - - default: - return "EPOLL_TYPE_UNKNOWN"; - } -} - -static inline char * -vcom_socket_vcom_fd_type_str (vcom_fd_type_t t) -{ - switch (t) - { - case FD_TYPE_KERNEL: - return "FD_TYPE_KERNEL"; - - case FD_TYPE_EPOLL: - return "FD_TYPE_EPOLL"; - - case FD_TYPE_VCOM_SOCKET: - return "FD_TYPE_VCOM_SOCKET"; - - default: - return "FD_TYPE_UNKNOWN"; - } -} - -static inline int -vcom_socket_type_is_vppcom_bound (vcom_socket_type_t t) -{ - return t == SOCKET_TYPE_VPPCOM_BOUND; -} - -static inline int -vcom_socket_epoll_type_is_vppcom_bound (vcom_epoll_type_t t) -{ - return t == EPOLL_TYPE_VPPCOM_BOUND; -} - -static inline void -vsocket_init (vcom_socket_t * vsock) -{ - memset (vsock, 0, sizeof (*vsock)); - - vsock->fd = INVALID_FD; - vsock->sid = INVALID_SESSION_ID; - vsock->type = SOCKET_TYPE_UNBOUND; - /* vcom socket attributes init here */ -} - -static inline void -vepoll_init (vcom_epoll_t * vepoll) -{ - memset (vepoll, 0, sizeof (*vepoll)); - - vepoll->epfd = INVALID_EPFD; - vepoll->vep_idx = INVALID_VEP_IDX; - vepoll->type = EPOLL_TYPE_UNBOUND; - vepoll->flags = 0; - - vepoll->count = 0; - vepoll->close = 0; - /* vcom epoll attributes init here */ -} - -static inline void -vepitem_init (vcom_epitem_t * vepitem) -{ - struct epoll_event event = {.events = 0,.data.fd = INVALID_FD }; - - memset (vepitem, 0, sizeof (*vepitem)); - - vepitem->epfd = INVALID_EPFD; - - vepitem->fd = INVALID_FD; - vepitem->next_fd = INVALID_FD; - vepitem->prev_fd = INVALID_FD; - - vepitem->type = FD_TYPE_INVALID; - - vepitem->event = event; - vepitem->revent = event; - /* vepoll attributes init here */ -} - -static inline void -vepitemkey_init (vcom_epitem_key_t * epfdfd) -{ - memset (epfdfd, 0, sizeof (*epfdfd)); - - epfdfd->epfd = INVALID_EPFD; - epfdfd->fd = INVALID_FD; -} - -static inline void -vsocket_set (vcom_socket_t * vsock, i32 fd, i32 sid, vcom_socket_type_t type) -{ - vsock->fd = fd; - vsock->sid = sid; - vsock->type = type; - /* vcom socket attributes set here */ -} - -static inline void -vepoll_set (vcom_epoll_t * vepoll, - i32 epfd, i32 vep_idx, - vcom_epoll_type_t type, i32 flags, i32 count, u32 close) -{ - vepoll->epfd = epfd; - vepoll->vep_idx = vep_idx; - vepoll->type = type; - vepoll->flags = flags; - - vepoll->count = count; - vepoll->close = close; - /* vcom epoll attributes set here */ -} - -static inline void -vepitem_set (vcom_epitem_t * vepitem, - i32 epfd, - i32 fd, i32 next_fd, i32 prev_fd, - vcom_fd_type_t type, - struct epoll_event event, struct epoll_event revent) -{ - vepitem->epfd = epfd; - - vepitem->fd = fd; - vepitem->next_fd = next_fd; - vepitem->prev_fd = prev_fd; - - vepitem->type = type; - - vepitem->event = event; - vepitem->revent = revent; - /* vcom epitem attributes set here */ -} - -static inline void -vepitemkey_set (vcom_epitem_key_t * epfdfd, i32 epfd, i32 fd) -{ - epfdfd->epfd = epfd; - epfdfd->fd = fd; -} - -static inline int -vsocket_is_vppcom_bound (vcom_socket_t * vsock) -{ - return vcom_socket_type_is_vppcom_bound (vsock->type); -} - -static inline int -vepoll_is_vppcom_bound (vcom_epoll_t * vepoll) -{ - return vcom_socket_epoll_type_is_vppcom_bound (vepoll->type); -} - -int vcom_socket_main_init (void); - -void vcom_socket_main_destroy (void); - -void vcom_socket_main_show (void); - -int vcom_socket_is_vcom_fd (int fd); - -int vcom_socket_is_vcom_epfd (int epfd); - -int vcom_socket_close (int __fd); - -ssize_t vcom_socket_read (int __fd, void *__buf, size_t __nbytes); - -ssize_t vcom_socket_readv (int __fd, const struct iovec *__iov, int __iovcnt); - -ssize_t vcom_socket_write (int __fd, const void *__buf, size_t __n); - -ssize_t vcom_socket_writev (int __fd, const struct iovec *__iov, - int __iovcnt); - -int vcom_socket_fcntl_va (int __fd, int __cmd, va_list __ap); - -int vcom_socket_ioctl_va (int __fd, unsigned long int __cmd, va_list __ap); - -int -vcom_socket_select (int vcom_nfds, fd_set * __restrict vcom_readfds, - fd_set * __restrict vcom_writefds, - fd_set * __restrict vcom_exceptfds, - struct timeval *__restrict timeout); - - -int vcom_socket_socket (int __domain, int __type, int __protocol); - -int -vcom_socket_socketpair (int __domain, int __type, int __protocol, - int __fds[2]); - -int vcom_socket_bind (int __fd, __CONST_SOCKADDR_ARG __addr, socklen_t __len); - -int -vcom_socket_getsockname (int __fd, __SOCKADDR_ARG __addr, - socklen_t * __restrict __len); - -int -vcom_socket_connect (int __fd, __CONST_SOCKADDR_ARG __addr, socklen_t __len); - -int -vcom_socket_getpeername (int __fd, __SOCKADDR_ARG __addr, - socklen_t * __restrict __len); - -ssize_t -vcom_socket_send (int __fd, const void *__buf, size_t __n, int __flags); - -ssize_t vcom_socket_recv (int __fd, void *__buf, size_t __n, int __flags); - -/* - * RETURN 1 if __fd is (SOCK_STREAM, SOCK_SEQPACKET), - * 0 otherwise - * */ -int vcom_socket_is_connection_mode_socket (int __fd); - -ssize_t -vcom_socket_sendto (int __fd, const void *__buf, size_t __n, - int __flags, __CONST_SOCKADDR_ARG __addr, - socklen_t __addr_len); - -ssize_t -vcom_socket_recvfrom (int __fd, void *__restrict __buf, size_t __n, - int __flags, __SOCKADDR_ARG __addr, - socklen_t * __restrict __addr_len); - -ssize_t -vcom_socket_sendmsg (int __fd, const struct msghdr *__message, int __flags); - -#ifdef __USE_GNU -int -vcom_socket_sendmmsg (int __fd, struct mmsghdr *__vmessages, - unsigned int __vlen, int __flags); -#endif - -ssize_t vcom_socket_recvmsg (int __fd, struct msghdr *__message, int __flags); - -#ifdef __USE_GNU -int -vcom_socket_recvmmsg (int __fd, struct mmsghdr *__vmessages, - unsigned int __vlen, int __flags, - struct timespec *__tmo); -#endif - -int -vcom_socket_getsockopt (int __fd, int __level, int __optname, - void *__restrict __optval, - socklen_t * __restrict __optlen); - -int -vcom_socket_setsockopt (int __fd, int __level, int __optname, - const void *__optval, socklen_t __optlen); - -int vcom_socket_listen (int __fd, int __n); - -int -vcom_socket_accept (int __fd, __SOCKADDR_ARG __addr, - socklen_t * __restrict __addr_len); - -#ifdef __USE_GNU -int -vcom_socket_accept4 (int __fd, __SOCKADDR_ARG __addr, - socklen_t * __restrict __addr_len, int __flags); -#endif - -int vcom_socket_shutdown (int __fd, int __how); - -int vcom_socket_epoll_create1 (int __flags); - -int -vcom_socket_epoll_ctl (int __epfd, int __op, int __fd, - struct epoll_event *__event); - -int -vcom_socket_epoll_pwait (int __epfd, struct epoll_event *__events, - int __maxevents, int __timeout, - const __sigset_t * __ss); - -/* - * handle only vcom fds - */ -int vcom_socket_poll (struct pollfd *__fds, nfds_t __nfds, int __timeout); - -#ifdef __USE_GNU -int -vcom_socket_ppoll (struct pollfd *__fds, nfds_t __nfds, - const struct timespec *__timeout, const __sigset_t * __ss); -#endif - -#endif /* included_vcom_socket_h */ - -/* - * fd.io coding-style-patch-verification: ON - * - * Local Variables: - * eval: (c-set-style "gnu") - * End: - */ diff --git a/extras/vcl-ldpreload/src/libvcl-ldpreload/vcom_socket_wrapper.c b/extras/vcl-ldpreload/src/libvcl-ldpreload/vcom_socket_wrapper.c deleted file mode 100644 index 9b961af6bad..00000000000 --- a/extras/vcl-ldpreload/src/libvcl-ldpreload/vcom_socket_wrapper.c +++ /dev/null @@ -1,906 +0,0 @@ -/* - * Copyright (c) 2016 Cisco and/or its affiliates. - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at: - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -/* - * Copyright (c) 2005-2008 Jelmer Vernooij <jelmer@samba.org> - * Copyright (C) 2006-2014 Stefan Metzmacher <metze@samba.org> - * Copyright (C) 2013-2014 Andreas Schneider <asn@samba.org> - * - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * - * 3. Neither the name of the author nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - * - */ - -/* - Socket wrapper library. Passes all socket communication over - unix domain sockets if the environment variable SOCKET_WRAPPER_DIR - is set. -*/ - -#include <signal.h> -#include <dlfcn.h> - -#include <stdio.h> -#include <stdarg.h> -#include <unistd.h> -#include <pthread.h> - -#include <libvcl-ldpreload/vcom_socket_wrapper.h> - - -enum swrap_dbglvl_e -{ - SWRAP_LOG_ERROR = 0, - SWRAP_LOG_WARN, - SWRAP_LOG_DEBUG, - SWRAP_LOG_TRACE -}; - - -/* Macros for accessing mutexes */ -#define SWRAP_LOCK(m) do { \ - pthread_mutex_lock(&(m ## _mutex)); \ -} while(0) - -#define SWRAP_UNLOCK(m) do { \ - pthread_mutex_unlock(&(m ## _mutex)); \ -} while(0) - -/* Add new global locks here please */ -#define SWRAP_LOCK_ALL \ - SWRAP_LOCK(libc_symbol_binding); \ - -#define SWRAP_UNLOCK_ALL \ - SWRAP_UNLOCK(libc_symbol_binding); \ - - - -/* The mutex for accessing the global libc.symbols */ -static pthread_mutex_t libc_symbol_binding_mutex = PTHREAD_MUTEX_INITIALIZER; - -/* Function prototypes */ - -#ifdef NDEBUG -#define SWRAP_LOG(...) -#else -static void -swrap_log (enum swrap_dbglvl_e dbglvl, const char *func, - const char *format, ...) -PRINTF_ATTRIBUTE (3, 4); -#define SWRAP_LOG(dbglvl, ...) swrap_log((dbglvl), __func__, __VA_ARGS__) - - static void - swrap_log (enum swrap_dbglvl_e dbglvl, - const char *func, const char *format, ...) -{ - char buffer[1024]; - va_list va; - unsigned int lvl = SWRAP_LOG_WARN; - - va_start (va, format); - vsnprintf (buffer, sizeof (buffer), format, va); - va_end (va); - - if (lvl >= dbglvl) - { - switch (dbglvl) - { - case SWRAP_LOG_ERROR: - fprintf (stderr, - "SWRAP_ERROR(%d) - %s: %s\n", - (int) getpid (), func, buffer); - break; - case SWRAP_LOG_WARN: - fprintf (stderr, - "SWRAP_WARN(%d) - %s: %s\n", - (int) getpid (), func, buffer); - break; - case SWRAP_LOG_DEBUG: - fprintf (stderr, - "SWRAP_DEBUG(%d) - %s: %s\n", - (int) getpid (), func, buffer); - break; - case SWRAP_LOG_TRACE: - fprintf (stderr, - "SWRAP_TRACE(%d) - %s: %s\n", - (int) getpid (), func, buffer); - break; - } - } -} -#endif - - -/********************************************************* - * SWRAP LOADING LIBC FUNCTIONS - *********************************************************/ - -#ifdef HAVE_ACCEPT4 -typedef int (*__libc_accept4) (int sockfd, - struct sockaddr * addr, - socklen_t * addrlen, int flags); -#else -typedef int (*__libc_accept) (int sockfd, - struct sockaddr * addr, socklen_t * addrlen); -#endif -typedef int (*__libc_bind) (int sockfd, - const struct sockaddr * addr, socklen_t addrlen); -typedef int (*__libc_close) (int fd); -typedef int (*__libc_connect) (int sockfd, - const struct sockaddr * addr, - socklen_t addrlen); - -#if 0 -/* TBD: dup and dup2 to be implemented later */ -typedef int (*__libc_dup) (int fd); -typedef int (*__libc_dup2) (int oldfd, int newfd); -#endif - -typedef int (*__libc_fcntl) (int fd, int cmd, ...); -typedef FILE *(*__libc_fopen) (const char *name, const char *mode); -#ifdef HAVE_FOPEN64 -typedef FILE *(*__libc_fopen64) (const char *name, const char *mode); -#endif -#ifdef HAVE_EVENTFD -typedef int (*__libc_eventfd) (int count, int flags); -#endif -typedef int (*__libc_getpeername) (int sockfd, - struct sockaddr * addr, - socklen_t * addrlen); -typedef int (*__libc_getsockname) (int sockfd, - struct sockaddr * addr, - socklen_t * addrlen); -typedef int (*__libc_getsockopt) (int sockfd, - int level, - int optname, - void *optval, socklen_t * optlen); -typedef int (*__libc_ioctl) (int d, unsigned long int request, ...); -typedef int (*__libc_listen) (int sockfd, int backlog); -typedef int (*__libc_open) (const char *pathname, int flags, mode_t mode); -#ifdef HAVE_OPEN64 -typedef int (*__libc_open64) (const char *pathname, int flags, mode_t mode); -#endif /* HAVE_OPEN64 */ -typedef int (*__libc_openat) (int dirfd, const char *path, int flags, ...); -typedef int (*__libc_pipe) (int pipefd[2]); -typedef int (*__libc_read) (int fd, void *buf, size_t count); -typedef ssize_t (*__libc_readv) (int fd, const struct iovec * iov, - int iovcnt); -typedef int (*__libc_recv) (int sockfd, void *buf, size_t len, int flags); -typedef int (*__libc_recvfrom) (int sockfd, - void *buf, - size_t len, - int flags, - struct sockaddr * src_addr, - socklen_t * addrlen); -typedef int (*__libc_recvmsg) (int sockfd, const struct msghdr * msg, - int flags); -typedef int (*__libc_send) (int sockfd, const void *buf, size_t len, - int flags); -typedef int (*__libc_sendmsg) (int sockfd, const struct msghdr * msg, - int flags); -typedef int (*__libc_sendto) (int sockfd, const void *buf, size_t len, - int flags, const struct sockaddr * dst_addr, - socklen_t addrlen); -typedef int (*__libc_setsockopt) (int sockfd, int level, int optname, - const void *optval, socklen_t optlen); -#ifdef HAVE_SIGNALFD -typedef int (*__libc_signalfd) (int fd, const sigset_t * mask, int flags); -#endif -typedef int (*__libc_socket) (int domain, int type, int protocol); -typedef int (*__libc_socketpair) (int domain, int type, int protocol, - int sv[2]); -#ifdef HAVE_TIMERFD_CREATE -typedef int (*__libc_timerfd_create) (int clockid, int flags); -#endif -typedef ssize_t (*__libc_write) (int fd, const void *buf, size_t count); -typedef ssize_t (*__libc_writev) (int fd, const struct iovec * iov, - int iovcnt); - -typedef int (*__libc_shutdown) (int fd, int how); - -typedef int (*__libc_select) (int __nfds, fd_set * __restrict __readfds, - fd_set * __restrict __writefds, - fd_set * __restrict __exceptfds, - struct timeval * __restrict __timeout); - -#ifdef __USE_XOPEN2K -typedef int (*__libc_pselect) (int __nfds, fd_set * __restrict __readfds, - fd_set * __restrict __writefds, - fd_set * __restrict __exceptfds, - const struct timespec * __restrict __timeout, - const __sigset_t * __restrict __sigmask); -#endif - -typedef int (*__libc_epoll_create) (int __size); - -typedef int (*__libc_epoll_create1) (int __flags); - -typedef int (*__libc_epoll_ctl) (int __epfd, int __op, int __fd, - struct epoll_event * __event); - -typedef int (*__libc_epoll_wait) (int __epfd, struct epoll_event * __events, - int __maxevents, int __timeout); - -typedef int (*__libc_epoll_pwait) (int __epfd, struct epoll_event * __events, - int __maxevents, int __timeout, - const __sigset_t * __ss); - -typedef int (*__libc_poll) (struct pollfd * __fds, nfds_t __nfds, - int __timeout); - -#ifdef __USE_GNU -typedef int (*__libc_ppoll) (struct pollfd * __fds, nfds_t __nfds, - const struct timespec * __timeout, - const __sigset_t * __ss); -#endif - - -#define SWRAP_SYMBOL_ENTRY(i) \ - union { \ - __libc_##i f; \ - void *obj; \ - } _libc_##i - -struct swrap_libc_symbols -{ -#ifdef HAVE_ACCEPT4 - SWRAP_SYMBOL_ENTRY (accept4); -#else - SWRAP_SYMBOL_ENTRY (accept); -#endif - SWRAP_SYMBOL_ENTRY (bind); - SWRAP_SYMBOL_ENTRY (close); - SWRAP_SYMBOL_ENTRY (connect); -#if 0 - /* TBD: dup and dup2 to be implemented later */ - SWRAP_SYMBOL_ENTRY (dup); - SWRAP_SYMBOL_ENTRY (dup2); -#endif - SWRAP_SYMBOL_ENTRY (fcntl); - SWRAP_SYMBOL_ENTRY (fopen); -#ifdef HAVE_FOPEN64 - SWRAP_SYMBOL_ENTRY (fopen64); -#endif -#ifdef HAVE_EVENTFD - SWRAP_SYMBOL_ENTRY (eventfd); -#endif - SWRAP_SYMBOL_ENTRY (getpeername); - SWRAP_SYMBOL_ENTRY (getsockname); - SWRAP_SYMBOL_ENTRY (getsockopt); - SWRAP_SYMBOL_ENTRY (ioctl); - SWRAP_SYMBOL_ENTRY (listen); - SWRAP_SYMBOL_ENTRY (open); -#ifdef HAVE_OPEN64 - SWRAP_SYMBOL_ENTRY (open64); -#endif - SWRAP_SYMBOL_ENTRY (openat); - SWRAP_SYMBOL_ENTRY (pipe); - SWRAP_SYMBOL_ENTRY (read); - SWRAP_SYMBOL_ENTRY (readv); - SWRAP_SYMBOL_ENTRY (recv); - SWRAP_SYMBOL_ENTRY (recvfrom); - SWRAP_SYMBOL_ENTRY (recvmsg); - SWRAP_SYMBOL_ENTRY (send); - SWRAP_SYMBOL_ENTRY (sendmsg); - SWRAP_SYMBOL_ENTRY (sendto); - SWRAP_SYMBOL_ENTRY (setsockopt); -#ifdef HAVE_SIGNALFD - SWRAP_SYMBOL_ENTRY (signalfd); -#endif - SWRAP_SYMBOL_ENTRY (socket); - SWRAP_SYMBOL_ENTRY (socketpair); -#ifdef HAVE_TIMERFD_CREATE - SWRAP_SYMBOL_ENTRY (timerfd_create); -#endif - SWRAP_SYMBOL_ENTRY (write); - SWRAP_SYMBOL_ENTRY (writev); - - SWRAP_SYMBOL_ENTRY (shutdown); - SWRAP_SYMBOL_ENTRY (select); -#ifdef __USE_XOPEN2K - SWRAP_SYMBOL_ENTRY (pselect); -#endif - SWRAP_SYMBOL_ENTRY (epoll_create); - SWRAP_SYMBOL_ENTRY (epoll_create1); - SWRAP_SYMBOL_ENTRY (epoll_ctl); - SWRAP_SYMBOL_ENTRY (epoll_wait); - SWRAP_SYMBOL_ENTRY (epoll_pwait); - SWRAP_SYMBOL_ENTRY (poll); -#ifdef __USE_GNU - SWRAP_SYMBOL_ENTRY (ppoll); -#endif -}; - -struct swrap -{ - struct - { - void *handle; - void *socket_handle; - struct swrap_libc_symbols symbols; - } libc; -}; - -static struct swrap swrap; - -#define LIBC_NAME "libc.so" - -enum swrap_lib -{ - SWRAP_LIBC, -}; - -#ifndef NDEBUG -static const char * -swrap_str_lib (enum swrap_lib lib) -{ - switch (lib) - { - case SWRAP_LIBC: - return "libc"; - } - - /* Compiler would warn us about unhandled enum value if we get here */ - return "unknown"; -} -#endif - -static void * -swrap_load_lib_handle (enum swrap_lib lib) -{ - int flags = RTLD_LAZY; - void *handle = NULL; - int i; - -#ifdef RTLD_DEEPBIND - flags |= RTLD_DEEPBIND; -#endif - - switch (lib) - { - case SWRAP_LIBC: - handle = swrap.libc.handle; -#ifdef LIBC_SO - if (handle == NULL) - { - handle = dlopen (LIBC_SO, flags); - - swrap.libc.handle = handle; - } -#endif - if (handle == NULL) - { - for (i = 10; i >= 0; i--) - { - char soname[256] = { 0 }; - - snprintf (soname, sizeof (soname), "libc.so.%d", i); - handle = dlopen (soname, flags); - if (handle != NULL) - { - break; - } - } - - swrap.libc.handle = handle; - } - break; - } - - if (handle == NULL) - { - SWRAP_LOG (SWRAP_LOG_ERROR, - "Failed to dlopen library: %s\n", dlerror ()); - exit (-1); - } - - return handle; -} - -static void * -_swrap_bind_symbol (enum swrap_lib lib, const char *fn_name) -{ - void *handle; - void *func; - - handle = swrap_load_lib_handle (lib); - - func = dlsym (handle, fn_name); - if (func == NULL) - { - SWRAP_LOG (SWRAP_LOG_ERROR, - "Failed to find %s: %s\n", fn_name, dlerror ()); - exit (-1); - } - - SWRAP_LOG (SWRAP_LOG_TRACE, - "Loaded %s from %s", fn_name, swrap_str_lib (lib)); - - return func; -} - -#define swrap_bind_symbol_libc(sym_name) \ - SWRAP_LOCK(libc_symbol_binding); \ - if (swrap.libc.symbols._libc_##sym_name.obj == NULL) { \ - swrap.libc.symbols._libc_##sym_name.obj = \ - _swrap_bind_symbol(SWRAP_LIBC, #sym_name); \ - } \ - SWRAP_UNLOCK(libc_symbol_binding) - -/* - * IMPORTANT - * - * Functions especially from libc need to be loaded individually, you can't load - * all at once or gdb will segfault at startup. The same applies to valgrind and - * has probably something todo with with the linker. - * So we need load each function at the point it is called the first time. - */ -#ifdef HAVE_ACCEPT4 -int -libc_accept4 (int sockfd, - struct sockaddr *addr, socklen_t * addrlen, int flags) -{ - swrap_bind_symbol_libc (accept4); - - return swrap.libc.symbols._libc_accept4.f (sockfd, addr, addrlen, flags); -} - -#else /* HAVE_ACCEPT4 */ - -int -libc_accept (int sockfd, struct sockaddr *addr, socklen_t * addrlen) -{ - swrap_bind_symbol_libc (accept); - - return swrap.libc.symbols._libc_accept.f (sockfd, addr, addrlen); -} -#endif /* HAVE_ACCEPT4 */ - -int -libc_bind (int sockfd, const struct sockaddr *addr, socklen_t addrlen) -{ - swrap_bind_symbol_libc (bind); - - return swrap.libc.symbols._libc_bind.f (sockfd, addr, addrlen); -} - -int -libc_close (int fd) -{ - swrap_bind_symbol_libc (close); - - return swrap.libc.symbols._libc_close.f (fd); -} - -int -libc_connect (int sockfd, const struct sockaddr *addr, socklen_t addrlen) -{ - swrap_bind_symbol_libc (connect); - - return swrap.libc.symbols._libc_connect.f (sockfd, addr, addrlen); -} - -#if 0 -/* TBD: dup and dup2 to be implemented later */ -int -libc_dup (int fd) -{ - swrap_bind_symbol_libc (dup); - - return swrap.libc.symbols._libc_dup.f (fd); -} - -int -libc_dup2 (int oldfd, int newfd) -{ - swrap_bind_symbol_libc (dup2); - - return swrap.libc.symbols._libc_dup2.f (oldfd, newfd); -} -#endif - -#ifdef HAVE_EVENTFD -int -libc_eventfd (int count, int flags) -{ - swrap_bind_symbol_libc (eventfd); - - return swrap.libc.symbols._libc_eventfd.f (count, flags); -} -#endif - -DO_NOT_SANITIZE_ADDRESS_ATTRIBUTE int -libc_vfcntl (int fd, int cmd, va_list ap) -{ - long int args[4]; - int rc; - int i; - - swrap_bind_symbol_libc (fcntl); - - for (i = 0; i < 4; i++) - { - args[i] = va_arg (ap, long int); - } - - rc = swrap.libc.symbols._libc_fcntl.f (fd, - cmd, - args[0], args[1], args[2], args[3]); - - return rc; -} - -DO_NOT_SANITIZE_ADDRESS_ATTRIBUTE int -libc_vioctl (int fd, int cmd, va_list ap) -{ - long int args[4]; - int rc; - int i; - - swrap_bind_symbol_libc (ioctl); - - for (i = 0; i < 4; i++) - { - args[i] = va_arg (ap, long int); - } - - rc = swrap.libc.symbols._libc_ioctl.f (fd, - cmd, - args[0], args[1], args[2], args[3]); - - return rc; -} - -int -libc_getpeername (int sockfd, struct sockaddr *addr, socklen_t * addrlen) -{ - swrap_bind_symbol_libc (getpeername); - - return swrap.libc.symbols._libc_getpeername.f (sockfd, addr, addrlen); -} - -int -libc_getsockname (int sockfd, struct sockaddr *addr, socklen_t * addrlen) -{ - swrap_bind_symbol_libc (getsockname); - - return swrap.libc.symbols._libc_getsockname.f (sockfd, addr, addrlen); -} - -int -libc_getsockopt (int sockfd, - int level, int optname, void *optval, socklen_t * optlen) -{ - swrap_bind_symbol_libc (getsockopt); - - return swrap.libc.symbols._libc_getsockopt.f (sockfd, - level, - optname, optval, optlen); -} - -int -libc_listen (int sockfd, int backlog) -{ - swrap_bind_symbol_libc (listen); - - return swrap.libc.symbols._libc_listen.f (sockfd, backlog); -} - -int -libc_read (int fd, void *buf, size_t count) -{ - swrap_bind_symbol_libc (read); - - return swrap.libc.symbols._libc_read.f (fd, buf, count); -} - -ssize_t -libc_readv (int fd, const struct iovec * iov, int iovcnt) -{ - swrap_bind_symbol_libc (readv); - - return swrap.libc.symbols._libc_readv.f (fd, iov, iovcnt); -} - -int -libc_recv (int sockfd, void *buf, size_t len, int flags) -{ - swrap_bind_symbol_libc (recv); - - return swrap.libc.symbols._libc_recv.f (sockfd, buf, len, flags); -} - -int -libc_recvfrom (int sockfd, - void *buf, - size_t len, - int flags, struct sockaddr *src_addr, socklen_t * addrlen) -{ - swrap_bind_symbol_libc (recvfrom); - - return swrap.libc.symbols._libc_recvfrom.f (sockfd, - buf, - len, flags, src_addr, addrlen); -} - -int -libc_recvmsg (int sockfd, struct msghdr *msg, int flags) -{ - swrap_bind_symbol_libc (recvmsg); - - return swrap.libc.symbols._libc_recvmsg.f (sockfd, msg, flags); -} - -int -libc_send (int sockfd, const void *buf, size_t len, int flags) -{ - swrap_bind_symbol_libc (send); - - return swrap.libc.symbols._libc_send.f (sockfd, buf, len, flags); -} - -int -libc_sendmsg (int sockfd, const struct msghdr *msg, int flags) -{ - swrap_bind_symbol_libc (sendmsg); - - return swrap.libc.symbols._libc_sendmsg.f (sockfd, msg, flags); -} - -int -libc_sendto (int sockfd, - const void *buf, - size_t len, - int flags, const struct sockaddr *dst_addr, socklen_t addrlen) -{ - swrap_bind_symbol_libc (sendto); - - return swrap.libc.symbols._libc_sendto.f (sockfd, - buf, - len, flags, dst_addr, addrlen); -} - -int -libc_setsockopt (int sockfd, - int level, int optname, const void *optval, socklen_t optlen) -{ - swrap_bind_symbol_libc (setsockopt); - - return swrap.libc.symbols._libc_setsockopt.f (sockfd, - level, - optname, optval, optlen); -} - -int -libc_socket (int domain, int type, int protocol) -{ - swrap_bind_symbol_libc (socket); - - return swrap.libc.symbols._libc_socket.f (domain, type, protocol); -} - -int -libc_socketpair (int domain, int type, int protocol, int sv[2]) -{ - swrap_bind_symbol_libc (socketpair); - - return swrap.libc.symbols._libc_socketpair.f (domain, type, protocol, sv); -} - -ssize_t -libc_write (int fd, const void *buf, size_t count) -{ - swrap_bind_symbol_libc (write); - - return swrap.libc.symbols._libc_write.f (fd, buf, count); -} - -ssize_t -libc_writev (int fd, const struct iovec * iov, int iovcnt) -{ - swrap_bind_symbol_libc (writev); - - return swrap.libc.symbols._libc_writev.f (fd, iov, iovcnt); -} - -int -libc_shutdown (int fd, int how) -{ - swrap_bind_symbol_libc (shutdown); - - return swrap.libc.symbols._libc_shutdown.f (fd, how); -} - -int -libc_select (int __nfds, fd_set * __restrict __readfds, - fd_set * __restrict __writefds, - fd_set * __restrict __exceptfds, - struct timeval *__restrict __timeout) -{ - swrap_bind_symbol_libc (select); - - return swrap.libc.symbols._libc_select.f (__nfds, __readfds, - __writefds, - __exceptfds, __timeout); -} - -#ifdef __USE_XOPEN2K -int -libc_pselect (int __nfds, fd_set * __restrict __readfds, - fd_set * __restrict __writefds, - fd_set * __restrict __exceptfds, - const struct timespec *__restrict __timeout, - const __sigset_t * __restrict __sigmask) -{ - swrap_bind_symbol_libc (pselect); - - return swrap.libc.symbols._libc_pselect.f (__nfds, __readfds, - __writefds, - __exceptfds, - __timeout, __sigmask); -} -#endif - -int -libc_epoll_create (int __size) -{ - swrap_bind_symbol_libc (epoll_create); - - return swrap.libc.symbols._libc_epoll_create.f (__size); -} - -int -libc_epoll_create1 (int __flags) -{ - swrap_bind_symbol_libc (epoll_create1); - - return swrap.libc.symbols._libc_epoll_create1.f (__flags); -} - -int -libc_epoll_ctl (int __epfd, int __op, int __fd, struct epoll_event *__event) -{ - swrap_bind_symbol_libc (epoll_ctl); - - return swrap.libc.symbols._libc_epoll_ctl.f (__epfd, __op, __fd, __event); -} - -int -libc_epoll_wait (int __epfd, struct epoll_event *__events, - int __maxevents, int __timeout) -{ - swrap_bind_symbol_libc (epoll_wait); - - return swrap.libc.symbols._libc_epoll_wait.f (__epfd, __events, - __maxevents, __timeout); -} - -int -libc_epoll_pwait (int __epfd, struct epoll_event *__events, - int __maxevents, int __timeout, const __sigset_t * __ss) -{ - swrap_bind_symbol_libc (epoll_pwait); - - return swrap.libc.symbols._libc_epoll_pwait.f (__epfd, __events, - __maxevents, __timeout, - __ss); -} - -int -libc_poll (struct pollfd *__fds, nfds_t __nfds, int __timeout) -{ - swrap_bind_symbol_libc (poll); - - return swrap.libc.symbols._libc_poll.f (__fds, __nfds, __timeout); -} - -#ifdef __USE_GNU -int -libc_ppoll (struct pollfd *__fds, nfds_t __nfds, - const struct timespec *__timeout, const __sigset_t * __ss) -{ - swrap_bind_symbol_libc (ppoll); - - return swrap.libc.symbols._libc_ppoll.f (__fds, __nfds, __timeout, __ss); -} -#endif - -static void -swrap_thread_prepare (void) -{ - SWRAP_LOCK_ALL; -} - -static void -swrap_thread_parent (void) -{ - SWRAP_UNLOCK_ALL; -} - -static void -swrap_thread_child (void) -{ - SWRAP_UNLOCK_ALL; -} - -/**************************** - * CONSTRUCTOR - ***************************/ -void -swrap_constructor (void) -{ - /* - * If we hold a lock and the application forks, then the child - * is not able to unlock the mutex and we are in a deadlock. - * This should prevent such deadlocks. - */ - pthread_atfork (&swrap_thread_prepare, - &swrap_thread_parent, &swrap_thread_child); -} - -/**************************** - * DESTRUCTOR - ***************************/ - -/* - * This function is called when the library is unloaded and makes sure that - * sockets get closed and the unix file for the socket are unlinked. - */ -void -swrap_destructor (void) -{ - if (swrap.libc.handle != NULL) - { - dlclose (swrap.libc.handle); - } - if (swrap.libc.socket_handle) - { - dlclose (swrap.libc.socket_handle); - } -} - -/* - * fd.io coding-style-patch-verification: ON - * - * Local Variables: - * eval: (c-set-style "gnu") - * End: - */ diff --git a/extras/vcl-ldpreload/src/libvcl-ldpreload/vcom_socket_wrapper.h b/extras/vcl-ldpreload/src/libvcl-ldpreload/vcom_socket_wrapper.h deleted file mode 100644 index 9e85ecf2b6c..00000000000 --- a/extras/vcl-ldpreload/src/libvcl-ldpreload/vcom_socket_wrapper.h +++ /dev/null @@ -1,235 +0,0 @@ -/* - * Copyright (c) 2017 Cisco and/or its affiliates. - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at: - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -/* - * Copyright (c) 2005-2008 Jelmer Vernooij <jelmer@samba.org> - * Copyright (C) 2006-2014 Stefan Metzmacher <metze@samba.org> - * Copyright (C) 2013-2014 Andreas Schneider <asn@samba.org> - * - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * - * 3. Neither the name of the author nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - * - */ - -/* - Socket wrapper library. Passes all socket communication over - unix domain sockets if the environment variable SOCKET_WRAPPER_DIR - is set. -*/ - -#ifndef included_vcom_socket_wrapper_h -#define included_vcom_socket_wrapper_h - -#include <sys/types.h> -#include <sys/socket.h> -#include <sys/ioctl.h> -#include <sys/select.h> -#include <sys/epoll.h> -#include <poll.h> -#include <sys/uio.h> -#include <stdlib.h> - - -/* GCC have printf type attribute check. */ -#ifdef HAVE_FUNCTION_ATTRIBUTE_FORMAT -#define PRINTF_ATTRIBUTE(a,b) __attribute__ ((__format__ (__printf__, a, b))) -#else -#define PRINTF_ATTRIBUTE(a,b) -#endif /* HAVE_FUNCTION_ATTRIBUTE_FORMAT */ - -#define HAVE_CONSTRUCTOR_ATTRIBUTE -#ifdef HAVE_CONSTRUCTOR_ATTRIBUTE -#define CONSTRUCTOR_ATTRIBUTE __attribute__ ((constructor)) -#else -#define CONSTRUCTOR_ATTRIBUTE -#endif /* HAVE_CONSTRUCTOR_ATTRIBUTE */ - -#define HAVE_DESTRUCTOR_ATTRIBUTE -#ifdef HAVE_DESTRUCTOR_ATTRIBUTE -#define DESTRUCTOR_ATTRIBUTE __attribute__ ((destructor)) -#else -#define DESTRUCTOR_ATTRIBUTE -#endif - -#define HAVE_ADDRESS_SANITIZER_ATTRIBUTE -#ifdef HAVE_ADDRESS_SANITIZER_ATTRIBUTE -#define DO_NOT_SANITIZE_ADDRESS_ATTRIBUTE __attribute__((no_sanitize_address)) -#else -#define DO_NOT_SANITIZE_ADDRESS_ATTRIBUTE -#endif - -/* - * IMPORTANT - * - * Functions especially from libc need to be loaded individually, you can't load - * all at once or gdb will segfault at startup. The same applies to valgrind and - * has probably something todo with with the linker. - * So we need load each function at the point it is called the first time. - */ -#ifdef HAVE_ACCEPT4 -int -libc_accept4 (int sockfd, - struct sockaddr *addr, socklen_t * addrlen, int flags); -#else /* HAVE_ACCEPT4 */ -int libc_accept (int sockfd, struct sockaddr *addr, socklen_t * addrlen); -#endif /* HAVE_ACCEPT4 */ - -int libc_bind (int sockfd, const struct sockaddr *addr, socklen_t addrlen); - -int libc_close (int fd); - -int libc_connect (int sockfd, const struct sockaddr *addr, socklen_t addrlen); - -#if 0 -/* TBD: dup and dup2 to be implemented later */ -int libc_dup (int fd); - -int libc_dup2 (int oldfd, int newfd); -#endif - -#ifdef HAVE_EVENTFD -int libc_eventfd (int count, int flags); -#endif - -DO_NOT_SANITIZE_ADDRESS_ATTRIBUTE int -libc_vfcntl (int fd, int cmd, va_list ap); - -DO_NOT_SANITIZE_ADDRESS_ATTRIBUTE int -libc_vioctl (int fd, int cmd, va_list ap); - -int libc_getpeername (int sockfd, struct sockaddr *addr, socklen_t * addrlen); - -int libc_getsockname (int sockfd, struct sockaddr *addr, socklen_t * addrlen); - -int -libc_getsockopt (int sockfd, - int level, int optname, void *optval, socklen_t * optlen); - -int libc_listen (int sockfd, int backlog); - -int libc_read (int fd, void *buf, size_t count); - -ssize_t libc_readv (int fd, const struct iovec *iov, int iovcnt); - -int libc_recv (int sockfd, void *buf, size_t len, int flags); - -int -libc_recvfrom (int sockfd, - void *buf, - size_t len, - int flags, struct sockaddr *src_addr, socklen_t * addrlen); - -int libc_recvmsg (int sockfd, struct msghdr *msg, int flags); - -int libc_send (int sockfd, const void *buf, size_t len, int flags); - -int libc_sendmsg (int sockfd, const struct msghdr *msg, int flags); - -int -libc_sendto (int sockfd, - const void *buf, - size_t len, - int flags, const struct sockaddr *dst_addr, socklen_t addrlen); - -int -libc_setsockopt (int sockfd, - int level, int optname, const void *optval, - socklen_t optlen); - -int libc_socket (int domain, int type, int protocol); - -int libc_socketpair (int domain, int type, int protocol, int sv[2]); - -ssize_t libc_write (int fd, const void *buf, size_t count); - -ssize_t libc_writev (int fd, const struct iovec *iov, int iovcnt); - -int libc_shutdown (int fd, int how); - -int -libc_select (int __nfds, fd_set * __restrict __readfds, - fd_set * __restrict __writefds, - fd_set * __restrict __exceptfds, - struct timeval *__restrict __timeout); - -#ifdef __USE_XOPEN2K -int -libc_pselect (int __nfds, fd_set * __restrict __readfds, - fd_set * __restrict __writefds, - fd_set * __restrict __exceptfds, - const struct timespec *__restrict __timeout, - const __sigset_t * __restrict __sigmask); -#endif - -int libc_epoll_create (int __size); - -int libc_epoll_create1 (int __flags); - -int libc_epoll_ctl (int __epfd, int __op, int __fd, - struct epoll_event *__event); - -int libc_epoll_wait (int __epfd, struct epoll_event *__events, - int __maxevents, int __timeout); - -int libc_epoll_pwait (int __epfd, struct epoll_event *__events, - int __maxevents, int __timeout, - const __sigset_t * __ss); - -int libc_poll (struct pollfd *__fds, nfds_t __nfds, int __timeout); - -#ifdef __USE_GNU -int libc_ppoll (struct pollfd *__fds, nfds_t __nfds, - const struct timespec *__timeout, const __sigset_t * __ss); -#endif - -void swrap_constructor (void); - -void swrap_destructor (void); - -#endif /* included_vcom_socket_wrapper_h */ - -/* - * fd.io coding-style-patch-verification: ON - * - * Local Variables: - * eval: (c-set-style "gnu") - * End: - */ |