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-rw-r--r--svm/svmtool.c528
1 files changed, 0 insertions, 528 deletions
diff --git a/svm/svmtool.c b/svm/svmtool.c
deleted file mode 100644
index b319551425c..00000000000
--- a/svm/svmtool.c
+++ /dev/null
@@ -1,528 +0,0 @@
-/*
- *------------------------------------------------------------------
- * svmtool.c
- *
- * Copyright (c) 2009 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 <stdio.h>
-#include <stdlib.h>
-#include <sys/types.h>
-#include <sys/mman.h>
-#include <sys/stat.h>
-#include <netinet/in.h>
-#include <signal.h>
-#include <pthread.h>
-#include <unistd.h>
-#include <time.h>
-#include <fcntl.h>
-#include <string.h>
-#include <vppinfra/clib.h>
-#include <vppinfra/vec.h>
-#include <vppinfra/hash.h>
-#include <vppinfra/bitmap.h>
-#include <vppinfra/fifo.h>
-#include <vppinfra/time.h>
-#include <vppinfra/mheap.h>
-#include <vppinfra/heap.h>
-#include <vppinfra/pool.h>
-#include <vppinfra/format.h>
-
-#include "svm.h"
-
-
-
-/*
- * format_all_svm_regions
- * Maps / unmaps regions. Do NOT call from client code!
- */
-u8 *
-format_all_svm_regions (u8 * s, va_list * args)
-{
- int verbose = va_arg (*args, int);
- svm_region_t *root_rp = svm_get_root_rp ();
- svm_main_region_t *mp;
- svm_subregion_t *subp;
- svm_region_t *rp;
- svm_map_region_args_t *a = 0;
- u8 **svm_names = 0;
- u8 *name = 0;
- int i;
-
- ASSERT (root_rp);
-
- pthread_mutex_lock (&root_rp->mutex);
-
- s = format (s, "%U", format_svm_region, root_rp, verbose);
-
- mp = root_rp->data_base;
-
- /*
- * Snapshoot names, can't hold root rp mutex across
- * find_or_create.
- */
- /* *INDENT-OFF* */
- pool_foreach (subp, mp->subregions, ({
- name = vec_dup (subp->subregion_name);
- vec_add1(svm_names, name);
- }));
- /* *INDENT-ON* */
-
- pthread_mutex_unlock (&root_rp->mutex);
-
- for (i = 0; i < vec_len (svm_names); i++)
- {
- vec_validate (a, 0);
- a->name = (char *) svm_names[i];
- rp = svm_region_find_or_create (a);
- if (rp)
- {
- pthread_mutex_lock (&rp->mutex);
- s = format (s, "%U", format_svm_region, rp, verbose);
- pthread_mutex_unlock (&rp->mutex);
- svm_region_unmap (rp);
- vec_free (svm_names[i]);
- }
- vec_free (a);
- }
- vec_free (svm_names);
- return (s);
-}
-
-void
-show (char *chroot_path, int verbose)
-{
- svm_map_region_args_t *a = 0;
-
- vec_validate (a, 0);
-
- svm_region_init_chroot (chroot_path);
-
- fformat (stdout, "My pid is %d\n", getpid ());
-
- fformat (stdout, "%U", format_all_svm_regions, verbose);
-
- svm_region_exit ();
-
- vec_free (a);
-}
-
-
-static void *
-svm_map_region_nolock (svm_map_region_args_t * a)
-{
- int svm_fd;
- svm_region_t *rp;
- int deadman = 0;
- u8 *shm_name;
-
- ASSERT ((a->size & ~(MMAP_PAGESIZE - 1)) == a->size);
-
- shm_name = shm_name_from_svm_map_region_args (a);
-
- svm_fd = shm_open ((char *) shm_name, O_RDWR, 0777);
-
- if (svm_fd < 0)
- {
- perror ("svm_region_map(mmap open)");
- return (0);
- }
- vec_free (shm_name);
-
- rp = mmap (0, MMAP_PAGESIZE, PROT_READ | PROT_WRITE, MAP_SHARED, svm_fd, 0);
-
- if (rp == (svm_region_t *) MAP_FAILED)
- {
- close (svm_fd);
- clib_warning ("mmap");
- return (0);
- }
- /*
- * We lost the footrace to create this region; make sure
- * the winner has crossed the finish line.
- */
- while (rp->version == 0 && deadman++ < 5)
- {
- sleep (1);
- }
-
- /*
- * <bleep>-ed?
- */
- if (rp->version == 0)
- {
- clib_warning ("rp->version %d not %d", rp->version, SVM_VERSION);
- munmap (rp, MMAP_PAGESIZE);
- return (0);
- }
- /* Remap now that the region has been placed */
- a->baseva = rp->virtual_base;
- a->size = rp->virtual_size;
- munmap (rp, MMAP_PAGESIZE);
-
- rp = (void *) mmap ((void *) a->baseva, a->size,
- PROT_READ | PROT_WRITE,
- MAP_SHARED | MAP_FIXED, svm_fd, 0);
- if ((uword) rp == (uword) MAP_FAILED)
- {
- clib_unix_warning ("mmap");
- return (0);
- }
-
- if ((uword) rp != rp->virtual_base)
- {
- clib_warning ("mmap botch");
- }
-
- if (pthread_mutex_trylock (&rp->mutex))
- {
- clib_warning ("rp->mutex LOCKED by pid %d, tag %d, cleared...",
- rp->mutex_owner_pid, rp->mutex_owner_tag);
- memset (&rp->mutex, 0, sizeof (rp->mutex));
-
- }
- else
- {
- clib_warning ("mutex OK...\n");
- pthread_mutex_unlock (&rp->mutex);
- }
-
- return ((void *) rp);
-}
-
-/*
- * rnd_pagesize
- * Round to a pagesize multiple, presumably 4k works
- */
-static u64
-rnd_pagesize (u64 size)
-{
- u64 rv;
-
- rv = (size + (MMAP_PAGESIZE - 1)) & ~(MMAP_PAGESIZE - 1);
- return (rv);
-}
-
-#define MUTEX_DEBUG
-
-always_inline void
-region_lock (svm_region_t * rp, int tag)
-{
- pthread_mutex_lock (&rp->mutex);
-#ifdef MUTEX_DEBUG
- rp->mutex_owner_pid = getpid ();
- rp->mutex_owner_tag = tag;
-#endif
-}
-
-always_inline void
-region_unlock (svm_region_t * rp)
-{
-#ifdef MUTEX_DEBUG
- rp->mutex_owner_pid = 0;
- rp->mutex_owner_tag = 0;
-#endif
- pthread_mutex_unlock (&rp->mutex);
-}
-
-
-static void *
-svm_existing_region_map_nolock (void *root_arg, svm_map_region_args_t * a)
-{
- svm_region_t *root_rp = root_arg;
- svm_main_region_t *mp;
- svm_region_t *rp;
- void *oldheap;
- uword *p;
-
- a->size += MMAP_PAGESIZE +
- (a->pvt_heap_size ? a->pvt_heap_size : SVM_PVT_MHEAP_SIZE);
- a->size = rnd_pagesize (a->size);
-
- region_lock (root_rp, 4);
- oldheap = svm_push_pvt_heap (root_rp);
- mp = root_rp->data_base;
-
- ASSERT (mp);
-
- p = hash_get_mem (mp->name_hash, a->name);
-
- if (p)
- {
- rp = svm_map_region_nolock (a);
- region_unlock (root_rp);
- svm_pop_heap (oldheap);
- return rp;
- }
- return 0;
-
-}
-
-static void
-trace (char *chroot_path, char *name, int enable_disable)
-{
- svm_map_region_args_t *a = 0;
- svm_region_t *db_rp;
- void *oldheap;
-
- vec_validate (a, 0);
-
- svm_region_init_chroot (chroot_path);
-
- a->name = name;
- a->size = 1 << 20;
- a->flags = SVM_FLAGS_MHEAP;
-
- db_rp = svm_region_find_or_create (a);
-
- ASSERT (db_rp);
-
- region_lock (db_rp, 20);
-
- oldheap = svm_push_data_heap (db_rp);
-
- mheap_trace (db_rp->data_heap, enable_disable);
-
- svm_pop_heap (oldheap);
- region_unlock (db_rp);
-
- svm_region_unmap ((void *) db_rp);
- svm_region_exit ();
- vec_free (a);
-}
-
-
-
-static void
-subregion_repair (char *chroot_path)
-{
- int i;
- svm_main_region_t *mp;
- svm_map_region_args_t a;
- svm_region_t *root_rp;
- svm_region_t *rp;
- svm_subregion_t *subp;
- u8 *name = 0;
- u8 **svm_names = 0;
-
- svm_region_init_chroot (chroot_path);
- root_rp = svm_get_root_rp ();
-
- pthread_mutex_lock (&root_rp->mutex);
-
- mp = root_rp->data_base;
-
- /*
- * Snapshoot names, can't hold root rp mutex across
- * find_or_create.
- */
- /* *INDENT-OFF* */
- pool_foreach (subp, mp->subregions, ({
- name = vec_dup (subp->subregion_name);
- vec_add1(svm_names, name);
- }));
- /* *INDENT-ON* */
-
- pthread_mutex_unlock (&root_rp->mutex);
-
- for (i = 0; i < vec_len (svm_names); i++)
- {
- memset (&a, 0, sizeof (a));
- a.root_path = chroot_path;
- a.name = (char *) svm_names[i];
- fformat (stdout, "Checking %s region...\n", a.name);
- rp = svm_existing_region_map_nolock (root_rp, &a);
- if (rp)
- {
- svm_region_unmap (rp);
- vec_free (svm_names[i]);
- }
- }
- vec_free (svm_names);
-}
-
-void
-repair (char *chroot_path, int crash_root_region)
-{
- svm_region_t *root_rp = 0;
- svm_map_region_args_t *a = 0;
- void *svm_map_region (svm_map_region_args_t * a);
- int svm_fd;
- u8 *shm_name;
-
- fformat (stdout, "our pid: %d\n", getpid ());
-
- vec_validate (a, 0);
-
- a->root_path = chroot_path;
- a->name = SVM_GLOBAL_REGION_NAME;
- a->baseva = SVM_GLOBAL_REGION_BASEVA;
- a->size = SVM_GLOBAL_REGION_SIZE;
- a->flags = SVM_FLAGS_NODATA;
-
- shm_name = shm_name_from_svm_map_region_args (a);
-
- svm_fd = shm_open ((char *) shm_name, O_RDWR, 0777);
-
- if (svm_fd < 0)
- {
- perror ("svm_region_map(mmap open)");
- goto out;
- }
-
- vec_free (shm_name);
-
- root_rp = mmap (0, MMAP_PAGESIZE,
- PROT_READ | PROT_WRITE, MAP_SHARED, svm_fd, 0);
-
- if (root_rp == (svm_region_t *) MAP_FAILED)
- {
- close (svm_fd);
- clib_warning ("mmap");
- goto out;
- }
-
- /* Remap now that the region has been placed */
- clib_warning ("remap to 0x%x", root_rp->virtual_base);
-
- a->baseva = root_rp->virtual_base;
- a->size = root_rp->virtual_size;
- munmap (root_rp, MMAP_PAGESIZE);
-
- root_rp = (void *) mmap ((void *) a->baseva, a->size,
- PROT_READ | PROT_WRITE,
- MAP_SHARED | MAP_FIXED, svm_fd, 0);
- if ((uword) root_rp == (uword) MAP_FAILED)
- {
- clib_unix_warning ("mmap");
- goto out;
- }
-
- close (svm_fd);
-
- if ((uword) root_rp != root_rp->virtual_base)
- {
- clib_warning ("mmap botch");
- goto out;
- }
-
- if (pthread_mutex_trylock (&root_rp->mutex))
- {
- clib_warning ("root_rp->mutex LOCKED by pid %d, tag %d, cleared...",
- root_rp->mutex_owner_pid, root_rp->mutex_owner_tag);
- memset (&root_rp->mutex, 0, sizeof (root_rp->mutex));
- goto out;
- }
- else
- {
- clib_warning ("root_rp->mutex OK...\n");
- pthread_mutex_unlock (&root_rp->mutex);
- }
-
-out:
- vec_free (a);
- /*
- * Now that the root region is known to be OK,
- * fix broken subregions
- */
- subregion_repair (chroot_path);
-
- if (crash_root_region)
- {
- clib_warning ("Leaving root region locked on purpose...");
- pthread_mutex_lock (&root_rp->mutex);
- root_rp->mutex_owner_pid = getpid ();
- root_rp->mutex_owner_tag = 99;
- }
- svm_region_exit ();
-}
-
-int
-main (int argc, char **argv)
-{
- unformat_input_t input;
- int parsed = 0;
- char *name;
- char *chroot_path = 0;
- u8 *chroot_u8;
-
- unformat_init_command_line (&input, argv);
-
- while (unformat_check_input (&input) != UNFORMAT_END_OF_INPUT)
- {
- if (unformat (&input, "show-verbose"))
- {
- show (chroot_path, 1);
- parsed++;
- }
- else if (unformat (&input, "show"))
- {
- show (chroot_path, 0);
- parsed++;
- }
- else if (unformat (&input, "client-scan"))
- {
- svm_client_scan (chroot_path);
- parsed++;
- }
- else if (unformat (&input, "repair"))
- {
- repair (chroot_path, 0 /* fix it */ );
- parsed++;
- }
- else if (unformat (&input, "crash"))
- {
- repair (chroot_path, 1 /* crash it */ );
- parsed++;
- }
- else if (unformat (&input, "trace-on %s", &name))
- {
- trace (chroot_path, name, 1);
- parsed++;
- }
- else if (unformat (&input, "trace-off %s", &name))
- {
- trace (chroot_path, name, 0);
- parsed++;
- }
- else if (unformat (&input, "chroot %s", &chroot_u8))
- {
- chroot_path = (char *) chroot_u8;
- }
- else
- {
- break;
- }
- }
-
- unformat_free (&input);
-
- if (!parsed)
- {
- fformat (stdout,
- "%s: show | show-verbose | client-scan | trace-on <region-name>\n",
- argv[0]);
- fformat (stdout, " trace-off <region-name>\n");
- }
- exit (0);
-}
-
-/*
- * fd.io coding-style-patch-verification: ON
- *
- * Local Variables:
- * eval: (c-set-style "gnu")
- * End:
- */