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/*
* Copyright (C) Igor Sysoev
* Copyright (C) Nginx, Inc.
*/
#ifndef _NGX_FILES_H_INCLUDED_
#define _NGX_FILES_H_INCLUDED_
#include <ngx_config.h>
#include <ngx_core.h>
typedef int ngx_fd_t;
typedef struct stat ngx_file_info_t;
typedef ino_t ngx_file_uniq_t;
typedef struct {
u_char *name;
size_t size;
void *addr;
ngx_fd_t fd;
ngx_log_t *log;
} ngx_file_mapping_t;
typedef struct {
DIR *dir;
struct dirent *de;
struct stat info;
unsigned type:8;
unsigned valid_info:1;
} ngx_dir_t;
typedef struct {
size_t n;
glob_t pglob;
u_char *pattern;
ngx_log_t *log;
ngx_uint_t test;
} ngx_glob_t;
#define NGX_INVALID_FILE -1
#define NGX_FILE_ERROR -1
#ifdef __CYGWIN__
#ifndef NGX_HAVE_CASELESS_FILESYSTEM
#define NGX_HAVE_CASELESS_FILESYSTEM 1
#endif
#define ngx_open_file(name, mode, create, access) \
open((const char *) name, mode|create|O_BINARY, access)
#else
#define ngx_open_file(name, mode, create, access) \
open((const char *) name, mode|create, access)
#endif
#define ngx_open_file_n "open()"
#define NGX_FILE_RDONLY O_RDONLY
#define NGX_FILE_WRONLY O_WRONLY
#define NGX_FILE_RDWR O_RDWR
#define NGX_FILE_CREATE_OR_OPEN O_CREAT
#define NGX_FILE_OPEN 0
#define NGX_FILE_TRUNCATE (O_CREAT|O_TRUNC)
#define NGX_FILE_APPEND (O_WRONLY|O_APPEND)
#define NGX_FILE_NONBLOCK O_NONBLOCK
#if (NGX_HAVE_OPENAT)
#define NGX_FILE_NOFOLLOW O_NOFOLLOW
#if defined(O_DIRECTORY)
#define NGX_FILE_DIRECTORY O_DIRECTORY
#else
#define NGX_FILE_DIRECTORY 0
#endif
#if defined(O_SEARCH)
#define NGX_FILE_SEARCH (O_SEARCH|NGX_FILE_DIRECTORY)
#elif defined(O_EXEC)
#define NGX_FILE_SEARCH (O_EXEC|NGX_FILE_DIRECTORY)
#elif (NGX_HAVE_O_PATH)
#define NGX_FILE_SEARCH (O_PATH|O_RDONLY|NGX_FILE_DIRECTORY)
#else
#define NGX_FILE_SEARCH (O_RDONLY|NGX_FILE_DIRECTORY)
#endif
#endif /* NGX_HAVE_OPENAT */
#define NGX_FILE_DEFAULT_ACCESS 0644
#define NGX_FILE_OWNER_ACCESS 0600
#define ngx_close_file close
#define ngx_close_file_n "close()"
#define ngx_delete_file(name) unlink((const char *) name)
#define ngx_delete_file_n "unlink()"
ngx_fd_t ngx_open_tempfile(u_char *name, ngx_uint_t persistent,
ngx_uint_t access);
#define ngx_open_tempfile_n "open()"
ssize_t ngx_read_file(ngx_file_t *file, u_char *buf, size_t size, off_t offset);
#if (NGX_HAVE_PREAD)
#define ngx_read_file_n "pread()"
#else
#define ngx_read_file_n "read()"
#endif
ssize_t ngx_write_file(ngx_file_t *file, u_char *buf, size_t size,
off_t offset);
ssize_t ngx_write_chain_to_file(ngx_file_t *file, ngx_chain_t *ce,
off_t offset, ngx_pool_t *pool);
#define ngx_read_fd read
#define ngx_read_fd_n "read()"
/*
* we use inlined function instead of simple #define
* because glibc 2.3 sets warn_unused_result attribute for write()
* and in this case gcc 4.3 ignores (void) cast
*/
static ngx_inline ssize_t
ngx_write_fd(ngx_fd_t fd, void *buf, size_t n)
{
return write(fd, buf, n);
}
#define ngx_write_fd_n "write()"
#define ngx_write_console ngx_write_fd
#define ngx_linefeed(p) *p++ = LF;
#define NGX_LINEFEED_SIZE 1
#define NGX_LINEFEED "\x0a"
#define ngx_rename_file(o, n) rename((const char *) o, (const char *) n)
#define ngx_rename_file_n "rename()"
#define ngx_change_file_access(n, a) chmod((const char *) n, a)
#define ngx_change_file_access_n "chmod()"
ngx_int_t ngx_set_file_time(u_char *name, ngx_fd_t fd, time_t s);
#define ngx_set_file_time_n "utimes()"
#define ngx_file_info(file, sb) stat((const char *) file, sb)
#define ngx_file_info_n "stat()"
#define ngx_fd_info(fd, sb) fstat(fd, sb)
#define ngx_fd_info_n "fstat()"
#define ngx_link_info(file, sb) lstat((const char *) file, sb)
#define ngx_link_info_n "lstat()"
#define ngx_is_dir(sb) (S_ISDIR((sb)->st_mode))
#define ngx_is_file(sb) (S_ISREG((sb)->st_mode))
#define ngx_is_link(sb) (S_ISLNK((sb)->st_mode))
#define ngx_is_exec(sb) (((sb)->st_mode & S_IXUSR) == S_IXUSR)
#define ngx_file_access(sb) ((sb)->st_mode & 0777)
#define ngx_file_size(sb) (sb)->st_size
#define ngx_file_fs_size(sb) ngx_max((sb)->st_size, (sb)->st_blocks * 512)
#define ngx_file_mtime(sb) (sb)->st_mtime
#define ngx_file_uniq(sb) (sb)->st_ino
ngx_int_t ngx_create_file_mapping(ngx_file_mapping_t *fm);
void ngx_close_file_mapping(ngx_file_mapping_t *fm);
#define ngx_realpath(p, r) (u_char *) realpath((char *) p, (char *) r)
#define ngx_realpath_n "realpath()"
#define ngx_getcwd(buf, size) (getcwd((char *) buf, size) != NULL)
#define ngx_getcwd_n "getcwd()"
#define ngx_path_separator(c) ((c) == '/')
#if defined(PATH_MAX)
#define NGX_HAVE_MAX_PATH 1
#define NGX_MAX_PATH PATH_MAX
#else
#define NGX_MAX_PATH 4096
#endif
#define NGX_DIR_MASK_LEN 0
ngx_int_t ngx_open_dir(ngx_str_t *name, ngx_dir_t *dir);
#define ngx_open_dir_n "opendir()"
#define ngx_close_dir(d) closedir((d)->dir)
#define ngx_close_dir_n "closedir()"
ngx_int_t ngx_read_dir(ngx_dir_t *dir);
#define ngx_read_dir_n "readdir()"
#define ngx_create_dir(name, access) mkdir((const char *) name, access)
#define ngx_create_dir_n "mkdir()"
#define ngx_delete_dir(name) rmdir((const char *) name)
#define ngx_delete_dir_n "rmdir()"
#define ngx_dir_access(a) (a | (a & 0444) >> 2)
#define ngx_de_name(dir) ((u_char *) (dir)->de->d_name)
#if (NGX_HAVE_D_NAMLEN)
#define ngx_de_namelen(dir) (dir)->de->d_namlen
#else
#define ngx_de_namelen(dir) ngx_strlen((dir)->de->d_name)
#endif
static ngx_inline ngx_int_t
ngx_de_info(u_char *name, ngx_dir_t *dir)
{
dir->type = 0;
return stat((const char *) name, &dir->info);
}
#define ngx_de_info_n "stat()"
#define ngx_de_link_info(name, dir) lstat((const char *) name, &(dir)->info)
#define ngx_de_link_info_n "lstat()"
#if (NGX_HAVE_D_TYPE)
/*
* some file systems (e.g. XFS on Linux and CD9660 on FreeBSD)
* do not set dirent.d_type
*/
#define ngx_de_is_dir(dir) \
(((dir)->type) ? ((dir)->type == DT_DIR) : (S_ISDIR((dir)->info.st_mode)))
#define ngx_de_is_file(dir) \
(((dir)->type) ? ((dir)->type == DT_REG) : (S_ISREG((dir)->info.st_mode)))
#define ngx_de_is_link(dir) \
(((dir)->type) ? ((dir)->type == DT_LNK) : (S_ISLNK((dir)->info.st_mode)))
#else
#define ngx_de_is_dir(dir) (S_ISDIR((dir)->info.st_mode))
#define ngx_de_is_file(dir) (S_ISREG((dir)->info.st_mode))
#define ngx_de_is_link(dir) (S_ISLNK((dir)->info.st_mode))
#endif
#define ngx_de_access(dir) (((dir)->info.st_mode) & 0777)
#define ngx_de_size(dir) (dir)->info.st_size
#define ngx_de_fs_size(dir) \
ngx_max((dir)->info.st_size, (dir)->info.st_blocks * 512)
#define ngx_de_mtime(dir) (dir)->info.st_mtime
ngx_int_t ngx_open_glob(ngx_glob_t *gl);
#define ngx_open_glob_n "glob()"
ngx_int_t ngx_read_glob(ngx_glob_t *gl, ngx_str_t *name);
void ngx_close_glob(ngx_glob_t *gl);
ngx_err_t ngx_trylock_fd(ngx_fd_t fd);
ngx_err_t ngx_lock_fd(ngx_fd_t fd);
ngx_err_t ngx_unlock_fd(ngx_fd_t fd);
#define ngx_trylock_fd_n "fcntl(F_SETLK, F_WRLCK)"
#define ngx_lock_fd_n "fcntl(F_SETLKW, F_WRLCK)"
#define ngx_unlock_fd_n "fcntl(F_SETLK, F_UNLCK)"
#if (NGX_HAVE_F_READAHEAD)
#define NGX_HAVE_READ_AHEAD 1
#define ngx_read_ahead(fd, n) fcntl(fd, F_READAHEAD, (int) n)
#define ngx_read_ahead_n "fcntl(fd, F_READAHEAD)"
#elif (NGX_HAVE_POSIX_FADVISE)
#define NGX_HAVE_READ_AHEAD 1
ngx_int_t ngx_read_ahead(ngx_fd_t fd, size_t n);
#define ngx_read_ahead_n "posix_fadvise(POSIX_FADV_SEQUENTIAL)"
#else
#define ngx_read_ahead(fd, n) 0
#define ngx_read_ahead_n "ngx_read_ahead_n"
#endif
#if (NGX_HAVE_O_DIRECT)
ngx_int_t ngx_directio_on(ngx_fd_t fd);
#define ngx_directio_on_n "fcntl(O_DIRECT)"
ngx_int_t ngx_directio_off(ngx_fd_t fd);
#define ngx_directio_off_n "fcntl(!O_DIRECT)"
#elif (NGX_HAVE_F_NOCACHE)
#define ngx_directio_on(fd) fcntl(fd, F_NOCACHE, 1)
#define ngx_directio_on_n "fcntl(F_NOCACHE, 1)"
#elif (NGX_HAVE_DIRECTIO)
#define ngx_directio_on(fd) directio(fd, DIRECTIO_ON)
#define ngx_directio_on_n "directio(DIRECTIO_ON)"
#else
#define ngx_directio_on(fd) 0
#define ngx_directio_on_n "ngx_directio_on_n"
#endif
size_t ngx_fs_bsize(u_char *name);
#if (NGX_HAVE_OPENAT)
#define ngx_openat_file(fd, name, mode, create, access) \
openat(fd, (const char *) name, mode|create, access)
#define ngx_openat_file_n "openat()"
#define ngx_file_at_info(fd, name, sb, flag) \
fstatat(fd, (const char *) name, sb, flag)
#define ngx_file_at_info_n "fstatat()"
#define NGX_AT_FDCWD (ngx_fd_t) AT_FDCWD
#endif
#define ngx_stdout STDOUT_FILENO
#define ngx_stderr STDERR_FILENO
#define ngx_set_stderr(fd) dup2(fd, STDERR_FILENO)
#define ngx_set_stderr_n "dup2(STDERR_FILENO)"
#if (NGX_HAVE_FILE_AIO)
ngx_int_t ngx_file_aio_init(ngx_file_t *file, ngx_pool_t *pool);
ssize_t ngx_file_aio_read(ngx_file_t *file, u_char *buf, size_t size,
off_t offset, ngx_pool_t *pool);
extern ngx_uint_t ngx_file_aio;
#endif
#if (NGX_THREADS)
ssize_t ngx_thread_read(ngx_file_t *file, u_char *buf, size_t size,
off_t offset, ngx_pool_t *pool);
ssize_t ngx_thread_write_chain_to_file(ngx_file_t *file, ngx_chain_t *cl,
off_t offset, ngx_pool_t *pool);
#endif
#endif /* _NGX_FILES_H_INCLUDED_ */
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