Mercurial > hg > nginx-quic
view src/os/unix/ngx_files.h @ 5915:ac3f78219f85
Moved the code for coalescing file buffers to a separate function.
author | Valentin Bartenev <vbart@nginx.com> |
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date | Wed, 13 Aug 2014 15:11:45 +0400 |
parents | f1dfe7ff4511 |
children | ccad84a174e0 |
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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_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) 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 #endif /* _NGX_FILES_H_INCLUDED_ */