3 * Copyright (C) Igor Sysoev
7 #ifndef _NGX_FILES_H_INCLUDED_
8 #define _NGX_FILES_H_INCLUDED_
11 #include <ngx_config.h>
16 typedef struct stat ngx_file_info_t;
17 typedef ino_t ngx_file_uniq_t;
26 unsigned valid_info:1;
27 unsigned valid_type:1;
40 #define NGX_INVALID_FILE -1
41 #define NGX_FILE_ERROR -1
47 #define NGX_HAVE_CASELESS_FILESYSTEM 1
49 #define ngx_open_file(name, mode, create, access) \
50 open((const char *) name, mode|create|O_BINARY, access)
54 #define ngx_open_file(name, mode, create, access) \
55 open((const char *) name, mode|create, access)
59 #define ngx_open_file_n "open()"
61 #define NGX_FILE_RDONLY O_RDONLY
62 #define NGX_FILE_WRONLY O_WRONLY
63 #define NGX_FILE_RDWR O_RDWR
64 #define NGX_FILE_CREATE_OR_OPEN O_CREAT
65 #define NGX_FILE_OPEN 0
66 #define NGX_FILE_TRUNCATE O_TRUNC
67 #define NGX_FILE_APPEND O_APPEND
69 #define NGX_FILE_DEFAULT_ACCESS 0644
72 #define ngx_close_file close
73 #define ngx_close_file_n "close()"
76 #define ngx_delete_file(name) unlink((const char *) name)
77 #define ngx_delete_file_n "unlink()"
80 ngx_fd_t ngx_open_tempfile(u_char *name, ngx_uint_t persistent,
82 #define ngx_open_tempfile_n "open()"
85 ssize_t ngx_read_file(ngx_file_t *file, u_char *buf, size_t size, off_t offset);
87 #define ngx_read_file_n "pread()"
89 #define ngx_read_file_n "read()"
92 ssize_t ngx_write_file(ngx_file_t *file, u_char *buf, size_t size,
95 ssize_t ngx_write_chain_to_file(ngx_file_t *file, ngx_chain_t *ce,
96 off_t offset, ngx_pool_t *pool);
99 #define ngx_read_fd read
100 #define ngx_read_fd_n "read()"
103 * we use inlined function instead of simple #define
104 * because glibc 2.3 sets warn_unused_result attribute for write()
105 * and in this case gcc 4.3 ignores (void) cast
107 static ngx_inline ssize_t
108 ngx_write_fd(ngx_fd_t fd, void *buf, size_t n)
110 return write(fd, buf, n);
113 #define ngx_write_fd_n "write()"
115 #define ngx_linefeed(p) *p++ = LF;
116 #define NGX_LINEFEED_SIZE 1
119 #define ngx_rename_file(o, n) rename((const char *) o, (const char *) n)
120 #define ngx_rename_file_n "rename()"
123 #define ngx_change_file_access(n, a) chmod((const char *) n, a)
124 #define ngx_change_file_access_n "chmod()"
127 ngx_int_t ngx_set_file_time(u_char *name, ngx_fd_t fd, time_t s);
128 #define ngx_set_file_time_n "utimes()"
131 #define ngx_file_info(file, sb) stat((const char *) file, sb)
132 #define ngx_file_info_n "stat()"
134 #define ngx_fd_info(fd, sb) fstat(fd, sb)
135 #define ngx_fd_info_n "fstat()"
137 #define ngx_is_dir(sb) (S_ISDIR((sb)->st_mode))
138 #define ngx_is_file(sb) (S_ISREG((sb)->st_mode))
139 #define ngx_is_link(sb) (S_ISLNK((sb)->st_mode))
140 #define ngx_is_exec(sb) ((sb)->st_mode & S_IXUSR)
141 #define ngx_file_access(sb) ((sb)->st_mode & 0777)
142 #define ngx_file_size(sb) (sb)->st_size
143 #define ngx_file_mtime(sb) (sb)->st_mtime
144 #define ngx_file_uniq(sb) (sb)->st_ino
147 #if (NGX_HAVE_CASELESS_FILESYSTEM)
149 #define ngx_filename_cmp(s1, s2, n) strncasecmp((char *) s1, (char *) s2, n)
153 #define ngx_filename_cmp ngx_memcmp
158 #define ngx_realpath(p, r) realpath((char *) p, (char *) r)
159 #define ngx_realpath_n "realpath()"
160 #define ngx_getcwd(buf, size) (getcwd(buf, size) != NULL)
161 #define ngx_getcwd_n "getcwd()"
162 #define NGX_MAX_PATH PATH_MAX
164 #define NGX_DIR_MASK_LEN 0
167 ngx_int_t ngx_open_dir(ngx_str_t *name, ngx_dir_t *dir);
168 #define ngx_open_dir_n "opendir()"
171 #define ngx_close_dir(d) closedir((d)->dir)
172 #define ngx_close_dir_n "closedir()"
175 ngx_int_t ngx_read_dir(ngx_dir_t *dir);
176 #define ngx_read_dir_n "readdir()"
179 #define ngx_create_dir(name, access) mkdir((const char *) name, access)
180 #define ngx_create_dir_n "mkdir()"
183 #define ngx_delete_dir(name) rmdir((const char *) name)
184 #define ngx_delete_dir_n "rmdir()"
187 #define ngx_dir_access(a) (a | (a & 0444) >> 2)
190 #define ngx_de_name(dir) ((u_char *) (dir)->de->d_name)
191 #if (NGX_HAVE_D_NAMLEN)
192 #define ngx_de_namelen(dir) (dir)->de->d_namlen
194 #define ngx_de_namelen(dir) ngx_strlen((dir)->de->d_name)
196 #define ngx_de_info(name, dir) stat((const char *) name, &(dir)->info)
197 #define ngx_de_info_n "stat()"
198 #define ngx_de_link_info(name, dir) lstat((const char *) name, &(dir)->info)
199 #define ngx_de_link_info_n "lstat()"
201 #if (NGX_HAVE_D_TYPE)
203 #define ngx_de_is_dir(dir) ((dir)->type == DT_DIR)
204 #define ngx_de_is_file(dir) ((dir)->type == DT_REG)
205 #define ngx_de_is_link(dir) ((dir)->type == DT_LINK)
209 #define ngx_de_is_dir(dir) (S_ISDIR((dir)->info.st_mode))
210 #define ngx_de_is_file(dir) (S_ISREG((dir)->info.st_mode))
211 #define ngx_de_is_link(dir) (S_ISLNK((dir)->info.st_mode))
215 #define ngx_de_access(dir) (((dir)->info.st_mode) & 0777)
216 #define ngx_de_size(dir) (dir)->info.st_size
217 #define ngx_de_mtime(dir) (dir)->info.st_mtime
220 ngx_int_t ngx_open_glob(ngx_glob_t *gl);
221 #define ngx_open_glob_n "glob()"
222 ngx_int_t ngx_read_glob(ngx_glob_t *gl, ngx_str_t *name);
223 void ngx_close_glob(ngx_glob_t *gl);
226 ngx_err_t ngx_trylock_fd(ngx_fd_t fd);
227 ngx_err_t ngx_lock_fd(ngx_fd_t fd);
228 ngx_err_t ngx_unlock_fd(ngx_fd_t fd);
230 #define ngx_trylock_fd_n "fcntl(F_SETLK, F_WRLCK)"
231 #define ngx_lock_fd_n "fcntl(F_SETLKW, F_WRLCK)"
232 #define ngx_unlock_fd_n "fcntl(F_SETLK, F_UNLCK)"
235 #if (NGX_HAVE_O_DIRECT)
237 ngx_int_t ngx_directio_on(ngx_fd_t fd);
238 #define ngx_directio_on_n "fcntl(O_DIRECT)"
240 ngx_int_t ngx_directio_off(ngx_fd_t fd);
241 #define ngx_directio_off_n "fcntl(!O_DIRECT)"
243 #elif (NGX_HAVE_F_NOCACHE)
245 #define ngx_directio_on(fd) fcntl(fd, F_NOCACHE, 1)
246 #define ngx_directio_on_n "fcntl(F_NOCACHE, 1)"
248 #elif (NGX_HAVE_DIRECTIO)
250 #define ngx_directio_on(fd) directio(fd, DIRECTIO_ON)
251 #define ngx_directio_on_n "directio(DIRECTIO_ON)"
255 #define ngx_directio_on(fd) 0
256 #define ngx_directio_on_n "ngx_directio_on_n"
261 #endif /* _NGX_FILES_H_INCLUDED_ */