0
|
1
|
|
2 /*
|
|
3 * Copyright (C) Igor Sysoev
|
660
|
4 * Copyright (C) Nginx, Inc.
|
0
|
5 */
|
|
6
|
|
7
|
|
8 #include <ngx_config.h>
|
|
9 #include <ngx_core.h>
|
|
10
|
|
11
|
542
|
12 #if (NGX_HAVE_FILE_AIO)
|
|
13
|
|
14 ngx_uint_t ngx_file_aio = 1;
|
|
15
|
|
16 #endif
|
|
17
|
|
18
|
110
|
19 ssize_t
|
|
20 ngx_read_file(ngx_file_t *file, u_char *buf, size_t size, off_t offset)
|
0
|
21 {
|
110
|
22 ssize_t n;
|
0
|
23
|
|
24 ngx_log_debug4(NGX_LOG_DEBUG_CORE, file->log, 0,
|
10
|
25 "read: %d, %p, %uz, %O", file->fd, buf, size, offset);
|
0
|
26
|
18
|
27 #if (NGX_HAVE_PREAD)
|
0
|
28
|
|
29 n = pread(file->fd, buf, size, offset);
|
|
30
|
|
31 if (n == -1) {
|
|
32 ngx_log_error(NGX_LOG_CRIT, file->log, ngx_errno,
|
530
|
33 "pread() \"%s\" failed", file->name.data);
|
0
|
34 return NGX_ERROR;
|
|
35 }
|
|
36
|
|
37 #else
|
|
38
|
|
39 if (file->sys_offset != offset) {
|
|
40 if (lseek(file->fd, offset, SEEK_SET) == -1) {
|
530
|
41 ngx_log_error(NGX_LOG_CRIT, file->log, ngx_errno,
|
|
42 "lseek() \"%s\" failed", file->name.data);
|
0
|
43 return NGX_ERROR;
|
|
44 }
|
|
45
|
|
46 file->sys_offset = offset;
|
|
47 }
|
|
48
|
|
49 n = read(file->fd, buf, size);
|
|
50
|
|
51 if (n == -1) {
|
530
|
52 ngx_log_error(NGX_LOG_CRIT, file->log, ngx_errno,
|
|
53 "read() \"%s\" failed", file->name.data);
|
0
|
54 return NGX_ERROR;
|
|
55 }
|
|
56
|
|
57 file->sys_offset += n;
|
|
58
|
|
59 #endif
|
|
60
|
|
61 file->offset += n;
|
|
62
|
|
63 return n;
|
|
64 }
|
|
65
|
|
66
|
110
|
67 ssize_t
|
|
68 ngx_write_file(ngx_file_t *file, u_char *buf, size_t size, off_t offset)
|
0
|
69 {
|
530
|
70 ssize_t n, written;
|
0
|
71
|
10
|
72 ngx_log_debug4(NGX_LOG_DEBUG_CORE, file->log, 0,
|
|
73 "write: %d, %p, %uz, %O", file->fd, buf, size, offset);
|
|
74
|
530
|
75 written = 0;
|
|
76
|
18
|
77 #if (NGX_HAVE_PWRITE)
|
0
|
78
|
530
|
79 for ( ;; ) {
|
582
|
80 n = pwrite(file->fd, buf + written, size, offset);
|
530
|
81
|
|
82 if (n == -1) {
|
|
83 ngx_log_error(NGX_LOG_CRIT, file->log, ngx_errno,
|
|
84 "pwrite() \"%s\" failed", file->name.data);
|
|
85 return NGX_ERROR;
|
|
86 }
|
0
|
87
|
530
|
88 file->offset += n;
|
|
89 written += n;
|
0
|
90
|
530
|
91 if ((size_t) n == size) {
|
|
92 return written;
|
|
93 }
|
|
94
|
|
95 offset += n;
|
|
96 size -= n;
|
0
|
97 }
|
|
98
|
|
99 #else
|
|
100
|
|
101 if (file->sys_offset != offset) {
|
|
102 if (lseek(file->fd, offset, SEEK_SET) == -1) {
|
530
|
103 ngx_log_error(NGX_LOG_CRIT, file->log, ngx_errno,
|
|
104 "lseek() \"%s\" failed", file->name.data);
|
0
|
105 return NGX_ERROR;
|
|
106 }
|
|
107
|
|
108 file->sys_offset = offset;
|
|
109 }
|
|
110
|
530
|
111 for ( ;; ) {
|
582
|
112 n = write(file->fd, buf + written, size);
|
0
|
113
|
530
|
114 if (n == -1) {
|
|
115 ngx_log_error(NGX_LOG_CRIT, file->log, ngx_errno,
|
|
116 "write() \"%s\" failed", file->name.data);
|
|
117 return NGX_ERROR;
|
|
118 }
|
0
|
119
|
530
|
120 file->offset += n;
|
|
121 written += n;
|
0
|
122
|
530
|
123 if ((size_t) n == size) {
|
|
124 return written;
|
|
125 }
|
0
|
126
|
530
|
127 size -= n;
|
|
128 }
|
|
129 #endif
|
0
|
130 }
|
|
131
|
|
132
|
110
|
133 ngx_fd_t
|
276
|
134 ngx_open_tempfile(u_char *name, ngx_uint_t persistent, ngx_uint_t access)
|
0
|
135 {
|
|
136 ngx_fd_t fd;
|
|
137
|
276
|
138 fd = open((const char *) name, O_CREAT|O_EXCL|O_RDWR,
|
|
139 access ? access : 0600);
|
0
|
140
|
|
141 if (fd != -1 && !persistent) {
|
|
142 unlink((const char *) name);
|
|
143 }
|
|
144
|
|
145 return fd;
|
|
146 }
|
|
147
|
|
148
|
10
|
149 #define NGX_IOVS 8
|
|
150
|
110
|
151 ssize_t
|
|
152 ngx_write_chain_to_file(ngx_file_t *file, ngx_chain_t *cl, off_t offset,
|
|
153 ngx_pool_t *pool)
|
0
|
154 {
|
|
155 u_char *prev;
|
|
156 size_t size;
|
646
|
157 ssize_t total, n;
|
10
|
158 ngx_array_t vec;
|
|
159 struct iovec *iov, iovs[NGX_IOVS];
|
0
|
160
|
10
|
161 /* use pwrite() if there is the only buf in a chain */
|
0
|
162
|
|
163 if (cl->next == NULL) {
|
|
164 return ngx_write_file(file, cl->buf->pos,
|
|
165 (size_t) (cl->buf->last - cl->buf->pos),
|
|
166 offset);
|
|
167 }
|
|
168
|
646
|
169 total = 0;
|
|
170
|
10
|
171 vec.elts = iovs;
|
|
172 vec.size = sizeof(struct iovec);
|
126
|
173 vec.nalloc = NGX_IOVS;
|
10
|
174 vec.pool = pool;
|
0
|
175
|
10
|
176 do {
|
|
177 prev = NULL;
|
|
178 iov = NULL;
|
|
179 size = 0;
|
0
|
180
|
10
|
181 vec.nelts = 0;
|
|
182
|
|
183 /* create the iovec and coalesce the neighbouring bufs */
|
0
|
184
|
10
|
185 while (cl && vec.nelts < IOV_MAX) {
|
|
186 if (prev == cl->buf->pos) {
|
|
187 iov->iov_len += cl->buf->last - cl->buf->pos;
|
0
|
188
|
10
|
189 } else {
|
50
|
190 iov = ngx_array_push(&vec);
|
|
191 if (iov == NULL) {
|
10
|
192 return NGX_ERROR;
|
|
193 }
|
|
194
|
|
195 iov->iov_base = (void *) cl->buf->pos;
|
|
196 iov->iov_len = cl->buf->last - cl->buf->pos;
|
|
197 }
|
|
198
|
|
199 size += cl->buf->last - cl->buf->pos;
|
|
200 prev = cl->buf->last;
|
|
201 cl = cl->next;
|
0
|
202 }
|
|
203
|
10
|
204 /* use pwrite() if there is the only iovec buffer */
|
0
|
205
|
10
|
206 if (vec.nelts == 1) {
|
|
207 iov = vec.elts;
|
646
|
208
|
|
209 n = ngx_write_file(file, (u_char *) iov[0].iov_base,
|
|
210 iov[0].iov_len, offset);
|
|
211
|
|
212 if (n == NGX_ERROR) {
|
|
213 return n;
|
|
214 }
|
|
215
|
|
216 return total + n;
|
10
|
217 }
|
0
|
218
|
10
|
219 if (file->sys_offset != offset) {
|
|
220 if (lseek(file->fd, offset, SEEK_SET) == -1) {
|
|
221 ngx_log_error(NGX_LOG_CRIT, file->log, ngx_errno,
|
530
|
222 "lseek() \"%s\" failed", file->name.data);
|
10
|
223 return NGX_ERROR;
|
|
224 }
|
0
|
225
|
10
|
226 file->sys_offset = offset;
|
|
227 }
|
|
228
|
|
229 n = writev(file->fd, vec.elts, vec.nelts);
|
|
230
|
|
231 if (n == -1) {
|
|
232 ngx_log_error(NGX_LOG_CRIT, file->log, ngx_errno,
|
530
|
233 "writev() \"%s\" failed", file->name.data);
|
0
|
234 return NGX_ERROR;
|
|
235 }
|
|
236
|
10
|
237 if ((size_t) n != size) {
|
|
238 ngx_log_error(NGX_LOG_CRIT, file->log, 0,
|
530
|
239 "writev() \"%s\" has written only %z of %uz",
|
|
240 file->name.data, n, size);
|
10
|
241 return NGX_ERROR;
|
|
242 }
|
0
|
243
|
10
|
244 file->sys_offset += n;
|
|
245 file->offset += n;
|
646
|
246 total += n;
|
0
|
247
|
10
|
248 } while (cl);
|
0
|
249
|
646
|
250 return total;
|
0
|
251 }
|
|
252
|
|
253
|
110
|
254 ngx_int_t
|
230
|
255 ngx_set_file_time(u_char *name, ngx_fd_t fd, time_t s)
|
|
256 {
|
|
257 struct timeval tv[2];
|
|
258
|
614
|
259 tv[0].tv_sec = ngx_time();
|
230
|
260 tv[0].tv_usec = 0;
|
|
261 tv[1].tv_sec = s;
|
|
262 tv[1].tv_usec = 0;
|
|
263
|
|
264 if (utimes((char *) name, tv) != -1) {
|
|
265 return NGX_OK;
|
|
266 }
|
|
267
|
|
268 return NGX_ERROR;
|
|
269 }
|
|
270
|
|
271
|
|
272 ngx_int_t
|
582
|
273 ngx_create_file_mapping(ngx_file_mapping_t *fm)
|
|
274 {
|
|
275 fm->fd = ngx_open_file(fm->name, NGX_FILE_RDWR, NGX_FILE_TRUNCATE,
|
|
276 NGX_FILE_DEFAULT_ACCESS);
|
|
277 if (fm->fd == NGX_INVALID_FILE) {
|
|
278 ngx_log_error(NGX_LOG_CRIT, fm->log, ngx_errno,
|
|
279 ngx_open_file_n " \"%s\" failed", fm->name);
|
|
280 return NGX_ERROR;
|
|
281 }
|
|
282
|
|
283 if (ftruncate(fm->fd, fm->size) == -1) {
|
|
284 ngx_log_error(NGX_LOG_CRIT, fm->log, ngx_errno,
|
|
285 "ftruncate() \"%s\" failed", fm->name);
|
|
286 goto failed;
|
|
287 }
|
|
288
|
|
289 fm->addr = mmap(NULL, fm->size, PROT_READ|PROT_WRITE, MAP_SHARED,
|
|
290 fm->fd, 0);
|
|
291 if (fm->addr != MAP_FAILED) {
|
|
292 return NGX_OK;
|
|
293 }
|
|
294
|
|
295 ngx_log_error(NGX_LOG_CRIT, fm->log, ngx_errno,
|
|
296 "mmap(%uz) \"%s\" failed", fm->size, fm->name);
|
|
297
|
|
298 failed:
|
|
299
|
|
300 if (ngx_close_file(fm->fd) == NGX_FILE_ERROR) {
|
|
301 ngx_log_error(NGX_LOG_ALERT, fm->log, ngx_errno,
|
|
302 ngx_close_file_n " \"%s\" failed", fm->name);
|
|
303 }
|
|
304
|
|
305 return NGX_ERROR;
|
|
306 }
|
|
307
|
|
308
|
|
309 void
|
|
310 ngx_close_file_mapping(ngx_file_mapping_t *fm)
|
|
311 {
|
|
312 if (munmap(fm->addr, fm->size) == -1) {
|
|
313 ngx_log_error(NGX_LOG_CRIT, fm->log, ngx_errno,
|
|
314 "munmap(%uz) \"%s\" failed", fm->size, fm->name);
|
|
315 }
|
|
316
|
|
317 if (ngx_close_file(fm->fd) == NGX_FILE_ERROR) {
|
|
318 ngx_log_error(NGX_LOG_ALERT, fm->log, ngx_errno,
|
|
319 ngx_close_file_n " \"%s\" failed", fm->name);
|
|
320 }
|
|
321 }
|
|
322
|
|
323
|
|
324 ngx_int_t
|
110
|
325 ngx_open_dir(ngx_str_t *name, ngx_dir_t *dir)
|
0
|
326 {
|
|
327 dir->dir = opendir((const char *) name->data);
|
|
328
|
|
329 if (dir->dir == NULL) {
|
|
330 return NGX_ERROR;
|
|
331 }
|
|
332
|
6
|
333 dir->valid_info = 0;
|
0
|
334
|
|
335 return NGX_OK;
|
|
336 }
|
110
|
337
|
|
338
|
238
|
339 ngx_int_t
|
406
|
340 ngx_read_dir(ngx_dir_t *dir)
|
|
341 {
|
|
342 dir->de = readdir(dir->dir);
|
|
343
|
|
344 if (dir->de) {
|
|
345 #if (NGX_HAVE_D_TYPE)
|
|
346 dir->type = dir->de->d_type;
|
456
|
347 #else
|
536
|
348 dir->type = 0;
|
406
|
349 #endif
|
|
350 return NGX_OK;
|
|
351 }
|
|
352
|
|
353 return NGX_ERROR;
|
|
354 }
|
|
355
|
|
356
|
|
357 ngx_int_t
|
238
|
358 ngx_open_glob(ngx_glob_t *gl)
|
|
359 {
|
372
|
360 int n;
|
|
361
|
|
362 n = glob((char *) gl->pattern, GLOB_NOSORT, NULL, &gl->pglob);
|
|
363
|
|
364 if (n == 0) {
|
|
365 return NGX_OK;
|
|
366 }
|
|
367
|
400
|
368 #ifdef GLOB_NOMATCH
|
|
369
|
372
|
370 if (n == GLOB_NOMATCH && gl->test) {
|
238
|
371 return NGX_OK;
|
|
372 }
|
|
373
|
400
|
374 #endif
|
|
375
|
238
|
376 return NGX_ERROR;
|
|
377 }
|
|
378
|
|
379
|
|
380 ngx_int_t
|
|
381 ngx_read_glob(ngx_glob_t *gl, ngx_str_t *name)
|
|
382 {
|
402
|
383 size_t count;
|
|
384
|
|
385 #ifdef GLOB_NOMATCH
|
|
386 count = (size_t) gl->pglob.gl_pathc;
|
|
387 #else
|
|
388 count = (size_t) gl->pglob.gl_matchc;
|
|
389 #endif
|
|
390
|
|
391 if (gl->n < count) {
|
238
|
392
|
|
393 name->len = (size_t) ngx_strlen(gl->pglob.gl_pathv[gl->n]);
|
|
394 name->data = (u_char *) gl->pglob.gl_pathv[gl->n];
|
|
395 gl->n++;
|
|
396
|
|
397 return NGX_OK;
|
|
398 }
|
|
399
|
|
400 return NGX_DONE;
|
|
401 }
|
|
402
|
|
403
|
|
404 void
|
|
405 ngx_close_glob(ngx_glob_t *gl)
|
|
406 {
|
|
407 globfree(&gl->pglob);
|
|
408 }
|
|
409
|
|
410
|
160
|
411 ngx_err_t
|
|
412 ngx_trylock_fd(ngx_fd_t fd)
|
110
|
413 {
|
|
414 struct flock fl;
|
|
415
|
160
|
416 fl.l_start = 0;
|
|
417 fl.l_len = 0;
|
|
418 fl.l_pid = 0;
|
|
419 fl.l_type = F_WRLCK;
|
110
|
420 fl.l_whence = SEEK_SET;
|
160
|
421
|
|
422 if (fcntl(fd, F_SETLK, &fl) == -1) {
|
|
423 return ngx_errno;
|
|
424 }
|
|
425
|
|
426 return 0;
|
|
427 }
|
|
428
|
|
429
|
|
430 ngx_err_t
|
|
431 ngx_lock_fd(ngx_fd_t fd)
|
|
432 {
|
|
433 struct flock fl;
|
|
434
|
|
435 fl.l_start = 0;
|
110
|
436 fl.l_len = 0;
|
|
437 fl.l_pid = 0;
|
|
438 fl.l_type = F_WRLCK;
|
160
|
439 fl.l_whence = SEEK_SET;
|
110
|
440
|
160
|
441 if (fcntl(fd, F_SETLKW, &fl) == -1) {
|
|
442 return ngx_errno;
|
110
|
443 }
|
|
444
|
160
|
445 return 0;
|
110
|
446 }
|
|
447
|
|
448
|
160
|
449 ngx_err_t
|
|
450 ngx_unlock_fd(ngx_fd_t fd)
|
110
|
451 {
|
|
452 struct flock fl;
|
|
453
|
160
|
454 fl.l_start = 0;
|
110
|
455 fl.l_len = 0;
|
|
456 fl.l_pid = 0;
|
|
457 fl.l_type = F_UNLCK;
|
160
|
458 fl.l_whence = SEEK_SET;
|
110
|
459
|
160
|
460 if (fcntl(fd, F_SETLK, &fl) == -1) {
|
|
461 return ngx_errno;
|
110
|
462 }
|
|
463
|
160
|
464 return 0;
|
110
|
465 }
|
390
|
466
|
|
467
|
650
|
468 #if (NGX_HAVE_POSIX_FADVISE) && !(NGX_HAVE_F_READAHEAD)
|
546
|
469
|
|
470 ngx_int_t
|
|
471 ngx_read_ahead(ngx_fd_t fd, size_t n)
|
|
472 {
|
|
473 int err;
|
|
474
|
|
475 err = posix_fadvise(fd, 0, 0, POSIX_FADV_SEQUENTIAL);
|
|
476
|
|
477 if (err == 0) {
|
|
478 return 0;
|
|
479 }
|
|
480
|
|
481 ngx_set_errno(err);
|
|
482 return NGX_FILE_ERROR;
|
|
483 }
|
|
484
|
|
485 #endif
|
|
486
|
|
487
|
390
|
488 #if (NGX_HAVE_O_DIRECT)
|
|
489
|
|
490 ngx_int_t
|
410
|
491 ngx_directio_on(ngx_fd_t fd)
|
390
|
492 {
|
|
493 int flags;
|
|
494
|
|
495 flags = fcntl(fd, F_GETFL);
|
|
496
|
|
497 if (flags == -1) {
|
530
|
498 return NGX_FILE_ERROR;
|
390
|
499 }
|
|
500
|
|
501 return fcntl(fd, F_SETFL, flags | O_DIRECT);
|
|
502 }
|
|
503
|
410
|
504
|
|
505 ngx_int_t
|
|
506 ngx_directio_off(ngx_fd_t fd)
|
|
507 {
|
|
508 int flags;
|
|
509
|
|
510 flags = fcntl(fd, F_GETFL);
|
|
511
|
|
512 if (flags == -1) {
|
530
|
513 return NGX_FILE_ERROR;
|
410
|
514 }
|
|
515
|
|
516 return fcntl(fd, F_SETFL, flags & ~O_DIRECT);
|
|
517 }
|
|
518
|
390
|
519 #endif
|
468
|
520
|
|
521
|
|
522 #if (NGX_HAVE_STATFS)
|
|
523
|
|
524 size_t
|
|
525 ngx_fs_bsize(u_char *name)
|
|
526 {
|
|
527 struct statfs fs;
|
|
528
|
|
529 if (statfs((char *) name, &fs) == -1) {
|
|
530 return 512;
|
|
531 }
|
|
532
|
|
533 if ((fs.f_bsize % 512) != 0) {
|
|
534 return 512;
|
|
535 }
|
|
536
|
|
537 return (size_t) fs.f_bsize;
|
|
538 }
|
|
539
|
|
540 #elif (NGX_HAVE_STATVFS)
|
|
541
|
|
542 size_t
|
|
543 ngx_fs_bsize(u_char *name)
|
|
544 {
|
|
545 struct statvfs fs;
|
|
546
|
|
547 if (statvfs((char *) name, &fs) == -1) {
|
|
548 return 512;
|
|
549 }
|
|
550
|
|
551 if ((fs.f_frsize % 512) != 0) {
|
|
552 return 512;
|
|
553 }
|
|
554
|
|
555 return (size_t) fs.f_frsize;
|
|
556 }
|
|
557
|
|
558 #else
|
|
559
|
|
560 size_t
|
|
561 ngx_fs_bsize(u_char *name)
|
|
562 {
|
|
563 return 512;
|
|
564 }
|
|
565
|
|
566 #endif
|