Mercurial > hg > nginx
annotate src/core/ngx_open_file_cache.c @ 4488:d33ce8cd0d70
Disable symlinks: use O_SEARCH|O_DIRECTORY to open path components.
author | Valentin Bartenev <vbart@nginx.com> |
---|---|
date | Tue, 21 Feb 2012 15:10:13 +0000 |
parents | a786c85e8268 |
children | 47ece8818978 |
rev | line source |
---|---|
1453 | 1 |
2 /* | |
3 * Copyright (C) Igor Sysoev | |
4412 | 4 * Copyright (C) Nginx, Inc. |
1453 | 5 */ |
6 | |
7 | |
8 #include <ngx_config.h> | |
9 #include <ngx_core.h> | |
10 #include <ngx_event.h> | |
11 | |
12 | |
13 /* | |
14 * open file cache caches | |
15 * open file handles with stat() info; | |
16 * directories stat() info; | |
17 * files and directories errors: not found, access denied, etc. | |
18 */ | |
19 | |
20 | |
3178 | 21 #define NGX_MIN_READ_AHEAD (128 * 1024) |
22 | |
23 | |
1453 | 24 static void ngx_open_file_cache_cleanup(void *data); |
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25 #if (NGX_HAVE_OPENAT) |
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26 static ngx_fd_t ngx_openat_file_owner(ngx_fd_t at_fd, const u_char *name, |
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27 ngx_int_t mode, ngx_int_t create, ngx_int_t access, ngx_log_t *log); |
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28 #endif |
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29 static ngx_fd_t ngx_open_file_wrapper(ngx_str_t *name, |
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30 ngx_open_file_info_t *of, ngx_int_t mode, ngx_int_t create, |
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31 ngx_int_t access, ngx_log_t *log); |
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32 static ngx_int_t ngx_file_info_wrapper(ngx_str_t *name, |
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33 ngx_open_file_info_t *of, ngx_file_info_t *fi, ngx_log_t *log); |
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Changed ngx_open_and_stat_file() to use ngx_str_t.
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34 static ngx_int_t ngx_open_and_stat_file(ngx_str_t *name, |
94ef9d25ec5b
Changed ngx_open_and_stat_file() to use ngx_str_t.
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35 ngx_open_file_info_t *of, ngx_log_t *log); |
1775 | 36 static void ngx_open_file_add_event(ngx_open_file_cache_t *cache, |
37 ngx_cached_open_file_t *file, ngx_open_file_info_t *of, ngx_log_t *log); | |
1453 | 38 static void ngx_open_file_cleanup(void *data); |
39 static void ngx_close_cached_file(ngx_open_file_cache_t *cache, | |
1772 | 40 ngx_cached_open_file_t *file, ngx_uint_t min_uses, ngx_log_t *log); |
1775 | 41 static void ngx_open_file_del_event(ngx_cached_open_file_t *file); |
1453 | 42 static void ngx_expire_old_cached_files(ngx_open_file_cache_t *cache, |
43 ngx_uint_t n, ngx_log_t *log); | |
44 static void ngx_open_file_cache_rbtree_insert_value(ngx_rbtree_node_t *temp, | |
45 ngx_rbtree_node_t *node, ngx_rbtree_node_t *sentinel); | |
1775 | 46 static ngx_cached_open_file_t * |
47 ngx_open_file_lookup(ngx_open_file_cache_t *cache, ngx_str_t *name, | |
48 uint32_t hash); | |
1453 | 49 static void ngx_open_file_cache_remove(ngx_event_t *ev); |
50 | |
51 | |
52 ngx_open_file_cache_t * | |
53 ngx_open_file_cache_init(ngx_pool_t *pool, ngx_uint_t max, time_t inactive) | |
54 { | |
55 ngx_pool_cleanup_t *cln; | |
56 ngx_open_file_cache_t *cache; | |
57 | |
58 cache = ngx_palloc(pool, sizeof(ngx_open_file_cache_t)); | |
59 if (cache == NULL) { | |
60 return NULL; | |
61 } | |
62 | |
1761 | 63 ngx_rbtree_init(&cache->rbtree, &cache->sentinel, |
1743
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optimize rbtree initialization and insert
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64 ngx_open_file_cache_rbtree_insert_value); |
1453 | 65 |
1765 | 66 ngx_queue_init(&cache->expire_queue); |
67 | |
1453 | 68 cache->current = 0; |
69 cache->max = max; | |
70 cache->inactive = inactive; | |
71 | |
72 cln = ngx_pool_cleanup_add(pool, 0); | |
73 if (cln == NULL) { | |
74 return NULL; | |
75 } | |
76 | |
77 cln->handler = ngx_open_file_cache_cleanup; | |
78 cln->data = cache; | |
79 | |
80 return cache; | |
81 } | |
82 | |
83 | |
84 static void | |
85 ngx_open_file_cache_cleanup(void *data) | |
86 { | |
87 ngx_open_file_cache_t *cache = data; | |
88 | |
1765 | 89 ngx_queue_t *q; |
1453 | 90 ngx_cached_open_file_t *file; |
91 | |
92 ngx_log_debug0(NGX_LOG_DEBUG_CORE, ngx_cycle->log, 0, | |
93 "open file cache cleanup"); | |
94 | |
95 for ( ;; ) { | |
96 | |
1765 | 97 if (ngx_queue_empty(&cache->expire_queue)) { |
1766 | 98 break; |
1453 | 99 } |
100 | |
1765 | 101 q = ngx_queue_last(&cache->expire_queue); |
102 | |
103 file = ngx_queue_data(q, ngx_cached_open_file_t, queue); | |
104 | |
105 ngx_queue_remove(q); | |
1453 | 106 |
107 ngx_rbtree_delete(&cache->rbtree, &file->node); | |
108 | |
109 cache->current--; | |
110 | |
111 ngx_log_debug1(NGX_LOG_DEBUG_CORE, ngx_cycle->log, 0, | |
112 "delete cached open file: %s", file->name); | |
113 | |
114 if (!file->err && !file->is_dir) { | |
115 file->close = 1; | |
116 file->count = 0; | |
1772 | 117 ngx_close_cached_file(cache, file, 0, ngx_cycle->log); |
1453 | 118 |
119 } else { | |
120 ngx_free(file->name); | |
121 ngx_free(file); | |
122 } | |
123 } | |
124 | |
125 if (cache->current) { | |
126 ngx_log_error(NGX_LOG_ALERT, ngx_cycle->log, 0, | |
127 "%d items still leave in open file cache", | |
128 cache->current); | |
129 } | |
130 | |
131 if (cache->rbtree.root != cache->rbtree.sentinel) { | |
132 ngx_log_error(NGX_LOG_ALERT, ngx_cycle->log, 0, | |
133 "rbtree still is not empty in open file cache"); | |
134 | |
135 } | |
136 } | |
137 | |
138 | |
139 ngx_int_t | |
140 ngx_open_cached_file(ngx_open_file_cache_t *cache, ngx_str_t *name, | |
141 ngx_open_file_info_t *of, ngx_pool_t *pool) | |
142 { | |
143 time_t now; | |
144 uint32_t hash; | |
145 ngx_int_t rc; | |
2756
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*) of.test_only to not open file if only stat() is enough
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146 ngx_file_info_t fi; |
1453 | 147 ngx_pool_cleanup_t *cln; |
148 ngx_cached_open_file_t *file; | |
149 ngx_pool_cleanup_file_t *clnf; | |
150 ngx_open_file_cache_cleanup_t *ofcln; | |
151 | |
2069
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152 of->fd = NGX_INVALID_FILE; |
1453 | 153 of->err = 0; |
154 | |
155 if (cache == NULL) { | |
156 | |
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157 if (of->test_only) { |
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158 |
4479
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parents:
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159 if (ngx_file_info_wrapper(name, of, &fi, pool->log) |
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160 == NGX_FILE_ERROR) |
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161 { |
2756
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162 return NGX_ERROR; |
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163 } |
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164 |
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165 of->uniq = ngx_file_uniq(&fi); |
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166 of->mtime = ngx_file_mtime(&fi); |
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*) of.test_only to not open file if only stat() is enough
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167 of->size = ngx_file_size(&fi); |
3899
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Use more precise stat.st_blocks to account cache size on Unix
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168 of->fs_size = ngx_file_fs_size(&fi); |
2756
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169 of->is_dir = ngx_is_dir(&fi); |
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*) of.test_only to not open file if only stat() is enough
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170 of->is_file = ngx_is_file(&fi); |
09cab3f8d92e
*) of.test_only to not open file if only stat() is enough
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171 of->is_link = ngx_is_link(&fi); |
09cab3f8d92e
*) of.test_only to not open file if only stat() is enough
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172 of->is_exec = ngx_is_exec(&fi); |
09cab3f8d92e
*) of.test_only to not open file if only stat() is enough
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173 |
09cab3f8d92e
*) of.test_only to not open file if only stat() is enough
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174 return NGX_OK; |
09cab3f8d92e
*) of.test_only to not open file if only stat() is enough
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175 } |
09cab3f8d92e
*) of.test_only to not open file if only stat() is enough
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parents:
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changeset
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176 |
1453 | 177 cln = ngx_pool_cleanup_add(pool, sizeof(ngx_pool_cleanup_file_t)); |
178 if (cln == NULL) { | |
179 return NGX_ERROR; | |
180 } | |
181 | |
4476
94ef9d25ec5b
Changed ngx_open_and_stat_file() to use ngx_str_t.
Andrey Belov <defan@nginx.com>
parents:
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changeset
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182 rc = ngx_open_and_stat_file(name, of, pool->log); |
1453 | 183 |
184 if (rc == NGX_OK && !of->is_dir) { | |
185 cln->handler = ngx_pool_cleanup_file; | |
186 clnf = cln->data; | |
187 | |
188 clnf->fd = of->fd; | |
189 clnf->name = name->data; | |
190 clnf->log = pool->log; | |
191 } | |
192 | |
193 return rc; | |
194 } | |
195 | |
196 cln = ngx_pool_cleanup_add(pool, sizeof(ngx_open_file_cache_cleanup_t)); | |
197 if (cln == NULL) { | |
198 return NGX_ERROR; | |
199 } | |
200 | |
201 now = ngx_time(); | |
202 | |
1775 | 203 hash = ngx_crc32_long(name->data, name->len); |
204 | |
205 file = ngx_open_file_lookup(cache, name, hash); | |
206 | |
207 if (file) { | |
208 | |
209 file->uses++; | |
210 | |
1987 | 211 ngx_queue_remove(&file->queue); |
212 | |
1775 | 213 if (file->fd == NGX_INVALID_FILE && file->err == 0 && !file->is_dir) { |
214 | |
215 /* file was not used often enough to keep open */ | |
216 | |
4476
94ef9d25ec5b
Changed ngx_open_and_stat_file() to use ngx_str_t.
Andrey Belov <defan@nginx.com>
parents:
4412
diff
changeset
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217 rc = ngx_open_and_stat_file(name, of, pool->log); |
1453 | 218 |
1775 | 219 if (rc != NGX_OK && (of->err == 0 || !of->errors)) { |
220 goto failed; | |
221 } | |
222 | |
223 goto add_event; | |
1453 | 224 } |
225 | |
2070 | 226 if (file->use_event |
2063
67a29af877ed
initialize of.uniq in ngx_open_cached_file()
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227 || (file->event == NULL |
67a29af877ed
initialize of.uniq in ngx_open_cached_file()
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228 && (of->uniq == 0 || of->uniq == file->uniq) |
4477
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Added disable_symlinks directive.
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229 && now - file->created < of->valid |
7033faf6dc3c
Added disable_symlinks directive.
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230 #if (NGX_HAVE_OPENAT) |
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Added disable_symlinks directive.
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231 && of->disable_symlinks == file->disable_symlinks |
7033faf6dc3c
Added disable_symlinks directive.
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232 #endif |
7033faf6dc3c
Added disable_symlinks directive.
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233 )) |
1775 | 234 { |
235 if (file->err == 0) { | |
1772 | 236 |
1775 | 237 of->fd = file->fd; |
238 of->uniq = file->uniq; | |
239 of->mtime = file->mtime; | |
240 of->size = file->size; | |
1453 | 241 |
1775 | 242 of->is_dir = file->is_dir; |
243 of->is_file = file->is_file; | |
244 of->is_link = file->is_link; | |
245 of->is_exec = file->is_exec; | |
2246
987831d73bd8
cache directio flag in open file cache
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2231
diff
changeset
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246 of->is_directio = file->is_directio; |
1453 | 247 |
1775 | 248 if (!file->is_dir) { |
249 file->count++; | |
250 ngx_open_file_add_event(cache, file, of, pool->log); | |
1453 | 251 } |
252 | |
1775 | 253 } else { |
254 of->err = file->err; | |
4477
7033faf6dc3c
Added disable_symlinks directive.
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parents:
4476
diff
changeset
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255 #if (NGX_HAVE_OPENAT) |
7033faf6dc3c
Added disable_symlinks directive.
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parents:
4476
diff
changeset
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256 of->failed = file->disable_symlinks ? ngx_openat_file_n |
7033faf6dc3c
Added disable_symlinks directive.
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parents:
4476
diff
changeset
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257 : ngx_open_file_n; |
7033faf6dc3c
Added disable_symlinks directive.
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parents:
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diff
changeset
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258 #else |
2783
87c088e6956a
set of.failed for cached error, the bug has been introduced in r2757
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2782
diff
changeset
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259 of->failed = ngx_open_file_n; |
4477
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
260 #endif |
1775 | 261 } |
262 | |
263 goto found; | |
264 } | |
265 | |
266 ngx_log_debug4(NGX_LOG_DEBUG_CORE, pool->log, 0, | |
267 "retest open file: %s, fd:%d, c:%d, e:%d", | |
268 file->name, file->fd, file->count, file->err); | |
1453 | 269 |
1775 | 270 if (file->is_dir) { |
271 | |
272 /* | |
273 * chances that directory became file are very small | |
274 * so test_dir flag allows to use a single syscall | |
275 * in ngx_file_info() instead of three syscalls | |
276 */ | |
277 | |
278 of->test_dir = 1; | |
279 } | |
280 | |
2069
23930ccd2642
use ngx_file_info() and test uniq if file is already open
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parents:
2063
diff
changeset
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281 of->fd = file->fd; |
23930ccd2642
use ngx_file_info() and test uniq if file is already open
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parents:
2063
diff
changeset
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282 of->uniq = file->uniq; |
23930ccd2642
use ngx_file_info() and test uniq if file is already open
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parents:
2063
diff
changeset
|
283 |
4476
94ef9d25ec5b
Changed ngx_open_and_stat_file() to use ngx_str_t.
Andrey Belov <defan@nginx.com>
parents:
4412
diff
changeset
|
284 rc = ngx_open_and_stat_file(name, of, pool->log); |
1453 | 285 |
1775 | 286 if (rc != NGX_OK && (of->err == 0 || !of->errors)) { |
287 goto failed; | |
288 } | |
289 | |
290 if (of->is_dir) { | |
291 | |
292 if (file->is_dir || file->err) { | |
293 goto update; | |
294 } | |
295 | |
296 /* file became directory */ | |
1453 | 297 |
1775 | 298 } else if (of->err == 0) { /* file */ |
299 | |
300 if (file->is_dir || file->err) { | |
301 goto add_event; | |
302 } | |
1453 | 303 |
2070 | 304 if (of->uniq == file->uniq) { |
1453 | 305 |
1775 | 306 if (file->event) { |
307 file->use_event = 1; | |
1453 | 308 } |
309 | |
4101
31cf2902de60
Fix of the previous commit: is_directio flag processing introduced in r4077
Igor Sysoev <igor@sysoev.ru>
parents:
4100
diff
changeset
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310 of->is_directio = file->is_directio; |
31cf2902de60
Fix of the previous commit: is_directio flag processing introduced in r4077
Igor Sysoev <igor@sysoev.ru>
parents:
4100
diff
changeset
|
311 |
4100
efeee901439a
Bugfix: open_file_cache did not update file info on retest.
Igor Sysoev <igor@sysoev.ru>
parents:
4076
diff
changeset
|
312 goto update; |
1775 | 313 } |
1453 | 314 |
1775 | 315 /* file was changed */ |
1453 | 316 |
1775 | 317 } else { /* error to cache */ |
1453 | 318 |
1775 | 319 if (file->err || file->is_dir) { |
320 goto update; | |
1453 | 321 } |
322 | |
1775 | 323 /* file was removed, etc. */ |
324 } | |
325 | |
326 if (file->count == 0) { | |
327 | |
328 ngx_open_file_del_event(file); | |
1453 | 329 |
1775 | 330 if (ngx_close_file(file->fd) == NGX_FILE_ERROR) { |
331 ngx_log_error(NGX_LOG_ALERT, pool->log, ngx_errno, | |
4476
94ef9d25ec5b
Changed ngx_open_and_stat_file() to use ngx_str_t.
Andrey Belov <defan@nginx.com>
parents:
4412
diff
changeset
|
332 ngx_close_file_n " \"%V\" failed", name); |
1775 | 333 } |
1453 | 334 |
1775 | 335 goto add_event; |
336 } | |
337 | |
338 ngx_rbtree_delete(&cache->rbtree, &file->node); | |
339 | |
340 cache->current--; | |
341 | |
342 file->close = 1; | |
343 | |
344 goto create; | |
1453 | 345 } |
346 | |
347 /* not found */ | |
348 | |
4476
94ef9d25ec5b
Changed ngx_open_and_stat_file() to use ngx_str_t.
Andrey Belov <defan@nginx.com>
parents:
4412
diff
changeset
|
349 rc = ngx_open_and_stat_file(name, of, pool->log); |
1453 | 350 |
351 if (rc != NGX_OK && (of->err == 0 || !of->errors)) { | |
352 goto failed; | |
353 } | |
354 | |
355 create: | |
356 | |
357 if (cache->current >= cache->max) { | |
358 ngx_expire_old_cached_files(cache, 0, pool->log); | |
359 } | |
360 | |
361 file = ngx_alloc(sizeof(ngx_cached_open_file_t), pool->log); | |
362 | |
363 if (file == NULL) { | |
364 goto failed; | |
365 } | |
366 | |
367 file->name = ngx_alloc(name->len + 1, pool->log); | |
368 | |
369 if (file->name == NULL) { | |
370 ngx_free(file); | |
371 file = NULL; | |
372 goto failed; | |
373 } | |
374 | |
375 ngx_cpystrn(file->name, name->data, name->len + 1); | |
376 | |
377 file->node.key = hash; | |
378 | |
379 ngx_rbtree_insert(&cache->rbtree, &file->node); | |
380 | |
381 cache->current++; | |
382 | |
1775 | 383 file->uses = 1; |
1453 | 384 file->count = 0; |
2934
b6d588fa3ee9
initialize use_event field in open file cache
Igor Sysoev <igor@sysoev.ru>
parents:
2783
diff
changeset
|
385 file->use_event = 0; |
1775 | 386 file->event = NULL; |
387 | |
388 add_event: | |
389 | |
390 ngx_open_file_add_event(cache, file, of, pool->log); | |
1453 | 391 |
392 update: | |
393 | |
394 file->fd = of->fd; | |
395 file->err = of->err; | |
4477
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
396 #if (NGX_HAVE_OPENAT) |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
397 file->disable_symlinks = of->disable_symlinks; |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
398 #endif |
1453 | 399 |
400 if (of->err == 0) { | |
401 file->uniq = of->uniq; | |
402 file->mtime = of->mtime; | |
403 file->size = of->size; | |
404 | |
405 file->close = 0; | |
406 | |
407 file->is_dir = of->is_dir; | |
408 file->is_file = of->is_file; | |
409 file->is_link = of->is_link; | |
410 file->is_exec = of->is_exec; | |
2246
987831d73bd8
cache directio flag in open file cache
Igor Sysoev <igor@sysoev.ru>
parents:
2231
diff
changeset
|
411 file->is_directio = of->is_directio; |
1453 | 412 |
413 if (!of->is_dir) { | |
414 file->count++; | |
415 } | |
416 } | |
417 | |
418 file->created = now; | |
419 | |
420 found: | |
421 | |
422 file->accessed = now; | |
423 | |
1765 | 424 ngx_queue_insert_head(&cache->expire_queue, &file->queue); |
1453 | 425 |
1772 | 426 ngx_log_debug5(NGX_LOG_DEBUG_CORE, pool->log, 0, |
427 "cached open file: %s, fd:%d, c:%d, e:%d, u:%d", | |
428 file->name, file->fd, file->count, file->err, file->uses); | |
1453 | 429 |
430 if (of->err == 0) { | |
431 | |
432 if (!of->is_dir) { | |
433 cln->handler = ngx_open_file_cleanup; | |
434 ofcln = cln->data; | |
435 | |
436 ofcln->cache = cache; | |
437 ofcln->file = file; | |
1772 | 438 ofcln->min_uses = of->min_uses; |
1453 | 439 ofcln->log = pool->log; |
440 } | |
441 | |
442 return NGX_OK; | |
443 } | |
444 | |
445 return NGX_ERROR; | |
446 | |
447 failed: | |
448 | |
1988
34051c712e41
fix segfault when file is deleted and open_file_cache_errors is off
Igor Sysoev <igor@sysoev.ru>
parents:
1987
diff
changeset
|
449 if (file) { |
1453 | 450 ngx_rbtree_delete(&cache->rbtree, &file->node); |
451 | |
452 cache->current--; | |
453 | |
1988
34051c712e41
fix segfault when file is deleted and open_file_cache_errors is off
Igor Sysoev <igor@sysoev.ru>
parents:
1987
diff
changeset
|
454 if (file->count == 0) { |
34051c712e41
fix segfault when file is deleted and open_file_cache_errors is off
Igor Sysoev <igor@sysoev.ru>
parents:
1987
diff
changeset
|
455 |
2006
b52cb9bf2064
style fix: remove tabs and trailing spaces
Igor Sysoev <igor@sysoev.ru>
parents:
1988
diff
changeset
|
456 if (file->fd != NGX_INVALID_FILE) { |
b52cb9bf2064
style fix: remove tabs and trailing spaces
Igor Sysoev <igor@sysoev.ru>
parents:
1988
diff
changeset
|
457 if (ngx_close_file(file->fd) == NGX_FILE_ERROR) { |
b52cb9bf2064
style fix: remove tabs and trailing spaces
Igor Sysoev <igor@sysoev.ru>
parents:
1988
diff
changeset
|
458 ngx_log_error(NGX_LOG_ALERT, pool->log, ngx_errno, |
b52cb9bf2064
style fix: remove tabs and trailing spaces
Igor Sysoev <igor@sysoev.ru>
parents:
1988
diff
changeset
|
459 ngx_close_file_n " \"%s\" failed", |
1988
34051c712e41
fix segfault when file is deleted and open_file_cache_errors is off
Igor Sysoev <igor@sysoev.ru>
parents:
1987
diff
changeset
|
460 file->name); |
2006
b52cb9bf2064
style fix: remove tabs and trailing spaces
Igor Sysoev <igor@sysoev.ru>
parents:
1988
diff
changeset
|
461 } |
b52cb9bf2064
style fix: remove tabs and trailing spaces
Igor Sysoev <igor@sysoev.ru>
parents:
1988
diff
changeset
|
462 } |
1988
34051c712e41
fix segfault when file is deleted and open_file_cache_errors is off
Igor Sysoev <igor@sysoev.ru>
parents:
1987
diff
changeset
|
463 |
34051c712e41
fix segfault when file is deleted and open_file_cache_errors is off
Igor Sysoev <igor@sysoev.ru>
parents:
1987
diff
changeset
|
464 ngx_free(file->name); |
34051c712e41
fix segfault when file is deleted and open_file_cache_errors is off
Igor Sysoev <igor@sysoev.ru>
parents:
1987
diff
changeset
|
465 ngx_free(file); |
34051c712e41
fix segfault when file is deleted and open_file_cache_errors is off
Igor Sysoev <igor@sysoev.ru>
parents:
1987
diff
changeset
|
466 |
34051c712e41
fix segfault when file is deleted and open_file_cache_errors is off
Igor Sysoev <igor@sysoev.ru>
parents:
1987
diff
changeset
|
467 } else { |
34051c712e41
fix segfault when file is deleted and open_file_cache_errors is off
Igor Sysoev <igor@sysoev.ru>
parents:
1987
diff
changeset
|
468 file->close = 1; |
1453 | 469 } |
470 } | |
471 | |
472 if (of->fd != NGX_INVALID_FILE) { | |
473 if (ngx_close_file(of->fd) == NGX_FILE_ERROR) { | |
474 ngx_log_error(NGX_LOG_ALERT, pool->log, ngx_errno, | |
4476
94ef9d25ec5b
Changed ngx_open_and_stat_file() to use ngx_str_t.
Andrey Belov <defan@nginx.com>
parents:
4412
diff
changeset
|
475 ngx_close_file_n " \"%V\" failed", name); |
1453 | 476 } |
477 } | |
478 | |
479 return NGX_ERROR; | |
480 } | |
481 | |
482 | |
4477
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
483 #if (NGX_HAVE_OPENAT) |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
484 |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
485 static ngx_fd_t |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
486 ngx_openat_file_owner(ngx_fd_t at_fd, const u_char *name, |
4479
5e6436812c9a
Disable symlinks: cleanup error handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4477
diff
changeset
|
487 ngx_int_t mode, ngx_int_t create, ngx_int_t access, ngx_log_t *log) |
4477
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
488 { |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
489 ngx_fd_t fd; |
4479
5e6436812c9a
Disable symlinks: cleanup error handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4477
diff
changeset
|
490 ngx_err_t err; |
4477
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
491 ngx_file_info_t fi, atfi; |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
492 |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
493 /* |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
494 * To allow symlinks with the same owner, use openat() (followed |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
495 * by fstat()) and fstatat(AT_SYMLINK_NOFOLLOW), and then compare |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
496 * uids between fstat() and fstatat(). |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
497 * |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
498 * As there is a race between openat() and fstatat() we don't |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
499 * know if openat() in fact opened symlink or not. Therefore, |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
500 * we have to compare uids even if fstatat() reports the opened |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
501 * component isn't a symlink (as we don't know whether it was |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
502 * symlink during openat() or not). |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
503 */ |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
504 |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
505 fd = ngx_openat_file(at_fd, name, mode, create, access); |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
506 |
4486
a996bb40a0bb
Disable symlinks: cleanups once again.
Valentin Bartenev <vbart@nginx.com>
parents:
4485
diff
changeset
|
507 if (fd == NGX_INVALID_FILE) { |
a996bb40a0bb
Disable symlinks: cleanups once again.
Valentin Bartenev <vbart@nginx.com>
parents:
4485
diff
changeset
|
508 return NGX_INVALID_FILE; |
4477
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
509 } |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
510 |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
511 if (ngx_file_at_info(at_fd, name, &atfi, AT_SYMLINK_NOFOLLOW) |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
512 == NGX_FILE_ERROR) |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
513 { |
4479
5e6436812c9a
Disable symlinks: cleanup error handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4477
diff
changeset
|
514 err = ngx_errno; |
5e6436812c9a
Disable symlinks: cleanup error handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4477
diff
changeset
|
515 goto failed; |
4477
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
516 } |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
517 |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
518 if (ngx_fd_info(fd, &fi) == NGX_FILE_ERROR) { |
4479
5e6436812c9a
Disable symlinks: cleanup error handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4477
diff
changeset
|
519 err = ngx_errno; |
5e6436812c9a
Disable symlinks: cleanup error handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4477
diff
changeset
|
520 goto failed; |
4477
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
521 } |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
522 |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
523 if (fi.st_uid != atfi.st_uid) { |
4479
5e6436812c9a
Disable symlinks: cleanup error handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4477
diff
changeset
|
524 err = NGX_ELOOP; |
5e6436812c9a
Disable symlinks: cleanup error handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4477
diff
changeset
|
525 goto failed; |
4477
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
526 } |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
527 |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
528 return fd; |
4479
5e6436812c9a
Disable symlinks: cleanup error handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4477
diff
changeset
|
529 |
5e6436812c9a
Disable symlinks: cleanup error handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4477
diff
changeset
|
530 failed: |
5e6436812c9a
Disable symlinks: cleanup error handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4477
diff
changeset
|
531 |
5e6436812c9a
Disable symlinks: cleanup error handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4477
diff
changeset
|
532 if (ngx_close_file(fd) == NGX_FILE_ERROR) { |
5e6436812c9a
Disable symlinks: cleanup error handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4477
diff
changeset
|
533 ngx_log_error(NGX_LOG_ALERT, log, ngx_errno, |
5e6436812c9a
Disable symlinks: cleanup error handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4477
diff
changeset
|
534 ngx_close_file_n " \"%V\" failed", name); |
5e6436812c9a
Disable symlinks: cleanup error handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4477
diff
changeset
|
535 } |
5e6436812c9a
Disable symlinks: cleanup error handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4477
diff
changeset
|
536 |
5e6436812c9a
Disable symlinks: cleanup error handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4477
diff
changeset
|
537 ngx_set_errno(err); |
5e6436812c9a
Disable symlinks: cleanup error handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4477
diff
changeset
|
538 |
5e6436812c9a
Disable symlinks: cleanup error handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4477
diff
changeset
|
539 return NGX_INVALID_FILE; |
4477
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
540 } |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
541 |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
542 #endif |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
543 |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
544 |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
545 static ngx_fd_t |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
546 ngx_open_file_wrapper(ngx_str_t *name, ngx_open_file_info_t *of, |
4479
5e6436812c9a
Disable symlinks: cleanup error handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4477
diff
changeset
|
547 ngx_int_t mode, ngx_int_t create, ngx_int_t access, ngx_log_t *log) |
4477
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
548 { |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
549 ngx_fd_t fd; |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
550 |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
551 #if !(NGX_HAVE_OPENAT) |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
552 |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
553 fd = ngx_open_file(name->data, mode, create, access); |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
554 |
4479
5e6436812c9a
Disable symlinks: cleanup error handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4477
diff
changeset
|
555 if (fd == NGX_INVALID_FILE) { |
4477
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
556 of->err = ngx_errno; |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
557 of->failed = ngx_open_file_n; |
4479
5e6436812c9a
Disable symlinks: cleanup error handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4477
diff
changeset
|
558 return NGX_INVALID_FILE; |
4477
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
559 } |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
560 |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
561 return fd; |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
562 |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
563 #else |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
564 |
4480
5a3cb84545e5
Disable symlinks: fixed edge cases of path handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4479
diff
changeset
|
565 u_char *p, *cp, *end; |
5a3cb84545e5
Disable symlinks: fixed edge cases of path handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4479
diff
changeset
|
566 ngx_fd_t at_fd; |
5a3cb84545e5
Disable symlinks: fixed edge cases of path handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4479
diff
changeset
|
567 ngx_str_t at_name; |
4477
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
568 |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
569 if (of->disable_symlinks == NGX_DISABLE_SYMLINKS_OFF) { |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
570 fd = ngx_open_file(name->data, mode, create, access); |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
571 |
4479
5e6436812c9a
Disable symlinks: cleanup error handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4477
diff
changeset
|
572 if (fd == NGX_INVALID_FILE) { |
4477
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
573 of->err = ngx_errno; |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
574 of->failed = ngx_open_file_n; |
4479
5e6436812c9a
Disable symlinks: cleanup error handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4477
diff
changeset
|
575 return NGX_INVALID_FILE; |
4477
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
576 } |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
577 |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
578 return fd; |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
579 } |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
580 |
4480
5a3cb84545e5
Disable symlinks: fixed edge cases of path handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4479
diff
changeset
|
581 p = name->data; |
5a3cb84545e5
Disable symlinks: fixed edge cases of path handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4479
diff
changeset
|
582 end = p + name->len; |
5a3cb84545e5
Disable symlinks: fixed edge cases of path handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4479
diff
changeset
|
583 |
5a3cb84545e5
Disable symlinks: fixed edge cases of path handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4479
diff
changeset
|
584 at_name = *name; |
4477
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
585 |
4486
a996bb40a0bb
Disable symlinks: cleanups once again.
Valentin Bartenev <vbart@nginx.com>
parents:
4485
diff
changeset
|
586 if (*p == '/') { |
a996bb40a0bb
Disable symlinks: cleanups once again.
Valentin Bartenev <vbart@nginx.com>
parents:
4485
diff
changeset
|
587 at_fd = ngx_open_file("/", |
4488
d33ce8cd0d70
Disable symlinks: use O_SEARCH|O_DIRECTORY to open path components.
Valentin Bartenev <vbart@nginx.com>
parents:
4487
diff
changeset
|
588 NGX_FILE_SEARCH|NGX_FILE_NONBLOCK, |
4486
a996bb40a0bb
Disable symlinks: cleanups once again.
Valentin Bartenev <vbart@nginx.com>
parents:
4485
diff
changeset
|
589 NGX_FILE_OPEN, 0); |
4477
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
590 |
4484
f78a29a2f9e6
Disable symlinks: error handling cleanup again.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4480
diff
changeset
|
591 if (at_fd == NGX_INVALID_FILE) { |
4480
5a3cb84545e5
Disable symlinks: fixed edge cases of path handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4479
diff
changeset
|
592 of->err = ngx_errno; |
5a3cb84545e5
Disable symlinks: fixed edge cases of path handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4479
diff
changeset
|
593 of->failed = ngx_openat_file_n; |
4484
f78a29a2f9e6
Disable symlinks: error handling cleanup again.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4480
diff
changeset
|
594 return NGX_INVALID_FILE; |
4480
5a3cb84545e5
Disable symlinks: fixed edge cases of path handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4479
diff
changeset
|
595 } |
4479
5e6436812c9a
Disable symlinks: cleanup error handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4477
diff
changeset
|
596 |
4480
5a3cb84545e5
Disable symlinks: fixed edge cases of path handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4479
diff
changeset
|
597 at_name.len = 1; |
5a3cb84545e5
Disable symlinks: fixed edge cases of path handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4479
diff
changeset
|
598 p++; |
4486
a996bb40a0bb
Disable symlinks: cleanups once again.
Valentin Bartenev <vbart@nginx.com>
parents:
4485
diff
changeset
|
599 |
a996bb40a0bb
Disable symlinks: cleanups once again.
Valentin Bartenev <vbart@nginx.com>
parents:
4485
diff
changeset
|
600 } else { |
a996bb40a0bb
Disable symlinks: cleanups once again.
Valentin Bartenev <vbart@nginx.com>
parents:
4485
diff
changeset
|
601 at_fd = NGX_AT_FDCWD; |
4480
5a3cb84545e5
Disable symlinks: fixed edge cases of path handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4479
diff
changeset
|
602 } |
4477
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
603 |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
604 for ( ;; ) { |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
605 cp = ngx_strlchr(p, end, '/'); |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
606 if (cp == NULL) { |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
607 break; |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
608 } |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
609 |
4480
5a3cb84545e5
Disable symlinks: fixed edge cases of path handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4479
diff
changeset
|
610 if (cp == p) { |
5a3cb84545e5
Disable symlinks: fixed edge cases of path handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4479
diff
changeset
|
611 p++; |
5a3cb84545e5
Disable symlinks: fixed edge cases of path handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4479
diff
changeset
|
612 continue; |
5a3cb84545e5
Disable symlinks: fixed edge cases of path handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4479
diff
changeset
|
613 } |
5a3cb84545e5
Disable symlinks: fixed edge cases of path handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4479
diff
changeset
|
614 |
4477
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
615 *cp = '\0'; |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
616 |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
617 if (of->disable_symlinks == NGX_DISABLE_SYMLINKS_NOTOWNER) { |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
618 fd = ngx_openat_file_owner(at_fd, p, |
4488
d33ce8cd0d70
Disable symlinks: use O_SEARCH|O_DIRECTORY to open path components.
Valentin Bartenev <vbart@nginx.com>
parents:
4487
diff
changeset
|
619 NGX_FILE_SEARCH|NGX_FILE_NONBLOCK, |
4479
5e6436812c9a
Disable symlinks: cleanup error handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4477
diff
changeset
|
620 NGX_FILE_OPEN, 0, log); |
4477
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
621 |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
622 } else { |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
623 fd = ngx_openat_file(at_fd, p, |
4488
d33ce8cd0d70
Disable symlinks: use O_SEARCH|O_DIRECTORY to open path components.
Valentin Bartenev <vbart@nginx.com>
parents:
4487
diff
changeset
|
624 NGX_FILE_SEARCH|NGX_FILE_NONBLOCK|NGX_FILE_NOFOLLOW, |
4477
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
625 NGX_FILE_OPEN, 0); |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
626 } |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
627 |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
628 *cp = '/'; |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
629 |
4479
5e6436812c9a
Disable symlinks: cleanup error handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4477
diff
changeset
|
630 if (fd == NGX_INVALID_FILE) { |
4477
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
631 of->err = ngx_errno; |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
632 of->failed = ngx_openat_file_n; |
4479
5e6436812c9a
Disable symlinks: cleanup error handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4477
diff
changeset
|
633 goto failed; |
5e6436812c9a
Disable symlinks: cleanup error handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4477
diff
changeset
|
634 } |
5e6436812c9a
Disable symlinks: cleanup error handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4477
diff
changeset
|
635 |
4485
f7d131008e9c
Disable symlinks: added explicit cast of AT_FDCWD (ticket #111).
Maxim Dounin <mdounin@mdounin.ru>
parents:
4484
diff
changeset
|
636 if (at_fd != NGX_AT_FDCWD && ngx_close_file(at_fd) == NGX_FILE_ERROR) { |
4479
5e6436812c9a
Disable symlinks: cleanup error handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4477
diff
changeset
|
637 ngx_log_error(NGX_LOG_ALERT, log, ngx_errno, |
4484
f78a29a2f9e6
Disable symlinks: error handling cleanup again.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4480
diff
changeset
|
638 ngx_close_file_n " \"%V\" failed", &at_name); |
4477
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
639 } |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
640 |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
641 p = cp + 1; |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
642 at_fd = fd; |
4479
5e6436812c9a
Disable symlinks: cleanup error handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4477
diff
changeset
|
643 at_name.len = cp - at_name.data; |
4477
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
644 } |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
645 |
4486
a996bb40a0bb
Disable symlinks: cleanups once again.
Valentin Bartenev <vbart@nginx.com>
parents:
4485
diff
changeset
|
646 if (p == end) { |
4480
5a3cb84545e5
Disable symlinks: fixed edge cases of path handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4479
diff
changeset
|
647 |
5a3cb84545e5
Disable symlinks: fixed edge cases of path handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4479
diff
changeset
|
648 /* |
4488
d33ce8cd0d70
Disable symlinks: use O_SEARCH|O_DIRECTORY to open path components.
Valentin Bartenev <vbart@nginx.com>
parents:
4487
diff
changeset
|
649 * If pathname ends with a trailing slash, assume the last path |
d33ce8cd0d70
Disable symlinks: use O_SEARCH|O_DIRECTORY to open path components.
Valentin Bartenev <vbart@nginx.com>
parents:
4487
diff
changeset
|
650 * component is a directory and reopen it with requested flags; |
d33ce8cd0d70
Disable symlinks: use O_SEARCH|O_DIRECTORY to open path components.
Valentin Bartenev <vbart@nginx.com>
parents:
4487
diff
changeset
|
651 * if not, fail with ENOTDIR as per POSIX. |
4480
5a3cb84545e5
Disable symlinks: fixed edge cases of path handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4479
diff
changeset
|
652 * |
4488
d33ce8cd0d70
Disable symlinks: use O_SEARCH|O_DIRECTORY to open path components.
Valentin Bartenev <vbart@nginx.com>
parents:
4487
diff
changeset
|
653 * We cannot rely on O_DIRECTORY in the loop above to check |
d33ce8cd0d70
Disable symlinks: use O_SEARCH|O_DIRECTORY to open path components.
Valentin Bartenev <vbart@nginx.com>
parents:
4487
diff
changeset
|
654 * that the last path component is a directory because |
d33ce8cd0d70
Disable symlinks: use O_SEARCH|O_DIRECTORY to open path components.
Valentin Bartenev <vbart@nginx.com>
parents:
4487
diff
changeset
|
655 * O_DIRECTORY doesn't work on FreeBSD 8. Fortunately, by |
d33ce8cd0d70
Disable symlinks: use O_SEARCH|O_DIRECTORY to open path components.
Valentin Bartenev <vbart@nginx.com>
parents:
4487
diff
changeset
|
656 * reopening a directory, we don't depend on it at all. |
4480
5a3cb84545e5
Disable symlinks: fixed edge cases of path handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4479
diff
changeset
|
657 */ |
5a3cb84545e5
Disable symlinks: fixed edge cases of path handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4479
diff
changeset
|
658 |
4488
d33ce8cd0d70
Disable symlinks: use O_SEARCH|O_DIRECTORY to open path components.
Valentin Bartenev <vbart@nginx.com>
parents:
4487
diff
changeset
|
659 fd = ngx_openat_file(at_fd, ".", mode, create, access); |
d33ce8cd0d70
Disable symlinks: use O_SEARCH|O_DIRECTORY to open path components.
Valentin Bartenev <vbart@nginx.com>
parents:
4487
diff
changeset
|
660 goto done; |
4480
5a3cb84545e5
Disable symlinks: fixed edge cases of path handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4479
diff
changeset
|
661 } |
5a3cb84545e5
Disable symlinks: fixed edge cases of path handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4479
diff
changeset
|
662 |
4487
a786c85e8268
Disable symlinks: don't allow creating or truncating a file via a symlink in
Valentin Bartenev <vbart@nginx.com>
parents:
4486
diff
changeset
|
663 if (of->disable_symlinks == NGX_DISABLE_SYMLINKS_NOTOWNER |
a786c85e8268
Disable symlinks: don't allow creating or truncating a file via a symlink in
Valentin Bartenev <vbart@nginx.com>
parents:
4486
diff
changeset
|
664 && !(create & (NGX_FILE_CREATE_OR_OPEN|NGX_FILE_TRUNCATE))) |
a786c85e8268
Disable symlinks: don't allow creating or truncating a file via a symlink in
Valentin Bartenev <vbart@nginx.com>
parents:
4486
diff
changeset
|
665 { |
4479
5e6436812c9a
Disable symlinks: cleanup error handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4477
diff
changeset
|
666 fd = ngx_openat_file_owner(at_fd, p, mode, create, access, log); |
4477
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
667 |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
668 } else { |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
669 fd = ngx_openat_file(at_fd, p, mode|NGX_FILE_NOFOLLOW, create, access); |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
670 } |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
671 |
4488
d33ce8cd0d70
Disable symlinks: use O_SEARCH|O_DIRECTORY to open path components.
Valentin Bartenev <vbart@nginx.com>
parents:
4487
diff
changeset
|
672 done: |
d33ce8cd0d70
Disable symlinks: use O_SEARCH|O_DIRECTORY to open path components.
Valentin Bartenev <vbart@nginx.com>
parents:
4487
diff
changeset
|
673 |
4479
5e6436812c9a
Disable symlinks: cleanup error handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4477
diff
changeset
|
674 if (fd == NGX_INVALID_FILE) { |
4477
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
675 of->err = ngx_errno; |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
676 of->failed = ngx_openat_file_n; |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
677 } |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
678 |
4479
5e6436812c9a
Disable symlinks: cleanup error handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4477
diff
changeset
|
679 failed: |
5e6436812c9a
Disable symlinks: cleanup error handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4477
diff
changeset
|
680 |
4485
f7d131008e9c
Disable symlinks: added explicit cast of AT_FDCWD (ticket #111).
Maxim Dounin <mdounin@mdounin.ru>
parents:
4484
diff
changeset
|
681 if (at_fd != NGX_AT_FDCWD && ngx_close_file(at_fd) == NGX_FILE_ERROR) { |
4479
5e6436812c9a
Disable symlinks: cleanup error handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4477
diff
changeset
|
682 ngx_log_error(NGX_LOG_ALERT, log, ngx_errno, |
4484
f78a29a2f9e6
Disable symlinks: error handling cleanup again.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4480
diff
changeset
|
683 ngx_close_file_n " \"%V\" failed", &at_name); |
4479
5e6436812c9a
Disable symlinks: cleanup error handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4477
diff
changeset
|
684 } |
4477
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
685 |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
686 return fd; |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
687 #endif |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
688 } |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
689 |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
690 |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
691 static ngx_int_t |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
692 ngx_file_info_wrapper(ngx_str_t *name, ngx_open_file_info_t *of, |
4479
5e6436812c9a
Disable symlinks: cleanup error handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4477
diff
changeset
|
693 ngx_file_info_t *fi, ngx_log_t *log) |
4477
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
694 { |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
695 ngx_int_t rc; |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
696 |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
697 #if !(NGX_HAVE_OPENAT) |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
698 |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
699 rc = ngx_file_info(name->data, fi); |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
700 |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
701 if (rc == NGX_FILE_ERROR) { |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
702 of->err = ngx_errno; |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
703 of->failed = ngx_file_info_n; |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
704 return NGX_FILE_ERROR; |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
705 } |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
706 |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
707 return rc; |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
708 |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
709 #else |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
710 |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
711 ngx_fd_t fd; |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
712 |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
713 if (of->disable_symlinks == NGX_DISABLE_SYMLINKS_OFF) { |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
714 |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
715 rc = ngx_file_info(name->data, fi); |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
716 |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
717 if (rc == NGX_FILE_ERROR) { |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
718 of->err = ngx_errno; |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
719 of->failed = ngx_file_info_n; |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
720 return NGX_FILE_ERROR; |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
721 } |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
722 |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
723 return rc; |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
724 } |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
725 |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
726 fd = ngx_open_file_wrapper(name, of, NGX_FILE_RDONLY|NGX_FILE_NONBLOCK, |
4479
5e6436812c9a
Disable symlinks: cleanup error handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4477
diff
changeset
|
727 NGX_FILE_OPEN, 0, log); |
4477
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
728 |
4479
5e6436812c9a
Disable symlinks: cleanup error handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4477
diff
changeset
|
729 if (fd == NGX_INVALID_FILE) { |
4477
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
730 return NGX_FILE_ERROR; |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
731 } |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
732 |
4479
5e6436812c9a
Disable symlinks: cleanup error handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4477
diff
changeset
|
733 rc = ngx_fd_info(fd, fi); |
5e6436812c9a
Disable symlinks: cleanup error handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4477
diff
changeset
|
734 |
5e6436812c9a
Disable symlinks: cleanup error handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4477
diff
changeset
|
735 if (rc == NGX_FILE_ERROR) { |
4477
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
736 of->err = ngx_errno; |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
737 of->failed = ngx_fd_info_n; |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
738 } |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
739 |
4479
5e6436812c9a
Disable symlinks: cleanup error handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4477
diff
changeset
|
740 if (ngx_close_file(fd) == NGX_FILE_ERROR) { |
5e6436812c9a
Disable symlinks: cleanup error handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4477
diff
changeset
|
741 ngx_log_error(NGX_LOG_ALERT, log, ngx_errno, |
5e6436812c9a
Disable symlinks: cleanup error handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4477
diff
changeset
|
742 ngx_close_file_n " \"%V\" failed", name); |
5e6436812c9a
Disable symlinks: cleanup error handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4477
diff
changeset
|
743 } |
4477
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
744 |
4479
5e6436812c9a
Disable symlinks: cleanup error handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4477
diff
changeset
|
745 return rc; |
4477
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
746 #endif |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
747 } |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
748 |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
749 |
1453 | 750 static ngx_int_t |
4476
94ef9d25ec5b
Changed ngx_open_and_stat_file() to use ngx_str_t.
Andrey Belov <defan@nginx.com>
parents:
4412
diff
changeset
|
751 ngx_open_and_stat_file(ngx_str_t *name, ngx_open_file_info_t *of, |
94ef9d25ec5b
Changed ngx_open_and_stat_file() to use ngx_str_t.
Andrey Belov <defan@nginx.com>
parents:
4412
diff
changeset
|
752 ngx_log_t *log) |
1453 | 753 { |
754 ngx_fd_t fd; | |
755 ngx_file_info_t fi; | |
756 | |
2070 | 757 if (of->fd != NGX_INVALID_FILE) { |
1453 | 758 |
4479
5e6436812c9a
Disable symlinks: cleanup error handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4477
diff
changeset
|
759 if (ngx_file_info_wrapper(name, of, &fi, log) == NGX_FILE_ERROR) { |
4477
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
760 of->fd = NGX_INVALID_FILE; |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
761 return NGX_ERROR; |
1453 | 762 } |
763 | |
2070 | 764 if (of->uniq == ngx_file_uniq(&fi)) { |
2069
23930ccd2642
use ngx_file_info() and test uniq if file is already open
Igor Sysoev <igor@sysoev.ru>
parents:
2063
diff
changeset
|
765 goto done; |
23930ccd2642
use ngx_file_info() and test uniq if file is already open
Igor Sysoev <igor@sysoev.ru>
parents:
2063
diff
changeset
|
766 } |
1453 | 767 |
2070 | 768 } else if (of->test_dir) { |
769 | |
4479
5e6436812c9a
Disable symlinks: cleanup error handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4477
diff
changeset
|
770 if (ngx_file_info_wrapper(name, of, &fi, log) == NGX_FILE_ERROR) { |
4477
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
771 of->fd = NGX_INVALID_FILE; |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
772 return NGX_ERROR; |
2070 | 773 } |
774 | |
2460
225fa4abd76f
test ngx_file_info() result, the bug has been introduced in r2070
Igor Sysoev <igor@sysoev.ru>
parents:
2246
diff
changeset
|
775 if (ngx_is_dir(&fi)) { |
2069
23930ccd2642
use ngx_file_info() and test uniq if file is already open
Igor Sysoev <igor@sysoev.ru>
parents:
2063
diff
changeset
|
776 goto done; |
1453 | 777 } |
778 } | |
779 | |
2072 | 780 if (!of->log) { |
3497
ac281bc4c187
use non-blocking open() not to hang on FIFO files, etc.
Igor Sysoev <igor@sysoev.ru>
parents:
3178
diff
changeset
|
781 |
ac281bc4c187
use non-blocking open() not to hang on FIFO files, etc.
Igor Sysoev <igor@sysoev.ru>
parents:
3178
diff
changeset
|
782 /* |
ac281bc4c187
use non-blocking open() not to hang on FIFO files, etc.
Igor Sysoev <igor@sysoev.ru>
parents:
3178
diff
changeset
|
783 * Use non-blocking open() not to hang on FIFO files, etc. |
ac281bc4c187
use non-blocking open() not to hang on FIFO files, etc.
Igor Sysoev <igor@sysoev.ru>
parents:
3178
diff
changeset
|
784 * This flag has no effect on a regular files. |
ac281bc4c187
use non-blocking open() not to hang on FIFO files, etc.
Igor Sysoev <igor@sysoev.ru>
parents:
3178
diff
changeset
|
785 */ |
ac281bc4c187
use non-blocking open() not to hang on FIFO files, etc.
Igor Sysoev <igor@sysoev.ru>
parents:
3178
diff
changeset
|
786 |
4477
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
787 fd = ngx_open_file_wrapper(name, of, NGX_FILE_RDONLY|NGX_FILE_NONBLOCK, |
4479
5e6436812c9a
Disable symlinks: cleanup error handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4477
diff
changeset
|
788 NGX_FILE_OPEN, 0, log); |
2072 | 789 |
790 } else { | |
4477
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
791 fd = ngx_open_file_wrapper(name, of, NGX_FILE_APPEND, |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
792 NGX_FILE_CREATE_OR_OPEN, |
4479
5e6436812c9a
Disable symlinks: cleanup error handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4477
diff
changeset
|
793 NGX_FILE_DEFAULT_ACCESS, log); |
2072 | 794 } |
1453 | 795 |
796 if (fd == NGX_INVALID_FILE) { | |
4477
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
797 of->fd = NGX_INVALID_FILE; |
7033faf6dc3c
Added disable_symlinks directive.
Andrey Belov <defan@nginx.com>
parents:
4476
diff
changeset
|
798 return NGX_ERROR; |
1453 | 799 } |
800 | |
801 if (ngx_fd_info(fd, &fi) == NGX_FILE_ERROR) { | |
802 ngx_log_error(NGX_LOG_CRIT, log, ngx_errno, | |
4476
94ef9d25ec5b
Changed ngx_open_and_stat_file() to use ngx_str_t.
Andrey Belov <defan@nginx.com>
parents:
4412
diff
changeset
|
803 ngx_fd_info_n " \"%V\" failed", name); |
1453 | 804 |
805 if (ngx_close_file(fd) == NGX_FILE_ERROR) { | |
806 ngx_log_error(NGX_LOG_ALERT, log, ngx_errno, | |
4476
94ef9d25ec5b
Changed ngx_open_and_stat_file() to use ngx_str_t.
Andrey Belov <defan@nginx.com>
parents:
4412
diff
changeset
|
807 ngx_close_file_n " \"%V\" failed", name); |
1453 | 808 } |
809 | |
2069
23930ccd2642
use ngx_file_info() and test uniq if file is already open
Igor Sysoev <igor@sysoev.ru>
parents:
2063
diff
changeset
|
810 of->fd = NGX_INVALID_FILE; |
23930ccd2642
use ngx_file_info() and test uniq if file is already open
Igor Sysoev <igor@sysoev.ru>
parents:
2063
diff
changeset
|
811 |
1453 | 812 return NGX_ERROR; |
813 } | |
814 | |
815 if (ngx_is_dir(&fi)) { | |
816 if (ngx_close_file(fd) == NGX_FILE_ERROR) { | |
817 ngx_log_error(NGX_LOG_ALERT, log, ngx_errno, | |
4476
94ef9d25ec5b
Changed ngx_open_and_stat_file() to use ngx_str_t.
Andrey Belov <defan@nginx.com>
parents:
4412
diff
changeset
|
818 ngx_close_file_n " \"%V\" failed", name); |
1453 | 819 } |
820 | |
2069
23930ccd2642
use ngx_file_info() and test uniq if file is already open
Igor Sysoev <igor@sysoev.ru>
parents:
2063
diff
changeset
|
821 of->fd = NGX_INVALID_FILE; |
23930ccd2642
use ngx_file_info() and test uniq if file is already open
Igor Sysoev <igor@sysoev.ru>
parents:
2063
diff
changeset
|
822 |
23930ccd2642
use ngx_file_info() and test uniq if file is already open
Igor Sysoev <igor@sysoev.ru>
parents:
2063
diff
changeset
|
823 } else { |
23930ccd2642
use ngx_file_info() and test uniq if file is already open
Igor Sysoev <igor@sysoev.ru>
parents:
2063
diff
changeset
|
824 of->fd = fd; |
2129 | 825 |
3178 | 826 if (of->read_ahead && ngx_file_size(&fi) > NGX_MIN_READ_AHEAD) { |
827 if (ngx_read_ahead(fd, of->read_ahead) == NGX_ERROR) { | |
828 ngx_log_error(NGX_LOG_ALERT, log, ngx_errno, | |
4476
94ef9d25ec5b
Changed ngx_open_and_stat_file() to use ngx_str_t.
Andrey Belov <defan@nginx.com>
parents:
4412
diff
changeset
|
829 ngx_read_ahead_n " \"%V\" failed", name); |
3178 | 830 } |
831 } | |
832 | |
2129 | 833 if (of->directio <= ngx_file_size(&fi)) { |
3164
b1b1775698d5
uniform ngx_directio_on/off() interface with other file functions
Igor Sysoev <igor@sysoev.ru>
parents:
2934
diff
changeset
|
834 if (ngx_directio_on(fd) == NGX_FILE_ERROR) { |
2129 | 835 ngx_log_error(NGX_LOG_ALERT, log, ngx_errno, |
4476
94ef9d25ec5b
Changed ngx_open_and_stat_file() to use ngx_str_t.
Andrey Belov <defan@nginx.com>
parents:
4412
diff
changeset
|
836 ngx_directio_on_n " \"%V\" failed", name); |
2231
8564129d49b6
*) handle unaligned file part for directio
Igor Sysoev <igor@sysoev.ru>
parents:
2129
diff
changeset
|
837 |
8564129d49b6
*) handle unaligned file part for directio
Igor Sysoev <igor@sysoev.ru>
parents:
2129
diff
changeset
|
838 } else { |
8564129d49b6
*) handle unaligned file part for directio
Igor Sysoev <igor@sysoev.ru>
parents:
2129
diff
changeset
|
839 of->is_directio = 1; |
2129 | 840 } |
841 } | |
1453 | 842 } |
843 | |
2069
23930ccd2642
use ngx_file_info() and test uniq if file is already open
Igor Sysoev <igor@sysoev.ru>
parents:
2063
diff
changeset
|
844 done: |
23930ccd2642
use ngx_file_info() and test uniq if file is already open
Igor Sysoev <igor@sysoev.ru>
parents:
2063
diff
changeset
|
845 |
1453 | 846 of->uniq = ngx_file_uniq(&fi); |
847 of->mtime = ngx_file_mtime(&fi); | |
848 of->size = ngx_file_size(&fi); | |
3899
e7cd13b7f759
Use more precise stat.st_blocks to account cache size on Unix
Igor Sysoev <igor@sysoev.ru>
parents:
3497
diff
changeset
|
849 of->fs_size = ngx_file_fs_size(&fi); |
1453 | 850 of->is_dir = ngx_is_dir(&fi); |
851 of->is_file = ngx_is_file(&fi); | |
852 of->is_link = ngx_is_link(&fi); | |
853 of->is_exec = ngx_is_exec(&fi); | |
854 | |
855 return NGX_OK; | |
856 } | |
857 | |
858 | |
1775 | 859 /* |
860 * we ignore any possible event setting error and | |
861 * fallback to usual periodic file retests | |
862 */ | |
863 | |
864 static void | |
865 ngx_open_file_add_event(ngx_open_file_cache_t *cache, | |
866 ngx_cached_open_file_t *file, ngx_open_file_info_t *of, ngx_log_t *log) | |
867 { | |
868 ngx_open_file_cache_event_t *fev; | |
869 | |
870 if (!(ngx_event_flags & NGX_USE_VNODE_EVENT) | |
871 || !of->events | |
872 || file->event | |
873 || of->fd == NGX_INVALID_FILE | |
874 || file->uses < of->min_uses) | |
875 { | |
876 return; | |
877 } | |
878 | |
2070 | 879 file->use_event = 0; |
880 | |
1775 | 881 file->event = ngx_calloc(sizeof(ngx_event_t), log); |
882 if (file->event== NULL) { | |
883 return; | |
884 } | |
885 | |
886 fev = ngx_alloc(sizeof(ngx_open_file_cache_event_t), log); | |
887 if (fev == NULL) { | |
888 ngx_free(file->event); | |
889 file->event = NULL; | |
890 return; | |
891 } | |
892 | |
893 fev->fd = of->fd; | |
894 fev->file = file; | |
895 fev->cache = cache; | |
896 | |
897 file->event->handler = ngx_open_file_cache_remove; | |
898 file->event->data = fev; | |
899 | |
900 /* | |
901 * although vnode event may be called while ngx_cycle->poll | |
902 * destruction, however, cleanup procedures are run before any | |
903 * memory freeing and events will be canceled. | |
904 */ | |
905 | |
906 file->event->log = ngx_cycle->log; | |
907 | |
908 if (ngx_add_event(file->event, NGX_VNODE_EVENT, NGX_ONESHOT_EVENT) | |
909 != NGX_OK) | |
910 { | |
911 ngx_free(file->event->data); | |
912 ngx_free(file->event); | |
913 file->event = NULL; | |
914 return; | |
915 } | |
916 | |
917 /* | |
2071 | 918 * we do not set file->use_event here because there may be a race |
919 * condition: a file may be deleted between opening the file and | |
920 * adding event, so we rely upon event notification only after | |
921 * one file revalidation on next file access | |
1775 | 922 */ |
923 | |
924 return; | |
925 } | |
926 | |
927 | |
1453 | 928 static void |
929 ngx_open_file_cleanup(void *data) | |
930 { | |
931 ngx_open_file_cache_cleanup_t *c = data; | |
932 | |
933 c->file->count--; | |
934 | |
1772 | 935 ngx_close_cached_file(c->cache, c->file, c->min_uses, c->log); |
1453 | 936 |
937 /* drop one or two expired open files */ | |
938 ngx_expire_old_cached_files(c->cache, 1, c->log); | |
939 } | |
940 | |
941 | |
942 static void | |
943 ngx_close_cached_file(ngx_open_file_cache_t *cache, | |
1772 | 944 ngx_cached_open_file_t *file, ngx_uint_t min_uses, ngx_log_t *log) |
1453 | 945 { |
1772 | 946 ngx_log_debug5(NGX_LOG_DEBUG_CORE, log, 0, |
947 "close cached open file: %s, fd:%d, c:%d, u:%d, %d", | |
948 file->name, file->fd, file->count, file->uses, file->close); | |
1453 | 949 |
950 if (!file->close) { | |
951 | |
952 file->accessed = ngx_time(); | |
953 | |
1765 | 954 ngx_queue_remove(&file->queue); |
1453 | 955 |
1765 | 956 ngx_queue_insert_head(&cache->expire_queue, &file->queue); |
1453 | 957 |
1772 | 958 if (file->uses >= min_uses || file->count) { |
959 return; | |
960 } | |
1453 | 961 } |
962 | |
1775 | 963 ngx_open_file_del_event(file); |
1453 | 964 |
965 if (file->count) { | |
966 return; | |
967 } | |
968 | |
1772 | 969 if (file->fd != NGX_INVALID_FILE) { |
970 | |
971 if (ngx_close_file(file->fd) == NGX_FILE_ERROR) { | |
972 ngx_log_error(NGX_LOG_ALERT, log, ngx_errno, | |
973 ngx_close_file_n " \"%s\" failed", file->name); | |
974 } | |
975 | |
976 file->fd = NGX_INVALID_FILE; | |
977 } | |
978 | |
979 if (!file->close) { | |
980 return; | |
1453 | 981 } |
982 | |
983 ngx_free(file->name); | |
984 ngx_free(file); | |
985 } | |
986 | |
987 | |
988 static void | |
1775 | 989 ngx_open_file_del_event(ngx_cached_open_file_t *file) |
990 { | |
991 if (file->event == NULL) { | |
992 return; | |
993 } | |
994 | |
995 (void) ngx_del_event(file->event, NGX_VNODE_EVENT, | |
996 file->count ? NGX_FLUSH_EVENT : NGX_CLOSE_EVENT); | |
997 | |
998 ngx_free(file->event->data); | |
999 ngx_free(file->event); | |
1000 file->event = NULL; | |
1001 file->use_event = 0; | |
1002 } | |
1003 | |
1004 | |
1005 static void | |
1453 | 1006 ngx_expire_old_cached_files(ngx_open_file_cache_t *cache, ngx_uint_t n, |
1007 ngx_log_t *log) | |
1008 { | |
1009 time_t now; | |
1765 | 1010 ngx_queue_t *q; |
1453 | 1011 ngx_cached_open_file_t *file; |
1012 | |
1013 now = ngx_time(); | |
1014 | |
1015 /* | |
1016 * n == 1 deletes one or two inactive files | |
1017 * n == 0 deletes least recently used file by force | |
1018 * and one or two inactive files | |
1019 */ | |
1020 | |
1021 while (n < 3) { | |
1022 | |
1765 | 1023 if (ngx_queue_empty(&cache->expire_queue)) { |
1453 | 1024 return; |
1025 } | |
1026 | |
1765 | 1027 q = ngx_queue_last(&cache->expire_queue); |
1028 | |
1029 file = ngx_queue_data(q, ngx_cached_open_file_t, queue); | |
1030 | |
1453 | 1031 if (n++ != 0 && now - file->accessed <= cache->inactive) { |
1032 return; | |
1033 } | |
1034 | |
1765 | 1035 ngx_queue_remove(q); |
1453 | 1036 |
1037 ngx_rbtree_delete(&cache->rbtree, &file->node); | |
1038 | |
1039 cache->current--; | |
1040 | |
1041 ngx_log_debug1(NGX_LOG_DEBUG_CORE, log, 0, | |
1042 "expire cached open file: %s", file->name); | |
1043 | |
1044 if (!file->err && !file->is_dir) { | |
1045 file->close = 1; | |
1772 | 1046 ngx_close_cached_file(cache, file, 0, log); |
1453 | 1047 |
1048 } else { | |
1049 ngx_free(file->name); | |
1050 ngx_free(file); | |
1051 } | |
1052 } | |
1053 } | |
1054 | |
1055 | |
1056 static void | |
1057 ngx_open_file_cache_rbtree_insert_value(ngx_rbtree_node_t *temp, | |
1058 ngx_rbtree_node_t *node, ngx_rbtree_node_t *sentinel) | |
1059 { | |
1060 ngx_rbtree_node_t **p; | |
1061 ngx_cached_open_file_t *file, *file_temp; | |
1062 | |
1063 for ( ;; ) { | |
1064 | |
1065 if (node->key < temp->key) { | |
1066 | |
1067 p = &temp->left; | |
1068 | |
1069 } else if (node->key > temp->key) { | |
1070 | |
1071 p = &temp->right; | |
1072 | |
1073 } else { /* node->key == temp->key */ | |
1074 | |
1075 file = (ngx_cached_open_file_t *) node; | |
1076 file_temp = (ngx_cached_open_file_t *) temp; | |
1077 | |
1078 p = (ngx_strcmp(file->name, file_temp->name) < 0) | |
1079 ? &temp->left : &temp->right; | |
1080 } | |
1081 | |
1082 if (*p == sentinel) { | |
1083 break; | |
1084 } | |
1085 | |
1086 temp = *p; | |
1087 } | |
1088 | |
1089 *p = node; | |
1090 node->parent = temp; | |
1091 node->left = sentinel; | |
1092 node->right = sentinel; | |
1093 ngx_rbt_red(node); | |
1094 } | |
1095 | |
1096 | |
1775 | 1097 static ngx_cached_open_file_t * |
1098 ngx_open_file_lookup(ngx_open_file_cache_t *cache, ngx_str_t *name, | |
1099 uint32_t hash) | |
1100 { | |
1101 ngx_int_t rc; | |
1102 ngx_rbtree_node_t *node, *sentinel; | |
1103 ngx_cached_open_file_t *file; | |
1104 | |
1105 node = cache->rbtree.root; | |
1106 sentinel = cache->rbtree.sentinel; | |
1107 | |
1108 while (node != sentinel) { | |
1109 | |
1110 if (hash < node->key) { | |
1111 node = node->left; | |
1112 continue; | |
1113 } | |
1114 | |
1115 if (hash > node->key) { | |
1116 node = node->right; | |
1117 continue; | |
1118 } | |
1119 | |
1120 /* hash == node->key */ | |
1121 | |
1122 do { | |
1123 file = (ngx_cached_open_file_t *) node; | |
1124 | |
1125 rc = ngx_strcmp(name->data, file->name); | |
1126 | |
1127 if (rc == 0) { | |
1128 return file; | |
1129 } | |
1130 | |
1131 node = (rc < 0) ? node->left : node->right; | |
1132 | |
1133 } while (node != sentinel && hash == node->key); | |
1134 | |
1135 break; | |
1136 } | |
1137 | |
1138 return NULL; | |
1139 } | |
1140 | |
1141 | |
1453 | 1142 static void |
1143 ngx_open_file_cache_remove(ngx_event_t *ev) | |
1144 { | |
1145 ngx_cached_open_file_t *file; | |
1146 ngx_open_file_cache_event_t *fev; | |
1147 | |
1148 fev = ev->data; | |
1149 file = fev->file; | |
1150 | |
1765 | 1151 ngx_queue_remove(&file->queue); |
1453 | 1152 |
1153 ngx_rbtree_delete(&fev->cache->rbtree, &file->node); | |
1154 | |
1155 fev->cache->current--; | |
1156 | |
1157 /* NGX_ONESHOT_EVENT was already deleted */ | |
1158 file->event = NULL; | |
2070 | 1159 file->use_event = 0; |
1453 | 1160 |
1161 file->close = 1; | |
1162 | |
1772 | 1163 ngx_close_cached_file(fev->cache, file, 0, ev->log); |
1453 | 1164 |
1165 /* free memory only when fev->cache and fev->file are already not needed */ | |
1166 | |
1167 ngx_free(ev->data); | |
1168 ngx_free(ev); | |
1169 } |