3 * Copyright (C) Igor Sysoev
4 * Copyright (C) Nginx, Inc.
8 #include <ngx_config.h>
12 static ngx_int_t ngx_test_full_name(ngx_str_t *name);
15 static ngx_atomic_t temp_number = 0;
16 ngx_atomic_t *ngx_temp_number = &temp_number;
17 ngx_atomic_int_t ngx_random_number = 123456;
21 ngx_get_full_name(ngx_pool_t *pool, ngx_str_t *prefix, ngx_str_t *name)
27 rc = ngx_test_full_name(name);
43 n = ngx_pnalloc(pool, len + name->len + 1);
48 p = ngx_cpymem(n, prefix->data, len);
49 ngx_cpystrn(p, name->data, name->len + 1);
59 ngx_test_full_name(ngx_str_t *name)
79 if ((c0 >= 'a' && c0 <= 'z')) {
98 if (name->data[0] == '/') {
109 ngx_write_chain_to_temp_file(ngx_temp_file_t *tf, ngx_chain_t *chain)
113 if (tf->file.fd == NGX_INVALID_FILE) {
114 rc = ngx_create_temp_file(&tf->file, tf->path, tf->pool,
115 tf->persistent, tf->clean, tf->access);
122 ngx_log_error(tf->log_level, tf->file.log, 0, "%s %V",
123 tf->warn, &tf->file.name);
127 #if (NGX_THREADS && NGX_HAVE_PWRITEV)
129 if (tf->thread_write) {
130 return ngx_thread_write_chain_to_file(&tf->file, chain, tf->offset,
136 return ngx_write_chain_to_file(&tf->file, chain, tf->offset, tf->pool);
141 ngx_create_temp_file(ngx_file_t *file, ngx_path_t *path, ngx_pool_t *pool,
142 ngx_uint_t persistent, ngx_uint_t clean, ngx_uint_t access)
150 ngx_pool_cleanup_t *cln;
151 ngx_pool_cleanup_file_t *clnf;
153 if (file->name.len) {
164 file->name.len = name.len + 1 + levels + 10;
166 file->name.data = ngx_pnalloc(pool, file->name.len + 1);
167 if (file->name.data == NULL) {
172 for (i = 0; i < file->name.len; i++) {
173 file->name.data[i] = 'X';
177 p = ngx_cpymem(file->name.data, name.data, name.len);
185 n = (uint32_t) ngx_next_temp_number(0);
187 cln = ngx_pool_cleanup_add(pool, sizeof(ngx_pool_cleanup_file_t));
193 (void) ngx_sprintf(p, "%010uD%Z", n);
196 ngx_create_hashed_filename(path, file->name.data, file->name.len);
199 ngx_log_debug1(NGX_LOG_DEBUG_CORE, file->log, 0,
200 "hashed path: %s", file->name.data);
202 file->fd = ngx_open_tempfile(file->name.data, persistent, access);
204 ngx_log_debug1(NGX_LOG_DEBUG_CORE, file->log, 0,
205 "temp fd:%d", file->fd);
207 if (file->fd != NGX_INVALID_FILE) {
209 cln->handler = clean ? ngx_pool_delete_file : ngx_pool_cleanup_file;
213 clnf->name = file->name.data;
214 clnf->log = pool->log;
221 if (err == NGX_EEXIST_FILE) {
222 n = (uint32_t) ngx_next_temp_number(1);
226 if ((path->level[0] == 0) || (err != NGX_ENOPATH)) {
227 ngx_log_error(NGX_LOG_CRIT, file->log, err,
228 ngx_open_tempfile_n " \"%s\" failed",
233 if (ngx_create_path(file, path) == NGX_ERROR) {
241 ngx_create_hashed_filename(ngx_path_t *path, u_char *file, size_t len)
246 i = path->name.len + 1;
248 file[path->name.len + path->len] = '/';
250 for (n = 0; n < NGX_MAX_PATH_LEVEL; n++) {
251 level = path->level[n];
259 ngx_memcpy(&file[i], &file[len], level);
266 ngx_create_path(ngx_file_t *file, ngx_path_t *path)
272 pos = path->name.len;
274 for (i = 0; i < NGX_MAX_PATH_LEVEL; i++) {
275 if (path->level[i] == 0) {
279 pos += path->level[i] + 1;
281 file->name.data[pos] = '\0';
283 ngx_log_debug1(NGX_LOG_DEBUG_CORE, file->log, 0,
284 "temp file: \"%s\"", file->name.data);
286 if (ngx_create_dir(file->name.data, 0700) == NGX_FILE_ERROR) {
288 if (err != NGX_EEXIST) {
289 ngx_log_error(NGX_LOG_CRIT, file->log, err,
290 ngx_create_dir_n " \"%s\" failed",
296 file->name.data[pos] = '/';
304 ngx_create_full_path(u_char *dir, ngx_uint_t access)
317 for ( /* void */ ; *p; p++) {
326 if (ngx_create_dir(dir, access) == NGX_FILE_ERROR) {
348 ngx_next_temp_number(ngx_uint_t collision)
350 ngx_atomic_uint_t n, add;
352 add = collision ? ngx_random_number : 1;
354 n = ngx_atomic_fetch_add(ngx_temp_number, add);
361 ngx_conf_set_path_slot(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
368 ngx_path_t *path, **slot;
370 slot = (ngx_path_t **) (p + cmd->offset);
373 return "is duplicate";
376 path = ngx_pcalloc(cf->pool, sizeof(ngx_path_t));
378 return NGX_CONF_ERROR;
381 value = cf->args->elts;
383 path->name = value[1];
385 if (path->name.data[path->name.len - 1] == '/') {
389 if (ngx_conf_full_name(cf->cycle, &path->name, 0) != NGX_OK) {
390 return NGX_CONF_ERROR;
393 path->conf_file = cf->conf_file->file.name.data;
394 path->line = cf->conf_file->line;
396 for (i = 0, n = 2; n < cf->args->nelts; i++, n++) {
397 level = ngx_atoi(value[n].data, value[n].len);
398 if (level == NGX_ERROR || level == 0) {
399 return "invalid value";
402 path->level[i] = level;
403 path->len += level + 1;
406 if (path->len > 10 + i) {
407 return "invalid value";
412 if (ngx_add_path(cf, slot) == NGX_ERROR) {
413 return NGX_CONF_ERROR;
421 ngx_conf_merge_path_value(ngx_conf_t *cf, ngx_path_t **path, ngx_path_t *prev,
422 ngx_path_init_t *init)
435 *path = ngx_pcalloc(cf->pool, sizeof(ngx_path_t));
437 return NGX_CONF_ERROR;
440 (*path)->name = init->name;
442 if (ngx_conf_full_name(cf->cycle, &(*path)->name, 0) != NGX_OK) {
443 return NGX_CONF_ERROR;
446 for (i = 0; i < NGX_MAX_PATH_LEVEL; i++) {
447 (*path)->level[i] = init->level[i];
448 (*path)->len += init->level[i] + (init->level[i] ? 1 : 0);
451 if (ngx_add_path(cf, path) != NGX_OK) {
452 return NGX_CONF_ERROR;
460 ngx_conf_set_access_slot(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
466 ngx_uint_t i, right, shift, *access, user;
468 access = (ngx_uint_t *) (confp + cmd->offset);
470 if (*access != NGX_CONF_UNSET_UINT) {
471 return "is duplicate";
474 value = cf->args->elts;
479 for (i = 1; i < cf->args->nelts; i++) {
483 if (ngx_strncmp(p, "user:", sizeof("user:") - 1) == 0) {
485 p += sizeof("user:") - 1;
488 } else if (ngx_strncmp(p, "group:", sizeof("group:") - 1) == 0) {
490 p += sizeof("group:") - 1;
492 } else if (ngx_strncmp(p, "all:", sizeof("all:") - 1) == 0) {
494 p += sizeof("all:") - 1;
500 if (ngx_strcmp(p, "rw") == 0) {
503 } else if (ngx_strcmp(p, "r") == 0) {
510 *access |= right << shift;
519 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "invalid value \"%V\"", &value[i]);
521 return NGX_CONF_ERROR;
526 ngx_add_path(ngx_conf_t *cf, ngx_path_t **slot)
529 ngx_path_t *path, **p;
533 p = cf->cycle->paths.elts;
534 for (i = 0; i < cf->cycle->paths.nelts; i++) {
535 if (p[i]->name.len == path->name.len
536 && ngx_strcmp(p[i]->name.data, path->name.data) == 0)
538 if (p[i]->data != path->data) {
539 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
540 "the same path name \"%V\" "
541 "used in %s:%ui and",
542 &p[i]->name, p[i]->conf_file, p[i]->line);
546 for (n = 0; n < NGX_MAX_PATH_LEVEL; n++) {
547 if (p[i]->level[n] != path->level[n]) {
548 if (path->conf_file == NULL) {
549 if (p[i]->conf_file == NULL) {
550 ngx_log_error(NGX_LOG_EMERG, cf->log, 0,
551 "the default path name \"%V\" has "
552 "the same name as another default path, "
553 "but the different levels, you need to "
554 "redefine one of them in http section",
559 ngx_log_error(NGX_LOG_EMERG, cf->log, 0,
560 "the path name \"%V\" in %s:%ui has "
561 "the same name as default path, but "
562 "the different levels, you need to "
563 "define default path in http section",
564 &p[i]->name, p[i]->conf_file, p[i]->line);
568 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
569 "the same path name \"%V\" in %s:%ui "
570 "has the different levels than",
571 &p[i]->name, p[i]->conf_file, p[i]->line);
575 if (p[i]->level[n] == 0) {
586 p = ngx_array_push(&cf->cycle->paths);
598 ngx_create_paths(ngx_cycle_t *cycle, ngx_uid_t user)
604 path = cycle->paths.elts;
605 for (i = 0; i < cycle->paths.nelts; i++) {
607 if (ngx_create_dir(path[i]->name.data, 0700) == NGX_FILE_ERROR) {
609 if (err != NGX_EEXIST) {
610 ngx_log_error(NGX_LOG_EMERG, cycle->log, err,
611 ngx_create_dir_n " \"%s\" failed",
617 if (user == (ngx_uid_t) NGX_CONF_UNSET_UINT) {
625 if (ngx_file_info((const char *) path[i]->name.data, &fi)
628 ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno,
629 ngx_file_info_n " \"%s\" failed", path[i]->name.data);
633 if (fi.st_uid != user) {
634 if (chown((const char *) path[i]->name.data, user, -1) == -1) {
635 ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno,
636 "chown(\"%s\", %d) failed",
637 path[i]->name.data, user);
642 if ((fi.st_mode & (S_IRUSR|S_IWUSR|S_IXUSR))
643 != (S_IRUSR|S_IWUSR|S_IXUSR))
645 fi.st_mode |= (S_IRUSR|S_IWUSR|S_IXUSR);
647 if (chmod((const char *) path[i]->name.data, fi.st_mode) == -1) {
648 ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno,
649 "chmod() \"%s\" failed", path[i]->name.data);
662 ngx_ext_rename_file(ngx_str_t *src, ngx_str_t *to, ngx_ext_rename_file_t *ext)
671 if (ngx_change_file_access(src->data, ext->access) == NGX_FILE_ERROR) {
672 ngx_log_error(NGX_LOG_CRIT, ext->log, ngx_errno,
673 ngx_change_file_access_n " \"%s\" failed", src->data);
681 if (ext->time != -1) {
682 if (ngx_set_file_time(src->data, ext->fd, ext->time) != NGX_OK) {
683 ngx_log_error(NGX_LOG_CRIT, ext->log, ngx_errno,
684 ngx_set_file_time_n " \"%s\" failed", src->data);
690 if (ngx_rename_file(src->data, to->data) != NGX_FILE_ERROR) {
696 if (err == NGX_ENOPATH) {
698 if (!ext->create_path) {
702 err = ngx_create_full_path(to->data, ngx_dir_access(ext->path_access));
705 ngx_log_error(NGX_LOG_CRIT, ext->log, err,
706 ngx_create_dir_n " \"%s\" failed", to->data);
711 if (ngx_rename_file(src->data, to->data) != NGX_FILE_ERROR) {
720 if (err == NGX_EEXIST || err == NGX_EEXIST_FILE) {
721 err = ngx_win32_rename_file(src, to, ext->log);
730 if (err == NGX_EXDEV) {
734 cf.access = ext->access;
738 name = ngx_alloc(to->len + 1 + 10 + 1, ext->log);
743 (void) ngx_sprintf(name, "%*s.%010uD%Z", to->len, to->data,
744 (uint32_t) ngx_next_temp_number(0));
746 if (ngx_copy_file(src->data, name, &cf) == NGX_OK) {
748 if (ngx_rename_file(name, to->data) != NGX_FILE_ERROR) {
751 if (ngx_delete_file(src->data) == NGX_FILE_ERROR) {
752 ngx_log_error(NGX_LOG_CRIT, ext->log, ngx_errno,
753 ngx_delete_file_n " \"%s\" failed",
761 ngx_log_error(NGX_LOG_CRIT, ext->log, ngx_errno,
762 ngx_rename_file_n " \"%s\" to \"%s\" failed",
765 if (ngx_delete_file(name) == NGX_FILE_ERROR) {
766 ngx_log_error(NGX_LOG_CRIT, ext->log, ngx_errno,
767 ngx_delete_file_n " \"%s\" failed", name);
779 if (ext->delete_file) {
780 if (ngx_delete_file(src->data) == NGX_FILE_ERROR) {
781 ngx_log_error(NGX_LOG_CRIT, ext->log, ngx_errno,
782 ngx_delete_file_n " \"%s\" failed", src->data);
787 ngx_log_error(NGX_LOG_CRIT, ext->log, err,
788 ngx_rename_file_n " \"%s\" to \"%s\" failed",
789 src->data, to->data);
797 ngx_copy_file(u_char *from, u_char *to, ngx_copy_file_t *cf)
809 nfd = NGX_INVALID_FILE;
811 fd = ngx_open_file(from, NGX_FILE_RDONLY, NGX_FILE_OPEN, 0);
813 if (fd == NGX_INVALID_FILE) {
814 ngx_log_error(NGX_LOG_CRIT, cf->log, ngx_errno,
815 ngx_open_file_n " \"%s\" failed", from);
819 if (cf->size != -1) {
823 if (ngx_fd_info(fd, &fi) == NGX_FILE_ERROR) {
824 ngx_log_error(NGX_LOG_ALERT, cf->log, ngx_errno,
825 ngx_fd_info_n " \"%s\" failed", from);
830 size = ngx_file_size(&fi);
833 len = cf->buf_size ? cf->buf_size : 65536;
835 if ((off_t) len > size) {
839 buf = ngx_alloc(len, cf->log);
844 nfd = ngx_open_file(to, NGX_FILE_WRONLY, NGX_FILE_CREATE_OR_OPEN,
847 if (nfd == NGX_INVALID_FILE) {
848 ngx_log_error(NGX_LOG_CRIT, cf->log, ngx_errno,
849 ngx_open_file_n " \"%s\" failed", to);
855 if ((off_t) len > size) {
859 n = ngx_read_fd(fd, buf, len);
862 ngx_log_error(NGX_LOG_ALERT, cf->log, ngx_errno,
863 ngx_read_fd_n " \"%s\" failed", from);
867 if ((size_t) n != len) {
868 ngx_log_error(NGX_LOG_ALERT, cf->log, 0,
869 ngx_read_fd_n " has read only %z of %O from %s",
874 n = ngx_write_fd(nfd, buf, len);
877 ngx_log_error(NGX_LOG_ALERT, cf->log, ngx_errno,
878 ngx_write_fd_n " \"%s\" failed", to);
882 if ((size_t) n != len) {
883 ngx_log_error(NGX_LOG_ALERT, cf->log, 0,
884 ngx_write_fd_n " has written only %z of %O to %s",
892 if (cf->time != -1) {
893 if (ngx_set_file_time(to, nfd, cf->time) != NGX_OK) {
894 ngx_log_error(NGX_LOG_ALERT, cf->log, ngx_errno,
895 ngx_set_file_time_n " \"%s\" failed", to);
904 if (nfd != NGX_INVALID_FILE) {
905 if (ngx_close_file(nfd) == NGX_FILE_ERROR) {
906 ngx_log_error(NGX_LOG_ALERT, cf->log, ngx_errno,
907 ngx_close_file_n " \"%s\" failed", to);
911 if (fd != NGX_INVALID_FILE) {
912 if (ngx_close_file(fd) == NGX_FILE_ERROR) {
913 ngx_log_error(NGX_LOG_ALERT, cf->log, ngx_errno,
914 ngx_close_file_n " \"%s\" failed", from);
927 * ctx->init_handler() - see ctx->alloc
928 * ctx->file_handler() - file handler
929 * ctx->pre_tree_handler() - handler is called before entering directory
930 * ctx->post_tree_handler() - handler is called after leaving directory
931 * ctx->spec_handler() - special (socket, FIFO, etc.) file handler
933 * ctx->data - some data structure, it may be the same on all levels, or
934 * reallocated if ctx->alloc is nonzero
936 * ctx->alloc - a size of data structure that is allocated at every level
937 * and is initialized by ctx->init_handler()
941 * on fatal (memory) error handler must return NGX_ABORT to stop walking tree
945 ngx_walk_tree(ngx_tree_ctx_t *ctx, ngx_str_t *tree)
957 ngx_log_debug1(NGX_LOG_DEBUG_CORE, ctx->log, 0,
958 "walk tree \"%V\"", tree);
960 if (ngx_open_dir(tree, &dir) == NGX_ERROR) {
961 ngx_log_error(NGX_LOG_CRIT, ctx->log, ngx_errno,
962 ngx_open_dir_n " \"%s\" failed", tree->data);
969 data = ngx_alloc(ctx->alloc, ctx->log);
974 if (ctx->init_handler(data, prev) == NGX_ABORT) {
988 if (ngx_read_dir(&dir) == NGX_ERROR) {
991 if (err == NGX_ENOMOREFILES) {
995 ngx_log_error(NGX_LOG_CRIT, ctx->log, err,
996 ngx_read_dir_n " \"%s\" failed", tree->data);
1003 len = ngx_de_namelen(&dir);
1004 name = ngx_de_name(&dir);
1006 ngx_log_debug2(NGX_LOG_DEBUG_CORE, ctx->log, 0,
1007 "tree name %uz:\"%s\"", len, name);
1009 if (len == 1 && name[0] == '.') {
1013 if (len == 2 && name[0] == '.' && name[1] == '.') {
1017 file.len = tree->len + 1 + len;
1019 if (file.len + NGX_DIR_MASK_LEN > buf.len) {
1025 buf.len = tree->len + 1 + len + NGX_DIR_MASK_LEN;
1027 buf.data = ngx_alloc(buf.len + 1, ctx->log);
1028 if (buf.data == NULL) {
1033 p = ngx_cpymem(buf.data, tree->data, tree->len);
1035 ngx_memcpy(p, name, len + 1);
1037 file.data = buf.data;
1039 ngx_log_debug1(NGX_LOG_DEBUG_CORE, ctx->log, 0,
1040 "tree path \"%s\"", file.data);
1042 if (!dir.valid_info) {
1043 if (ngx_de_info(file.data, &dir) == NGX_FILE_ERROR) {
1044 ngx_log_error(NGX_LOG_CRIT, ctx->log, ngx_errno,
1045 ngx_de_info_n " \"%s\" failed", file.data);
1050 if (ngx_de_is_file(&dir)) {
1052 ngx_log_debug1(NGX_LOG_DEBUG_CORE, ctx->log, 0,
1053 "tree file \"%s\"", file.data);
1055 ctx->size = ngx_de_size(&dir);
1056 ctx->fs_size = ngx_de_fs_size(&dir);
1057 ctx->access = ngx_de_access(&dir);
1058 ctx->mtime = ngx_de_mtime(&dir);
1060 if (ctx->file_handler(ctx, &file) == NGX_ABORT) {
1064 } else if (ngx_de_is_dir(&dir)) {
1066 ngx_log_debug1(NGX_LOG_DEBUG_CORE, ctx->log, 0,
1067 "tree enter dir \"%s\"", file.data);
1069 ctx->access = ngx_de_access(&dir);
1070 ctx->mtime = ngx_de_mtime(&dir);
1072 rc = ctx->pre_tree_handler(ctx, &file);
1074 if (rc == NGX_ABORT) {
1078 if (rc == NGX_DECLINED) {
1079 ngx_log_debug1(NGX_LOG_DEBUG_CORE, ctx->log, 0,
1080 "tree skip dir \"%s\"", file.data);
1084 if (ngx_walk_tree(ctx, &file) == NGX_ABORT) {
1088 ctx->access = ngx_de_access(&dir);
1089 ctx->mtime = ngx_de_mtime(&dir);
1091 if (ctx->post_tree_handler(ctx, &file) == NGX_ABORT) {
1097 ngx_log_debug1(NGX_LOG_DEBUG_CORE, ctx->log, 0,
1098 "tree special \"%s\"", file.data);
1100 if (ctx->spec_handler(ctx, &file) == NGX_ABORT) {
1121 if (ngx_close_dir(&dir) == NGX_ERROR) {
1122 ngx_log_error(NGX_LOG_CRIT, ctx->log, ngx_errno,
1123 ngx_close_dir_n " \"%s\" failed", tree->data);