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[stat_cache] store entries without trailing slash 

(no more duplication of dir entries with and without trailing slash)
This commit is contained in:
Glenn Strauss 2019-04-28 14:33:58 -04:00
parent 020a83c265
commit baa5f04335
1 changed files with 22 additions and 3 deletions
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25
src/stat_cache.c
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@ -589,13 +589,24 @@ handler_t stat_cache_get_entry(server *srv, connection *con, buffer *name, stat_
*ret_sce = NULL;
/* consistency: ensure lookup name does not end in '/' unless root "/"
* (but use full path given with stat(), even with trailing '/') */
int final_slash = 0;
size_t len = buffer_string_length(name);
force_assert(0 != len);
if (name->ptr[len-1] == '/') { final_slash = 1; if (0 == --len) len = 1; }
/* Note: paths are expected to be normalized before calling stat_cache,
* e.g. without repeated '/' */
if (name->ptr[0] != '/') return HANDLER_ERROR;
/*
* check if the directory for this file has changed
*/
sc = srv->stat_cache;
file_ndx = hashme(CONST_BUF_LEN(name));
file_ndx = hashme(name->ptr, len);
sc->files = splaytree_splay(sc->files, file_ndx);
if (sc->files && (sc->files->key == file_ndx)) {
@ -606,9 +617,13 @@ handler_t stat_cache_get_entry(server *srv, connection *con, buffer *name, stat_
/* check if the name is the same, we might have a collision */
if (buffer_is_equal(name, sce->name)) {
if (buffer_is_equal_string(sce->name, name->ptr, len)) {
if (srv->srvconf.stat_cache_engine == STAT_CACHE_ENGINE_SIMPLE) {
if (sce->stat_ts == srv->cur_ts) {
if (final_slash && !S_ISDIR(sce->st.st_mode)) {
errno = ENOTDIR;
return HANDLER_ERROR;
}
*ret_sce = sce;
return HANDLER_GO_ON;
}
@ -626,6 +641,10 @@ handler_t stat_cache_get_entry(server *srv, connection *con, buffer *name, stat_
case HANDLER_GO_ON:
break;
case HANDLER_FINISHED:
if (final_slash && !S_ISDIR(sce->st.st_mode)) {
errno = ENOTDIR;
return HANDLER_ERROR;
}
*ret_sce = sce;
return HANDLER_GO_ON;
case HANDLER_ERROR:
@ -668,7 +687,7 @@ handler_t stat_cache_get_entry(server *srv, connection *con, buffer *name, stat_
if (NULL == sce) {
sce = stat_cache_entry_init();
buffer_copy_buffer(sce->name, name);
buffer_copy_string_len(sce->name, name->ptr, len);
/* already splayed file_ndx */
if ((NULL != sc->files) && (sc->files->key == file_ndx)) {