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authorJeremy Allison <jra@samba.org>2007-08-23 21:53:00 +0000
committerGerald (Jerry) Carter <jerry@samba.org>2007-10-10 12:30:13 -0500
commitf1041f98ced8ef50373ca37d541d7ca8b1d46638 (patch)
treeef7890e8ebad85a9751a26424fdbc79a8e41187a /source3/smbd
parenta689f6082b2c8ee82a794e742f904a990702859a (diff)
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r24639: Add parameter "directory name cache size" - parameterize
use of directory name cache, 100 by default. Will be needed to turn this off for *BSD systems. Jeremy. (This used to be commit bea8e9840fd65268e649f813eba10502b0c4d721)
Diffstat (limited to 'source3/smbd')
-rw-r--r--source3/smbd/dir.c53
1 files changed, 33 insertions, 20 deletions
diff --git a/source3/smbd/dir.c b/source3/smbd/dir.c
index 30c1d77a84..eec8fa12ef 100644
--- a/source3/smbd/dir.c
+++ b/source3/smbd/dir.c
@@ -32,8 +32,6 @@ extern struct current_user current_user;
/* Make directory handle internals available. */
-#define NAME_CACHE_SIZE 100
-
struct name_cache_entry {
char *name;
long offset;
@@ -44,6 +42,7 @@ struct smb_Dir {
SMB_STRUCT_DIR *dir;
long offset;
char *dir_path;
+ size_t name_cache_size;
struct name_cache_entry *name_cache;
unsigned int name_cache_index;
unsigned int file_number;
@@ -1061,12 +1060,14 @@ BOOL is_visible_file(connection_struct *conn, const char *dir_path, const char *
struct smb_Dir *OpenDir(connection_struct *conn, const char *name, const char *mask, uint32 attr)
{
struct smb_Dir *dirp = SMB_MALLOC_P(struct smb_Dir);
+
if (!dirp) {
return NULL;
}
ZERO_STRUCTP(dirp);
dirp->conn = conn;
+ dirp->name_cache_size = lp_directory_name_cache_size(SNUM(conn));
dirp->dir_path = SMB_STRDUP(name);
if (!dirp->dir_path) {
@@ -1078,9 +1079,14 @@ struct smb_Dir *OpenDir(connection_struct *conn, const char *name, const char *m
goto fail;
}
- dirp->name_cache = SMB_CALLOC_ARRAY(struct name_cache_entry, NAME_CACHE_SIZE);
- if (!dirp->name_cache) {
- goto fail;
+ if (dirp->name_cache_size) {
+ dirp->name_cache = SMB_CALLOC_ARRAY(struct name_cache_entry,
+ dirp->name_cache_size);
+ if (!dirp->name_cache) {
+ goto fail;
+ }
+ } else {
+ dirp->name_cache = NULL;
}
dirhandles_open++;
@@ -1113,7 +1119,7 @@ int CloseDir(struct smb_Dir *dirp)
}
SAFE_FREE(dirp->dir_path);
if (dirp->name_cache) {
- for (i = 0; i < NAME_CACHE_SIZE; i++) {
+ for (i = 0; i < dirp->name_cache_size; i++) {
SAFE_FREE(dirp->name_cache[i].name);
}
}
@@ -1229,7 +1235,12 @@ void DirCacheAdd(struct smb_Dir *dirp, const char *name, long offset)
{
struct name_cache_entry *e;
- dirp->name_cache_index = (dirp->name_cache_index+1) % NAME_CACHE_SIZE;
+ if (!dirp->name_cache_size || !dirp->name_cache) {
+ return;
+ }
+
+ dirp->name_cache_index = (dirp->name_cache_index+1) %
+ dirp->name_cache_size;
e = &dirp->name_cache[dirp->name_cache_index];
SAFE_FREE(e->name);
e->name = SMB_STRDUP(name);
@@ -1248,20 +1259,22 @@ BOOL SearchDir(struct smb_Dir *dirp, const char *name, long *poffset)
connection_struct *conn = dirp->conn;
/* Search back in the name cache. */
- for (i = dirp->name_cache_index; i >= 0; i--) {
- struct name_cache_entry *e = &dirp->name_cache[i];
- if (e->name && (conn->case_sensitive ? (strcmp(e->name, name) == 0) : strequal(e->name, name))) {
- *poffset = e->offset;
- SeekDir(dirp, e->offset);
- return True;
+ if (dirp->name_cache_size && dirp->name_cache) {
+ for (i = dirp->name_cache_index; i >= 0; i--) {
+ struct name_cache_entry *e = &dirp->name_cache[i];
+ if (e->name && (conn->case_sensitive ? (strcmp(e->name, name) == 0) : strequal(e->name, name))) {
+ *poffset = e->offset;
+ SeekDir(dirp, e->offset);
+ return True;
+ }
}
- }
- for (i = NAME_CACHE_SIZE-1; i > dirp->name_cache_index; i--) {
- struct name_cache_entry *e = &dirp->name_cache[i];
- if (e->name && (conn->case_sensitive ? (strcmp(e->name, name) == 0) : strequal(e->name, name))) {
- *poffset = e->offset;
- SeekDir(dirp, e->offset);
- return True;
+ for (i = dirp->name_cache_size - 1; i > dirp->name_cache_index; i--) {
+ struct name_cache_entry *e = &dirp->name_cache[i];
+ if (e->name && (conn->case_sensitive ? (strcmp(e->name, name) == 0) : strequal(e->name, name))) {
+ *poffset = e->offset;
+ SeekDir(dirp, e->offset);
+ return True;
+ }
}
}