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authorShirish Pargaonkar <shirishpargaonkar@gmail.com>2012-05-15 10:19:16 -0500
committerPavel Shilovsky <piastry@etersoft.ru>2012-05-17 13:07:49 +0400
commit2608bee744a92d60d15ff4e6e0b913d8b406aedd (patch)
tree3104d96b86e25c931b2bee199eb67842327aeaa1 /fs/cifs/readdir.c
parent7f92447aa7be605fd80d9f248efe0b8ac9379f11 (diff)
downloadlinux-2608bee744a92d60d15ff4e6e0b913d8b406aedd.tar.bz2
cifs: Include backup intent search flags during searches {try #2)
As observed and suggested by Tushar Gosavi... --------- readdir calls these function to send TRANS2_FIND_FIRST and TRANS2_FIND_NEXT command to the server. The current cifs module is not specifying CIFS_SEARCH_BACKUP_SEARCH flag while sending these command when backupuid/backupgid is specified. This can be resolved by specifying CIFS_SEARCH_BACKUP_SEARCH flag. --------- Cc: <stable@kernel.org> Reported-and-Tested-by: Tushar Gosavi <tugosavi@in.ibm.com> Signed-off-by: Shirish Pargaonkar <shirishpargaonkar@gmail.com> Acked-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
Diffstat (limited to 'fs/cifs/readdir.c')
-rw-r--r--fs/cifs/readdir.c15
1 files changed, 13 insertions, 2 deletions
diff --git a/fs/cifs/readdir.c b/fs/cifs/readdir.c
index e2bbc683e018..0a8224d1c4c5 100644
--- a/fs/cifs/readdir.c
+++ b/fs/cifs/readdir.c
@@ -219,6 +219,7 @@ int get_symlink_reparse_path(char *full_path, struct cifs_sb_info *cifs_sb,
static int initiate_cifs_search(const int xid, struct file *file)
{
+ __u16 search_flags;
int rc = 0;
char *full_path = NULL;
struct cifsFileInfo *cifsFile;
@@ -270,8 +271,12 @@ ffirst_retry:
cifsFile->srch_inf.info_level = SMB_FIND_FILE_DIRECTORY_INFO;
}
+ search_flags = CIFS_SEARCH_CLOSE_AT_END | CIFS_SEARCH_RETURN_RESUME;
+ if (backup_cred(cifs_sb))
+ search_flags |= CIFS_SEARCH_BACKUP_SEARCH;
+
rc = CIFSFindFirst(xid, pTcon, full_path, cifs_sb->local_nls,
- &cifsFile->netfid, &cifsFile->srch_inf,
+ &cifsFile->netfid, search_flags, &cifsFile->srch_inf,
cifs_sb->mnt_cifs_flags &
CIFS_MOUNT_MAP_SPECIAL_CHR, CIFS_DIR_SEP(cifs_sb));
if (rc == 0)
@@ -502,11 +507,13 @@ static int cifs_save_resume_key(const char *current_entry,
static int find_cifs_entry(const int xid, struct cifs_tcon *pTcon,
struct file *file, char **ppCurrentEntry, int *num_to_ret)
{
+ __u16 search_flags;
int rc = 0;
int pos_in_buf = 0;
loff_t first_entry_in_buffer;
loff_t index_to_find = file->f_pos;
struct cifsFileInfo *cifsFile = file->private_data;
+ struct cifs_sb_info *cifs_sb = CIFS_SB(file->f_path.dentry->d_sb);
/* check if index in the buffer */
if ((cifsFile == NULL) || (ppCurrentEntry == NULL) ||
@@ -560,10 +567,14 @@ static int find_cifs_entry(const int xid, struct cifs_tcon *pTcon,
cifsFile);
}
+ search_flags = CIFS_SEARCH_CLOSE_AT_END | CIFS_SEARCH_RETURN_RESUME;
+ if (backup_cred(cifs_sb))
+ search_flags |= CIFS_SEARCH_BACKUP_SEARCH;
+
while ((index_to_find >= cifsFile->srch_inf.index_of_last_entry) &&
(rc == 0) && !cifsFile->srch_inf.endOfSearch) {
cFYI(1, "calling findnext2");
- rc = CIFSFindNext(xid, pTcon, cifsFile->netfid,
+ rc = CIFSFindNext(xid, pTcon, cifsFile->netfid, search_flags,
&cifsFile->srch_inf);
/* FindFirst/Next set last_entry to NULL on malformed reply */
if (cifsFile->srch_inf.last_entry)