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cifs: don't use CIFSGetSrvInodeNumber in is_path_accessible 

Because it's lighter weight, CIFS tries to use CIFSGetSrvInodeNumber to
verify the accessibility of the root inode and then falls back to doing a
full QPathInfo if that fails with -EOPNOTSUPP. I have at least a report
of a server that returns NT_STATUS_INTERNAL_ERROR rather than something
that translates to EOPNOTSUPP.

Rather than trying to be clever with that call, just have
is_path_accessible do a normal QPathInfo. That call is widely
supported and it shouldn't increase the overhead significantly.

Cc: Stable <stable@kernel.org>
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
This commit is contained in:
Jeff Layton 2009-11-06 14:18:49 -05:00 committed by Steve French
parent ec06aedd44
commit f475f67754
1 changed files with 0 additions and 8 deletions
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8
fs/cifs/connect.c
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@ -2220,16 +2220,8 @@ is_path_accessible(int xid, struct cifsTconInfo *tcon,
struct cifs_sb_info *cifs_sb, const char *full_path) struct cifs_sb_info *cifs_sb, const char *full_path)
{ {
int rc; int rc;
__u64 inode_num;
FILE_ALL_INFO *pfile_info; FILE_ALL_INFO *pfile_info;
rc = CIFSGetSrvInodeNumber(xid, tcon, full_path, &inode_num,
cifs_sb->local_nls,
cifs_sb->mnt_cifs_flags &
CIFS_MOUNT_MAP_SPECIAL_CHR);
if (rc != -EOPNOTSUPP)
return rc;
pfile_info = kmalloc(sizeof(FILE_ALL_INFO), GFP_KERNEL); pfile_info = kmalloc(sizeof(FILE_ALL_INFO), GFP_KERNEL);
if (pfile_info == NULL) if (pfile_info == NULL)
return -ENOMEM; return -ENOMEM;