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| author | J. Bruce Fields <bfields@fieldses.org> | 2006-10-17 00:10:14 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-10-17 08:18:46 -0700 |
| commit | 9801d8a39cfe6c34f39f9552a246a6bd002e735e (patch) | |
| tree | 1bc534709dc02d308532f5285b9f376ca2f2ec31 /fs | |
| parent | dc730e173785e29b297aa605786c94adaffe2544 (diff) | |
| download | linux-9801d8a39cfe6c34f39f9552a246a6bd002e735e.tar.gz linux-9801d8a39cfe6c34f39f9552a246a6bd002e735e.tar.bz2 linux-9801d8a39cfe6c34f39f9552a246a6bd002e735e.zip | |
[PATCH] knfsd: nfsd4: fix open permission checking
We weren't actually checking for SHARE_ACCESS_WRITE, with the result that the
owner could open a non-writeable file for write!
Continue to allow DENY_WRITE only with write access.
Thanks to Jim Rees for reporting the bug.
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/nfsd/nfs4proc.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/fs/nfsd/nfs4proc.c b/fs/nfsd/nfs4proc.c index a05d3376cc46..d1fac6872c44 100644 --- a/fs/nfsd/nfs4proc.c +++ b/fs/nfsd/nfs4proc.c @@ -78,8 +78,10 @@ do_open_permission(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfs if (open->op_share_access & NFS4_SHARE_ACCESS_READ) accmode |= MAY_READ; - if (open->op_share_deny & NFS4_SHARE_ACCESS_WRITE) + if (open->op_share_access & NFS4_SHARE_ACCESS_WRITE) accmode |= (MAY_WRITE | MAY_TRUNC); + if (open->op_share_deny & NFS4_SHARE_DENY_WRITE) + accmode |= MAY_WRITE; status = fh_verify(rqstp, current_fh, S_IFREG, accmode); |