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| author | J. Bruce Fields <bfields@citi.umich.edu> | 2009-12-02 01:42:57 +0100 |
|---|---|---|
| committer | J. Bruce Fields <bfields@citi.umich.edu> | 2009-12-15 00:06:54 +0100 |
| commit | 57ecb34febc4c133ca0ccc7817796605a78a01d3 (patch) | |
| tree | cc0b9443c5b1c56c138b3bc0066d36afe55faaeb /fs/nfsd | |
| parent | nfsd: simplify fh_verify access checks (diff) | |
| download | linux-57ecb34febc4c133ca0ccc7817796605a78a01d3.tar.xz linux-57ecb34febc4c133ca0ccc7817796605a78a01d3.zip | |
nfsd4: fix share mode permissions
NFSv4 opens may function as locks denying other NFSv4 users the rights
to open a file.
We're requiring a user to have write permissions before they can deny
write. We're *not* requiring a user to have write permissions to deny
read, which is if anything a more drastic denial.
What was intended was to require write permissions for DENY_READ.
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Diffstat (limited to 'fs/nfsd')
| -rw-r--r-- | fs/nfsd/nfs4proc.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/nfsd/nfs4proc.c b/fs/nfsd/nfs4proc.c index 60a93cdefef5..a468224a118f 100644 --- a/fs/nfsd/nfs4proc.c +++ b/fs/nfsd/nfs4proc.c @@ -171,7 +171,7 @@ do_open_permission(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfs accmode |= NFSD_MAY_READ; if (open->op_share_access & NFS4_SHARE_ACCESS_WRITE) accmode |= (NFSD_MAY_WRITE | NFSD_MAY_TRUNC); - if (open->op_share_deny & NFS4_SHARE_DENY_WRITE) + if (open->op_share_deny & NFS4_SHARE_DENY_READ) accmode |= NFSD_MAY_WRITE; status = fh_verify(rqstp, current_fh, S_IFREG, accmode); |