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| author | Trond Myklebust <Trond.Myklebust@netapp.com> | 2007-07-03 13:04:56 -0400 |
|---|---|---|
| committer | Trond Myklebust <Trond.Myklebust@netapp.com> | 2007-07-10 23:40:40 -0400 |
| commit | 1b45c46cf75d9c48eb611d5cc41607ac1f046606 (patch) | |
| tree | 866cbb5a15aec70a3da159da663f435475a2db4f /fs/nfs | |
| parent | 9f958ab8858c75df800e0121b1920182820cbc39 (diff) | |
| download | linux-1b45c46cf75d9c48eb611d5cc41607ac1f046606.tar.bz2 | |
NFSv4: Fix atomic open for execute...
Currently we do not check for the FMODE_EXEC flag as we should. For that
particular case, we need to perform an ACCESS call to the server in order
to check that the file is executable.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'fs/nfs')
| -rw-r--r-- | fs/nfs/nfs4proc.c | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 1840ebc78fd3..69aab8db4947 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -769,6 +769,8 @@ static int _nfs4_do_access(struct inode *inode, struct rpc_cred *cred, int openf mask |= MAY_READ; if (openflags & FMODE_WRITE) mask |= MAY_WRITE; + if (openflags & FMODE_EXEC) + mask |= MAY_EXEC; status = nfs_access_get_cached(inode, cred, &cache); if (status == 0) goto out; @@ -1269,7 +1271,16 @@ out: static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct nfs4_state *state) { struct file *filp; + int ret; + /* If the open_intent is for execute, we have an extra check to make */ + if (nd->intent.open.flags & FMODE_EXEC) { + ret = _nfs4_do_access(state->inode, + state->owner->so_cred, + nd->intent.open.flags); + if (ret < 0) + goto out_close; + } filp = lookup_instantiate_filp(nd, path->dentry, NULL); if (!IS_ERR(filp)) { struct nfs_open_context *ctx; @@ -1277,8 +1288,10 @@ static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct ctx->state = state; return 0; } + ret = PTR_ERR(filp); +out_close: nfs4_close_state(path, state, nd->intent.open.flags); - return PTR_ERR(filp); + return ret; } struct dentry * |