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authorTrond Myklebust <Trond.Myklebust@netapp.com>2007-07-03 13:04:56 -0400
committerTrond Myklebust <Trond.Myklebust@netapp.com>2007-07-10 23:40:40 -0400
commit1b45c46cf75d9c48eb611d5cc41607ac1f046606 (patch)
tree866cbb5a15aec70a3da159da663f435475a2db4f /fs/nfs/nfs4proc.c
parent9f958ab8858c75df800e0121b1920182820cbc39 (diff)
downloadop-kernel-dev-1b45c46cf75d9c48eb611d5cc41607ac1f046606.zip
op-kernel-dev-1b45c46cf75d9c48eb611d5cc41607ac1f046606.tar.gz
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/nfs4proc.c')
-rw-r--r--fs/nfs/nfs4proc.c15
1 files changed, 14 insertions, 1 deletions
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 1840ebc..69aab8d 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 *
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