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linux-sg2042
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[NFS]: Check that the server returns a valid regular file to our OPEN request 

Since it appears that some servers don't...

 Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Trond Myklebust 2005-10-18 14:20:18 -07:00
parent 02a913a73b
commit 6f926b5ba7
2 changed files with 19 additions and 1 deletions
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4
fs/nfs/dir.c
View File

@ -957,10 +957,12 @@ static struct dentry *nfs_atomic_lookup(struct inode *dir, struct dentry *dentry
res = NULL;
goto out;
/* This turned out not to be a regular file */
case -EISDIR:
case -ENOTDIR:
goto no_open;
case -ELOOP:
if (!(nd->intent.open.flags & O_NOFOLLOW))
goto no_open;
/* case -EISDIR: */
/* case -EINVAL: */
default:
goto out;

16
fs/nfs/nfs4proc.c
View File

@ -419,6 +419,22 @@ static int _nfs4_proc_open(struct inode *dir, struct nfs4_state_owner *sp, stru
o_arg->clientid = sp->so_client->cl_clientid;
status = rpc_call_sync(server->client, &msg, RPC_TASK_NOINTR);
if (status == 0) {
/* OPEN on anything except a regular file is disallowed in NFSv4 */
switch (o_res->f_attr->mode & S_IFMT) {
case S_IFREG:
break;
case S_IFLNK:
status = -ELOOP;
break;
case S_IFDIR:
status = -EISDIR;
break;
default:
status = -ENOTDIR;
}
}
nfs_increment_open_seqid(status, o_arg->seqid);
if (status != 0)
goto out;