[PATCH] make O_EXCL in nd->intent.flags visible in nd->flags

New flag: LOOKUP_EXCL.  Set before doing the final step of pathname
resolution on the paths that have LOOKUP_CREATE and O_EXCL.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

3 files changed, 6 insertions, 6 deletions

diff --git a/fs/gfs2/ops_inode.c b/fs/gfs2/ops_inode.c
index 534e1e2c65ca..d232991b9046 100644
--- a/fs/gfs2/ops_inode.c
+++ b/fs/gfs2/ops_inode.c
@@ -69,7 +69,7 @@ static int gfs2_create(struct inode *dir, struct dentry *dentry,
                         mark_inode_dirty(inode);
                         break;
                 } else if (PTR_ERR(inode) != -EEXIST ||
-                           (nd && (nd->intent.open.flags & O_EXCL))) {
+                           (nd && nd->flags & LOOKUP_EXCL)) {
                         gfs2_holder_uninit(ghs);
                         return PTR_ERR(inode);
                 }
diff --git a/fs/namei.c b/fs/namei.c
index e584f04745b5..2b8f823eda44 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -1709,6 +1709,8 @@ struct file *do_filp_open(int dfd, const char *pathname,
         dir = nd.path.dentry;
         nd.flags &= ~LOOKUP_PARENT;
         nd.flags |= LOOKUP_CREATE | LOOKUP_OPEN;
+        if (flag & O_EXCL)
+                nd.flags |= LOOKUP_EXCL;
         mutex_lock(&dir->d_inode->i_mutex);
         path.dentry = lookup_hash(&nd);
         path.mnt = nd.path.mnt;
@@ -1906,7 +1908,7 @@ struct dentry *lookup_create(struct nameidata *nd, int is_dir)
         if (nd->last_type != LAST_NORM)
                 goto fail;
         nd->flags &= ~LOOKUP_PARENT;
-        nd->flags |= LOOKUP_CREATE;
+        nd->flags |= LOOKUP_CREATE | LOOKUP_EXCL;
         nd->intent.open.flags = O_EXCL;
 
         /*
diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c
index efdba2e802d7..c216c8786c51 100644
--- a/fs/nfs/dir.c
+++ b/fs/nfs/dir.c
@@ -707,9 +707,7 @@ static int nfs_is_exclusive_create(struct inode *dir, struct nameidata *nd)
 {
         if (NFS_PROTO(dir)->version == 2)
                 return 0;
-        if (nd == NULL || nfs_lookup_check_intent(nd, LOOKUP_CREATE) == 0)
-                return 0;
-        return (nd->intent.open.flags & O_EXCL) != 0;
+        return nd && nfs_lookup_check_intent(nd, LOOKUP_EXCL);
 }
 
 /*
@@ -1009,7 +1007,7 @@ static struct dentry *nfs_atomic_lookup(struct inode *dir, struct dentry *dentry
 
         /* Let vfs_create() deal with O_EXCL. Instantiate, but don't hash
          * the dentry. */
-        if (nd->intent.open.flags & O_EXCL) {
+        if (nd->flags & LOOKUP_EXCL) {
                 d_instantiate(dentry, NULL);
                 goto out;
         }