commit 3516586a424ea5727be089da6541cbd5644f0497
author Al Viro <viro@zeniv.linux.org.uk> Tue Aug 05 03:00:49 2008 -0400
committer Al Viro <viro@zeniv.linux.org.uk> Thu Oct 23 05:12:56 2008 -0400
tree cb55c6262e066c393917735021aa2bd801f6dd16
parent 2c552d81363e0dac66d478046cc8a3948a67eae9

[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>

fs/gfs2/ops_inode.c

diff --git a/fs/gfs2/ops_inode.c b/fs/gfs2/ops_inode.c
index 534e1e2..d232991 100644
--- a/fs/gfs2/ops_inode.c
+++ b/fs/gfs2/ops_inode.c
@@ -69,7 +69,7 @@
 			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);
 		}

fs/namei.c

diff --git a/fs/namei.c b/fs/namei.c
index e584f04..2b8f823 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -1709,6 +1709,8 @@
 	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 @@
 	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;
 
 	/*

fs/nfs/dir.c

diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c
index efdba2e..c216c87 100644
--- a/fs/nfs/dir.c
+++ b/fs/nfs/dir.c
@@ -707,9 +707,7 @@
 {
 	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 @@
 
 	/* 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;
 	}

include/linux/namei.h

diff --git a/include/linux/namei.h b/include/linux/namei.h
index 221e8bc..6b5627a 100644
--- a/include/linux/namei.h
+++ b/include/linux/namei.h
@@ -51,8 +51,9 @@
 /*
  * Intent data
  */
-#define LOOKUP_OPEN		(0x0100)
-#define LOOKUP_CREATE		(0x0200)
+#define LOOKUP_OPEN		0x0100
+#define LOOKUP_CREATE		0x0200
+#define LOOKUP_EXCL		0x0400
 
 extern int user_path_at(int, const char __user *, unsigned, struct path *);