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Subject[PATCH vfs-2.6 6/6] vfs: add LOOKUP_RENAME_TARGET intent
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This adds LOOKUP_RENAME_TARGET intent for lookup of rename destination.

LOOKUP_RENAME_TARGET is going to be used like LOOKUP_CREATE. But since
the destination of rename() can be existing directory entry, so it has a
difference. Although that difference doesn't matter in my usage, this
tells it to user of this intent.

Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
---

fs/namei.c | 1 +
include/linux/namei.h | 1 +
2 files changed, 2 insertions(+)

diff -puN fs/namei.c~dcache-add-rename-intent fs/namei.c
--- vfs-2.6/fs/namei.c~dcache-add-rename-intent 2008-10-16 06:57:40.000000000 +0900
+++ vfs-2.6-hirofumi/fs/namei.c 2008-10-16 06:57:40.000000000 +0900
@@ -2654,6 +2654,7 @@ asmlinkage long sys_renameat(int olddfd,

oldnd.flags &= ~LOOKUP_PARENT;
newnd.flags &= ~LOOKUP_PARENT;
+ newnd.flags |= LOOKUP_RENAME_TARGET;

trap = lock_rename(new_dir, old_dir);

diff -puN include/linux/namei.h~dcache-add-rename-intent include/linux/namei.h
--- vfs-2.6/include/linux/namei.h~dcache-add-rename-intent 2008-10-16 06:57:40.000000000 +0900
+++ vfs-2.6-hirofumi/include/linux/namei.h 2008-10-16 06:58:05.000000000 +0900
@@ -54,6 +54,7 @@ enum {LAST_NORM, LAST_ROOT, LAST_DOT, LA
#define LOOKUP_OPEN 0x0100
#define LOOKUP_CREATE 0x0200
#define LOOKUP_EXCL 0x0400
+#define LOOKUP_RENAME_TARGET 0x0800

extern int user_path_at(int, const char __user *, unsigned, struct path *);

_

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