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[PATCH vfs-2.6 6/6] vfs: add LOOKUP_RENAME_TARGET intent 

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>
hifive-unleashed-5.1
OGAWA Hirofumi 2008-10-16 07:50:29 +09:00 committed by Al Viro
parent 0612d9fb27
commit 4e9ed2f85a
2 changed files with 2 additions and 0 deletions
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1
fs/namei.c
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@ -2654,6 +2654,7 @@ asmlinkage long sys_renameat(int olddfd, const char __user *oldname,
oldnd.flags &= ~LOOKUP_PARENT;
newnd.flags &= ~LOOKUP_PARENT;
newnd.flags |= LOOKUP_RENAME_TARGET;
trap = lock_rename(new_dir, old_dir);

1
include/linux/namei.h
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@ -54,6 +54,7 @@ enum {LAST_NORM, LAST_ROOT, LAST_DOT, LAST_DOTDOT, LAST_BIND};
#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 *);