diff options
| author | Dominik Brodowski <linux@dominikbrodowski.net> | 2018-03-11 13:34:28 +0300 |
|---|---|---|
| committer | Dominik Brodowski <linux@dominikbrodowski.net> | 2018-04-02 21:15:36 +0300 |
| commit | ee81feb64ead8e4bed0ebc94c980e6cd836aaafd (patch) | |
| tree | 5a975b46d54eb7fcd3a65c55b55361992db89322 | |
| parent | 0a216dd1cfe8a4966767e7e8c0bb90c3db163def (diff) | |
| download | linux-ee81feb64ead8e4bed0ebc94c980e6cd836aaafd.tar.xz | |
fs: add do_renameat2() helper; remove internal call to sys_renameat2()
Using this helper removes in-kernel calls to the sys_renameat2() syscall.
This patch is part of a series which removes in-kernel calls to syscalls.
On this basis, the syscall entry path can be streamlined. For details, see
http://lkml.kernel.org/r/20180325162527.GA17492@light.dominikbrodowski.net
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
| -rw-r--r-- | fs/namei.c | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/fs/namei.c b/fs/namei.c index 921ae32dbc80..524e829ffc7d 100644 --- a/fs/namei.c +++ b/fs/namei.c @@ -4478,8 +4478,8 @@ out: } EXPORT_SYMBOL(vfs_rename); -SYSCALL_DEFINE5(renameat2, int, olddfd, const char __user *, oldname, - int, newdfd, const char __user *, newname, unsigned int, flags) +static int do_renameat2(int olddfd, const char __user *oldname, int newdfd, + const char __user *newname, unsigned int flags) { struct dentry *old_dentry, *new_dentry; struct dentry *trap; @@ -4621,15 +4621,21 @@ exit: return error; } +SYSCALL_DEFINE5(renameat2, int, olddfd, const char __user *, oldname, + int, newdfd, const char __user *, newname, unsigned int, flags) +{ + return do_renameat2(olddfd, oldname, newdfd, newname, flags); +} + SYSCALL_DEFINE4(renameat, int, olddfd, const char __user *, oldname, int, newdfd, const char __user *, newname) { - return sys_renameat2(olddfd, oldname, newdfd, newname, 0); + return do_renameat2(olddfd, oldname, newdfd, newname, 0); } SYSCALL_DEFINE2(rename, const char __user *, oldname, const char __user *, newname) { - return sys_renameat2(AT_FDCWD, oldname, AT_FDCWD, newname, 0); + return do_renameat2(AT_FDCWD, oldname, AT_FDCWD, newname, 0); } int vfs_whiteout(struct inode *dir, struct dentry *dentry) |