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authorDominik Brodowski <linux@dominikbrodowski.net>2018-03-11 13:34:41 +0300
committerDominik Brodowski <linux@dominikbrodowski.net>2018-04-02 21:15:50 +0300
commita16fe33ab5572e52ef4cb9719d6eb49623b2528a (patch)
tree3a917bd107f2da721eaa190dfb270c18ec7338df /drivers/base
parentc7248321a3d42ffba78db0dde88d1c49ca1c045f (diff)
downloadlinux-a16fe33ab5572e52ef4cb9719d6eb49623b2528a.tar.xz
fs: add ksys_chroot() helper; remove-in kernel calls to sys_chroot()
Using this helper allows us to avoid the in-kernel calls to the sys_chroot() syscall. The ksys_ prefix denotes that this function is meant as a drop-in replacement for the syscall. In particular, it uses the same calling convention as sys_chroot(). In the near future, the fs-external callers of ksys_chroot() should be converted to use kern_path()/set_fs_root() directly. Then ksys_chroot() can be moved within sys_chroot() again. 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>
Diffstat (limited to 'drivers/base')
-rw-r--r--drivers/base/devtmpfs.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/base/devtmpfs.c b/drivers/base/devtmpfs.c
index 4afb04686c8e..5743f04014ca 100644
--- a/drivers/base/devtmpfs.c
+++ b/drivers/base/devtmpfs.c
@@ -387,7 +387,7 @@ static int devtmpfsd(void *p)
if (*err)
goto out;
sys_chdir("/.."); /* will traverse into overmounted root */
- sys_chroot(".");
+ ksys_chroot(".");
complete(&setup_done);
while (1) {
spin_lock(&req_lock);