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| author | Dominik Brodowski <linux@dominikbrodowski.net> | 2018-03-11 11:34:56 +0100 |
|---|---|---|
| committer | Dominik Brodowski <linux@dominikbrodowski.net> | 2018-04-02 20:16:01 +0200 |
| commit | bae217ea8c7e123ed3fb1064909a262924771bbb (patch) | |
| tree | 52e92c1130a87a5985698e469ee8673679553dd2 /init/do_mounts_initrd.c | |
| parent | 2ca2a09d6215fd9621aa3e2db7cc9428a61f2911 (diff) | |
| download | lwn-bae217ea8c7e123ed3fb1064909a262924771bbb.tar.gz lwn-bae217ea8c7e123ed3fb1064909a262924771bbb.zip | |
fs: add ksys_open() wrapper; remove in-kernel calls to sys_open()
Using this wrapper allows us to avoid the in-kernel calls to the
sys_open() 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_open().
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: Al Viro <viro@zeniv.linux.org.uk>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
Diffstat (limited to 'init/do_mounts_initrd.c')
| -rw-r--r-- | init/do_mounts_initrd.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/init/do_mounts_initrd.c b/init/do_mounts_initrd.c index 6907c6dbc443..cedca8fd2590 100644 --- a/init/do_mounts_initrd.c +++ b/init/do_mounts_initrd.c @@ -38,7 +38,7 @@ static int init_linuxrc(struct subprocess_info *info, struct cred *new) { sys_unshare(CLONE_FS | CLONE_FILES); /* stdin/stdout/stderr for /linuxrc */ - sys_open("/dev/console", O_RDWR, 0); + ksys_open("/dev/console", O_RDWR, 0); ksys_dup(0); ksys_dup(0); /* move initrd over / and chdir/chroot in initrd root */ @@ -99,7 +99,7 @@ static void __init handle_initrd(void) if (!error) printk("okay\n"); else { - int fd = sys_open("/dev/root.old", O_RDWR, 0); + int fd = ksys_open("/dev/root.old", O_RDWR, 0); if (error == -ENOENT) printk("/initrd does not exist. Ignored.\n"); else |