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| author | Dominik Brodowski <linux@dominikbrodowski.net> | 2018-03-11 11:34:49 +0100 |
|---|---|---|
| committer | Dominik Brodowski <linux@dominikbrodowski.net> | 2018-04-02 20:15:54 +0200 |
| commit | 0101db7a301981a008296d522d8c1f456b0fe837 (patch) | |
| tree | 5db6ec4578e8d5f97e9a2e00b3fbbf21e1204fa8 /init | |
| parent | f459dffae1c6026928bbe8e972daecb635b7b5e9 (diff) | |
| download | linux-0-day-0101db7a301981a008296d522d8c1f456b0fe837.tar.gz linux-0-day-0101db7a301981a008296d522d8c1f456b0fe837.tar.xz | |
fs: add do_mkdirat() helper and ksys_mkdir() wrapper; remove in-kernel calls to syscall
Using the fs-internal do_mkdirat() helper allows us to get rid of
fs-internal calls to the sys_mkdirat() syscall.
Introducing the ksys_mkdir() wrapper allows us to avoid the in-kernel calls
to the sys_mkdir() 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_mkdir().
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')
| -rw-r--r-- | init/do_mounts_initrd.c | 2 | ||||
| -rw-r--r-- | init/initramfs.c | 2 | ||||
| -rw-r--r-- | init/noinitramfs.c | 4 |
3 files changed, 4 insertions, 4 deletions
diff --git a/init/do_mounts_initrd.c b/init/do_mounts_initrd.c index e9e9e1c67d315..99922d1ebfe6a 100644 --- a/init/do_mounts_initrd.c +++ b/init/do_mounts_initrd.c @@ -60,7 +60,7 @@ static void __init handle_initrd(void) create_dev("/dev/root.old", Root_RAM0); /* mount initrd on rootfs' /root */ mount_block_root("/dev/root.old", root_mountflags & ~MS_RDONLY); - sys_mkdir("/old", 0700); + ksys_mkdir("/old", 0700); ksys_chdir("/old"); /* try loading default modules from initrd */ diff --git a/init/initramfs.c b/init/initramfs.c index 73bbb227f8685..ca538a5f9fa99 100644 --- a/init/initramfs.c +++ b/init/initramfs.c @@ -352,7 +352,7 @@ static int __init do_name(void) } } } else if (S_ISDIR(mode)) { - sys_mkdir(collected, mode); + ksys_mkdir(collected, mode); sys_chown(collected, uid, gid); sys_chmod(collected, mode); dir_add(collected, mtime); diff --git a/init/noinitramfs.c b/init/noinitramfs.c index 267739d851791..a08a9d937e60b 100644 --- a/init/noinitramfs.c +++ b/init/noinitramfs.c @@ -29,7 +29,7 @@ static int __init default_rootfs(void) { int err; - err = sys_mkdir((const char __user __force *) "/dev", 0755); + err = ksys_mkdir((const char __user __force *) "/dev", 0755); if (err < 0) goto out; @@ -39,7 +39,7 @@ static int __init default_rootfs(void) if (err < 0) goto out; - err = sys_mkdir((const char __user __force *) "/root", 0700); + err = ksys_mkdir((const char __user __force *) "/root", 0700); if (err < 0) goto out; |