path: root/init
diff options
authorDominik Brodowski <linux@dominikbrodowski.net>2018-03-11 11:34:50 +0100
committerDominik Brodowski <linux@dominikbrodowski.net>2018-04-02 20:15:56 +0200
commit87c4e19262d81862886207be3c8795f6576d5a52 (patch)
tree29593184be7a8e70b091108ec8299b4436462f23 /init
parentb724e846b491ef8db943be8086226c9d8da31877 (diff)
fs: add do_mknodat() helper and ksys_mknod() wrapper; remove in-kernel calls to syscall
Using the fs-internal do_mknodat() helper allows us to get rid of fs-internal calls to the sys_mknodat() syscall. Introducing the ksys_mknod() wrapper allows us to avoid the in-kernel calls to sys_mknod() 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_mknod(). 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')
3 files changed, 3 insertions, 3 deletions
diff --git a/init/do_mounts.h b/init/do_mounts.h
index 401f90ee1eeb..0bb0806de4ce 100644
--- a/init/do_mounts.h
+++ b/init/do_mounts.h
@@ -17,7 +17,7 @@ extern int root_mountflags;
static inline int create_dev(char *name, dev_t dev)
- return sys_mknod(name, S_IFBLK|0600, new_encode_dev(dev));
+ return ksys_mknod(name, S_IFBLK|0600, new_encode_dev(dev));
static inline u32 bstat(char *name)
diff --git a/init/initramfs.c b/init/initramfs.c
index cd9571a113b6..2972ed0ab399 100644
--- a/init/initramfs.c
+++ b/init/initramfs.c
@@ -359,7 +359,7 @@ static int __init do_name(void)
} else if (S_ISBLK(mode) || S_ISCHR(mode) ||
S_ISFIFO(mode) || S_ISSOCK(mode)) {
if (maybe_link() == 0) {
- sys_mknod(collected, mode, rdev);
+ ksys_mknod(collected, mode, rdev);
sys_chown(collected, uid, gid);
sys_chmod(collected, mode);
do_utime(collected, mtime);
diff --git a/init/noinitramfs.c b/init/noinitramfs.c
index a08a9d937e60..f4bad8436c93 100644
--- a/init/noinitramfs.c
+++ b/init/noinitramfs.c
@@ -33,7 +33,7 @@ static int __init default_rootfs(void)
if (err < 0)
goto out;
- err = sys_mknod((const char __user __force *) "/dev/console",
+ err = ksys_mknod((const char __user __force *) "/dev/console",
new_encode_dev(MKDEV(5, 1)));
if (err < 0)

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