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authorDominik Brodowski <linux@dominikbrodowski.net>2018-03-17 15:06:11 +0100
committerDominik Brodowski <linux@dominikbrodowski.net>2018-04-02 20:15:45 +0200
commit183caa3c8668e95c3647ac1e7e6b8876b7d9fbdb (patch)
treed1471d782e230a792289e684f2ff8ba902d2e928
parentd0d89d1ed3ff7e39d80773be09918037d06522fb (diff)
fanotify: add do_fanotify_mark() helper; remove in-kernel call to syscall
Using the fs-internal do_fanotify_mark() helper allows us to get rid of the fs-internal call to the sys_fanotify_mark() 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 Acked-by: Jan Kara <jack@suse.cz> Cc: Amir Goldstein <amir73il@gmail.com> Cc: linux-fsdevel@vger.kernel.org Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
-rw-r--r--fs/notify/fanotify/fanotify_user.c14
1 files changed, 10 insertions, 4 deletions
diff --git a/fs/notify/fanotify/fanotify_user.c b/fs/notify/fanotify/fanotify_user.c
index c07eb3d655ea..fa803a58a605 100644
--- a/fs/notify/fanotify/fanotify_user.c
+++ b/fs/notify/fanotify/fanotify_user.c
@@ -820,9 +820,8 @@ out_destroy_group:
return fd;
}
-SYSCALL_DEFINE5(fanotify_mark, int, fanotify_fd, unsigned int, flags,
- __u64, mask, int, dfd,
- const char __user *, pathname)
+static int do_fanotify_mark(int fanotify_fd, unsigned int flags, __u64 mask,
+ int dfd, const char __user *pathname)
{
struct inode *inode = NULL;
struct vfsmount *mnt = NULL;
@@ -928,13 +927,20 @@ fput_and_out:
return ret;
}
+SYSCALL_DEFINE5(fanotify_mark, int, fanotify_fd, unsigned int, flags,
+ __u64, mask, int, dfd,
+ const char __user *, pathname)
+{
+ return do_fanotify_mark(fanotify_fd, flags, mask, dfd, pathname);
+}
+
#ifdef CONFIG_COMPAT
COMPAT_SYSCALL_DEFINE6(fanotify_mark,
int, fanotify_fd, unsigned int, flags,
__u32, mask0, __u32, mask1, int, dfd,
const char __user *, pathname)
{
- return sys_fanotify_mark(fanotify_fd, flags,
+ return do_fanotify_mark(fanotify_fd, flags,
#ifdef __BIG_ENDIAN
((__u64)mask0 << 32) | mask1,
#else