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>
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@ -820,9 +820,8 @@ out_destroy_group:
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return fd;
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return fd;
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}
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}
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SYSCALL_DEFINE5(fanotify_mark, int, fanotify_fd, unsigned int, flags,
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static int do_fanotify_mark(int fanotify_fd, unsigned int flags, __u64 mask,
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__u64, mask, int, dfd,
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int dfd, const char __user *pathname)
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const char __user *, pathname)
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{
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{
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struct inode *inode = NULL;
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struct inode *inode = NULL;
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struct vfsmount *mnt = NULL;
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struct vfsmount *mnt = NULL;
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@ -928,13 +927,20 @@ fput_and_out:
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return ret;
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return ret;
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}
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}
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SYSCALL_DEFINE5(fanotify_mark, int, fanotify_fd, unsigned int, flags,
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__u64, mask, int, dfd,
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const char __user *, pathname)
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{
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return do_fanotify_mark(fanotify_fd, flags, mask, dfd, pathname);
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}
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#ifdef CONFIG_COMPAT
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#ifdef CONFIG_COMPAT
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COMPAT_SYSCALL_DEFINE6(fanotify_mark,
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COMPAT_SYSCALL_DEFINE6(fanotify_mark,
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int, fanotify_fd, unsigned int, flags,
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int, fanotify_fd, unsigned int, flags,
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__u32, mask0, __u32, mask1, int, dfd,
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__u32, mask0, __u32, mask1, int, dfd,
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const char __user *, pathname)
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const char __user *, pathname)
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{
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{
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return sys_fanotify_mark(fanotify_fd, flags,
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return do_fanotify_mark(fanotify_fd, flags,
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#ifdef __BIG_ENDIAN
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#ifdef __BIG_ENDIAN
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((__u64)mask0 << 32) | mask1,
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((__u64)mask0 << 32) | mask1,
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#else
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#else
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