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| author | Dominik Brodowski <linux@dominikbrodowski.net> | 2018-03-11 13:34:36 +0300 |
|---|---|---|
| committer | Dominik Brodowski <linux@dominikbrodowski.net> | 2018-04-02 21:15:38 +0300 |
| commit | 52fb6db0fd6f50ac71475f02b96098fbb1fb3417 (patch) | |
| tree | 781a546ea25e615de9f7f6870d0bca3dee8d6c8e | |
| parent | 791eb22eef0d077df4ddcf633ee6eac038f0431e (diff) | |
| download | linux-52fb6db0fd6f50ac71475f02b96098fbb1fb3417.tar.xz | |
fs: add do_signalfd4() helper; remove internal calls to sys_signalfd4()
Using this helper removes in-kernel calls to the sys_signalfd4() syscall
function.
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: Alexander Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
| -rw-r--r-- | fs/signalfd.c | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/fs/signalfd.c b/fs/signalfd.c index 76bf9cc62074..501c41f3351f 100644 --- a/fs/signalfd.c +++ b/fs/signalfd.c @@ -256,8 +256,8 @@ static const struct file_operations signalfd_fops = { .llseek = noop_llseek, }; -SYSCALL_DEFINE4(signalfd4, int, ufd, sigset_t __user *, user_mask, - size_t, sizemask, int, flags) +static int do_signalfd4(int ufd, sigset_t __user *user_mask, size_t sizemask, + int flags) { sigset_t sigmask; struct signalfd_ctx *ctx; @@ -310,10 +310,16 @@ SYSCALL_DEFINE4(signalfd4, int, ufd, sigset_t __user *, user_mask, return ufd; } +SYSCALL_DEFINE4(signalfd4, int, ufd, sigset_t __user *, user_mask, + size_t, sizemask, int, flags) +{ + return do_signalfd4(ufd, user_mask, sizemask, flags); +} + SYSCALL_DEFINE3(signalfd, int, ufd, sigset_t __user *, user_mask, size_t, sizemask) { - return sys_signalfd4(ufd, user_mask, sizemask, 0); + return do_signalfd4(ufd, user_mask, sizemask, 0); } #ifdef CONFIG_COMPAT @@ -333,7 +339,7 @@ COMPAT_SYSCALL_DEFINE4(signalfd4, int, ufd, if (copy_to_user(ksigmask, &tmp, sizeof(sigset_t))) return -EFAULT; - return sys_signalfd4(ufd, ksigmask, sizeof(sigset_t), flags); + return do_signalfd4(ufd, ksigmask, sizeof(sigset_t), flags); } COMPAT_SYSCALL_DEFINE3(signalfd, int, ufd, |