From d969c6fa7263c8fc1928f528bb68587872350b6c Mon Sep 17 00:00:00 2001 From: Dominik Brodowski Date: Tue, 20 Mar 2018 20:00:39 +0100 Subject: ipc: add semctl syscall/compat_syscall wrappers Provide ksys_semctl() and compat_ksys_semctl() wrappers to avoid in-kernel calls to these syscalls. The ksys_ prefix denotes that these functions are meant as a drop-in replacement for the syscalls. In particular, they use the same calling convention as sys_semctl() and compat_sys_semctl(). 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 Cc: Andrew Morton Signed-off-by: Dominik Brodowski --- ipc/util.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'ipc/util.h') diff --git a/ipc/util.h b/ipc/util.h index 0f07056e5a73..1f1109b83437 100644 --- a/ipc/util.h +++ b/ipc/util.h @@ -241,12 +241,14 @@ long ksys_semtimedop(int semid, struct sembuf __user *tsops, unsigned int nsops, const struct timespec __user *timeout); long ksys_semget(key_t key, int nsems, int semflg); +long ksys_semctl(int semid, int semnum, int cmd, unsigned long arg); /* for CONFIG_ARCH_WANT_OLD_COMPAT_IPC */ #ifdef CONFIG_COMPAT long compat_ksys_semtimedop(int semid, struct sembuf __user *tsems, unsigned int nsops, const struct compat_timespec __user *timeout); +long compat_ksys_semctl(int semid, int semnum, int cmd, int arg); #endif /* CONFIG_COMPAT */ #endif -- cgit v1.2.3-59-g8ed1b