path: root/ipc/syscall.c
diff options
authorDominik Brodowski <>2018-03-20 19:48:14 +0100
committerDominik Brodowski <>2018-04-02 20:15:21 +0200
commit41f4f0e2f5f4cd060885405c04214851ffe7b299 (patch)
tree3c465c0218ef422e7d7dd5553c8531479f97d654 /ipc/syscall.c
parent6df354653e8cc07be1f057d9207e1092c0b3963b (diff)
ipc: add semtimedop syscall/compat_syscall wrappers
Provide ksys_semtimedop() and compat_ksys_semtimedop() 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_semtimedop() and compat_sys_semtimedop(). 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 Cc: Al Viro <> Cc: Andrew Morton <> Signed-off-by: Dominik Brodowski <>
Diffstat (limited to 'ipc/syscall.c')
1 files changed, 10 insertions, 7 deletions
diff --git a/ipc/syscall.c b/ipc/syscall.c
index 3763b4293b74..84d6a7691baa 100644
--- a/ipc/syscall.c
+++ b/ipc/syscall.c
@@ -7,6 +7,9 @@
#include <linux/unistd.h>
#include <linux/syscalls.h>
+#include <linux/security.h>
+#include <linux/ipc_namespace.h>
+#include "util.h"
#include <linux/errno.h>
@@ -24,12 +27,12 @@ SYSCALL_DEFINE6(ipc, unsigned int, call, int, first, unsigned long, second,
switch (call) {
case SEMOP:
- return sys_semtimedop(first, (struct sembuf __user *)ptr,
- second, NULL);
+ return ksys_semtimedop(first, (struct sembuf __user *)ptr,
+ second, NULL);
- return sys_semtimedop(first, (struct sembuf __user *)ptr,
- second,
- (const struct timespec __user *)fifth);
+ return ksys_semtimedop(first, (struct sembuf __user *)ptr,
+ second,
+ (const struct timespec __user *)fifth);
case SEMGET:
return sys_semget(first, second, third);
@@ -124,9 +127,9 @@ COMPAT_SYSCALL_DEFINE6(ipc, u32, call, int, first, int, second,
switch (call) {
case SEMOP:
/* struct sembuf is the same on 32 and 64bit :)) */
- return sys_semtimedop(first, compat_ptr(ptr), second, NULL);
+ return ksys_semtimedop(first, compat_ptr(ptr), second, NULL);
- return compat_sys_semtimedop(first, compat_ptr(ptr), second,
+ return compat_ksys_semtimedop(first, compat_ptr(ptr), second,
case SEMGET:
return sys_semget(first, second, third);