path: root/ipc/util.h
diff options
authorDominik Brodowski <>2018-03-20 19:48:14 +0100
committerDominik Brodowski <>2018-04-02 20:15:21 +0200
commit41f4f0e2f5f4cd060885405c04214851ffe7b299 (patch)
tree3c465c0218ef422e7d7dd5553c8531479f97d654 /ipc/util.h
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/util.h')
1 files changed, 13 insertions, 0 deletions
diff --git a/ipc/util.h b/ipc/util.h
index 89b8ec176fc4..6deadf77547e 100644
--- a/ipc/util.h
+++ b/ipc/util.h
@@ -235,4 +235,17 @@ static inline int compat_ipc_parse_version(int *cmd)
+/* for __ARCH_WANT_SYS_IPC */
+long ksys_semtimedop(int semid, struct sembuf __user *tsops,
+ unsigned int nsops,
+ const struct timespec __user *timeout);
+long compat_ksys_semtimedop(int semid, struct sembuf __user *tsems,
+ unsigned int nsops,
+ const struct compat_timespec __user *timeout);
+#endif /* CONFIG_COMPAT */