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authorDominik Brodowski <linux@dominikbrodowski.net>2018-03-20 23:29:00 +0300
committerDominik Brodowski <linux@dominikbrodowski.net>2018-04-02 21:15:28 +0300
commit31c213f2106b7ea06f7fdc94ef8b785ed5342cf7 (patch)
tree2d35678c97d438ac743f30b596006370a1e02c15 /ipc/util.h
parent078faac9e8b6c8124bc012bbf97cca59caf6d4ea (diff)
downloadlinux-31c213f2106b7ea06f7fdc94ef8b785ed5342cf7.tar.xz
ipc: add msgsnd syscall/compat_syscall wrappers
Provide ksys_msgsnd() and compat_ksys_msgsnd() 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_msgsnd() and compat_sys_msgsnd(). 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 <viro@zeniv.linux.org.uk> Cc: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
Diffstat (limited to 'ipc/util.h')
-rw-r--r--ipc/util.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/ipc/util.h b/ipc/util.h
index c16aceb1bdec..51853dc2f340 100644
--- a/ipc/util.h
+++ b/ipc/util.h
@@ -246,6 +246,8 @@ long ksys_msgget(key_t key, int msgflg);
long ksys_msgctl(int msqid, int cmd, struct msqid_ds __user *buf);
long ksys_msgrcv(int msqid, struct msgbuf __user *msgp, size_t msgsz,
long msgtyp, int msgflg);
+long ksys_msgsnd(int msqid, struct msgbuf __user *msgp, size_t msgsz,
+ int msgflg);
long ksys_shmget(key_t key, size_t size, int shmflg);
long ksys_shmdt(char __user *shmaddr);
long ksys_shmctl(int shmid, int cmd, struct shmid_ds __user *buf);
@@ -259,6 +261,8 @@ long compat_ksys_semctl(int semid, int semnum, int cmd, int arg);
long compat_ksys_msgctl(int msqid, int cmd, void __user *uptr);
long compat_ksys_msgrcv(int msqid, compat_uptr_t msgp, compat_ssize_t msgsz,
compat_long_t msgtyp, int msgflg);
+long compat_ksys_msgsnd(int msqid, compat_uptr_t msgp,
+ compat_ssize_t msgsz, int msgflg);
long compat_ksys_shmctl(int shmid, int cmd, void __user *uptr);
#endif /* CONFIG_COMPAT */