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| author | Dominik Brodowski <linux@dominikbrodowski.net> | 2018-03-20 23:25:57 +0300 |
|---|---|---|
| committer | Dominik Brodowski <linux@dominikbrodowski.net> | 2018-04-02 21:15:27 +0300 |
| commit | 078faac9e8b6c8124bc012bbf97cca59caf6d4ea (patch) | |
| tree | 565af5f9110fd70f649f41af3b296077fd3aa646 /ipc/util.h | |
| parent | e340db56483b6e10bd5e5f281071876808801a41 (diff) | |
| download | linux-078faac9e8b6c8124bc012bbf97cca59caf6d4ea.tar.xz | |
ipc: add msgrcv syscall/compat_syscall wrappers
Provide ksys_msgrcv() and compat_ksys_msgrcv() 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_msgrcv() and compat_sys_msgrcv().
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.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/ipc/util.h b/ipc/util.h index 47837b4af3f2..c16aceb1bdec 100644 --- a/ipc/util.h +++ b/ipc/util.h @@ -244,6 +244,8 @@ long ksys_semget(key_t key, int nsems, int semflg); long ksys_semctl(int semid, int semnum, int cmd, unsigned long arg); 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_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); @@ -255,6 +257,8 @@ long compat_ksys_semtimedop(int semid, struct sembuf __user *tsems, const struct compat_timespec __user *timeout); 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_shmctl(int shmid, int cmd, void __user *uptr); #endif /* CONFIG_COMPAT */ |