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| author | Dominik Brodowski <linux@dominikbrodowski.net> | 2018-03-20 20:09:48 +0100 |
|---|---|---|
| committer | Dominik Brodowski <linux@dominikbrodowski.net> | 2018-04-02 20:15:25 +0200 |
| commit | da1e2744341542e404c172bcf6a321f509408b14 (patch) | |
| tree | e2404117362bb519750e1f18b4d513c1958fab1b /ipc/util.h | |
| parent | 65749e0bb5e7de876ee43d3f601e32afe17e9248 (diff) | |
| download | lwn-da1e2744341542e404c172bcf6a321f509408b14.tar.gz lwn-da1e2744341542e404c172bcf6a321f509408b14.zip | |
ipc: add shmdt syscall wrapper
Provide ksys_shmdt() wrapper to avoid in-kernel calls to this syscall.
The ksys_ prefix denotes that this function is meant as a drop-in
replacement for the syscall. In particular, it uses the same calling
convention as sys_shmdt().
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 | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/ipc/util.h b/ipc/util.h index 51002c0b2a21..7770bcad1168 100644 --- a/ipc/util.h +++ b/ipc/util.h @@ -244,6 +244,7 @@ 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_shmget(key_t key, size_t size, int shmflg); +long ksys_shmdt(char __user *shmaddr); /* for CONFIG_ARCH_WANT_OLD_COMPAT_IPC */ #ifdef CONFIG_COMPAT |