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| author | Dominik Brodowski <linux@dominikbrodowski.net> | 2018-03-20 20:07:53 +0100 |
|---|---|---|
| committer | Dominik Brodowski <linux@dominikbrodowski.net> | 2018-04-02 20:15:24 +0200 |
| commit | 65749e0bb5e7de876ee43d3f601e32afe17e9248 (patch) | |
| tree | b660b2e32014e8fb2a405c7d75f7dba0095e1f49 /ipc/shm.c | |
| parent | 3d65661a494a11266500c2532b4f163537c379db (diff) | |
| download | linux-rpi3-65749e0bb5e7de876ee43d3f601e32afe17e9248.tar.gz linux-rpi3-65749e0bb5e7de876ee43d3f601e32afe17e9248.tar.bz2 linux-rpi3-65749e0bb5e7de876ee43d3f601e32afe17e9248.zip | |
ipc: add shmget syscall wrapper
Provide ksys_shmget() 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_shmget().
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/shm.c')
| -rw-r--r-- | ipc/shm.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/ipc/shm.c b/ipc/shm.c index 4643865e9171..9f3cdb259a51 100644 --- a/ipc/shm.c +++ b/ipc/shm.c @@ -656,7 +656,7 @@ static inline int shm_more_checks(struct kern_ipc_perm *ipcp, return 0; } -SYSCALL_DEFINE3(shmget, key_t, key, size_t, size, int, shmflg) +long ksys_shmget(key_t key, size_t size, int shmflg) { struct ipc_namespace *ns; static const struct ipc_ops shm_ops = { @@ -675,6 +675,11 @@ SYSCALL_DEFINE3(shmget, key_t, key, size_t, size, int, shmflg) return ipcget(ns, &shm_ids(ns), &shm_ops, &shm_params); } +SYSCALL_DEFINE3(shmget, key_t, key, size_t, size, int, shmflg) +{ + return ksys_shmget(key, size, shmflg); +} + static inline unsigned long copy_shmid_to_user(void __user *buf, struct shmid64_ds *in, int version) { switch (version) { |