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| author | Dominik Brodowski <linux@dominikbrodowski.net> | 2018-03-20 19:53:58 +0100 |
|---|---|---|
| committer | Dominik Brodowski <linux@dominikbrodowski.net> | 2018-04-02 20:15:22 +0200 |
| commit | 69894718a515fef7ff633cf354fcd7ed73a88891 (patch) | |
| tree | 1330521d67fa886f829af4d8e5a6677b826eaaf4 /ipc/sem.c | |
| parent | 41f4f0e2f5f4cd060885405c04214851ffe7b299 (diff) | |
| download | linux-rpi3-69894718a515fef7ff633cf354fcd7ed73a88891.tar.gz linux-rpi3-69894718a515fef7ff633cf354fcd7ed73a88891.tar.bz2 linux-rpi3-69894718a515fef7ff633cf354fcd7ed73a88891.zip | |
ipc: add semget syscall wrapper
Provide ksys_semget() 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_semget().
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/sem.c')
| -rw-r--r-- | ipc/sem.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/ipc/sem.c b/ipc/sem.c index e21ceb8b4af1..2e5f7ec7a7db 100644 --- a/ipc/sem.c +++ b/ipc/sem.c @@ -556,7 +556,7 @@ static inline int sem_more_checks(struct kern_ipc_perm *ipcp, return 0; } -SYSCALL_DEFINE3(semget, key_t, key, int, nsems, int, semflg) +long ksys_semget(key_t key, int nsems, int semflg) { struct ipc_namespace *ns; static const struct ipc_ops sem_ops = { @@ -578,6 +578,11 @@ SYSCALL_DEFINE3(semget, key_t, key, int, nsems, int, semflg) return ipcget(ns, &sem_ids(ns), &sem_ops, &sem_params); } +SYSCALL_DEFINE3(semget, key_t, key, int, nsems, int, semflg) +{ + return ksys_semget(key, nsems, semflg); +} + /** * perform_atomic_semop[_slow] - Attempt to perform semaphore * operations on a given array. |