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| author | Dominik Brodowski <linux@dominikbrodowski.net> | 2018-03-20 19:48:14 +0100 |
|---|---|---|
| committer | Dominik Brodowski <linux@dominikbrodowski.net> | 2018-04-02 20:15:21 +0200 |
| commit | 41f4f0e2f5f4cd060885405c04214851ffe7b299 (patch) | |
| tree | 3c465c0218ef422e7d7dd5553c8531479f97d654 /ipc/util.h | |
| parent | 6df354653e8cc07be1f057d9207e1092c0b3963b (diff) | |
| download | lwn-41f4f0e2f5f4cd060885405c04214851ffe7b299.tar.gz lwn-41f4f0e2f5f4cd060885405c04214851ffe7b299.zip | |
ipc: add semtimedop syscall/compat_syscall wrappers
Provide ksys_semtimedop() and compat_ksys_semtimedop() 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_semtimedop() and
compat_sys_semtimedop().
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 | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/ipc/util.h b/ipc/util.h index 89b8ec176fc4..6deadf77547e 100644 --- a/ipc/util.h +++ b/ipc/util.h @@ -235,4 +235,17 @@ static inline int compat_ipc_parse_version(int *cmd) #endif } #endif + +/* for __ARCH_WANT_SYS_IPC */ +long ksys_semtimedop(int semid, struct sembuf __user *tsops, + unsigned int nsops, + const struct timespec __user *timeout); + +/* for CONFIG_ARCH_WANT_OLD_COMPAT_IPC */ +#ifdef CONFIG_COMPAT +long compat_ksys_semtimedop(int semid, struct sembuf __user *tsems, + unsigned int nsops, + const struct compat_timespec __user *timeout); +#endif /* CONFIG_COMPAT */ + #endif |