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| author | Dominik Brodowski <linux@dominikbrodowski.net> | 2018-03-20 20:15:28 +0100 |
|---|---|---|
| committer | Dominik Brodowski <linux@dominikbrodowski.net> | 2018-04-02 20:15:26 +0200 |
| commit | e340db56483b6e10bd5e5f281071876808801a41 (patch) | |
| tree | 12c427cf6f010120b983f133965cf8157a892c2d /ipc/syscall.c | |
| parent | c84d0791dfa7fe8f051082c09a558eb3e2d01931 (diff) | |
| download | lwn-e340db56483b6e10bd5e5f281071876808801a41.tar.gz lwn-e340db56483b6e10bd5e5f281071876808801a41.zip | |
ipc: add msgctl syscall/compat_syscall wrappers
Provide ksys_msgctl() and compat_ksys_msgctl() 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_msgctl() and compat_sys_msgctl().
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/syscall.c')
| -rw-r--r-- | ipc/syscall.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/ipc/syscall.c b/ipc/syscall.c index 34bbabc9e672..aa29b0802e26 100644 --- a/ipc/syscall.c +++ b/ipc/syscall.c @@ -70,7 +70,8 @@ SYSCALL_DEFINE6(ipc, unsigned int, call, int, first, unsigned long, second, case MSGGET: return ksys_msgget((key_t) first, second); case MSGCTL: - return sys_msgctl(first, second, (struct msqid_ds __user *)ptr); + return ksys_msgctl(first, second, + (struct msqid_ds __user *)ptr); case SHMAT: switch (version) { @@ -163,7 +164,7 @@ COMPAT_SYSCALL_DEFINE6(ipc, u32, call, int, first, int, second, case MSGGET: return ksys_msgget(first, second); case MSGCTL: - return compat_sys_msgctl(first, second, compat_ptr(ptr)); + return compat_ksys_msgctl(first, second, compat_ptr(ptr)); case SHMAT: { int err; |