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authorDominik Brodowski <linux@dominikbrodowski.net>2018-03-20 21:25:57 +0100
committerDominik Brodowski <linux@dominikbrodowski.net>2018-04-02 20:15:27 +0200
commit078faac9e8b6c8124bc012bbf97cca59caf6d4ea (patch)
tree565af5f9110fd70f649f41af3b296077fd3aa646 /ipc/syscall.c
parentipc: add msgctl syscall/compat_syscall wrappers (diff)
downloadlinux-dev-078faac9e8b6c8124bc012bbf97cca59caf6d4ea.tar.xz
linux-dev-078faac9e8b6c8124bc012bbf97cca59caf6d4ea.zip
ipc: add msgrcv syscall/compat_syscall wrappers
Provide ksys_msgrcv() and compat_ksys_msgrcv() 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_msgrcv() and compat_sys_msgrcv(). 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.c8
1 files changed, 4 insertions, 4 deletions
diff --git a/ipc/syscall.c b/ipc/syscall.c
index aa29b0802e26..0228c7afd882 100644
--- a/ipc/syscall.c
+++ b/ipc/syscall.c
@@ -59,11 +59,11 @@ SYSCALL_DEFINE6(ipc, unsigned int, call, int, first, unsigned long, second,
(struct ipc_kludge __user *) ptr,
sizeof(tmp)))
return -EFAULT;
- return sys_msgrcv(first, tmp.msgp, second,
+ return ksys_msgrcv(first, tmp.msgp, second,
tmp.msgtyp, third);
}
default:
- return sys_msgrcv(first,
+ return ksys_msgrcv(first,
(struct msgbuf __user *) ptr,
second, fifth, third);
}
@@ -156,10 +156,10 @@ COMPAT_SYSCALL_DEFINE6(ipc, u32, call, int, first, int, second,
return -EINVAL;
if (copy_from_user(&ipck, uptr, sizeof(ipck)))
return -EFAULT;
- return compat_sys_msgrcv(first, ipck.msgp, second,
+ return compat_ksys_msgrcv(first, ipck.msgp, second,
ipck.msgtyp, third);
}
- return compat_sys_msgrcv(first, ptr, second, fifth, third);
+ return compat_ksys_msgrcv(first, ptr, second, fifth, third);
}
case MSGGET:
return ksys_msgget(first, second);