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authorArnd Bergmann <arnd@arndb.de>2019-01-16 14:15:20 +0100
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2019-01-18 09:33:18 +0100
commit58fa4a410fc31afe08d0d0c6b6d8860c22ec17c2 (patch)
tree77b202fac335c9b4e142360ccab85e75fcd6f05e /ipc
parent1ecff5ef0a70e7fd32a0b9cf6ad7ac8285462697 (diff)
downloadlinux-stericsson-58fa4a410fc31afe08d0d0c6b6d8860c22ec17c2.tar.gz
ipc: introduce ksys_ipc()/compat_ksys_ipc() for s390
The sys_ipc() and compat_ksys_ipc() functions are meant to only be used from the system call table, not called by another function. Introduce ksys_*() interfaces for this purpose, as we have done for many other system calls. Link: https://lore.kernel.org/lkml/20190116131527.2071570-3-arnd@arndb.de Signed-off-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Heiko Carstens <heiko.carstens@de.ibm.com> [heiko.carstens@de.ibm.com: compile fix for !CONFIG_COMPAT] Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'ipc')
-rw-r--r--ipc/syscall.c20
1 files changed, 16 insertions, 4 deletions
diff --git a/ipc/syscall.c b/ipc/syscall.c
index 1ac06e3983c0..3cf8ad703a4d 100644
--- a/ipc/syscall.c
+++ b/ipc/syscall.c
@@ -17,8 +17,8 @@
#include <linux/shm.h>
#include <linux/uaccess.h>
-SYSCALL_DEFINE6(ipc, unsigned int, call, int, first, unsigned long, second,
- unsigned long, third, void __user *, ptr, long, fifth)
+int ksys_ipc(unsigned int call, int first, unsigned long second,
+ unsigned long third, void __user * ptr, long fifth)
{
int version, ret;
@@ -106,6 +106,12 @@ SYSCALL_DEFINE6(ipc, unsigned int, call, int, first, unsigned long, second,
return -ENOSYS;
}
}
+
+SYSCALL_DEFINE6(ipc, unsigned int, call, int, first, unsigned long, second,
+ unsigned long, third, void __user *, ptr, long, fifth)
+{
+ return ksys_ipc(call, first, second, third, ptr, fifth);
+}
#endif
#ifdef CONFIG_COMPAT
@@ -121,8 +127,8 @@ struct compat_ipc_kludge {
};
#ifdef CONFIG_ARCH_WANT_OLD_COMPAT_IPC
-COMPAT_SYSCALL_DEFINE6(ipc, u32, call, int, first, int, second,
- u32, third, compat_uptr_t, ptr, u32, fifth)
+int compat_ksys_ipc(u32 call, int first, int second,
+ u32 third, compat_uptr_t ptr, u32 fifth)
{
int version;
u32 pad;
@@ -195,5 +201,11 @@ COMPAT_SYSCALL_DEFINE6(ipc, u32, call, int, first, int, second,
return -ENOSYS;
}
+
+COMPAT_SYSCALL_DEFINE6(ipc, u32, call, int, first, int, second,
+ u32, third, compat_uptr_t, ptr, u32, fifth)
+{
+ return compat_ksys_ipc(call, first, second, third, ptr, fifth);
+}
#endif
#endif