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| author | Arnd Bergmann <arnd@arndb.de> | 2019-01-16 14:15:20 +0100 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2019-01-18 09:33:18 +0100 |
| commit | 58fa4a410fc31afe08d0d0c6b6d8860c22ec17c2 (patch) | |
| tree | 77b202fac335c9b4e142360ccab85e75fcd6f05e /ipc/syscall.c | |
| parent | 1ecff5ef0a70e7fd32a0b9cf6ad7ac8285462697 (diff) | |
| download | lwn-58fa4a410fc31afe08d0d0c6b6d8860c22ec17c2.tar.gz lwn-58fa4a410fc31afe08d0d0c6b6d8860c22ec17c2.zip | |
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/syscall.c')
| -rw-r--r-- | ipc/syscall.c | 20 |
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 |