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authorArnd Bergmann <arnd@arndb.de>2019-01-16 13:15:21 (GMT)
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2019-01-18 08:33:18 (GMT)
commitfef747bab3c09b30b82f76a391ee0ed83d2d6965 (patch)
tree3a32716e2fd14f6c045240a9a82bdf28bb7b37f5 /arch/s390/include/uapi
parent58fa4a410fc31afe08d0d0c6b6d8860c22ec17c2 (diff)
s390: use generic UID16 implementation
s390 has an almost identical copy of the code in kernel/uid16.c. The problem here is that it requires calling the regular system calls, which the generic implementation handles correctly, but the internal interfaces are not declared in a global header for this. The best way forward here seems to be to just use the generic code and delete the s390 specific implementation. I keep the changes to uapi/asm/posix_types.h inside of an #ifdef check so user space does not observe any changes. As some of the system calls pass pointers, we also need wrappers in compat_wrapper.c, which I add for all calls with at least one argument. All those wrappers can be removed in a later step. Link: https://lore.kernel.org/lkml/20190116131527.2071570-4-arnd@arndb.de Signed-off-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/include/uapi')
-rw-r--r--arch/s390/include/uapi/asm/posix_types.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/s390/include/uapi/asm/posix_types.h b/arch/s390/include/uapi/asm/posix_types.h
index 2a3fc63..1913613 100644
--- a/arch/s390/include/uapi/asm/posix_types.h
+++ b/arch/s390/include/uapi/asm/posix_types.h
@@ -20,6 +20,12 @@ typedef long __kernel_ssize_t;
typedef unsigned short __kernel_old_dev_t;
#define __kernel_old_dev_t __kernel_old_dev_t
+#ifdef __KERNEL__
+typedef unsigned short __kernel_old_uid_t;
+typedef unsigned short __kernel_old_gid_t;
+#define __kernel_old_uid_t __kernel_old_uid_t
+#endif
+
#ifndef __s390x__
typedef unsigned long __kernel_ino_t;

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