Messages in this thread Patch in this message | | | Date | Fri, 09 Mar 2012 11:02:27 -0800 | From | Greg KH <> | Subject | [ 13/68] S390: KEYS: Enable the compat keyctl wrapper on s390x |
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3.0-stable review patch. If anyone has any objections, please let me know.
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From: David Howells <dhowells@redhat.com>
commit 1d057720609ed052a6371fe1d53300e5e6328e94 upstream.
Enable the compat keyctl wrapper on s390x so that 32-bit s390 userspace can call the keyctl() syscall.
There's an s390x assembly wrapper that truncates all the register values to 32-bits and this then calls compat_sys_keyctl() - but the latter only exists if CONFIG_KEYS_COMPAT is enabled, and the s390 Kconfig doesn't enable it.
Without this patch, 32-bit calls to the keyctl() syscall are given an ENOSYS error:
[root@devel4 ~]# keyctl show Session Keyring -3: key inaccessible (Function not implemented)
Signed-off-by: David Howells <dhowells@redhat.com> Acked-by: dan@danny.cz Cc: Carsten Otte <cotte@de.ibm.com> Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com> Cc: linux-s390@vger.kernel.org Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--- arch/s390/Kconfig | 3 +++ 1 file changed, 3 insertions(+)
--- a/arch/s390/Kconfig +++ b/arch/s390/Kconfig @@ -228,6 +228,9 @@ config COMPAT config SYSVIPC_COMPAT def_bool y if COMPAT && SYSVIPC +config KEYS_COMPAT + def_bool y if COMPAT && KEYS + config AUDIT_ARCH def_bool y
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