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| author | David Howells <dhowells@redhat.com> | 2012-02-24 18:01:27 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-03-12 12:31:23 -0700 |
| commit | 5798b013af929124c7ec9872719bf94e93c4a923 (patch) | |
| tree | d3bbf6358ef67dc03f3389be9e6732c62e3b4612 /arch/s390 | |
| parent | 8916bd55247c6f75c44c63a97cfa6e7bb2a5e63a (diff) | |
| download | lwn-5798b013af929124c7ec9872719bf94e93c4a923.tar.gz lwn-5798b013af929124c7ec9872719bf94e93c4a923.zip | |
S390: KEYS: Enable the compat keyctl wrapper on s390x
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>
Diffstat (limited to 'arch/s390')
| -rw-r--r-- | arch/s390/Kconfig | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig index 373679b3744a..f929db9a8ae9 100644 --- a/arch/s390/Kconfig +++ b/arch/s390/Kconfig @@ -230,6 +230,9 @@ 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 |