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security/keys: add CONFIG_KEYS_COMPAT to Kconfig

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commit 47b2c3fff4932e6fc17ce13d51a43c6969714e20 upstream.

CONFIG_KEYS_COMPAT is defined in arch-specific Kconfigs and is missing for
several 64-bit architectures : mips, parisc, tile.

At the moment and for those architectures, calling in 32-bit userspace the
keyctl syscall would return an ENOSYS error.

This patch moves the CONFIG_KEYS_COMPAT option to security/keys/Kconfig, to
make sure the compatibility wrapper is registered by default for any 64-bit
architecture as long as it is configured with CONFIG_COMPAT.

[DH: Modified to remove arm64 compat enablement also as requested by Eric
 Biggers]

Signed-off-by: Bilal Amarni <bilal.amarni@gmail.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
cc: Eric Biggers <ebiggers3@gmail.com>
Signed-off-by: James Morris <james.l.morris@oracle.com>
Cc: James Cowgill <james.cowgill@mips.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Bilal Amarni 2017-06-08 14:47:26 +01:00 committed by Greg Kroah-Hartman
parent 11fa335320
commit c8f13916c4
5 changed files with 4 additions and 15 deletions
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5
arch/powerpc/Kconfig
View File

@ -1082,11 +1082,6 @@ source "arch/powerpc/Kconfig.debug"
source "security/Kconfig"
config KEYS_COMPAT
bool
depends on COMPAT && KEYS
default y
source "crypto/Kconfig"
config PPC_LIB_RHEAP

3
arch/s390/Kconfig
View File

@ -346,9 +346,6 @@ config COMPAT
config SYSVIPC_COMPAT
def_bool y if COMPAT && SYSVIPC
config KEYS_COMPAT
def_bool y if COMPAT && KEYS
config SMP
def_bool y
prompt "Symmetric multi-processing support"

3
arch/sparc/Kconfig
View File

@ -549,9 +549,6 @@ config SYSVIPC_COMPAT
depends on COMPAT && SYSVIPC
default y
config KEYS_COMPAT
def_bool y if COMPAT && KEYS
endmenu
source "net/Kconfig"

4
arch/x86/Kconfig
View File

@ -2641,10 +2641,6 @@ config COMPAT_FOR_U64_ALIGNMENT
config SYSVIPC_COMPAT
def_bool y
depends on SYSVIPC
config KEYS_COMPAT
def_bool y
depends on KEYS
endif
endmenu

4
security/keys/Kconfig
View File

@ -20,6 +20,10 @@ config KEYS
If you are unsure as to whether this is required, answer N.
config KEYS_COMPAT
def_bool y
depends on COMPAT && KEYS
config PERSISTENT_KEYRINGS
bool "Enable register of persistent per-UID keyrings"
depends on KEYS