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KEYS: remove CONFIG_KEYS_COMPAT 

KEYS_COMPAT now always takes the value of COMPAT && KEYS.  But the
security/keys/ directory is only compiled if KEYS is enabled, so in
practice KEYS_COMPAT is the same as COMPAT.  Therefore, remove the
unnecessary KEYS_COMPAT and just use COMPAT directly.

(Also remove an outdated comment from compat.c.)

Reviewed-by: James Morris <jamorris@linux.microsoft.com>
Signed-off-by: Eric Biggers <ebiggers@google.com>
Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Tested-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
This commit is contained in:
Eric Biggers 2019-10-09 16:04:43 -07:00 committed by Jarkko Sakkinen
parent 37d4e84f76
commit 601f0093f2
4 changed files with 3 additions and 12 deletions
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4
security/keys/Kconfig
View File

@ -21,10 +21,6 @@ config KEYS
If you are unsure as to whether this is required, answer N. If you are unsure as to whether this is required, answer N.
config KEYS_COMPAT
def_bool y
depends on COMPAT && KEYS
config KEYS_REQUEST_CACHE config KEYS_REQUEST_CACHE
bool "Enable temporary caching of the last request_key() result" bool "Enable temporary caching of the last request_key() result"
depends on KEYS depends on KEYS

2
security/keys/Makefile
View File

@ -17,7 +17,7 @@ obj-y := \
request_key_auth.o \ request_key_auth.o \
user_defined.o user_defined.o
compat-obj-$(CONFIG_KEY_DH_OPERATIONS) += compat_dh.o compat-obj-$(CONFIG_KEY_DH_OPERATIONS) += compat_dh.o
obj-$(CONFIG_KEYS_COMPAT) += compat.o $(compat-obj-y) obj-$(CONFIG_COMPAT) += compat.o $(compat-obj-y)
obj-$(CONFIG_PROC_FS) += proc.o obj-$(CONFIG_PROC_FS) += proc.o
obj-$(CONFIG_SYSCTL) += sysctl.o obj-$(CONFIG_SYSCTL) += sysctl.o
obj-$(CONFIG_PERSISTENT_KEYRINGS) += persistent.o obj-$(CONFIG_PERSISTENT_KEYRINGS) += persistent.o

5
security/keys/compat.c
View File

@ -46,11 +46,6 @@ static long compat_keyctl_instantiate_key_iov(
/* /*
* The key control system call, 32-bit compatibility version for 64-bit archs * The key control system call, 32-bit compatibility version for 64-bit archs
*
* This should only be called if the 64-bit arch uses weird pointers in 32-bit
* mode or doesn't guarantee that the top 32-bits of the argument registers on
* taking a 32-bit syscall are zero. If you can, you should call sys_keyctl()
* directly.
*/ */
COMPAT_SYSCALL_DEFINE5(keyctl, u32, option, COMPAT_SYSCALL_DEFINE5(keyctl, u32, option,
u32, arg2, u32, arg3, u32, arg4, u32, arg5) u32, arg2, u32, arg3, u32, arg4, u32, arg5)

4
security/keys/internal.h
View File

@ -264,7 +264,7 @@ extern long keyctl_dh_compute(struct keyctl_dh_params __user *, char __user *,
size_t, struct keyctl_kdf_params __user *); size_t, struct keyctl_kdf_params __user *);
extern long __keyctl_dh_compute(struct keyctl_dh_params __user *, char __user *, extern long __keyctl_dh_compute(struct keyctl_dh_params __user *, char __user *,
size_t, struct keyctl_kdf_params *); size_t, struct keyctl_kdf_params *);
#ifdef CONFIG_KEYS_COMPAT #ifdef CONFIG_COMPAT
extern long compat_keyctl_dh_compute(struct keyctl_dh_params __user *params, extern long compat_keyctl_dh_compute(struct keyctl_dh_params __user *params,
char __user *buffer, size_t buflen, char __user *buffer, size_t buflen,
struct compat_keyctl_kdf_params __user *kdf); struct compat_keyctl_kdf_params __user *kdf);
@ -279,7 +279,7 @@ static inline long keyctl_dh_compute(struct keyctl_dh_params __user *params,
return -EOPNOTSUPP; return -EOPNOTSUPP;
} }
#ifdef CONFIG_KEYS_COMPAT #ifdef CONFIG_COMPAT
static inline long compat_keyctl_dh_compute( static inline long compat_keyctl_dh_compute(
struct keyctl_dh_params __user *params, struct keyctl_dh_params __user *params,
char __user *buffer, size_t buflen, char __user *buffer, size_t buflen,