From: Eric Biggers <ebiggers@google.com>
Date: Wed, 9 Oct 2019 16:04:43 -0700
Subject: KEYS: remove CONFIG_KEYS_COMPAT
Patch-mainline: v5.5-rc3
Git-commit: 601f0093f2647db67be40b62e13cd0660990a7c8
References: jsc#SLE-15209
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(Also remove an outdated comment from compat.c.)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>
Acked-by: Lee, Chun-Yi <jlee@suse.com>
---
security/keys/Kconfig | 4 ----
security/keys/Makefile | 2 +-
security/keys/compat.c | 5 -----
security/keys/internal.h | 4 ++--
4 files changed, 3 insertions(+), 12 deletions(-)
--- a/security/keys/Kconfig
+++ b/security/keys/Kconfig
@@ -21,10 +21,6 @@ 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 KEYS_REQUEST_CACHE
bool "Enable temporary caching of the last request_key() result"
depends on KEYS
--- a/security/keys/Makefile
+++ b/security/keys/Makefile
@@ -17,7 +17,7 @@ obj-y := \
request_key_auth.o \
user_defined.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-$(CONFIG_SYSCTL) += sysctl.o
obj-$(CONFIG_PERSISTENT_KEYRINGS) += persistent.o
--- a/security/keys/compat.c
+++ b/security/keys/compat.c
@@ -46,11 +46,6 @@ static long compat_keyctl_instantiate_ke
/*
* 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,
u32, arg2, u32, arg3, u32, arg4, u32, arg5)
--- a/security/keys/internal.h
+++ b/security/keys/internal.h
@@ -264,7 +264,7 @@ extern long keyctl_dh_compute(struct key
size_t, struct keyctl_kdf_params __user *);
extern long __keyctl_dh_compute(struct keyctl_dh_params __user *, char __user *,
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,
char __user *buffer, size_t buflen,
struct compat_keyctl_kdf_params __user *kdf);
@@ -279,7 +279,7 @@ static inline long keyctl_dh_compute(str
return -EOPNOTSUPP;
}
-#ifdef CONFIG_KEYS_COMPAT
+#ifdef CONFIG_COMPAT
static inline long compat_keyctl_dh_compute(
struct keyctl_dh_params __user *params,
char __user *buffer, size_t buflen,