diff mbox

[v5,4/4] arm64: is_compat_task is defined both in asm/compat.h and linux/compat.h

Message ID 1394861948-28712-5-git-send-email-takahiro.akashi@linaro.org
State Superseded
Headers show

Commit Message

AKASHI Takahiro March 15, 2014, 5:39 a.m. UTC
Some kernel files may include both linux/compat.h and asm/compat.h directly
or indirectly. Since both header files contain is_compat_task() under
!CONFIG_COMPAT, compiling them with !CONFIG_COMPAT will eventually fail.
Such files include kernel/auditsc.c, kernel/seccomp.c and init/do_mountfs.c
(do_mountfs.c may read asm/compat.h via asm/ftrace.h once ftrace is
implemented).

So this patch proactively
1) removes is_compat_task() under !CONFIG_COMPAT from asm/compat.h
2) replaces asm/compat.h to linux/compat.h in kernel/*.c,
   but asm/compat.h is still necessary in ptrace.c and process.c because
   they use is_compat_thread().

Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
---
 arch/arm64/include/asm/compat.h   | 5 -----
 arch/arm64/kernel/hw_breakpoint.c | 2 +-
 arch/arm64/kernel/process.c       | 1 +
 arch/arm64/kernel/ptrace.c        | 1 +
 arch/arm64/kernel/signal.c        | 2 +-
 5 files changed, 4 insertions(+), 7 deletions(-)

Comments

Richard Guy Briggs March 16, 2014, 7:48 p.m. UTC | #1
On 14/03/15, AKASHI Takahiro wrote:
> Some kernel files may include both linux/compat.h and asm/compat.h directly
> or indirectly. Since both header files contain is_compat_task() under
> !CONFIG_COMPAT, compiling them with !CONFIG_COMPAT will eventually fail.
> Such files include kernel/auditsc.c, kernel/seccomp.c and init/do_mountfs.c
> (do_mountfs.c may read asm/compat.h via asm/ftrace.h once ftrace is
> implemented).
> 
> So this patch proactively
> 1) removes is_compat_task() under !CONFIG_COMPAT from asm/compat.h
> 2) replaces asm/compat.h to linux/compat.h in kernel/*.c,
>    but asm/compat.h is still necessary in ptrace.c and process.c because
>    they use is_compat_thread().
> 
> Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>

Acked-by: Richard Guy Briggs <rgb@redhat.com>

> ---
>  arch/arm64/include/asm/compat.h   | 5 -----
>  arch/arm64/kernel/hw_breakpoint.c | 2 +-
>  arch/arm64/kernel/process.c       | 1 +
>  arch/arm64/kernel/ptrace.c        | 1 +
>  arch/arm64/kernel/signal.c        | 2 +-
>  5 files changed, 4 insertions(+), 7 deletions(-)
> 
> diff --git a/arch/arm64/include/asm/compat.h b/arch/arm64/include/asm/compat.h
> index fda2704..3b334f9 100644
> --- a/arch/arm64/include/asm/compat.h
> +++ b/arch/arm64/include/asm/compat.h
> @@ -305,11 +305,6 @@ static inline int is_compat_thread(struct thread_info *thread)
>  
>  #else /* !CONFIG_COMPAT */
>  
> -static inline int is_compat_task(void)
> -{
> -	return 0;
> -}
> -
>  static inline int is_compat_thread(struct thread_info *thread)
>  {
>  	return 0;
> diff --git a/arch/arm64/kernel/hw_breakpoint.c b/arch/arm64/kernel/hw_breakpoint.c
> index f17f581..a45e2db 100644
> --- a/arch/arm64/kernel/hw_breakpoint.c
> +++ b/arch/arm64/kernel/hw_breakpoint.c
> @@ -20,6 +20,7 @@
>  
>  #define pr_fmt(fmt) "hw-breakpoint: " fmt
>  
> +#include <linux/compat.h>
>  #include <linux/cpu_pm.h>
>  #include <linux/errno.h>
>  #include <linux/hw_breakpoint.h>
> @@ -27,7 +28,6 @@
>  #include <linux/ptrace.h>
>  #include <linux/smp.h>
>  
> -#include <asm/compat.h>
>  #include <asm/current.h>
>  #include <asm/debug-monitors.h>
>  #include <asm/hw_breakpoint.h>
> diff --git a/arch/arm64/kernel/process.c b/arch/arm64/kernel/process.c
> index 1c0a9be..fc8a387 100644
> --- a/arch/arm64/kernel/process.c
> +++ b/arch/arm64/kernel/process.c
> @@ -20,6 +20,7 @@
>  
>  #include <stdarg.h>
>  
> +#include <linux/compat.h>
>  #include <linux/export.h>
>  #include <linux/sched.h>
>  #include <linux/kernel.h>
> diff --git a/arch/arm64/kernel/ptrace.c b/arch/arm64/kernel/ptrace.c
> index f606276..c47a3ed 100644
> --- a/arch/arm64/kernel/ptrace.c
> +++ b/arch/arm64/kernel/ptrace.c
> @@ -19,6 +19,7 @@
>   * along with this program.  If not, see <http://www.gnu.org/licenses/>.
>   */
>  
> +#include <linux/compat.h>
>  #include <linux/kernel.h>
>  #include <linux/sched.h>
>  #include <linux/mm.h>
> diff --git a/arch/arm64/kernel/signal.c b/arch/arm64/kernel/signal.c
> index 890a591..4a09989 100644
> --- a/arch/arm64/kernel/signal.c
> +++ b/arch/arm64/kernel/signal.c
> @@ -17,6 +17,7 @@
>   * along with this program.  If not, see <http://www.gnu.org/licenses/>.
>   */
>  
> +#include <linux/compat.h>
>  #include <linux/errno.h>
>  #include <linux/signal.h>
>  #include <linux/personality.h>
> @@ -25,7 +26,6 @@
>  #include <linux/tracehook.h>
>  #include <linux/ratelimit.h>
>  
> -#include <asm/compat.h>
>  #include <asm/debug-monitors.h>
>  #include <asm/elf.h>
>  #include <asm/cacheflush.h>
> -- 
> 1.8.3.2
> 

- RGB

--
Richard Guy Briggs <rbriggs@redhat.com>
Senior Software Engineer, Kernel Security, AMER ENG Base Operating Systems, Red Hat
Remote, Ottawa, Canada
Voice: +1.647.777.2635, Internal: (81) 32635, Alt: +1.613.693.0684x3545
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/
Will Deacon April 16, 2014, 1:29 p.m. UTC | #2
On Sat, Mar 15, 2014 at 05:39:08AM +0000, AKASHI Takahiro wrote:
> Some kernel files may include both linux/compat.h and asm/compat.h directly
> or indirectly. Since both header files contain is_compat_task() under
> !CONFIG_COMPAT, compiling them with !CONFIG_COMPAT will eventually fail.
> Such files include kernel/auditsc.c, kernel/seccomp.c and init/do_mountfs.c
> (do_mountfs.c may read asm/compat.h via asm/ftrace.h once ftrace is
> implemented).
> 
> So this patch proactively
> 1) removes is_compat_task() under !CONFIG_COMPAT from asm/compat.h
> 2) replaces asm/compat.h to linux/compat.h in kernel/*.c,
>    but asm/compat.h is still necessary in ptrace.c and process.c because
>    they use is_compat_thread().
> 
> Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>

  Acked-by: Will Deacon <will.deacon@arm.com>

Will
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/
diff mbox

Patch

diff --git a/arch/arm64/include/asm/compat.h b/arch/arm64/include/asm/compat.h
index fda2704..3b334f9 100644
--- a/arch/arm64/include/asm/compat.h
+++ b/arch/arm64/include/asm/compat.h
@@ -305,11 +305,6 @@  static inline int is_compat_thread(struct thread_info *thread)
 
 #else /* !CONFIG_COMPAT */
 
-static inline int is_compat_task(void)
-{
-	return 0;
-}
-
 static inline int is_compat_thread(struct thread_info *thread)
 {
 	return 0;
diff --git a/arch/arm64/kernel/hw_breakpoint.c b/arch/arm64/kernel/hw_breakpoint.c
index f17f581..a45e2db 100644
--- a/arch/arm64/kernel/hw_breakpoint.c
+++ b/arch/arm64/kernel/hw_breakpoint.c
@@ -20,6 +20,7 @@ 
 
 #define pr_fmt(fmt) "hw-breakpoint: " fmt
 
+#include <linux/compat.h>
 #include <linux/cpu_pm.h>
 #include <linux/errno.h>
 #include <linux/hw_breakpoint.h>
@@ -27,7 +28,6 @@ 
 #include <linux/ptrace.h>
 #include <linux/smp.h>
 
-#include <asm/compat.h>
 #include <asm/current.h>
 #include <asm/debug-monitors.h>
 #include <asm/hw_breakpoint.h>
diff --git a/arch/arm64/kernel/process.c b/arch/arm64/kernel/process.c
index 1c0a9be..fc8a387 100644
--- a/arch/arm64/kernel/process.c
+++ b/arch/arm64/kernel/process.c
@@ -20,6 +20,7 @@ 
 
 #include <stdarg.h>
 
+#include <linux/compat.h>
 #include <linux/export.h>
 #include <linux/sched.h>
 #include <linux/kernel.h>
diff --git a/arch/arm64/kernel/ptrace.c b/arch/arm64/kernel/ptrace.c
index f606276..c47a3ed 100644
--- a/arch/arm64/kernel/ptrace.c
+++ b/arch/arm64/kernel/ptrace.c
@@ -19,6 +19,7 @@ 
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
+#include <linux/compat.h>
 #include <linux/kernel.h>
 #include <linux/sched.h>
 #include <linux/mm.h>
diff --git a/arch/arm64/kernel/signal.c b/arch/arm64/kernel/signal.c
index 890a591..4a09989 100644
--- a/arch/arm64/kernel/signal.c
+++ b/arch/arm64/kernel/signal.c
@@ -17,6 +17,7 @@ 
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
+#include <linux/compat.h>
 #include <linux/errno.h>
 #include <linux/signal.h>
 #include <linux/personality.h>
@@ -25,7 +26,6 @@ 
 #include <linux/tracehook.h>
 #include <linux/ratelimit.h>
 
-#include <asm/compat.h>
 #include <asm/debug-monitors.h>
 #include <asm/elf.h>
 #include <asm/cacheflush.h>