Messages in this thread | | | Date | Tue, 3 Mar 2015 09:30:02 +0100 | From | Ingo Molnar <> | Subject | Re: [PATCH v2] seccomp: switch to using asm-generic for seccomp.h |
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* Kees Cook <keescook@chromium.org> wrote:
> Most architectures don't need to do anything special for the strict > seccomp syscall entries. Remove the redundant headers and reduce the > others.
> 19 files changed, 27 insertions(+), 137 deletions(-)
Lovely cleanup factor.
Just to make sure, are you sure the 32-bit details are identical across architectures?
For example some architectures did this:
> --- a/arch/microblaze/include/asm/seccomp.h > +++ /dev/null > @@ -1,16 +0,0 @@ > -#ifndef _ASM_MICROBLAZE_SECCOMP_H > -#define _ASM_MICROBLAZE_SECCOMP_H > - > -#include <linux/unistd.h> > - > -#define __NR_seccomp_read __NR_read > -#define __NR_seccomp_write __NR_write > -#define __NR_seccomp_exit __NR_exit > -#define __NR_seccomp_sigreturn __NR_sigreturn > - > -#define __NR_seccomp_read_32 __NR_read > -#define __NR_seccomp_write_32 __NR_write > -#define __NR_seccomp_exit_32 __NR_exit > -#define __NR_seccomp_sigreturn_32 __NR_sigreturn
others did this:
> diff --git a/arch/x86/include/asm/seccomp_64.h b/arch/x86/include/asm/seccomp_64.h > deleted file mode 100644 > index 84ec1bd161a5..000000000000 > --- a/arch/x86/include/asm/seccomp_64.h > +++ /dev/null > @@ -1,17 +0,0 @@ > -#ifndef _ASM_X86_SECCOMP_64_H > -#define _ASM_X86_SECCOMP_64_H > - > -#include <linux/unistd.h> > -#include <asm/ia32_unistd.h> > - > -#define __NR_seccomp_read __NR_read > -#define __NR_seccomp_write __NR_write > -#define __NR_seccomp_exit __NR_exit > -#define __NR_seccomp_sigreturn __NR_rt_sigreturn > - > -#define __NR_seccomp_read_32 __NR_ia32_read > -#define __NR_seccomp_write_32 __NR_ia32_write > -#define __NR_seccomp_exit_32 __NR_ia32_exit > -#define __NR_seccomp_sigreturn_32 __NR_ia32_sigreturn > - > -#endif /* _ASM_X86_SECCOMP_64_H */
While in yet another case you kept the syscall mappings:
> --- a/arch/x86/include/asm/seccomp.h > +++ b/arch/x86/include/asm/seccomp.h > @@ -1,5 +1,20 @@ > +#ifndef _ASM_X86_SECCOMP_H > +#define _ASM_X86_SECCOMP_H > + > +#include <asm/unistd.h> > + > +#ifdef CONFIG_COMPAT > +#include <asm/ia32_unistd.h> > +#define __NR_seccomp_read_32 __NR_ia32_read > +#define __NR_seccomp_write_32 __NR_ia32_write > +#define __NR_seccomp_exit_32 __NR_ia32_exit > +#define __NR_seccomp_sigreturn_32 __NR_ia32_sigreturn > +#endif > + > #ifdef CONFIG_X86_32 > -# include <asm/seccomp_32.h> > -#else > -# include <asm/seccomp_64.h> > +#define __NR_seccomp_sigreturn __NR_sigreturn > #endif > + > +#include <asm-generic/seccomp.h> > + > +#endif /* _ASM_X86_SECCOMP_H */
It might all be correct, but it's not obvious to me.
Thanks,
Ingo
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