| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-ID: <48603CB8.1020903@snapgear.com>
Date: Tue, 24 Jun 2008 10:15:52 +1000
From: Greg Ungerer <gerg@...pgear.com>
To: Adrian Bunk <bunk@...nel.org>
CC: Roland McGrath <roland@...hat.com>, linux-kernel@...r.kernel.org,
rmk@....linux.org.uk, cooloney@...nel.org, dev-etrax@...s.com,
dhowells@...hat.com, gerg@...inux.org,
yasutake.koichi@...panasonic.com, linux-parisc@...r.kernel.org,
paulus@...ba.org, linuxppc-dev@...abs.org,
linux-sh@...r.kernel.org, chris@...kel.net,
linux-mips@...ux-mips.org, ysato@...rs.sourceforge.jp,
Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [2.6 patch] asm/ptrace.h userspace headers cleanup
Hi Adrian,
Adrian Bunk wrote:
> This patch contains the following cleanups for the asm/ptrace.h
> userspace headers:
> - include/asm-generic/Kbuild.asm already lists ptrace.h, remove
> the superfluous listings in the Kbuild files of the following
> architectures:
> - cris
> - frv
> - powerpc
> - x86
> - don't expose function prototypes and macros to userspace:
> - arm
> - blackfin
> - cris
> - mn10300
> - parisc
> - remove #ifdef CONFIG_'s around #define's:
> - blackfin
> - m68knommu
> - sh: AFAIK __SH5__ should work in both kernel and userspace,
> no need to leak CONFIG_SUPERH64 to userspace
> - xtensa: cosmetical change to remove empty
> #ifndef __ASSEMBLY__ #else #endif
> from the userspace headers
>
> Signed-off-by: Adrian Bunk <bunk@...nel.org>
The m68knommu looks ok.
Acked-by: Greg Ungerer <gerg@...inux.org>
> ---
>
> Not changed by this patch is the fact that the following architectures
> have a different struct pt_regs depending on CONFIG_ variables:
> - h8300
> - m68knommu
> - mips
>
> This does not work in userspace.
Let me do something about that for m68knommu.
Regards
Greg
> include/asm-arm/ptrace.h | 6 ++----
> include/asm-blackfin/ptrace.h | 6 ++++--
> include/asm-cris/arch-v10/Kbuild | 1 -
> include/asm-cris/arch-v10/ptrace.h | 4 ++++
> include/asm-cris/arch-v32/Kbuild | 1 -
> include/asm-cris/arch-v32/ptrace.h | 4 ++++
> include/asm-cris/ptrace.h | 4 +++-
> include/asm-frv/Kbuild | 1 -
> include/asm-m68knommu/ptrace.h | 2 --
> include/asm-mn10300/ptrace.h | 8 ++++++--
> include/asm-parisc/ptrace.h | 4 +++-
> include/asm-powerpc/Kbuild | 1 -
> include/asm-sh/ptrace.h | 2 +-
> include/asm-x86/Kbuild | 1 -
> include/asm-xtensa/ptrace.h | 10 +++++-----
> 15 files changed, 32 insertions(+), 23 deletions(-)
>
> fc14755b77cff7af5ff00e938a4c493a669e25cd diff --git a/include/asm-arm/ptrace.h b/include/asm-arm/ptrace.h
> index 7aaa206..8382b75 100644
> --- a/include/asm-arm/ptrace.h
> +++ b/include/asm-arm/ptrace.h
> @@ -139,8 +139,6 @@ static inline int valid_user_regs(struct pt_regs *regs)
> return 0;
> }
>
> -#endif /* __KERNEL__ */
> -
> #define pc_pointer(v) \
> ((v) & ~PCMASK)
>
> @@ -153,10 +151,10 @@ extern unsigned long profile_pc(struct pt_regs *regs);
> #define profile_pc(regs) instruction_pointer(regs)
> #endif
>
> -#ifdef __KERNEL__
> #define predicate(x) ((x) & 0xf0000000)
> #define PREDICATE_ALWAYS 0xe0000000
> -#endif
> +
> +#endif /* __KERNEL__ */
>
> #endif /* __ASSEMBLY__ */
>
> diff --git a/include/asm-blackfin/ptrace.h b/include/asm-blackfin/ptrace.h
> index b8346cd..a45a80e 100644
> --- a/include/asm-blackfin/ptrace.h
> +++ b/include/asm-blackfin/ptrace.h
> @@ -83,14 +83,14 @@ struct pt_regs {
> #define PTRACE_GETREGS 12
> #define PTRACE_SETREGS 13 /* ptrace signal */
>
> -#ifdef CONFIG_BINFMT_ELF_FDPIC
> #define PTRACE_GETFDPIC 31
> #define PTRACE_GETFDPIC_EXEC 0
> #define PTRACE_GETFDPIC_INTERP 1
> -#endif
>
> #define PS_S (0x0002)
>
> +#ifdef __KERNEL__
> +
> /* user_mode returns true if only one bit is set in IPEND, other than the
> master interrupt enable. */
> #define user_mode(regs) (!(((regs)->ipend & ~0x10) & (((regs)->ipend & ~0x10) - 1)))
> @@ -98,6 +98,8 @@ struct pt_regs {
> #define profile_pc(regs) instruction_pointer(regs)
> extern void show_regs(struct pt_regs *);
>
> +#endif /* __KERNEL__ */
> +
> #endif /* __ASSEMBLY__ */
>
> /*
> diff --git a/include/asm-cris/arch-v10/Kbuild b/include/asm-cris/arch-v10/Kbuild
> index 60e7e1b..7a192e1 100644
> --- a/include/asm-cris/arch-v10/Kbuild
> +++ b/include/asm-cris/arch-v10/Kbuild
> @@ -1,4 +1,3 @@
> -header-y += ptrace.h
> header-y += user.h
> header-y += svinto.h
> header-y += sv_addr_ag.h
> diff --git a/include/asm-cris/arch-v10/ptrace.h b/include/asm-cris/arch-v10/ptrace.h
> index fb14c5e..2f464ea 100644
> --- a/include/asm-cris/arch-v10/ptrace.h
> +++ b/include/asm-cris/arch-v10/ptrace.h
> @@ -106,10 +106,14 @@ struct switch_stack {
> unsigned long return_ip; /* ip that _resume will return to */
> };
>
> +#ifdef __KERNEL__
> +
> /* bit 8 is user-mode flag */
> #define user_mode(regs) (((regs)->dccr & 0x100) != 0)
> #define instruction_pointer(regs) ((regs)->irp)
> #define profile_pc(regs) instruction_pointer(regs)
> extern void show_regs(struct pt_regs *);
>
> +#endif /* __KERNEL__ */
> +
> #endif
> diff --git a/include/asm-cris/arch-v32/Kbuild b/include/asm-cris/arch-v32/Kbuild
> index a0ec545..35f2fc4 100644
> --- a/include/asm-cris/arch-v32/Kbuild
> +++ b/include/asm-cris/arch-v32/Kbuild
> @@ -1,3 +1,2 @@
> -header-y += ptrace.h
> header-y += user.h
> header-y += cryptocop.h
> diff --git a/include/asm-cris/arch-v32/ptrace.h b/include/asm-cris/arch-v32/ptrace.h
> index 516cc70..41f4e86 100644
> --- a/include/asm-cris/arch-v32/ptrace.h
> +++ b/include/asm-cris/arch-v32/ptrace.h
> @@ -106,9 +106,13 @@ struct switch_stack {
> unsigned long return_ip; /* ip that _resume will return to */
> };
>
> +#ifdef __KERNEL__
> +
> #define user_mode(regs) (((regs)->ccs & (1 << (U_CCS_BITNR + CCS_SHIFT))) != 0)
> #define instruction_pointer(regs) ((regs)->erp)
> extern void show_regs(struct pt_regs *);
> #define profile_pc(regs) instruction_pointer(regs)
>
> +#endif /* __KERNEL__ */
> +
> #endif
> diff --git a/include/asm-cris/ptrace.h b/include/asm-cris/ptrace.h
> index 1ec69a7..d910925 100644
> --- a/include/asm-cris/ptrace.h
> +++ b/include/asm-cris/ptrace.h
> @@ -4,11 +4,13 @@
> #include <asm/arch/ptrace.h>
>
> #ifdef __KERNEL__
> +
> /* Arbitrarily choose the same ptrace numbers as used by the Sparc code. */
> #define PTRACE_GETREGS 12
> #define PTRACE_SETREGS 13
> -#endif
>
> #define profile_pc(regs) instruction_pointer(regs)
>
> +#endif /* __KERNEL__ */
> +
> #endif /* _CRIS_PTRACE_H */
> diff --git a/include/asm-frv/Kbuild b/include/asm-frv/Kbuild
> index bc3f12c..0f8956d 100644
> --- a/include/asm-frv/Kbuild
> +++ b/include/asm-frv/Kbuild
> @@ -3,4 +3,3 @@ include include/asm-generic/Kbuild.asm
> header-y += registers.h
>
> unifdef-y += termios.h
> -unifdef-y += ptrace.h
> diff --git a/include/asm-m68knommu/ptrace.h b/include/asm-m68knommu/ptrace.h
> index 47258e8..8c9194b 100644
> --- a/include/asm-m68knommu/ptrace.h
> +++ b/include/asm-m68knommu/ptrace.h
> @@ -68,10 +68,8 @@ struct switch_stack {
> /* Arbitrarily choose the same ptrace numbers as used by the Sparc code. */
> #define PTRACE_GETREGS 12
> #define PTRACE_SETREGS 13
> -#ifdef CONFIG_FPU
> #define PTRACE_GETFPREGS 14
> #define PTRACE_SETFPREGS 15
> -#endif
>
> #ifdef __KERNEL__
>
> diff --git a/include/asm-mn10300/ptrace.h b/include/asm-mn10300/ptrace.h
> index b368468..7b06cc6 100644
> --- a/include/asm-mn10300/ptrace.h
> +++ b/include/asm-mn10300/ptrace.h
> @@ -88,12 +88,16 @@ extern struct pt_regs *__frame; /* current frame pointer */
> /* options set using PTRACE_SETOPTIONS */
> #define PTRACE_O_TRACESYSGOOD 0x00000001
>
> -#if defined(__KERNEL__) && !defined(__ASSEMBLY__)
> +#if defined(__KERNEL__)
> +
> +#if !defined(__ASSEMBLY__)
> #define user_mode(regs) (((regs)->epsw & EPSW_nSL) == EPSW_nSL)
> #define instruction_pointer(regs) ((regs)->pc)
> extern void show_regs(struct pt_regs *);
> -#endif
> +#endif /* !__ASSEMBLY */
>
> #define profile_pc(regs) ((regs)->pc)
>
> +#endif /* __KERNEL__ */
> +
> #endif /* _ASM_PTRACE_H */
> diff --git a/include/asm-parisc/ptrace.h b/include/asm-parisc/ptrace.h
> index 93f990e..3e94c5d 100644
> --- a/include/asm-parisc/ptrace.h
> +++ b/include/asm-parisc/ptrace.h
> @@ -33,7 +33,6 @@ struct pt_regs {
> unsigned long ipsw; /* CR22 */
> };
>
> -#define task_regs(task) ((struct pt_regs *) ((char *)(task) + TASK_REGS))
> /*
> * The numbers chosen here are somewhat arbitrary but absolutely MUST
> * not overlap with any of the number assigned in <linux/ptrace.h>.
> @@ -43,8 +42,11 @@ struct pt_regs {
> * since we have taken branch traps too)
> */
> #define PTRACE_SINGLEBLOCK 12 /* resume execution until next branch */
> +
> #ifdef __KERNEL__
>
> +#define task_regs(task) ((struct pt_regs *) ((char *)(task) + TASK_REGS))
> +
> /* XXX should we use iaoq[1] or iaoq[0] ? */
> #define user_mode(regs) (((regs)->iaoq[0] & 3) ? 1 : 0)
> #define user_space(regs) (((regs)->iasq[1] != 0) ? 1 : 0)
> diff --git a/include/asm-powerpc/Kbuild b/include/asm-powerpc/Kbuild
> index 7381916..6920904 100644
> --- a/include/asm-powerpc/Kbuild
> +++ b/include/asm-powerpc/Kbuild
> @@ -32,7 +32,6 @@ unifdef-y += elf.h
> unifdef-y += nvram.h
> unifdef-y += param.h
> unifdef-y += posix_types.h
> -unifdef-y += ptrace.h
> unifdef-y += seccomp.h
> unifdef-y += signal.h
> unifdef-y += spu_info.h
> diff --git a/include/asm-sh/ptrace.h b/include/asm-sh/ptrace.h
> index 8d6c92b..7d36dc3 100644
> --- a/include/asm-sh/ptrace.h
> +++ b/include/asm-sh/ptrace.h
> @@ -5,7 +5,7 @@
> * Copyright (C) 1999, 2000 Niibe Yutaka
> *
> */
> -#if defined(__SH5__) || defined(CONFIG_SUPERH64)
> +#if defined(__SH5__)
> struct pt_regs {
> unsigned long long pc;
> unsigned long long sr;
> diff --git a/include/asm-x86/Kbuild b/include/asm-x86/Kbuild
> index 1e35545..00473f7 100644
> --- a/include/asm-x86/Kbuild
> +++ b/include/asm-x86/Kbuild
> @@ -19,7 +19,6 @@ unifdef-y += msr.h
> unifdef-y += mtrr.h
> unifdef-y += posix_types_32.h
> unifdef-y += posix_types_64.h
> -unifdef-y += ptrace.h
> unifdef-y += unistd_32.h
> unifdef-y += unistd_64.h
> unifdef-y += vm86.h
> diff --git a/include/asm-xtensa/ptrace.h b/include/asm-xtensa/ptrace.h
> index 422c73e..089b0db 100644
> --- a/include/asm-xtensa/ptrace.h
> +++ b/include/asm-xtensa/ptrace.h
> @@ -73,10 +73,10 @@
> #define PTRACE_GETXTREGS 18
> #define PTRACE_SETXTREGS 19
>
> -#ifndef __ASSEMBLY__
> -
> #ifdef __KERNEL__
>
> +#ifndef __ASSEMBLY__
> +
> /*
> * This struct defines the way the registers are stored on the
> * kernel stack during a system call or other kernel entry.
> @@ -122,14 +122,14 @@ extern void show_regs(struct pt_regs *);
> # ifndef CONFIG_SMP
> # define profile_pc(regs) instruction_pointer(regs)
> # endif
> -#endif /* __KERNEL__ */
>
> #else /* __ASSEMBLY__ */
>
> -#ifdef __KERNEL__
> # include <asm/asm-offsets.h>
> #define PT_REGS_OFFSET (KERNEL_STACK_SIZE - PT_USER_SIZE)
> -#endif
>
> #endif /* !__ASSEMBLY__ */
> +
> +#endif /* __KERNEL__ */
> +
> #endif /* _XTENSA_PTRACE_H */
>
>
--
------------------------------------------------------------------------
Greg Ungerer -- Chief Software Dude EMAIL: gerg@...pgear.com
Secure Computing Corporation PHONE: +61 7 3435 2888
825 Stanley St, FAX: +61 7 3891 3630
Woolloongabba, QLD, 4102, Australia WEB: http://www.SnapGear.com
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists