linux-kernel - Re: [PATCH] Use ELF_CORE_EFLAGS for kcore ELF header flags.

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Message-ID: <87skzwnwt7.wl%ysato@users.sourceforge.jp>
Date:	Wed, 13 Feb 2008 20:36:36 -0500
From:	Yoshinori Sato <ysato@...rs.sourceforge.jp>
To:	"Edgar E. Iglesias" <edgar.iglesias@...s.com>
Cc:	linux-kernel@...r.kernel.org, mikael.starvik@...s.com
Subject: Re: [PATCH] Use ELF_CORE_EFLAGS for kcore ELF header flags.

At Tue, 12 Feb 2008 14:34:23 +0100,
Edgar E. Iglesias wrote:
> 
> ELF_CORE_EFLAGS is already used by the binfmt_elf coredumper to set correct 
> arch specific ELF header flags on coredumps. Use it for kcore aswell.
> This corrects kcore files for the CRIS arch and I beleive it corrects 
> ordinary coredumps for the H8/300.
> 
> Signed-off-by: Edgar E. Iglesias <edgar@...s.com>
> 
> ---
> 
> diff --git a/fs/proc/kcore.c b/fs/proc/kcore.c
> index e78c81f..c2370c7 100644
> --- a/fs/proc/kcore.c
> +++ b/fs/proc/kcore.c
> @@ -23,6 +23,10 @@
>  
>  #define CORE_STR "CORE"
>  
> +#ifndef ELF_CORE_EFLAGS
> +#define ELF_CORE_EFLAGS	0
> +#endif
> +
>  static int open_kcore(struct inode * inode, struct file * filp)
>  {
>  	return capable(CAP_SYS_RAWIO) ? 0 : -EPERM;
> @@ -164,11 +168,7 @@ static void elf_kcore_store_hdr(char *bufp, int nphdr, int dataoff)
>  	elf->e_entry	= 0;
>  	elf->e_phoff	= sizeof(struct elfhdr);
>  	elf->e_shoff	= 0;
> -#if defined(CONFIG_H8300)
> -	elf->e_flags	= ELF_FLAGS;
> -#else
> -	elf->e_flags	= 0;
> -#endif
> +	elf->e_flags	= ELF_CORE_EFLAGS;
>  	elf->e_ehsize	= sizeof(struct elfhdr);
>  	elf->e_phentsize= sizeof(struct elf_phdr);
>  	elf->e_phnum	= nphdr;
> diff --git a/include/asm-h8300/elf.h b/include/asm-h8300/elf.h
> index 26bfc7e..806f20b 100644
> --- a/include/asm-h8300/elf.h
> +++ b/include/asm-h8300/elf.h
> @@ -32,6 +32,8 @@ typedef unsigned long elf_fpregset_t;
>  #define ELF_FLAGS       0x820000
>  #endif
>  
> +#define ELF_CORE_EFLAGS ELF_FLAGS
> +
>  #define ELF_PLAT_INIT(_r)	_r->er1 = 0
>  
>  #define USE_ELF_CORE_DUMP

Hmm...
I think more simple.

--- include/asm-h8300/elf.h~	2008-02-12 17:42:50.000000000 -0500
+++ include/asm-h8300/elf.h	2008-02-13 20:26:58.000000000 -0500
@@ -26,10 +26,10 @@
 #define ELF_DATA	ELFDATA2MSB
 #define ELF_ARCH	EM_H8_300
 #if defined(__H8300H__)
-#define ELF_FLAGS       0x810000
+#define ELF_CORE_FLAGS  0x810000
 #endif
 #if defined(__H8300S__)
-#define ELF_FLAGS       0x820000
+#define ELF_CORE_FLAGS  0x820000
 #endif
 
 #define ELF_PLAT_INIT(_r)	_r->er1 = 0

-- 
Yoshinori Sato
<ysato@...rs.sourceforge.jp>
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