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Message-ID: <20101214155737.040a49e3@suzukikp> Date: Tue, 14 Dec 2010 15:57:37 +0530 From: "Suzuki K. Poulose" <suzuki@...ibm.com> To: linux-kernel@...r.kernel.org Cc: "Suzuki K. Poulose" <suzuki@...ibm.com>, Jeremy Fitzhardinge <jeremy.fitzhardinge@...rix.com>, Christoph Hellwig <hch@....de>, Masami Hiramatsu <mhiramat@...hat.com>, Ananth N Mavinakayanahalli <ananth@...ibm.com>, Daisuke HATAYAMA <d.hatayama@...fujitsu.com>, Andi Kleen <andi@...stfloor.org>, Roland McGrath <roland@...hat.com>, Amerigo Wang <amwang@...hat.com>, Linus Torvalds <torvalds@...ux-foundation.org>, KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>, KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>, Oleg Nesterov <oleg@...hat.com>, Andrew Morton <akpm@...ux-foundation.org> Subject: [Patch 21/21] Compat ELF class Core generation support Add full support for the compat ELF class objects. The gencore-compat-elf.c reuses the gencore-elf.c, by renaming the ABI structures and functions. (Inspired by compat_binfmt_elf.c) Signed-off-by: Suzuki K. Poulose <suzuki@...ibm.com> --- fs/proc/Makefile | 1 fs/proc/gencore-compat-elf.c | 61 +++++++++++++++++++++++++++++++++++++++++++ fs/proc/gencore.c | 4 ++ fs/proc/gencore.h | 4 ++ 4 files changed, 70 insertions(+) Index: linux-2.6.36-rc7/fs/proc/gencore.h =================================================================== --- linux-2.6.36-rc7.orig/fs/proc/gencore.h +++ linux-2.6.36-rc7/fs/proc/gencore.h @@ -64,4 +64,8 @@ static inline int get_max_regsets(struc extern ssize_t elf_read_gencore(struct core_proc *cp, char __user *buffer, size_t buflen, loff_t *foffset); +#ifdef CONFIG_COMPAT_BINFMT_ELF +extern ssize_t compat_elf_read_gencore(struct core_proc *cp, char __user *buffer, + size_t buflen, loff_t *foffset); +#endif #endif Index: linux-2.6.36-rc7/fs/proc/gencore.c =================================================================== --- linux-2.6.36-rc7.orig/fs/proc/gencore.c +++ linux-2.6.36-rc7/fs/proc/gencore.c @@ -108,6 +108,10 @@ static ssize_t read_gencore(struct file if (cp->elf_class == ELF_CLASS_NATIVE) ret = elf_read_gencore(cp, buffer, buflen, fpos); +#ifdef CONFIG_COMPAT_BINFMT_ELF + else if (cp->elf_class == ELF_CLASS_COMPAT) + ret = compat_elf_read_gencore(cp, buffer, buflen, fpos); +#endif out: put_task_struct(task); Index: linux-2.6.36-rc7/fs/proc/gencore-compat-elf.c =================================================================== --- /dev/null +++ linux-2.6.36-rc7/fs/proc/gencore-compat-elf.c @@ -0,0 +1,61 @@ +/* + * Application core dump - compat ELF Class specific code + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + * + * Copyright (C) IBM Corporation, 2010 + * + * We use macros to rename the types and functions in gencore-elf.c to + * the compat versions + * + */ + +#include <linux/elfcore-compat.h> +#include "gencore.h" + +#undef elfhdr +#undef elf_phdr +#undef elf_shdr +#undef elf_note +#undef elf_addr_t +#define elfhdr elf32_hdr +#define elf_phdr elf32_phdr +#define elf_shdr elf32_shdr +#define elf_note elf32_note +#define elf_addr_t Elf32_Addr + +#undef ELF_CLASS +#define ELF_CLASS ELF_CASS32 + +#define elf_prstatus compat_elf_prstatus +#define elf_prpsinfo compat_elf_prpsinfo + +/* Functions used from binfmt_elf core code */ +#define fill_psinfo compat_fill_psinfo +#define fill_prstatus compat_fill_prstatus +#define fill_extnum_info compat_fill_extnum_info +#define fill_auxv_note compat_fill_auxv_note +#define fill_elf_header compat_fill_elf_header +/* + * Define the fileds in elf_thread_core_info and core_proc + * for compat ELF class + */ +#define et_prstatus u.compat_prstatus +#define cp_prpsinfo u.compat_prpsinfo + +/* Rename the core function to compat_ */ +#define elf_read_gencore compat_elf_read_gencore + +#include "gencore-elf.c" Index: linux-2.6.36-rc7/fs/proc/Makefile =================================================================== --- linux-2.6.36-rc7.orig/fs/proc/Makefile +++ linux-2.6.36-rc7/fs/proc/Makefile @@ -20,6 +20,7 @@ proc-y += uptime.o proc-y += version.o proc-y += softirqs.o proc-$(CONFIG_ELF_CORE) += gencore.o gencore-elf.o +proc-$(CONFIG_COMPAT_BINFMT_ELF) += gencore-compat-elf.o proc-$(CONFIG_PROC_SYSCTL) += proc_sysctl.o proc-$(CONFIG_NET) += proc_net.o proc-$(CONFIG_PROC_KCORE) += kcore.o -- 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/
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