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authorVivek Goyal <vgoyal@in.ibm.com>2005-06-26 01:58:21 +0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-06-26 03:24:53 +0400
commit666bfddbe8b8fd4fd44617d6c55193d5ac7edb29 (patch)
tree74b03732131c51dbfd79a06f97d5ccec8894f9f3 /fs/proc/proc_misc.c
parent2030eae52b416a9a9f0ffda74c982b7f1e19496d (diff)
downloadlinux-666bfddbe8b8fd4fd44617d6c55193d5ac7edb29.tar.xz
[PATCH] kdump: Access dump file in elf format (/proc/vmcore)
From: "Vivek Goyal" <vgoyal@in.ibm.com> o Support for /proc/vmcore interface. This interface exports elf core image either in ELF32 or ELF64 format, depending on the format in which elf headers have been stored by crashed kernel. o Added support for CONFIG_VMCORE config option. o Removed the dependency on /proc/kcore. From: "Eric W. Biederman" <ebiederm@xmission.com> This patch has been refactored to more closely match the prevailing style in the affected files. And to clearly indicate the dependency between /proc/kcore and proc/vmcore.c From: Hariprasad Nellitheertha <hari@in.ibm.com> This patch contains the code that provides an ELF format interface to the previous kernel's memory post kexec reboot. Signed off by Hariprasad Nellitheertha <hari@in.ibm.com> Signed-off-by: Eric Biederman <ebiederm@xmission.com> Signed-off-by: Vivek Goyal <vgoyal@in.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'fs/proc/proc_misc.c')
-rw-r--r--fs/proc/proc_misc.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/fs/proc/proc_misc.c b/fs/proc/proc_misc.c
index 94b570ad037d..a3453555a94e 100644
--- a/fs/proc/proc_misc.c
+++ b/fs/proc/proc_misc.c
@@ -44,6 +44,7 @@
#include <linux/jiffies.h>
#include <linux/sysrq.h>
#include <linux/vmalloc.h>
+#include <linux/crash_dump.h>
#include <asm/uaccess.h>
#include <asm/pgtable.h>
#include <asm/io.h>
@@ -618,6 +619,11 @@ void __init proc_misc_init(void)
(size_t)high_memory - PAGE_OFFSET + PAGE_SIZE;
}
#endif
+#ifdef CONFIG_PROC_VMCORE
+ proc_vmcore = create_proc_entry("vmcore", S_IRUSR, NULL);
+ if (proc_vmcore)
+ proc_vmcore->proc_fops = &proc_vmcore_operations;
+#endif
#ifdef CONFIG_MAGIC_SYSRQ
entry = create_proc_entry("sysrq-trigger", S_IWUSR, NULL);
if (entry)