Attachment 156119 Details for Bug 241362 – new version of patch to enable kcore access

[patch] new version of patch to enable kcore access

kcore-enable.patch (text/plain), 1.03 KB, created by Neil Horman on 2007-06-04 20:00:11 UTC

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Creator: Neil Horman

Created: 2007-06-04 20:00:11 UTC

Size: 1.03 KB

patch

obsolete

>--- linux-2.6.20.noarch/fs/proc/kcore.c.orig	2007-06-04 15:44:29.000000000 -0400
>+++ linux-2.6.20.noarch/fs/proc/kcore.c	2007-06-04 15:48:57.000000000 -0400
>@@ -23,10 +23,10 @@
> #include <asm/io.h>
> 
> #define CORE_STR "CORE"
>-
>+unsigned int allow_kcore_access = 0;
> static int open_kcore(struct inode * inode, struct file * filp)
> {
>-	return -EPERM;
>+	return (capable(CAP_SYS_RAWIO) && allow_kcore_access) ? 0 : -EPERM;
> }
> 
> static ssize_t read_kcore(struct file *, char __user *, size_t, loff_t *);
>--- linux-2.6.20.noarch/arch/x86_64/kernel/machine_kexec.c.orig	2007-06-04 15:50:52.000000000 -0400
>+++ linux-2.6.20.noarch/arch/x86_64/kernel/machine_kexec.c	2007-06-04 15:52:14.000000000 -0400
>@@ -236,10 +236,12 @@
>  * Useful for holding code to do something appropriate
>  * after a kernel panic.
>  */
>+extern int allow_kcore_access;
> static int __init setup_crashkernel(char *arg)
> {
> 	unsigned long size, base;
> 	char *p;
>+	allow_kcore_access = 1; /*enable ability to read /proc/kcore*/
> 	if (!arg)
> 		return -EINVAL;
> 	size = memparse(arg, &p);

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