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authorEric W. Biederman <ebiederm@xmission.com>2006-11-05 23:52:11 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2006-11-06 01:46:23 -0800
commit0e009be8a0c2309f3696df70f72ef0075aa34c9c (patch)
treec5bb299c54ec1334dd934f06ad5b6caa2880b5dd /kernel
parent64efade11cddc4237c1b95ea4ca18af122a7e19e (diff)
downloadlinux-0e009be8a0c2309f3696df70f72ef0075aa34c9c.tar.bz2
[PATCH] Improve the removed sysctl warnings
Don't warn about libpthread's access to kernel.version. When it receives -ENOSYS it will read /proc/sys/kernel/version. If anything else shows up print the sysctl number string. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Cc: Cal Peake <cp@absolutedigital.net> Cc: Alan Cox <alan@redhat.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'kernel')
-rw-r--r--kernel/sysctl.c22
1 files changed, 21 insertions, 1 deletions
diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index 8bff2c18fb5a..0c8e805bbd6f 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -2680,13 +2680,33 @@ int sysctl_ms_jiffies(ctl_table *table, int __user *name, int nlen,
asmlinkage long sys_sysctl(struct __sysctl_args __user *args)
{
static int msg_count;
+ struct __sysctl_args tmp;
+ int name[CTL_MAXNAME];
+ int i;
+
+ /* Read in the sysctl name for better debug message logging */
+ if (copy_from_user(&tmp, args, sizeof(tmp)))
+ return -EFAULT;
+ if (tmp.nlen <= 0 || tmp.nlen >= CTL_MAXNAME)
+ return -ENOTDIR;
+ for (i = 0; i < tmp.nlen; i++)
+ if (get_user(name[i], tmp.name + i))
+ return -EFAULT;
+
+ /* Ignore accesses to kernel.version */
+ if ((tmp.nlen == 2) && (name[0] == CTL_KERN) && (name[1] == KERN_VERSION))
+ goto out;
if (msg_count < 5) {
msg_count++;
printk(KERN_INFO
"warning: process `%s' used the removed sysctl "
- "system call\n", current->comm);
+ "system call with ", current->comm);
+ for (i = 0; i < tmp.nlen; i++)
+ printk("%d.", name[i]);
+ printk("\n");
}
+out:
return -ENOSYS;
}