diff options
| author | Arjan van de Ven <arjan@infradead.org> | 2005-03-04 17:24:30 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-03-04 17:24:30 -0800 |
| commit | 818bcba580bbe96829fe776de526125205eb8c8b (patch) | |
| tree | 9990391aad69ce099b37899b13a6acc30dee5487 /kernel | |
| parent | ba4cfe0329cd9ef11e8f45032a202741237798c3 (diff) | |
[PATCH] Randomisation: global sysctl
This first patch of the series introduces a sysctl (default off) that
enables/disables the randomisation feature globally. Since randomisation may
make it harder to debug really tricky situations (reproducability goes down),
the sysadmin needs a way to disable it globally.
Signed-off-by: Arjan van de Ven <arjan@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/kernel/sysctl.c b/kernel/sysctl.c index a72dd5677c8f..3f6b3fcf4309 100644 --- a/kernel/sysctl.c +++ b/kernel/sysctl.c @@ -121,6 +121,8 @@ extern int sysctl_hz_timer; extern int acct_parm[]; #endif +int randomize_va_space; + static int parse_table(int __user *, int, void __user *, size_t __user *, void __user *, size_t, ctl_table *, void **); static int proc_doutsstring(ctl_table *table, int write, struct file *filp, @@ -632,6 +634,15 @@ static ctl_table kern_table[] = { .proc_handler = &proc_dointvec, }, #endif + { + .ctl_name = KERN_RANDOMIZE, + .procname = "randomize_va_space", + .data = &randomize_va_space, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = &proc_dointvec, + }, + { .ctl_name = 0 } }; |