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authorVlastimil Babka <vbabka@suse.cz>2020-06-08 07:40:38 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2020-06-08 21:05:56 +0300
commit4f2f682d89d83fb6194562321d875253282d8496 (patch)
tree397eed2cda816c8d8e8322e20150f54e1bbca34d /lib
parent4546cde96f9fbef8f59c645f2e0677b5a390ed0d (diff)
downloadlinux-4f2f682d89d83fb6194562321d875253282d8496.tar.xz
lib/test_sysctl: support testing of sysctl. boot parameter
Testing is done by a new parameter debug.test_sysctl.boot_int which defaults to 0 and it's expected that the tester passes a boot parameter that sets it to 1. The test checks if it's set to 1. To distinguish true failure from parameter not being set, the test checks /proc/cmdline for the expected parameter, and whether test_sysctl is built-in and not a module. [vbabka@suse.cz: skip the new test if boot_int sysctl is not present] Link: http://lkml.kernel.org/r/305af605-1e60-cf84-fada-6ce1ca37c102@suse.cz Signed-off-by: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Cc: Alexey Dobriyan <adobriyan@gmail.com> Cc: Christian Brauner <christian.brauner@ubuntu.com> Cc: David Rientjes <rientjes@google.com> Cc: "Eric W . Biederman" <ebiederm@xmission.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: "Guilherme G . Piccoli" <gpiccoli@canonical.com> Cc: Iurii Zaikin <yzaikin@google.com> Cc: Ivan Teterevkov <ivan.teterevkov@nutanix.com> Cc: Kees Cook <keescook@chromium.org> Cc: Luis Chamberlain <mcgrof@kernel.org> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Matthew Wilcox <willy@infradead.org> Cc: Michal Hocko <mhocko@kernel.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/20200427180433.7029-6-vbabka@suse.cz Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'lib')
-rw-r--r--lib/test_sysctl.c13
1 files changed, 13 insertions, 0 deletions
diff --git a/lib/test_sysctl.c b/lib/test_sysctl.c
index 566dad3f4196..84eaae22d3a6 100644
--- a/lib/test_sysctl.c
+++ b/lib/test_sysctl.c
@@ -44,6 +44,8 @@ struct test_sysctl_data {
int int_0002;
int int_0003[4];
+ int boot_int;
+
unsigned int uint_0001;
char string_0001[65];
@@ -61,6 +63,8 @@ static struct test_sysctl_data test_data = {
.int_0003[2] = 2,
.int_0003[3] = 3,
+ .boot_int = 0,
+
.uint_0001 = 314,
.string_0001 = "(none)",
@@ -92,6 +96,15 @@ static struct ctl_table test_table[] = {
.proc_handler = proc_dointvec,
},
{
+ .procname = "boot_int",
+ .data = &test_data.boot_int,
+ .maxlen = sizeof(test_data.boot_int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec,
+ .extra1 = SYSCTL_ZERO,
+ .extra2 = SYSCTL_ONE,
+ },
+ {
.procname = "uint_0001",
.data = &test_data.uint_0001,
.maxlen = sizeof(unsigned int),