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Don't show kernel cmdline params after -- in /proc/cmdline

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Signed-off-by: Sven Dowideit <SvenDowideit@home.org.au>
This commit is contained in:
Sven Dowideit
2017-03-09 05:56:12 +00:00
parent 0a80f78935
commit ef5eb127b4
4 changed files with 60 additions and 124 deletions
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18
patches/elide-post-dash-cmdline-from-proc.patch Normal file
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@@ -0,0 +1,18 @@
diff --git a/init/main.c b/init/main.c
index 2858be7..83fa41b 100644
--- a/init/main.c
+++ b/init/main.c
@@ -519,9 +519,12 @@ asmlinkage __visible void __init start_kernel(void)
static_command_line, __start___param,
__stop___param - __start___param,
-1, -1, NULL, &unknown_bootoption);
- if (!IS_ERR_OR_NULL(after_dashes))
+ if (!IS_ERR_OR_NULL(after_dashes)) {
+ /* elide the non-kernel params by puting a \0 just after the -- */
+ saved_command_line[after_dashes-static_command_line-1] = "\0";
parse_args("Setting init args", after_dashes, NULL, 0, -1, -1,
NULL, set_init_arg);
+ }
jump_label_init();