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authorDave Hansen <dave.hansen@linux.intel.com>2015-12-23 01:52:43 +0300
committerIngo Molnar <mingo@kernel.org>2016-02-03 14:03:18 +0300
commit8c0517759a1a100a8b83134cf3c7f254774aaeba (patch)
tree1e7321cce7738cea4a773613cec40990291cba68 /arch/x86/lib
parent4de07ea481361b08fe13735004dafae862482d38 (diff)
downloadlinux-8c0517759a1a100a8b83134cf3c7f254774aaeba.tar.xz
x86/boot: Pass in size to early cmdline parsing
We will use this in a few patches to implement tests for early parsing. Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com> [ Aligned args properly. ] Signed-off-by: Borislav Petkov <bp@suse.de> Cc: Andy Lutomirski <luto@amacapital.net> Cc: Borislav Petkov <bp@alien8.de> Cc: Brian Gerst <brgerst@gmail.com> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: fenghua.yu@intel.com Cc: yu-cheng.yu@intel.com Link: http://lkml.kernel.org/r/20151222225243.5CC47EB6@viggo.jf.intel.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/x86/lib')
-rw-r--r--arch/x86/lib/cmdline.c11
1 files changed, 9 insertions, 2 deletions
diff --git a/arch/x86/lib/cmdline.c b/arch/x86/lib/cmdline.c
index 945a639c02dd..5cc78bf57232 100644
--- a/arch/x86/lib/cmdline.c
+++ b/arch/x86/lib/cmdline.c
@@ -25,7 +25,9 @@ static inline int myisspace(u8 c)
* as an entire word in @cmdline. For instance, if @option="car"
* then a cmdline which contains "cart" will not match.
*/
-int cmdline_find_option_bool(const char *cmdline, const char *option)
+static int
+__cmdline_find_option_bool(const char *cmdline, int max_cmdline_size,
+ const char *option)
{
char c;
int pos = 0, wstart = 0;
@@ -43,7 +45,7 @@ int cmdline_find_option_bool(const char *cmdline, const char *option)
* This 'pos' check ensures we do not overrun
* a non-NULL-terminated 'cmdline'
*/
- while (pos < COMMAND_LINE_SIZE) {
+ while (pos < max_cmdline_size) {
c = *(char *)cmdline++;
pos++;
@@ -101,3 +103,8 @@ int cmdline_find_option_bool(const char *cmdline, const char *option)
return 0; /* Buffer overrun */
}
+
+int cmdline_find_option_bool(const char *cmdline, const char *option)
+{
+ return __cmdline_find_option_bool(cmdline, COMMAND_LINE_SIZE, option);
+}