Commit-ID: 8c0517759a1a100a8b83134cf3c7f254774aaeba Gitweb: http://git.kernel.org/tip/8c0517759a1a100a8b83134cf3c7f254774aaeba Author: Dave Hansen <dave.han...@linux.intel.com> AuthorDate: Tue, 22 Dec 2015 14:52:43 -0800 Committer: Ingo Molnar <mi...@kernel.org> CommitDate: Wed, 3 Feb 2016 12:03:18 +0100
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.han...@linux.intel.com> [ Aligned args properly. ] Signed-off-by: Borislav Petkov <b...@suse.de> Cc: Andy Lutomirski <l...@amacapital.net> Cc: Borislav Petkov <b...@alien8.de> Cc: Brian Gerst <brge...@gmail.com> Cc: Denys Vlasenko <dvlas...@redhat.com> Cc: H. Peter Anvin <h...@zytor.com> Cc: Linus Torvalds <torva...@linux-foundation.org> Cc: Peter Zijlstra <pet...@infradead.org> Cc: Thomas Gleixner <t...@linutronix.de> Cc: fenghua...@intel.com Cc: yu-cheng...@intel.com Link: http://lkml.kernel.org/r/20151222225243.5cc47...@viggo.jf.intel.com Signed-off-by: Ingo Molnar <mi...@kernel.org> --- arch/x86/lib/cmdline.c | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-) diff --git a/arch/x86/lib/cmdline.c b/arch/x86/lib/cmdline.c index 945a639..5cc78bf 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); +}
