linux-kernel - [PATCH 1/5] x86: pass in size to early cmdline parsing

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <20151217220051.E8C7A8C9@viggo.jf.intel.com>
Date:	Thu, 17 Dec 2015 14:00:51 -0800
From:	Dave Hansen <dave@...1.net>
To:	linux-kernel@...r.kernel.org
Cc:	Dave Hansen <dave@...1.net>, dave.hansen@...ux.intel.com,
	bp@...e.de, hpa@...or.com, fenghua.yu@...el.com,
	yu-cheng.yu@...el.com
Subject: [PATCH 1/5] x86: pass in size to early cmdline parsing


From: Dave Hansen <dave.hansen@...ux.intel.com>

We will use this in a few patches to implement tests for early
parsing.

Signed-off-by: Dave Hansen <dave.hansen@...ux.intel.com>
Cc: Borislav Petkov <bp@...e.de>
Cc: H. Peter Anvin <hpa@...or.com>
Cc: linux-kernel@...r.kernel.org
Cc: fenghua.yu@...el.com
Cc: yu-cheng.yu@...el.com
---

 b/arch/x86/lib/cmdline.c |   11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff -puN arch/x86/lib/cmdline.c~pass-in-cmdline-size arch/x86/lib/cmdline.c
--- a/arch/x86/lib/cmdline.c~pass-in-cmdline-size	2015-12-17 13:54:52.534928192 -0800
+++ b/arch/x86/lib/cmdline.c	2015-12-17 13:54:52.537928328 -0800
@@ -23,7 +23,8 @@ static inline int myisspace(u8 c)
  * Returns the position of that @option (starts counting with 1)
  * or 0 on not found.
  */
-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 len, pos = 0, wstart = 0;
@@ -37,7 +38,7 @@ int cmdline_find_option_bool(const char
 	if (!cmdline)
 		return -1;      /* No command line */
 
-	len = min_t(int, strlen(cmdline), COMMAND_LINE_SIZE);
+	len = min_t(int, strlen(cmdline), max_cmdline_size);
 	if (!len)
 		return 0;
 
@@ -82,3 +83,9 @@ int cmdline_find_option_bool(const char
 
 	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);
+}
_
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/