linux-kernel - [PATCH 25/26] Dynamic kernel command-line

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

Message-Id: <200609040124.31749.alon.barlev@gmail.com>
Date:	Mon, 4 Sep 2006 01:24:30 +0300
From:	Alon Bar-Lev <alon.barlev@...il.com>
To:	Andi Kleen <ak@...e.de>
Cc:	Matt Domsch <Matt_Domsch@...l.com>, Andrew Morton <akpm@...l.org>,
	linux-kernel@...r.kernel.org, johninsd@....rr.com,
	davej@...emonkey.org.uk, Riley@...liams.name,
	trini@...nel.crashing.org, davem@...emloft.net, ecd@...inaid.de,
	jj@...site.ms.mff.cuni.cz, anton@...ba.org, wli@...omorphy.com,
	lethal@...ux-sh.org, rc@....org.uk, spyro@....com, rth@...ddle.net,
	avr32@...el.com, hskinnemoen@...el.com, starvik@...s.com,
	ralf@...ux-mips.org, matthew@....cx, grundler@...isc-linux.org,
	geert@...ux-m68k.org, zippel@...ux-m68k.org, paulus@...ba.org,
	schwidefsky@...ibm.com, heiko.carstens@...ibm.com,
	uclinux-v850@....nec.co.jp, chris@...kel.net
Subject: [PATCH 25/26] Dynamic kernel command-line - x86_64


1. Rename saved_command_line into boot_command_line.
2. Set command_line as __initdata.

Signed-off-by: Alon Bar-Lev <alon.barlev@...il.com>

---

diff -urNp linux-2.6.18-rc5-mm1.org/include/asm-x86_64/bootsetup.h linux-2.6.18-rc5-mm1/include/asm-x86_64/bootsetup.h
--- linux-2.6.18-rc5-mm1.org/include/asm-x86_64/bootsetup.h	2006-06-18 04:49:35.000000000 +0300
+++ linux-2.6.18-rc5-mm1/include/asm-x86_64/bootsetup.h	2006-09-03 19:47:59.000000000 +0300
@@ -31,7 +31,7 @@ extern char x86_boot_params[BOOT_PARAM_S
 #define EDD_MBR_SIG_NR (*(unsigned char *) (PARAM+EDD_MBR_SIG_NR_BUF))
 #define EDD_MBR_SIGNATURE ((unsigned int *) (PARAM+EDD_MBR_SIG_BUF))
 #define EDD_BUF     ((struct edd_info *) (PARAM+EDDBUF))
-#define COMMAND_LINE saved_command_line
+#define COMMAND_LINE boot_command_line
 
 #define RAMDISK_IMAGE_START_MASK  	0x07FF
 #define RAMDISK_PROMPT_FLAG		0x8000
diff -urNp linux-2.6.18-rc5-mm1.org/arch/x86_64/kernel/head64.c linux-2.6.18-rc5-mm1/arch/x86_64/kernel/head64.c
--- linux-2.6.18-rc5-mm1.org/arch/x86_64/kernel/head64.c	2006-09-03 18:56:53.000000000 +0300
+++ linux-2.6.18-rc5-mm1/arch/x86_64/kernel/head64.c	2006-09-03 23:47:39.000000000 +0300
@@ -34,7 +34,7 @@ static void __init clear_bss(void)
 #define OLD_CL_BASE_ADDR        0x90000
 #define OLD_CL_OFFSET           0x90022
 
-extern char saved_command_line[];
+extern char __initdata boot_command_line[];
 
 static void __init copy_bootdata(char *real_mode_data)
 {
@@ -50,7 +50,7 @@ static void __init copy_bootdata(char *r
 		new_data = OLD_CL_BASE_ADDR + * (u16 *) OLD_CL_OFFSET;
 	}
 	command_line = (char *) ((u64)(new_data));
-	memcpy(saved_command_line, command_line, COMMAND_LINE_SIZE);
+	memcpy(boot_command_line, command_line, COMMAND_LINE_SIZE);
 }
 
 void __init x86_64_start_kernel(char * real_mode_data)
diff -urNp linux-2.6.18-rc5-mm1.org/arch/x86_64/kernel/setup.c linux-2.6.18-rc5-mm1/arch/x86_64/kernel/setup.c
--- linux-2.6.18-rc5-mm1.org/arch/x86_64/kernel/setup.c	2006-09-03 18:56:53.000000000 +0300
+++ linux-2.6.18-rc5-mm1/arch/x86_64/kernel/setup.c	2006-09-03 20:55:20.000000000 +0300
@@ -100,7 +100,7 @@ EXPORT_SYMBOL_GPL(edid_info);
 
 extern int root_mountflags;
 
-char command_line[COMMAND_LINE_SIZE];
+char __initdata command_line[COMMAND_LINE_SIZE];
 
 struct resource standard_io_resources[] = {
 	{ .name = "dma1", .start = 0x00, .end = 0x1f,
@@ -376,7 +376,7 @@ void __init setup_arch(char **cmdline_p)
 
 	early_identify_cpu(&boot_cpu_data);
 
-	strlcpy(command_line, saved_command_line, COMMAND_LINE_SIZE);
+	strlcpy(command_line, boot_command_line, COMMAND_LINE_SIZE);
 	*cmdline_p = command_line;
 
 	parse_early_param();

-- 
VGER BF report: H 0
-
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/