diff options
| author | Bernhard Walle <bwalle@suse.de> | 2008-05-08 22:49:43 +0200 |
|---|---|---|
| committer | Simon Horman <horms@verge.net.au> | 2008-05-21 16:05:35 +1000 |
| commit | 3c5bb06948881b3e31c783c19edef74275794280 (patch) | |
| tree | 6c7de84de120c2899622207f85bcb889605fdab4 /kexec/arch/i386/kexec-elf-x86.c | |
| parent | 3bf0213789d56054f601c5a06372f78567aacdd9 (diff) | |
Add --reuse-cmdline
This patch adds an option "--reuse-cmdline" for people that are lazy in typing
--append="$(cat /proc/cmdline)". The advantage of "--reuse-cmdline" is also that
it strips off BOOT_IMAGE (since it may not be correct any more) from lilo and
other boot loaders, and, more important, the crashkernel option in case a
panic kernel is loaded.
If you like the option I can also add it for really all architectures. Tested only
with x86-bzImage both the kexec and kdump case.
Signed-off-by: Bernhard Walle <bwalle@suse.de>
Signed-off-by: Simon Horman <horms@verge.net.au>
Diffstat (limited to 'kexec/arch/i386/kexec-elf-x86.c')
| -rw-r--r-- | kexec/arch/i386/kexec-elf-x86.c | 16 |
1 files changed, 11 insertions, 5 deletions
diff --git a/kexec/arch/i386/kexec-elf-x86.c b/kexec/arch/i386/kexec-elf-x86.c index 1e523f9..ddd4a10 100644 --- a/kexec/arch/i386/kexec-elf-x86.c +++ b/kexec/arch/i386/kexec-elf-x86.c @@ -73,6 +73,7 @@ void elf_x86_usage(void) { printf( " --command-line=STRING Set the kernel command line to STRING\n" " --append=STRING Set the kernel command line to STRING\n" + " --reuse-cmdline Use kernel command line from running system.\n" " --initrd=FILE Use FILE as the kernel's initial ramdisk.\n" " --ramdisk=FILE Use FILE as the kernel's initial ramdisk.\n" " --args-linux Pass linux kernel style options\n" @@ -97,16 +98,18 @@ int elf_x86_load(int argc, char **argv, const char *buf, off_t len, #define ARG_STYLE_LINUX 1 #define ARG_STYLE_NONE 2 int opt; -#define OPT_APPEND (OPT_ARCH_MAX+0) -#define OPT_RAMDISK (OPT_ARCH_MAX+1) -#define OPT_ARGS_ELF (OPT_ARCH_MAX+2) -#define OPT_ARGS_LINUX (OPT_ARCH_MAX+3) -#define OPT_ARGS_NONE (OPT_ARCH_MAX+4) +#define OPT_APPEND (OPT_ARCH_MAX+0) +#define OPT_REUSE_CMDLINE (OPT_ARCH_MAX+1) +#define OPT_RAMDISK (OPT_ARCH_MAX+2) +#define OPT_ARGS_ELF (OPT_ARCH_MAX+3) +#define OPT_ARGS_LINUX (OPT_ARCH_MAX+4) +#define OPT_ARGS_NONE (OPT_ARCH_MAX+5) static const struct option options[] = { KEXEC_ARCH_OPTIONS { "command-line", 1, NULL, OPT_APPEND }, { "append", 1, NULL, OPT_APPEND }, + { "reuse-cmdline", 1, NULL, OPT_REUSE_CMDLINE }, { "initrd", 1, NULL, OPT_RAMDISK }, { "ramdisk", 1, NULL, OPT_RAMDISK }, { "args-elf", 0, NULL, OPT_ARGS_ELF }, @@ -138,6 +141,9 @@ int elf_x86_load(int argc, char **argv, const char *buf, off_t len, case OPT_APPEND: command_line = optarg; break; + case OPT_REUSE_CMDLINE: + command_line = get_command_line(); + break; case OPT_RAMDISK: ramdisk = optarg; break; |