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[multiboot] Include argv[0] as part of "command line"

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Grub will include the module name as part of the command line, and
some multiboot kernels expect this to be done.
This commit is contained in:
Michael Brown 2009-05-26 06:58:53 +01:00
parent c345336435
commit 822b3b53f4
1 changed files with 6 additions and 5 deletions
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11
src/arch/i386/image/multiboot.c
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@ -141,10 +141,11 @@ static void multiboot_build_memmap ( struct image *image,
/**
* Add command line in base memory
*
* @v imgname Image name
* @v cmdline Command line
* @ret physaddr Physical address of command line
*/
physaddr_t multiboot_add_cmdline ( const char *cmdline ) {
physaddr_t multiboot_add_cmdline ( const char *imgname, const char *cmdline ) {
char *mb_cmdline;
if ( ! cmdline )
@ -155,7 +156,7 @@ physaddr_t multiboot_add_cmdline ( const char *cmdline ) {
mb_cmdline_offset +=
( snprintf ( mb_cmdline,
( sizeof ( mb_cmdlines ) - mb_cmdline_offset ),
"%s", cmdline ) + 1 );
"%s %s", imgname, cmdline ) + 1 );
/* Truncate to terminating NUL in buffer if necessary */
if ( mb_cmdline_offset > sizeof ( mb_cmdlines ) )
@ -210,8 +211,8 @@ multiboot_build_module_list ( struct image *image,
( ( count - insert ) * sizeof ( *module ) ) );
module->mod_start = start;
module->mod_end = end;
module->string =
multiboot_add_cmdline ( module_image->cmdline );
module->string = multiboot_add_cmdline ( module_image->name,
module_image->cmdline );
module->reserved = 0;
/* We promise to page-align modules */
@ -269,7 +270,7 @@ static int multiboot_exec ( struct image *image ) {
multiboot_build_memmap ( image, &mbinfo, mbmemmap,
( sizeof(mbmemmap) / sizeof(mbmemmap[0]) ) );
mb_cmdline_offset = 0;
mbinfo.cmdline = multiboot_add_cmdline ( image->cmdline );
mbinfo.cmdline = multiboot_add_cmdline ( image->name, image->cmdline );
mbinfo.mods_count = multiboot_build_module_list ( image, mbmodules,
( sizeof(mbmodules) / sizeof(mbmodules[0]) ) );
mbinfo.mods_addr = virt_to_phys ( mbmodules );