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Add ability to generate newc additions on runtime.

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This commit is contained in:
Vladimir 'phcoder' Serbinenko 2013-03-22 21:01:28 +01:00
parent 0ec45a682c
commit 92750e4c60
10 changed files with 366 additions and 201 deletions
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40
grub-core/loader/i386/pc/linux.c
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@ -34,6 +34,7 @@
#include <grub/video.h>
#include <grub/i386/floppy.h>
#include <grub/lib/cmdline.h>
#include <grub/linux.h>
GRUB_MOD_LICENSE ("GPLv3+");
@ -381,15 +382,13 @@ static grub_err_t
grub_cmd_initrd (grub_command_t cmd __attribute__ ((unused)),
int argc, char *argv[])
{
grub_file_t *files = 0;
grub_size_t size = 0;
grub_addr_t addr_max, addr_min;
struct linux_kernel_header *lh;
grub_uint8_t *initrd_chunk;
grub_addr_t initrd_addr;
grub_err_t err;
int i, nfiles = 0;
grub_uint8_t *ptr;
struct grub_linux_initrd_context initrd_ctx;
if (argc == 0)
{
@ -437,19 +436,10 @@ grub_cmd_initrd (grub_command_t cmd __attribute__ ((unused)),
addr_min = GRUB_LINUX_BZIMAGE_ADDR + grub_linux16_prot_size;
files = grub_zalloc (argc * sizeof (files[0]));
if (!files)
if (grub_initrd_init (argc, argv, &initrd_ctx))
goto fail;
for (i = 0; i < argc; i++)
{
grub_file_filter_disable_compression ();
files[i] = grub_file_open (argv[i]);
if (! files[i])
goto fail;
nfiles++;
size += ALIGN_UP (grub_file_size (files[i]), 4);
}
size = grub_get_initrd_size (&initrd_ctx);
{
grub_relocator_chunk_t ch;
@ -463,30 +453,14 @@ grub_cmd_initrd (grub_command_t cmd __attribute__ ((unused)),
initrd_addr = get_physical_target_address (ch);
}
ptr = initrd_chunk;
for (i = 0; i < nfiles; i++)
{
grub_ssize_t cursize = grub_file_size (files[i]);
if (grub_file_read (files[i], ptr, cursize) != cursize)
{
if (!grub_errno)
grub_error (GRUB_ERR_FILE_READ_ERROR, N_("premature end of file %s"),
argv[i]);
goto fail;
}
ptr += cursize;
grub_memset (ptr, 0, ALIGN_UP_OVERHEAD (cursize, 4));
ptr += ALIGN_UP_OVERHEAD (cursize, 4);
}
if (grub_initrd_load (&initrd_ctx, argv, initrd_chunk))
goto fail;
lh->ramdisk_image = initrd_addr;
lh->ramdisk_size = size;
fail:
for (i = 0; i < nfiles; i++)
grub_file_close (files[i]);
grub_free (files);
grub_initrd_close (&initrd_ctx);
return grub_errno;
}