grub_err_t
grub_initrd_load (struct grub_linux_initrd_context *initrd_ctx,
char *argv[], void *target)
{
grub_uint8_t *ptr = target;
int i;
int newc = 0;
struct dir *root = 0;
grub_ssize_t cursize = 0;
for (i = 0; i < initrd_ctx->nfiles; i++)
{
grub_memset (ptr, 0, ALIGN_UP_OVERHEAD (cursize, 4));
ptr += ALIGN_UP_OVERHEAD (cursize, 4);
if (initrd_ctx->components[i].newc_name)
{
ptr += insert_dir (initrd_ctx->components[i].newc_name,
&root, ptr);
ptr = make_header (ptr, initrd_ctx->components[i].newc_name,
grub_strlen (initrd_ctx->components[i].newc_name),
0100777,
initrd_ctx->components[i].size);
newc = 1;
}
else if (newc)
{
ptr = make_header (ptr, "TRAILER!!!", sizeof ("TRAILER!!!") - 1,
0, 0);
free_dir (root);
root = 0;
newc = 0;
}
cursize = initrd_ctx->components[i].size;
if (grub_file_read (initrd_ctx->components[i].file, ptr, cursize)
!= cursize)
{
if (!grub_errno)
grub_error (GRUB_ERR_FILE_READ_ERROR, N_("premature end of file %s"),
argv[i]);
grub_initrd_close (initrd_ctx);
return grub_errno;
}
ptr += cursize;
}
if (newc)
ptr = make_header (ptr, "TRAILER!!!", sizeof ("TRAILER!!!") - 1, 0, 0);
free_dir (root);
root = 0;
return GRUB_ERR_NONE;
}
static grub_uint8_t *
make_header (grub_uint8_t *ptr,
const char *name, grub_size_t len,
grub_uint32_t mode,
grub_off_t fsize)
{
struct newc_head *head = (struct newc_head *) ptr;
grub_uint8_t *optr;
grub_size_t oh = 0;
grub_memcpy (head->magic, "070701", 6);
set_field (head->ino, 0);
set_field (head->mode, mode);
set_field (head->uid, 0);
set_field (head->gid, 0);
set_field (head->nlink, 1);
set_field (head->mtime, 0);
set_field (head->filesize, fsize);
set_field (head->devmajor, 0);
set_field (head->devminor, 0);
set_field (head->rdevmajor, 0);
set_field (head->rdevminor, 0);
set_field (head->namesize, len);
set_field (head->check, 0);
optr = ptr;
ptr += sizeof (struct newc_head);
grub_memcpy (ptr, name, len);
ptr += len;
oh = ALIGN_UP_OVERHEAD (ptr - optr, 4);
grub_memset (ptr, 0, oh);
ptr += oh;
return ptr;
}
static grub_err_t
grub_cmd_initrd (grub_command_t cmd __attribute__ ((unused)),
int argc, char *argv[])
{
grub_file_t *files = 0;
int i, nfiles = 0;
grub_size_t size = 0;
grub_uint8_t *ptr;
if (argc == 0)
{
grub_error (GRUB_ERR_BAD_ARGUMENT, N_("filename expected"));
goto fail;
}
if (!loaded)
{
grub_error (GRUB_ERR_BAD_ARGUMENT, N_("you need to load the kernel first"));
goto fail;
}
files = grub_zalloc (argc * sizeof (files[0]));
if (!files)
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);
}
initrd_mem = grub_efi_allocate_pages_max (0x3fffffff, BYTES_TO_PAGES(size));
if (!initrd_mem)
{
grub_error (GRUB_ERR_OUT_OF_MEMORY, N_("can't allocate initrd"));
goto fail;
}
params->ramdisk_size = size;
params->ramdisk_image = (grub_uint32_t)(grub_uint64_t) initrd_mem;
ptr = initrd_mem;
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;
}
grub_tpm_measure (ptr, cursize, GRUB_INITRD_PCR);
ptr += cursize;
grub_memset (ptr, 0, ALIGN_UP_OVERHEAD (cursize, 4));
ptr += ALIGN_UP_OVERHEAD (cursize, 4);
}
params->ramdisk_size = size;
fail:
for (i = 0; i < nfiles; i++)
grub_file_close (files[i]);
grub_free (files);
if (initrd_mem && grub_errno)
grub_efi_free_pages((grub_efi_physical_address_t)initrd_mem, BYTES_TO_PAGES(size));
return grub_errno;
}
