static char *
grub_ext2_read_symlink (grub_fshelp_node_t node)
{
char *symlink;
struct grub_fshelp_node *diro = node;
if (! diro->inode_read)
{
grub_ext2_read_inode (diro->data, diro->ino, &diro->inode);
if (grub_errno)
return 0;
}
symlink = grub_malloc (grub_le_to_cpu32 (diro->inode.size) + 1);
if (! symlink)
return 0;
/* If the filesize of the symlink is bigger than
60 the symlink is stored in a separate block,
otherwise it is stored in the inode. */
if (grub_le_to_cpu32 (diro->inode.size) <= 60)
grub_strncpy (symlink,
diro->inode.symlink,
grub_le_to_cpu32 (diro->inode.size));
else
{
grub_ext2_read_file (diro, 0, 0,
grub_le_to_cpu32 (diro->inode.size),
symlink);
if (grub_errno)
{
grub_free (symlink);
return 0;
}
}
symlink[grub_le_to_cpu32 (diro->inode.size)] = '\0';
return symlink;
}
/* Write devtree in XNU format at curptr assuming the head is named NAME.*/
static void *
grub_xnu_writetree_toheap_real (void *curptr,
struct grub_xnu_devtree_key *start, char *name)
{
struct grub_xnu_devtree_key *cur;
int nkeys = 0, nvals = 0;
for (cur = start; cur; cur = cur->next)
{
if (cur->datasize == -1)
nkeys++;
else
nvals++;
}
/* For the name. */
nvals++;
*((grub_uint32_t *) curptr) = nvals;
curptr = ((grub_uint32_t *) curptr) + 1;
*((grub_uint32_t *) curptr) = nkeys;
curptr = ((grub_uint32_t *) curptr) + 1;
/* First comes "name" value. */
grub_memset (curptr, 0, 32);
grub_memcpy (curptr, "name", 4);
curptr = ((grub_uint8_t *) curptr) + 32;
*((grub_uint32_t *)curptr) = grub_strlen (name) + 1;
curptr = ((grub_uint32_t *) curptr) + 1;
grub_memcpy (curptr, name, grub_strlen (name));
curptr = ((grub_uint8_t *) curptr) + grub_strlen (name);
grub_memset (curptr, 0, 4 - (grub_strlen (name) % 4));
curptr = ((grub_uint8_t *) curptr) + (4 - (grub_strlen (name) % 4));
/* Then the other values. */
for (cur = start; cur; cur = cur->next)
if (cur->datasize != -1)
{
int align_overhead;
align_overhead = 4 - (cur->datasize % 4);
if (align_overhead == 4)
align_overhead = 0;
grub_memset (curptr, 0, 32);
grub_strncpy (curptr, cur->name, 31);
curptr = ((grub_uint8_t *) curptr) + 32;
*((grub_uint32_t *) curptr) = cur->datasize;
curptr = ((grub_uint32_t *) curptr) + 1;
grub_memcpy (curptr, cur->data, cur->datasize);
curptr = ((grub_uint8_t *) curptr) + cur->datasize;
grub_memset (curptr, 0, align_overhead);
curptr = ((grub_uint8_t *) curptr) + align_overhead;
}
/* And then the keys. Recursively use this function. */
for (cur = start; cur; cur = cur->next)
if (cur->datasize == -1)
if (!(curptr = grub_xnu_writetree_toheap_real (curptr,
cur->first_child,
cur->name)))
return 0;
return curptr;
}
static grub_err_t
grub_cmd_pxechain (grub_command_t cmd __attribute__ ((unused)),
int argc, char *argv[])
{
grub_file_t file = 0;
grub_err_t err;
void *image;
grub_size_t imagesize;
char *fname;
if (argc == 0)
return grub_error (GRUB_ERR_BAD_ARGUMENT, N_("filename expected"));
grub_dl_ref (my_mod);
rel = grub_relocator_new ();
if (!rel)
goto fail;
file = grub_file_open (argv[0]);
if (! file)
goto fail;
if (file->device->net && file->device->net->name)
fname = file->device->net->name;
else
{
fname = argv[0];
if (fname[0] == '(')
{
fname = grub_strchr (fname, ')');
if (fname)
fname++;
else
fname = argv[0];
}
}
grub_memset (boot_file, 0, sizeof (boot_file));
grub_strncpy (boot_file, fname, sizeof (boot_file));
grub_memset (server_name, 0, sizeof (server_name));
if (file->device->net && file->device->net->server)
grub_strncpy (server_name, file->device->net->server, sizeof (server_name));
edx = grub_get_root_biosnumber ();
imagesize = grub_file_size (file);
{
grub_relocator_chunk_t ch;
err = grub_relocator_alloc_chunk_addr (rel, &ch, 0x7c00, imagesize);
if (err)
goto fail;
image = get_virtual_current_address (ch);
}
if (grub_file_read (file, image, imagesize) != (grub_ssize_t) imagesize)
goto fail;
grub_loader_set (grub_pxechain_boot, grub_pxechain_unload,
GRUB_LOADER_FLAG_NORETURN | GRUB_LOADER_FLAG_PXE_NOT_UNLOAD);
return GRUB_ERR_NONE;
fail:
if (file)
grub_file_close (file);
grub_pxechain_unload ();
return grub_errno;
}
