grub_macho_t
grub_macho_open (const char *name, int is_64bit)
{
grub_file_t file;
grub_macho_t macho;
file = grub_file_open (name);
if (! file)
return 0;
macho = grub_macho_file (file, name, is_64bit);
if (! macho)
grub_file_close (file);
return macho;
}
/* Load .kext. */
static grub_err_t
grub_xnu_load_driver (char *infoplistname, grub_file_t binaryfile)
{
grub_macho_t macho;
grub_err_t err;
grub_file_t infoplist;
struct grub_xnu_extheader *exthead;
int neededspace = sizeof (*exthead);
grub_uint8_t *buf;
grub_size_t infoplistsize = 0, machosize = 0;
char *name, *nameend;
int namelen;
name = get_name_ptr (infoplistname);
nameend = grub_strchr (name, '/');
if (nameend)
namelen = nameend - name;
else
namelen = grub_strlen (name);
neededspace += namelen + 1;
if (! grub_xnu_heap_size)
return grub_error (GRUB_ERR_BAD_OS, "no xnu kernel loaded");
/* Compute the needed space. */
if (binaryfile)
{
macho = grub_macho_file (binaryfile);
if (! macho || ! grub_macho_contains_macho32 (macho))
{
if (macho)
grub_macho_close (macho);
return grub_error (GRUB_ERR_BAD_OS,
"extension doesn't contain suitable architecture");
}
if (grub_xnu_is_64bit)
machosize = grub_macho_filesize64 (macho);
else
machosize = grub_macho_filesize32 (macho);
neededspace += machosize;
}
else
macho = 0;
if (infoplistname)
infoplist = grub_gzfile_open (infoplistname, 1);
else
infoplist = 0;
grub_errno = GRUB_ERR_NONE;
if (infoplist)
{
infoplistsize = grub_file_size (infoplist);
neededspace += infoplistsize + 1;
}
else
infoplistsize = 0;
/* Allocate the space. */
err = grub_xnu_align_heap (GRUB_XNU_PAGESIZE);
if (err)
return err;
buf = grub_xnu_heap_malloc (neededspace);
exthead = (struct grub_xnu_extheader *) buf;
grub_memset (exthead, 0, sizeof (*exthead));
buf += sizeof (*exthead);
/* Load the binary. */
if (macho)
{
exthead->binaryaddr = (buf - (grub_uint8_t *) grub_xnu_heap_start)
+ grub_xnu_heap_will_be_at;
exthead->binarysize = machosize;
if (grub_xnu_is_64bit)
err = grub_macho_readfile64 (macho, buf);
else
err = grub_macho_readfile32 (macho, buf);
if (err)
{
grub_macho_close (macho);
return err;
}
grub_macho_close (macho);
buf += machosize;
}
grub_errno = GRUB_ERR_NONE;
/* Load the plist. */
if (infoplist)
{
exthead->infoplistaddr = (buf - (grub_uint8_t *) grub_xnu_heap_start)
+ grub_xnu_heap_will_be_at;
exthead->infoplistsize = infoplistsize + 1;
if (grub_file_read (infoplist, buf, infoplistsize)
!= (grub_ssize_t) (infoplistsize))
{
grub_file_close (infoplist);
grub_error_push ();
return grub_error (GRUB_ERR_BAD_OS, "couldn't read file %s: ",
infoplistname);
}
grub_file_close (infoplist);
buf[infoplistsize] = 0;
buf += infoplistsize + 1;
}
grub_errno = GRUB_ERR_NONE;
exthead->nameaddr = (buf - (grub_uint8_t *) grub_xnu_heap_start)
+ grub_xnu_heap_will_be_at;
exthead->namesize = namelen + 1;
grub_memcpy (buf, name, namelen);
buf[namelen] = 0;
buf += namelen + 1;
/* Announce to kernel */
return grub_xnu_register_memory ("Driver-", &driversnum, exthead,
neededspace);
}
