/* This is similar to grub_file_open. */
static grub_err_t
grub_mofile_open (struct grub_gettext_context *ctx,
const char *filename)
{
struct header head;
grub_err_t err;
grub_file_t fd;
/* Using fd_mo and not another variable because
it's needed for grub_gettext_get_info. */
fd = grub_file_open (filename);
if (!fd)
return grub_errno;
err = grub_gettext_pread (fd, &head, sizeof (head), 0);
if (err)
{
grub_file_close (fd);
return err;
}
if (head.magic != grub_cpu_to_le32_compile_time (MO_MAGIC_NUMBER))
{
grub_file_close (fd);
return grub_error (GRUB_ERR_BAD_FILE_TYPE,
"mo: invalid mo magic in file: %s", filename);
}
if (head.version != 0)
{
grub_file_close (fd);
return grub_error (GRUB_ERR_BAD_FILE_TYPE,
"mo: invalid mo version in file: %s", filename);
}
ctx->grub_gettext_offset_original = grub_le_to_cpu32 (head.offset_original);
ctx->grub_gettext_offset_translation = grub_le_to_cpu32 (head.offset_translation);
ctx->grub_gettext_max = grub_le_to_cpu32 (head.number_of_strings);
for (ctx->grub_gettext_max_log = 0; ctx->grub_gettext_max >> ctx->grub_gettext_max_log;
ctx->grub_gettext_max_log++);
ctx->grub_gettext_msg_list = grub_zalloc (ctx->grub_gettext_max
* sizeof (ctx->grub_gettext_msg_list[0]));
if (!ctx->grub_gettext_msg_list)
{
grub_file_close (fd);
return grub_errno;
}
ctx->fd_mo = fd;
if (grub_gettext != grub_gettext_translate)
{
grub_gettext_original = grub_gettext;
grub_gettext = grub_gettext_translate;
}
return 0;
}
static void
write_fat (FILE *in32, FILE *in64, FILE *out, const char *out_filename,
const char *name32, const char *name64)
{
struct grub_macho_fat_header head;
struct grub_macho_fat_arch arch32, arch64;
grub_uint32_t size32, size64;
char *buf;
fseek (in32, 0, SEEK_END);
size32 = ftell (in32);
fseek (in32, 0, SEEK_SET);
fseek (in64, 0, SEEK_END);
size64 = ftell (in64);
fseek (in64, 0, SEEK_SET);
head.magic = grub_cpu_to_le32_compile_time (GRUB_MACHO_FAT_EFI_MAGIC);
head.nfat_arch = grub_cpu_to_le32_compile_time (2);
arch32.cputype = grub_cpu_to_le32_compile_time (GRUB_MACHO_CPUTYPE_IA32);
arch32.cpusubtype = grub_cpu_to_le32_compile_time (3);
arch32.offset = grub_cpu_to_le32_compile_time (sizeof (head)
+ sizeof (arch32)
+ sizeof (arch64));
arch32.size = grub_cpu_to_le32 (size32);
arch32.align = 0;
arch64.cputype = grub_cpu_to_le32_compile_time (GRUB_MACHO_CPUTYPE_AMD64);
arch64.cpusubtype = grub_cpu_to_le32_compile_time (3);
arch64.offset = grub_cpu_to_le32 (sizeof (head) + sizeof (arch32)
+ sizeof (arch64) + size32);
arch64.size = grub_cpu_to_le32 (size64);
arch64.align = 0;
if (fwrite (&head, 1, sizeof (head), out) != sizeof (head)
|| fwrite (&arch32, 1, sizeof (arch32), out) != sizeof (arch32)
|| fwrite (&arch64, 1, sizeof (arch64), out) != sizeof (arch64))
{
if (out_filename)
grub_util_error ("cannot write to `%s': %s",
out_filename, strerror (errno));
else
grub_util_error ("cannot write to the stdout: %s", strerror (errno));
}
buf = xmalloc (size32);
if (fread (buf, 1, size32, in32) != size32)
grub_util_error (_("cannot read `%s': %s"), name32,
strerror (errno));
if (fwrite (buf, 1, size32, out) != size32)
{
if (out_filename)
grub_util_error ("cannot write to `%s': %s",
out_filename, strerror (errno));
else
grub_util_error ("cannot write to the stdout: %s", strerror (errno));
}
free (buf);
buf = xmalloc (size64);
if (fread (buf, 1, size64, in64) != size64)
grub_util_error (_("cannot read `%s': %s"), name64,
strerror (errno));
if (fwrite (buf, 1, size64, out) != size64)
{
if (out_filename)
grub_util_error ("cannot write to `%s': %s",
out_filename, strerror (errno));
else
grub_util_error ("cannot write to the stdout: %s", strerror (errno));
}
free (buf);
}
static grub_err_t
grub_cmd_file (grub_extcmd_context_t ctxt, int argc, char **args)
{
grub_file_t file = 0;
grub_elf_t elf = 0;
grub_err_t err;
int type = -1, i;
int ret = 0;
grub_macho_t macho = 0;
if (argc == 0)
return grub_error (GRUB_ERR_BAD_ARGUMENT, N_("filename expected"));
for (i = OPT_TYPE_MIN; i <= OPT_TYPE_MAX; i++)
if (ctxt->state[i].set)
{
if (type == -1)
{
type = i;
continue;
}
return grub_error (GRUB_ERR_BAD_ARGUMENT, "multiple types specified");
}
if (type == -1)
return grub_error (GRUB_ERR_BAD_ARGUMENT, "no type specified");
file = grub_file_open (args[0]);
if (!file)
return grub_errno;
switch (type)
{
case IS_BIOS_BOOTSECTOR:
{
grub_uint16_t sig;
if (grub_file_size (file) != 512)
break;
if (grub_file_seek (file, 510) == (grub_size_t) -1)
break;
if (grub_file_read (file, &sig, 2) != 2)
break;
if (sig != grub_cpu_to_le16_compile_time (0xaa55))
break;
ret = 1;
break;
}
case IS_IA64_LINUX:
{
Elf64_Ehdr ehdr;
if (grub_file_read (file, &ehdr, sizeof (ehdr)) != sizeof (ehdr))
break;
if (ehdr.e_ident[EI_MAG0] != ELFMAG0
|| ehdr.e_ident[EI_MAG1] != ELFMAG1
|| ehdr.e_ident[EI_MAG2] != ELFMAG2
|| ehdr.e_ident[EI_MAG3] != ELFMAG3
|| ehdr.e_ident[EI_VERSION] != EV_CURRENT
|| ehdr.e_version != EV_CURRENT)
break;
if (ehdr.e_ident[EI_CLASS] != ELFCLASS64
|| ehdr.e_ident[EI_DATA] != ELFDATA2LSB
|| ehdr.e_machine != grub_cpu_to_le16_compile_time (EM_IA_64))
break;
ret = 1;
break;
}
case IS_SPARC64_LINUX:
{
Elf64_Ehdr ehdr;
if (grub_file_read (file, &ehdr, sizeof (ehdr)) != sizeof (ehdr))
break;
if (ehdr.e_ident[EI_MAG0] != ELFMAG0
|| ehdr.e_ident[EI_MAG1] != ELFMAG1
|| ehdr.e_ident[EI_MAG2] != ELFMAG2
|| ehdr.e_ident[EI_MAG3] != ELFMAG3
|| ehdr.e_ident[EI_VERSION] != EV_CURRENT
|| ehdr.e_version != EV_CURRENT)
break;
if (ehdr.e_ident[EI_CLASS] != ELFCLASS64
|| ehdr.e_ident[EI_DATA] != ELFDATA2MSB)
break;
if (ehdr.e_machine != grub_cpu_to_le16_compile_time (EM_SPARCV9)
|| ehdr.e_type != grub_cpu_to_be16_compile_time (ET_EXEC))
break;
ret = 1;
break;
}
case IS_POWERPC_LINUX:
{
Elf32_Ehdr ehdr;
if (grub_file_read (file, &ehdr, sizeof (ehdr)) != sizeof (ehdr))
break;
if (ehdr.e_ident[EI_MAG0] != ELFMAG0
|| ehdr.e_ident[EI_MAG1] != ELFMAG1
|| ehdr.e_ident[EI_MAG2] != ELFMAG2
|| ehdr.e_ident[EI_MAG3] != ELFMAG3
|| ehdr.e_ident[EI_VERSION] != EV_CURRENT
|| ehdr.e_version != EV_CURRENT)
break;
if (ehdr.e_ident[EI_DATA] != ELFDATA2MSB
|| (ehdr.e_machine != grub_cpu_to_le16_compile_time (EM_PPC)
&& ehdr.e_machine !=
grub_cpu_to_le16_compile_time (EM_PPC64)))
break;
if (ehdr.e_type != grub_cpu_to_be16_compile_time (ET_EXEC)
&& ehdr.e_type != grub_cpu_to_be16_compile_time (ET_DYN))
break;
ret = 1;
break;
}
case IS_MIPS_LINUX:
{
Elf32_Ehdr ehdr;
if (grub_file_read (file, &ehdr, sizeof (ehdr)) != sizeof (ehdr))
break;
if (ehdr.e_ident[EI_MAG0] != ELFMAG0
|| ehdr.e_ident[EI_MAG1] != ELFMAG1
|| ehdr.e_ident[EI_MAG2] != ELFMAG2
|| ehdr.e_ident[EI_MAG3] != ELFMAG3
|| ehdr.e_ident[EI_VERSION] != EV_CURRENT
|| ehdr.e_version != EV_CURRENT)
break;
if (ehdr.e_ident[EI_DATA] != ELFDATA2MSB
|| ehdr.e_machine != grub_cpu_to_be16_compile_time (EM_MIPS)
|| ehdr.e_type != grub_cpu_to_be16_compile_time (ET_EXEC))
break;
ret = 1;
break;
}
case IS_X86_KNETBSD:
case IS_X86_KNETBSD32:
case IS_X86_KNETBSD64:
{
int is32, is64;
elf = grub_elf_file (file, file->name);
if (elf->ehdr.ehdr32.e_type != grub_cpu_to_le16_compile_time (ET_EXEC)
|| elf->ehdr.ehdr32.e_ident[EI_DATA] != ELFDATA2LSB)
break;
is32 = grub_elf_is_elf32 (elf);
is64 = grub_elf_is_elf64 (elf);
if (!is32 && !is64)
break;
if (!is32 && type == IS_X86_KNETBSD32)
break;
if (!is64 && type == IS_X86_KNETBSD64)
break;
if (is64)
ret = grub_file_check_netbsd64 (elf);
if (is32)
ret = grub_file_check_netbsd32 (elf);
break;
}
case IS_X86_KFREEBSD:
case IS_X86_KFREEBSD32:
case IS_X86_KFREEBSD64:
{
Elf32_Ehdr ehdr;
int is32, is64;
if (grub_file_read (file, &ehdr, sizeof (ehdr)) != sizeof (ehdr))
break;
if (ehdr.e_ident[EI_MAG0] != ELFMAG0
|| ehdr.e_ident[EI_MAG1] != ELFMAG1
|| ehdr.e_ident[EI_MAG2] != ELFMAG2
|| ehdr.e_ident[EI_MAG3] != ELFMAG3
|| ehdr.e_ident[EI_VERSION] != EV_CURRENT
|| ehdr.e_version != EV_CURRENT)
break;
if (ehdr.e_type != grub_cpu_to_le16_compile_time (ET_EXEC)
|| ehdr.e_ident[EI_DATA] != ELFDATA2LSB)
break;
if (ehdr.e_ident[EI_OSABI] != ELFOSABI_FREEBSD)
break;
is32 = (ehdr.e_machine == grub_cpu_to_le16_compile_time (EM_386)
&& ehdr.e_ident[EI_CLASS] == ELFCLASS32);
is64 = (ehdr.e_machine == grub_cpu_to_le16_compile_time (EM_X86_64)
&& ehdr.e_ident[EI_CLASS] == ELFCLASS64);
if (!is32 && !is64)
break;
if (!is32 && (type == IS_X86_KFREEBSD32 || type == IS_X86_KNETBSD32))
break;
if (!is64 && (type == IS_X86_KFREEBSD64 || type == IS_X86_KNETBSD64))
break;
ret = 1;
break;
}
case IS_MIPSEL_LINUX:
{
Elf32_Ehdr ehdr;
if (grub_file_read (file, &ehdr, sizeof (ehdr)) != sizeof (ehdr))
break;
if (ehdr.e_ident[EI_MAG0] != ELFMAG0
|| ehdr.e_ident[EI_MAG1] != ELFMAG1
|| ehdr.e_ident[EI_MAG2] != ELFMAG2
|| ehdr.e_ident[EI_MAG3] != ELFMAG3
|| ehdr.e_ident[EI_VERSION] != EV_CURRENT
|| ehdr.e_version != EV_CURRENT)
break;
if (ehdr.e_machine != grub_cpu_to_le16_compile_time (EM_MIPS)
|| ehdr.e_type != grub_cpu_to_le16_compile_time (ET_EXEC))
break;
ret = 1;
break;
}
case IS_ARM_LINUX:
{
grub_uint32_t sig, sig_pi;
if (grub_file_read (file, &sig_pi, 4) != 4)
break;
/* Raspberry pi. */
if (sig_pi == grub_cpu_to_le32_compile_time (0xea000006))
{
ret = 1;
break;
}
if (grub_file_seek (file, 0x24) == (grub_size_t) -1)
break;
if (grub_file_read (file, &sig, 4) != 4)
break;
if (sig == grub_cpu_to_le32_compile_time (0x016f2818))
{
ret = 1;
break;
}
break;
}
case IS_ARM64_LINUX:
{
grub_uint32_t sig;
if (grub_file_seek (file, 0x38) == (grub_size_t) -1)
break;
if (grub_file_read (file, &sig, 4) != 4)
break;
if (sig == grub_cpu_to_le32_compile_time (0x644d5241))
{
ret = 1;
break;
}
break;
}
case IS_PAE_DOMU ... IS_DOM0:
{
struct grub_xen_file_info xen_inf;
elf = grub_xen_file (file);
if (!elf)
break;
err = grub_xen_get_info (elf, &xen_inf);
if (err)
break;
/* Unfortuntely no way to check if kernel supports dom0. */
if (type == IS_DOM0)
ret = 1;
if (type == IS_PAE_DOMU)
ret = (xen_inf.arch == GRUB_XEN_FILE_I386_PAE
|| xen_inf.arch == GRUB_XEN_FILE_I386_PAE_BIMODE);
if (type == IS_64_DOMU)
ret = (xen_inf.arch == GRUB_XEN_FILE_X86_64);
break;
}
case IS_MULTIBOOT:
case IS_MULTIBOOT2:
{
grub_uint32_t *buffer;
grub_ssize_t len;
grub_size_t search_size;
grub_uint32_t *header;
grub_uint32_t magic;
grub_size_t step;
if (type == IS_MULTIBOOT2)
{
search_size = 32768;
magic = grub_cpu_to_le32_compile_time (0xe85250d6);
step = 2;
}
else
{
search_size = 8192;
magic = grub_cpu_to_le32_compile_time (0x1BADB002);
step = 1;
}
buffer = grub_malloc (search_size);
if (!buffer)
break;
len = grub_file_read (file, buffer, search_size);
if (len < 32)
{
grub_free (buffer);
break;
}
/* Look for the multiboot header in the buffer. The header should
be at least 12 bytes and aligned on a 4-byte boundary. */
for (header = buffer;
((char *) header <=
(char *) buffer + len - (type == IS_MULTIBOOT2 ? 16 : 12))
|| (header = 0); header += step)
{
if (header[0] == magic
&& !(grub_le_to_cpu32 (header[0])
+ grub_le_to_cpu32 (header[1])
+ grub_le_to_cpu32 (header[2])
+ (type == IS_MULTIBOOT2
? grub_le_to_cpu32 (header[3]) : 0)))
break;
}
if (header != 0)
ret = 1;
grub_free (buffer);
break;
}
case IS_X86_LINUX32:
case IS_X86_LINUX:
{
struct linux_kernel_header lh;
if (grub_file_read (file, &lh, sizeof (lh)) != sizeof (lh))
break;
if (lh.boot_flag != grub_cpu_to_le16_compile_time (0xaa55))
break;
if (lh.setup_sects > GRUB_LINUX_MAX_SETUP_SECTS)
break;
/* FIXME: some really old kernels (< 1.3.73) will fail this. */
if (lh.header !=
grub_cpu_to_le32_compile_time (GRUB_LINUX_MAGIC_SIGNATURE)
|| grub_le_to_cpu16 (lh.version) < 0x0200)
break;
if (type == IS_X86_LINUX)
{
ret = 1;
break;
}
/* FIXME: 2.03 is not always good enough (Linux 2.4 can be 2.03 and
still not support 32-bit boot. */
if (lh.header !=
grub_cpu_to_le32_compile_time (GRUB_LINUX_MAGIC_SIGNATURE)
|| grub_le_to_cpu16 (lh.version) < 0x0203)
break;
if (!(lh.loadflags & GRUB_LINUX_FLAG_BIG_KERNEL))
break;
ret = 1;
break;
}
case IS_HIBERNATED:
{
grub_uint8_t hibr_file_magic[4];
if (grub_file_read (file, &hibr_file_magic, sizeof (hibr_file_magic))
!= sizeof (hibr_file_magic))
break;
if (grub_memcmp ("hibr", hibr_file_magic, sizeof (hibr_file_magic)) ==
0
|| grub_memcmp ("HIBR", hibr_file_magic,
sizeof (hibr_file_magic)) == 0)
ret = 1;
break;
}
case IS_XNU64:
case IS_XNU32:
{
macho = grub_macho_open (args[0], (type == IS_XNU64));
if (!macho)
break;
/* FIXME: more checks? */
ret = 1;
break;
}
case IS_XNU_HIBR:
{
struct grub_xnu_hibernate_header hibhead;
if (grub_file_read (file, &hibhead, sizeof (hibhead))
!= sizeof (hibhead))
break;
if (hibhead.magic !=
grub_cpu_to_le32_compile_time (GRUB_XNU_HIBERNATE_MAGIC))
break;
ret = 1;
break;
}
case IS_32_EFI:
case IS_64_EFI:
case IS_IA_EFI:
case IS_ARM64_EFI:
case IS_ARM_EFI:
{
char signature[4];
grub_uint32_t pe_offset;
struct grub_pe32_coff_header coff_head;
if (grub_file_read (file, signature, 2) != 2)
break;
if (signature[0] != 'M' || signature[1] != 'Z')
break;
if ((grub_ssize_t) grub_file_seek (file, 0x3c) == -1)
break;
if (grub_file_read (file, &pe_offset, 4) != 4)
break;
if ((grub_ssize_t) grub_file_seek (file, grub_le_to_cpu32 (pe_offset))
== -1)
break;
if (grub_file_read (file, signature, 4) != 4)
break;
if (signature[0] != 'P' || signature[1] != 'E'
|| signature[2] != '\0' || signature[3] != '\0')
break;
if (grub_file_read (file, &coff_head, sizeof (coff_head))
!= sizeof (coff_head))
break;
if (type == IS_32_EFI
&& coff_head.machine !=
grub_cpu_to_le16_compile_time (GRUB_PE32_MACHINE_I386))
break;
if (type == IS_64_EFI
&& coff_head.machine !=
grub_cpu_to_le16_compile_time (GRUB_PE32_MACHINE_X86_64))
break;
if (type == IS_IA_EFI
&& coff_head.machine !=
grub_cpu_to_le16_compile_time (GRUB_PE32_MACHINE_IA64))
break;
if (type == IS_ARM64_EFI
&& coff_head.machine !=
grub_cpu_to_le16_compile_time (GRUB_PE32_MACHINE_ARM64))
break;
if (type == IS_ARM_EFI
&& coff_head.machine !=
grub_cpu_to_le16_compile_time (GRUB_PE32_MACHINE_ARMTHUMB_MIXED))
break;
if (type == IS_IA_EFI || type == IS_64_EFI || type == IS_ARM64_EFI)
{
struct grub_pe64_optional_header o64;
if (grub_file_read (file, &o64, sizeof (o64)) != sizeof (o64))
break;
if (o64.magic !=
grub_cpu_to_le16_compile_time (GRUB_PE32_PE64_MAGIC))
break;
if (o64.subsystem !=
grub_cpu_to_le16_compile_time
(GRUB_PE32_SUBSYSTEM_EFI_APPLICATION))
break;
ret = 1;
break;
}
if (type == IS_32_EFI || type == IS_ARM_EFI)
{
struct grub_pe32_optional_header o32;
if (grub_file_read (file, &o32, sizeof (o32)) != sizeof (o32))
break;
if (o32.magic !=
grub_cpu_to_le16_compile_time (GRUB_PE32_PE32_MAGIC))
break;
if (o32.subsystem !=
grub_cpu_to_le16_compile_time
(GRUB_PE32_SUBSYSTEM_EFI_APPLICATION))
break;
ret = 1;
break;
}
break;
}
}
if (elf)
grub_elf_close (elf);
else if (macho)
grub_macho_close (macho);
else if (file)
grub_file_close (file);
if (!ret && (grub_errno == GRUB_ERR_BAD_OS || grub_errno == GRUB_ERR_NONE))
/* TRANSLATORS: it's a standalone boolean value,
opposite of "true". */
grub_error (GRUB_ERR_TEST_FAILURE, N_("false"));
return grub_errno;
}
static struct grub_diskfilter_vg *
grub_mdraid_detect (grub_disk_t disk,
struct grub_diskfilter_pv_id *id,
grub_disk_addr_t *start_sector)
{
grub_uint64_t size;
grub_uint8_t minor_version;
size = grub_disk_get_size (disk);
/* Check for an 1.x superblock.
* It's always aligned to a 4K boundary
* and depending on the minor version it can be:
* 0: At least 8K, but less than 12K, from end of device
* 1: At start of device
* 2: 4K from start of device.
*/
for (minor_version = 0; minor_version < 3; ++minor_version)
{
grub_disk_addr_t sector = 0;
struct grub_raid_super_1x sb;
grub_uint16_t role;
grub_uint32_t level;
struct grub_diskfilter_vg *array;
char *uuid;
if (size == GRUB_DISK_SIZE_UNKNOWN && minor_version == 0)
continue;
switch (minor_version)
{
case 0:
sector = (size - 8 * 2) & ~(4 * 2 - 1);
break;
case 1:
sector = 0;
break;
case 2:
sector = 4 * 2;
break;
}
if (grub_disk_read (disk, sector, 0, sizeof (struct grub_raid_super_1x),
&sb))
return NULL;
if (sb.magic != grub_cpu_to_le32_compile_time (SB_MAGIC)
|| grub_le_to_cpu64 (sb.super_offset) != sector)
continue;
if (sb.major_version != grub_cpu_to_le32_compile_time (1))
/* Unsupported version. */
return NULL;
level = grub_le_to_cpu32 (sb.level);
/* Multipath. */
if ((int) level == -4)
level = 1;
if (level != 0 && level != 1 && level != 4 &&
level != 5 && level != 6 && level != 10)
{
grub_error (GRUB_ERR_NOT_IMPLEMENTED_YET,
"Unsupported RAID level: %d", sb.level);
return NULL;
}
if (grub_le_to_cpu32 (sb.dev_number) >=
grub_le_to_cpu32 (sb.max_dev))
/* Spares aren't implemented. */
return NULL;
if (grub_disk_read (disk, sector,
(char *) &sb.dev_roles[grub_le_to_cpu32 (sb.dev_number)]
- (char *) &sb,
sizeof (role), &role))
return NULL;
if (grub_le_to_cpu16 (role)
>= grub_le_to_cpu32 (sb.raid_disks))
/* Spares aren't implemented. */
return NULL;
id->uuidlen = 0;
id->id = grub_le_to_cpu16 (role);
uuid = grub_malloc (16);
if (!uuid)
return NULL;
grub_memcpy (uuid, sb.set_uuid, 16);
*start_sector = grub_le_to_cpu64 (sb.data_offset);
array = grub_diskfilter_make_raid (16, uuid,
grub_le_to_cpu32 (sb.raid_disks),
sb.set_name,
(sb.size)
? grub_le_to_cpu64 (sb.size)
: grub_le_to_cpu64 (sb.data_size),
grub_le_to_cpu32 (sb.chunksize),
grub_le_to_cpu32 (sb.layout),
grub_le_to_cpu32 (sb.level));
return array;
}
/* not 1.x raid. */
return NULL;
}
static grub_err_t
hfsplus_open_compressed_real (struct grub_hfsplus_file *node)
{
grub_err_t err;
struct grub_hfsplus_btnode *attr_node;
grub_off_t attr_off;
struct grub_hfsplus_key_internal key;
struct grub_hfsplus_attr_header *attr_head;
struct grub_hfsplus_compress_attr *cmp_head;
#define c grub_cpu_to_be16_compile_time
const grub_uint16_t compress_attr_name[] =
{
c('c'), c('o'), c('m'), c('.'), c('a'), c('p'), c('p'), c('l'), c('e'),
c('.'), c('d'), c('e'), c('c'), c('m'), c('p'), c('f'), c('s') };
#undef c
if (node->size)
return 0;
key.attrkey.cnid = node->fileid;
key.attrkey.namelen = sizeof (compress_attr_name) / sizeof (compress_attr_name[0]);
key.attrkey.name = compress_attr_name;
err = grub_hfsplus_btree_search (&node->data->attr_tree, &key,
grub_hfsplus_cmp_attrkey,
&attr_node, &attr_off);
if (err || !attr_node)
{
grub_errno = 0;
return 0;
}
attr_head = (struct grub_hfsplus_attr_header *)
((char *) grub_hfsplus_btree_recptr (&node->data->attr_tree,
attr_node, attr_off)
+ sizeof (struct grub_hfsplus_attrkey) + sizeof (compress_attr_name));
if (attr_head->type != 0x10
|| !(attr_head->size & grub_cpu_to_be64_compile_time(~0xfULL)))
{
grub_free (attr_node);
return 0;
}
cmp_head = (struct grub_hfsplus_compress_attr *) (attr_head + 1);
if (cmp_head->magic != grub_cpu_to_be32_compile_time (0x66706d63))
{
grub_free (attr_node);
return 0;
}
node->size = grub_le_to_cpu32 (cmp_head->uncompressed_inline_size);
if (cmp_head->type == grub_cpu_to_le32_compile_time (HFSPLUS_COMPRESSION_RESOURCE))
{
grub_uint32_t index_size;
node->compressed = 2;
if (grub_hfsplus_read_file (node, 0, 0,
0x104, sizeof (index_size),
(char *) &index_size)
!= 4)
{
node->compressed = 0;
grub_free (attr_node);
grub_errno = 0;
return 0;
}
node->compress_index_size = grub_le_to_cpu32 (index_size);
node->compress_index = grub_malloc (node->compress_index_size
* sizeof (node->compress_index[0]));
if (!node->compress_index)
{
node->compressed = 0;
grub_free (attr_node);
return grub_errno;
}
if (grub_hfsplus_read_file (node, 0, 0,
0x104 + sizeof (index_size),
node->compress_index_size
* sizeof (node->compress_index[0]),
(char *) node->compress_index)
!= (grub_ssize_t) (node->compress_index_size
* sizeof (node->compress_index[0])))
{
node->compressed = 0;
grub_free (attr_node);
grub_free (node->compress_index);
grub_errno = 0;
return 0;
}
node->cbuf_block = -1;
node->cbuf = grub_malloc (HFSPLUS_COMPRESS_BLOCK_SIZE);
grub_free (attr_node);
if (!node->cbuf)
{
node->compressed = 0;
grub_free (node->compress_index);
return grub_errno;
}
return 0;
}
if (cmp_head->type != HFSPLUS_COMPRESSION_INLINE)
{
grub_free (attr_node);
return 0;
}
node->cbuf = grub_malloc (node->size);
if (!node->cbuf)
return grub_errno;
if (grub_zlib_decompress ((char *) (cmp_head + 1),
grub_cpu_to_be64 (attr_head->size)
- sizeof (*cmp_head), 0,
node->cbuf, node->size) < 0)
return grub_errno;
node->compressed = 1;
return 0;
}
