| /* |
| * Copyright (C) 2007 Karel Zak <kzak@redhat.com> |
| * Copyright (C) 2012 Davidlohr Bueso <dave@gnu.org> |
| * |
| * GUID Partition Table (GPT) support. Based on UEFI Specs 2.3.1 |
| * Chapter 5: GUID Partition Table (GPT) Disk Layout (Jun 27th, 2012). |
| * Some ideas and inspiration from GNU parted and gptfdisk. |
| */ |
| #include <stdio.h> |
| #include <string.h> |
| #include <stdlib.h> |
| #include <inttypes.h> |
| #include <sys/stat.h> |
| #include <sys/utsname.h> |
| #include <sys/types.h> |
| #include <fcntl.h> |
| #include <unistd.h> |
| #include <errno.h> |
| #include <ctype.h> |
| #include <uuid.h> |
| |
| #include "fdiskP.h" |
| |
| #include "crc32.h" |
| #include "blkdev.h" |
| #include "bitops.h" |
| #include "strutils.h" |
| #include "all-io.h" |
| #include "pt-mbr.h" |
| |
| /** |
| * SECTION: gpt |
| * @title: UEFI GPT |
| * @short_description: specific functionality |
| */ |
| |
| #define GPT_HEADER_SIGNATURE 0x5452415020494645LL /* EFI PART */ |
| #define GPT_HEADER_REVISION_V1_02 0x00010200 |
| #define GPT_HEADER_REVISION_V1_00 0x00010000 |
| #define GPT_HEADER_REVISION_V0_99 0x00009900 |
| #define GPT_HEADER_MINSZ 92 /* bytes */ |
| |
| #define GPT_PMBR_LBA 0 |
| #define GPT_MBR_PROTECTIVE 1 |
| #define GPT_MBR_HYBRID 2 |
| |
| #define GPT_PRIMARY_PARTITION_TABLE_LBA 0x00000001ULL |
| |
| #define EFI_PMBR_OSTYPE 0xEE |
| #define MSDOS_MBR_SIGNATURE 0xAA55 |
| #define GPT_PART_NAME_LEN (72 / sizeof(uint16_t)) |
| #define GPT_NPARTITIONS FDISK_GPT_NPARTITIONS_DEFAULT |
| |
| /* Globally unique identifier */ |
| struct gpt_guid { |
| uint32_t time_low; |
| uint16_t time_mid; |
| uint16_t time_hi_and_version; |
| uint8_t clock_seq_hi; |
| uint8_t clock_seq_low; |
| uint8_t node[6]; |
| }; |
| |
| |
| /* only checking that the GUID is 0 is enough to verify an empty partition. */ |
| #define GPT_UNUSED_ENTRY_GUID \ |
| ((struct gpt_guid) { 0x00000000, 0x0000, 0x0000, 0x00, 0x00, \ |
| { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }}) |
| |
| /* Linux native partition type */ |
| #define GPT_DEFAULT_ENTRY_TYPE "0FC63DAF-8483-4772-8E79-3D69D8477DE4" |
| |
| /* |
| * Attribute bits |
| */ |
| enum { |
| /* UEFI specific */ |
| GPT_ATTRBIT_REQ = 0, |
| GPT_ATTRBIT_NOBLOCK = 1, |
| GPT_ATTRBIT_LEGACY = 2, |
| |
| /* GUID specific (range 48..64)*/ |
| GPT_ATTRBIT_GUID_FIRST = 48, |
| GPT_ATTRBIT_GUID_COUNT = 16 |
| }; |
| |
| #define GPT_ATTRSTR_REQ "RequiredPartition" |
| #define GPT_ATTRSTR_REQ_TYPO "RequiredPartiton" |
| #define GPT_ATTRSTR_NOBLOCK "NoBlockIOProtocol" |
| #define GPT_ATTRSTR_LEGACY "LegacyBIOSBootable" |
| |
| /* The GPT Partition entry array contains an array of GPT entries. */ |
| struct gpt_entry { |
| struct gpt_guid type; /* purpose and type of the partition */ |
| struct gpt_guid partition_guid; |
| uint64_t lba_start; |
| uint64_t lba_end; |
| uint64_t attrs; |
| uint16_t name[GPT_PART_NAME_LEN]; |
| } __attribute__ ((packed)); |
| |
| /* GPT header */ |
| struct gpt_header { |
| uint64_t signature; /* header identification */ |
| uint32_t revision; /* header version */ |
| uint32_t size; /* in bytes */ |
| uint32_t crc32; /* header CRC checksum */ |
| uint32_t reserved1; /* must be 0 */ |
| uint64_t my_lba; /* LBA of block that contains this struct (LBA 1) */ |
| uint64_t alternative_lba; /* backup GPT header */ |
| uint64_t first_usable_lba; /* first usable logical block for partitions */ |
| uint64_t last_usable_lba; /* last usable logical block for partitions */ |
| struct gpt_guid disk_guid; /* unique disk identifier */ |
| uint64_t partition_entry_lba; /* LBA of start of partition entries array */ |
| uint32_t npartition_entries; /* total partition entries - normally 128 */ |
| uint32_t sizeof_partition_entry; /* bytes for each GUID pt */ |
| uint32_t partition_entry_array_crc32; /* partition CRC checksum */ |
| uint8_t reserved2[512 - 92]; /* must all be 0 */ |
| } __attribute__ ((packed)); |
| |
| struct gpt_record { |
| uint8_t boot_indicator; /* unused by EFI, set to 0x80 for bootable */ |
| uint8_t start_head; /* unused by EFI, pt start in CHS */ |
| uint8_t start_sector; /* unused by EFI, pt start in CHS */ |
| uint8_t start_track; |
| uint8_t os_type; /* EFI and legacy non-EFI OS types */ |
| uint8_t end_head; /* unused by EFI, pt end in CHS */ |
| uint8_t end_sector; /* unused by EFI, pt end in CHS */ |
| uint8_t end_track; /* unused by EFI, pt end in CHS */ |
| uint32_t starting_lba; /* used by EFI - start addr of the on disk pt */ |
| uint32_t size_in_lba; /* used by EFI - size of pt in LBA */ |
| } __attribute__ ((packed)); |
| |
| /* Protected MBR and legacy MBR share same structure */ |
| struct gpt_legacy_mbr { |
| uint8_t boot_code[440]; |
| uint32_t unique_mbr_signature; |
| uint16_t unknown; |
| struct gpt_record partition_record[4]; |
| uint16_t signature; |
| } __attribute__ ((packed)); |
| |
| /* |
| * Here be dragons! |
| * See: http://en.wikipedia.org/wiki/GUID_Partition_Table#Partition_type_GUIDs |
| */ |
| #define DEF_GUID(_u, _n) \ |
| { \ |
| .typestr = (_u), \ |
| .name = (_n), \ |
| } |
| |
| /* Probably the most complete list of the GUIDs are at: |
| * https://wikipedia.org/wiki/GUID_Partition_Table |
| */ |
| static struct fdisk_parttype gpt_parttypes[] = |
| { |
| /* Generic OS */ |
| DEF_GUID("C12A7328-F81F-11D2-BA4B-00A0C93EC93B", N_("EFI System")), |
| |
| DEF_GUID("024DEE41-33E7-11D3-9D69-0008C781F39F", N_("MBR partition scheme")), |
| DEF_GUID("D3BFE2DE-3DAF-11DF-BA40-E3A556D89593", N_("Intel Fast Flash")), |
| |
| /* Hah!IdontneedEFI */ |
| DEF_GUID("21686148-6449-6E6F-744E-656564454649", N_("BIOS boot")), |
| |
| /* NIH syndrome */ |
| DEF_GUID("F4019732-066E-4E12-8273-346C5641494F", N_("Sony boot partition")), |
| DEF_GUID("BFBFAFE7-A34F-448A-9A5B-6213EB736C22", N_("Lenovo boot partition")), |
| |
| /* PowerPC reference platform boot partition */ |
| DEF_GUID("9E1A2D38-C612-4316-AA26-8B49521E5A8B", N_("PowerPC PReP boot")), |
| |
| /* Open Network Install Environment */ |
| DEF_GUID("7412F7D5-A156-4B13-81DC-867174929325", N_("ONIE boot")), |
| DEF_GUID("D4E6E2CD-4469-46F3-B5CB-1BFF57AFC149", N_("ONIE config")), |
| |
| /* Windows */ |
| DEF_GUID("E3C9E316-0B5C-4DB8-817D-F92DF00215AE", N_("Microsoft reserved")), |
| DEF_GUID("EBD0A0A2-B9E5-4433-87C0-68B6B72699C7", N_("Microsoft basic data")), |
| DEF_GUID("5808C8AA-7E8F-42E0-85D2-E1E90434CFB3", N_("Microsoft LDM metadata")), |
| DEF_GUID("AF9B60A0-1431-4F62-BC68-3311714A69AD", N_("Microsoft LDM data")), |
| DEF_GUID("DE94BBA4-06D1-4D40-A16A-BFD50179D6AC", N_("Windows recovery environment")), |
| DEF_GUID("37AFFC90-EF7D-4E96-91C3-2D7AE055B174", N_("IBM General Parallel Fs")), |
| DEF_GUID("E75CAF8F-F680-4CEE-AFA3-B001E56EFC2D", N_("Microsoft Storage Spaces")), |
| |
| /* HP-UX */ |
| DEF_GUID("75894C1E-3AEB-11D3-B7C1-7B03A0000000", N_("HP-UX data")), |
| DEF_GUID("E2A1E728-32E3-11D6-A682-7B03A0000000", N_("HP-UX service")), |
| |
| /* Linux (http://www.freedesktop.org/wiki/Specifications/DiscoverablePartitionsSpec) */ |
| DEF_GUID("0657FD6D-A4AB-43C4-84E5-0933C84B4F4F", N_("Linux swap")), |
| DEF_GUID("0FC63DAF-8483-4772-8E79-3D69D8477DE4", N_("Linux filesystem")), |
| DEF_GUID("3B8F8425-20E0-4F3B-907F-1A25A76F98E8", N_("Linux server data")), |
| DEF_GUID("44479540-F297-41B2-9AF7-D131D5F0458A", N_("Linux root (x86)")), |
| DEF_GUID("69DAD710-2CE4-4E3C-B16C-21A1D49ABED3", N_("Linux root (ARM)")), |
| DEF_GUID("4F68BCE3-E8CD-4DB1-96E7-FBCAF984B709", N_("Linux root (x86-64)")), |
| DEF_GUID("B921B045-1DF0-41C3-AF44-4C6F280D3FAE", N_("Linux root (ARM-64)")), |
| DEF_GUID("993D8D3D-F80E-4225-855A-9DAF8ED7EA97", N_("Linux root (IA-64)")), |
| DEF_GUID("8DA63339-0007-60C0-C436-083AC8230908", N_("Linux reserved")), |
| DEF_GUID("933AC7E1-2EB4-4F13-B844-0E14E2AEF915", N_("Linux home")), |
| DEF_GUID("A19D880F-05FC-4D3B-A006-743F0F84911E", N_("Linux RAID")), |
| DEF_GUID("BC13C2FF-59E6-4262-A352-B275FD6F7172", N_("Linux extended boot")), |
| DEF_GUID("E6D6D379-F507-44C2-A23C-238F2A3DF928", N_("Linux LVM")), |
| /* ... too crazy, ignore for now: |
| DEF_GUID("7FFEC5C9-2D00-49B7-8941-3EA10A5586B7", N_("Linux plain dm-crypt")), |
| DEF_GUID("CA7D7CCB-63ED-4C53-861C-1742536059CC", N_("Linux LUKS")), |
| */ |
| |
| /* FreeBSD */ |
| DEF_GUID("516E7CB4-6ECF-11D6-8FF8-00022D09712B", N_("FreeBSD data")), |
| DEF_GUID("83BD6B9D-7F41-11DC-BE0B-001560B84F0F", N_("FreeBSD boot")), |
| DEF_GUID("516E7CB5-6ECF-11D6-8FF8-00022D09712B", N_("FreeBSD swap")), |
| DEF_GUID("516E7CB6-6ECF-11D6-8FF8-00022D09712B", N_("FreeBSD UFS")), |
| DEF_GUID("516E7CBA-6ECF-11D6-8FF8-00022D09712B", N_("FreeBSD ZFS")), |
| DEF_GUID("516E7CB8-6ECF-11D6-8FF8-00022D09712B", N_("FreeBSD Vinum")), |
| |
| /* Apple OSX */ |
| DEF_GUID("48465300-0000-11AA-AA11-00306543ECAC", N_("Apple HFS/HFS+")), |
| DEF_GUID("55465300-0000-11AA-AA11-00306543ECAC", N_("Apple UFS")), |
| DEF_GUID("52414944-0000-11AA-AA11-00306543ECAC", N_("Apple RAID")), |
| DEF_GUID("52414944-5F4F-11AA-AA11-00306543ECAC", N_("Apple RAID offline")), |
| DEF_GUID("426F6F74-0000-11AA-AA11-00306543ECAC", N_("Apple boot")), |
| DEF_GUID("4C616265-6C00-11AA-AA11-00306543ECAC", N_("Apple label")), |
| DEF_GUID("5265636F-7665-11AA-AA11-00306543ECAC", N_("Apple TV recovery")), |
| DEF_GUID("53746F72-6167-11AA-AA11-00306543ECAC", N_("Apple Core storage")), |
| |
| /* Solaris */ |
| DEF_GUID("6A82CB45-1DD2-11B2-99A6-080020736631", N_("Solaris boot")), |
| DEF_GUID("6A85CF4D-1DD2-11B2-99A6-080020736631", N_("Solaris root")), |
| /* same as Apple ZFS */ |
| DEF_GUID("6A898CC3-1DD2-11B2-99A6-080020736631", N_("Solaris /usr & Apple ZFS")), |
| DEF_GUID("6A87C46F-1DD2-11B2-99A6-080020736631", N_("Solaris swap")), |
| DEF_GUID("6A8B642B-1DD2-11B2-99A6-080020736631", N_("Solaris backup")), |
| DEF_GUID("6A8EF2E9-1DD2-11B2-99A6-080020736631", N_("Solaris /var")), |
| DEF_GUID("6A90BA39-1DD2-11B2-99A6-080020736631", N_("Solaris /home")), |
| DEF_GUID("6A9283A5-1DD2-11B2-99A6-080020736631", N_("Solaris alternate sector")), |
| DEF_GUID("6A945A3B-1DD2-11B2-99A6-080020736631", N_("Solaris reserved 1")), |
| DEF_GUID("6A9630D1-1DD2-11B2-99A6-080020736631", N_("Solaris reserved 2")), |
| DEF_GUID("6A980767-1DD2-11B2-99A6-080020736631", N_("Solaris reserved 3")), |
| DEF_GUID("6A96237F-1DD2-11B2-99A6-080020736631", N_("Solaris reserved 4")), |
| DEF_GUID("6A8D2AC7-1DD2-11B2-99A6-080020736631", N_("Solaris reserved 5")), |
| |
| /* NetBSD */ |
| DEF_GUID("49F48D32-B10E-11DC-B99B-0019D1879648", N_("NetBSD swap")), |
| DEF_GUID("49F48D5A-B10E-11DC-B99B-0019D1879648", N_("NetBSD FFS")), |
| DEF_GUID("49F48D82-B10E-11DC-B99B-0019D1879648", N_("NetBSD LFS")), |
| DEF_GUID("2DB519C4-B10E-11DC-B99B-0019D1879648", N_("NetBSD concatenated")), |
| DEF_GUID("2DB519EC-B10E-11DC-B99B-0019D1879648", N_("NetBSD encrypted")), |
| DEF_GUID("49F48DAA-B10E-11DC-B99B-0019D1879648", N_("NetBSD RAID")), |
| |
| /* ChromeOS */ |
| DEF_GUID("FE3A2A5D-4F32-41A7-B725-ACCC3285A309", N_("ChromeOS kernel")), |
| DEF_GUID("3CB8E202-3B7E-47DD-8A3C-7FF2A13CFCEC", N_("ChromeOS root fs")), |
| DEF_GUID("2E0A753D-9E48-43B0-8337-B15192CB1B5E", N_("ChromeOS reserved")), |
| |
| /* MidnightBSD */ |
| DEF_GUID("85D5E45A-237C-11E1-B4B3-E89A8F7FC3A7", N_("MidnightBSD data")), |
| DEF_GUID("85D5E45E-237C-11E1-B4B3-E89A8F7FC3A7", N_("MidnightBSD boot")), |
| DEF_GUID("85D5E45B-237C-11E1-B4B3-E89A8F7FC3A7", N_("MidnightBSD swap")), |
| DEF_GUID("0394EF8B-237E-11E1-B4B3-E89A8F7FC3A7", N_("MidnightBSD UFS")), |
| DEF_GUID("85D5E45D-237C-11E1-B4B3-E89A8F7FC3A7", N_("MidnightBSD ZFS")), |
| DEF_GUID("85D5E45C-237C-11E1-B4B3-E89A8F7FC3A7", N_("MidnightBSD Vinum")), |
| |
| /* Ceph */ |
| DEF_GUID("45B0969E-9B03-4F30-B4C6-B4B80CEFF106", N_("Ceph Journal")), |
| DEF_GUID("45B0969E-9B03-4F30-B4C6-5EC00CEFF106", N_("Ceph Encrypted Journal")), |
| DEF_GUID("4FBD7E29-9D25-41B8-AFD0-062C0CEFF05D", N_("Ceph OSD")), |
| DEF_GUID("4FBD7E29-9D25-41B8-AFD0-5EC00CEFF05D", N_("Ceph crypt OSD")), |
| DEF_GUID("89C57F98-2FE5-4DC0-89C1-F3AD0CEFF2BE", N_("Ceph disk in creation")), |
| DEF_GUID("89C57F98-2FE5-4DC0-89C1-5EC00CEFF2BE", N_("Ceph crypt disk in creation")), |
| |
| /* VMware */ |
| DEF_GUID("AA31E02A-400F-11DB-9590-000C2911D1B8", N_("VMware VMFS")), |
| DEF_GUID("9D275380-40AD-11DB-BF97-000C2911D1B8", N_("VMware Diagnostic")), |
| DEF_GUID("381CFCCC-7288-11E0-92EE-000C2911D0B2", N_("VMware Virtual SAN")), |
| DEF_GUID("77719A0C-A4A0-11E3-A47E-000C29745A24", N_("VMware Virsto")), |
| DEF_GUID("9198EFFC-31C0-11DB-8F78-000C2911D1B8", N_("VMware Reserved")), |
| |
| /* OpenBSD */ |
| DEF_GUID("824CC7A0-36A8-11E3-890A-952519AD3F61", N_("OpenBSD data")), |
| |
| /* QNX */ |
| DEF_GUID("CEF5A9AD-73BC-4601-89F3-CDEEEEE321A1", N_("QNX6 file system")), |
| |
| /* Plan 9 */ |
| DEF_GUID("C91818F9-8025-47AF-89D2-F030D7000C2C", N_("Plan 9 partition")) |
| }; |
| |
| #define alignment_required(_x) ((_x)->grain != (_x)->sector_size) |
| |
| /* gpt_entry macros */ |
| #define gpt_partition_start(_e) le64_to_cpu((_e)->lba_start) |
| #define gpt_partition_end(_e) le64_to_cpu((_e)->lba_end) |
| |
| /* |
| * in-memory fdisk GPT stuff |
| */ |
| struct fdisk_gpt_label { |
| struct fdisk_label head; /* generic part */ |
| |
| /* gpt specific part */ |
| struct gpt_header *pheader; /* primary header */ |
| struct gpt_header *bheader; /* backup header */ |
| |
| unsigned char *ents; /* entries (partitions) */ |
| }; |
| |
| static void gpt_deinit(struct fdisk_label *lb); |
| |
| static inline struct fdisk_gpt_label *self_label(struct fdisk_context *cxt) |
| { |
| return (struct fdisk_gpt_label *) cxt->label; |
| } |
| |
| /* |
| * Returns the partition length, or 0 if end is before beginning. |
| */ |
| static uint64_t gpt_partition_size(const struct gpt_entry *e) |
| { |
| uint64_t start = gpt_partition_start(e); |
| uint64_t end = gpt_partition_end(e); |
| |
| return start > end ? 0 : end - start + 1ULL; |
| } |
| |
| /* prints UUID in the real byte order! */ |
| static void gpt_debug_uuid(const char *mesg, struct gpt_guid *guid) |
| { |
| const unsigned char *uuid = (unsigned char *) guid; |
| |
| fprintf(stderr, "%s: " |
| "%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x\n", |
| mesg, |
| uuid[0], uuid[1], uuid[2], uuid[3], |
| uuid[4], uuid[5], |
| uuid[6], uuid[7], |
| uuid[8], uuid[9], |
| uuid[10], uuid[11], uuid[12], uuid[13], uuid[14],uuid[15]); |
| } |
| |
| /* |
| * UUID is traditionally 16 byte big-endian array, except Intel EFI |
| * specification where the UUID is a structure of little-endian fields. |
| */ |
| static void swap_efi_guid(struct gpt_guid *uid) |
| { |
| uid->time_low = swab32(uid->time_low); |
| uid->time_mid = swab16(uid->time_mid); |
| uid->time_hi_and_version = swab16(uid->time_hi_and_version); |
| } |
| |
| static int string_to_guid(const char *in, struct gpt_guid *guid) |
| { |
| if (uuid_parse(in, (unsigned char *) guid)) { /* BE */ |
| DBG(LABEL, ul_debug("GPT: failed to parse GUID: %s", in)); |
| return -EINVAL; |
| } |
| swap_efi_guid(guid); /* LE */ |
| return 0; |
| } |
| |
| static char *guid_to_string(const struct gpt_guid *guid, char *out) |
| { |
| struct gpt_guid u = *guid; /* LE */ |
| |
| swap_efi_guid(&u); /* BE */ |
| uuid_unparse_upper((unsigned char *) &u, out); |
| |
| return out; |
| } |
| |
| static struct fdisk_parttype *gpt_partition_parttype( |
| struct fdisk_context *cxt, |
| const struct gpt_entry *e) |
| { |
| struct fdisk_parttype *t; |
| char str[UUID_STR_LEN]; |
| struct gpt_guid guid = e->type; |
| |
| guid_to_string(&guid, str); |
| t = fdisk_label_get_parttype_from_string(cxt->label, str); |
| return t ? : fdisk_new_unknown_parttype(0, str); |
| } |
| |
| static void gpt_entry_set_type(struct gpt_entry *e, struct gpt_guid *uuid) |
| { |
| e->type = *uuid; |
| DBG(LABEL, gpt_debug_uuid("new type", uuid)); |
| } |
| |
| static int gpt_entry_set_name(struct gpt_entry *e, char *str) |
| { |
| uint16_t name[GPT_PART_NAME_LEN] = { 0 }; |
| size_t i, mblen = 0; |
| uint8_t *in = (uint8_t *) str; |
| |
| for (i = 0; *in && i < GPT_PART_NAME_LEN; in++) { |
| if (!mblen) { |
| if (!(*in & 0x80)) { |
| name[i++] = *in; |
| } else if ((*in & 0xE0) == 0xC0) { |
| mblen = 1; |
| name[i] = (uint16_t)(*in & 0x1F) << (mblen *6); |
| } else if ((*in & 0xF0) == 0xE0) { |
| mblen = 2; |
| name[i] = (uint16_t)(*in & 0x0F) << (mblen *6); |
| } else { |
| /* broken UTF-8 or code point greater than U+FFFF */ |
| return -EILSEQ; |
| } |
| } else { |
| /* incomplete UTF-8 sequence */ |
| if ((*in & 0xC0) != 0x80) |
| return -EILSEQ; |
| |
| name[i] |= (uint16_t)(*in & 0x3F) << (--mblen *6); |
| if (!mblen) { |
| /* check for code points reserved for surrogate pairs*/ |
| if ((name[i] & 0xF800) == 0xD800) |
| return -EILSEQ; |
| i++; |
| } |
| } |
| } |
| |
| for (i = 0; i < GPT_PART_NAME_LEN; i++) |
| e->name[i] = cpu_to_le16(name[i]); |
| |
| return (int)((char *) in - str); |
| } |
| |
| static int gpt_entry_set_uuid(struct gpt_entry *e, char *str) |
| { |
| struct gpt_guid uuid; |
| int rc; |
| |
| rc = string_to_guid(str, &uuid); |
| if (rc) |
| return rc; |
| |
| e->partition_guid = uuid; |
| return 0; |
| } |
| |
| static inline int gpt_entry_is_used(const struct gpt_entry *e) |
| { |
| return memcmp(&e->type, &GPT_UNUSED_ENTRY_GUID, |
| sizeof(struct gpt_guid)) != 0; |
| } |
| |
| |
| static const char *gpt_get_header_revstr(struct gpt_header *header) |
| { |
| if (!header) |
| goto unknown; |
| |
| switch (le32_to_cpu(header->revision)) { |
| case GPT_HEADER_REVISION_V1_02: |
| return "1.2"; |
| case GPT_HEADER_REVISION_V1_00: |
| return "1.0"; |
| case GPT_HEADER_REVISION_V0_99: |
| return "0.99"; |
| default: |
| goto unknown; |
| } |
| |
| unknown: |
| return "unknown"; |
| } |
| |
| static inline unsigned char *gpt_get_entry_ptr(struct fdisk_gpt_label *gpt, size_t i) |
| { |
| return gpt->ents + le32_to_cpu(gpt->pheader->sizeof_partition_entry) * i; |
| } |
| |
| static inline struct gpt_entry *gpt_get_entry(struct fdisk_gpt_label *gpt, size_t i) |
| { |
| return (struct gpt_entry *) gpt_get_entry_ptr(gpt, i); |
| } |
| |
| static inline struct gpt_entry *gpt_zeroize_entry(struct fdisk_gpt_label *gpt, size_t i) |
| { |
| return (struct gpt_entry *) memset(gpt_get_entry_ptr(gpt, i), |
| 0, le32_to_cpu(gpt->pheader->sizeof_partition_entry)); |
| } |
| |
| /* Use to access array of entries, for() loops, etc. But don't use when |
| * you directly do something with GPT header, then use uint32_t. |
| */ |
| static inline size_t gpt_get_nentries(struct fdisk_gpt_label *gpt) |
| { |
| return (size_t) le32_to_cpu(gpt->pheader->npartition_entries); |
| } |
| |
| static inline int gpt_calculate_sizeof_ents(struct gpt_header *hdr, uint32_t nents, size_t *sz) |
| { |
| uint32_t esz = le32_to_cpu(hdr->sizeof_partition_entry); |
| |
| if (nents == 0 || esz == 0 || SIZE_MAX/esz < nents) { |
| DBG(LABEL, ul_debug("GPT entreis array size check failed")); |
| return -ERANGE; |
| } |
| |
| *sz = nents * esz; |
| return 0; |
| } |
| |
| static inline int gpt_sizeof_ents(struct gpt_header *hdr, size_t *sz) |
| { |
| return gpt_calculate_sizeof_ents(hdr, le32_to_cpu(hdr->npartition_entries), sz); |
| } |
| |
| |
| static char *gpt_get_header_id(struct gpt_header *header) |
| { |
| char str[UUID_STR_LEN]; |
| struct gpt_guid guid = header->disk_guid; |
| |
| guid_to_string(&guid, str); |
| |
| return strdup(str); |
| } |
| |
| /* |
| * Builds a clean new valid protective MBR - will wipe out any existing data. |
| * Returns 0 on success, otherwise < 0 on error. |
| */ |
| static int gpt_mknew_pmbr(struct fdisk_context *cxt) |
| { |
| struct gpt_legacy_mbr *pmbr = NULL; |
| int rc; |
| |
| if (!cxt || !cxt->firstsector) |
| return -ENOSYS; |
| |
| if (fdisk_has_protected_bootbits(cxt)) |
| rc = fdisk_init_firstsector_buffer(cxt, 0, MBR_PT_BOOTBITS_SIZE); |
| else |
| rc = fdisk_init_firstsector_buffer(cxt, 0, 0); |
| if (rc) |
| return rc; |
| |
| pmbr = (struct gpt_legacy_mbr *) cxt->firstsector; |
| memset(pmbr->partition_record, 0, sizeof(pmbr->partition_record)); |
| |
| pmbr->signature = cpu_to_le16(MSDOS_MBR_SIGNATURE); |
| pmbr->partition_record[0].os_type = EFI_PMBR_OSTYPE; |
| pmbr->partition_record[0].start_sector = 2; |
| pmbr->partition_record[0].end_head = 0xFF; |
| pmbr->partition_record[0].end_sector = 0xFF; |
| pmbr->partition_record[0].end_track = 0xFF; |
| pmbr->partition_record[0].starting_lba = cpu_to_le32(1); |
| pmbr->partition_record[0].size_in_lba = |
| cpu_to_le32((uint32_t) min( cxt->total_sectors - 1ULL, 0xFFFFFFFFULL) ); |
| |
| return 0; |
| } |
| |
| /* Move backup header to the end of the device */ |
| static void gpt_fix_alternative_lba(struct fdisk_context *cxt, struct fdisk_gpt_label *gpt) |
| { |
| struct gpt_header *p, *b; |
| uint64_t esz, esects, last; |
| |
| if (!cxt) |
| return; |
| |
| p = gpt->pheader; /* primary */ |
| b = gpt->bheader; /* backup */ |
| |
| /* count size of partitions array */ |
| esz = (uint64_t) le32_to_cpu(p->npartition_entries) * sizeof(struct gpt_entry); |
| esects = (esz + cxt->sector_size - 1) / cxt->sector_size; |
| |
| /* reference from primary to backup */ |
| p->alternative_lba = cpu_to_le64(cxt->total_sectors - 1ULL); |
| |
| /* reference from backup to primary */ |
| b->alternative_lba = p->my_lba; |
| b->my_lba = p->alternative_lba; |
| |
| /* fix backup partitions array address */ |
| b->partition_entry_lba = cpu_to_le64(cxt->total_sectors - 1ULL - esects); |
| |
| /* update last usable LBA */ |
| last = cxt->total_sectors - 2ULL - esects; |
| p->last_usable_lba = cpu_to_le64(last); |
| b->last_usable_lba = cpu_to_le64(last); |
| |
| DBG(LABEL, ul_debug("Alternative-LBA updated to: %"PRIu64, le64_to_cpu(p->alternative_lba))); |
| } |
| |
| /* some universal differences between the headers */ |
| static void gpt_mknew_header_common(struct fdisk_context *cxt, |
| struct gpt_header *header, uint64_t lba) |
| { |
| if (!cxt || !header) |
| return; |
| |
| header->my_lba = cpu_to_le64(lba); |
| |
| if (lba == GPT_PRIMARY_PARTITION_TABLE_LBA) { /* primary */ |
| header->alternative_lba = cpu_to_le64(cxt->total_sectors - 1ULL); |
| header->partition_entry_lba = cpu_to_le64(2ULL); |
| } else { /* backup */ |
| uint64_t esz = (uint64_t) le32_to_cpu(header->npartition_entries) |
| * sizeof(struct gpt_entry); |
| uint64_t esects = (esz + cxt->sector_size - 1) / cxt->sector_size; |
| |
| header->alternative_lba = cpu_to_le64(GPT_PRIMARY_PARTITION_TABLE_LBA); |
| header->partition_entry_lba = cpu_to_le64(cxt->total_sectors - 1ULL - esects); |
| } |
| } |
| |
| /* |
| * Builds a new GPT header (at sector lba) from a backup header2. |
| * If building a primary header, then backup is the secondary, and vice versa. |
| * |
| * Always pass a new (zeroized) header to build upon as we don't |
| * explicitly zero-set some values such as CRCs and reserved. |
| * |
| * Returns 0 on success, otherwise < 0 on error. |
| */ |
| static int gpt_mknew_header_from_bkp(struct fdisk_context *cxt, |
| struct gpt_header *header, |
| uint64_t lba, |
| struct gpt_header *header2) |
| { |
| if (!cxt || !header || !header2) |
| return -ENOSYS; |
| |
| header->signature = header2->signature; |
| header->revision = header2->revision; |
| header->size = header2->size; |
| header->npartition_entries = header2->npartition_entries; |
| header->sizeof_partition_entry = header2->sizeof_partition_entry; |
| header->first_usable_lba = header2->first_usable_lba; |
| header->last_usable_lba = header2->last_usable_lba; |
| |
| memcpy(&header->disk_guid, |
| &header2->disk_guid, sizeof(header2->disk_guid)); |
| gpt_mknew_header_common(cxt, header, lba); |
| |
| return 0; |
| } |
| |
| static struct gpt_header *gpt_copy_header(struct fdisk_context *cxt, |
| struct gpt_header *src) |
| { |
| struct gpt_header *res; |
| |
| if (!cxt || !src) |
| return NULL; |
| |
| assert(cxt->sector_size >= sizeof(struct gpt_header)); |
| |
| res = calloc(1, cxt->sector_size); |
| if (!res) { |
| fdisk_warn(cxt, _("failed to allocate GPT header")); |
| return NULL; |
| } |
| |
| res->my_lba = src->alternative_lba; |
| res->alternative_lba = src->my_lba; |
| |
| res->signature = src->signature; |
| res->revision = src->revision; |
| res->size = src->size; |
| res->npartition_entries = src->npartition_entries; |
| res->sizeof_partition_entry = src->sizeof_partition_entry; |
| res->first_usable_lba = src->first_usable_lba; |
| res->last_usable_lba = src->last_usable_lba; |
| |
| memcpy(&res->disk_guid, &src->disk_guid, sizeof(src->disk_guid)); |
| |
| |
| if (res->my_lba == GPT_PRIMARY_PARTITION_TABLE_LBA) |
| res->partition_entry_lba = cpu_to_le64(2ULL); |
| else { |
| uint64_t esz = (uint64_t) le32_to_cpu(src->npartition_entries) * sizeof(struct gpt_entry); |
| uint64_t esects = (esz + cxt->sector_size - 1) / cxt->sector_size; |
| |
| res->partition_entry_lba = cpu_to_le64(cxt->total_sectors - 1ULL - esects); |
| } |
| |
| return res; |
| } |
| |
| static int get_script_u64(struct fdisk_context *cxt, uint64_t *num, const char *name) |
| { |
| const char *str; |
| int pwr = 0, rc = 0; |
| |
| assert(cxt); |
| |
| *num = 0; |
| |
| if (!cxt->script) |
| return 1; |
| |
| str = fdisk_script_get_header(cxt->script, name); |
| if (!str) |
| return 1; |
| |
| rc = parse_size(str, (uintmax_t *) num, &pwr); |
| if (rc < 0) |
| return rc; |
| if (pwr) |
| *num /= cxt->sector_size; |
| return 0; |
| } |
| |
| static int count_first_last_lba(struct fdisk_context *cxt, |
| uint64_t *first, uint64_t *last) |
| { |
| int rc = 0; |
| uint64_t flba, llba; |
| |
| uint64_t esz = 0; |
| |
| assert(cxt); |
| assert(first); |
| assert(last); |
| |
| *first = *last = 0; |
| |
| /* UEFI default */ |
| esz = sizeof(struct gpt_entry) * GPT_NPARTITIONS / cxt->sector_size; |
| llba = cxt->total_sectors - 2ULL - esz; |
| flba = esz + 2ULL; |
| |
| /* script default */ |
| if (cxt->script) { |
| rc = get_script_u64(cxt, first, "first-lba"); |
| if (rc < 0) |
| return rc; |
| |
| DBG(LABEL, ul_debug("FirstLBA: script=%"PRIu64", uefi=%"PRIu64", topology=%ju.", |
| *first, flba, (uintmax_t)cxt->first_lba)); |
| |
| if (rc == 0 && (*first < flba || *first > llba)) { |
| fdisk_warnx(cxt, _("First LBA specified by script is out of range.")); |
| return -ERANGE; |
| } |
| |
| rc = get_script_u64(cxt, last, "last-lba"); |
| if (rc < 0) |
| return rc; |
| |
| DBG(LABEL, ul_debug("LastLBA: script=%"PRIu64", uefi=%"PRIu64", topology=%ju.", |
| *last, llba, (uintmax_t)cxt->last_lba)); |
| |
| if (rc == 0 && (*last > llba || *last < flba)) { |
| fdisk_warnx(cxt, _("Last LBA specified by script is out of range.")); |
| return -ERANGE; |
| } |
| } |
| |
| if (!*last) |
| *last = llba; |
| |
| /* default by topology */ |
| if (!*first) |
| *first = flba < cxt->first_lba && |
| cxt->first_lba < *last ? cxt->first_lba : flba; |
| return 0; |
| } |
| |
| /* |
| * Builds a clean new GPT header (currently under revision 1.0). |
| * |
| * Always pass a new (zeroized) header to build upon as we don't |
| * explicitly zero-set some values such as CRCs and reserved. |
| * |
| * Returns 0 on success, otherwise < 0 on error. |
| */ |
| static int gpt_mknew_header(struct fdisk_context *cxt, |
| struct gpt_header *header, uint64_t lba) |
| { |
| uint64_t first, last; |
| int has_id = 0, rc; |
| |
| if (!cxt || !header) |
| return -ENOSYS; |
| |
| header->signature = cpu_to_le64(GPT_HEADER_SIGNATURE); |
| header->revision = cpu_to_le32(GPT_HEADER_REVISION_V1_00); |
| |
| /* According to EFI standard it's valid to count all the first |
| * sector into header size, but some tools may have a problem |
| * to accept it, so use the header without the zeroed area. |
| * This does not have any impact to CRC, etc. --kzak Jan-2015 |
| */ |
| header->size = cpu_to_le32(sizeof(struct gpt_header) |
| - sizeof(header->reserved2)); |
| |
| /* |
| * 128 partitions are the default. It can go beyond that, but |
| * we're creating a de facto header here, so no funny business. |
| */ |
| header->npartition_entries = cpu_to_le32(GPT_NPARTITIONS); |
| header->sizeof_partition_entry = cpu_to_le32(sizeof(struct gpt_entry)); |
| |
| rc = count_first_last_lba(cxt, &first, &last); |
| if (rc) |
| return rc; |
| |
| header->first_usable_lba = cpu_to_le64(first); |
| header->last_usable_lba = cpu_to_le64(last); |
| |
| gpt_mknew_header_common(cxt, header, lba); |
| |
| if (cxt->script) { |
| const char *id = fdisk_script_get_header(cxt->script, "label-id"); |
| struct gpt_guid guid = header->disk_guid; |
| if (id && string_to_guid(id, &guid) == 0) |
| has_id = 1; |
| header->disk_guid = guid; |
| } |
| |
| if (!has_id) { |
| struct gpt_guid guid; |
| |
| uuid_generate_random((unsigned char *) &header->disk_guid); |
| guid = header->disk_guid; |
| swap_efi_guid(&guid); |
| } |
| return 0; |
| } |
| |
| /* |
| * Checks if there is a valid protective MBR partition table. |
| * Returns 0 if it is invalid or failure. Otherwise, return |
| * GPT_MBR_PROTECTIVE or GPT_MBR_HYBRID, depending on the detection. |
| */ |
| static int valid_pmbr(struct fdisk_context *cxt) |
| { |
| int i, part = 0, ret = 0; /* invalid by default */ |
| struct gpt_legacy_mbr *pmbr = NULL; |
| |
| if (!cxt->firstsector) |
| goto done; |
| |
| pmbr = (struct gpt_legacy_mbr *) cxt->firstsector; |
| |
| if (le16_to_cpu(pmbr->signature) != MSDOS_MBR_SIGNATURE) |
| goto done; |
| |
| /* seems like a valid MBR was found, check DOS primary partitions */ |
| for (i = 0; i < 4; i++) { |
| if (pmbr->partition_record[i].os_type == EFI_PMBR_OSTYPE) { |
| /* |
| * Ok, we at least know that there's a protective MBR, |
| * now check if there are other partition types for |
| * hybrid MBR. |
| */ |
| part = i; |
| ret = GPT_MBR_PROTECTIVE; |
| break; |
| } |
| } |
| |
| if (ret != GPT_MBR_PROTECTIVE) |
| goto done; |
| |
| /* LBA of the GPT partition header */ |
| if (pmbr->partition_record[part].starting_lba != |
| cpu_to_le32(GPT_PRIMARY_PARTITION_TABLE_LBA)) |
| goto done; |
| |
| for (i = 0 ; i < 4; i++) { |
| if ((pmbr->partition_record[i].os_type != EFI_PMBR_OSTYPE) && |
| (pmbr->partition_record[i].os_type != 0x00)) |
| ret = GPT_MBR_HYBRID; |
| } |
| |
| /* |
| * Protective MBRs take up the lesser of the whole disk |
| * or 2 TiB (32bit LBA), ignoring the rest of the disk. |
| * Some partitioning programs, nonetheless, choose to set |
| * the size to the maximum 32-bit limitation, disregarding |
| * the disk size. |
| * |
| * Hybrid MBRs do not necessarily comply with this. |
| * |
| * Consider a bad value here to be a warning to support dd-ing |
| * an image from a smaller disk to a bigger disk. |
| */ |
| if (ret == GPT_MBR_PROTECTIVE) { |
| uint64_t sz_lba = (uint64_t) le32_to_cpu(pmbr->partition_record[part].size_in_lba); |
| if (sz_lba != cxt->total_sectors - 1ULL && sz_lba != 0xFFFFFFFFULL) { |
| |
| fdisk_warnx(cxt, _("GPT PMBR size mismatch (%"PRIu64" != %"PRIu64") " |
| "will be corrected by write."), |
| sz_lba, cxt->total_sectors - 1ULL); |
| |
| /* Note that gpt_write_pmbr() overwrites PMBR, but we want to keep it valid already |
| * in memory too to disable warnings when valid_pmbr() called next time */ |
| pmbr->partition_record[part].size_in_lba = |
| cpu_to_le32((uint32_t) min( cxt->total_sectors - 1ULL, 0xFFFFFFFFULL) ); |
| fdisk_label_set_changed(cxt->label, 1); |
| } |
| } |
| done: |
| return ret; |
| } |
| |
| static uint64_t last_lba(struct fdisk_context *cxt) |
| { |
| struct stat s; |
| uint64_t sectors = 0; |
| |
| memset(&s, 0, sizeof(s)); |
| if (fstat(cxt->dev_fd, &s) == -1) { |
| fdisk_warn(cxt, _("gpt: stat() failed")); |
| return 0; |
| } |
| |
| if (S_ISBLK(s.st_mode)) |
| sectors = cxt->total_sectors - 1ULL; |
| else if (S_ISREG(s.st_mode)) |
| sectors = ((uint64_t) s.st_size / |
| (uint64_t) cxt->sector_size) - 1ULL; |
| else |
| fdisk_warnx(cxt, _("gpt: cannot handle files with mode %o"), s.st_mode); |
| |
| DBG(LABEL, ul_debug("GPT last LBA: %"PRIu64"", sectors)); |
| return sectors; |
| } |
| |
| static ssize_t read_lba(struct fdisk_context *cxt, uint64_t lba, |
| void *buffer, const size_t bytes) |
| { |
| off_t offset = lba * cxt->sector_size; |
| |
| if (lseek(cxt->dev_fd, offset, SEEK_SET) == (off_t) -1) |
| return -1; |
| return (size_t)read(cxt->dev_fd, buffer, bytes) != bytes; |
| } |
| |
| |
| /* Returns the GPT entry array */ |
| static unsigned char *gpt_read_entries(struct fdisk_context *cxt, |
| struct gpt_header *header) |
| { |
| size_t sz = 0; |
| ssize_t ssz; |
| |
| unsigned char *ret = NULL; |
| off_t offset; |
| |
| assert(cxt); |
| assert(header); |
| |
| if (gpt_sizeof_ents(header, &sz)) |
| return NULL; |
| |
| if (sz > (size_t) SSIZE_MAX) { |
| DBG(LABEL, ul_debug("GPT entries array too large to read()")); |
| return NULL; |
| } |
| |
| ret = calloc(1, sz); |
| if (!ret) |
| return NULL; |
| |
| offset = (off_t) le64_to_cpu(header->partition_entry_lba) * |
| cxt->sector_size; |
| |
| if (offset != lseek(cxt->dev_fd, offset, SEEK_SET)) |
| goto fail; |
| |
| ssz = read(cxt->dev_fd, ret, sz); |
| if (ssz < 0 || (size_t) ssz != sz) |
| goto fail; |
| |
| return ret; |
| |
| fail: |
| free(ret); |
| return NULL; |
| } |
| |
| static inline uint32_t count_crc32(const unsigned char *buf, size_t len, |
| size_t ex_off, size_t ex_len) |
| { |
| return (ul_crc32_exclude_offset(~0L, buf, len, ex_off, ex_len) ^ ~0L); |
| } |
| |
| static inline uint32_t gpt_header_count_crc32(struct gpt_header *header) |
| { |
| return count_crc32((unsigned char *) header, /* buffer */ |
| le32_to_cpu(header->size), /* size of buffer */ |
| offsetof(struct gpt_header, crc32), /* exclude */ |
| sizeof(header->crc32)); /* size of excluded area */ |
| } |
| |
| static inline uint32_t gpt_entryarr_count_crc32(struct gpt_header *header, unsigned char *ents) |
| { |
| size_t arysz = 0; |
| |
| if (gpt_sizeof_ents(header, &arysz)) |
| return 0; |
| |
| return count_crc32(ents, arysz, 0, 0); |
| } |
| |
| |
| /* |
| * Recompute header and partition array 32bit CRC checksums. |
| * This function does not fail - if there's corruption, then it |
| * will be reported when checksumming it again (ie: probing or verify). |
| */ |
| static void gpt_recompute_crc(struct gpt_header *header, unsigned char *ents) |
| { |
| if (!header) |
| return; |
| |
| header->partition_entry_array_crc32 = |
| cpu_to_le32( gpt_entryarr_count_crc32(header, ents) ); |
| |
| header->crc32 = cpu_to_le32( gpt_header_count_crc32(header) ); |
| } |
| |
| /* |
| * Compute the 32bit CRC checksum of the partition table header. |
| * Returns 1 if it is valid, otherwise 0. |
| */ |
| static int gpt_check_header_crc(struct gpt_header *header, unsigned char *ents) |
| { |
| uint32_t orgcrc = le32_to_cpu(header->crc32), |
| crc = gpt_header_count_crc32(header); |
| |
| if (crc == orgcrc) |
| return 1; |
| |
| /* |
| * If we have checksum mismatch it may be due to stale data, like a |
| * partition being added or deleted. Recompute the CRC again and make |
| * sure this is not the case. |
| */ |
| if (ents) { |
| gpt_recompute_crc(header, ents); |
| return gpt_header_count_crc32(header) == orgcrc; |
| } |
| |
| return 0; |
| } |
| |
| /* |
| * It initializes the partition entry array. |
| * Returns 1 if the checksum is valid, otherwise 0. |
| */ |
| static int gpt_check_entryarr_crc(struct gpt_header *header, unsigned char *ents) |
| { |
| if (!header || !ents) |
| return 0; |
| |
| return gpt_entryarr_count_crc32(header, ents) == |
| le32_to_cpu(header->partition_entry_array_crc32); |
| } |
| |
| static int gpt_check_lba_sanity(struct fdisk_context *cxt, struct gpt_header *header) |
| { |
| int ret = 0; |
| uint64_t lu, fu, lastlba = last_lba(cxt); |
| |
| fu = le64_to_cpu(header->first_usable_lba); |
| lu = le64_to_cpu(header->last_usable_lba); |
| |
| /* check if first and last usable LBA make sense */ |
| if (lu < fu) { |
| DBG(LABEL, ul_debug("error: header last LBA is before first LBA")); |
| goto done; |
| } |
| |
| /* check if first and last usable LBAs with the disk's last LBA */ |
| if (fu > lastlba || lu > lastlba) { |
| DBG(LABEL, ul_debug("error: header LBAs are after the disk's last LBA")); |
| goto done; |
| } |
| |
| /* the header has to be outside usable range */ |
| if (fu < GPT_PRIMARY_PARTITION_TABLE_LBA && |
| GPT_PRIMARY_PARTITION_TABLE_LBA < lu) { |
| DBG(LABEL, ul_debug("error: header outside of usable range")); |
| goto done; |
| } |
| |
| ret = 1; /* sane */ |
| done: |
| return ret; |
| } |
| |
| /* Check if there is a valid header signature */ |
| static int gpt_check_signature(struct gpt_header *header) |
| { |
| return header->signature == cpu_to_le64(GPT_HEADER_SIGNATURE); |
| } |
| |
| /* |
| * Return the specified GPT Header, or NULL upon failure/invalid. |
| * Note that all tests must pass to ensure a valid header, |
| * we do not rely on only testing the signature for a valid probe. |
| */ |
| static struct gpt_header *gpt_read_header(struct fdisk_context *cxt, |
| uint64_t lba, |
| unsigned char **_ents) |
| { |
| struct gpt_header *header = NULL; |
| unsigned char *ents = NULL; |
| uint32_t hsz; |
| |
| if (!cxt) |
| return NULL; |
| |
| /* always allocate all sector, the area after GPT header |
| * has to be fill by zeros */ |
| assert(cxt->sector_size >= sizeof(struct gpt_header)); |
| |
| header = calloc(1, cxt->sector_size); |
| if (!header) |
| return NULL; |
| |
| /* read and verify header */ |
| if (read_lba(cxt, lba, header, cxt->sector_size) != 0) |
| goto invalid; |
| |
| if (!gpt_check_signature(header)) |
| goto invalid; |
| |
| /* make sure header size is between 92 and sector size bytes */ |
| hsz = le32_to_cpu(header->size); |
| if (hsz < GPT_HEADER_MINSZ || hsz > cxt->sector_size) |
| goto invalid; |
| |
| if (!gpt_check_header_crc(header, NULL)) |
| goto invalid; |
| |
| /* read and verify entries */ |
| ents = gpt_read_entries(cxt, header); |
| if (!ents) |
| goto invalid; |
| |
| if (!gpt_check_entryarr_crc(header, ents)) |
| goto invalid; |
| |
| if (!gpt_check_lba_sanity(cxt, header)) |
| goto invalid; |
| |
| /* valid header must be at MyLBA */ |
| if (le64_to_cpu(header->my_lba) != lba) |
| goto invalid; |
| |
| if (_ents) |
| *_ents = ents; |
| else |
| free(ents); |
| |
| DBG(LABEL, ul_debug("found valid GPT Header on LBA %"PRIu64"", lba)); |
| return header; |
| invalid: |
| free(header); |
| free(ents); |
| |
| DBG(LABEL, ul_debug("read GPT Header on LBA %"PRIu64" failed", lba)); |
| return NULL; |
| } |
| |
| |
| static int gpt_locate_disklabel(struct fdisk_context *cxt, int n, |
| const char **name, uint64_t *offset, size_t *size) |
| { |
| struct fdisk_gpt_label *gpt; |
| |
| assert(cxt); |
| |
| *name = NULL; |
| *offset = 0; |
| *size = 0; |
| |
| switch (n) { |
| case 0: |
| *name = "PMBR"; |
| *offset = 0; |
| *size = 512; |
| break; |
| case 1: |
| *name = _("GPT Header"); |
| *offset = (uint64_t) GPT_PRIMARY_PARTITION_TABLE_LBA * cxt->sector_size; |
| *size = sizeof(struct gpt_header); |
| break; |
| case 2: |
| *name = _("GPT Entries"); |
| gpt = self_label(cxt); |
| *offset = (uint64_t) le64_to_cpu(gpt->pheader->partition_entry_lba) * |
| cxt->sector_size; |
| return gpt_sizeof_ents(gpt->pheader, size); |
| default: |
| return 1; /* no more chunks */ |
| } |
| |
| return 0; |
| } |
| |
| static int gpt_get_disklabel_item(struct fdisk_context *cxt, struct fdisk_labelitem *item) |
| { |
| struct gpt_header *h; |
| int rc = 0; |
| |
| assert(cxt); |
| assert(cxt->label); |
| assert(fdisk_is_label(cxt, GPT)); |
| |
| h = self_label(cxt)->pheader; |
| |
| switch (item->id) { |
| case GPT_LABELITEM_ID: |
| item->name = _("Disk identifier"); |
| item->type = 's'; |
| item->data.str = gpt_get_header_id(h); |
| if (!item->data.str) |
| rc = -ENOMEM; |
| break; |
| case GPT_LABELITEM_FIRSTLBA: |
| item->name = _("First LBA"); |
| item->type = 'j'; |
| item->data.num64 = le64_to_cpu(h->first_usable_lba); |
| break; |
| case GPT_LABELITEM_LASTLBA: |
| item->name = _("Last LBA"); |
| item->type = 'j'; |
| item->data.num64 = le64_to_cpu(h->last_usable_lba); |
| break; |
| case GPT_LABELITEM_ALTLBA: |
| /* TRANSLATORS: The LBA (Logical Block Address) of the backup GPT header. */ |
| item->name = _("Alternative LBA"); |
| item->type = 'j'; |
| item->data.num64 = le64_to_cpu(h->alternative_lba); |
| break; |
| case GPT_LABELITEM_ENTRIESLBA: |
| /* TRANSLATORS: The start of the array of partition entries. */ |
| item->name = _("Partition entries LBA"); |
| item->type = 'j'; |
| item->data.num64 = le64_to_cpu(h->partition_entry_lba); |
| break; |
| case GPT_LABELITEM_ENTRIESALLOC: |
| item->name = _("Allocated partition entries"); |
| item->type = 'j'; |
| item->data.num64 = le32_to_cpu(h->npartition_entries); |
| break; |
| default: |
| if (item->id < __FDISK_NLABELITEMS) |
| rc = 1; /* unsupported generic item */ |
| else |
| rc = 2; /* out of range */ |
| break; |
| } |
| |
| return rc; |
| } |
| |
| /* |
| * Returns the number of partitions that are in use. |
| */ |
| static size_t partitions_in_use(struct fdisk_gpt_label *gpt) |
| { |
| size_t i, used = 0; |
| |
| assert(gpt); |
| assert(gpt->pheader); |
| assert(gpt->ents); |
| |
| for (i = 0; i < gpt_get_nentries(gpt); i++) { |
| struct gpt_entry *e = gpt_get_entry(gpt, i); |
| |
| if (gpt_entry_is_used(e)) |
| used++; |
| } |
| return used; |
| } |
| |
| |
| /* |
| * Check if a partition is too big for the disk (sectors). |
| * Returns the faulting partition number, otherwise 0. |
| */ |
| static uint32_t check_too_big_partitions(struct fdisk_gpt_label *gpt, uint64_t sectors) |
| { |
| size_t i; |
| |
| assert(gpt); |
| assert(gpt->pheader); |
| assert(gpt->ents); |
| |
| for (i = 0; i < gpt_get_nentries(gpt); i++) { |
| struct gpt_entry *e = gpt_get_entry(gpt, i); |
| |
| if (!gpt_entry_is_used(e)) |
| continue; |
| if (gpt_partition_end(e) >= sectors) |
| return i + 1; |
| } |
| |
| return 0; |
| } |
| |
| /* |
| * Check if a partition ends before it begins |
| * Returns the faulting partition number, otherwise 0. |
| */ |
| static uint32_t check_start_after_end_partitions(struct fdisk_gpt_label *gpt) |
| { |
| size_t i; |
| |
| assert(gpt); |
| assert(gpt->pheader); |
| assert(gpt->ents); |
| |
| for (i = 0; i < gpt_get_nentries(gpt); i++) { |
| struct gpt_entry *e = gpt_get_entry(gpt, i); |
| |
| if (!gpt_entry_is_used(e)) |
| continue; |
| if (gpt_partition_start(e) > gpt_partition_end(e)) |
| return i + 1; |
| } |
| |
| return 0; |
| } |
| |
| /* |
| * Check if partition e1 overlaps with partition e2. |
| */ |
| static inline int partition_overlap(struct gpt_entry *e1, struct gpt_entry *e2) |
| { |
| uint64_t start1 = gpt_partition_start(e1); |
| uint64_t end1 = gpt_partition_end(e1); |
| uint64_t start2 = gpt_partition_start(e2); |
| uint64_t end2 = gpt_partition_end(e2); |
| |
| return (start1 && start2 && (start1 <= end2) != (end1 < start2)); |
| } |
| |
| /* |
| * Find any partitions that overlap. |
| */ |
| static uint32_t check_overlap_partitions(struct fdisk_gpt_label *gpt) |
| { |
| size_t i, j; |
| |
| assert(gpt); |
| assert(gpt->pheader); |
| assert(gpt->ents); |
| |
| for (i = 0; i < gpt_get_nentries(gpt); i++) |
| for (j = 0; j < i; j++) { |
| struct gpt_entry *ei = gpt_get_entry(gpt, i); |
| struct gpt_entry *ej = gpt_get_entry(gpt, j); |
| |
| if (!gpt_entry_is_used(ei) || !gpt_entry_is_used(ej)) |
| continue; |
| if (partition_overlap(ei, ej)) { |
| DBG(LABEL, ul_debug("GPT partitions overlap detected [%zu vs. %zu]", i, j)); |
| return i + 1; |
| } |
| } |
| |
| return 0; |
| } |
| |
| /* |
| * Find the first available block after the starting point; returns 0 if |
| * there are no available blocks left, or error. From gdisk. |
| */ |
| static uint64_t find_first_available(struct fdisk_gpt_label *gpt, uint64_t start) |
| { |
| int first_moved = 0; |
| uint64_t first; |
| uint64_t fu, lu; |
| |
| assert(gpt); |
| assert(gpt->pheader); |
| assert(gpt->ents); |
| |
| fu = le64_to_cpu(gpt->pheader->first_usable_lba); |
| lu = le64_to_cpu(gpt->pheader->last_usable_lba); |
| |
| /* |
| * Begin from the specified starting point or from the first usable |
| * LBA, whichever is greater... |
| */ |
| first = start < fu ? fu : start; |
| |
| /* |
| * Now search through all partitions; if first is within an |
| * existing partition, move it to the next sector after that |
| * partition and repeat. If first was moved, set firstMoved |
| * flag; repeat until firstMoved is not set, so as to catch |
| * cases where partitions are out of sequential order.... |
| */ |
| do { |
| size_t i; |
| |
| first_moved = 0; |
| for (i = 0; i < gpt_get_nentries(gpt); i++) { |
| struct gpt_entry *e = gpt_get_entry(gpt, i); |
| |
| if (!gpt_entry_is_used(e)) |
| continue; |
| if (first < gpt_partition_start(e)) |
| continue; |
| if (first <= gpt_partition_end(e)) { |
| first = gpt_partition_end(e) + 1; |
| first_moved = 1; |
| } |
| } |
| } while (first_moved == 1); |
| |
| if (first > lu) |
| first = 0; |
| |
| return first; |
| } |
| |
| |
| /* Returns last available sector in the free space pointed to by start. From gdisk. */ |
| static uint64_t find_last_free(struct fdisk_gpt_label *gpt, uint64_t start) |
| { |
| size_t i; |
| uint64_t nearest_start; |
| |
| assert(gpt); |
| assert(gpt->pheader); |
| assert(gpt->ents); |
| |
| nearest_start = le64_to_cpu(gpt->pheader->last_usable_lba); |
| |
| for (i = 0; i < gpt_get_nentries(gpt); i++) { |
| struct gpt_entry *e = gpt_get_entry(gpt, i); |
| uint64_t ps = gpt_partition_start(e); |
| |
| if (nearest_start > ps && ps > start) |
| nearest_start = ps - 1ULL; |
| } |
| |
| return nearest_start; |
| } |
| |
| /* Returns the last free sector on the disk. From gdisk. */ |
| static uint64_t find_last_free_sector(struct fdisk_gpt_label *gpt) |
| { |
| int last_moved; |
| uint64_t last = 0; |
| |
| assert(gpt); |
| assert(gpt->pheader); |
| assert(gpt->ents); |
| |
| /* start by assuming the last usable LBA is available */ |
| last = le64_to_cpu(gpt->pheader->last_usable_lba); |
| do { |
| size_t i; |
| |
| last_moved = 0; |
| for (i = 0; i < gpt_get_nentries(gpt); i++) { |
| struct gpt_entry *e = gpt_get_entry(gpt, i); |
| |
| if (last >= gpt_partition_start(e) && |
| last <= gpt_partition_end(e)) { |
| last = gpt_partition_start(e) - 1ULL; |
| last_moved = 1; |
| } |
| } |
| } while (last_moved == 1); |
| |
| return last; |
| } |
| |
| /* |
| * Finds the first available sector in the largest block of unallocated |
| * space on the disk. Returns 0 if there are no available blocks left. |
| * From gdisk. |
| */ |
| static uint64_t find_first_in_largest(struct fdisk_gpt_label *gpt) |
| { |
| uint64_t start = 0, first_sect, last_sect; |
| uint64_t segment_size, selected_size = 0, selected_segment = 0; |
| |
| assert(gpt); |
| assert(gpt->pheader); |
| assert(gpt->ents); |
| |
| do { |
| first_sect = find_first_available(gpt, start); |
| if (first_sect != 0) { |
| last_sect = find_last_free(gpt, first_sect); |
| segment_size = last_sect - first_sect + 1ULL; |
| |
| if (segment_size > selected_size) { |
| selected_size = segment_size; |
| selected_segment = first_sect; |
| } |
| start = last_sect + 1ULL; |
| } |
| } while (first_sect != 0); |
| |
| return selected_segment; |
| } |
| |
| /* |
| * Find the total number of free sectors, the number of segments in which |
| * they reside, and the size of the largest of those segments. From gdisk. |
| */ |
| static uint64_t get_free_sectors(struct fdisk_context *cxt, |
| struct fdisk_gpt_label *gpt, |
| uint32_t *nsegments, |
| uint64_t *largest_segment) |
| { |
| uint32_t num = 0; |
| uint64_t first_sect, last_sect; |
| uint64_t largest_seg = 0, segment_sz; |
| uint64_t totfound = 0, start = 0; /* starting point for each search */ |
| |
| if (!cxt->total_sectors) |
| goto done; |
| |
| assert(gpt); |
| assert(gpt->pheader); |
| assert(gpt->ents); |
| |
| do { |
| first_sect = find_first_available(gpt, start); |
| if (first_sect) { |
| last_sect = find_last_free(gpt, first_sect); |
| segment_sz = last_sect - first_sect + 1; |
| |
| if (segment_sz > largest_seg) |
| largest_seg = segment_sz; |
| totfound += segment_sz; |
| num++; |
| start = last_sect + 1ULL; |
| } |
| } while (first_sect); |
| |
| done: |
| if (nsegments) |
| *nsegments = num; |
| if (largest_segment) |
| *largest_segment = largest_seg; |
| |
| return totfound; |
| } |
| |
| static int gpt_probe_label(struct fdisk_context *cxt) |
| { |
| int mbr_type; |
| struct fdisk_gpt_label *gpt; |
| |
| assert(cxt); |
| assert(cxt->label); |
| assert(fdisk_is_label(cxt, GPT)); |
| |
| gpt = self_label(cxt); |
| |
| /* TODO: it would be nice to support scenario when GPT headers are OK, |
| * but PMBR is corrupt */ |
| mbr_type = valid_pmbr(cxt); |
| if (!mbr_type) |
| goto failed; |
| |
| DBG(LABEL, ul_debug("found a %s MBR", mbr_type == GPT_MBR_PROTECTIVE ? |
| "protective" : "hybrid")); |
| |
| /* primary header */ |
| gpt->pheader = gpt_read_header(cxt, GPT_PRIMARY_PARTITION_TABLE_LBA, |
| &gpt->ents); |
| |
| if (gpt->pheader) |
| /* primary OK, try backup from alternative LBA */ |
| gpt->bheader = gpt_read_header(cxt, |
| le64_to_cpu(gpt->pheader->alternative_lba), |
| NULL); |
| else |
| /* primary corrupted -- try last LBA */ |
| gpt->bheader = gpt_read_header(cxt, last_lba(cxt), &gpt->ents); |
| |
| if (!gpt->pheader && !gpt->bheader) |
| goto failed; |
| |
| /* primary OK, backup corrupted -- recovery */ |
| if (gpt->pheader && !gpt->bheader) { |
| fdisk_warnx(cxt, _("The backup GPT table is corrupt, but the " |
| "primary appears OK, so that will be used.")); |
| gpt->bheader = gpt_copy_header(cxt, gpt->pheader); |
| if (!gpt->bheader) |
| goto failed; |
| gpt_recompute_crc(gpt->bheader, gpt->ents); |
| fdisk_label_set_changed(cxt->label, 1); |
| |
| /* primary corrupted, backup OK -- recovery */ |
| } else if (!gpt->pheader && gpt->bheader) { |
| fdisk_warnx(cxt, _("The primary GPT table is corrupt, but the " |
| "backup appears OK, so that will be used.")); |
| gpt->pheader = gpt_copy_header(cxt, gpt->bheader); |
| if (!gpt->pheader) |
| goto failed; |
| gpt_recompute_crc(gpt->pheader, gpt->ents); |
| fdisk_label_set_changed(cxt->label, 1); |
| } |
| |
| /* The headers make be correct, but Backup do not have to be on the end |
| * of the device (due to device resize, etc.). Let's fix this issue. */ |
| if (le64_to_cpu(gpt->pheader->alternative_lba) > cxt->total_sectors || |
| le64_to_cpu(gpt->pheader->alternative_lba) < cxt->total_sectors - 1ULL) { |
| fdisk_warnx(cxt, _("The backup GPT table is not on the end of the device. " |
| "This problem will be corrected by write.")); |
| |
| gpt_fix_alternative_lba(cxt, gpt); |
| gpt_recompute_crc(gpt->bheader, gpt->ents); |
| gpt_recompute_crc(gpt->pheader, gpt->ents); |
| fdisk_label_set_changed(cxt->label, 1); |
| } |
| |
| cxt->label->nparts_max = gpt_get_nentries(gpt); |
| cxt->label->nparts_cur = partitions_in_use(gpt); |
| return 1; |
| failed: |
| DBG(LABEL, ul_debug("GPT probe failed")); |
| gpt_deinit(cxt->label); |
| return 0; |
| } |
| |
| /* |
| * Stolen from libblkid - can be removed once partition semantics |
| * are added to the fdisk API. |
| */ |
| static char *encode_to_utf8(unsigned char *src, size_t count) |
| { |
| uint16_t c; |
| char *dest; |
| size_t i, j; |
| size_t len = count * 3 / 2; |
| |
| dest = calloc(1, len + 1); |
| if (!dest) |
| return NULL; |
| |
| for (j = i = 0; i + 2 <= count; i += 2) { |
| /* always little endian */ |
| c = (src[i+1] << 8) | src[i]; |
| if (c == 0) { |
| break; |
| } else if (c < 0x80) { |
| if (j+1 > len) |
| break; |
| dest[j++] = (uint8_t) c; |
| } else if (c < 0x800) { |
| if (j+2 > len) |
| break; |
| dest[j++] = (uint8_t) (0xc0 | (c >> 6)); |
| dest[j++] = (uint8_t) (0x80 | (c & 0x3f)); |
| } else { |
| if (j+3 > len) |
| break; |
| dest[j++] = (uint8_t) (0xe0 | (c >> 12)); |
| dest[j++] = (uint8_t) (0x80 | ((c >> 6) & 0x3f)); |
| dest[j++] = (uint8_t) (0x80 | (c & 0x3f)); |
| } |
| } |
| |
| return dest; |
| } |
| |
| static int gpt_entry_attrs_to_string(struct gpt_entry *e, char **res) |
| { |
| unsigned int n, count = 0; |
| size_t l; |
| char *bits, *p; |
| uint64_t attrs; |
| |
| assert(e); |
| assert(res); |
| |
| *res = NULL; |
| attrs = e->attrs; |
| if (!attrs) |
| return 0; /* no attributes at all */ |
| |
| bits = (char *) &attrs; |
| |
| /* Note that sizeof() is correct here, we need separators between |
| * the strings so also count \0 is correct */ |
| *res = calloc(1, sizeof(GPT_ATTRSTR_NOBLOCK) + |
| sizeof(GPT_ATTRSTR_REQ) + |
| sizeof(GPT_ATTRSTR_LEGACY) + |
| sizeof("GUID:") + (GPT_ATTRBIT_GUID_COUNT * 3)); |
| if (!*res) |
| return -errno; |
| |
| p = *res; |
| if (isset(bits, GPT_ATTRBIT_REQ)) { |
| memcpy(p, GPT_ATTRSTR_REQ, (l = sizeof(GPT_ATTRSTR_REQ))); |
| p += l - 1; |
| } |
| if (isset(bits, GPT_ATTRBIT_NOBLOCK)) { |
| if (p > *res) |
| *p++ = ' '; |
| memcpy(p, GPT_ATTRSTR_NOBLOCK, (l = sizeof(GPT_ATTRSTR_NOBLOCK))); |
| p += l - 1; |
| } |
| if (isset(bits, GPT_ATTRBIT_LEGACY)) { |
| if (p > *res) |
| *p++ = ' '; |
| memcpy(p, GPT_ATTRSTR_LEGACY, (l = sizeof(GPT_ATTRSTR_LEGACY))); |
| p += l - 1; |
| } |
| |
| for (n = GPT_ATTRBIT_GUID_FIRST; |
| n < GPT_ATTRBIT_GUID_FIRST + GPT_ATTRBIT_GUID_COUNT; n++) { |
| |
| if (!isset(bits, n)) |
| continue; |
| if (!count) { |
| if (p > *res) |
| *p++ = ' '; |
| p += sprintf(p, "GUID:%u", n); |
| } else |
| p += sprintf(p, ",%u", n); |
| count++; |
| } |
| |
| return 0; |
| } |
| |
| static int gpt_entry_attrs_from_string( |
| struct fdisk_context *cxt, |
| struct gpt_entry *e, |
| const char *str) |
| { |
| const char *p = str; |
| uint64_t attrs = 0; |
| char *bits; |
| |
| assert(e); |
| assert(p); |
| |
| DBG(LABEL, ul_debug("GPT: parsing string attributes '%s'", p)); |
| |
| bits = (char *) &attrs; |
| |
| while (p && *p) { |
| int bit = -1; |
| |
| while (isblank(*p)) p++; |
| if (!*p) |
| break; |
| |
| DBG(LABEL, ul_debug(" parsing item '%s'", p)); |
| |
| if (strncmp(p, GPT_ATTRSTR_REQ, |
| sizeof(GPT_ATTRSTR_REQ) - 1) == 0) { |
| bit = GPT_ATTRBIT_REQ; |
| p += sizeof(GPT_ATTRSTR_REQ) - 1; |
| } else if (strncmp(p, GPT_ATTRSTR_REQ_TYPO, |
| sizeof(GPT_ATTRSTR_REQ_TYPO) - 1) == 0) { |
| bit = GPT_ATTRBIT_REQ; |
| p += sizeof(GPT_ATTRSTR_REQ_TYPO) - 1; |
| } else if (strncmp(p, GPT_ATTRSTR_LEGACY, |
| sizeof(GPT_ATTRSTR_LEGACY) - 1) == 0) { |
| bit = GPT_ATTRBIT_LEGACY; |
| p += sizeof(GPT_ATTRSTR_LEGACY) - 1; |
| } else if (strncmp(p, GPT_ATTRSTR_NOBLOCK, |
| sizeof(GPT_ATTRSTR_NOBLOCK) - 1) == 0) { |
| bit = GPT_ATTRBIT_NOBLOCK; |
| p += sizeof(GPT_ATTRSTR_NOBLOCK) - 1; |
| |
| /* GUID:<bit> as well as <bit> */ |
| } else if (isdigit((unsigned char) *p) |
| || (strncmp(p, "GUID:", 5) == 0 |
| && isdigit((unsigned char) *(p + 5)))) { |
| char *end = NULL; |
| |
| if (*p == 'G') |
| p += 5; |
| |
| errno = 0; |
| bit = strtol(p, &end, 0); |
| if (errno || !end || end == str |
| || bit < GPT_ATTRBIT_GUID_FIRST |
| || bit >= GPT_ATTRBIT_GUID_FIRST + GPT_ATTRBIT_GUID_COUNT) |
| bit = -1; |
| else |
| p = end; |
| } |
| |
| if (bit < 0) { |
| fdisk_warnx(cxt, _("unsupported GPT attribute bit '%s'"), p); |
| return -EINVAL; |
| } |
| |
| if (*p && *p != ',' && !isblank(*p)) { |
| fdisk_warnx(cxt, _("failed to parse GPT attribute string '%s'"), str); |
| return -EINVAL; |
| } |
| |
| setbit(bits, bit); |
| |
| while (isblank(*p)) p++; |
| if (*p == ',') |
| p++; |
| } |
| |
| e->attrs = attrs; |
| return 0; |
| } |
| |
| static int gpt_get_partition(struct fdisk_context *cxt, size_t n, |
| struct fdisk_partition *pa) |
| { |
| struct fdisk_gpt_label *gpt; |
| struct gpt_entry *e; |
| char u_str[UUID_STR_LEN]; |
| int rc = 0; |
| struct gpt_guid guid; |
| |
| assert(cxt); |
| assert(cxt->label); |
| assert(fdisk_is_label(cxt, GPT)); |
| |
| gpt = self_label(cxt); |
| |
| if (n >= gpt_get_nentries(gpt)) |
| return -EINVAL; |
| |
| gpt = self_label(cxt); |
| e = gpt_get_entry(gpt, n); |
| |
| pa->used = gpt_entry_is_used(e) || gpt_partition_start(e); |
| if (!pa->used) |
| return 0; |
| |
| pa->start = gpt_partition_start(e); |
| pa->size = gpt_partition_size(e); |
| pa->type = gpt_partition_parttype(cxt, e); |
| |
| guid = e->partition_guid; |
| if (guid_to_string(&guid, u_str)) { |
| pa->uuid = strdup(u_str); |
| if (!pa->uuid) { |
| rc = -errno; |
| goto done; |
| } |
| } else |
| pa->uuid = NULL; |
| |
| rc = gpt_entry_attrs_to_string(e, &pa->attrs); |
| if (rc) |
| goto done; |
| |
| pa->name = encode_to_utf8((unsigned char *)e->name, sizeof(e->name)); |
| return 0; |
| done: |
| fdisk_reset_partition(pa); |
| return rc; |
| } |
| |
| |
| static int gpt_set_partition(struct fdisk_context *cxt, size_t n, |
| struct fdisk_partition *pa) |
| { |
| struct fdisk_gpt_label *gpt; |
| struct gpt_entry *e; |
| int rc = 0; |
| uint64_t start, end; |
| |
| assert(cxt); |
| assert(cxt->label); |
| assert(fdisk_is_label(cxt, GPT)); |
| |
| gpt = self_label(cxt); |
| |
| if (n >= gpt_get_nentries(gpt)) |
| return -EINVAL; |
| |
| FDISK_INIT_UNDEF(start); |
| FDISK_INIT_UNDEF(end); |
| |
| gpt = self_label(cxt); |
| e = gpt_get_entry(gpt, n); |
| |
| if (pa->uuid) { |
| char new_u[UUID_STR_LEN], old_u[UUID_STR_LEN]; |
| struct gpt_guid guid; |
| |
| guid = e->partition_guid; |
| guid_to_string(&guid, old_u); |
| rc = gpt_entry_set_uuid(e, pa->uuid); |
| if (rc) |
| return rc; |
| guid = e->partition_guid; |
| guid_to_string(&guid, new_u); |
| fdisk_info(cxt, _("Partition UUID changed from %s to %s."), |
| old_u, new_u); |
| } |
| |
| if (pa->name) { |
| int len; |
| char *old = encode_to_utf8((unsigned char *)e->name, sizeof(e->name)); |
| len = gpt_entry_set_name(e, pa->name); |
| if (len < 0) |
| fdisk_warn(cxt, _("Failed to translate partition name, name not changed.")); |
| else |
| fdisk_info(cxt, _("Partition name changed from '%s' to '%.*s'."), |
| old, len, pa->name); |
| free(old); |
| } |
| |
| if (pa->type && pa->type->typestr) { |
| struct gpt_guid typeid; |
| |
| rc = string_to_guid(pa->type->typestr, &typeid); |
| if (rc) |
| return rc; |
| gpt_entry_set_type(e, &typeid); |
| } |
| if (pa->attrs) { |
| rc = gpt_entry_attrs_from_string(cxt, e, pa->attrs); |
| if (rc) |
| return rc; |
| } |
| |
| if (fdisk_partition_has_start(pa)) |
| start = pa->start; |
| if (fdisk_partition_has_size(pa) || fdisk_partition_has_start(pa)) { |
| uint64_t xstart = fdisk_partition_has_start(pa) ? pa->start : gpt_partition_start(e); |
| uint64_t xsize = fdisk_partition_has_size(pa) ? pa->size : gpt_partition_size(e); |
| end = xstart + xsize - 1ULL; |
| } |
| |
| if (!FDISK_IS_UNDEF(start)) { |
| if (start < le64_to_cpu(gpt->pheader->first_usable_lba)) { |
| fdisk_warnx(cxt, _("The start of the partition understeps FirstUsableLBA.")); |
| return -EINVAL; |
| } |
| e->lba_start = cpu_to_le64(start); |
| } |
| if (!FDISK_IS_UNDEF(end)) { |
| if (end > le64_to_cpu(gpt->pheader->last_usable_lba)) { |
| fdisk_warnx(cxt, _("The end of the partition oversteps LastUsableLBA.")); |
| return -EINVAL; |
| } |
| e->lba_end = cpu_to_le64(end); |
| } |
| gpt_recompute_crc(gpt->pheader, gpt->ents); |
| gpt_recompute_crc(gpt->bheader, gpt->ents); |
| |
| fdisk_label_set_changed(cxt->label, 1); |
| return rc; |
| } |
| |
| |
| |
| /* |
| * Write partitions. |
| * Returns 0 on success, or corresponding error otherwise. |
| */ |
| static int gpt_write_partitions(struct fdisk_context *cxt, |
| struct gpt_header *header, unsigned char *ents) |
| { |
| off_t offset = (off_t) le64_to_cpu(header->partition_entry_lba) * cxt->sector_size; |
| size_t towrite = 0; |
| ssize_t ssz; |
| int rc; |
| |
| rc = gpt_sizeof_ents(header, &towrite); |
| if (rc) |
| return rc; |
| |
| if (offset != lseek(cxt->dev_fd, offset, SEEK_SET)) |
| return -errno; |
| |
| ssz = write(cxt->dev_fd, ents, towrite); |
| if (ssz < 0 || (ssize_t) towrite != ssz) |
| return -errno; |
| |
| return 0; |
| } |
| |
| /* |
| * Write a GPT header to a specified LBA. |
| * |
| * We read all sector, so we have to write all sector back |
| * to the device -- never ever rely on sizeof(struct gpt_header)! |
| * |
| * Returns 0 on success, or corresponding error otherwise. |
| */ |
| static int gpt_write_header(struct fdisk_context *cxt, |
| struct gpt_header *header, uint64_t lba) |
| { |
| off_t offset = lba * cxt->sector_size; |
| |
| if (offset != lseek(cxt->dev_fd, offset, SEEK_SET)) |
| goto fail; |
| if (cxt->sector_size == |
| (size_t) write(cxt->dev_fd, header, cxt->sector_size)) |
| return 0; |
| fail: |
| return -errno; |
| } |
| |
| /* |
| * Write the protective MBR. |
| * Returns 0 on success, or corresponding error otherwise. |
| */ |
| static int gpt_write_pmbr(struct fdisk_context *cxt) |
| { |
| off_t offset; |
| struct gpt_legacy_mbr *pmbr; |
| |
| assert(cxt); |
| assert(cxt->firstsector); |
| |
| pmbr = (struct gpt_legacy_mbr *) cxt->firstsector; |
| |
| /* zero out the legacy partitions */ |
| memset(pmbr->partition_record, 0, sizeof(pmbr->partition_record)); |
| |
| pmbr->signature = cpu_to_le16(MSDOS_MBR_SIGNATURE); |
| pmbr->partition_record[0].os_type = EFI_PMBR_OSTYPE; |
| pmbr->partition_record[0].start_sector = 2; |
| pmbr->partition_record[0].end_head = 0xFF; |
| pmbr->partition_record[0].end_sector = 0xFF; |
| pmbr->partition_record[0].end_track = 0xFF; |
| pmbr->partition_record[0].starting_lba = cpu_to_le32(1); |
| |
| /* |
| * Set size_in_lba to the size of the disk minus one. If the size of the disk |
| * is too large to be represented by a 32bit LBA (2Tb), set it to 0xFFFFFFFF. |
| */ |
| if (cxt->total_sectors - 1ULL > 0xFFFFFFFFULL) |
| pmbr->partition_record[0].size_in_lba = cpu_to_le32(0xFFFFFFFF); |
| else |
| pmbr->partition_record[0].size_in_lba = |
| cpu_to_le32((uint32_t) (cxt->total_sectors - 1ULL)); |
| |
| offset = GPT_PMBR_LBA * cxt->sector_size; |
| if (offset != lseek(cxt->dev_fd, offset, SEEK_SET)) |
| goto fail; |
| |
| /* pMBR covers the first sector (LBA) of the disk */ |
| if (write_all(cxt->dev_fd, pmbr, cxt->sector_size)) |
| goto fail; |
| return 0; |
| fail: |
| return -errno; |
| } |
| |
| /* |
| * Writes in-memory GPT and pMBR data to disk. |
| * Returns 0 if successful write, otherwise, a corresponding error. |
| * Any indication of error will abort the operation. |
| */ |
| static int gpt_write_disklabel(struct fdisk_context *cxt) |
| { |
| struct fdisk_gpt_label *gpt; |
| int mbr_type; |
| |
| assert(cxt); |
| assert(cxt->label); |
| assert(fdisk_is_label(cxt, GPT)); |
| |
| gpt = self_label(cxt); |
| mbr_type = valid_pmbr(cxt); |
| |
| /* check that disk is big enough to handle the backup header */ |
| if (le64_to_cpu(gpt->pheader->alternative_lba) > cxt->total_sectors) |
| goto err0; |
| |
| /* check that the backup header is properly placed */ |
| if (le64_to_cpu(gpt->pheader->alternative_lba) < cxt->total_sectors - 1ULL) |
| goto err0; |
| |
| if (check_overlap_partitions(gpt)) |
| goto err0; |
| |
| /* recompute CRCs for both headers */ |
| gpt_recompute_crc(gpt->pheader, gpt->ents); |
| gpt_recompute_crc(gpt->bheader, gpt->ents); |
| |
| /* |
| * UEFI requires writing in this specific order: |
| * 1) backup partition tables |
| * 2) backup GPT header |
| * 3) primary partition tables |
| * 4) primary GPT header |
| * 5) protective MBR |
| * |
| * If any write fails, we abort the rest. |
| */ |
| if (gpt_write_partitions(cxt, gpt->bheader, gpt->ents) != 0) |
| goto err1; |
| if (gpt_write_header(cxt, gpt->bheader, |
| le64_to_cpu(gpt->pheader->alternative_lba)) != 0) |
| goto err1; |
| if (gpt_write_partitions(cxt, gpt->pheader, gpt->ents) != 0) |
| goto err1; |
| if (gpt_write_header(cxt, gpt->pheader, GPT_PRIMARY_PARTITION_TABLE_LBA) != 0) |
| goto err1; |
| |
| if (mbr_type == GPT_MBR_HYBRID) |
| fdisk_warnx(cxt, _("The device contains hybrid MBR -- writing GPT only. " |
| "You have to sync the MBR manually.")); |
| else if (gpt_write_pmbr(cxt) != 0) |
| goto err1; |
| |
| DBG(LABEL, ul_debug("GPT write success")); |
| return 0; |
| err0: |
| DBG(LABEL, ul_debug("GPT write failed: incorrect input")); |
| errno = EINVAL; |
| return -EINVAL; |
| err1: |
| DBG(LABEL, ul_debug("GPT write failed: %m")); |
| return -errno; |
| } |
| |
| /* |
| * Verify data integrity and report any found problems for: |
| * - primary and backup header validations |
| * - partition validations |
| */ |
| static int gpt_verify_disklabel(struct fdisk_context *cxt) |
| { |
| int nerror = 0; |
| unsigned int ptnum; |
| struct fdisk_gpt_label *gpt; |
| |
| assert(cxt); |
| assert(cxt->label); |
| assert(fdisk_is_label(cxt, GPT)); |
| |
| gpt = self_label(cxt); |
| if (!gpt) |
| return -EINVAL; |
| |
| if (!gpt->bheader) { |
| nerror++; |
| fdisk_warnx(cxt, _("Disk does not contain a valid backup header.")); |
| } |
| |
| if (!gpt_check_header_crc(gpt->pheader, gpt->ents)) { |
| nerror++; |
| fdisk_warnx(cxt, _("Invalid primary header CRC checksum.")); |
| } |
| if (gpt->bheader && !gpt_check_header_crc(gpt->bheader, gpt->ents)) { |
| nerror++; |
| fdisk_warnx(cxt, _("Invalid backup header CRC checksum.")); |
| } |
| |
| if (!gpt_check_entryarr_crc(gpt->pheader, gpt->ents)) { |
| nerror++; |
| fdisk_warnx(cxt, _("Invalid partition entry checksum.")); |
| } |
| |
| if (!gpt_check_lba_sanity(cxt, gpt->pheader)) { |
| nerror++; |
| fdisk_warnx(cxt, _("Invalid primary header LBA sanity checks.")); |
| } |
| if (gpt->bheader && !gpt_check_lba_sanity(cxt, gpt->bheader)) { |
| nerror++; |
| fdisk_warnx(cxt, _("Invalid backup header LBA sanity checks.")); |
| } |
| |
| if (le64_to_cpu(gpt->pheader->my_lba) != GPT_PRIMARY_PARTITION_TABLE_LBA) { |
| nerror++; |
| fdisk_warnx(cxt, _("MyLBA mismatch with real position at primary header.")); |
| } |
| if (gpt->bheader && le64_to_cpu(gpt->bheader->my_lba) != last_lba(cxt)) { |
| nerror++; |
| fdisk_warnx(cxt, _("MyLBA mismatch with real position at backup header.")); |
| |
| } |
| if (le64_to_cpu(gpt->pheader->alternative_lba) >= cxt->total_sectors) { |
| nerror++; |
| fdisk_warnx(cxt, _("Disk is too small to hold all data.")); |
| } |
| |
| /* |
| * if the GPT is the primary table, check the alternateLBA |
| * to see if it is a valid GPT |
| */ |
| if (gpt->bheader && (le64_to_cpu(gpt->pheader->my_lba) != |
| le64_to_cpu(gpt->bheader->alternative_lba))) { |
| nerror++; |
| fdisk_warnx(cxt, _("Primary and backup header mismatch.")); |
| } |
| |
| ptnum = check_overlap_partitions(gpt); |
| if (ptnum) { |
| nerror++; |
| fdisk_warnx(cxt, _("Partition %u overlaps with partition %u."), |
| ptnum, ptnum+1); |
| } |
| |
| ptnum = check_too_big_partitions(gpt, cxt->total_sectors); |
| if (ptnum) { |
| nerror++; |
| fdisk_warnx(cxt, _("Partition %u is too big for the disk."), |
| ptnum); |
| } |
| |
| ptnum = check_start_after_end_partitions(gpt); |
| if (ptnum) { |
| nerror++; |
| fdisk_warnx(cxt, _("Partition %u ends before it starts."), |
| ptnum); |
| } |
| |
| if (!nerror) { /* yay :-) */ |
| uint32_t nsegments = 0; |
| uint64_t free_sectors = 0, largest_segment = 0; |
| char *strsz = NULL; |
| |
| fdisk_info(cxt, _("No errors detected.")); |
| fdisk_info(cxt, _("Header version: %s"), gpt_get_header_revstr(gpt->pheader)); |
| fdisk_info(cxt, _("Using %zu out of %zu partitions."), |
| partitions_in_use(gpt), |
| gpt_get_nentries(gpt)); |
| |
| free_sectors = get_free_sectors(cxt, gpt, &nsegments, &largest_segment); |
| if (largest_segment) |
| strsz = size_to_human_string(SIZE_SUFFIX_SPACE | SIZE_SUFFIX_3LETTER, |
| largest_segment * cxt->sector_size); |
| |
| fdisk_info(cxt, |
| P_("A total of %ju free sectors is available in %u segment.", |
| "A total of %ju free sectors is available in %u segments " |
| "(the largest is %s).", nsegments), |
| free_sectors, nsegments, strsz); |
| free(strsz); |
| |
| } else |
| fdisk_warnx(cxt, |
| P_("%d error detected.", "%d errors detected.", nerror), |
| nerror); |
| |
| return 0; |
| } |
| |
| /* Delete a single GPT partition, specified by partnum. */ |
| static int gpt_delete_partition(struct fdisk_context *cxt, |
| size_t partnum) |
| { |
| struct fdisk_gpt_label *gpt; |
| |
| assert(cxt); |
| assert(cxt->label); |
| assert(fdisk_is_label(cxt, GPT)); |
| |
| gpt = self_label(cxt); |
| |
| if (partnum >= cxt->label->nparts_max) |
| return -EINVAL; |
| |
| if (!gpt_entry_is_used(gpt_get_entry(gpt, partnum))) |
| return -EINVAL; |
| |
| /* hasta la vista, baby! */ |
| gpt_zeroize_entry(gpt, partnum); |
| |
| gpt_recompute_crc(gpt->pheader, gpt->ents); |
| gpt_recompute_crc(gpt->bheader, gpt->ents); |
| cxt->label->nparts_cur--; |
| fdisk_label_set_changed(cxt->label, 1); |
| |
| return 0; |
| } |
| |
| |
| /* Performs logical checks to add a new partition entry */ |
| static int gpt_add_partition( |
| struct fdisk_context *cxt, |
| struct fdisk_partition *pa, |
| size_t *partno) |
| { |
| uint64_t user_f, user_l; /* user input ranges for first and last sectors */ |
| uint64_t disk_f, disk_l; /* first and last available sector ranges on device*/ |
| uint64_t dflt_f, dflt_l; /* largest segment (default) */ |
| struct gpt_guid typeid; |
| struct fdisk_gpt_label *gpt; |
| struct gpt_header *pheader; |
| struct gpt_entry *e; |
| struct fdisk_ask *ask = NULL; |
| size_t partnum; |
| int rc; |
| |
| assert(cxt); |
| assert(cxt->label); |
| assert(fdisk_is_label(cxt, GPT)); |
| |
| gpt = self_label(cxt); |
| |
| assert(gpt); |
| assert(gpt->pheader); |
| assert(gpt->ents); |
| |
| pheader = gpt->pheader; |
| |
| rc = fdisk_partition_next_partno(pa, cxt, &partnum); |
| if (rc) { |
| DBG(LABEL, ul_debug("GPT failed to get next partno")); |
| return rc; |
| } |
| |
| assert(partnum < gpt_get_nentries(gpt)); |
| |
| if (gpt_entry_is_used(gpt_get_entry(gpt, partnum))) { |
| fdisk_warnx(cxt, _("Partition %zu is already defined. " |
| "Delete it before re-adding it."), partnum +1); |
| return -ERANGE; |
| } |
| if (gpt_get_nentries(gpt) == partitions_in_use(gpt)) { |
| fdisk_warnx(cxt, _("All partitions are already in use.")); |
| return -ENOSPC; |
| } |
| if (!get_free_sectors(cxt, gpt, NULL, NULL)) { |
| fdisk_warnx(cxt, _("No free sectors available.")); |
| return -ENOSPC; |
| } |
| |
| rc = string_to_guid(pa && pa->type && pa->type->typestr ? |
| pa->type->typestr: |
| GPT_DEFAULT_ENTRY_TYPE, &typeid); |
| if (rc) |
| return rc; |
| |
| disk_f = find_first_available(gpt, le64_to_cpu(pheader->first_usable_lba)); |
| e = gpt_get_entry(gpt, 0); |
| |
| /* if first sector no explicitly defined then ignore small gaps before |
| * the first partition */ |
| if ((!pa || !fdisk_partition_has_start(pa)) |
| && gpt_entry_is_used(e) |
| && disk_f < gpt_partition_start(e)) { |
| |
| do { |
| uint64_t x; |
| DBG(LABEL, ul_debug("testing first sector %"PRIu64"", disk_f)); |
| disk_f = find_first_available(gpt, disk_f); |
| if (!disk_f) |
| break; |
| x = find_last_free(gpt, disk_f); |
| if (x - disk_f >= cxt->grain / cxt->sector_size) |
| break; |
| DBG(LABEL, ul_debug("first sector %"PRIu64" addresses to small space, continue...", disk_f)); |
| disk_f = x + 1ULL; |
| } while(1); |
| |
| if (disk_f == 0) |
| disk_f = find_first_available(gpt, le64_to_cpu(pheader->first_usable_lba)); |
| } |
| |
| e = NULL; |
| disk_l = find_last_free_sector(gpt); |
| |
| /* the default is the largest free space */ |
| dflt_f = find_first_in_largest(gpt); |
| dflt_l = find_last_free(gpt, dflt_f); |
| |
| /* align the default in range <dflt_f,dflt_l>*/ |
| dflt_f = fdisk_align_lba_in_range(cxt, dflt_f, dflt_f, dflt_l); |
| |
| /* first sector */ |
| if (pa && pa->start_follow_default) { |
| user_f = dflt_f; |
| |
| } else if (pa && fdisk_partition_has_start(pa)) { |
| DBG(LABEL, ul_debug("first sector defined: %ju", (uintmax_t)pa->start)); |
| if (pa->start != find_first_available(gpt, pa->start)) { |
| fdisk_warnx(cxt, _("Sector %ju already used."), (uintmax_t)pa->start); |
| return -ERANGE; |
| } |
| user_f = pa->start; |
| } else { |
| /* ask by dialog */ |
| for (;;) { |
| if (!ask) |
| ask = fdisk_new_ask(); |
| else |
| fdisk_reset_ask(ask); |
| if (!ask) |
| return -ENOMEM; |
| |
| /* First sector */ |
| fdisk_ask_set_query(ask, _("First sector")); |
| fdisk_ask_set_type(ask, FDISK_ASKTYPE_NUMBER); |
| fdisk_ask_number_set_low(ask, disk_f); /* minimal */ |
| fdisk_ask_number_set_default(ask, dflt_f); /* default */ |
| fdisk_ask_number_set_high(ask, disk_l); /* maximal */ |
| |
| rc = fdisk_do_ask(cxt, ask); |
| if (rc) |
| goto done; |
| |
| user_f = fdisk_ask_number_get_result(ask); |
| if (user_f != find_first_available(gpt, user_f)) { |
| fdisk_warnx(cxt, _("Sector %ju already used."), user_f); |
| continue; |
| } |
| break; |
| } |
| } |
| |
| |
| /* Last sector */ |
| dflt_l = find_last_free(gpt, user_f); |
| |
| if (pa && pa->end_follow_default) { |
| user_l = dflt_l; |
| |
| } else if (pa && fdisk_partition_has_size(pa)) { |
| user_l = user_f + pa->size - 1; |
| DBG(LABEL, ul_debug("size defined: %ju, end: %"PRIu64" (last possible: %"PRIu64")", |
| (uintmax_t)pa->size, user_l, dflt_l)); |
| |
| if (user_l != dflt_l |
| && !pa->size_explicit |
| && alignment_required(cxt) |
| && user_l - user_f > (cxt->grain / fdisk_get_sector_size(cxt))) { |
| |
| user_l = fdisk_align_lba_in_range(cxt, user_l, user_f, dflt_l); |
| if (user_l > user_f) |
| user_l -= 1ULL; |
| } |
| } else { |
| for (;;) { |
| if (!ask) |
| ask = fdisk_new_ask(); |
| else |
| fdisk_reset_ask(ask); |
| if (!ask) |
| return -ENOMEM; |
| |
| fdisk_ask_set_query(ask, _("Last sector, +sectors or +size{K,M,G,T,P}")); |
| fdisk_ask_set_type(ask, FDISK_ASKTYPE_OFFSET); |
| fdisk_ask_number_set_low(ask, user_f); /* minimal */ |
| fdisk_ask_number_set_default(ask, dflt_l); /* default */ |
| fdisk_ask_number_set_high(ask, dflt_l); /* maximal */ |
| fdisk_ask_number_set_base(ask, user_f); /* base for relative input */ |
| fdisk_ask_number_set_unit(ask, cxt->sector_size); |
| |
| rc = fdisk_do_ask(cxt, ask); |
| if (rc) |
| goto done; |
| |
| user_l = fdisk_ask_number_get_result(ask); |
| if (fdisk_ask_number_is_relative(ask)) { |
| user_l = fdisk_align_lba_in_range(cxt, user_l, user_f, dflt_l); |
| if (user_l > user_f) |
| user_l -= 1ULL; |
| } |
| |
| if (user_l >= user_f && user_l <= disk_l) |
| break; |
| |
| fdisk_warnx(cxt, _("Value out of range.")); |
| } |
| } |
| |
| |
| if (user_f > user_l || partnum >= cxt->label->nparts_max) { |
| fdisk_warnx(cxt, _("Could not create partition %zu"), partnum + 1); |
| rc = -EINVAL; |
| goto done; |
| } |
| |
| /* Be paranoid and check against on-disk setting rather than against libfdisk cxt */ |
| if (user_l > le64_to_cpu(pheader->last_usable_lba)) { |
| fdisk_warnx(cxt, _("The last usable GPT sector is %ju, but %ju is requested."), |
| le64_to_cpu(pheader->last_usable_lba), user_l); |
| rc = -EINVAL; |
| goto done; |
| } |
| |
| if (user_f < le64_to_cpu(pheader->first_usable_lba)) { |
| fdisk_warnx(cxt, _("The first usable GPT sector is %ju, but %ju is requested."), |
| le64_to_cpu(pheader->first_usable_lba), user_f); |
| rc = -EINVAL; |
| goto done; |
| } |
| |
| assert(!FDISK_IS_UNDEF(user_l)); |
| assert(!FDISK_IS_UNDEF(user_f)); |
| assert(partnum < gpt_get_nentries(gpt)); |
| |
| e = gpt_get_entry(gpt, partnum); |
| e->lba_end = cpu_to_le64(user_l); |
| e->lba_start = cpu_to_le64(user_f); |
| |
| gpt_entry_set_type(e, &typeid); |
| |
| if (pa && pa->uuid) { |
| /* Sometimes it's necessary to create a copy of the PT and |
| * reuse already defined UUID |
| */ |
| rc = gpt_entry_set_uuid(e, pa->uuid); |
| if (rc) |
| goto done; |
| } else { |
| /* Any time a new partition entry is created a new GUID must be |
| * generated for that partition, and every partition is guaranteed |
| * to have a unique GUID. |
| */ |
| struct gpt_guid guid; |
| |
| uuid_generate_random((unsigned char *) &e->partition_guid); |
| guid = e->partition_guid; |
| swap_efi_guid(&guid); |
| } |
| |
| if (pa && pa->name && *pa->name) |
| gpt_entry_set_name(e, pa->name); |
| if (pa && pa->attrs) |
| gpt_entry_attrs_from_string(cxt, e, pa->attrs); |
| |
| DBG(LABEL, ul_debug("GPT new partition: partno=%zu, start=%"PRIu64", end=%"PRIu64", size=%"PRIu64"", |
| partnum, |
| gpt_partition_start(e), |
| gpt_partition_end(e), |
| gpt_partition_size(e))); |
| |
| gpt_recompute_crc(gpt->pheader, gpt->ents); |
| gpt_recompute_crc(gpt->bheader, gpt->ents); |
| |
| /* report result */ |
| { |
| struct fdisk_parttype *t; |
| |
| cxt->label->nparts_cur++; |
| fdisk_label_set_changed(cxt->label, 1); |
| |
| t = gpt_partition_parttype(cxt, e); |
| fdisk_info_new_partition(cxt, partnum + 1, user_f, user_l, t); |
| fdisk_unref_parttype(t); |
| } |
| |
| rc = 0; |
| if (partno) |
| *partno = partnum; |
| done: |
| fdisk_unref_ask(ask); |
| return rc; |
| } |
| |
| /* |
| * Create a new GPT disklabel - destroys any previous data. |
| */ |
| static int gpt_create_disklabel(struct fdisk_context *cxt) |
| { |
| int rc = 0; |
| size_t esz = 0; |
| char str[UUID_STR_LEN]; |
| struct fdisk_gpt_label *gpt; |
| struct gpt_guid guid; |
| |
| assert(cxt); |
| assert(cxt->label); |
| assert(fdisk_is_label(cxt, GPT)); |
| |
| gpt = self_label(cxt); |
| |
| /* label private stuff has to be empty, see gpt_deinit() */ |
| assert(gpt->pheader == NULL); |
| assert(gpt->bheader == NULL); |
| |
| /* |
| * When no header, entries or pmbr is set, we're probably |
| * dealing with a new, empty disk - so always allocate memory |
| * to deal with the data structures whatever the case is. |
| */ |
| rc = gpt_mknew_pmbr(cxt); |
| if (rc < 0) |
| goto done; |
| |
| assert(cxt->sector_size >= sizeof(struct gpt_header)); |
| |
| /* primary */ |
| gpt->pheader = calloc(1, cxt->sector_size); |
| if (!gpt->pheader) { |
| rc = -ENOMEM; |
| goto done; |
| } |
| rc = gpt_mknew_header(cxt, gpt->pheader, GPT_PRIMARY_PARTITION_TABLE_LBA); |
| if (rc < 0) |
| goto done; |
| |
| /* backup ("copy" primary) */ |
| gpt->bheader = calloc(1, cxt->sector_size); |
| if (!gpt->bheader) { |
| rc = -ENOMEM; |
| goto done; |
| } |
| rc = gpt_mknew_header_from_bkp(cxt, gpt->bheader, |
| last_lba(cxt), gpt->pheader); |
| if (rc < 0) |
| goto done; |
| |
| rc = gpt_sizeof_ents(gpt->pheader, &esz); |
| if (rc) |
| goto done; |
| gpt->ents = calloc(1, esz); |
| if (!gpt->ents) { |
| rc = -ENOMEM; |
| goto done; |
| } |
| gpt_recompute_crc(gpt->pheader, gpt->ents); |
| gpt_recompute_crc(gpt->bheader, gpt->ents); |
| |
| cxt->label->nparts_max = gpt_get_nentries(gpt); |
| cxt->label->nparts_cur = 0; |
| |
| guid = gpt->pheader->disk_guid; |
| guid_to_string(&guid, str); |
| fdisk_label_set_changed(cxt->label, 1); |
| fdisk_info(cxt, _("Created a new GPT disklabel (GUID: %s)."), str); |
| done: |
| return rc; |
| } |
| |
| static int gpt_set_disklabel_id(struct fdisk_context *cxt) |
| { |
| struct fdisk_gpt_label *gpt; |
| struct gpt_guid uuid; |
| char *str, *old, *new; |
| int rc; |
| |
| assert(cxt); |
| assert(cxt->label); |
| assert(fdisk_is_label(cxt, GPT)); |
| |
| gpt = self_label(cxt); |
| if (fdisk_ask_string(cxt, |
| _("Enter new disk UUID (in 8-4-4-4-12 format)"), &str)) |
| return -EINVAL; |
| |
| rc = string_to_guid(str, &uuid); |
| free(str); |
| |
| if (rc) { |
| fdisk_warnx(cxt, _("Failed to parse your UUID.")); |
| return rc; |
| } |
| |
| old = gpt_get_header_id(gpt->pheader); |
| |
| gpt->pheader->disk_guid = uuid; |
| gpt->bheader->disk_guid = uuid; |
| |
| gpt_recompute_crc(gpt->pheader, gpt->ents); |
| gpt_recompute_crc(gpt->bheader, gpt->ents); |
| |
| new = gpt_get_header_id(gpt->pheader); |
| |
| fdisk_info(cxt, _("Disk identifier changed from %s to %s."), old, new); |
| |
| free(old); |
| free(new); |
| fdisk_label_set_changed(cxt->label, 1); |
| return 0; |
| } |
| |
| static int gpt_check_table_overlap(struct fdisk_context *cxt, |
| uint64_t first_usable, |
| uint64_t last_usable) |
| { |
| struct fdisk_gpt_label *gpt = self_label(cxt); |
| size_t i; |
| int rc = 0; |
| |
| /* First check if there's enough room for the table. last_lba may have wrapped */ |
| if (first_usable > cxt->total_sectors || /* far too little space */ |
| last_usable > cxt->total_sectors || /* wrapped */ |
| first_usable > last_usable) { /* too little space */ |
| fdisk_warnx(cxt, _("Not enough space for new partition table!")); |
| return -ENOSPC; |
| } |
| |
| /* check that all partitions fit in the remaining space */ |
| for (i = 0; i < gpt_get_nentries(gpt); i++) { |
| struct gpt_entry *e = gpt_get_entry(gpt, i); |
| |
| if (!gpt_entry_is_used(e)) |
| continue; |
| if (gpt_partition_start(e) < first_usable) { |
| fdisk_warnx(cxt, _("Partition #%zu out of range (minimal start is %"PRIu64" sectors)"), |
| i + 1, first_usable); |
| rc = -EINVAL; |
| } |
| if (gpt_partition_end(e) > last_usable) { |
| fdisk_warnx(cxt, _("Partition #%zu out of range (maximal end is %"PRIu64" sectors)"), |
| i + 1, last_usable - 1ULL); |
| rc = -EINVAL; |
| } |
| } |
| return rc; |
| } |
| |
| /** |
| * fdisk_gpt_set_npartitions: |
| * @cxt: context |
| * @entries: new size |
| * |
| * Elarge GPT entries array if possible. The function check if an existing |
| * partition does not overlap the entries array area. If yes, then it report |
| * warning and returns -EINVAL. |
| * |
| * Returns: 0 on success, < 0 on error. |
| * Since: 2.29 |
| */ |
| int fdisk_gpt_set_npartitions(struct fdisk_context *cxt, uint32_t entries) |
| { |
| struct fdisk_gpt_label *gpt; |
| size_t old_size, new_size; |
| uint32_t old; |
| uint64_t first_usable, last_usable; |
| int rc; |
| |
| assert(cxt); |
| assert(cxt->label); |
| |
| if (!fdisk_is_label(cxt, GPT)) |
| return -EINVAL; |
| |
| gpt = self_label(cxt); |
| |
| old = le32_to_cpu(gpt->pheader->npartition_entries); |
| if (old == entries) |
| return 0; /* do nothing, say nothing */ |
| |
| /* calculate the size (bytes) of the entries array */ |
| rc = gpt_calculate_sizeof_ents(gpt->pheader, entries, &new_size); |
| if (rc) { |
| fdisk_warnx(cxt, _("The number of the partition has to be smaller than %zu."), |
| UINT32_MAX / le32_to_cpu(gpt->pheader->sizeof_partition_entry)); |
| return rc; |
| } |
| |
| rc = gpt_calculate_sizeof_ents(gpt->pheader, old, &old_size); |
| if (rc) |
| return rc; |
| |
| /* calculate new range of usable LBAs */ |
| first_usable = (uint64_t) (new_size / cxt->sector_size) + 2ULL; |
| last_usable = cxt->total_sectors - 2ULL - (uint64_t) (new_size / cxt->sector_size); |
| |
| /* if expanding the table, first check that everything fits, |
| * then allocate more memory and zero. */ |
| if (entries > old) { |
| unsigned char *ents; |
| |
| rc = gpt_check_table_overlap(cxt, first_usable, last_usable); |
| if (rc) |
| return rc; |
| ents = realloc(gpt->ents, new_size); |
| if (!ents) { |
| fdisk_warnx(cxt, _("Cannot allocate memory!")); |
| return -ENOMEM; |
| } |
| memset(ents + old_size, 0, new_size - old_size); |
| gpt->ents = ents; |
| } |
| |
| /* everything's ok, apply the new size */ |
| gpt->pheader->npartition_entries = cpu_to_le32(entries); |
| gpt->bheader->npartition_entries = cpu_to_le32(entries); |
| |
| /* usable LBA addresses will have changed */ |
| fdisk_set_first_lba(cxt, first_usable); |
| fdisk_set_last_lba(cxt, last_usable); |
| gpt->pheader->first_usable_lba = cpu_to_le64(first_usable); |
| gpt->bheader->first_usable_lba = cpu_to_le64(first_usable); |
| gpt->pheader->last_usable_lba = cpu_to_le64(last_usable); |
| gpt->bheader->last_usable_lba = cpu_to_le64(last_usable); |
| |
| |
| /* The backup header must be recalculated */ |
| gpt_mknew_header_common(cxt, gpt->bheader, le64_to_cpu(gpt->pheader->alternative_lba)); |
| |
| /* CRCs will have changed */ |
| gpt_recompute_crc(gpt->pheader, gpt->ents); |
| gpt_recompute_crc(gpt->bheader, gpt->ents); |
| |
| /* update library info */ |
| cxt->label->nparts_max = gpt_get_nentries(gpt); |
| |
| fdisk_info(cxt, _("Partition table length changed from %"PRIu32" to %"PRIu64"."), old, entries); |
| |
| fdisk_label_set_changed(cxt->label, 1); |
| return 0; |
| } |
| |
| static int gpt_part_is_used(struct fdisk_context *cxt, size_t i) |
| { |
| struct fdisk_gpt_label *gpt; |
| struct gpt_entry *e; |
| |
| assert(cxt); |
| assert(cxt->label); |
| assert(fdisk_is_label(cxt, GPT)); |
| |
| gpt = self_label(cxt); |
| |
| if (i >= gpt_get_nentries(gpt)) |
| return 0; |
| |
| e = gpt_get_entry(gpt, i); |
| |
| return gpt_entry_is_used(e) || gpt_partition_start(e); |
| } |
| |
| /** |
| * fdisk_gpt_is_hybrid: |
| * @cxt: context |
| * |
| * The regular GPT contains PMBR (dummy protective MBR) where the protective |
| * MBR does not address any partitions. |
| * |
| * Hybrid GPT contains regular MBR where this partition table addresses the |
| * same partitions as GPT. It's recommended to not use hybrid GPT due to MBR |
| * limits. |
| * |
| * The libfdisk does not provide functionality to sync GPT and MBR, you have to |
| * directly access and modify (P)MBR (see fdisk_new_nested_context()). |
| * |
| * Returns: 1 if partition table detected as hybrid otherwise return 0 |
| */ |
| int fdisk_gpt_is_hybrid(struct fdisk_context *cxt) |
| { |
| assert(cxt); |
| return valid_pmbr(cxt) == GPT_MBR_HYBRID; |
| } |
| |
| /** |
| * fdisk_gpt_get_partition_attrs: |
| * @cxt: context |
| * @partnum: partition number |
| * @attrs: GPT partition attributes |
| * |
| * Sets @attrs for the given partition |
| * |
| * Returns: 0 on success, <0 on error. |
| */ |
| int fdisk_gpt_get_partition_attrs( |
| struct fdisk_context *cxt, |
| size_t partnum, |
| uint64_t *attrs) |
| { |
| struct fdisk_gpt_label *gpt; |
| |
| assert(cxt); |
| assert(cxt->label); |
| |
| if (!fdisk_is_label(cxt, GPT)) |
| return -EINVAL; |
| |
| gpt = self_label(cxt); |
| |
| if (partnum >= gpt_get_nentries(gpt)) |
| return -EINVAL; |
| |
| *attrs = le64_to_cpu(gpt_get_entry(gpt, partnum)->attrs); |
| return 0; |
| } |
| |
| /** |
| * fdisk_gpt_set_partition_attrs: |
| * @cxt: context |
| * @partnum: partition number |
| * @attrs: GPT partition attributes |
| * |
| * Sets the GPT partition attributes field to @attrs. |
| * |
| * Returns: 0 on success, <0 on error. |
| */ |
| int fdisk_gpt_set_partition_attrs( |
| struct fdisk_context *cxt, |
| size_t partnum, |
| uint64_t attrs) |
| { |
| struct fdisk_gpt_label *gpt; |
| |
| assert(cxt); |
| assert(cxt->label); |
| |
| if (!fdisk_is_label(cxt, GPT)) |
| return -EINVAL; |
| |
| DBG(LABEL, ul_debug("GPT entry attributes change requested partno=%zu", partnum)); |
| gpt = self_label(cxt); |
| |
| if (partnum >= gpt_get_nentries(gpt)) |
| return -EINVAL; |
| |
| gpt_get_entry(gpt, partnum)->attrs = cpu_to_le64(attrs); |
| fdisk_info(cxt, _("The attributes on partition %zu changed to 0x%016" PRIx64 "."), |
| partnum + 1, attrs); |
| |
| gpt_recompute_crc(gpt->pheader, gpt->ents); |
| gpt_recompute_crc(gpt->bheader, gpt->ents); |
| fdisk_label_set_changed(cxt->label, 1); |
| return 0; |
| } |
| |
| static int gpt_toggle_partition_flag( |
| struct fdisk_context *cxt, |
| size_t i, |
| unsigned long flag) |
| { |
| struct fdisk_gpt_label *gpt; |
| struct gpt_entry *e; |
| uint64_t attrs; |
| uintmax_t tmp; |
| char *bits; |
| const char *name = NULL; |
| int bit = -1, rc; |
| |
| assert(cxt); |
| assert(cxt->label); |
| assert(fdisk_is_label(cxt, GPT)); |
| |
| DBG(LABEL, ul_debug("GPT entry attribute change requested partno=%zu", i)); |
| gpt = self_label(cxt); |
| |
| if (i >= gpt_get_nentries(gpt)) |
| return -EINVAL; |
| |
| e = gpt_get_entry(gpt, i); |
| attrs = e->attrs; |
| bits = (char *) &attrs; |
| |
| switch (flag) { |
| case GPT_FLAG_REQUIRED: |
| bit = GPT_ATTRBIT_REQ; |
| name = GPT_ATTRSTR_REQ; |
| break; |
| case GPT_FLAG_NOBLOCK: |
| bit = GPT_ATTRBIT_NOBLOCK; |
| name = GPT_ATTRSTR_NOBLOCK; |
| break; |
| case GPT_FLAG_LEGACYBOOT: |
| bit = GPT_ATTRBIT_LEGACY; |
| name = GPT_ATTRSTR_LEGACY; |
| break; |
| case GPT_FLAG_GUIDSPECIFIC: |
| rc = fdisk_ask_number(cxt, 48, 48, 63, _("Enter GUID specific bit"), &tmp); |
| if (rc) |
| return rc; |
| bit = tmp; |
| break; |
| default: |
| /* already specified PT_FLAG_GUIDSPECIFIC bit */ |
| if (flag >= 48 && flag <= 63) { |
| bit = flag; |
| flag = GPT_FLAG_GUIDSPECIFIC; |
| } |
| break; |
| } |
| |
| if (bit < 0) { |
| fdisk_warnx(cxt, _("failed to toggle unsupported bit %lu"), flag); |
| return -EINVAL; |
| } |
| |
| if (!isset(bits, bit)) |
| setbit(bits, bit); |
| else |
| clrbit(bits, bit); |
| |
| e->attrs = attrs; |
| |
| if (flag == GPT_FLAG_GUIDSPECIFIC) |
| fdisk_info(cxt, isset(bits, bit) ? |
| _("The GUID specific bit %d on partition %zu is enabled now.") : |
| _("The GUID specific bit %d on partition %zu is disabled now."), |
| bit, i + 1); |
| else |
| fdisk_info(cxt, isset(bits, bit) ? |
| _("The %s flag on partition %zu is enabled now.") : |
| _("The %s flag on partition %zu is disabled now."), |
| name, i + 1); |
| |
| gpt_recompute_crc(gpt->pheader, gpt->ents); |
| gpt_recompute_crc(gpt->bheader, gpt->ents); |
| fdisk_label_set_changed(cxt->label, 1); |
| return 0; |
| } |
| |
| static int gpt_entry_cmp_start(const void *a, const void *b) |
| { |
| struct gpt_entry *ae = (struct gpt_entry *) a, |
| *be = (struct gpt_entry *) b; |
| int au = gpt_entry_is_used(ae), |
| bu = gpt_entry_is_used(be); |
| |
| if (!au && !bu) |
| return 0; |
| if (!au) |
| return 1; |
| if (!bu) |
| return -1; |
| |
| return cmp_numbers(gpt_partition_start(ae), gpt_partition_start(be)); |
| } |
| |
| /* sort partition by start sector */ |
| static int gpt_reorder(struct fdisk_context *cxt) |
| { |
| struct fdisk_gpt_label *gpt; |
| size_t i, nparts, mess; |
| |
| assert(cxt); |
| assert(cxt->label); |
| assert(fdisk_is_label(cxt, GPT)); |
| |
| gpt = self_label(cxt); |
| nparts = gpt_get_nentries(gpt); |
| |
| for (i = 0, mess = 0; mess == 0 && i + 1 < nparts; i++) |
| mess = gpt_entry_cmp_start( |
| (const void *) gpt_get_entry(gpt, i), |
| (const void *) gpt_get_entry(gpt, i + 1)) > 0; |
| |
| if (!mess) { |
| fdisk_info(cxt, _("Nothing to do. Ordering is correct already.")); |
| return 1; |
| } |
| |
| qsort(gpt->ents, nparts, sizeof(struct gpt_entry), |
| gpt_entry_cmp_start); |
| |
| gpt_recompute_crc(gpt->pheader, gpt->ents); |
| gpt_recompute_crc(gpt->bheader, gpt->ents); |
| fdisk_label_set_changed(cxt->label, 1); |
| |
| return 0; |
| } |
| |
| static int gpt_reset_alignment(struct fdisk_context *cxt) |
| { |
| struct fdisk_gpt_label *gpt; |
| struct gpt_header *h; |
| |
| assert(cxt); |
| assert(cxt->label); |
| assert(fdisk_is_label(cxt, GPT)); |
| |
| gpt = self_label(cxt); |
| h = gpt ? gpt->pheader : NULL; |
| |
| if (h) { |
| /* always follow existing table */ |
| cxt->first_lba = le64_to_cpu(h->first_usable_lba); |
| cxt->last_lba = le64_to_cpu(h->last_usable_lba); |
| } else { |
| /* estimate ranges for GPT */ |
| uint64_t first, last; |
| |
| count_first_last_lba(cxt, &first, &last); |
| |
| if (cxt->first_lba < first) |
| cxt->first_lba = first; |
| if (cxt->last_lba > last) |
| cxt->last_lba = last; |
| } |
| |
| return 0; |
| } |
| /* |
| * Deinitialize fdisk-specific variables |
| */ |
| static void gpt_deinit(struct fdisk_label *lb) |
| { |
| struct fdisk_gpt_label *gpt = (struct fdisk_gpt_label *) lb; |
| |
| if (!gpt) |
| return; |
| |
| free(gpt->ents); |
| free(gpt->pheader); |
| free(gpt->bheader); |
| |
| gpt->ents = NULL; |
| gpt->pheader = NULL; |
| gpt->bheader = NULL; |
| } |
| |
| static const struct fdisk_label_operations gpt_operations = |
| { |
| .probe = gpt_probe_label, |
| .write = gpt_write_disklabel, |
| .verify = gpt_verify_disklabel, |
| .create = gpt_create_disklabel, |
| .locate = gpt_locate_disklabel, |
| .get_item = gpt_get_disklabel_item, |
| .set_id = gpt_set_disklabel_id, |
| |
| .get_part = gpt_get_partition, |
| .set_part = gpt_set_partition, |
| .add_part = gpt_add_partition, |
| .del_part = gpt_delete_partition, |
| .reorder = gpt_reorder, |
| |
| .part_is_used = gpt_part_is_used, |
| .part_toggle_flag = gpt_toggle_partition_flag, |
| |
| .deinit = gpt_deinit, |
| |
| .reset_alignment = gpt_reset_alignment |
| }; |
| |
| static const struct fdisk_field gpt_fields[] = |
| { |
| /* basic */ |
| { FDISK_FIELD_DEVICE, N_("Device"), 10, 0 }, |
| { FDISK_FIELD_START, N_("Start"), 5, FDISK_FIELDFL_NUMBER }, |
| { FDISK_FIELD_END, N_("End"), 5, FDISK_FIELDFL_NUMBER }, |
| { FDISK_FIELD_SECTORS, N_("Sectors"), 5, FDISK_FIELDFL_NUMBER }, |
| { FDISK_FIELD_SIZE, N_("Size"), 5, FDISK_FIELDFL_NUMBER | FDISK_FIELDFL_EYECANDY }, |
| { FDISK_FIELD_TYPE, N_("Type"), 0.1, FDISK_FIELDFL_EYECANDY }, |
| /* expert */ |
| { FDISK_FIELD_TYPEID, N_("Type-UUID"), 36, FDISK_FIELDFL_DETAIL }, |
| { FDISK_FIELD_UUID, N_("UUID"), 36, FDISK_FIELDFL_DETAIL }, |
| { FDISK_FIELD_NAME, N_("Name"), 0.2, FDISK_FIELDFL_DETAIL }, |
| { FDISK_FIELD_ATTR, N_("Attrs"), 0, FDISK_FIELDFL_DETAIL } |
| }; |
| |
| /* |
| * allocates GPT in-memory stuff |
| */ |
| struct fdisk_label *fdisk_new_gpt_label(struct fdisk_context *cxt __attribute__ ((__unused__))) |
| { |
| struct fdisk_label *lb; |
| struct fdisk_gpt_label *gpt; |
| |
| gpt = calloc(1, sizeof(*gpt)); |
| if (!gpt) |
| return NULL; |
| |
| /* initialize generic part of the driver */ |
| lb = (struct fdisk_label *) gpt; |
| lb->name = "gpt"; |
| lb->id = FDISK_DISKLABEL_GPT; |
| lb->op = &gpt_operations; |
| lb->parttypes = gpt_parttypes; |
| lb->nparttypes = ARRAY_SIZE(gpt_parttypes); |
| |
| lb->fields = gpt_fields; |
| lb->nfields = ARRAY_SIZE(gpt_fields); |
| |
| return lb; |
| } |
| |
| #ifdef TEST_PROGRAM |
| static int test_getattr(struct fdisk_test *ts, int argc, char *argv[]) |
| { |
| const char *disk = argv[1]; |
| size_t part = strtoul(argv[2], NULL, 0) - 1; |
| struct fdisk_context *cxt; |
| uint64_t atters = 0; |
| |
| cxt = fdisk_new_context(); |
| fdisk_assign_device(cxt, disk, 1); |
| |
| if (!fdisk_is_label(cxt, GPT)) |
| return EXIT_FAILURE; |
| |
| if (fdisk_gpt_get_partition_attrs(cxt, part, &atters)) |
| return EXIT_FAILURE; |
| |
| printf("%s: 0x%016" PRIx64 "\n", argv[2], atters); |
| |
| fdisk_unref_context(cxt); |
| return 0; |
| } |
| |
| static int test_setattr(struct fdisk_test *ts, int argc, char *argv[]) |
| { |
| const char *disk = argv[1]; |
| size_t part = strtoul(argv[2], NULL, 0) - 1; |
| uint64_t atters = strtoull(argv[3], NULL, 0); |
| struct fdisk_context *cxt; |
| |
| cxt = fdisk_new_context(); |
| fdisk_assign_device(cxt, disk, 0); |
| |
| if (!fdisk_is_label(cxt, GPT)) |
| return EXIT_FAILURE; |
| |
| if (fdisk_gpt_set_partition_attrs(cxt, part, atters)) |
| return EXIT_FAILURE; |
| |
| if (fdisk_write_disklabel(cxt)) |
| return EXIT_FAILURE; |
| |
| fdisk_unref_context(cxt); |
| return 0; |
| } |
| |
| int main(int argc, char *argv[]) |
| { |
| struct fdisk_test tss[] = { |
| { "--getattr", test_getattr, "<disk> <partition> print attributes" }, |
| { "--setattr", test_setattr, "<disk> <partition> <value> set attributes" }, |
| { NULL } |
| }; |
| |
| return fdisk_run_test(tss, argc, argv); |
| } |
| |
| #endif |