#include "fdiskP.h"
-#include "nls.h"
#include "crc32.h"
#include "blkdev.h"
#include "bitops.h"
#define GPT_MBR_PROTECTIVE 1
#define GPT_MBR_HYBRID 2
-#define GPT_PRIMARY_PARTITION_TABLE_LBA 0x00000001
+#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 128
+#define GPT_NPARTITIONS FDISK_GPT_NPARTITIONS_DEFAULT
/* Globally unique identifier */
struct gpt_guid {
GPT_ATTRBIT_GUID_COUNT = 16
};
-#define GPT_ATTRSTR_REQ "RequiredPartiton"
+#define GPT_ATTRSTR_REQ "RequiredPartition"
+#define GPT_ATTRSTR_REQ_TYPO "RequiredPartiton"
#define GPT_ATTRSTR_NOBLOCK "NoBlockIOProtocol"
#define GPT_ATTRSTR_LEGACY "LegacyBIOSBootable"
.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 */
/* 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("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("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-237C-11E1-B4B3-E89A8F7FC3A7", N_("MidnightBSD UFS")),
+ 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")),
+
+ /* 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"))
};
/* gpt_entry macros */
/* gpt specific part */
struct gpt_header *pheader; /* primary header */
struct gpt_header *bheader; /* backup header */
- struct gpt_entry *ents; /* entries (partitions) */
+
+ unsigned char *ents; /* entries (partitions) */
};
static void gpt_deinit(struct fdisk_label *lb);
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)
{
return "unknown";
}
-static inline int partition_unused(const struct gpt_entry *e)
+static inline unsigned char *gpt_get_entry_ptr(struct fdisk_gpt_label *gpt, size_t i)
{
- return !memcmp(&e->type, &GPT_UNUSED_ENTRY_GUID,
- sizeof(struct gpt_guid));
+ 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[37];
+
+ guid_to_string(&header->disk_guid, str);
+
+ return strdup(str);
}
/*
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(min((uint32_t) cxt->total_sectors - 1, 0xFFFFFFFF));
+ cpu_to_le32((uint32_t) min( cxt->total_sectors - 1ULL, 0xFFFFFFFFULL) );
return 0;
}
header->my_lba = cpu_to_le64(lba);
if (lba == GPT_PRIMARY_PARTITION_TABLE_LBA) { /* primary */
- header->alternative_lba = cpu_to_le64(cxt->total_sectors - 1);
- header->partition_entry_lba = cpu_to_le64(2);
+ header->alternative_lba = cpu_to_le64(cxt->total_sectors - 1ULL);
+ header->partition_entry_lba = cpu_to_le64(2ULL);
} else { /* backup */
- uint64_t esz = le32_to_cpu(header->npartition_entries) * sizeof(struct gpt_entry);
+ 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 - 1 - esects);
+ header->partition_entry_lba = cpu_to_le64(cxt->total_sectors - 1ULL - esects);
}
}
if (res->my_lba == GPT_PRIMARY_PARTITION_TABLE_LBA)
- res->partition_entry_lba = cpu_to_le64(2);
+ res->partition_entry_lba = cpu_to_le64(2ULL);
else {
- uint64_t esz = le32_to_cpu(src->npartition_entries) * sizeof(struct gpt_entry);
+ 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 - 1 - esects);
+ res->partition_entry_lba = cpu_to_le64(cxt->total_sectors - 1ULL - esects);
}
return res;
/* UEFI default */
esz = sizeof(struct gpt_entry) * GPT_NPARTITIONS / cxt->sector_size;
- llba = cxt->total_sectors - 2 - esz;
- flba = esz + 2;
+ llba = cxt->total_sectors - 2ULL - esz;
+ flba = esz + 2ULL;
/* script default */
if (cxt->script) {
if (rc < 0)
return rc;
- DBG(LABEL, ul_debug("FirstLBA: script=%ju, uefi=%ju, topology=%ju.", *first, flba, cxt->first_lba));
+ 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."));
if (rc < 0)
return rc;
- DBG(LABEL, ul_debug("LastLBA: script=%ju, uefi=%ju, topology=%ju.", *last, llba, cxt->last_lba));
+ 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."));
/* 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 zerozied area.
+ * 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)
/*
* 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, depeding on the detection.
+ * 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;
- uint32_t sz_lba = 0;
if (!cxt->firstsector)
goto done;
if (le16_to_cpu(pmbr->signature) != MSDOS_MBR_SIGNATURE)
goto done;
- /* LBA of the GPT partition header */
- if (pmbr->partition_record[0].starting_lba !=
- cpu_to_le32(GPT_PRIMARY_PARTITION_TABLE_LBA))
- 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) {
*/
part = i;
ret = GPT_MBR_PROTECTIVE;
- goto check_hybrid;
+ break;
}
}
if (ret != GPT_MBR_PROTECTIVE)
goto done;
-check_hybrid:
+
+ /* 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))
* an image from a smaller disk to a bigger disk.
*/
if (ret == GPT_MBR_PROTECTIVE) {
- sz_lba = le32_to_cpu(pmbr->partition_record[part].size_in_lba);
- if (sz_lba != (uint32_t) cxt->total_sectors - 1 && sz_lba != 0xFFFFFFFF) {
- fdisk_warnx(cxt, _("GPT PMBR size mismatch (%u != %u) "
+ 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 w(rite)."),
- sz_lba,
- (uint32_t) cxt->total_sectors - 1);
+ sz_lba, cxt->total_sectors - 1ULL);
fdisk_label_set_changed(cxt->label, 1);
}
}
}
if (S_ISBLK(s.st_mode))
- sectors = cxt->total_sectors - 1;
+ 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: %ju", sectors));
+ DBG(LABEL, ul_debug("GPT last LBA: %"PRIu64"", sectors));
return sectors;
}
if (lseek(cxt->dev_fd, offset, SEEK_SET) == (off_t) -1)
return -1;
- return read(cxt->dev_fd, buffer, bytes) != bytes;
+ return (size_t)read(cxt->dev_fd, buffer, bytes) != bytes;
}
/* Returns the GPT entry array */
-static struct gpt_entry *gpt_read_entries(struct fdisk_context *cxt,
+static unsigned char *gpt_read_entries(struct fdisk_context *cxt,
struct gpt_header *header)
{
- ssize_t sz;
- struct gpt_entry *ret = NULL;
+ size_t sz;
+ ssize_t ssz;
+
+ unsigned char *ret = NULL;
off_t offset;
assert(cxt);
assert(header);
- sz = le32_to_cpu(header->npartition_entries) *
- le32_to_cpu(header->sizeof_partition_entry);
+ 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 = le64_to_cpu(header->partition_entry_lba) *
+
+ offset = (off_t) le64_to_cpu(header->partition_entry_lba) *
cxt->sector_size;
if (offset != lseek(cxt->dev_fd, offset, SEEK_SET))
goto fail;
- if (sz != read(cxt->dev_fd, ret, sz))
+
+ ssz = read(cxt->dev_fd, ret, sz);
+ if (ssz < 0 || (size_t) ssz != sz)
goto fail;
return ret;
return NULL;
}
-static inline uint32_t count_crc32(const unsigned char *buf, size_t len)
+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 (crc32(~0L, buf, len) ^ ~0L);
+ 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 checksuming it again (ie: probing or verify).
+ * will be reported when checksumming it again (ie: probing or verify).
*/
-static void gpt_recompute_crc(struct gpt_header *header, struct gpt_entry *ents)
+static void gpt_recompute_crc(struct gpt_header *header, unsigned char *ents)
{
- uint32_t crc = 0;
- size_t entry_sz = 0;
-
if (!header)
return;
- /* header CRC */
- header->crc32 = 0;
- crc = count_crc32((unsigned char *) header, le32_to_cpu(header->size));
- header->crc32 = cpu_to_le32(crc);
-
- /* partition entry array CRC */
- header->partition_entry_array_crc32 = 0;
- entry_sz = le32_to_cpu(header->npartition_entries) *
- le32_to_cpu(header->sizeof_partition_entry);
+ header->partition_entry_array_crc32 =
+ cpu_to_le32( gpt_entryarr_count_crc32(header, ents) );
- crc = count_crc32((unsigned char *) ents, entry_sz);
- header->partition_entry_array_crc32 = cpu_to_le32(crc);
+ 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, struct gpt_entry *ents)
+static int gpt_check_header_crc(struct gpt_header *header, unsigned char *ents)
{
- uint32_t crc, orgcrc = le32_to_cpu(header->crc32);
-
- header->crc32 = 0;
- crc = count_crc32((unsigned char *) header, le32_to_cpu(header->size));
- header->crc32 = cpu_to_le32(orgcrc);
+ uint32_t orgcrc = le32_to_cpu(header->crc32),
+ crc = gpt_header_count_crc32(header);
- if (crc == le32_to_cpu(header->crc32))
+ 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 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);
- orgcrc = le32_to_cpu(header->crc32);
- header->crc32 = 0;
- crc = count_crc32((unsigned char *) header, le32_to_cpu(header->size));
- header->crc32 = cpu_to_le32(orgcrc);
-
- return crc == le32_to_cpu(header->crc32);
+ 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,
- struct gpt_entry *ents)
+static int gpt_check_entryarr_crc(struct gpt_header *header, unsigned char *ents)
{
- int ret = 0;
- ssize_t entry_sz;
- uint32_t crc;
-
if (!header || !ents)
- goto done;
-
- entry_sz = le32_to_cpu(header->npartition_entries) *
- le32_to_cpu(header->sizeof_partition_entry);
-
- if (!entry_sz)
- goto done;
+ return 0;
- crc = count_crc32((unsigned char *) ents, entry_sz);
- ret = (crc == le32_to_cpu(header->partition_entry_array_crc32));
-done:
- return ret;
+ 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)
*/
static struct gpt_header *gpt_read_header(struct fdisk_context *cxt,
uint64_t lba,
- struct gpt_entry **_ents)
+ unsigned char **_ents)
{
struct gpt_header *header = NULL;
- struct gpt_entry *ents = NULL;
+ unsigned char *ents = NULL;
uint32_t hsz;
if (!cxt)
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 %ju", lba));
+ 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 %ju failed", lba));
+ DBG(LABEL, ul_debug("read GPT Header on LBA %"PRIu64" failed", lba));
return NULL;
}
case 2:
*name = _("GPT Entries");
gpt = self_label(cxt);
- *offset = le64_to_cpu(gpt->pheader->partition_entry_lba) * cxt->sector_size;
- *size = le32_to_cpu(gpt->pheader->npartition_entries) *
- le32_to_cpu(gpt->pheader->sizeof_partition_entry);
- break;
+ *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 unsigned partitions_in_use(struct gpt_header *header,
- struct gpt_entry *ents)
+static size_t partitions_in_use(struct fdisk_gpt_label *gpt)
{
- uint32_t i, used = 0;
+ size_t i, used = 0;
- if (!header || ! ents)
- return 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);
- for (i = 0; i < le32_to_cpu(header->npartition_entries); i++)
- if (!partition_unused(&ents[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 gpt_header *header,
- struct gpt_entry *ents, uint64_t sectors)
+static uint32_t check_too_big_partitions(struct fdisk_gpt_label *gpt, uint64_t sectors)
{
- uint32_t i;
+ size_t i;
- for (i = 0; i < le32_to_cpu(header->npartition_entries); i++) {
- if (partition_unused(&ents[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(&ents[i]) >= sectors)
+ if (gpt_partition_end(e) >= sectors)
return i + 1;
}
* Check if a partition ends before it begins
* Returns the faulting partition number, otherwise 0.
*/
-static uint32_t check_start_after_end_paritions(struct gpt_header *header,
- struct gpt_entry *ents)
+static uint32_t check_start_after_end_partitions(struct fdisk_gpt_label *gpt)
{
- uint32_t i;
+ size_t i;
+
+ assert(gpt);
+ assert(gpt->pheader);
+ assert(gpt->ents);
- for (i = 0; i < le32_to_cpu(header->npartition_entries); i++) {
- if (partition_unused(&ents[i]))
+ 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(&ents[i]) > gpt_partition_end(&ents[i]))
+ if (gpt_partition_start(e) > gpt_partition_end(e))
return i + 1;
}
/*
* Find any partitions that overlap.
*/
-static uint32_t check_overlap_partitions(struct gpt_header *header,
- struct gpt_entry *ents)
+static uint32_t check_overlap_partitions(struct fdisk_gpt_label *gpt)
{
- uint32_t i, j;
+ size_t i, j;
+
+ assert(gpt);
+ assert(gpt->pheader);
+ assert(gpt->ents);
- for (i = 0; i < le32_to_cpu(header->npartition_entries); i++)
+ for (i = 0; i < gpt_get_nentries(gpt); i++)
for (j = 0; j < i; j++) {
- if (partition_unused(&ents[i]) ||
- partition_unused(&ents[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(&ents[i], &ents[j])) {
- DBG(LABEL, ul_debug("GPT partitions overlap detected [%u vs. %u]", i, j));
+ if (partition_overlap(ei, ej)) {
+ DBG(LABEL, ul_debug("GPT partitions overlap detected [%zu vs. %zu]", i, j));
return i + 1;
}
}
* 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 gpt_header *header,
- struct gpt_entry *ents, uint64_t start)
+static uint64_t find_first_available(struct fdisk_gpt_label *gpt, uint64_t start)
{
+ int first_moved = 0;
uint64_t first;
- uint32_t i, first_moved = 0;
-
uint64_t fu, lu;
- if (!header || !ents)
- return 0;
+ assert(gpt);
+ assert(gpt->pheader);
+ assert(gpt->ents);
- fu = le64_to_cpu(header->first_usable_lba);
- lu = le64_to_cpu(header->last_usable_lba);
+ 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
* cases where partitions are out of sequential order....
*/
do {
+ size_t i;
+
first_moved = 0;
- for (i = 0; i < le32_to_cpu(header->npartition_entries); i++) {
- if (partition_unused(&ents[i]))
+ 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(&ents[i]))
+ if (first < gpt_partition_start(e))
continue;
- if (first <= gpt_partition_end(&ents[i])) {
- first = gpt_partition_end(&ents[i]) + 1;
+ if (first <= gpt_partition_end(e)) {
+ first = gpt_partition_end(e) + 1;
first_moved = 1;
}
}
/* Returns last available sector in the free space pointed to by start. From gdisk. */
-static uint64_t find_last_free(struct gpt_header *header,
- struct gpt_entry *ents, uint64_t start)
+static uint64_t find_last_free(struct fdisk_gpt_label *gpt, uint64_t start)
{
- uint32_t i;
+ size_t i;
uint64_t nearest_start;
- if (!header || !ents)
- return 0;
+ assert(gpt);
+ assert(gpt->pheader);
+ assert(gpt->ents);
- nearest_start = le64_to_cpu(header->last_usable_lba);
+ nearest_start = le64_to_cpu(gpt->pheader->last_usable_lba);
- for (i = 0; i < le32_to_cpu(header->npartition_entries); i++) {
- uint64_t ps = gpt_partition_start(&ents[i]);
+ 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 - 1;
+ 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 gpt_header *header,
- struct gpt_entry *ents)
+static uint64_t find_last_free_sector(struct fdisk_gpt_label *gpt)
{
- uint32_t i, last_moved;
+ int last_moved;
uint64_t last = 0;
- if (!header || !ents)
- goto done;
+ assert(gpt);
+ assert(gpt->pheader);
+ assert(gpt->ents);
/* start by assuming the last usable LBA is available */
- last = le64_to_cpu(header->last_usable_lba);
+ last = le64_to_cpu(gpt->pheader->last_usable_lba);
do {
+ size_t i;
+
last_moved = 0;
- for (i = 0; i < le32_to_cpu(header->npartition_entries); i++) {
- if ((last >= gpt_partition_start(&ents[i])) &&
- (last <= gpt_partition_end(&ents[i]))) {
- last = gpt_partition_start(&ents[i]) - 1;
+ 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);
-done:
+
return last;
}
* space on the disk. Returns 0 if there are no available blocks left.
* From gdisk.
*/
-static uint64_t find_first_in_largest(struct gpt_header *header,
- struct gpt_entry *ents)
+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;
- if (!header || !ents)
- goto done;
+ assert(gpt);
+ assert(gpt->pheader);
+ assert(gpt->ents);
do {
- first_sect = find_first_available(header, ents, start);
+ first_sect = find_first_available(gpt, start);
if (first_sect != 0) {
- last_sect = find_last_free(header, ents, first_sect);
- segment_size = last_sect - first_sect + 1;
+ 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 + 1;
+ start = last_sect + 1ULL;
}
} while (first_sect != 0);
-done:
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 gpt_header *header,
- struct gpt_entry *ents, uint32_t *nsegments,
+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;
if (!cxt->total_sectors)
goto done;
+ assert(gpt);
+ assert(gpt->pheader);
+ assert(gpt->ents);
+
do {
- first_sect = find_first_available(header, ents, start);
+ first_sect = find_first_available(gpt, start);
if (first_sect) {
- last_sect = find_last_free(header, ents, 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 + 1;
+ start = last_sect + 1ULL;
}
} while (first_sect);
gpt_recompute_crc(gpt->pheader, gpt->ents);
}
- cxt->label->nparts_max = le32_to_cpu(gpt->pheader->npartition_entries);
- cxt->label->nparts_cur = partitions_in_use(gpt->pheader, gpt->ents);
+ 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"));
assert(res);
*res = NULL;
- attrs = le64_to_cpu(e->attrs);
+ attrs = e->attrs;
if (!attrs)
return 0; /* no attributes at all */
DBG(LABEL, ul_debug(" parsing item '%s'", p));
- if (strncmp(p, "GUID:", 5) == 0) {
- p += 5;
- continue;
- } else if (strncmp(p, GPT_ATTRSTR_REQ,
+ 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;
sizeof(GPT_ATTRSTR_NOBLOCK) - 1) == 0) {
bit = GPT_ATTRBIT_NOBLOCK;
p += sizeof(GPT_ATTRSTR_NOBLOCK) - 1;
- } else if (isdigit((unsigned int) *p)) {
+
+ /* 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
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++;
p++;
}
- e->attrs = cpu_to_le64(attrs);
+ e->attrs = attrs;
return 0;
}
gpt = self_label(cxt);
- if ((uint32_t) n >= le32_to_cpu(gpt->pheader->npartition_entries))
+ if (n >= gpt_get_nentries(gpt))
return -EINVAL;
gpt = self_label(cxt);
- e = &gpt->ents[n];
+ e = gpt_get_entry(gpt, n);
- pa->used = !partition_unused(e) || gpt_partition_start(e);
+ pa->used = gpt_entry_is_used(e) || gpt_partition_start(e);
if (!pa->used)
return 0;
gpt = self_label(cxt);
- if ((uint32_t) n >= le32_to_cpu(gpt->pheader->npartition_entries))
+ if (n >= gpt_get_nentries(gpt))
return -EINVAL;
FDISK_INIT_UNDEF(start);
FDISK_INIT_UNDEF(end);
gpt = self_label(cxt);
- e = &gpt->ents[n];
+ e = gpt_get_entry(gpt, n);
if (pa->uuid) {
char new_u[37], old_u[37];
end = xstart + xsize - 1ULL;
}
- if (!FDISK_IS_UNDEF(start))
+ 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 (!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);
}
-/*
- * List label partitions.
- */
-static int gpt_list_disklabel(struct fdisk_context *cxt)
-{
- assert(cxt);
- assert(cxt->label);
- assert(fdisk_is_label(cxt, GPT));
-
- if (fdisk_is_details(cxt)) {
- struct gpt_header *h = self_label(cxt)->pheader;
-
- fdisk_info(cxt, _("First LBA: %ju"), le64_to_cpu(h->first_usable_lba));
- fdisk_info(cxt, _("Last LBA: %ju"), le64_to_cpu(h->last_usable_lba));
- /* TRANSLATORS: The LBA (Logical Block Address) of the backup GPT header. */
- fdisk_info(cxt, _("Alternative LBA: %ju"), le64_to_cpu(h->alternative_lba));
- /* TRANSLATORS: The start of the array of partition entries. */
- fdisk_info(cxt, _("Partition entries LBA: %ju"), le64_to_cpu(h->partition_entry_lba));
- fdisk_info(cxt, _("Allocated partition entries: %u"), le32_to_cpu(h->npartition_entries));
- }
-
- return 0;
-}
/*
* Write partitions.
* Returns 0 on success, or corresponding error otherwise.
*/
static int gpt_write_partitions(struct fdisk_context *cxt,
- struct gpt_header *header, struct gpt_entry *ents)
+ struct gpt_header *header, unsigned char *ents)
{
- off_t offset = le64_to_cpu(header->partition_entry_lba) * cxt->sector_size;
- uint32_t nparts = le32_to_cpu(header->npartition_entries);
- uint32_t totwrite = nparts * le32_to_cpu(header->sizeof_partition_entry);
- ssize_t rc;
+ off_t offset = (off_t) le64_to_cpu(header->partition_entry_lba) * cxt->sector_size;
+ size_t towrite;
+ ssize_t ssz;
+ int rc;
+
+ rc = gpt_sizeof_ents(header, &towrite);
+ if (rc)
+ return rc;
if (offset != lseek(cxt->dev_fd, offset, SEEK_SET))
- goto fail;
+ return -errno;
- rc = write(cxt->dev_fd, ents, totwrite);
- if (rc > 0 && totwrite == (uint32_t) rc)
- return 0;
-fail:
- return -errno;
+ ssz = write(cxt->dev_fd, ents, towrite);
+ if (ssz < 0 || (ssize_t) towrite != ssz)
+ return -errno;
+
+ return 0;
}
/*
* 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 - 1 > 0xFFFFFFFFULL)
+ 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(cxt->total_sectors - 1UL);
+ 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 err0;
/* check that the backup header is properly placed */
- if (le64_to_cpu(gpt->pheader->alternative_lba) < cxt->total_sectors - 1)
+ if (le64_to_cpu(gpt->pheader->alternative_lba) < cxt->total_sectors - 1ULL)
/* TODO: correct this (with user authorization) and write */
goto err0;
- if (check_overlap_partitions(gpt->pheader, gpt->ents))
+ if (check_overlap_partitions(gpt))
goto err0;
/* recompute CRCs for both headers */
/*
* Verify data integrity and report any found problems for:
* - primary and backup header validations
- * - paritition validations
+ * - partition validations
*/
static int gpt_verify_disklabel(struct fdisk_context *cxt)
{
assert(fdisk_is_label(cxt, GPT));
gpt = self_label(cxt);
+ if (!gpt)
+ return -EINVAL;
- if (!gpt || !gpt->bheader) {
+ if (!gpt->bheader) {
nerror++;
fdisk_warnx(cxt, _("Disk does not contain a valid backup header."));
}
fdisk_warnx(cxt, _("Primary and backup header mismatch."));
}
- ptnum = check_overlap_partitions(gpt->pheader, gpt->ents);
+ 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->pheader, gpt->ents, cxt->total_sectors);
+ 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_paritions(gpt->pheader, gpt->ents);
+ ptnum = check_start_after_end_partitions(gpt);
if (ptnum) {
nerror++;
fdisk_warnx(cxt, _("Partition %u ends before it starts."),
fdisk_info(cxt, _("No errors detected."));
fdisk_info(cxt, _("Header version: %s"), gpt_get_header_revstr(gpt->pheader));
- fdisk_info(cxt, _("Using %u out of %d partitions."),
- partitions_in_use(gpt->pheader, gpt->ents),
- le32_to_cpu(gpt->pheader->npartition_entries));
+ fdisk_info(cxt, _("Using %zu out of %zu partitions."),
+ partitions_in_use(gpt),
+ gpt_get_nentries(gpt));
- free_sectors = get_free_sectors(cxt, gpt->pheader, gpt->ents,
- &nsegments, &largest_segment);
+ 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);
gpt = self_label(cxt);
- if (partnum >= cxt->label->nparts_max
- || partition_unused(&gpt->ents[partnum]))
+ if (partnum >= cxt->label->nparts_max)
return -EINVAL;
- /* hasta la vista, baby! */
- memset(&gpt->ents[partnum], 0, sizeof(struct gpt_entry));
- if (!partition_unused(&gpt->ents[partnum]))
+ if (!gpt_entry_is_used(gpt_get_entry(gpt, partnum)))
return -EINVAL;
- else {
- 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);
- }
+
+ /* 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;
}
struct gpt_guid typeid;
struct fdisk_gpt_label *gpt;
struct gpt_header *pheader;
- struct gpt_entry *e, *ents;
+ struct gpt_entry *e;
struct fdisk_ask *ask = NULL;
size_t partnum;
int rc;
assert(fdisk_is_label(cxt, GPT));
gpt = self_label(cxt);
+
+ assert(gpt);
+ assert(gpt->pheader);
+ assert(gpt->ents);
+
pheader = gpt->pheader;
- ents = gpt->ents;
rc = fdisk_partition_next_partno(pa, cxt, &partnum);
if (rc) {
DBG(LABEL, ul_debug("GPT failed to get next partno"));
return rc;
}
- if (!partition_unused(&ents[partnum])) {
+
+ 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 (le32_to_cpu(pheader->npartition_entries) ==
- partitions_in_use(pheader, ents)) {
+ 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, pheader, ents, NULL, NULL)) {
+ if (!get_free_sectors(cxt, gpt, NULL, NULL)) {
fdisk_warnx(cxt, _("No free sectors available."));
return -ENOSPC;
}
if (rc)
return rc;
- disk_f = find_first_available(pheader, ents, le64_to_cpu(pheader->first_usable_lba));
+ 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))
- && !partition_unused(&ents[0])
- && disk_f < gpt_partition_start(&ents[0])) {
+ && gpt_entry_is_used(e)
+ && disk_f < gpt_partition_start(e)) {
do {
uint64_t x;
- DBG(LABEL, ul_debug("testing first sector %ju", disk_f));
- disk_f = find_first_available(pheader, ents, disk_f);
+ 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(pheader, ents, disk_f);
+ x = find_last_free(gpt, disk_f);
if (x - disk_f >= cxt->grain / cxt->sector_size)
break;
- DBG(LABEL, ul_debug("first sector %ju addresses to small space, continue...", disk_f));
- disk_f = x + 1;
+ 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(pheader, ents, le64_to_cpu(pheader->first_usable_lba));
+ disk_f = find_first_available(gpt, le64_to_cpu(pheader->first_usable_lba));
}
- disk_l = find_last_free_sector(pheader, ents);
+ e = NULL;
+ disk_l = find_last_free_sector(gpt);
/* the default is the largest free space */
- dflt_f = find_first_in_largest(pheader, ents);
- dflt_l = find_last_free(pheader, ents, dflt_f);
+ 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);
user_f = dflt_f;
} else if (pa && fdisk_partition_has_start(pa)) {
- DBG(LABEL, ul_debug("first sector defined: %ju", pa->start));
- if (pa->start != find_first_available(pheader, ents, pa->start)) {
- fdisk_warnx(cxt, _("Sector %ju already used."), pa->start);
+ 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;
goto done;
user_f = fdisk_ask_number_get_result(ask);
- if (user_f != find_first_available(pheader, ents, user_f)) {
+ if (user_f != find_first_available(gpt, user_f)) {
fdisk_warnx(cxt, _("Sector %ju already used."), user_f);
continue;
}
/* Last sector */
- dflt_l = find_last_free(pheader, ents, user_f);
+ 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: %ju (last possible: %ju)",
- pa->size, user_l, dflt_l));
+ 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
&& 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 -= 1;
+ user_l -= 1ULL;
}
} else {
for (;;) {
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);
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) - 1;
-
- /* no space for anything useful, use all space
- if (user_l + (cxt->grain / cxt->sector_size) > dflt_l)
- user_l = dflt_l;
- */
+ 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)
+ if (user_l >= user_f && user_l <= disk_l)
break;
+
+ fdisk_warnx(cxt, _("Value out of range."));
}
}
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 = &ents[partnum];
+ e = gpt_get_entry(gpt, partnum);
e->lba_end = cpu_to_le64(user_l);
e->lba_start = cpu_to_le64(user_f);
if (pa && pa->attrs)
gpt_entry_attrs_from_string(cxt, e, pa->attrs);
- DBG(LABEL, ul_debug("GPT new partition: partno=%zu, start=%ju, end=%ju, size=%ju",
+ 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, ents);
- gpt_recompute_crc(gpt->bheader, ents);
+ gpt_recompute_crc(gpt->pheader, gpt->ents);
+ gpt_recompute_crc(gpt->bheader, gpt->ents);
/* report result */
{
cxt->label->nparts_cur++;
fdisk_label_set_changed(cxt->label, 1);
- t = gpt_partition_parttype(cxt, &ents[partnum]);
+ t = gpt_partition_parttype(cxt, e);
fdisk_info_new_partition(cxt, partnum + 1, user_f, user_l, t);
fdisk_unref_parttype(t);
}
static int gpt_create_disklabel(struct fdisk_context *cxt)
{
int rc = 0;
- ssize_t esz = 0;
+ size_t esz = 0;
char str[37];
struct fdisk_gpt_label *gpt;
if (rc < 0)
goto done;
- esz = le32_to_cpu(gpt->pheader->npartition_entries) *
- le32_to_cpu(gpt->pheader->sizeof_partition_entry);
+ rc = gpt_sizeof_ents(gpt->pheader, &esz);
+ if (rc)
+ goto done;
gpt->ents = calloc(1, esz);
if (!gpt->ents) {
rc = -ENOMEM;
gpt_recompute_crc(gpt->pheader, gpt->ents);
gpt_recompute_crc(gpt->bheader, gpt->ents);
- cxt->label->nparts_max = le32_to_cpu(gpt->pheader->npartition_entries);
+ cxt->label->nparts_max = gpt_get_nentries(gpt);
cxt->label->nparts_cur = 0;
guid_to_string(&gpt->pheader->disk_guid, str);
return rc;
}
-static int gpt_get_disklabel_id(struct fdisk_context *cxt, char **id)
-{
- struct fdisk_gpt_label *gpt;
- char str[37];
-
- assert(cxt);
- assert(id);
- assert(cxt->label);
- assert(fdisk_is_label(cxt, GPT));
-
- gpt = self_label(cxt);
- guid_to_string(&gpt->pheader->disk_guid, str);
-
- *id = strdup(str);
- if (!*id)
- return -ENOMEM;
- return 0;
-}
-
static int gpt_set_disklabel_id(struct fdisk_context *cxt)
{
struct fdisk_gpt_label *gpt;
return rc;
}
- gpt_get_disklabel_id(cxt, &old);
+ 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);
- gpt_get_disklabel_id(cxt, &new);
+ new = gpt_get_header_id(gpt->pheader);
fdisk_info(cxt, _("Disk identifier changed from %s to %s."), old, new);
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;
gpt = self_label(cxt);
- if ((uint32_t) i >= le32_to_cpu(gpt->pheader->npartition_entries))
+ if (i >= gpt_get_nentries(gpt))
return 0;
- e = &gpt->ents[i];
- return !partition_unused(e) || gpt_partition_start(e);
+ e = gpt_get_entry(gpt, i);
+
+ return gpt_entry_is_used(e) || gpt_partition_start(e);
}
/**
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;
- uint64_t attrs, tmp;
+ struct gpt_entry *e;
+ uint64_t attrs;
+ uintmax_t tmp;
char *bits;
const char *name = NULL;
int bit = -1, rc;
DBG(LABEL, ul_debug("GPT entry attribute change requested partno=%zu", i));
gpt = self_label(cxt);
- if ((uint32_t) i >= le32_to_cpu(gpt->pheader->npartition_entries))
+ if (i >= gpt_get_nentries(gpt))
return -EINVAL;
- attrs = le64_to_cpu(gpt->ents[i].attrs);
+ e = gpt_get_entry(gpt, i);
+ attrs = e->attrs;
bits = (char *) &attrs;
switch (flag) {
else
clrbit(bits, bit);
- gpt->ents[i].attrs = cpu_to_le64(attrs);
+ e->attrs = attrs;
if (flag == GPT_FLAG_GUIDSPECIFIC)
fdisk_info(cxt, isset(bits, bit) ?
{
struct gpt_entry *ae = (struct gpt_entry *) a,
*be = (struct gpt_entry *) b;
- int au = partition_unused(ae),
- bu = partition_unused(be);
+ int au = gpt_entry_is_used(ae),
+ bu = gpt_entry_is_used(be);
- if (au && bu)
+ if (!au && !bu)
return 0;
- if (au)
+ if (!au)
return 1;
- if (bu)
+ if (!bu)
return -1;
return cmp_numbers(gpt_partition_start(ae), gpt_partition_start(be));
static int gpt_reorder(struct fdisk_context *cxt)
{
struct fdisk_gpt_label *gpt;
- size_t nparts;
+ size_t i, nparts, mess;
assert(cxt);
assert(cxt->label);
assert(fdisk_is_label(cxt, GPT));
gpt = self_label(cxt);
- nparts = le32_to_cpu(gpt->pheader->npartition_entries);
+ 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->bheader, gpt->ents);
fdisk_label_set_changed(cxt->label, 1);
- fdisk_info(cxt, _("Done."));
return 0;
}
.write = gpt_write_disklabel,
.verify = gpt_verify_disklabel,
.create = gpt_create_disklabel,
- .list = gpt_list_disklabel,
.locate = gpt_locate_disklabel,
- .reorder = gpt_reorder,
- .get_id = gpt_get_disklabel_id,
+ .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,
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
projects / thirdparty / util-linux.git / blobdiff