diff options
Diffstat (limited to 'shlibs/blkid/src/superblocks/ddf_raid.c')
| -rw-r--r-- | shlibs/blkid/src/superblocks/ddf_raid.c | 71 |
1 files changed, 65 insertions, 6 deletions
diff --git a/shlibs/blkid/src/superblocks/ddf_raid.c b/shlibs/blkid/src/superblocks/ddf_raid.c index a48735d2..c0ba3351 100644 --- a/shlibs/blkid/src/superblocks/ddf_raid.c +++ b/shlibs/blkid/src/superblocks/ddf_raid.c @@ -18,12 +18,57 @@ /* http://www.snia.org/standards/home */ #define DDF_GUID_LENGTH 24 #define DDF_REV_LENGTH 8 +#define DDF_MAGIC 0xDE11DE11 + struct ddf_header { - uint8_t signature[4]; + uint32_t signature; uint32_t crc; uint8_t guid[DDF_GUID_LENGTH]; - uint8_t ddf_rev[DDF_REV_LENGTH]; + char ddf_rev[8]; /* 01.02.00 */ + uint32_t seq; /* starts at '1' */ + uint32_t timestamp; + uint8_t openflag; + uint8_t foreignflag; + uint8_t enforcegroups; + uint8_t pad0; /* 0xff */ + uint8_t pad1[12]; /* 12 * 0xff */ + /* 64 bytes so far */ + uint8_t header_ext[32]; /* reserved: fill with 0xff */ + uint64_t primary_lba; + uint64_t secondary_lba; + uint8_t type; + uint8_t pad2[3]; /* 0xff */ + uint32_t workspace_len; /* sectors for vendor space - + * at least 32768(sectors) */ + uint64_t workspace_lba; + uint16_t max_pd_entries; /* one of 15, 63, 255, 1023, 4095 */ + uint16_t max_vd_entries; /* 2^(4,6,8,10,12)-1 : i.e. as above */ + uint16_t max_partitions; /* i.e. max num of configuration + record entries per disk */ + uint16_t config_record_len; /* 1 +ROUNDUP(max_primary_element_entries + *12/512) */ + uint16_t max_primary_element_entries; /* 16, 64, 256, 1024, or 4096 */ + uint8_t pad3[54]; /* 0xff */ + /* 192 bytes so far */ + uint32_t controller_section_offset; + uint32_t controller_section_length; + uint32_t phys_section_offset; + uint32_t phys_section_length; + uint32_t virt_section_offset; + uint32_t virt_section_length; + uint32_t config_section_offset; + uint32_t config_section_length; + uint32_t data_section_offset; + uint32_t data_section_length; + uint32_t bbm_section_offset; + uint32_t bbm_section_length; + uint32_t diag_space_offset; + uint32_t diag_space_length; + uint32_t vendor_offset; + uint32_t vendor_length; + /* 256 bytes so far */ + uint8_t pad4[256]; /* 0xff */ } __attribute__((packed)); static int probe_ddf(blkid_probe pr, const struct blkid_idmag *mag) @@ -32,7 +77,7 @@ static int probe_ddf(blkid_probe pr, const struct blkid_idmag *mag) int i; struct ddf_header *ddf = NULL; char version[DDF_REV_LENGTH + 1]; - uint64_t off; + uint64_t off, lba; if (pr->size < 0x30000) return -1; @@ -46,8 +91,8 @@ static int probe_ddf(blkid_probe pr, const struct blkid_idmag *mag) if (!ddf) return -1; - if (memcmp(ddf->signature, "\x11\xde\x11\xde", 4) == 0 || - memcmp(ddf->signature, "\xde\x11\xde\x11", 4) == 0) + if (ddf->signature == cpu_to_be32(DDF_MAGIC) || + ddf->signature == cpu_to_le32(DDF_MAGIC)) break; ddf = NULL; } @@ -55,6 +100,20 @@ static int probe_ddf(blkid_probe pr, const struct blkid_idmag *mag) if (!ddf) return -1; + lba = ddf->signature == cpu_to_be32(DDF_MAGIC) ? + be64_to_cpu(ddf->primary_lba) : + le64_to_cpu(ddf->primary_lba); + + if (lba > 0) { + /* check primary header */ + unsigned char *buf; + + buf = blkid_probe_get_buffer(pr, + lba << 9, sizeof(ddf->signature)); + if (!buf || memcmp(buf, &ddf->signature, 4)) + return -1; + } + blkid_probe_strncpy_uuid(pr, ddf->guid, sizeof(ddf->guid)); memcpy(version, ddf->ddf_rev, sizeof(ddf->ddf_rev)); @@ -64,7 +123,7 @@ static int probe_ddf(blkid_probe pr, const struct blkid_idmag *mag) return -1; if (blkid_probe_set_magic(pr, off, sizeof(ddf->signature), - (unsigned char *) ddf->signature)) + (unsigned char *) &ddf->signature)) return -1; return 0; } |