--- /dev/null
+/*
+ * mdadm - Intel(R) Matrix Storage Manager Support
+ *
+ * Copyright (C) 2002-2007 Intel Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include "mdadm.h"
+#include <values.h>
+#include <scsi/sg.h>
+#include <ctype.h>
+
+/* MPB == Metadata Parameter Block */
+#define MPB_SIGNATURE "Intel Raid ISM Cfg Sig. "
+#define MPB_SIG_LEN (strlen(MPB_SIGNATURE))
+#define MPB_VERSION_RAID0 "1.0.00"
+#define MPB_VERSION_RAID1 "1.1.00"
+#define MPB_VERSION_RAID5 "1.2.02"
+#define MAX_SIGNATURE_LENGTH 32
+#define MAX_RAID_SERIAL_LEN 16
+
+/* Disk configuration info. */
+#define IMSM_MAX_DEVICES 255
+struct imsm_disk {
+ __u8 serial[MAX_RAID_SERIAL_LEN];/* 0xD8 - 0xE7 ascii serial number */
+ __u32 total_blocks; /* 0xE8 - 0xEB total blocks */
+ __u32 scsi_id; /* 0xEC - 0xEF scsi ID */
+ __u32 status; /* 0xF0 - 0xF3 */
+#define SPARE_DISK 0x01 /* Spare */
+#define CONFIGURED_DISK 0x02 /* Member of some RaidDev */
+#define FAILED_DISK 0x04 /* Permanent failure */
+#define USABLE_DISK 0x08 /* Fully usable unless FAILED_DISK is set */
+
+#define IMSM_DISK_FILLERS 5
+ __u32 filler[IMSM_DISK_FILLERS]; /* 0xF4 - 0x107 MPB_DISK_FILLERS for future expansion */
+};
+
+/* RAID map configuration infos. */
+struct imsm_map {
+ __u32 pba_of_lba0; /* start address of partition */
+ __u32 blocks_per_member;/* blocks per member */
+ __u32 num_data_stripes; /* number of data stripes */
+ __u16 blocks_per_strip;
+ __u8 map_state; /* Normal, Uninitialized, Degraded, Failed */
+#define IMSM_T_STATE_NORMAL 0
+#define IMSM_T_STATE_UNINITIALIZED 1
+#define IMSM_T_STATE_DEGRADED 2 /* FIXME: is this correct? */
+#define IMSM_T_STATE_FAILED 3 /* FIXME: is this correct? */
+ __u8 raid_level;
+#define IMSM_T_RAID0 0
+#define IMSM_T_RAID1 1
+#define IMSM_T_RAID5 5 /* since metadata version 1.2.02 ? */
+ __u8 num_members; /* number of member disks */
+ __u8 reserved[3];
+ __u32 filler[7]; /* expansion area */
+ __u32 disk_ord_tbl[1]; /* disk_ord_tbl[num_members],
+ top byte special */
+} __attribute__ ((packed));
+
+struct imsm_vol {
+ __u32 reserved[2];
+ __u8 migr_state; /* Normal or Migrating */
+ __u8 migr_type; /* Initializing, Rebuilding, ... */
+ __u8 dirty;
+ __u8 fill[1];
+ __u32 filler[5];
+ struct imsm_map map[1];
+ /* here comes another one if migr_state */
+} __attribute__ ((packed));
+
+struct imsm_dev {
+ __u8 volume[MAX_RAID_SERIAL_LEN];
+ __u32 size_low;
+ __u32 size_high;
+ __u32 status; /* Persistent RaidDev status */
+ __u32 reserved_blocks; /* Reserved blocks at beginning of volume */
+#define IMSM_DEV_FILLERS 12
+ __u32 filler[IMSM_DEV_FILLERS];
+ struct imsm_vol vol;
+} __attribute__ ((packed));
+
+struct imsm_super {
+ __u8 sig[MAX_SIGNATURE_LENGTH]; /* 0x00 - 0x1F */
+ __u32 check_sum; /* 0x20 - 0x23 MPB Checksum */
+ __u32 mpb_size; /* 0x24 - 0x27 Size of MPB */
+ __u32 family_num; /* 0x28 - 0x2B Checksum from first time this config was written */
+ __u32 generation_num; /* 0x2C - 0x2F Incremented each time this array's MPB is written */
+ __u32 reserved[2]; /* 0x30 - 0x37 */
+ __u8 num_disks; /* 0x38 Number of configured disks */
+ __u8 num_raid_devs; /* 0x39 Number of configured volumes */
+ __u8 fill[2]; /* 0x3A - 0x3B */
+#define IMSM_FILLERS 39
+ __u32 filler[IMSM_FILLERS]; /* 0x3C - 0xD7 RAID_MPB_FILLERS */
+ struct imsm_disk disk[1]; /* 0xD8 diskTbl[numDisks] */
+ /* here comes imsm_dev[num_raid_devs] */
+} __attribute__ ((packed));
+
+#ifndef MDASSEMBLE
+static char *map_state_str[] = { "normal", "uninitialized", "degraded", "failed" };
+#endif
+
+static unsigned long long mpb_sectors(struct imsm_super *mpb)
+{
+ __u32 size = __le32_to_cpu(mpb->mpb_size);
+
+ return ((size + (512-1)) & (~(512-1))) / 512;
+}
+
+/* internal representation of IMSM metadata */
+struct intel_super {
+ union {
+ struct imsm_super *mpb;
+ void *buf;
+ };
+ struct dl {
+ struct dl *next;
+ int index;
+ __u8 serial[MAX_RAID_SERIAL_LEN];
+ int major, minor;
+ char *devname;
+ int fd;
+ } *disks;
+};
+
+static struct supertype *match_metadata_desc_imsm(char *arg)
+{
+ struct supertype *st;
+
+ if (strcmp(arg, "imsm") != 0 &&
+ strcmp(arg, "default") != 0
+ )
+ return NULL;
+
+ st = malloc(sizeof(*st));
+ st->ss = &super_imsm;
+ st->max_devs = IMSM_MAX_DEVICES;
+ st->minor_version = 0;
+ st->sb = NULL;
+ return st;
+}
+
+static struct supertype *match_metadata_desc_imsm_raid(char *arg)
+{
+ struct supertype *st;
+
+ if (strcmp(arg, "imsm/raid") != 0 &&
+ strcmp(arg, "raid") != 0 &&
+ strcmp(arg, "default") != 0
+ )
+ return NULL;
+
+ st = malloc(sizeof(*st));
+ st->ss = &super_imsm_raid;
+ st->max_devs = IMSM_MAX_DEVICES;
+ st->minor_version = 0;
+ st->sb = NULL;
+ return st;
+}
+
+static __u8 *get_imsm_version(struct imsm_super *mpb)
+{
+ return &mpb->sig[MPB_SIG_LEN];
+}
+
+static struct imsm_disk *get_imsm_disk(struct imsm_super *mpb, __u8 index)
+{
+ if (index > mpb->num_disks - 1)
+ return NULL;
+ return &mpb->disk[index];
+}
+
+static __u32 gen_imsm_checksum(struct imsm_super *mpb)
+{
+ __u32 end = mpb->mpb_size / sizeof(end);
+ __u32 *p = (__u32 *) mpb;
+ __u32 sum = 0;
+
+ while (end--)
+ sum += __le32_to_cpu(*p++);
+
+ return sum - __le32_to_cpu(mpb->check_sum);
+}
+
+static size_t sizeof_imsm_dev(struct imsm_dev *dev)
+{
+ size_t size = sizeof(*dev);
+
+ /* each map has disk_ord_tbl[num_members - 1] additional space */
+ size += sizeof(__u32) * (dev->vol.map[0].num_members - 1);
+
+ /* migrating means an additional map */
+ if (dev->vol.migr_state) {
+ size += sizeof(struct imsm_map);
+ size += sizeof(__u32) * (dev->vol.map[1].num_members - 1);
+ }
+
+ return size;
+}
+
+static struct imsm_dev *get_imsm_dev(struct imsm_super *mpb, __u8 index)
+{
+ int offset;
+ int i;
+ void *_mpb = mpb;
+
+ if (index > mpb->num_raid_devs - 1)
+ return NULL;
+
+ /* devices start after all disks */
+ offset = ((void *) &mpb->disk[mpb->num_disks]) - _mpb;
+
+ for (i = 0; i <= index; i++)
+ if (i == index)
+ return _mpb + offset;
+ else
+ offset += sizeof_imsm_dev(_mpb + offset);
+
+ return NULL;
+}
+
+static __u32 get_imsm_disk_idx(struct imsm_map *map, int slot)
+{
+ __u32 *ord_tbl = &map->disk_ord_tbl[slot];
+
+ /* top byte is 'special' */
+ return __le32_to_cpu(*ord_tbl & ~(0xff << 24));
+}
+
+#ifndef MDASSEMBLE
+static int get_imsm_raid_level(struct imsm_map *map)
+{
+ if (map->raid_level == 1) {
+ if (map->num_members == 2)
+ return 1;
+ else
+ return 10;
+ }
+
+ return map->raid_level;
+}
+
+static void print_imsm_dev(struct imsm_dev *dev, int index)
+{
+ __u64 sz;
+ int slot;
+ struct imsm_map *map = dev->vol.map;
+
+ printf("\n");
+ printf("[%s]:\n", dev->volume);
+ printf(" RAID Level : %d\n", get_imsm_raid_level(map));
+ printf(" Members : %d\n", map->num_members);
+ for (slot = 0; slot < map->num_members; slot++)
+ if (index == get_imsm_disk_idx(map, slot))
+ break;
+ if (slot < map->num_members)
+ printf(" This Slot : %d\n", slot);
+ else
+ printf(" This Slot : ?\n");
+ sz = __le32_to_cpu(dev->size_high);
+ sz <<= 32;
+ sz += __le32_to_cpu(dev->size_low);
+ printf(" Array Size : %llu%s\n", (unsigned long long)sz,
+ human_size(sz * 512));
+ sz = __le32_to_cpu(map->blocks_per_member);
+ printf(" Per Dev Size : %llu%s\n", (unsigned long long)sz,
+ human_size(sz * 512));
+ printf(" Sector Offset : %u\n",
+ __le32_to_cpu(map->pba_of_lba0));
+ printf(" Num Stripes : %u\n",
+ __le32_to_cpu(map->num_data_stripes));
+ printf(" Chunk Size : %u KiB\n",
+ __le16_to_cpu(map->blocks_per_strip) / 2);
+ printf(" Reserved : %d\n", __le32_to_cpu(dev->reserved_blocks));
+ printf(" Migrate State : %s\n", dev->vol.migr_state ? "migrating" : "idle");
+ printf(" Dirty State : %s\n", dev->vol.dirty ? "dirty" : "clean");
+ printf(" Map State : %s\n", map_state_str[map->map_state]);
+}
+
+static void print_imsm_disk(struct imsm_super *mpb, int index)
+{
+ struct imsm_disk *disk = get_imsm_disk(mpb, index);
+ char str[MAX_RAID_SERIAL_LEN];
+ __u32 s;
+ __u64 sz;
+
+ printf("\n");
+ snprintf(str, MAX_RAID_SERIAL_LEN, "%s", disk->serial);
+ printf(" Disk%02d Serial : %s\n", index, str);
+ s = __le32_to_cpu(disk->status);
+ printf(" State :%s%s%s%s\n", s&SPARE_DISK ? " spare" : "",
+ s&CONFIGURED_DISK ? " active" : "",
+ s&FAILED_DISK ? " failed" : "",
+ s&USABLE_DISK ? " usable" : "");
+ printf(" Id : %08x\n", __le32_to_cpu(disk->scsi_id));
+ sz = __le32_to_cpu(disk->total_blocks) - mpb_sectors(mpb);
+ printf(" Usable Size : %llu%s\n", (unsigned long long)sz,
+ human_size(sz * 512));
+}
+
+static void examine_super_imsm(struct supertype *st, char *homehost)
+{
+ struct intel_super *super = st->sb;
+ struct imsm_super *mpb = super->mpb;
+ char str[MAX_SIGNATURE_LENGTH];
+ int i;
+ __u32 sum;
+
+ snprintf(str, MPB_SIG_LEN, "%s", mpb->sig);
+ printf(" Magic : %s\n", str);
+ snprintf(str, strlen(MPB_VERSION_RAID0), "%s", get_imsm_version(mpb));
+ printf(" Version : %s\n", get_imsm_version(mpb));
+ printf(" Family : %08x\n", __le32_to_cpu(mpb->family_num));
+ printf(" Generation : %08x\n", __le32_to_cpu(mpb->generation_num));
+ sum = __le32_to_cpu(mpb->check_sum);
+ printf(" Checksum : %08x %s\n", sum,
+ gen_imsm_checksum(mpb) == sum ? "correct" : "incorrect");
+ printf(" Disks : %d\n", mpb->num_disks);
+ printf(" RAID Devices : %d\n", mpb->num_raid_devs);
+ print_imsm_disk(mpb, super->disks->index);
+ for (i = 0; i < mpb->num_raid_devs; i++)
+ print_imsm_dev(get_imsm_dev(mpb, i), super->disks->index);
+ for (i = 0; i < mpb->num_disks; i++) {
+ if (i == super->disks->index)
+ continue;
+ print_imsm_disk(mpb, i);
+ }
+}
+
+static void brief_examine_super_imsm(struct supertype *st)
+{
+ struct intel_super *super = st->sb;
+ struct imsm_super *mpb = super->mpb;
+
+ printf("ARRAY /dev/imsm family=%08x metadata=external:imsm\n",
+ __le32_to_cpu(mpb->family_num));
+}
+
+static void detail_super_imsm(struct supertype *st, char *homehost)
+{
+ printf("%s\n", __FUNCTION__);
+}
+
+static void brief_detail_super_imsm(struct supertype *st)
+{
+ printf("%s\n", __FUNCTION__);
+}
+#endif
+
+static int match_home_imsm(struct supertype *st, char *homehost)
+{
+ printf("%s\n", __FUNCTION__);
+
+ return 0;
+}
+
+static void uuid_from_super_imsm(struct supertype *st, int uuid[4])
+{
+ printf("%s\n", __FUNCTION__);
+}
+
+static void getinfo_super_imsm(struct supertype *st, struct mdinfo *info)
+{
+ struct intel_super *super = st->sb;
+ struct imsm_super *mpb = super->mpb;
+ struct imsm_disk *disk;
+ __u32 s;
+ __u8 *v = get_imsm_version(mpb);
+ __u8 *end = mpb->sig + MAX_SIGNATURE_LENGTH;
+ char major[] = { 0, 0, 0 };
+ char minor[] = { 0 ,0, 0 };
+ char patch[] = { 0, 0, 0 };
+ char *ver_parse[] = { major, minor, patch };
+ int i, j;
+
+ i = j = 0;
+ while (*v != '\0' && v < end) {
+ if (*v != '.' && j < 2)
+ ver_parse[i][j++] = *v;
+ else {
+ i++;
+ j = 0;
+ }
+ v++;
+ }
+
+ info->array.major_version = 2000;
+ info->array.minor_version = strtol(minor, NULL, 0);
+ info->array.patch_version = strtol(patch, NULL, 0);
+ info->array.raid_disks = mpb->num_disks;
+ info->array.level = LEVEL_CONTAINER;
+ info->array.layout = 0;
+ info->array.md_minor = -1;
+ info->array.ctime = __le32_to_cpu(mpb->generation_num); //??
+ info->array.utime = 0;
+ info->array.chunk_size = 0;
+
+ info->disk.major = 0;
+ info->disk.minor = 0;
+ info->disk.number = super->disks->index;
+ info->disk.raid_disk = -1;
+ /* is this disk a member of a raid device? */
+ for (i = 0; i < mpb->num_raid_devs; i++) {
+ struct imsm_dev *dev = get_imsm_dev(mpb, i);
+ struct imsm_map *map = dev->vol.map;
+
+ for (j = 0; j < map->num_members; j++) {
+ __u32 index = get_imsm_disk_idx(map, j);
+
+ if (index == super->disks->index) {
+ info->disk.raid_disk = super->disks->index;
+ break;
+ }
+ }
+ if (info->disk.raid_disk != -1)
+ break;
+ }
+ disk = get_imsm_disk(mpb, super->disks->index);
+ s = __le32_to_cpu(disk->status);
+ info->disk.state = s & CONFIGURED_DISK ? (1 << MD_DISK_ACTIVE) : 0;
+ info->disk.state |= s & FAILED_DISK ? (1 << MD_DISK_FAULTY) : 0;
+ info->disk.state |= s & USABLE_DISK ? (1 << MD_DISK_SYNC) : 0;
+ info->reshape_active = 0;
+}
+
+static void getinfo_super_imsm_raid(struct supertype *st, struct mdinfo *info)
+{
+ printf("%s\n", __FUNCTION__);
+}
+
+static int update_super_imsm(struct supertype *st, struct mdinfo *info,
+ char *update, char *devname, int verbose,
+ int uuid_set, char *homehost)
+{
+ return 0;
+}
+
+static __u64 avail_size_imsm(struct supertype *st, __u64 size)
+{
+ printf("%s\n", __FUNCTION__);
+
+ return 0;
+}
+
+static int compare_super_imsm(struct supertype *st, struct supertype *tst)
+{
+ /*
+ * return:
+ * 0 same, or first was empty, and second was copied
+ * 1 second had wrong number
+ * 2 wrong uuid
+ * 3 wrong other info
+ */
+ struct intel_super *first = st->sb;
+ struct intel_super *sec = tst->sb;
+
+ if (!first) {
+ st->sb = tst->sb;
+ tst->sb = NULL;
+ return 0;
+ }
+
+ if (memcmp(first->mpb->sig, sec->mpb->sig, MAX_SIGNATURE_LENGTH) != 0)
+ return 3;
+ if (first->mpb->family_num != sec->mpb->family_num)
+ return 3;
+ if (first->mpb->mpb_size != sec->mpb->mpb_size)
+ return 3;
+ if (first->mpb->check_sum != sec->mpb->check_sum)
+ return 3;
+
+ return 0;
+}
+
+extern int scsi_get_serial(int fd, void *buf, size_t buf_len);
+
+static int imsm_read_serial(int fd, char *devname,
+ __u8 serial[MAX_RAID_SERIAL_LEN])
+{
+ unsigned char scsi_serial[255];
+ struct stat stb;
+ int sg_fd;
+ int minor;
+ char sg_path[20];
+ int rv;
+ int rsp_len;
+ int i, cnt;
+
+ memset(scsi_serial, 0, sizeof(scsi_serial));
+ fstat(fd, &stb);
+ minor = minor(stb.st_rdev);
+ minor /= 16;
+
+ sprintf(sg_path, "/dev/sg%d", minor);
+ sg_fd = open(sg_path, O_RDONLY);
+ if (sg_fd < 0) {
+ if (devname)
+ fprintf(stderr,
+ Name ": Failed to open %s for %s: %s\n",
+ sg_path, devname, strerror(errno));
+ return 1;
+ }
+
+ rv = scsi_get_serial(sg_fd, scsi_serial, sizeof(scsi_serial));
+ close(sg_fd);
+
+ if (rv != 0) {
+ if (devname)
+ fprintf(stderr,
+ Name ": Failed to retrieve serial for %s\n",
+ devname);
+ return rv;
+ }
+
+ rsp_len = scsi_serial[3];
+ for (i = 0, cnt = 0; i < rsp_len; i++) {
+ if (!isspace(scsi_serial[4 + i]))
+ serial[cnt++] = scsi_serial[4 + i];
+ if (cnt == MAX_RAID_SERIAL_LEN)
+ break;
+ }
+
+ serial[MAX_RAID_SERIAL_LEN - 1] = '\0';
+
+ return 0;
+}
+
+static int
+load_imsm_disk(int fd, struct intel_super *super, char *devname, int keep_fd)
+{
+ struct imsm_super *mpb = super->mpb;
+ struct dl *dl;
+ struct stat stb;
+ struct imsm_disk *disk;
+ int rv;
+ int i;
+
+ dl = malloc(sizeof(*dl));
+ if (!dl) {
+ if (devname)
+ fprintf(stderr,
+ Name ": failed to allocate disk buffer for %s\n",
+ devname);
+ return 2;
+ }
+ memset(dl, 0, sizeof(*dl));
+
+ fstat(fd, &stb);
+ dl->major = major(stb.st_rdev);
+ dl->minor = minor(stb.st_rdev);
+ dl->next = super->disks;
+ dl->fd = keep_fd ? fd : -1;
+ dl->devname = devname ? strdup(devname) : NULL;
+ dl->index = -1;
+ super->disks = dl;
+ rv = imsm_read_serial(fd, devname, dl->serial);
+
+ if (rv != 0)
+ return 2;
+
+ /* look up this disk's index */
+ for (i = 0; i < mpb->num_disks; i++) {
+ disk = get_imsm_disk(mpb, i);
+
+ if (memcmp(disk->serial, dl->serial, MAX_RAID_SERIAL_LEN) == 0)
+ break;
+ }
+
+ if (i > mpb->num_disks)
+ return 2;
+
+ dl->index = i;
+
+ return 0;
+}
+
+/* load_imsm_mpb - read matrix metadata
+ * allocates super->mpb to be freed by free_super
+ */
+static int load_imsm_mpb(int fd, struct intel_super *super, char *devname)
+{
+ unsigned long long dsize;
+ size_t len, mpb_size;
+ unsigned long long sectors;
+ struct stat;
+ struct imsm_super anchor;
+ __u32 check_sum;
+
+ memset(super, 0, sizeof(*super));
+ get_dev_size(fd, NULL, &dsize);
+
+ if (lseek64(fd, dsize - (512 * 2), SEEK_SET) < 0) {
+ if (devname)
+ fprintf(stderr,
+ Name ": Cannot seek to anchor block on %s: %s\n",
+ devname, strerror(errno));
+ return 1;
+ }
+
+ len = sizeof(anchor);
+ if (read(fd, &anchor, len) != len) {
+ if (devname)
+ fprintf(stderr,
+ Name ": Cannot read anchor block on %s: %s\n",
+ devname, strerror(errno));
+ return 1;
+ }
+
+ if (strncmp((char *) anchor.sig, MPB_SIGNATURE, MPB_SIG_LEN) != 0) {
+ if (devname)
+ fprintf(stderr,
+ Name ": no IMSM anchor on %s\n", devname);
+ return 2;
+ }
+
+ mpb_size = __le32_to_cpu(anchor.mpb_size);
+ super->mpb = malloc(mpb_size < 512 ? 512 : mpb_size);
+ if (!super->mpb) {
+ if (devname)
+ fprintf(stderr,
+ Name ": unable to allocate %zu byte mpb buffer\n",
+ mpb_size);
+ return 2;
+ }
+ memcpy(super->buf, &anchor, sizeof(anchor));
+
+ /* read the rest of the first block */
+ len = 512 - sizeof(anchor);
+ if (read(fd, super->buf + sizeof(anchor), len) != len) {
+ if (devname)
+ fprintf(stderr,
+ Name ": Cannot read anchor remainder on %s: %s\n",
+ devname, strerror(errno));
+ return 2;
+ }
+
+ sectors = mpb_sectors(&anchor) - 1;
+ if (!sectors)
+ return load_imsm_disk(fd, super, devname, 0);
+
+ /* read the extended mpb */
+ if (lseek64(fd, dsize - (512 * (2 + sectors)), SEEK_SET) < 0) {
+ if (devname)
+ fprintf(stderr,
+ Name ": Cannot seek to extended mpb on %s: %s\n",
+ devname, strerror(errno));
+ return 1;
+ }
+
+ len = mpb_size - 512;
+ if (read(fd, super->buf + 512, len) != len) {
+ if (devname)
+ fprintf(stderr,
+ Name ": Cannot read extended mpb on %s: %s\n",
+ devname, strerror(errno));
+ return 2;
+ }
+
+ check_sum = gen_imsm_checksum(super->mpb);
+ if (check_sum != __le32_to_cpu(super->mpb->check_sum)) {
+ if (devname)
+ fprintf(stderr,
+ Name ": IMSM checksum %x != %x on %s\n",
+ check_sum, __le32_to_cpu(super->mpb->check_sum),
+ devname);
+ return 2;
+ }
+
+ return load_imsm_disk(fd, super, devname, 0);
+}
+
+struct superswitch super_imsm_container;
+
+static void free_imsm_disks(struct intel_super *super)
+{
+ while (super->disks) {
+ struct dl *d = super->disks;
+
+ super->disks = d->next;
+ if (d->fd >= 0)
+ close(d->fd);
+ if (d->devname)
+ free(d->devname);
+ free(d);
+ }
+}
+
+static void free_imsm(struct intel_super *super)
+{
+ if (super->mpb)
+ free(super->mpb);
+ free_imsm_disks(super);
+ free(super);
+}
+
+
+static void free_super_imsm(struct supertype *st)
+{
+ struct intel_super *super = st->sb;
+
+ if (!super)
+ return;
+
+ free_imsm(super);
+ st->sb = NULL;
+}
+
+#ifndef MDASSEMBLE
+static int load_super_imsm_all(struct supertype *st, int fd, void **sbp,
+ char *devname, int keep_fd)
+{
+ struct mdinfo *sra;
+ struct intel_super *super;
+ struct mdinfo *sd, *best = NULL;
+ __u32 bestgen = 0;
+ __u32 gen;
+ char nm[20];
+ int dfd;
+ int rv;
+
+ /* check if this disk is a member of an active array */
+ sra = sysfs_read(fd, 0, GET_LEVEL|GET_VERSION|GET_DEVS|GET_STATE);
+ if (!sra)
+ return 1;
+
+ if (sra->array.major_version != -1 ||
+ sra->array.minor_version != -2 ||
+ strcmp(sra->text_version, "imsm") != 0)
+ return 1;
+
+ super = malloc(sizeof(*super));
+ if (!super)
+ return 1;
+
+ /* find the most up to date disk in this array */
+ for (sd = sra->devs; sd; sd = sd->next) {
+ sprintf(nm, "%d:%d", sd->disk.major, sd->disk.minor);
+ dfd = dev_open(nm, keep_fd ? O_RDWR : O_RDONLY);
+ if (!dfd) {
+ free_imsm(super);
+ return 2;
+ }
+ rv = load_imsm_mpb(dfd, super, NULL);
+ if (!keep_fd)
+ close(dfd);
+ if (rv == 0) {
+ gen = __le32_to_cpu(super->mpb->generation_num);
+ if (!best || gen > bestgen) {
+ bestgen = gen;
+ best = sd;
+ }
+ } else {
+ free_imsm(super);
+ return 2;
+ }
+ }
+
+ if (!best) {
+ free_imsm(super);
+ return 1;
+ }
+
+ /* load the most up to date anchor */
+ sprintf(nm, "%d:%d", best->disk.major, best->disk.minor);
+ dfd = dev_open(nm, O_RDONLY);
+ if (!dfd) {
+ free_imsm(super);
+ return 1;
+ }
+ rv = load_imsm_mpb(dfd, super, NULL);
+ close(dfd);
+ if (rv != 0) {
+ free_imsm(super);
+ return 2;
+ }
+
+ /* reset the disk list */
+ free_imsm_disks(super);
+
+ /* populate disk list */
+ for (sd = sra->devs ; sd ; sd = sd->next) {
+ sprintf(nm, "%d:%d", sd->disk.major, sd->disk.minor);
+ dfd = dev_open(nm, keep_fd? O_RDWR : O_RDONLY);
+ if (!dfd) {
+ free_imsm(super);
+ return 2;
+ }
+ load_imsm_disk(dfd, super, NULL, keep_fd);
+ if (!keep_fd)
+ close(dfd);
+ }
+
+ *sbp = super;
+ if (st->ss == NULL) {
+ st->ss = &super_imsm_container;
+ st->minor_version = 0;
+ st->max_devs = IMSM_MAX_DEVICES;
+ }
+
+ return 0;
+}
+#endif
+
+static int load_super_imsm(struct supertype *st, int fd, char *devname)
+{
+ struct intel_super *super;
+ int rv;
+
+#ifndef MDASSEMBLE
+ if (load_super_imsm_all(st, fd, &st->sb, devname, 0) == 0)
+ return 0;
+#endif
+
+ super = malloc(sizeof(*super));
+ if (!super) {
+ fprintf(stderr,
+ Name ": malloc of %zu failed.\n",
+ sizeof(*super));
+ return 1;
+ }
+
+ rv = load_imsm_mpb(fd, super, devname);
+
+ if (rv) {
+ if (devname)
+ fprintf(stderr,
+ Name ": Failed to load all information "
+ "sections on %s\n", devname);
+ free_imsm(super);
+ return rv;
+ }
+
+ st->sb = super;
+ if (st->ss == NULL) {
+ st->ss = &super_imsm;
+ st->minor_version = 0;
+ st->max_devs = IMSM_MAX_DEVICES;
+ }
+
+ return 0;
+}
+
+static int init_zero_imsm(struct supertype *st, mdu_array_info_t *info,
+ unsigned long long size, char *name,
+ char *homehost, int *uuid)
+{
+ printf("%s\n", __FUNCTION__);
+
+ return 0;
+}
+
+static int init_super_imsm(struct supertype *st, mdu_array_info_t *info,
+ unsigned long long size, char *name,
+ char *homehost, int *uuid)
+{
+ printf("%s\n", __FUNCTION__);
+
+ return 0;
+}
+
+static int init_super_imsm_raid(struct supertype *st, mdu_array_info_t *info,
+ unsigned long long size, char *name,
+ char *homehost, int *uuid)
+{
+ printf("%s\n", __FUNCTION__);
+
+ return 0;
+}
+
+static void add_to_super_imsm(struct supertype *st, mdu_disk_info_t *dinfo,
+ int fd, char *devname)
+{
+ printf("%s\n", __FUNCTION__);
+}
+
+static void add_to_super_imsm_raid(struct supertype *st, mdu_disk_info_t *dinfo,
+ int fd, char *devname)
+{
+ printf("%s\n", __FUNCTION__);
+}
+
+static int write_init_super_imsm(struct supertype *st)
+{
+ printf("%s\n", __FUNCTION__);
+
+ return 0;
+}
+
+static int store_zero_imsm(struct supertype *st, int fd)
+{
+ printf("%s\n", __FUNCTION__);
+
+ return 0;
+}
+
+static void getinfo_super_n_container(struct supertype *st, struct mdinfo *info)
+{
+ printf("%s\n", __FUNCTION__);
+}
+
+static void getinfo_super_n_raid(struct supertype *st, struct mdinfo *info)
+{
+ printf("%s\n", __FUNCTION__);
+}
+
+static int validate_geometry_imsm(struct supertype *st, int level, int layout,
+ int raiddisks, int chunk, unsigned long long size,
+ char *subdev, unsigned long long *freesize)
+{
+ printf("%s\n", __FUNCTION__);
+
+ return 0;
+}
+
+static int validate_geometry_imsm_container(struct supertype *st, int level,
+ int layout, int raiddisks, int chunk,
+ unsigned long long size, char *subdev,
+ unsigned long long *freesize)
+{
+ printf("%s\n", __FUNCTION__);
+
+ return 0;
+}
+
+static int validate_geometry_imsm_raid(struct supertype *st, int level,
+ int layout, int raiddisks, int chunk,
+ unsigned long long size, char *subdev,
+ unsigned long long *freesize)
+{
+ printf("%s\n", __FUNCTION__);
+
+ return 0;
+}
+
+
+
+static struct mdinfo *container_content_imsm(struct supertype *st)
+{
+ printf("%s\n", __FUNCTION__);
+
+ return NULL;
+}
+
+struct superswitch super_imsm = {
+#ifndef MDASSEMBLE
+ .examine_super = examine_super_imsm,
+ .brief_examine_super = brief_examine_super_imsm,
+ .detail_super = detail_super_imsm,
+ .brief_detail_super = brief_detail_super_imsm,
+#endif
+ .match_home = match_home_imsm,
+ .uuid_from_super= uuid_from_super_imsm,
+ .getinfo_super = getinfo_super_imsm,
+ .update_super = update_super_imsm,
+
+ .avail_size = avail_size_imsm,
+
+ .compare_super = compare_super_imsm,
+
+ .load_super = load_super_imsm,
+ .init_super = init_zero_imsm,
+ .store_super = store_zero_imsm,
+ .free_super = free_super_imsm,
+ .match_metadata_desc = match_metadata_desc_imsm,
+ .getinfo_super_n = getinfo_super_n_container,
+
+ .validate_geometry = validate_geometry_imsm,
+ .major = 2000,
+ .swapuuid = 0,
+ .external = 1,
+ .text_version = "imsm",
+};
+
+/* super_imsm_container is set by validate_geometry_imsm when given a
+ * device that is not part of any array
+ */
+struct superswitch super_imsm_container = {
+
+ .validate_geometry = validate_geometry_imsm_container,
+ .init_super = init_super_imsm,
+ .add_to_super = add_to_super_imsm,
+ .write_init_super = write_init_super_imsm,
+ .getinfo_super = getinfo_super_imsm,
+ .getinfo_super_n = getinfo_super_n_container,
+ .load_super = load_super_imsm,
+
+#ifndef MDASSEMBLE
+ .examine_super = examine_super_imsm,
+ .brief_examine_super = brief_examine_super_imsm,
+ .detail_super = detail_super_imsm,
+ .brief_detail_super = brief_detail_super_imsm,
+#endif
+
+ .free_super = free_super_imsm,
+
+ .container_content = container_content_imsm,
+
+ .major = 2000,
+ .swapuuid = 0,
+ .external = 1,
+ .text_version = "imsm",
+};
+
+struct superswitch super_imsm_raid = {
+ .update_super = update_super_imsm,
+ .init_super = init_super_imsm_raid,
+ .add_to_super = add_to_super_imsm_raid,
+ .getinfo_super = getinfo_super_imsm_raid,
+ .getinfo_super_n = getinfo_super_n_raid,
+ .write_init_super = write_init_super_imsm,
+
+ .load_super = load_super_imsm,
+ .free_super = free_super_imsm,
+ .match_metadata_desc = match_metadata_desc_imsm_raid,
+
+
+ .validate_geometry = validate_geometry_imsm_raid,
+ .major = 2001,
+ .swapuuid = 0,
+ .external = 2,
+ .text_version = "imsm",
+};
projects / thirdparty / mdadm.git / commitdiff
