diff options
Diffstat (limited to 'block/partitions')
| -rw-r--r-- | block/partitions/Kconfig | 1 | ||||
| -rw-r--r-- | block/partitions/acorn.c | 4 | ||||
| -rw-r--r-- | block/partitions/aix.c | 20 | ||||
| -rw-r--r-- | block/partitions/amiga.c | 7 | ||||
| -rw-r--r-- | block/partitions/atari.c | 4 | ||||
| -rw-r--r-- | block/partitions/check.h | 2 | ||||
| -rw-r--r-- | block/partitions/cmdline.c | 273 | ||||
| -rw-r--r-- | block/partitions/core.c | 73 | ||||
| -rw-r--r-- | block/partitions/efi.c | 48 | ||||
| -rw-r--r-- | block/partitions/ibm.c | 4 | ||||
| -rw-r--r-- | block/partitions/ldm.c | 20 | ||||
| -rw-r--r-- | block/partitions/mac.c | 2 | ||||
| -rw-r--r-- | block/partitions/msdos.c | 6 | ||||
| -rw-r--r-- | block/partitions/sgi.c | 5 | ||||
| -rw-r--r-- | block/partitions/sun.c | 5 |
15 files changed, 360 insertions, 114 deletions
diff --git a/block/partitions/Kconfig b/block/partitions/Kconfig index 6e2a649669e5..278593b8e4e9 100644 --- a/block/partitions/Kconfig +++ b/block/partitions/Kconfig @@ -264,7 +264,6 @@ config SYSV68_PARTITION config CMDLINE_PARTITION bool "Command line partition support" if PARTITION_ADVANCED - select BLK_CMDLINE_PARSER help Say Y here if you want to read the partition table from bootargs. The format for the command line is just like mtdparts. diff --git a/block/partitions/acorn.c b/block/partitions/acorn.c index c64c57b958bf..2c381c694c57 100644 --- a/block/partitions/acorn.c +++ b/block/partitions/acorn.c @@ -275,7 +275,7 @@ int adfspart_check_ADFS(struct parsed_partitions *state) /* * Work out start of non-adfs partition. */ - nr_sects = (state->bdev->bd_inode->i_size >> 9) - start_sect; + nr_sects = get_capacity(state->disk) - start_sect; if (start_sect) { switch (id) { @@ -540,7 +540,7 @@ int adfspart_check_EESOX(struct parsed_partitions *state) if (i != 0) { sector_t size; - size = get_capacity(state->bdev->bd_disk); + size = get_capacity(state->disk); put_partition(state, slot++, start, size - start); strlcat(state->pp_buf, "\n", PAGE_SIZE); } diff --git a/block/partitions/aix.c b/block/partitions/aix.c index c7b4fd1a4a97..85f4b967565e 100644 --- a/block/partitions/aix.c +++ b/block/partitions/aix.c @@ -67,29 +67,13 @@ struct pvd { #define LVM_MAXLVS 256 /** - * last_lba(): return number of last logical block of device - * @bdev: block device - * - * Description: Returns last LBA value on success, 0 on error. - * This is stored (by sd and ide-geometry) in - * the part[0] entry for this disk, and is the number of - * physical sectors available on the disk. - */ -static u64 last_lba(struct block_device *bdev) -{ - if (!bdev || !bdev->bd_inode) - return 0; - return (bdev->bd_inode->i_size >> 9) - 1ULL; -} - -/** * read_lba(): Read bytes from disk, starting at given LBA * @state * @lba * @buffer * @count * - * Description: Reads @count bytes from @state->bdev into @buffer. + * Description: Reads @count bytes from @state->disk into @buffer. * Returns number of bytes read on success, 0 on error. */ static size_t read_lba(struct parsed_partitions *state, u64 lba, u8 *buffer, @@ -97,7 +81,7 @@ static size_t read_lba(struct parsed_partitions *state, u64 lba, u8 *buffer, { size_t totalreadcount = 0; - if (!buffer || lba + count / 512 > last_lba(state->bdev)) + if (!buffer || lba + count / 512 > get_capacity(state->disk) - 1ULL) return 0; while (count) { diff --git a/block/partitions/amiga.c b/block/partitions/amiga.c index 9526491d9aed..5c8624e26a54 100644 --- a/block/partitions/amiga.c +++ b/block/partitions/amiga.c @@ -34,7 +34,6 @@ int amiga_partition(struct parsed_partitions *state) int start_sect, nr_sects, blk, part, res = 0; int blksize = 1; /* Multiplier for disk block size */ int slot = 1; - char b[BDEVNAME_SIZE]; for (blk = 0; ; blk++, put_dev_sector(sect)) { if (blk == RDB_ALLOCATION_LIMIT) @@ -42,7 +41,7 @@ int amiga_partition(struct parsed_partitions *state) data = read_part_sector(state, blk, §); if (!data) { pr_err("Dev %s: unable to read RDB block %d\n", - bdevname(state->bdev, b), blk); + state->disk->disk_name, blk); res = -1; goto rdb_done; } @@ -64,7 +63,7 @@ int amiga_partition(struct parsed_partitions *state) } pr_err("Dev %s: RDB in block %d has bad checksum\n", - bdevname(state->bdev, b), blk); + state->disk->disk_name, blk); } /* blksize is blocks per 512 byte standard block */ @@ -84,7 +83,7 @@ int amiga_partition(struct parsed_partitions *state) data = read_part_sector(state, blk, §); if (!data) { pr_err("Dev %s: unable to read partition block %d\n", - bdevname(state->bdev, b), blk); + state->disk->disk_name, blk); res = -1; goto rdb_done; } diff --git a/block/partitions/atari.c b/block/partitions/atari.c index 2305840c8522..da5994175416 100644 --- a/block/partitions/atari.c +++ b/block/partitions/atari.c @@ -47,7 +47,7 @@ int atari_partition(struct parsed_partitions *state) * ATARI partition scheme supports 512 lba only. If this is not * the case, bail early to avoid miscalculating hd_size. */ - if (bdev_logical_block_size(state->bdev) != 512) + if (queue_logical_block_size(state->disk->queue) != 512) return 0; rs = read_part_sector(state, 0, §); @@ -55,7 +55,7 @@ int atari_partition(struct parsed_partitions *state) return -1; /* Verify this is an Atari rootsector: */ - hd_size = state->bdev->bd_inode->i_size >> 9; + hd_size = get_capacity(state->disk); if (!VALID_PARTITION(&rs->part[0], hd_size) && !VALID_PARTITION(&rs->part[1], hd_size) && !VALID_PARTITION(&rs->part[2], hd_size) && diff --git a/block/partitions/check.h b/block/partitions/check.h index c577e9ee67f0..d5b28e309d64 100644 --- a/block/partitions/check.h +++ b/block/partitions/check.h @@ -9,7 +9,7 @@ * description. */ struct parsed_partitions { - struct block_device *bdev; + struct gendisk *disk; char name[BDEVNAME_SIZE]; struct { sector_t from; diff --git a/block/partitions/cmdline.c b/block/partitions/cmdline.c index 8f545c36cde4..1af610f0ba8c 100644 --- a/block/partitions/cmdline.c +++ b/block/partitions/cmdline.c @@ -14,20 +14,248 @@ * For further information, see "Documentation/block/cmdline-partition.rst" * */ +#include <linux/blkdev.h> +#include <linux/fs.h> +#include <linux/slab.h> +#include "check.h" -#include <linux/cmdline-parser.h> -#include "check.h" +/* partition flags */ +#define PF_RDONLY 0x01 /* Device is read only */ +#define PF_POWERUP_LOCK 0x02 /* Always locked after reset */ + +struct cmdline_subpart { + char name[BDEVNAME_SIZE]; /* partition name, such as 'rootfs' */ + sector_t from; + sector_t size; + int flags; + struct cmdline_subpart *next_subpart; +}; + +struct cmdline_parts { + char name[BDEVNAME_SIZE]; /* block device, such as 'mmcblk0' */ + unsigned int nr_subparts; + struct cmdline_subpart *subpart; + struct cmdline_parts *next_parts; +}; + +static int parse_subpart(struct cmdline_subpart **subpart, char *partdef) +{ + int ret = 0; + struct cmdline_subpart *new_subpart; + + *subpart = NULL; + + new_subpart = kzalloc(sizeof(struct cmdline_subpart), GFP_KERNEL); + if (!new_subpart) + return -ENOMEM; + + if (*partdef == '-') { + new_subpart->size = (sector_t)(~0ULL); + partdef++; + } else { + new_subpart->size = (sector_t)memparse(partdef, &partdef); + if (new_subpart->size < (sector_t)PAGE_SIZE) { + pr_warn("cmdline partition size is invalid."); + ret = -EINVAL; + goto fail; + } + } + + if (*partdef == '@') { + partdef++; + new_subpart->from = (sector_t)memparse(partdef, &partdef); + } else { + new_subpart->from = (sector_t)(~0ULL); + } + + if (*partdef == '(') { + int length; + char *next = strchr(++partdef, ')'); + + if (!next) { + pr_warn("cmdline partition format is invalid."); + ret = -EINVAL; + goto fail; + } + + length = min_t(int, next - partdef, + sizeof(new_subpart->name) - 1); + strncpy(new_subpart->name, partdef, length); + new_subpart->name[length] = '\0'; + + partdef = ++next; + } else + new_subpart->name[0] = '\0'; + + new_subpart->flags = 0; + + if (!strncmp(partdef, "ro", 2)) { + new_subpart->flags |= PF_RDONLY; + partdef += 2; + } + + if (!strncmp(partdef, "lk", 2)) { + new_subpart->flags |= PF_POWERUP_LOCK; + partdef += 2; + } + + *subpart = new_subpart; + return 0; +fail: + kfree(new_subpart); + return ret; +} + +static void free_subpart(struct cmdline_parts *parts) +{ + struct cmdline_subpart *subpart; + + while (parts->subpart) { + subpart = parts->subpart; + parts->subpart = subpart->next_subpart; + kfree(subpart); + } +} + +static int parse_parts(struct cmdline_parts **parts, const char *bdevdef) +{ + int ret = -EINVAL; + char *next; + int length; + struct cmdline_subpart **next_subpart; + struct cmdline_parts *newparts; + char buf[BDEVNAME_SIZE + 32 + 4]; + + *parts = NULL; + + newparts = kzalloc(sizeof(struct cmdline_parts), GFP_KERNEL); + if (!newparts) + return -ENOMEM; + + next = strchr(bdevdef, ':'); + if (!next) { + pr_warn("cmdline partition has no block device."); + goto fail; + } + + length = min_t(int, next - bdevdef, sizeof(newparts->name) - 1); + strncpy(newparts->name, bdevdef, length); + newparts->name[length] = '\0'; + newparts->nr_subparts = 0; + + next_subpart = &newparts->subpart; + + while (next && *(++next)) { + bdevdef = next; + next = strchr(bdevdef, ','); + + length = (!next) ? (sizeof(buf) - 1) : + min_t(int, next - bdevdef, sizeof(buf) - 1); + + strncpy(buf, bdevdef, length); + buf[length] = '\0'; + + ret = parse_subpart(next_subpart, buf); + if (ret) + goto fail; + + newparts->nr_subparts++; + next_subpart = &(*next_subpart)->next_subpart; + } + + if (!newparts->subpart) { + pr_warn("cmdline partition has no valid partition."); + ret = -EINVAL; + goto fail; + } + + *parts = newparts; + + return 0; +fail: + free_subpart(newparts); + kfree(newparts); + return ret; +} + +static void cmdline_parts_free(struct cmdline_parts **parts) +{ + struct cmdline_parts *next_parts; + + while (*parts) { + next_parts = (*parts)->next_parts; + free_subpart(*parts); + kfree(*parts); + *parts = next_parts; + } +} + +static int cmdline_parts_parse(struct cmdline_parts **parts, + const char *cmdline) +{ + int ret; + char *buf; + char *pbuf; + char *next; + struct cmdline_parts **next_parts; + + *parts = NULL; + + next = pbuf = buf = kstrdup(cmdline, GFP_KERNEL); + if (!buf) + return -ENOMEM; + + next_parts = parts; + + while (next && *pbuf) { + next = strchr(pbuf, ';'); + if (next) + *next = '\0'; + + ret = parse_parts(next_parts, pbuf); + if (ret) + goto fail; + + if (next) + pbuf = ++next; + + next_parts = &(*next_parts)->next_parts; + } + + if (!*parts) { + pr_warn("cmdline partition has no valid partition."); + ret = -EINVAL; + goto fail; + } + + ret = 0; +done: + kfree(buf); + return ret; + +fail: + cmdline_parts_free(parts); + goto done; +} + +static struct cmdline_parts *cmdline_parts_find(struct cmdline_parts *parts, + const char *bdev) +{ + while (parts && strncmp(bdev, parts->name, sizeof(parts->name))) + parts = parts->next_parts; + return parts; +} static char *cmdline; static struct cmdline_parts *bdev_parts; -static int add_part(int slot, struct cmdline_subpart *subpart, void *param) +static int add_part(int slot, struct cmdline_subpart *subpart, + struct parsed_partitions *state) { int label_min; struct partition_meta_info *info; char tmp[sizeof(info->volname) + 4]; - struct parsed_partitions *state = (struct parsed_partitions *)param; if (slot >= state->limit) return 1; @@ -50,6 +278,35 @@ static int add_part(int slot, struct cmdline_subpart *subpart, void *param) return 0; } +static int cmdline_parts_set(struct cmdline_parts *parts, sector_t disk_size, + struct parsed_partitions *state) +{ + sector_t from = 0; + struct cmdline_subpart *subpart; + int slot = 1; + + for (subpart = parts->subpart; subpart; + subpart = subpart->next_subpart, slot++) { + if (subpart->from == (sector_t)(~0ULL)) + subpart->from = from; + else + from = subpart->from; + + if (from >= disk_size) + break; + + if (subpart->size > (disk_size - from)) + subpart->size = disk_size - from; + + from += subpart->size; + + if (add_part(slot, subpart, state)) + break; + } + + return slot; +} + static int __init cmdline_parts_setup(char *s) { cmdline = s; @@ -123,7 +380,6 @@ static void cmdline_parts_verifier(int slot, struct parsed_partitions *state) int cmdline_partition(struct parsed_partitions *state) { sector_t disk_size; - char bdev[BDEVNAME_SIZE]; struct cmdline_parts *parts; if (cmdline) { @@ -140,14 +396,13 @@ int cmdline_partition(struct parsed_partitions *state) if (!bdev_parts) return 0; - bdevname(state->bdev, bdev); - parts = cmdline_parts_find(bdev_parts, bdev); + parts = cmdline_parts_find(bdev_parts, state->disk->disk_name); if (!parts) return 0; - disk_size = get_capacity(state->bdev->bd_disk) << 9; + disk_size = get_capacity(state->disk) << 9; - cmdline_parts_set(parts, disk_size, 1, add_part, (void *)state); + cmdline_parts_set(parts, disk_size, state); cmdline_parts_verifier(1, state); strlcat(state->pp_buf, "\n", PAGE_SIZE); diff --git a/block/partitions/core.c b/block/partitions/core.c index 4230d4f71879..58c4c362c94f 100644 --- a/block/partitions/core.c +++ b/block/partitions/core.c @@ -135,8 +135,8 @@ static struct parsed_partitions *check_partition(struct gendisk *hd) } state->pp_buf[0] = '\0'; - state->bdev = hd->part0; - disk_name(hd, 0, state->name); + state->disk = hd; + snprintf(state->name, BDEVNAME_SIZE, "%s", hd->disk_name); snprintf(state->pp_buf, PAGE_SIZE, " %s:", state->name); if (isdigit(state->name[strlen(state->name)-1])) sprintf(state->name, "p"); @@ -259,9 +259,8 @@ static const struct attribute_group *part_attr_groups[] = { static void part_release(struct device *dev) { - if (MAJOR(dev->devt) == BLOCK_EXT_MAJOR) - blk_free_ext_minor(MINOR(dev->devt)); - bdput(dev_to_bdev(dev)); + put_disk(dev_to_bdev(dev)->bd_disk); + iput(dev_to_bdev(dev)->bd_inode); } static int part_uevent(struct device *dev, struct kobj_uevent_env *env) @@ -281,12 +280,10 @@ struct device_type part_type = { .uevent = part_uevent, }; -/* - * Must be called either with open_mutex held, before a disk can be opened or - * after all disk users are gone. - */ static void delete_partition(struct block_device *part) { + lockdep_assert_held(&part->bd_disk->open_mutex); + fsync_bdev(part); __invalidate_device(part, true); @@ -351,20 +348,17 @@ static struct block_device *add_partition(struct gendisk *disk, int partno, if (xa_load(&disk->part_tbl, partno)) return ERR_PTR(-EBUSY); + /* ensure we always have a reference to the whole disk */ + get_device(disk_to_dev(disk)); + + err = -ENOMEM; bdev = bdev_alloc(disk, partno); if (!bdev) - return ERR_PTR(-ENOMEM); + goto out_put_disk; bdev->bd_start_sect = start; bdev_set_nr_sectors(bdev, len); - if (info) { - err = -ENOMEM; - bdev->bd_meta_info = kmemdup(info, sizeof(*info), GFP_KERNEL); - if (!bdev->bd_meta_info) - goto out_bdput; - } - pdev = &bdev->bd_device; dname = dev_name(ddev); if (isdigit(dname[strlen(dname) - 1])) @@ -388,6 +382,13 @@ static struct block_device *add_partition(struct gendisk *disk, int partno, } pdev->devt = devt; + if (info) { + err = -ENOMEM; + bdev->bd_meta_info = kmemdup(info, sizeof(*info), GFP_KERNEL); + if (!bdev->bd_meta_info) + goto out_put; + } + /* delay uevent until 'holders' subdir is created */ dev_set_uevent_suppress(pdev, 1); err = device_add(pdev); @@ -417,14 +418,13 @@ static struct block_device *add_partition(struct gendisk *disk, int partno, kobject_uevent(&pdev->kobj, KOBJ_ADD); return bdev; -out_bdput: - bdput(bdev); - return ERR_PTR(err); out_del: kobject_put(bdev->bd_holder_dir); device_del(pdev); out_put: put_device(pdev); +out_put_disk: + put_disk(disk); return ERR_PTR(err); } @@ -449,15 +449,14 @@ static bool partition_overlaps(struct gendisk *disk, sector_t start, return overlap; } -int bdev_add_partition(struct block_device *bdev, int partno, - sector_t start, sector_t length) +int bdev_add_partition(struct gendisk *disk, int partno, sector_t start, + sector_t length) { struct block_device *part; - struct gendisk *disk = bdev->bd_disk; int ret; mutex_lock(&disk->open_mutex); - if (!(disk->flags & GENHD_FL_UP)) { + if (!disk_live(disk)) { ret = -ENXIO; goto out; } @@ -475,13 +474,13 @@ out: return ret; } -int bdev_del_partition(struct block_device *bdev, int partno) +int bdev_del_partition(struct gendisk *disk, int partno) { struct block_device *part = NULL; int ret = -ENXIO; - mutex_lock(&bdev->bd_disk->open_mutex); - part = xa_load(&bdev->bd_disk->part_tbl, partno); + mutex_lock(&disk->open_mutex); + part = xa_load(&disk->part_tbl, partno); if (!part) goto out_unlock; @@ -492,18 +491,18 @@ int bdev_del_partition(struct block_device *bdev, int partno) delete_partition(part); ret = 0; out_unlock: - mutex_unlock(&bdev->bd_disk->open_mutex); + mutex_unlock(&disk->open_mutex); return ret; } -int bdev_resize_partition(struct block_device *bdev, int partno, - sector_t start, sector_t length) +int bdev_resize_partition(struct gendisk *disk, int partno, sector_t start, + sector_t length) { struct block_device *part = NULL; int ret = -ENXIO; - mutex_lock(&bdev->bd_disk->open_mutex); - part = xa_load(&bdev->bd_disk->part_tbl, partno); + mutex_lock(&disk->open_mutex); + part = xa_load(&disk->part_tbl, partno); if (!part) goto out_unlock; @@ -512,14 +511,14 @@ int bdev_resize_partition(struct block_device *bdev, int partno, goto out_unlock; ret = -EBUSY; - if (partition_overlaps(bdev->bd_disk, start, length, partno)) + if (partition_overlaps(disk, start, length, partno)) goto out_unlock; bdev_set_nr_sectors(part, length); ret = 0; out_unlock: - mutex_unlock(&bdev->bd_disk->open_mutex); + mutex_unlock(&disk->open_mutex); return ret; } @@ -667,7 +666,7 @@ int bdev_disk_changed(struct gendisk *disk, bool invalidate) lockdep_assert_held(&disk->open_mutex); - if (!(disk->flags & GENHD_FL_UP)) + if (!disk_live(disk)) return -ENXIO; rescan: @@ -715,10 +714,10 @@ EXPORT_SYMBOL_GPL(bdev_disk_changed); void *read_part_sector(struct parsed_partitions *state, sector_t n, Sector *p) { - struct address_space *mapping = state->bdev->bd_inode->i_mapping; + struct address_space *mapping = state->disk->part0->bd_inode->i_mapping; struct page *page; - if (n >= get_capacity(state->bdev->bd_disk)) { + if (n >= get_capacity(state->disk)) { state->access_beyond_eod = true; return NULL; } diff --git a/block/partitions/efi.c b/block/partitions/efi.c index e2716792ecc1..7ca5c4c374d4 100644 --- a/block/partitions/efi.c +++ b/block/partitions/efi.c @@ -124,19 +124,17 @@ efi_crc32(const void *buf, unsigned long len) /** * last_lba(): return number of last logical block of device - * @bdev: block device + * @disk: block device * * Description: Returns last LBA value on success, 0 on error. * This is stored (by sd and ide-geometry) in * the part[0] entry for this disk, and is the number of * physical sectors available on the disk. */ -static u64 last_lba(struct block_device *bdev) +static u64 last_lba(struct gendisk *disk) { - if (!bdev || !bdev->bd_inode) - return 0; - return div_u64(bdev->bd_inode->i_size, - bdev_logical_block_size(bdev)) - 1ULL; + return div_u64(disk->part0->bd_inode->i_size, + queue_logical_block_size(disk->queue)) - 1ULL; } static inline int pmbr_part_valid(gpt_mbr_record *part) @@ -231,17 +229,17 @@ done: * @buffer: destination buffer * @count: bytes to read * - * Description: Reads @count bytes from @state->bdev into @buffer. + * Description: Reads @count bytes from @state->disk into @buffer. * Returns number of bytes read on success, 0 on error. */ static size_t read_lba(struct parsed_partitions *state, u64 lba, u8 *buffer, size_t count) { size_t totalreadcount = 0; - struct block_device *bdev = state->bdev; - sector_t n = lba * (bdev_logical_block_size(bdev) / 512); + sector_t n = lba * + (queue_logical_block_size(state->disk->queue) / 512); - if (!buffer || lba > last_lba(bdev)) + if (!buffer || lba > last_lba(state->disk)) return 0; while (count) { @@ -302,14 +300,14 @@ static gpt_entry *alloc_read_gpt_entries(struct parsed_partitions *state, * @lba: the Logical Block Address of the partition table * * Description: returns GPT header on success, NULL on error. Allocates - * and fills a GPT header starting at @ from @state->bdev. + * and fills a GPT header starting at @ from @state->disk. * Note: remember to free gpt when finished with it. */ static gpt_header *alloc_read_gpt_header(struct parsed_partitions *state, u64 lba) { gpt_header *gpt; - unsigned ssz = bdev_logical_block_size(state->bdev); + unsigned ssz = queue_logical_block_size(state->disk->queue); gpt = kmalloc(ssz, GFP_KERNEL); if (!gpt) @@ -356,10 +354,10 @@ static int is_gpt_valid(struct parsed_partitions *state, u64 lba, /* Check the GUID Partition Table header size is too big */ if (le32_to_cpu((*gpt)->header_size) > - bdev_logical_block_size(state->bdev)) { + queue_logical_block_size(state->disk->queue)) { pr_debug("GUID Partition Table Header size is too large: %u > %u\n", le32_to_cpu((*gpt)->header_size), - bdev_logical_block_size(state->bdev)); + queue_logical_block_size(state->disk->queue)); goto fail; } @@ -395,7 +393,7 @@ static int is_gpt_valid(struct parsed_partitions *state, u64 lba, /* Check the first_usable_lba and last_usable_lba are * within the disk. */ - lastlba = last_lba(state->bdev); + lastlba = last_lba(state->disk); if (le64_to_cpu((*gpt)->first_usable_lba) > lastlba) { pr_debug("GPT: first_usable_lba incorrect: %lld > %lld\n", (unsigned long long)le64_to_cpu((*gpt)->first_usable_lba), @@ -587,13 +585,15 @@ static int find_valid_gpt(struct parsed_partitions *state, gpt_header **gpt, gpt_header *pgpt = NULL, *agpt = NULL; gpt_entry *pptes = NULL, *aptes = NULL; legacy_mbr *legacymbr; - sector_t total_sectors = i_size_read(state->bdev->bd_inode) >> 9; + struct gendisk *disk = state->disk; + const struct block_device_operations *fops = disk->fops; + sector_t total_sectors = get_capacity(state->disk); u64 lastlba; if (!ptes) return 0; - lastlba = last_lba(state->bdev); + lastlba = last_lba(state->disk); if (!force_gpt) { /* This will be added to the EFI Spec. per Intel after v1.02. */ legacymbr = kzalloc(sizeof(*legacymbr), GFP_KERNEL); @@ -621,6 +621,16 @@ static int find_valid_gpt(struct parsed_partitions *state, gpt_header **gpt, if (!good_agpt && force_gpt) good_agpt = is_gpt_valid(state, lastlba, &agpt, &aptes); + if (!good_agpt && force_gpt && fops->alternative_gpt_sector) { + sector_t agpt_sector; + int err; + + err = fops->alternative_gpt_sector(disk, &agpt_sector); + if (!err) + good_agpt = is_gpt_valid(state, agpt_sector, + &agpt, &aptes); + } + /* The obviously unsuccessful case */ if (!good_pgpt && !good_agpt) goto fail; @@ -705,7 +715,7 @@ int efi_partition(struct parsed_partitions *state) gpt_header *gpt = NULL; gpt_entry *ptes = NULL; u32 i; - unsigned ssz = bdev_logical_block_size(state->bdev) / 512; + unsigned ssz = queue_logical_block_size(state->disk->queue) / 512; if (!find_valid_gpt(state, &gpt, &ptes) || !gpt || !ptes) { kfree(gpt); @@ -722,7 +732,7 @@ int efi_partition(struct parsed_partitions *state) u64 size = le64_to_cpu(ptes[i].ending_lba) - le64_to_cpu(ptes[i].starting_lba) + 1ULL; - if (!is_pte_valid(&ptes[i], last_lba(state->bdev))) + if (!is_pte_valid(&ptes[i], last_lba(state->disk))) continue; put_partition(state, i+1, start * ssz, size * ssz); diff --git a/block/partitions/ibm.c b/block/partitions/ibm.c index 4b044e620d35..9bca396aef4a 100644 --- a/block/partitions/ibm.c +++ b/block/partitions/ibm.c @@ -290,8 +290,8 @@ static int find_cms1_partitions(struct parsed_partitions *state, int ibm_partition(struct parsed_partitions *state) { int (*fn)(struct gendisk *disk, dasd_information2_t *info); - struct block_device *bdev = state->bdev; - struct gendisk *disk = bdev->bd_disk; + struct gendisk *disk = state->disk; + struct block_device *bdev = disk->part0; int blocksize, res; loff_t i_size, offset, size; dasd_information2_t *info; diff --git a/block/partitions/ldm.c b/block/partitions/ldm.c index cc86534c80ad..27f6c7d9c776 100644 --- a/block/partitions/ldm.c +++ b/block/partitions/ldm.c @@ -1,5 +1,5 @@ // SPDX-License-Identifier: GPL-2.0-or-later -/** +/* * ldm - Support for Windows Logical Disk Manager (Dynamic Disks) * * Copyright (C) 2001,2002 Richard Russon <ldm@flatcap.org> @@ -304,7 +304,7 @@ static bool ldm_validate_privheads(struct parsed_partitions *state, } } - num_sects = state->bdev->bd_inode->i_size >> 9; + num_sects = get_capacity(state->disk); if ((ph[0]->config_start > num_sects) || ((ph[0]->config_start + ph[0]->config_size) > num_sects)) { @@ -339,11 +339,11 @@ out: /** * ldm_validate_tocblocks - Validate the table of contents and its backups * @state: Partition check state including device holding the LDM Database - * @base: Offset, into @state->bdev, of the database + * @base: Offset, into @state->disk, of the database * @ldb: Cache of the database structures * * Find and compare the four tables of contents of the LDM Database stored on - * @state->bdev and return the parsed information into @toc1. + * @state->disk and return the parsed information into @toc1. * * The offsets and sizes of the configs are range-checked against a privhead. * @@ -486,8 +486,8 @@ out: * only likely to happen if the underlying device is strange. If that IS * the case we should return zero to let someone else try. * - * Return: 'true' @state->bdev is a dynamic disk - * 'false' @state->bdev is not a dynamic disk, or an error occurred + * Return: 'true' @state->disk is a dynamic disk + * 'false' @state->disk is not a dynamic disk, or an error occurred */ static bool ldm_validate_partition_table(struct parsed_partitions *state) { @@ -1340,7 +1340,7 @@ static bool ldm_frag_commit (struct list_head *frags, struct ldmdb *ldb) /** * ldm_get_vblks - Read the on-disk database of VBLKs into memory * @state: Partition check state including device holding the LDM Database - * @base: Offset, into @state->bdev, of the database + * @base: Offset, into @state->disk, of the database * @ldb: Cache of the database structures * * To use the information from the VBLKs, they need to be read from the disk, @@ -1432,10 +1432,10 @@ static void ldm_free_vblks (struct list_head *lh) * example, if the device is hda, we would have: hda1: LDM database, hda2, hda3, * and so on: the actual data containing partitions. * - * Return: 1 Success, @state->bdev is a dynamic disk and we handled it - * 0 Success, @state->bdev is not a dynamic disk + * Return: 1 Success, @state->disk is a dynamic disk and we handled it + * 0 Success, @state->disk is not a dynamic disk * -1 An error occurred before enough information had been read - * Or @state->bdev is a dynamic disk, but it may be corrupted + * Or @state->disk is a dynamic disk, but it may be corrupted */ int ldm_partition(struct parsed_partitions *state) { diff --git a/block/partitions/mac.c b/block/partitions/mac.c index b6095335636c..7b521df00a39 100644 --- a/block/partitions/mac.c +++ b/block/partitions/mac.c @@ -133,7 +133,7 @@ int mac_partition(struct parsed_partitions *state) } #ifdef CONFIG_PPC_PMAC if (found_root_goodness) - note_bootable_part(state->bdev->bd_dev, found_root, + note_bootable_part(state->disk->part0->bd_dev, found_root, found_root_goodness); #endif diff --git a/block/partitions/msdos.c b/block/partitions/msdos.c index f5102596a984..b5d5c229cc3b 100644 --- a/block/partitions/msdos.c +++ b/block/partitions/msdos.c @@ -135,11 +135,12 @@ static void parse_extended(struct parsed_partitions *state, Sector sect; unsigned char *data; sector_t this_sector, this_size; - sector_t sector_size = bdev_logical_block_size(state->bdev) / 512; + sector_t sector_size; int loopct = 0; /* number of links followed without finding a data partition */ int i; + sector_size = queue_logical_block_size(state->disk->queue) / 512; this_sector = first_sector; this_size = first_size; @@ -579,7 +580,7 @@ static struct { int msdos_partition(struct parsed_partitions *state) { - sector_t sector_size = bdev_logical_block_size(state->bdev) / 512; + sector_t sector_size; Sector sect; unsigned char *data; struct msdos_partition *p; @@ -587,6 +588,7 @@ int msdos_partition(struct parsed_partitions *state) int slot; u32 disksig; + sector_size = queue_logical_block_size(state->disk->queue) / 512; data = read_part_sector(state, 0, §); if (!data) return -1; diff --git a/block/partitions/sgi.c b/block/partitions/sgi.c index 4273f1bb0515..9cc6b8c1eea4 100644 --- a/block/partitions/sgi.c +++ b/block/partitions/sgi.c @@ -43,7 +43,6 @@ int sgi_partition(struct parsed_partitions *state) Sector sect; struct sgi_disklabel *label; struct sgi_partition *p; - char b[BDEVNAME_SIZE]; label = read_part_sector(state, 0, §); if (!label) @@ -52,7 +51,7 @@ int sgi_partition(struct parsed_partitions *state) magic = label->magic_mushroom; if(be32_to_cpu(magic) != SGI_LABEL_MAGIC) { /*printk("Dev %s SGI disklabel: bad magic %08x\n", - bdevname(bdev, b), be32_to_cpu(magic));*/ + state->disk->disk_name, be32_to_cpu(magic));*/ put_dev_sector(sect); return 0; } @@ -63,7 +62,7 @@ int sgi_partition(struct parsed_partitions *state) } if(csum) { printk(KERN_WARNING "Dev %s SGI disklabel: csum bad, label corrupted\n", - bdevname(state->bdev, b)); + state->disk->disk_name); put_dev_sector(sect); return 0; } diff --git a/block/partitions/sun.c b/block/partitions/sun.c index 47dc53eccf77..ddf9e6def4b2 100644 --- a/block/partitions/sun.c +++ b/block/partitions/sun.c @@ -65,7 +65,6 @@ int sun_partition(struct parsed_partitions *state) } * label; struct sun_partition *p; unsigned long spc; - char b[BDEVNAME_SIZE]; int use_vtoc; int nparts; @@ -76,7 +75,7 @@ int sun_partition(struct parsed_partitions *state) p = label->partitions; if (be16_to_cpu(label->magic) != SUN_LABEL_MAGIC) { /* printk(KERN_INFO "Dev %s Sun disklabel: bad magic %04x\n", - bdevname(bdev, b), be16_to_cpu(label->magic)); */ + state->disk->disk_name, be16_to_cpu(label->magic)); */ put_dev_sector(sect); return 0; } @@ -86,7 +85,7 @@ int sun_partition(struct parsed_partitions *state) csum ^= *ush--; if (csum) { printk("Dev %s Sun disklabel: Csum bad, label corrupted\n", - bdevname(state->bdev, b)); + state->disk->disk_name); put_dev_sector(sect); return 0; } |