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authorLinus Torvalds <torvalds@linux-foundation.org>2020-03-30 11:20:13 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2020-03-30 11:20:13 -0700
commit10f36b1e80a9f7afdaefe6f0b06dcdf89715eed7 (patch)
treeb47a3af19ab20a7cd6c1578db4afba1a85a8ec5b /block/partitions
parent3a0eb192c01f43dca12628d8b5866d5b8ffb35f5 (diff)
parent654a3667df364f778b9b5bcdfb32e545aceb6a51 (diff)
Merge tag 'for-5.7/block-2020-03-29' of git://git.kernel.dk/linux-block
Pull block updates from Jens Axboe: - Online capacity resizing (Balbir) - Number of hardware queue change fixes (Bart) - null_blk fault injection addition (Bart) - Cleanup of queue allocation, unifying the node/no-node API (Christoph) - Cleanup of genhd, moving code to where it makes sense (Christoph) - Cleanup of the partition handling code (Christoph) - disk stat fixes/improvements (Konstantin) - BFQ improvements (Paolo) - Various fixes and improvements * tag 'for-5.7/block-2020-03-29' of git://git.kernel.dk/linux-block: (72 commits) block: return NULL in blk_alloc_queue() on error block: move bio_map_* to blk-map.c Revert "blkdev: check for valid request queue before issuing flush" block: simplify queue allocation bcache: pass the make_request methods to blk_queue_make_request null_blk: use blk_mq_init_queue_data block: add a blk_mq_init_queue_data helper block: move the ->devnode callback to struct block_device_operations block: move the part_stat* helpers from genhd.h to a new header block: move block layer internals out of include/linux/genhd.h block: move guard_bio_eod to bio.c block: unexport get_gendisk block: unexport disk_map_sector_rcu block: unexport disk_get_part block: mark part_in_flight and part_in_flight_rw static block: mark block_depr static block: factor out requeue handling from dispatch code block/diskstats: replace time_in_queue with sum of request times block/diskstats: accumulate all per-cpu counters in one pass block/diskstats: more accurate approximation of io_ticks for slow disks ...
Diffstat (limited to 'block/partitions')
-rw-r--r--block/partitions/Makefile3
-rw-r--r--block/partitions/acorn.c1
-rw-r--r--block/partitions/acorn.h15
-rw-r--r--block/partitions/aix.c1
-rw-r--r--block/partitions/aix.h2
-rw-r--r--block/partitions/amiga.c11
-rw-r--r--block/partitions/amiga.h7
-rw-r--r--block/partitions/atari.h1
-rw-r--r--block/partitions/check.c198
-rw-r--r--block/partitions/check.h41
-rw-r--r--block/partitions/cmdline.c1
-rw-r--r--block/partitions/cmdline.h3
-rw-r--r--block/partitions/core.c658
-rw-r--r--block/partitions/efi.h3
-rw-r--r--block/partitions/ibm.c1
-rw-r--r--block/partitions/ibm.h2
-rw-r--r--block/partitions/karma.c3
-rw-r--r--block/partitions/karma.h9
-rw-r--r--block/partitions/ldm.c6
-rw-r--r--block/partitions/ldm.h2
-rw-r--r--block/partitions/mac.h1
-rw-r--r--block/partitions/msdos.c172
-rw-r--r--block/partitions/msdos.h9
-rw-r--r--block/partitions/osf.c2
-rw-r--r--block/partitions/osf.h8
-rw-r--r--block/partitions/sgi.c7
-rw-r--r--block/partitions/sgi.h9
-rw-r--r--block/partitions/sun.c9
-rw-r--r--block/partitions/sun.h9
-rw-r--r--block/partitions/sysv68.c1
-rw-r--r--block/partitions/sysv68.h2
-rw-r--r--block/partitions/ultrix.c1
-rw-r--r--block/partitions/ultrix.h6
33 files changed, 862 insertions, 342 deletions
diff --git a/block/partitions/Makefile b/block/partitions/Makefile
index 2f276b677c81..a7f05cdb02a8 100644
--- a/block/partitions/Makefile
+++ b/block/partitions/Makefile
@@ -3,8 +3,7 @@
# Makefile for the linux kernel.
#
-obj-$(CONFIG_BLOCK) := check.o
-
+obj-$(CONFIG_BLOCK) += core.o
obj-$(CONFIG_ACORN_PARTITION) += acorn.o
obj-$(CONFIG_AMIGA_PARTITION) += amiga.o
obj-$(CONFIG_ATARI_PARTITION) += atari.o
diff --git a/block/partitions/acorn.c b/block/partitions/acorn.c
index 7587700fad4a..c64c57b958bf 100644
--- a/block/partitions/acorn.c
+++ b/block/partitions/acorn.c
@@ -11,7 +11,6 @@
#include <linux/adfs_fs.h>
#include "check.h"
-#include "acorn.h"
/*
* Partition types. (Oh for reusability)
diff --git a/block/partitions/acorn.h b/block/partitions/acorn.h
deleted file mode 100644
index 67b06601ca4c..000000000000
--- a/block/partitions/acorn.h
+++ /dev/null
@@ -1,15 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-/*
- * linux/fs/partitions/acorn.h
- *
- * Copyright (C) 1996-2001 Russell King.
- *
- * I _hate_ this partitioning mess - why can't we have one defined
- * format, and everyone stick to it?
- */
-
-int adfspart_check_CUMANA(struct parsed_partitions *state);
-int adfspart_check_ADFS(struct parsed_partitions *state);
-int adfspart_check_ICS(struct parsed_partitions *state);
-int adfspart_check_POWERTEC(struct parsed_partitions *state);
-int adfspart_check_EESOX(struct parsed_partitions *state);
diff --git a/block/partitions/aix.c b/block/partitions/aix.c
index 903f3ed175d0..c7b4fd1a4a97 100644
--- a/block/partitions/aix.c
+++ b/block/partitions/aix.c
@@ -6,7 +6,6 @@
*/
#include "check.h"
-#include "aix.h"
struct lvm_rec {
char lvm_id[4]; /* "_LVM" */
diff --git a/block/partitions/aix.h b/block/partitions/aix.h
deleted file mode 100644
index b4449f0b9f2b..000000000000
--- a/block/partitions/aix.h
+++ /dev/null
@@ -1,2 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-extern int aix_partition(struct parsed_partitions *state);
diff --git a/block/partitions/amiga.c b/block/partitions/amiga.c
index 560936617d9c..9526491d9aed 100644
--- a/block/partitions/amiga.c
+++ b/block/partitions/amiga.c
@@ -14,7 +14,6 @@
#include <linux/affs_hardblocks.h>
#include "check.h"
-#include "amiga.h"
static __inline__ u32
checksum_block(__be32 *m, int size)
@@ -42,9 +41,8 @@ int amiga_partition(struct parsed_partitions *state)
goto rdb_done;
data = read_part_sector(state, blk, &sect);
if (!data) {
- if (warn_no_part)
- pr_err("Dev %s: unable to read RDB block %d\n",
- bdevname(state->bdev, b), blk);
+ pr_err("Dev %s: unable to read RDB block %d\n",
+ bdevname(state->bdev, b), blk);
res = -1;
goto rdb_done;
}
@@ -85,9 +83,8 @@ int amiga_partition(struct parsed_partitions *state)
blk *= blksize; /* Read in terms partition table understands */
data = read_part_sector(state, blk, &sect);
if (!data) {
- if (warn_no_part)
- pr_err("Dev %s: unable to read partition block %d\n",
- bdevname(state->bdev, b), blk);
+ pr_err("Dev %s: unable to read partition block %d\n",
+ bdevname(state->bdev, b), blk);
res = -1;
goto rdb_done;
}
diff --git a/block/partitions/amiga.h b/block/partitions/amiga.h
deleted file mode 100644
index 7e63f4d9d969..000000000000
--- a/block/partitions/amiga.h
+++ /dev/null
@@ -1,7 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-/*
- * fs/partitions/amiga.h
- */
-
-int amiga_partition(struct parsed_partitions *state);
-
diff --git a/block/partitions/atari.h b/block/partitions/atari.h
index 01c2b9457394..678202442fd3 100644
--- a/block/partitions/atari.h
+++ b/block/partitions/atari.h
@@ -34,4 +34,3 @@ struct rootsector
u16 checksum; /* checksum for bootable disks */
} __packed;
-int atari_partition(struct parsed_partitions *state);
diff --git a/block/partitions/check.c b/block/partitions/check.c
deleted file mode 100644
index ffe408fead0c..000000000000
--- a/block/partitions/check.c
+++ /dev/null
@@ -1,198 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * fs/partitions/check.c
- *
- * Code extracted from drivers/block/genhd.c
- * Copyright (C) 1991-1998 Linus Torvalds
- * Re-organised Feb 1998 Russell King
- *
- * We now have independent partition support from the
- * block drivers, which allows all the partition code to
- * be grouped in one location, and it to be mostly self
- * contained.
- *
- * Added needed MAJORS for new pairs, {hdi,hdj}, {hdk,hdl}
- */
-
-#include <linux/slab.h>
-#include <linux/vmalloc.h>
-#include <linux/ctype.h>
-#include <linux/genhd.h>
-
-#include "check.h"
-
-#include "acorn.h"
-#include "amiga.h"
-#include "atari.h"
-#include "ldm.h"
-#include "mac.h"
-#include "msdos.h"
-#include "osf.h"
-#include "sgi.h"
-#include "sun.h"
-#include "ibm.h"
-#include "ultrix.h"
-#include "efi.h"
-#include "karma.h"
-#include "sysv68.h"
-#include "cmdline.h"
-
-int warn_no_part = 1; /*This is ugly: should make genhd removable media aware*/
-
-static int (*check_part[])(struct parsed_partitions *) = {
- /*
- * Probe partition formats with tables at disk address 0
- * that also have an ADFS boot block at 0xdc0.
- */
-#ifdef CONFIG_ACORN_PARTITION_ICS
- adfspart_check_ICS,
-#endif
-#ifdef CONFIG_ACORN_PARTITION_POWERTEC
- adfspart_check_POWERTEC,
-#endif
-#ifdef CONFIG_ACORN_PARTITION_EESOX
- adfspart_check_EESOX,
-#endif
-
- /*
- * Now move on to formats that only have partition info at
- * disk address 0xdc0. Since these may also have stale
- * PC/BIOS partition tables, they need to come before
- * the msdos entry.
- */
-#ifdef CONFIG_ACORN_PARTITION_CUMANA
- adfspart_check_CUMANA,
-#endif
-#ifdef CONFIG_ACORN_PARTITION_ADFS
- adfspart_check_ADFS,
-#endif
-
-#ifdef CONFIG_CMDLINE_PARTITION
- cmdline_partition,
-#endif
-#ifdef CONFIG_EFI_PARTITION
- efi_partition, /* this must come before msdos */
-#endif
-#ifdef CONFIG_SGI_PARTITION
- sgi_partition,
-#endif
-#ifdef CONFIG_LDM_PARTITION
- ldm_partition, /* this must come before msdos */
-#endif
-#ifdef CONFIG_MSDOS_PARTITION
- msdos_partition,
-#endif
-#ifdef CONFIG_OSF_PARTITION
- osf_partition,
-#endif
-#ifdef CONFIG_SUN_PARTITION
- sun_partition,
-#endif
-#ifdef CONFIG_AMIGA_PARTITION
- amiga_partition,
-#endif
-#ifdef CONFIG_ATARI_PARTITION
- atari_partition,
-#endif
-#ifdef CONFIG_MAC_PARTITION
- mac_partition,
-#endif
-#ifdef CONFIG_ULTRIX_PARTITION
- ultrix_partition,
-#endif
-#ifdef CONFIG_IBM_PARTITION
- ibm_partition,
-#endif
-#ifdef CONFIG_KARMA_PARTITION
- karma_partition,
-#endif
-#ifdef CONFIG_SYSV68_PARTITION
- sysv68_partition,
-#endif
- NULL
-};
-
-static struct parsed_partitions *allocate_partitions(struct gendisk *hd)
-{
- struct parsed_partitions *state;
- int nr;
-
- state = kzalloc(sizeof(*state), GFP_KERNEL);
- if (!state)
- return NULL;
-
- nr = disk_max_parts(hd);
- state->parts = vzalloc(array_size(nr, sizeof(state->parts[0])));
- if (!state->parts) {
- kfree(state);
- return NULL;
- }
-
- state->limit = nr;
-
- return state;
-}
-
-void free_partitions(struct parsed_partitions *state)
-{
- vfree(state->parts);
- kfree(state);
-}
-
-struct parsed_partitions *
-check_partition(struct gendisk *hd, struct block_device *bdev)
-{
- struct parsed_partitions *state;
- int i, res, err;
-
- state = allocate_partitions(hd);
- if (!state)
- return NULL;
- state->pp_buf = (char *)__get_free_page(GFP_KERNEL);
- if (!state->pp_buf) {
- free_partitions(state);
- return NULL;
- }
- state->pp_buf[0] = '\0';
-
- state->bdev = bdev;
- disk_name(hd, 0, state->name);
- snprintf(state->pp_buf, PAGE_SIZE, " %s:", state->name);
- if (isdigit(state->name[strlen(state->name)-1]))
- sprintf(state->name, "p");
-
- i = res = err = 0;
- while (!res && check_part[i]) {
- memset(state->parts, 0, state->limit * sizeof(state->parts[0]));
- res = check_part[i++](state);
- if (res < 0) {
- /* We have hit an I/O error which we don't report now.
- * But record it, and let the others do their job.
- */
- err = res;
- res = 0;
- }
-
- }
- if (res > 0) {
- printk(KERN_INFO "%s", state->pp_buf);
-
- free_page((unsigned long)state->pp_buf);
- return state;
- }
- if (state->access_beyond_eod)
- err = -ENOSPC;
- if (err)
- /* The partition is unrecognized. So report I/O errors if there were any */
- res = err;
- if (res) {
- if (warn_no_part)
- strlcat(state->pp_buf,
- " unable to read partition table\n", PAGE_SIZE);
- printk(KERN_INFO "%s", state->pp_buf);
- }
-
- free_page((unsigned long)state->pp_buf);
- free_partitions(state);
- return ERR_PTR(res);
-}
diff --git a/block/partitions/check.h b/block/partitions/check.h
index 6042f769471a..c577e9ee67f0 100644
--- a/block/partitions/check.h
+++ b/block/partitions/check.h
@@ -2,6 +2,7 @@
#include <linux/pagemap.h>
#include <linux/blkdev.h>
#include <linux/genhd.h>
+#include "../blk.h"
/*
* add_gd_partition adds a partitions details to the devices partition
@@ -23,19 +24,14 @@ struct parsed_partitions {
char *pp_buf;
};
-void free_partitions(struct parsed_partitions *state);
+typedef struct {
+ struct page *v;
+} Sector;
-struct parsed_partitions *
-check_partition(struct gendisk *, struct block_device *);
-
-static inline void *read_part_sector(struct parsed_partitions *state,
- sector_t n, Sector *p)
+void *read_part_sector(struct parsed_partitions *state, sector_t n, Sector *p);
+static inline void put_dev_sector(Sector p)
{
- if (n >= get_capacity(state->bdev->bd_disk)) {
- state->access_beyond_eod = true;
- return NULL;
- }
- return read_dev_sector(state->bdev, n, p);
+ put_page(p.v);
}
static inline void
@@ -51,5 +47,24 @@ put_partition(struct parsed_partitions *p, int n, sector_t from, sector_t size)
}
}
-extern int warn_no_part;
-
+/* detection routines go here in alphabetical order: */
+int adfspart_check_ADFS(struct parsed_partitions *state);
+int adfspart_check_CUMANA(struct parsed_partitions *state);
+int adfspart_check_EESOX(struct parsed_partitions *state);
+int adfspart_check_ICS(struct parsed_partitions *state);
+int adfspart_check_POWERTEC(struct parsed_partitions *state);
+int aix_partition(struct parsed_partitions *state);
+int amiga_partition(struct parsed_partitions *state);
+int atari_partition(struct parsed_partitions *state);
+int cmdline_partition(struct parsed_partitions *state);
+int efi_partition(struct parsed_partitions *state);
+int ibm_partition(struct parsed_partitions *);
+int karma_partition(struct parsed_partitions *state);
+int ldm_partition(struct parsed_partitions *state);
+int mac_partition(struct parsed_partitions *state);
+int msdos_partition(struct parsed_partitions *state);
+int osf_partition(struct parsed_partitions *state);
+int sgi_partition(struct parsed_partitions *state);
+int sun_partition(struct parsed_partitions *state);
+int sysv68_partition(struct parsed_partitions *state);
+int ultrix_partition(struct parsed_partitions *state);
diff --git a/block/partitions/cmdline.c b/block/partitions/cmdline.c
index f1edd5452249..8f545c36cde4 100644
--- a/block/partitions/cmdline.c
+++ b/block/partitions/cmdline.c
@@ -18,7 +18,6 @@
#include <linux/cmdline-parser.h>
#include "check.h"
-#include "cmdline.h"
static char *cmdline;
static struct cmdline_parts *bdev_parts;
diff --git a/block/partitions/cmdline.h b/block/partitions/cmdline.h
deleted file mode 100644
index e64a31636a1f..000000000000
--- a/block/partitions/cmdline.h
+++ /dev/null
@@ -1,3 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-
-int cmdline_partition(struct parsed_partitions *state);
diff --git a/block/partitions/core.c b/block/partitions/core.c
new file mode 100644
index 000000000000..b79c4513629b
--- /dev/null
+++ b/block/partitions/core.c
@@ -0,0 +1,658 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 1991-1998 Linus Torvalds
+ * Re-organised Feb 1998 Russell King
+ */
+#include <linux/fs.h>
+#include <linux/slab.h>
+#include <linux/ctype.h>
+#include <linux/genhd.h>
+#include <linux/vmalloc.h>
+#include <linux/blktrace_api.h>
+#include <linux/raid/detect.h>
+#include "check.h"
+
+static int (*check_part[])(struct parsed_partitions *) = {
+ /*
+ * Probe partition formats with tables at disk address 0
+ * that also have an ADFS boot block at 0xdc0.
+ */
+#ifdef CONFIG_ACORN_PARTITION_ICS
+ adfspart_check_ICS,
+#endif
+#ifdef CONFIG_ACORN_PARTITION_POWERTEC
+ adfspart_check_POWERTEC,
+#endif
+#ifdef CONFIG_ACORN_PARTITION_EESOX
+ adfspart_check_EESOX,
+#endif
+
+ /*
+ * Now move on to formats that only have partition info at
+ * disk address 0xdc0. Since these may also have stale
+ * PC/BIOS partition tables, they need to come before
+ * the msdos entry.
+ */
+#ifdef CONFIG_ACORN_PARTITION_CUMANA
+ adfspart_check_CUMANA,
+#endif
+#ifdef CONFIG_ACORN_PARTITION_ADFS
+ adfspart_check_ADFS,
+#endif
+
+#ifdef CONFIG_CMDLINE_PARTITION
+ cmdline_partition,
+#endif
+#ifdef CONFIG_EFI_PARTITION
+ efi_partition, /* this must come before msdos */
+#endif
+#ifdef CONFIG_SGI_PARTITION
+ sgi_partition,
+#endif
+#ifdef CONFIG_LDM_PARTITION
+ ldm_partition, /* this must come before msdos */
+#endif
+#ifdef CONFIG_MSDOS_PARTITION
+ msdos_partition,
+#endif
+#ifdef CONFIG_OSF_PARTITION
+ osf_partition,
+#endif
+#ifdef CONFIG_SUN_PARTITION
+ sun_partition,
+#endif
+#ifdef CONFIG_AMIGA_PARTITION
+ amiga_partition,
+#endif
+#ifdef CONFIG_ATARI_PARTITION
+ atari_partition,
+#endif
+#ifdef CONFIG_MAC_PARTITION
+ mac_partition,
+#endif
+#ifdef CONFIG_ULTRIX_PARTITION
+ ultrix_partition,
+#endif
+#ifdef CONFIG_IBM_PARTITION
+ ibm_partition,
+#endif
+#ifdef CONFIG_KARMA_PARTITION
+ karma_partition,
+#endif
+#ifdef CONFIG_SYSV68_PARTITION
+ sysv68_partition,
+#endif
+ NULL
+};
+
+static struct parsed_partitions *allocate_partitions(struct gendisk *hd)
+{
+ struct parsed_partitions *state;
+ int nr;
+
+ state = kzalloc(sizeof(*state), GFP_KERNEL);
+ if (!state)
+ return NULL;
+
+ nr = disk_max_parts(hd);
+ state->parts = vzalloc(array_size(nr, sizeof(state->parts[0])));
+ if (!state->parts) {
+ kfree(state);
+ return NULL;
+ }
+
+ state->limit = nr;
+
+ return state;
+}
+
+static void free_partitions(struct parsed_partitions *state)
+{
+ vfree(state->parts);
+ kfree(state);
+}
+
+static struct parsed_partitions *check_partition(struct gendisk *hd,
+ struct block_device *bdev)
+{
+ struct parsed_partitions *state;
+ int i, res, err;
+
+ state = allocate_partitions(hd);
+ if (!state)
+ return NULL;
+ state->pp_buf = (char *)__get_free_page(GFP_KERNEL);
+ if (!state->pp_buf) {
+ free_partitions(state);
+ return NULL;
+ }
+ state->pp_buf[0] = '\0';
+
+ state->bdev = bdev;
+ disk_name(hd, 0, state->name);
+ snprintf(state->pp_buf, PAGE_SIZE, " %s:", state->name);
+ if (isdigit(state->name[strlen(state->name)-1]))
+ sprintf(state->name, "p");
+
+ i = res = err = 0;
+ while (!res && check_part[i]) {
+ memset(state->parts, 0, state->limit * sizeof(state->parts[0]));
+ res = check_part[i++](state);
+ if (res < 0) {
+ /*
+ * We have hit an I/O error which we don't report now.
+ * But record it, and let the others do their job.
+ */
+ err = res;
+ res = 0;
+ }
+
+ }
+ if (res > 0) {
+ printk(KERN_INFO "%s", state->pp_buf);
+
+ free_page((unsigned long)state->pp_buf);
+ return state;
+ }
+ if (state->access_beyond_eod)
+ err = -ENOSPC;
+ /*
+ * The partition is unrecognized. So report I/O errors if there were any
+ */
+ if (err)
+ res = err;
+ if (res) {
+ strlcat(state->pp_buf,
+ " unable to read partition table\n", PAGE_SIZE);
+ printk(KERN_INFO "%s", state->pp_buf);
+ }
+
+ free_page((unsigned long)state->pp_buf);
+ free_partitions(state);
+ return ERR_PTR(res);
+}
+
+static ssize_t part_partition_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct hd_struct *p = dev_to_part(dev);
+
+ return sprintf(buf, "%d\n", p->partno);
+}
+
+static ssize_t part_start_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct hd_struct *p = dev_to_part(dev);
+
+ return sprintf(buf, "%llu\n",(unsigned long long)p->start_sect);
+}
+
+static ssize_t part_ro_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct hd_struct *p = dev_to_part(dev);
+ return sprintf(buf, "%d\n", p->policy ? 1 : 0);
+}
+
+static ssize_t part_alignment_offset_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct hd_struct *p = dev_to_part(dev);
+ return sprintf(buf, "%llu\n", (unsigned long long)p->alignment_offset);
+}
+
+static ssize_t part_discard_alignment_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct hd_struct *p = dev_to_part(dev);
+ return sprintf(buf, "%u\n", p->discard_alignment);
+}
+
+static DEVICE_ATTR(partition, 0444, part_partition_show, NULL);
+static DEVICE_ATTR(start, 0444, part_start_show, NULL);
+static DEVICE_ATTR(size, 0444, part_size_show, NULL);
+static DEVICE_ATTR(ro, 0444, part_ro_show, NULL);
+static DEVICE_ATTR(alignment_offset, 0444, part_alignment_offset_show, NULL);
+static DEVICE_ATTR(discard_alignment, 0444, part_discard_alignment_show, NULL);
+static DEVICE_ATTR(stat, 0444, part_stat_show, NULL);
+static DEVICE_ATTR(inflight, 0444, part_inflight_show, NULL);
+#ifdef CONFIG_FAIL_MAKE_REQUEST
+static struct device_attribute dev_attr_fail =
+ __ATTR(make-it-fail, 0644, part_fail_show, part_fail_store);
+#endif
+
+static struct attribute *part_attrs[] = {
+ &dev_attr_partition.attr,
+ &dev_attr_start.attr,
+ &dev_attr_size.attr,
+ &dev_attr_ro.attr,
+ &dev_attr_alignment_offset.attr,
+ &dev_attr_discard_alignment.attr,
+ &dev_attr_stat.attr,
+ &dev_attr_inflight.attr,
+#ifdef CONFIG_FAIL_MAKE_REQUEST
+ &dev_attr_fail.attr,
+#endif
+ NULL
+};
+
+static struct attribute_group part_attr_group = {
+ .attrs = part_attrs,
+};
+
+static const struct attribute_group *part_attr_groups[] = {
+ &part_attr_group,
+#ifdef CONFIG_BLK_DEV_IO_TRACE
+ &blk_trace_attr_group,
+#endif
+ NULL
+};
+
+static void part_release(struct device *dev)
+{
+ struct hd_struct *p = dev_to_part(dev);
+ blk_free_devt(dev->devt);
+ hd_free_part(p);
+ kfree(p);
+}
+
+static int part_uevent(struct device *dev, struct kobj_uevent_env *env)
+{
+ struct hd_struct *part = dev_to_part(dev);
+
+ add_uevent_var(env, "PARTN=%u", part->partno);
+ if (part->info && part->info->volname[0])
+ add_uevent_var(env, "PARTNAME=%s", part->info->volname);
+ return 0;
+}
+
+struct device_type part_type = {
+ .name = "partition",
+ .groups = part_attr_groups,
+ .release = part_release,
+ .uevent = part_uevent,
+};
+
+static void delete_partition_work_fn(struct work_struct *work)
+{
+ struct hd_struct *part = container_of(to_rcu_work(work), struct hd_struct,
+ rcu_work);
+
+ part->start_sect = 0;
+ part->nr_sects = 0;
+ part_stat_set_all(part, 0);
+ put_device(part_to_dev(part));
+}
+
+void __delete_partition(struct percpu_ref *ref)
+{
+ struct hd_struct *part = container_of(ref, struct hd_struct, ref);
+ INIT_RCU_WORK(&part->rcu_work, delete_partition_work_fn);
+ queue_rcu_work(system_wq, &part->rcu_work);
+}
+
+/*
+ * Must be called either with bd_mutex held, before a disk can be opened or
+ * after all disk users are gone.
+ */
+void delete_partition(struct gendisk *disk, int partno)
+{
+ struct disk_part_tbl *ptbl =
+ rcu_dereference_protected(disk->part_tbl, 1);
+ struct hd_struct *part;
+
+ if (partno >= ptbl->len)
+ return;
+
+ part = rcu_dereference_protected(ptbl->part[partno], 1);
+ if (!part)
+ return;
+
+ rcu_assign_pointer(ptbl->part[partno], NULL);
+ rcu_assign_pointer(ptbl->last_lookup, NULL);
+ kobject_put(part->holder_dir);
+ device_del(part_to_dev(part));
+
+ /*
+ * Remove gendisk pointer from idr so that it cannot be looked up
+ * while RCU period before freeing gendisk is running to prevent
+ * use-after-free issues. Note that the device number stays
+ * "in-use" until we really free the gendisk.
+ */
+ blk_invalidate_devt(part_devt(part));
+ hd_struct_kill(part);
+}
+
+static ssize_t whole_disk_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ return 0;
+}
+static DEVICE_ATTR(whole_disk, 0444, whole_disk_show, NULL);
+
+/*
+ * Must be called either with bd_mutex held, before a disk can be opened or
+ * after all disk users are gone.
+ */
+struct hd_struct *add_partition(struct gendisk *disk, int partno,
+ sector_t start, sector_t len, int flags,
+ struct partition_meta_info *info)
+{
+ struct hd_struct *p;
+ dev_t devt = MKDEV(0, 0);
+ struct device *ddev = disk_to_dev(disk);
+ struct device *pdev;
+ struct disk_part_tbl *ptbl;
+ const char *dname;
+ int err;
+
+ /*
+ * Partitions are not supported on zoned block devices that are used as
+ * such.
+ */
+ switch (disk->queue->limits.zoned) {
+ case BLK_ZONED_HM:
+ pr_warn("%s: partitions not supported on host managed zoned block device\n",
+ disk->disk_name);
+ return ERR_PTR(-ENXIO);
+ case BLK_ZONED_HA:
+ pr_info("%s: disabling host aware zoned block device support due to partitions\n",
+ disk->disk_name);
+ disk->queue->limits.zoned = BLK_ZONED_NONE;
+ break;
+ case BLK_ZONED_NONE:
+ break;
+ }
+
+ err = disk_expand_part_tbl(disk, partno);
+ if (err)
+ return ERR_PTR(err);
+ ptbl = rcu_dereference_protected(disk->part_tbl, 1);
+
+ if (ptbl->part[partno])
+ return ERR_PTR(-EBUSY);
+
+ p = kzalloc(sizeof(*p), GFP_KERNEL);
+ if (!p)
+ return ERR_PTR(-EBUSY);
+
+ if (!init_part_stats(p)) {
+ err = -ENOMEM;
+ goto out_free;
+ }
+
+ seqcount_init(&p->nr_sects_seq);
+ pdev = part_to_dev(p);
+
+ p->start_sect = start;
+ p->alignment_offset =
+ queue_limit_alignment_offset(&disk->queue->limits, start);
+ p->discard_alignment =
+ queue_limit_discard_alignment(&disk->queue->limits, start);
+ p->nr_sects = len;
+ p->partno = partno;
+ p->policy = get_disk_ro(disk);
+
+ if (info) {
+ struct partition_meta_info *pinfo;
+
+ pinfo = kzalloc_node(sizeof(*pinfo), GFP_KERNEL, disk->node_id);
+ if (!pinfo) {
+ err = -ENOMEM;
+ goto out_free_stats;
+ }
+ memcpy(pinfo, info, sizeof(*info));
+ p->info = pinfo;
+ }
+
+ dname = dev_name(ddev);
+ if (isdigit(dname[strlen(dname) - 1]))
+ dev_set_name(pdev, "%sp%d", dname, partno);
+ else
+ dev_set_name(pdev, "%s%d", dname, partno);
+
+ device_initialize(pdev);
+ pdev->class = &block_class;
+ pdev->type = &part_type;
+ pdev->parent = ddev;
+
+ err = blk_alloc_devt(p, &devt);
+ if (err)
+ goto out_free_info;
+ pdev->devt = devt;
+
+ /* delay uevent until 'holders' subdir is created */
+ dev_set_uevent_suppress(pdev, 1);
+ err = device_add(pdev);
+ if (err)
+ goto out_put;
+
+ err = -ENOMEM;
+ p->holder_dir = kobject_create_and_add("holders", &pdev->kobj);
+ if (!p->holder_dir)
+ goto out_del;
+
+ dev_set_uevent_suppress(pdev, 0);
+ if (flags & ADDPART_FLAG_WHOLEDISK) {
+ err = device_create_file(pdev, &dev_attr_whole_disk);
+ if (err)
+ goto out_del;
+ }
+
+ err = hd_ref_init(p);
+ if (err) {
+ if (flags & ADDPART_FLAG_WHOLEDISK)
+ goto out_remove_file;
+ goto out_del;
+ }
+
+ /* everything is up and running, commence */
+ rcu_assign_pointer(ptbl->part[partno], p);
+
+ /* suppress uevent if the disk suppresses it */
+ if (!dev_get_uevent_suppress(ddev))
+ kobject_uevent(&pdev->kobj, KOBJ_ADD);
+ return p;
+
+out_free_info:
+ kfree(p->info);
+out_free_stats:
+ free_part_stats(p);
+out_free:
+ kfree(p);
+ return ERR_PTR(err);
+out_remove_file:
+ device_remove_file(pdev, &dev_attr_whole_disk);
+out_del:
+ kobject_put(p->holder_dir);
+ device_del(pdev);
+out_put:
+ put_device(pdev);
+ return ERR_PTR(err);
+}
+
+static bool disk_unlock_native_capacity(struct gendisk *disk)
+{
+ const struct block_device_operations *bdops = disk->fops;
+
+ if (bdops->unlock_native_capacity &&
+ !(disk->flags & GENHD_FL_NATIVE_CAPACITY)) {
+ printk(KERN_CONT "enabling native capacity\n");
+ bdops->unlock_native_capacity(disk);
+ disk->flags |= GENHD_FL_NATIVE_CAPACITY;
+ return true;
+ } else {
+ printk(KERN_CONT "truncated\n");
+ return false;
+ }
+}
+
+int blk_drop_partitions(struct gendisk *disk, struct block_device *bdev)
+{
+ struct disk_part_iter piter;
+ struct hd_struct *part;
+ int res;
+
+ if (!disk_part_scan_enabled(disk))
+ return 0;
+ if (bdev->bd_part_count || bdev->bd_super)
+ return -EBUSY;
+ res = invalidate_partition(disk, 0);
+ if (res)
+ return res;
+
+ disk_part_iter_init(&piter, disk, DISK_PITER_INCL_EMPTY);
+ while ((part = disk_part_iter_next(&piter)))
+ delete_partition(disk, part->partno);
+ disk_part_iter_exit(&piter);
+
+ return 0;
+}
+
+static bool blk_add_partition(struct gendisk *disk, struct block_device *bdev,
+ struct parsed_partitions *state, int p)
+{
+ sector_t size = state->parts[p].size;
+ sector_t from = state->parts[p].from;
+ struct hd_struct *part;
+
+ if (!size)
+ return true;
+
+ if (from >= get_capacity(disk)) {
+ printk(KERN_WARNING
+ "%s: p%d start %llu is beyond EOD, ",
+ disk->disk_name, p, (unsigned long long) from);
+ if (disk_unlock_native_capacity(disk))
+ return false;
+ return true;
+ }
+
+ if (from + size > get_capacity(disk)) {
+ printk(KERN_WARNING
+ "%s: p%d size %llu extends beyond EOD, ",
+ disk->disk_name, p, (unsigned long long) size);
+
+ if (disk_unlock_native_capacity(disk))
+ return false;
+
+ /*
+ * We can not ignore partitions of broken tables created by for
+ * example camera firmware, but we limit them to the end of the
+ * disk to avoid creating invalid block devices.
+ */
+ size = get_capacity(disk) - from;
+ }
+
+ part = add_partition(disk, p, from, size, state->parts[p].flags,
+ &state->parts[p].info);
+ if (IS_ERR(part) && PTR_ERR(part) != -ENXIO) {
+ printk(KERN_ERR " %s: p%d could not be added: %ld\n",
+ disk->disk_name, p, -PTR_ERR(part));
+ return true;
+ }
+
+ if (IS_BUILTIN(CONFIG_BLK_DEV_MD) &&
+ (state->parts[p].flags & ADDPART_FLAG_RAID))
+ md_autodetect_dev(part_to_dev(part)->devt);
+
+ return true;
+}
+
+int blk_add_partitions(struct gendisk *disk, struct block_device *bdev)
+{
+ struct parsed_partitions *state;
+ int ret = -EAGAIN, p, highest;
+
+ if (!disk_part_scan_enabled(disk))
+ return 0;
+
+ state = check_partition(disk, bdev);
+ if (!state)
+ return 0;
+ if (IS_ERR(state)) {
+ /*
+ * I/O error reading the partition table. If we tried to read
+ * beyond EOD, retry after unlocking the native capacity.
+ */
+ if (PTR_ERR(state) == -ENOSPC) {
+ printk(KERN_WARNING "%s: partition table beyond EOD, ",
+ disk->disk_name);
+ if (disk_unlock_native_capacity(disk))
+ return -EAGAIN;
+ }
+ return -EIO;
+ }
+
+ /*
+ * Partitions are not supported on host managed zoned block devices.
+ */
+ if (disk->queue->limits.zoned == BLK_ZONED_HM) {
+ pr_warn("%s: ignoring partition table on host managed zoned block device\n",
+ disk->disk_name);
+ ret = 0;
+ goto out_free_state;
+ }
+
+ /*
+ * If we read beyond EOD, try unlocking native capacity even if the
+ * partition table was successfully read as we could be missing some
+ * partitions.
+ */
+ if (state->access_beyond_eod) {
+ printk(KERN_WARNING
+ "%s: partition table partially beyond EOD, ",
+ disk->disk_name);
+ if (disk_unlock_native_capacity(disk))
+ goto out_free_state;
+ }
+
+ /* tell userspace that the media / partition table may have changed */
+ kobject_uevent(&disk_to_dev(disk)->kobj, KOBJ_CHANGE);
+
+ /*
+ * Detect the highest partition number and preallocate disk->part_tbl.
+ * This is an optimization and not strictly necessary.
+ */
+ for (p = 1, highest = 0; p < state->limit; p++)
+ if (state->parts[p].size)
+ highest = p;
+ disk_expand_part_tbl(disk, highest);
+
+ for (p = 1; p < state->limit; p++)
+ if (!blk_add_partition(disk, bdev, state, p))
+ goto out_free_state;
+
+ ret = 0;
+out_free_state:
+ free_partitions(state);
+ return ret;
+}
+
+void *read_part_sector(struct parsed_partitions *state, sector_t n, Sector *p)
+{
+ struct address_space *mapping = state->bdev->bd_inode->i_mapping;
+ struct page *page;
+
+ if (n >= get_capacity(state->bdev->bd_disk)) {
+ state->access_beyond_eod = true;
+ return NULL;
+ }
+
+ page = read_mapping_page(mapping,
+ (pgoff_t)(n >> (PAGE_SHIFT - 9)), NULL);
+ if (IS_ERR(page))
+ goto out;
+ if (PageError(page))
+ goto out_put_page;
+
+ p->v = page;
+ return (unsigned char *)page_address(page) +
+ ((n & ((1 << (PAGE_SHIFT - 9)) - 1)) << SECTOR_SHIFT);
+out_put_page:
+ put_page(page);
+out:
+ p->v = NULL;
+ return NULL;
+}
diff --git a/block/partitions/efi.h b/block/partitions/efi.h
index 3e8576157575..907bac5ce8f7 100644
--- a/block/partitions/efi.h
+++ b/block/partitions/efi.h
@@ -113,7 +113,4 @@ typedef struct _legacy_mbr {
__le16 signature;
} __packed legacy_mbr;
-/* Functions */
-extern int efi_partition(struct parsed_partitions *state);
-
#endif
diff --git a/block/partitions/ibm.c b/block/partitions/ibm.c
index a5d480f807f3..073faa6a69b8 100644
--- a/block/partitions/ibm.c
+++ b/block/partitions/ibm.c
@@ -15,7 +15,6 @@
#include <asm/vtoc.h>
#include "check.h"
-#include "ibm.h"
union label_t {
diff --git a/block/partitions/ibm.h b/block/partitions/ibm.h
deleted file mode 100644
index 8bf13febb2b6..000000000000
--- a/block/partitions/ibm.h
+++ /dev/null
@@ -1,2 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-int ibm_partition(struct parsed_partitions *);
diff --git a/block/partitions/karma.c b/block/partitions/karma.c
index 59812d705c3d..4d93512f4bd4 100644
--- a/block/partitions/karma.c
+++ b/block/partitions/karma.c
@@ -8,9 +8,10 @@
*/
#include "check.h"
-#include "karma.h"
#include <linux/compiler.h>
+#define KARMA_LABEL_MAGIC 0xAB56
+
int karma_partition(struct parsed_partitions *state)
{
int i;
diff --git a/block/partitions/karma.h b/block/partitions/karma.h
deleted file mode 100644
index 48e074d417fb..000000000000
--- a/block/partitions/karma.h
+++ /dev/null
@@ -1,9 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-/*
- * fs/partitions/karma.h
- */
-
-#define KARMA_LABEL_MAGIC 0xAB56
-
-int karma_partition(struct parsed_partitions *state);
-
diff --git a/block/partitions/ldm.c b/block/partitions/ldm.c
index a2d97ee1908c..6fdfcb40c537 100644
--- a/block/partitions/ldm.c
+++ b/block/partitions/ldm.c
@@ -14,10 +14,10 @@
#include <linux/stringify.h>
#include <linux/kernel.h>
#include <linux/uuid.h>
+#include <linux/msdos_partition.h>
#include "ldm.h"
#include "check.h"
-#include "msdos.h"
/*
* ldm_debug/info/error/crit - Output an error message
@@ -493,7 +493,7 @@ static bool ldm_validate_partition_table(struct parsed_partitions *state)
{
Sector sect;
u8 *data;
- struct partition *p;
+ struct msdos_partition *p;
int i;
bool result = false;
@@ -508,7 +508,7 @@ static bool ldm_validate_partition_table(struct parsed_partitions *state)
if (*(__le16*) (data + 0x01FE) != cpu_to_le16 (MSDOS_LABEL_MAGIC))
goto out;
- p = (struct partition*)(data + 0x01BE);
+ p = (struct msdos_partition *)(data + 0x01BE);
for (i = 0; i < 4; i++, p++)
if (SYS_IND (p) == LDM_PARTITION) {
result = true;
diff --git a/block/partitions/ldm.h b/block/partitions/ldm.h
index 1ca63e97bccc..841580af7f9b 100644
--- a/block/partitions/ldm.h
+++ b/block/partitions/ldm.h
@@ -193,7 +193,5 @@ struct ldmdb { /* Cache of the database */
struct list_head v_part;
};
-int ldm_partition(struct parsed_partitions *state);
-
#endif /* _FS_PT_LDM_H_ */
diff --git a/block/partitions/mac.h b/block/partitions/mac.h
index 453ed2964804..0e41c9da7532 100644
--- a/block/partitions/mac.h
+++ b/block/partitions/mac.h
@@ -42,4 +42,3 @@ struct mac_driver_desc {
/* ... more stuff */
};
-int mac_partition(struct parsed_partitions *state);
diff --git a/block/partitions/msdos.c b/block/partitions/msdos.c
index 82c44f7df911..8f2fcc080264 100644
--- a/block/partitions/msdos.c
+++ b/block/partitions/msdos.c
@@ -18,13 +18,18 @@
* Check partition table on IDE disks for common CHS translations
*
* Re-organised Feb 1998 Russell King
+ *
+ * BSD disklabel support by Yossi Gottlieb <yogo@math.tau.ac.il>
+ * updated by Marc Espie <Marc.Espie@openbsd.org>
+ *
+ * Unixware slices support by Andrzej Krzysztofowicz <ankry@mif.pg.gda.pl>
+ * and Krzysztof G. Baranowski <kgb@knm.org.pl>
*/
#include <linux/msdos_fs.h>
+#include <linux/msdos_partition.h>
#include "check.h"
-#include "msdos.h"
#include "efi.h"
-#include "aix.h"
/*
* Many architectures don't like unaligned accesses, while
@@ -35,17 +40,17 @@
#define SYS_IND(p) get_unaligned(&p->sys_ind)
-static inline sector_t nr_sects(struct partition *p)
+static inline sector_t nr_sects(struct msdos_partition *p)
{
return (sector_t)get_unaligned_le32(&p->nr_sects);
}
-static inline sector_t start_sect(struct partition *p)
+static inline sector_t start_sect(struct msdos_partition *p)
{
return (sector_t)get_unaligned_le32(&p->start_sect);
}
-static inline int is_extended_partition(struct partition *p)
+static inline int is_extended_partition(struct msdos_partition *p)
{
return (SYS_IND(p) == DOS_EXTENDED_PARTITION ||
SYS_IND(p) == WIN98_EXTENDED_PARTITION ||
@@ -68,7 +73,7 @@ msdos_magic_present(unsigned char *p)
#define AIX_LABEL_MAGIC4 0xC1
static int aix_magic_present(struct parsed_partitions *state, unsigned char *p)
{
- struct partition *pt = (struct partition *) (p + 0x1be);
+ struct msdos_partition *pt = (struct msdos_partition *) (p + 0x1be);
Sector sect;
unsigned char *d;
int slot, ret = 0;
@@ -78,13 +83,19 @@ static int aix_magic_present(struct parsed_partitions *state, unsigned char *p)
p[2] == AIX_LABEL_MAGIC3 &&
p[3] == AIX_LABEL_MAGIC4))
return 0;
- /* Assume the partition table is valid if Linux partitions exists */
+
+ /*
+ * Assume the partition table is valid if Linux partitions exists.
+ * Note that old Solaris/x86 partitions use the same indicator as
+ * Linux swap partitions, so we consider that a Linux partition as
+ * well.
+ */
for (slot = 1; slot <= 4; slot++, pt++) {
- if (pt->sys_ind == LINUX_SWAP_PARTITION ||
- pt->sys_ind == LINUX_RAID_PARTITION ||
- pt->sys_ind == LINUX_DATA_PARTITION ||
- pt->sys_ind == LINUX_LVM_PARTITION ||
- is_extended_partition(pt))
+ if (pt->sys_ind == SOLARIS_X86_PARTITION ||
+ pt->sys_ind == LINUX_RAID_PARTITION ||
+ pt->sys_ind == LINUX_DATA_PARTITION ||
+ pt->sys_ind == LINUX_LVM_PARTITION ||
+ is_extended_partition(pt))
return 0;
}
d = read_part_sector(state, 7, &sect);
@@ -122,7 +133,7 @@ static void parse_extended(struct parsed_partitions *state,
sector_t first_sector, sector_t first_size,
u32 disksig)
{
- struct partition *p;
+ struct msdos_partition *p;
Sector sect;
unsigned char *data;
sector_t this_sector, this_size;
@@ -146,7 +157,7 @@ static void parse_extended(struct parsed_partitions *state,
if (!msdos_magic_present(data + 510))
goto done;
- p = (struct partition *) (data + 0x1be);
+ p = (struct msdos_partition *) (data + 0x1be);
/*
* Usually, the first entry is the real data partition,
@@ -210,6 +221,30 @@ done:
put_dev_sector(sect);
}
+#define SOLARIS_X86_NUMSLICE 16
+#define SOLARIS_X86_VTOC_SANE (0x600DDEEEUL)
+
+struct solaris_x86_slice {
+ __le16 s_tag; /* ID tag of partition */
+ __le16 s_flag; /* permission flags */
+ __le32 s_start; /* start sector no of partition */
+ __le32 s_size; /* # of blocks in partition */
+};
+
+struct solaris_x86_vtoc {
+ unsigned int v_bootinfo[3]; /* info needed by mboot */
+ __le32 v_sanity; /* to verify vtoc sanity */
+ __le32 v_version; /* layout version */
+ char v_volume[8]; /* volume name */
+ __le16 v_sectorsz; /* sector size in bytes */
+ __le16 v_nparts; /* number of partitions */
+ unsigned int v_reserved[10]; /* free space */
+ struct solaris_x86_slice
+ v_slice[SOLARIS_X86_NUMSLICE]; /* slice headers */
+ unsigned int timestamp[SOLARIS_X86_NUMSLICE]; /* timestamp */
+ char v_asciilabel[128]; /* for compatibility */
+};
+
/* james@bpgc.com: Solaris has a nasty indicator: 0x82 which also
indicates linux swap. Be careful before believing this is Solaris. */
@@ -265,6 +300,54 @@ static void parse_solaris_x86(struct parsed_partitions *state,
#endif
}
+/* check against BSD src/sys/sys/disklabel.h for consistency */
+#define BSD_DISKMAGIC (0x82564557UL) /* The disk magic number */
+#define BSD_MAXPARTITIONS 16
+#define OPENBSD_MAXPARTITIONS 16
+#define BSD_FS_UNUSED 0 /* disklabel unused partition entry ID */
+struct bsd_disklabel {
+ __le32 d_magic; /* the magic number */
+ __s16 d_type; /* drive type */
+ __s16 d_subtype; /* controller/d_type specific */
+ char d_typename[16]; /* type name, e.g. "eagle" */
+ char d_packname[16]; /* pack identifier */
+ __u32 d_secsize; /* # of bytes per sector */
+ __u32 d_nsectors; /* # of data sectors per track */
+ __u32 d_ntracks; /* # of tracks per cylinder */
+ __u32 d_ncylinders; /* # of data cylinders per unit */
+ __u32 d_secpercyl; /* # of data sectors per cylinder */
+ __u32 d_secperunit; /* # of data sectors per unit */
+ __u16 d_sparespertrack; /* # of spare sectors per track */
+ __u16 d_sparespercyl; /* # of spare sectors per cylinder */
+ __u32 d_acylinders; /* # of alt. cylinders per unit */
+ __u16 d_rpm; /* rotational speed */
+ __u16 d_interleave; /* hardware sector interleave */
+ __u16 d_trackskew; /* sector 0 skew, per track */
+ __u16 d_cylskew; /* sector 0 skew, per cylinder */
+ __u32 d_headswitch; /* head switch time, usec */
+ __u32 d_trkseek; /* track-to-track seek, usec */
+ __u32 d_flags; /* generic flags */
+#define NDDATA 5
+ __u32 d_drivedata[NDDATA]; /* drive-type specific information */
+#define NSPARE 5
+ __u32 d_spare[NSPARE]; /* reserved for future use */
+ __le32 d_magic2; /* the magic number (again) */
+ __le16 d_checksum; /* xor of data incl. partitions */
+
+ /* filesystem and partition information: */
+ __le16 d_npartitions; /* number of partitions in following */
+ __le32 d_bbsize; /* size of boot area at sn0, bytes */
+ __le32 d_sbsize; /* max size of fs superblock, bytes */
+ struct bsd_partition { /* the partition table */
+ __le32 p_size; /* number of sectors in partition */
+ __le32 p_offset; /* starting sector */
+ __le32 p_fsize; /* filesystem basic fragment size */
+ __u8 p_fstype; /* filesystem type, see below */
+ __u8 p_frag; /* filesystem fragments per block */
+ __le16 p_cpg; /* filesystem cylinders per group */
+ } d_partitions[BSD_MAXPARTITIONS]; /* actually may be more */
+};
+
#if defined(CONFIG_BSD_DISKLABEL)
/*
* Create devices for BSD partitions listed in a disklabel, under a
@@ -349,6 +432,51 @@ static void parse_openbsd(struct parsed_partitions *state,
#endif
}
+#define UNIXWARE_DISKMAGIC (0xCA5E600DUL) /* The disk magic number */
+#define UNIXWARE_DISKMAGIC2 (0x600DDEEEUL) /* The slice table magic nr */
+#define UNIXWARE_NUMSLICE 16
+#define UNIXWARE_FS_UNUSED 0 /* Unused slice entry ID */
+
+struct unixware_slice {
+ __le16 s_label; /* label */
+ __le16 s_flags; /* permission flags */
+ __le32 start_sect; /* starting sector */
+ __le32 nr_sects; /* number of sectors in slice */
+};
+
+struct unixware_disklabel {
+ __le32 d_type; /* drive type */
+ __le32 d_magic; /* the magic number */
+ __le32 d_version; /* version number */
+ char d_serial[12]; /* serial number of the device */
+ __le32 d_ncylinders; /* # of data cylinders per device */
+ __le32 d_ntracks; /* # of tracks per cylinder */
+ __le32 d_nsectors; /* # of data sectors per track */
+ __le32 d_secsize; /* # of bytes per sector */
+ __le32 d_part_start; /* # of first sector of this partition*/
+ __le32 d_unknown1[12]; /* ? */
+ __le32 d_alt_tbl; /* byte offset of alternate table */
+ __le32 d_alt_len; /* byte length of alternate table */
+ __le32 d_phys_cyl; /* # of physical cylinders per device */
+ __le32 d_phys_trk; /* # of physical tracks per cylinder */
+ __le32 d_phys_sec; /* # of physical sectors per track */
+ __le32 d_phys_bytes; /* # of physical bytes per sector */
+ __le32 d_unknown2; /* ? */
+ __le32 d_unknown3; /* ? */
+ __le32 d_pad[8]; /* pad */
+
+ struct unixware_vtoc {
+ __le32 v_magic; /* the magic number */
+ __le32 v_version; /* version number */
+ char v_name[8]; /* volume name */
+ __le16 v_nslices; /* # of slices */
+ __le16 v_unknown1; /* ? */
+ __le32 v_reserved[10]; /* reserved */
+ struct unixware_slice
+ v_slice[UNIXWARE_NUMSLICE]; /* slice headers */
+ } vtoc;
+}; /* 408 */
+
/*
* Create devices for Unixware partitions listed in a disklabel, under a
* dos-like partition. See parse_extended() for more information.
@@ -392,6 +520,8 @@ static void parse_unixware(struct parsed_partitions *state,
#endif
}
+#define MINIX_NR_SUBPARTITIONS 4
+
/*
* Minix 2.0.0/2.0.2 subpartition support.
* Anand Krishnamurthy <anandk@wiproge.med.ge.com>
@@ -403,14 +533,14 @@ static void parse_minix(struct parsed_partitions *state,
#ifdef CONFIG_MINIX_SUBPARTITION
Sector sect;
unsigned char *data;
- struct partition *p;
+ struct msdos_partition *p;
int i;
data = read_part_sector(state, offset, &sect);
if (!data)
return;
- p = (struct partition *)(data + 0x1be);
+ p = (struct msdos_partition *)(data + 0x1be);
/* The first sector of a Minix partition can have either
* a secondary MBR describing its subpartitions, or
@@ -454,7 +584,7 @@ int msdos_partition(struct parsed_partitions *state)
sector_t sector_size = bdev_logical_block_size(state->bdev) / 512;
Sector sect;
unsigned char *data;
- struct partition *p;
+ struct msdos_partition *p;
struct fat_boot_sector *fb;
int slot;
u32 disksig;
@@ -488,7 +618,7 @@ int msdos_partition(struct parsed_partitions *state)
* partition table. Reject this in case the boot indicator
* is not 0 or 0x80.
*/
- p = (struct partition *) (data + 0x1be);
+ p = (struct msdos_partition *) (data + 0x1be);
for (slot = 1; slot <= 4; slot++, p++) {
if (p->boot_ind != 0 && p->boot_ind != 0x80) {
/*
@@ -510,7 +640,7 @@ int msdos_partition(struct parsed_partitions *state)
}
#ifdef CONFIG_EFI_PARTITION
- p = (struct partition *) (data + 0x1be);
+ p = (struct msdos_partition *) (data + 0x1be);
for (slot = 1 ; slot <= 4 ; slot++, p++) {
/* If this is an EFI GPT disk, msdos should ignore it. */
if (SYS_IND(p) == EFI_PMBR_OSTYPE_EFI_GPT) {
@@ -519,7 +649,7 @@ int msdos_partition(struct parsed_partitions *state)
}
}
#endif
- p = (struct partition *) (data + 0x1be);
+ p = (struct msdos_partition *) (data + 0x1be);
disksig = le32_to_cpup((__le32 *)(data + 0x1b8));
@@ -566,7 +696,7 @@ int msdos_partition(struct parsed_partitions *state)
strlcat(state->pp_buf, "\n", PAGE_SIZE);
/* second pass - output for each on a separate line */
- p = (struct partition *) (0x1be + data);
+ p = (struct msdos_partition *) (0x1be + data);
for (slot = 1 ; slot <= 4 ; slot++, p++) {
unsigned char id = SYS_IND(p);
int n;
diff --git a/block/partitions/msdos.h b/block/partitions/msdos.h
deleted file mode 100644
index fcacfc486092..000000000000
--- a/block/partitions/msdos.h
+++ /dev/null
@@ -1,9 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-/*
- * fs/partitions/msdos.h
- */
-
-#define MSDOS_LABEL_MAGIC 0xAA55
-
-int msdos_partition(struct parsed_partitions *state);
-
diff --git a/block/partitions/osf.c b/block/partitions/osf.c
index 4b873973d6c0..84560d0765ed 100644
--- a/block/partitions/osf.c
+++ b/block/partitions/osf.c
@@ -9,9 +9,9 @@
*/
#include "check.h"
-#include "osf.h"
#define MAX_OSF_PARTITIONS 18
+#define DISKLABELMAGIC (0x82564557UL)
int osf_partition(struct parsed_partitions *state)
{
diff --git a/block/partitions/osf.h b/block/partitions/osf.h
deleted file mode 100644
index 4d8088e7ea8c..000000000000
--- a/block/partitions/osf.h
+++ /dev/null
@@ -1,8 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-/*
- * fs/partitions/osf.h
- */
-
-#define DISKLABELMAGIC (0x82564557UL)
-
-int osf_partition(struct parsed_partitions *state);
diff --git a/block/partitions/sgi.c b/block/partitions/sgi.c
index d7b421c6e530..4273f1bb0515 100644
--- a/block/partitions/sgi.c
+++ b/block/partitions/sgi.c
@@ -6,7 +6,12 @@
*/
#include "check.h"
-#include "sgi.h"
+
+#define SGI_LABEL_MAGIC 0x0be5a941
+
+enum {
+ LINUX_RAID_PARTITION = 0xfd, /* autodetect RAID partition */
+};
struct sgi_disklabel {
__be32 magic_mushroom; /* Big fat spliff... */
diff --git a/block/partitions/sgi.h b/block/partitions/sgi.h
deleted file mode 100644
index a5b77c3987cf..000000000000
--- a/block/partitions/sgi.h
+++ /dev/null
@@ -1,9 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-/*
- * fs/partitions/sgi.h
- */
-
-extern int sgi_partition(struct parsed_partitions *state);
-
-#define SGI_LABEL_MAGIC 0x0be5a941
-
diff --git a/block/partitions/sun.c b/block/partitions/sun.c
index 90f36724e796..47dc53eccf77 100644
--- a/block/partitions/sun.c
+++ b/block/partitions/sun.c
@@ -9,7 +9,14 @@
*/
#include "check.h"
-#include "sun.h"
+
+#define SUN_LABEL_MAGIC 0xDABE
+#define SUN_VTOC_SANITY 0x600DDEEE
+
+enum {
+ SUN_WHOLE_DISK = 5,
+ LINUX_RAID_PARTITION = 0xfd, /* autodetect RAID partition */
+};
int sun_partition(struct parsed_partitions *state)
{
diff --git a/block/partitions/sun.h b/block/partitions/sun.h
deleted file mode 100644
index ae1b9eed3fd7..000000000000
--- a/block/partitions/sun.h
+++ /dev/null
@@ -1,9 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-/*
- * fs/partitions/sun.h
- */
-
-#define SUN_LABEL_MAGIC 0xDABE
-#define SUN_VTOC_SANITY 0x600DDEEE
-
-int sun_partition(struct parsed_partitions *state);
diff --git a/block/partitions/sysv68.c b/block/partitions/sysv68.c
index 92e810826b01..6f6257fd4eb4 100644
--- a/block/partitions/sysv68.c
+++ b/block/partitions/sysv68.c
@@ -6,7 +6,6 @@
*/
#include "check.h"
-#include "sysv68.h"
/*
* Volume ID structure: on first 256-bytes sector of disk
diff --git a/block/partitions/sysv68.h b/block/partitions/sysv68.h
deleted file mode 100644
index 4fb6b8ec78ae..000000000000
--- a/block/partitions/sysv68.h
+++ /dev/null
@@ -1,2 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-extern int sysv68_partition(struct parsed_partitions *state);
diff --git a/block/partitions/ultrix.c b/block/partitions/ultrix.c
index ecd0d7346c3d..4aaa81043ca0 100644
--- a/block/partitions/ultrix.c
+++ b/block/partitions/ultrix.c
@@ -8,7 +8,6 @@
*/
#include "check.h"
-#include "ultrix.h"
int ultrix_partition(struct parsed_partitions *state)
{
diff --git a/block/partitions/ultrix.h b/block/partitions/ultrix.h
deleted file mode 100644
index 9f676cead222..000000000000
--- a/block/partitions/ultrix.h
+++ /dev/null
@@ -1,6 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-/*
- * fs/partitions/ultrix.h
- */
-
-int ultrix_partition(struct parsed_partitions *state);