summaryrefslogtreecommitdiff
path: root/fs/partitions/msdos.c
diff options
context:
space:
mode:
Diffstat (limited to 'fs/partitions/msdos.c')
-rw-r--r--fs/partitions/msdos.c85
1 files changed, 37 insertions, 48 deletions
diff --git a/fs/partitions/msdos.c b/fs/partitions/msdos.c
index 90be97f1f5a..645a68d8c05 100644
--- a/fs/partitions/msdos.c
+++ b/fs/partitions/msdos.c
@@ -64,7 +64,7 @@ msdos_magic_present(unsigned char *p)
#define AIX_LABEL_MAGIC2 0xC2
#define AIX_LABEL_MAGIC3 0xD4
#define AIX_LABEL_MAGIC4 0xC1
-static int aix_magic_present(unsigned char *p, struct block_device *bdev)
+static int aix_magic_present(struct parsed_partitions *state, unsigned char *p)
{
struct partition *pt = (struct partition *) (p + 0x1be);
Sector sect;
@@ -85,7 +85,7 @@ static int aix_magic_present(unsigned char *p, struct block_device *bdev)
is_extended_partition(pt))
return 0;
}
- d = read_dev_sector(bdev, 7, &sect);
+ d = read_part_sector(state, 7, &sect);
if (d) {
if (d[0] == '_' && d[1] == 'L' && d[2] == 'V' && d[3] == 'M')
ret = 1;
@@ -105,15 +105,14 @@ static int aix_magic_present(unsigned char *p, struct block_device *bdev)
* only for the actual data partitions.
*/
-static void
-parse_extended(struct parsed_partitions *state, struct block_device *bdev,
- sector_t first_sector, sector_t first_size)
+static void parse_extended(struct parsed_partitions *state,
+ sector_t first_sector, sector_t first_size)
{
struct partition *p;
Sector sect;
unsigned char *data;
sector_t this_sector, this_size;
- sector_t sector_size = bdev_logical_block_size(bdev) / 512;
+ sector_t sector_size = bdev_logical_block_size(state->bdev) / 512;
int loopct = 0; /* number of links followed
without finding a data partition */
int i;
@@ -126,7 +125,7 @@ parse_extended(struct parsed_partitions *state, struct block_device *bdev,
return;
if (state->next == state->limit)
return;
- data = read_dev_sector(bdev, this_sector, &sect);
+ data = read_part_sector(state, this_sector, &sect);
if (!data)
return;
@@ -198,9 +197,8 @@ done:
/* james@bpgc.com: Solaris has a nasty indicator: 0x82 which also
indicates linux swap. Be careful before believing this is Solaris. */
-static void
-parse_solaris_x86(struct parsed_partitions *state, struct block_device *bdev,
- sector_t offset, sector_t size, int origin)
+static void parse_solaris_x86(struct parsed_partitions *state,
+ sector_t offset, sector_t size, int origin)
{
#ifdef CONFIG_SOLARIS_X86_PARTITION
Sector sect;
@@ -208,7 +206,7 @@ parse_solaris_x86(struct parsed_partitions *state, struct block_device *bdev,
int i;
short max_nparts;
- v = (struct solaris_x86_vtoc *)read_dev_sector(bdev, offset+1, &sect);
+ v = read_part_sector(state, offset + 1, &sect);
if (!v)
return;
if (le32_to_cpu(v->v_sanity) != SOLARIS_X86_VTOC_SANE) {
@@ -245,16 +243,15 @@ parse_solaris_x86(struct parsed_partitions *state, struct block_device *bdev,
* Create devices for BSD partitions listed in a disklabel, under a
* dos-like partition. See parse_extended() for more information.
*/
-static void
-parse_bsd(struct parsed_partitions *state, struct block_device *bdev,
- sector_t offset, sector_t size, int origin, char *flavour,
- int max_partitions)
+static void parse_bsd(struct parsed_partitions *state,
+ sector_t offset, sector_t size, int origin, char *flavour,
+ int max_partitions)
{
Sector sect;
struct bsd_disklabel *l;
struct bsd_partition *p;
- l = (struct bsd_disklabel *)read_dev_sector(bdev, offset+1, &sect);
+ l = read_part_sector(state, offset + 1, &sect);
if (!l)
return;
if (le32_to_cpu(l->d_magic) != BSD_DISKMAGIC) {
@@ -291,33 +288,28 @@ parse_bsd(struct parsed_partitions *state, struct block_device *bdev,
}
#endif
-static void
-parse_freebsd(struct parsed_partitions *state, struct block_device *bdev,
- sector_t offset, sector_t size, int origin)
+static void parse_freebsd(struct parsed_partitions *state,
+ sector_t offset, sector_t size, int origin)
{
#ifdef CONFIG_BSD_DISKLABEL
- parse_bsd(state, bdev, offset, size, origin,
- "bsd", BSD_MAXPARTITIONS);
+ parse_bsd(state, offset, size, origin, "bsd", BSD_MAXPARTITIONS);
#endif
}
-static void
-parse_netbsd(struct parsed_partitions *state, struct block_device *bdev,
- sector_t offset, sector_t size, int origin)
+static void parse_netbsd(struct parsed_partitions *state,
+ sector_t offset, sector_t size, int origin)
{
#ifdef CONFIG_BSD_DISKLABEL
- parse_bsd(state, bdev, offset, size, origin,
- "netbsd", BSD_MAXPARTITIONS);
+ parse_bsd(state, offset, size, origin, "netbsd", BSD_MAXPARTITIONS);
#endif
}
-static void
-parse_openbsd(struct parsed_partitions *state, struct block_device *bdev,
- sector_t offset, sector_t size, int origin)
+static void parse_openbsd(struct parsed_partitions *state,
+ sector_t offset, sector_t size, int origin)
{
#ifdef CONFIG_BSD_DISKLABEL
- parse_bsd(state, bdev, offset, size, origin,
- "openbsd", OPENBSD_MAXPARTITIONS);
+ parse_bsd(state, offset, size, origin, "openbsd",
+ OPENBSD_MAXPARTITIONS);
#endif
}
@@ -325,16 +317,15 @@ parse_openbsd(struct parsed_partitions *state, struct block_device *bdev,
* Create devices for Unixware partitions listed in a disklabel, under a
* dos-like partition. See parse_extended() for more information.
*/
-static void
-parse_unixware(struct parsed_partitions *state, struct block_device *bdev,
- sector_t offset, sector_t size, int origin)
+static void parse_unixware(struct parsed_partitions *state,
+ sector_t offset, sector_t size, int origin)
{
#ifdef CONFIG_UNIXWARE_DISKLABEL
Sector sect;
struct unixware_disklabel *l;
struct unixware_slice *p;
- l = (struct unixware_disklabel *)read_dev_sector(bdev, offset+29, &sect);
+ l = read_part_sector(state, offset + 29, &sect);
if (!l)
return;
if (le32_to_cpu(l->d_magic) != UNIXWARE_DISKMAGIC ||
@@ -365,9 +356,8 @@ parse_unixware(struct parsed_partitions *state, struct block_device *bdev,
* Anand Krishnamurthy <anandk@wiproge.med.ge.com>
* Rajeev V. Pillai <rajeevvp@yahoo.com>
*/
-static void
-parse_minix(struct parsed_partitions *state, struct block_device *bdev,
- sector_t offset, sector_t size, int origin)
+static void parse_minix(struct parsed_partitions *state,
+ sector_t offset, sector_t size, int origin)
{
#ifdef CONFIG_MINIX_SUBPARTITION
Sector sect;
@@ -375,7 +365,7 @@ parse_minix(struct parsed_partitions *state, struct block_device *bdev,
struct partition *p;
int i;
- data = read_dev_sector(bdev, offset, &sect);
+ data = read_part_sector(state, offset, &sect);
if (!data)
return;
@@ -404,8 +394,7 @@ parse_minix(struct parsed_partitions *state, struct block_device *bdev,
static struct {
unsigned char id;
- void (*parse)(struct parsed_partitions *, struct block_device *,
- sector_t, sector_t, int);
+ void (*parse)(struct parsed_partitions *, sector_t, sector_t, int);
} subtypes[] = {
{FREEBSD_PARTITION, parse_freebsd},
{NETBSD_PARTITION, parse_netbsd},
@@ -417,16 +406,16 @@ static struct {
{0, NULL},
};
-int msdos_partition(struct parsed_partitions *state, struct block_device *bdev)
+int msdos_partition(struct parsed_partitions *state)
{
- sector_t sector_size = bdev_logical_block_size(bdev) / 512;
+ sector_t sector_size = bdev_logical_block_size(state->bdev) / 512;
Sector sect;
unsigned char *data;
struct partition *p;
struct fat_boot_sector *fb;
int slot;
- data = read_dev_sector(bdev, 0, &sect);
+ data = read_part_sector(state, 0, &sect);
if (!data)
return -1;
if (!msdos_magic_present(data + 510)) {
@@ -434,7 +423,7 @@ int msdos_partition(struct parsed_partitions *state, struct block_device *bdev)
return 0;
}
- if (aix_magic_present(data, bdev)) {
+ if (aix_magic_present(state, data)) {
put_dev_sector(sect);
printk( " [AIX]");
return 0;
@@ -503,7 +492,7 @@ int msdos_partition(struct parsed_partitions *state, struct block_device *bdev)
put_partition(state, slot, start, n);
printk(" <");
- parse_extended(state, bdev, start, size);
+ parse_extended(state, start, size);
printk(" >");
continue;
}
@@ -532,8 +521,8 @@ int msdos_partition(struct parsed_partitions *state, struct block_device *bdev)
if (!subtypes[n].parse)
continue;
- subtypes[n].parse(state, bdev, start_sect(p)*sector_size,
- nr_sects(p)*sector_size, slot);
+ subtypes[n].parse(state, start_sect(p) * sector_size,
+ nr_sects(p) * sector_size, slot);
}
put_dev_sector(sect);
return 1;
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-16 22:30:41 +0000