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[PATCH parted 3/5] dasd: cache real_sector_size in linux_probe
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From: |
Hans de Goede |
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Subject: |
[PATCH parted 3/5] dasd: cache real_sector_size in linux_probe |
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Date: |
Tue, 3 Nov 2009 13:08:58 +0100 |
dasd_alloc was doing an ioctl to get the real sector size for the dasd
device (we are faking 512 bytes sectors), but when called directly
from ped_disk_new_fresh(), the device is not open causing this to fail.
This patch fixes things by caching the real_sector_size in the linux
arch_specific data and making the dasd label handling use this.
libparted/arch/linux.c(_device_set_sector_size): Cache real sector size.
(_device_set_sector_size, init_dasd, linux_new): Only compile dasd code
on s390 and s390x.
---
libparted/arch/linux.c | 7 +++++++
libparted/labels/dasd.c | 34 +++++++++++-----------------------
2 files changed, 18 insertions(+), 23 deletions(-)
diff --git a/libparted/arch/linux.c b/libparted/arch/linux.c
index a87f7e2..d5d3597 100644
--- a/libparted/arch/linux.c
+++ b/libparted/arch/linux.c
@@ -654,10 +654,13 @@ _device_set_sector_size (PedDevice* dev)
}
#endif
+#if defined __s390__ || defined __s390x__
/* Return PED_SECTOR_SIZE_DEFAULT for DASDs. */
if (dev->type == PED_DEVICE_DASD) {
+ arch_specific->real_sector_size = dev->sector_size;
dev->sector_size = PED_SECTOR_SIZE_DEFAULT;
}
+#endif
if (dev->sector_size != PED_SECTOR_SIZE_DEFAULT) {
ped_exception_throw (
@@ -1081,6 +1084,7 @@ error:
return 0;
}
+#if defined __s390__ || defined __s390x__
static int
init_dasd (PedDevice* dev, const char* model_name)
{
@@ -1136,6 +1140,7 @@ error_close_dev:
error:
return 0;
}
+#endif
static int
init_generic (PedDevice* dev, const char* model_name)
@@ -1282,10 +1287,12 @@ linux_new (const char* path)
goto error_free_arch_specific;
break;
+#if defined __s390__ || defined __s390x__
case PED_DEVICE_DASD:
if (!init_dasd (dev, _("IBM S390 DASD drive")))
goto error_free_arch_specific;
break;
+#endif
case PED_DEVICE_VIODASD:
if (!init_generic (dev, _("IBM iSeries Virtual DASD")))
diff --git a/libparted/labels/dasd.c b/libparted/labels/dasd.c
index a7df859..37b1f1d 100644
--- a/libparted/labels/dasd.c
+++ b/libparted/labels/dasd.c
@@ -69,7 +69,6 @@ typedef struct {
} DasdPartitionData;
typedef struct {
- unsigned int real_sector_size;
unsigned int format_type;
} DasdDiskSpecific;
@@ -161,18 +160,6 @@ dasd_alloc (const PedDevice* dev)
return NULL;
}
- /* because we lie to parted we have to compensate with the
- real sector size. Record that now. */
- if (ioctl(arch_specific->fd, BLKSSZGET,
- &disk_specific->real_sector_size) == -1) {
- ped_exception_throw(PED_EXCEPTION_ERROR, PED_EXCEPTION_CANCEL,
- _("Unable to determine
the block "
- "size of this dasd"));
- free(disk_specific);
- free(disk);
- return NULL;
- }
-
return disk;
}
@@ -320,7 +307,7 @@ dasd_read (PedDisk* disk)
end = (long long)(long long) anchor.geo.cylinders
* (long long)anchor.geo.heads
* (long long)disk->dev->hw_geom.sectors
- * (long long)disk_specific->real_sector_size
+ * (long long)arch_specific->real_sector_size
/ (long long)disk->dev->sector_size - 1;
part = ped_partition_new (disk, PED_PARTITION_PROTECTED, NULL,
start, end);
if (!part)
@@ -359,11 +346,11 @@ dasd_read (PedDisk* disk)
start = (long long)(long long) p->start_trk
* (long long) disk->dev->hw_geom.sectors
- * (long long) disk_specific->real_sector_size
+ * (long long) arch_specific->real_sector_size
/ (long long) disk->dev->sector_size;
end = (long long)((long long) p->end_trk + 1)
* (long long) disk->dev->hw_geom.sectors
- * (long long) disk_specific->real_sector_size
+ * (long long) arch_specific->real_sector_size
/ (long long) disk->dev->sector_size - 1;
part = ped_partition_new(disk, PED_PARTITION_NORMAL, NULL,
start, end);
@@ -423,11 +410,11 @@ dasd_read (PedDisk* disk)
if (p->fspace_trk > 0) {
start = (long long)((long long) p->end_trk + 1)
* (long long) disk->dev->hw_geom.sectors
- * (long long)
disk_specific->real_sector_size
+ * (long long)
arch_specific->real_sector_size
/ (long long) disk->dev->sector_size;
end = (long long)((long long) p->end_trk + 1 +
p->fspace_trk)
* (long long) disk->dev->hw_geom.sectors
- * (long long)
disk_specific->real_sector_size
+ * (long long)
arch_specific->real_sector_size
/ (long long) disk->dev->sector_size -
1;
part = ped_partition_new (disk, PED_PARTITION_NORMAL,
NULL, start, end);
@@ -586,9 +573,9 @@ dasd_write (const PedDisk* disk)
PDEBUG;
start = part->geom.start * disk->dev->sector_size
- / disk_specific->real_sector_size /
disk->dev->hw_geom.sectors;
+ / arch_specific->real_sector_size /
disk->dev->hw_geom.sectors;
stop = (part->geom.end + 1)
- * disk->dev->sector_size /
disk_specific->real_sector_size
+ * disk->dev->sector_size /
arch_specific->real_sector_size
/ disk->dev->hw_geom.sectors - 1;
PDEBUG;
@@ -734,8 +721,9 @@ static PedAlignment*
dasd_get_partition_alignment(const PedDisk *disk)
{
DasdDiskSpecific* disk_specific = disk->disk_specific;
+ LinuxSpecific *arch_specific = LINUX_SPECIFIC(disk->dev);
PedSector sector_size =
- disk_specific->real_sector_size / disk->dev->sector_size;
+ arch_specific->real_sector_size / disk->dev->sector_size;
return ped_alignment_new(0, disk->dev->hw_geom.sectors * sector_size);
}
@@ -754,7 +742,7 @@ _primary_constraint (PedDisk* disk)
arch_specific = LINUX_SPECIFIC (disk->dev);
disk_specific = disk->disk_specific;
- sector_size = disk_specific->real_sector_size / disk->dev->sector_size;
+ sector_size = arch_specific->real_sector_size / disk->dev->sector_size;
if (!ped_alignment_init (&start_align, 0,
disk->dev->hw_geom.sectors * sector_size))
@@ -880,7 +868,7 @@ dasd_alloc_metadata (PedDisk* disk)
else
/* Mark the start of the disk as metadata. */
vtoc_end = (FIRST_USABLE_TRK * (long long)
disk->dev->hw_geom.sectors
- * (long long) disk_specific->real_sector_size
+ * (long long) arch_specific->real_sector_size
/ (long long) disk->dev->sector_size) - 1;
new_part = ped_partition_new
(disk,PED_PARTITION_METADATA,NULL,0,vtoc_end);
--
1.6.5.1