[parted-devel] [PATCH 1/6] parted: resizepart command
Phillip Susi
psusi at ubuntu.com
Fri Jan 18 04:56:34 UTC 2013
From: Petr Uzel <petr.uzel at suse.cz>
TODO
---
parted/parted.c | 89 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 89 insertions(+)
diff --git a/parted/parted.c b/parted/parted.c
index 29e6773..28c874b 100644
--- a/parted/parted.c
+++ b/parted/parted.c
@@ -152,6 +152,9 @@ static const char* fs_type_msg_start = N_("FS-TYPE is one of: ");
static const char* start_end_msg = N_("START and END are disk locations, such as "
"4GB or 10%. Negative values count from the end of the disk. "
"For example, -1s specifies exactly the last sector.\n");
+static const char* end_msg = N_("END is disk location, such as "
+ "4GB or 10%. Negative value counts from the end of the disk. "
+ "For example, -1s specifies exactly the last sector.\n");
static const char* state_msg = N_("STATE is one of: on, off\n");
static const char* device_msg = N_("DEVICE is usually /dev/hda or /dev/sda\n");
static const char* name_msg = N_("NAME is any word you want\n");
@@ -435,6 +438,21 @@ constraint_from_start_end (PedDevice* dev, PedGeometry* range_start,
range_start, range_end, 1, dev->length);
}
+
+static PedConstraint*
+constraint_from_start_end_fixed_start (PedDevice* dev, PedSector start_sector,
+ PedGeometry* range_end)
+{
+ PedGeometry range_start;
+ range_start.dev = dev;
+ range_start.start = start_sector;
+ range_start.end = start_sector;
+ range_start.length = 1;
+
+ return ped_constraint_new (ped_alignment_any, ped_alignment_any,
+ &range_start, range_end, 1, dev->length);
+}
+
void
help_on (char* topic)
{
@@ -1482,6 +1500,68 @@ error:
}
static int
+do_resizepart (PedDevice** dev, PedDisk** diskp)
+{
+ PedDisk *disk = *diskp;
+ PedPartition *part = NULL;
+ PedSector start, end, oldend;
+ PedGeometry *range_end = NULL;
+ PedConstraint* constraint;
+
+ if (!disk) {
+ disk = ped_disk_new (*dev);
+ *diskp = disk;
+ }
+ if (!disk)
+ goto error;
+
+ if (ped_disk_is_flag_available(disk, PED_DISK_CYLINDER_ALIGNMENT))
+ if (!ped_disk_set_flag(disk, PED_DISK_CYLINDER_ALIGNMENT,
+ alignment == ALIGNMENT_CYLINDER))
+ goto error;
+
+ if (!command_line_get_partition (_("Partition number?"), disk, &part))
+ goto error;
+ if (!_partition_warn_busy (part))
+ goto error;
+
+ start = part->geom.start;
+ end = oldend = part->geom.end;
+ if (!command_line_get_sector (_("End?"), *dev, &end, &range_end, NULL))
+ goto error;
+ /* Do not move start of the partition */
+ constraint = constraint_from_start_end_fixed_start (*dev, start, range_end);
+ if (!ped_disk_set_partition_geom (disk, part, constraint,
+ start, end))
+ goto error_destroy_constraint;
+ /* warn when shrinking partition - might lose data */
+ if (part->geom.end < oldend)
+ if (ped_exception_throw (
+ PED_EXCEPTION_WARNING,
+ PED_EXCEPTION_YES_NO,
+ _("Shrinking a partition can cause data loss, " \
+ "are you sure you want to continue?")) != PED_EXCEPTION_YES)
+ goto error_destroy_constraint;
+ ped_disk_commit (disk);
+ ped_constraint_destroy (constraint);
+ if (range_end != NULL)
+ ped_geometry_destroy (range_end);
+
+ if ((*dev)->type != PED_DEVICE_FILE)
+ disk_is_modified = 1;
+
+ return 1;
+
+error_destroy_constraint:
+ ped_constraint_destroy (constraint);
+error:
+ if (range_end != NULL)
+ ped_geometry_destroy (range_end);
+ return 0;
+}
+
+
+static int
do_rm (PedDevice** dev, PedDisk** disk)
{
PedPartition* part = NULL;
@@ -1886,6 +1966,15 @@ _("rescue START END rescue a lost partition near "
NULL),
str_list_create (_(start_end_msg), NULL), 1));
+//XXX: mention that this command does never move start of the partition
+command_register (commands, command_create (
+ str_list_create_unique ("resizepart", _("resizepart"), NULL),
+ do_resizepart,
+ str_list_create (
+_("resizepart NUMBER END resize partition NUMBER"),
+NULL),
+ str_list_create (_(number_msg), _(end_msg), NULL), 1));
+
command_register (commands, command_create (
str_list_create_unique ("rm", _("rm"), NULL),
do_rm,
--
1.7.10.4
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