From 109a5a35d8482f43c7d779df3b7d10bf16d5f31b Mon Sep 17 00:00:00 2001

From: Petr Uzel <petr.uzel@suse.cz>

Date: Mon, 26 Sep 2011 17:21:01 +0200

Subject: [PATCH 48/48] parted: add resizepart command

Add resizepart command to resize ( change the end position ) an existing

partition.  Note that it does nothing to a filesystem in the partition.

(cherry picked from commit 21c58e17c473ea8ef31a18d03348eb2381c0f36c)

Resolves: rhbz#1423357

---

 NEWS            |  1 +

 parted/parted.c | 77 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++-

 2 files changed, 77 insertions(+), 1 deletion(-)

diff --git a/NEWS b/NEWS

index d1a6f58..62d6381 100644

--- a/NEWS

+++ b/NEWS

@@ -3,6 +3,7 @@ GNU parted NEWS                                    -*- outline -*-

 * Noteworthy changes in release 3.1-29 (2017-04-11) [RHEL7.4]

   Parted now recognizes NVMe devices

+  Add resizepart command to resize a partition

 * Noteworthy changes in release 3.1-18 (2014-08-12) [RHEL7.1]

diff --git a/parted/parted.c b/parted/parted.c

index d4a397b..d64b0b8 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)

 {

@@ -1478,7 +1496,7 @@ error:

 }

 static int

-do_resize (PedDevice **dev, PedDisk** diskp)

+do_resize (PedDevice **dev)

 {

         ped_exception_throw (

                 PED_EXCEPTION_ERROR,

@@ -1488,6 +1506,63 @@ do_resize (PedDevice **dev, PedDisk** diskp)

 }

 static int

+do_resizepart (PedDevice** dev)

+{

+        PedDisk                 *disk;

+        PedPartition            *part = NULL;

+        PedSector               start, end, oldend;

+        PedGeometry             *range_end = NULL;

+        PedConstraint*          constraint;

+        int rc = 0;

+

+        disk = ped_disk_new (*dev);

+        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);

+

+        if ((*dev)->type != PED_DEVICE_FILE)

+                disk_is_modified = 1;

+

+        rc = 1;

+

+error_destroy_constraint:

+        ped_constraint_destroy (constraint);

+error:

+        if (range_end != NULL)

+                ped_geometry_destroy (range_end);

+        return rc;

+}

+

+

+static int

 do_rm (PedDevice** dev)

 {

         PedDisk*                disk;

-- 

2.9.4