[gparted] Add exFAT support (!30)

[Curtis Gedak <gedakc src gnome org>]

commit bd386f445db0df88025a70063affc0473a1e701c
Author: Mike Fleetwood <mike fleetwood googlemail com>
Date:   Mon Jan 11 17:26:41 2021 +0000

    Add exFAT support (!30)
    
    With exfatprogs (https://github.com/exfatprogs/exfatprogs) installed the
    following operations on exFAT file systems are supported:
    - Creation
    - Checking
    - Labelling
    As of the current exfatprogs 1.0.4 the following are not supported:
    - Reading usage
    - Resizing
    - Updating the UUID
    
    Closes !30 - Add exFAT support

 README                 |  1 +
 gparted.appdata.xml.in |  6 ++---
 include/exfat.h        | 13 ++++++++--
 src/Utils.cc           |  3 ++-
 src/exfat.cc           | 65 ++++++++++++++++++++++++++++++++++++++++++++++++--
 5 files changed, 80 insertions(+), 8 deletions(-)
---
diff --git a/README b/README
index b0d900d9..13de9287 100644
--- a/README
+++ b/README
@@ -261,6 +261,7 @@ provide this support:
 
    btrfs-progs / btrfs-tools
    e2fsprogs
+   exfatprogs
    f2fs-tools
    dosfstools
    mtools          - required to read and write FAT16/32 volume labels
diff --git a/gparted.appdata.xml.in b/gparted.appdata.xml.in
index 777a4231..843a901b 100644
--- a/gparted.appdata.xml.in
+++ b/gparted.appdata.xml.in
@@ -18,9 +18,9 @@
     data rescue from lost partitions.
     </_p>
     <_p>
-    GParted works with many file systems including: btrfs, ext2, ext3,
-    ext4, fat16, fat32, hfs, hfs+, linux-swap, lvm2 pv, minix, nilfs2,
-    ntfs, reiserfs, reiser4, udf, ufs, and xfs.
+    GParted works with many file systems including: btrfs, exfat, ext2,
+    ext3, ext4, fat16, fat32, hfs, hfs+, linux-swap, lvm2 pv, minix,
+    nilfs2, ntfs, reiserfs, reiser4, udf, ufs, and xfs.
     </_p>
   </description>
   <launchable type="desktop-id">gparted.desktop</launchable>
diff --git a/include/exfat.h b/include/exfat.h
index 40132993..aa6f1d62 100644
--- a/include/exfat.h
+++ b/include/exfat.h
@@ -14,21 +14,30 @@
  *  along with this program; if not, see <http://www.gnu.org/licenses/>.
  */
 
-
 #ifndef GPARTED_EXFAT_H
 #define GPARTED_EXFAT_H
 
+
 #include "FileSystem.h"
+#include "OperationDetail.h"
+#include "Partition.h"
+
 
 namespace GParted
 {
 
+
 class exfat : public FileSystem
 {
 public:
-       FS get_filesystem_support() ;
+       FS get_filesystem_support();
+       bool create(const Partition& new_partition, OperationDetail& operationdetail);
+       void read_label(Partition& partition);
+       bool write_label(const Partition& partition, OperationDetail& operationdetail);
+       bool check_repair(const Partition& partition, OperationDetail& operationdetail);
 };
 
+
 } //GParted
 
 #endif /* GPARTED_EXFAT_H */
diff --git a/src/Utils.cc b/src/Utils.cc
index 0e4fa389..8c454378 100644
--- a/src/Utils.cc
+++ b/src/Utils.cc
@@ -261,7 +261,7 @@ int Utils::get_filesystem_label_maxlength(FSType fstype)
                //All file systems commented out are not supported for labelling
                //  by either the new partition or label partition operations.
                case FS_BTRFS           : return 255 ;
-               //case FS_EXFAT         : return  ;
+               case FS_EXFAT           : return 11;
                case FS_EXT2            : return 16 ;
                case FS_EXT3            : return 16 ;
                case FS_EXT4            : return 16 ;
@@ -433,6 +433,7 @@ Glib::ustring Utils::get_filesystem_software(FSType fstype)
        switch (fstype)
        {
                case FS_BTRFS       : return "btrfs-progs / btrfs-tools" ;
+               case FS_EXFAT       : return "exfatprogs";
                case FS_EXT2        : return "e2fsprogs" ;
                case FS_EXT3        : return "e2fsprogs" ;
                case FS_EXT4        : return "e2fsprogs v1.41+" ;
diff --git a/src/exfat.cc b/src/exfat.cc
index e17bbabc..41d0e726 100644
--- a/src/exfat.cc
+++ b/src/exfat.cc
@@ -16,10 +16,18 @@
 
 #include "exfat.h"
 #include "FileSystem.h"
+#include "OperationDetail.h"
+#include "Partition.h"
+#include "Utils.h"
+
+#include <glibmm/miscutils.h>
+#include <glibmm/shell.h>
+
 
 namespace GParted
 {
 
+
 FS exfat::get_filesystem_support()
 {
        FS fs( FS_EXFAT );
@@ -28,8 +36,61 @@ FS exfat::get_filesystem_support()
        fs .copy = FS::GPARTED ;
        fs .move = FS::GPARTED ;
        fs .online_read = FS::GPARTED ;
-       
-       return fs ;
+
+       if (! Glib::find_program_in_path("mkfs.exfat").empty())
+               fs.create = FS::EXTERNAL;
+
+       if (! Glib::find_program_in_path("tune.exfat").empty())
+       {
+               fs.read_label = FS::EXTERNAL;
+               fs.write_label = FS::EXTERNAL;
+       }
+
+       if (! Glib::find_program_in_path("fsck.exfat").empty())
+               fs.check = FS::EXTERNAL;
+
+       return fs;
 }
 
+
+bool exfat::create(const Partition& new_partition, OperationDetail& operationdetail)
+{
+       return ! execute_command("mkfs.exfat -L " + Glib::shell_quote(new_partition.get_filesystem_label()) +
+                                " " + Glib::shell_quote(new_partition.get_path()),
+                                operationdetail, EXEC_CHECK_STATUS|EXEC_CANCEL_SAFE);
+}
+
+
+void exfat::read_label(Partition& partition)
+{
+       exit_status = Utils::execute_command("tune.exfat -l " + Glib::shell_quote(partition.get_path()),
+                                            output, error, true);
+       if (exit_status != 0)
+       {
+               if (! output.empty())
+                       partition.push_back_message(output);
+               if (! error.empty())
+                       partition.push_back_message(error);
+               return;
+       }
+
+       partition.set_filesystem_label(Utils::regexp_label(output, "^label: ([^\n]*)"));
+}
+
+
+bool exfat::write_label(const Partition& partition, OperationDetail& operationdetail)
+{
+       return ! execute_command("tune.exfat -L " + Glib::shell_quote(partition.get_filesystem_label()) +
+                                " " + Glib::shell_quote(partition.get_path()),
+                                operationdetail, EXEC_CHECK_STATUS|EXEC_CANCEL_SAFE);
+}
+
+
+bool exfat::check_repair(const Partition& partition, OperationDetail& operationdetail)
+{
+       return ! execute_command("fsck.exfat -v " + Glib::shell_quote(partition.get_path()),
+                                operationdetail, EXEC_CHECK_STATUS|EXEC_CANCEL_SAFE);
+}
+
+
 } //GParted