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Add bcachefs label and UUID reading (!123) 

Add reading of the bcachefs file system label, not the per device label,
and the external UUID.  These match what blkid reports.

Example without a label:
    # bcachefs format /dev/sdb1
    # bcachefs show-super /dev/sdb1 | egrep -i 'Label:|UUID:|Device:'
    External UUID:                              3316bc9a-d129-42b6-a80e-9649874bca73
    Internal UUID:                              656eebe5-10a9-4f12-94c8-aab2fdc54732
    Label:
    Device:                                     0
      Label:                                    (none)
      UUID:                                     cd436a8d-82eb-4993-a317-b39ea0d6bd2e
    # blkid /dev/sdb1
    /dev/sdb1: UUID="3316bc9a-d129-42b6-a80e-9649874bca73" BLOCK_SIZE="512" UUID_SUB="cd436a8d-82eb-4993-a317-b39ea0d6bd2e" TYPE="bcachefs" PARTUUID="7962e584-34c9-4088-8a00-a651af517089"

Example with a label:
    # bcachefs format --force -L 'test label' /dev/sdb1
    # bcachefs show-super /dev/sdb1 | egrep -i 'Label:|UUID:|Device:'
    External UUID:                              3d7bdabe-2616-4545-affc-1aba0f8fb4a7
    Internal UUID:                              9cc95d3e-7991-4f78-9dd0-850cb9749e34
    Label:                                      test label
    Device:                                     0
      Label:                                    (none)
      UUID:                                     784d1bd0-5769-4fbb-ad32-07894d381bba
    # blkid /dev/sdb1
    /dev/sdb1: UUID="3d7bdabe-2616-4545-affc-1aba0f8fb4a7" LABEL="test label" BLOCK_SIZE="512" UUID_SUB="784d1bd0-5769-4fbb-ad32-07894d381bba" TYPE="bcachefs" PARTUUID="7962e584-34c9-4088-8a00-a651af517089"

Closes !123 - Add support for bcachefs, single device file systems only
This commit is contained in:
Mike Fleetwood 2024-03-09 21:03:06 +00:00
parent 14aab8a26f
commit a7f9ce3fc7
2 changed files with 38 additions and 0 deletions
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2
include/bcachefs.h
View File

@ -34,6 +34,8 @@ public:
FS get_filesystem_support(); FS get_filesystem_support();
void set_used_sectors(Partition& partition); void set_used_sectors(Partition& partition);
bool create(const Partition& new_partition, OperationDetail& operationdetail); bool create(const Partition& new_partition, OperationDetail& operationdetail);
void read_label(Partition& partition);
void read_uuid(Partition& partition);
}; };

36
src/bcachefs.cc
View File

@ -43,6 +43,8 @@ FS bcachefs::get_filesystem_support()
fs.online_read = FS::EXTERNAL; fs.online_read = FS::EXTERNAL;
fs.create = FS::EXTERNAL; fs.create = FS::EXTERNAL;
fs.create_with_label = FS::EXTERNAL; fs.create_with_label = FS::EXTERNAL;
fs.read_label = FS::EXTERNAL;
fs.read_uuid = FS::EXTERNAL;
} }
fs_limits.min_size = 32 * MEBIBYTE; fs_limits.min_size = 32 * MEBIBYTE;
@ -95,4 +97,38 @@ bool bcachefs::create(const Partition& new_partition, OperationDetail& operation
} }
void bcachefs::read_label(Partition& partition)
{
exit_status = Utils::execute_command("bcachefs show-super " + 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:[[:blank:]]*(.*)$"));
}
void bcachefs::read_uuid(Partition& partition)
{
exit_status = Utils::execute_command("bcachefs show-super " + 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.uuid = Utils::regexp_label(output, "^External UUID: *(" RFC4122_NONE_NIL_UUID_REGEXP ")");
}
} //GParted } //GParted