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Add bcachefs label and UUID reading (!123)

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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 aabba99594
commit b8304a141a
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();
void set_used_sectors(Partition& partition);
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.create = FS::EXTERNAL;
fs.create_with_label = FS::EXTERNAL;
fs.read_label = FS::EXTERNAL;
fs.read_uuid = FS::EXTERNAL;
}
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