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btrfs-progs: image: add option --version, update help text

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For completeness and parity with other tools add the option --version
and mention --help.

Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
David Sterba 2025-01-23 01:52:09 +01:00
parent 50f725b707
commit ff360123c4
1 changed files with 11 additions and 0 deletions
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11
image/main.c
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@ -56,6 +56,10 @@ static const char * const image_usage[] = {
OPTLINE("-m", "restore for multiple devices"),
OPTLINE("-d", "also dump data, conflicts with -w"),
"",
"General:",
OPTLINE("--version", "print the btrfs-image version and exit"),
OPTLINE("--help", "print this help and exit"),
"",
"In the dump mode, source is the btrfs device and target is the output file (use '-' for stdout).",
"In the restore mode, source is the dumped image and target is the btrfs device/file.",
NULL
@ -86,8 +90,10 @@ int BOX_MAIN(image)(int argc, char *argv[])
hash_init_accel();
while (1) {
enum { GETOPT_VAL_VERSION = GETOPT_VAL_FIRST };
static const struct option long_options[] = {
{ "help", no_argument, NULL, GETOPT_VAL_HELP},
{ "version", no_argument, NULL, GETOPT_VAL_VERSION },
{ NULL, 0, NULL, 0 }
};
int c = getopt_long(argc, argv, "rc:t:oswmd", long_options, NULL);
@ -133,6 +139,10 @@ int BOX_MAIN(image)(int argc, char *argv[])
btrfs_warn_experimental("Feature: dump image with data");
dump_data = true;
break;
case GETOPT_VAL_VERSION:
printf("btrfs-image, part of %s\n", PACKAGE_STRING);
ret = 0;
goto success;
case GETOPT_VAL_HELP:
default:
usage(&image_cmd, c != GETOPT_VAL_HELP);
@ -293,5 +303,6 @@ out:
btrfs_close_all_devices();
success:
return !!ret;
}