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qemu-img: Print available options with -o ?

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This patch adds a small help text to each of the options in the block drivers
which can be displayed by using qemu-img create -f fmt -o ?

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Kevin Wolf 2009-06-04 15:39:38 +02:00 • committed by Blue Swirl
parent f425c27872
commit db08adf526
10 changed files with 110 additions and 19 deletions
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18
qemu-img.c
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@ -281,15 +281,17 @@ static int img_create(int argc, char **argv)
break;
}
}
if (optind >= argc)
help();
filename = argv[optind++];
/* Find driver and parse its options */
drv = bdrv_find_format(fmt);
if (!drv)
error("Unknown file format '%s'", fmt);
if (options && !strcmp(options, "?")) {
print_option_help(drv->create_options);
return 0;
}
if (options) {
param = parse_option_parameters(options, drv->create_options, param);
if (param == NULL) {
@ -299,6 +301,11 @@ static int img_create(int argc, char **argv)
param = parse_option_parameters("", drv->create_options, param);
}
/* Get the filename */
if (optind >= argc)
help();
filename = argv[optind++];
/* Add size to parameters */
if (optind < argc) {
set_option_parameter(param, BLOCK_OPT_SIZE, argv[optind++]);
@ -596,6 +603,11 @@ static int img_convert(int argc, char **argv)
if (!drv)
error("Unknown file format '%s'", out_fmt);
if (options && !strcmp(options, "?")) {
print_option_help(drv->create_options);
return 0;
}
if (options) {
param = parse_option_parameters(options, drv->create_options, param);
if (param == NULL) {