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qemu-img.c: Clean up handling of image size in img_create()

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This cleans up the handling of image size in img_create() by parsing
the value early, and then only setting it once if a value has been
added as the last argument to the command line.

Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Jes Sorensen 2010-12-09 14:17:25 +01:00 committed by Kevin Wolf
parent d8427002dc
commit 1da7cfbd01
1 changed files with 17 additions and 6 deletions
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23
qemu-img.c
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@ -282,6 +282,7 @@ static int add_old_style_options(const char *fmt, QEMUOptionParameter *list,
static int img_create(int argc, char **argv)
{
int c, ret = 0;
uint64_t img_size = -1;
const char *fmt = "raw";
const char *base_fmt = NULL;
const char *filename;
@ -330,6 +331,20 @@ static int img_create(int argc, char **argv)
}
filename = argv[optind++];
/* Get image size, if specified */
if (optind < argc) {
ssize_t sval;
sval = strtosz_suffix(argv[optind++], NULL, STRTOSZ_DEFSUFFIX_B);
if (sval < 0) {
error("Invalid image size specified! You may use k, M, G or "
"T suffixes for ");
error("kilobytes, megabytes, gigabytes and terabytes.");
ret = -1;
goto out;
}
img_size = (uint64_t)sval;
}
if (options && !strcmp(options, "?")) {
ret = print_block_option_help(filename, fmt);
goto out;
@ -357,7 +372,8 @@ static int img_create(int argc, char **argv)
/* Create parameter list with default values */
param = parse_option_parameters("", create_options, param);
set_option_parameter_int(param, BLOCK_OPT_SIZE, -1);
set_option_parameter_int(param, BLOCK_OPT_SIZE, img_size);
/* Parse -o options */
if (options) {
@ -369,11 +385,6 @@ static int img_create(int argc, char **argv)
}
}
/* Add size to parameters */
if (optind < argc) {
set_option_parameter(param, BLOCK_OPT_SIZE, argv[optind++]);
}
/* Add old-style options to parameters */
ret = add_old_style_options(fmt, param, base_filename, base_fmt);
if (ret < 0) {