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qemu
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qemu-img: Error out for excess arguments 

Don't silently ignore excess arguments at the end of the command line,
but error out instead. This can catch typos like 'resize test.img + 1G',
which doesn't increase the image size by 1G as intended, but truncates
the image to 1G. Even for less dangerous commands, the old behaviour is
confusing.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit is contained in:
Kevin Wolf 2013-08-05 10:53:04 +02:00
parent 79761c6681
commit fc11eb26ce
1 changed files with 10 additions and 7 deletions
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17
qemu-img.c
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@ -396,6 +396,9 @@ static int img_create(int argc, char **argv)
}
img_size = (uint64_t)sval;
}
if (optind != argc) {
help();
}
if (options && is_help_option(options)) {
return print_block_option_help(filename, fmt);
@ -573,7 +576,7 @@ static int img_check(int argc, char **argv)
break;
}
}
if (optind >= argc) {
if (optind != argc - 1) {
help();
}
filename = argv[optind++];
@ -684,7 +687,7 @@ static int img_commit(int argc, char **argv)
break;
}
}
if (optind >= argc) {
if (optind != argc - 1) {
help();
}
filename = argv[optind++];
@ -930,7 +933,7 @@ static int img_compare(int argc, char **argv)
}
if (optind > argc - 2) {
if (optind != argc - 2) {
help();
}
filename1 = argv[optind++];
@ -1741,7 +1744,7 @@ static int img_info(int argc, char **argv)
break;
}
}
if (optind >= argc) {
if (optind != argc - 1) {
help();
}
filename = argv[optind++];
@ -1842,7 +1845,7 @@ static int img_snapshot(int argc, char **argv)
}
}
if (optind >= argc) {
if (optind != argc - 1) {
help();
}
filename = argv[optind++];
@ -1953,7 +1956,7 @@ static int img_rebase(int argc, char **argv)
progress = 0;
}
if ((optind >= argc) || (!unsafe && !out_baseimg)) {
if ((optind != argc - 1) || (!unsafe && !out_baseimg)) {
help();
}
filename = argv[optind++];
@ -2232,7 +2235,7 @@ static int img_resize(int argc, char **argv)
break;
}
}
if (optind >= argc) {
if (optind != argc - 1) {
help();
}
filename = argv[optind++];