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qemu-io: Fix multiwrite_f error handling

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Without this fix, some qiovs can be leaked if an error occurs. Also a semicolon
at the end of the command line would make the code walk beyond the end of argv.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Kevin Wolf 2011-10-31 11:49:21 +01:00
parent f2360620fb
commit 67403dbba7
1 changed files with 6 additions and 3 deletions
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9
qemu-io.c
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@ -960,21 +960,21 @@ static int multiwrite_f(int argc, char **argv)
buf = g_malloc0(nr_reqs * sizeof(*buf)); buf = g_malloc0(nr_reqs * sizeof(*buf));
qiovs = g_malloc(nr_reqs * sizeof(*qiovs)); qiovs = g_malloc(nr_reqs * sizeof(*qiovs));
for (i = 0; i < nr_reqs; i++) { for (i = 0; i < nr_reqs && optind < argc; i++) {
int j; int j;
/* Read the offset of the request */ /* Read the offset of the request */
offset = cvtnum(argv[optind]); offset = cvtnum(argv[optind]);
if (offset < 0) { if (offset < 0) {
printf("non-numeric offset argument -- %s\n", argv[optind]); printf("non-numeric offset argument -- %s\n", argv[optind]);
return 0; goto out;
} }
optind++; optind++;
if (offset & 0x1ff) { if (offset & 0x1ff) {
printf("offset %lld is not sector aligned\n", printf("offset %lld is not sector aligned\n",
(long long)offset); (long long)offset);
return 0; goto out;
} }
if (i == 0) { if (i == 0) {
@ -1005,6 +1005,9 @@ static int multiwrite_f(int argc, char **argv)
pattern++; pattern++;
} }
/* If there were empty requests at the end, ignore them */
nr_reqs = i;
gettimeofday(&t1, NULL); gettimeofday(&t1, NULL);
cnt = do_aio_multiwrite(reqs, nr_reqs, &total); cnt = do_aio_multiwrite(reqs, nr_reqs, &total);
gettimeofday(&t2, NULL); gettimeofday(&t2, NULL);