diff options
Diffstat (limited to 'tools/blktap/drivers/block-qcow.c')
| -rw-r--r-- | tools/blktap/drivers/block-qcow.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/tools/blktap/drivers/block-qcow.c b/tools/blktap/drivers/block-qcow.c index 5eaf141758..a1fab17c55 100644 --- a/tools/blktap/drivers/block-qcow.c +++ b/tools/blktap/drivers/block-qcow.c @@ -745,7 +745,10 @@ found: } memcpy(tmp_ptr2, l2_ptr, 4096); lseek(s->fd, l2_offset + (l2_sector << 12), SEEK_SET); - write(s->fd, tmp_ptr2, 4096); + if (write(s->fd, tmp_ptr2, 4096) != 4096) { + free(tmp_ptr2); + return -1; + } free(tmp_ptr2); } return cluster_offset; @@ -1252,8 +1255,8 @@ int qcow_create(const char *filename, uint64_t total_size, strncpy(backing_filename, backing_file, sizeof(backing_filename)); } else { - realpath(backing_file, backing_filename); - if (stat(backing_filename, &st) != 0) { + if (realpath(backing_file, backing_filename) == NULL || + stat(backing_filename, &st) != 0) { return -1; } } |