diff options
| -rw-r--r-- | qemu-io-cmds.c | 20 |
1 files changed, 13 insertions, 7 deletions
diff --git a/qemu-io-cmds.c b/qemu-io-cmds.c index 95bcde1d88..e415b03cd0 100644 --- a/qemu-io-cmds.c +++ b/qemu-io-cmds.c @@ -388,9 +388,15 @@ create_iovec(BlockBackend *blk, QEMUIOVector *qiov, char **argv, int nr_iov, goto fail; } - if (len > SIZE_MAX) { - printf("Argument '%s' exceeds maximum size %llu\n", arg, - (unsigned long long)SIZE_MAX); + if (len > BDRV_REQUEST_MAX_BYTES) { + printf("Argument '%s' exceeds maximum size %" PRIu64 "\n", arg, + (uint64_t)BDRV_REQUEST_MAX_BYTES); + goto fail; + } + + if (count > BDRV_REQUEST_MAX_BYTES - len) { + printf("The total number of bytes exceed the maximum size %" PRIu64 + "\n", (uint64_t)BDRV_REQUEST_MAX_BYTES); goto fail; } @@ -682,9 +688,9 @@ static int read_f(BlockBackend *blk, int argc, char **argv) if (count < 0) { print_cvtnum_err(count, argv[optind]); return 0; - } else if (count > SIZE_MAX) { + } else if (count > BDRV_REQUEST_MAX_BYTES) { printf("length cannot exceed %" PRIu64 ", given %s\n", - (uint64_t) SIZE_MAX, argv[optind]); + (uint64_t)BDRV_REQUEST_MAX_BYTES, argv[optind]); return 0; } @@ -1004,9 +1010,9 @@ static int write_f(BlockBackend *blk, int argc, char **argv) if (count < 0) { print_cvtnum_err(count, argv[optind]); return 0; - } else if (count > SIZE_MAX) { + } else if (count > BDRV_REQUEST_MAX_BYTES) { printf("length cannot exceed %" PRIu64 ", given %s\n", - (uint64_t) SIZE_MAX, argv[optind]); + (uint64_t)BDRV_REQUEST_MAX_BYTES, argv[optind]); return 0; } |