X-Git-Url: https://repo.jachan.dev/qemu.git/blobdiff_plain/b13197b1a8b7ca201f114c4da704d3ed671228ab..c5460d5e19b4c531e86f8be0e00ab463fae7548b:/qemu-img.c diff --git a/qemu-img.c b/qemu-img.c index 95a24b9762..a2369766f0 100644 --- a/qemu-img.c +++ b/qemu-img.c @@ -70,6 +70,7 @@ enum { OPTION_PREALLOCATION = 265, OPTION_SHRINK = 266, OPTION_SALVAGE = 267, + OPTION_TARGET_IS_ZERO = 268, }; typedef enum OutputFormat { @@ -222,6 +223,53 @@ static bool qemu_img_object_print_help(const char *type, QemuOpts *opts) return true; } +/* + * Is @optarg safe for accumulate_options()? + * It is when multiple of them can be joined together separated by ','. + * To make that work, @optarg must not start with ',' (or else a + * separating ',' preceding it gets escaped), and it must not end with + * an odd number of ',' (or else a separating ',' following it gets + * escaped), or be empty (or else a separating ',' preceding it can + * escape a separating ',' following it). + * + */ +static bool is_valid_option_list(const char *optarg) +{ + size_t len = strlen(optarg); + size_t i; + + if (!optarg[0] || optarg[0] == ',') { + return false; + } + + for (i = len; i > 0 && optarg[i - 1] == ','; i--) { + } + if ((len - i) % 2) { + return false; + } + + return true; +} + +static int accumulate_options(char **options, char *optarg) +{ + char *new_options; + + if (!is_valid_option_list(optarg)) { + error_report("Invalid option list: %s", optarg); + return -1; + } + + if (!*options) { + *options = g_strdup(optarg); + } else { + new_options = g_strdup_printf("%s,%s", *options, optarg); + g_free(*options); + *options = new_options; + } + return 0; +} + static QemuOptsList qemu_source_opts = { .name = "source", .implied_opt_name = "file", @@ -481,17 +529,9 @@ static int img_create(int argc, char **argv) fmt = optarg; break; case 'o': - if (!is_valid_option_list(optarg)) { - error_report("Invalid option list: %s", optarg); + if (accumulate_options(&options, optarg) < 0) { goto fail; } - if (!options) { - options = g_strdup(optarg); - } else { - char *old_options = options; - options = g_strdup_printf("%s,%s", options, optarg); - g_free(old_options); - } break; case 'q': quiet = true; @@ -646,9 +686,9 @@ static int collect_image_check(BlockDriverState *bs, check->leaks = result.leaks; check->has_leaks = result.leaks != 0; check->corruptions_fixed = result.corruptions_fixed; - check->has_corruptions_fixed = result.corruptions != 0; + check->has_corruptions_fixed = result.corruptions_fixed != 0; check->leaks_fixed = result.leaks_fixed; - check->has_leaks_fixed = result.leaks != 0; + check->has_leaks_fixed = result.leaks_fixed != 0; check->image_end_offset = result.image_end_offset; check->has_image_end_offset = result.image_end_offset != 0; check->total_clusters = result.bfi.total_clusters; @@ -802,9 +842,12 @@ static int img_check(int argc, char **argv) if (check->corruptions_fixed || check->leaks_fixed) { int corruptions_fixed, leaks_fixed; + bool has_leaks_fixed, has_corruptions_fixed; leaks_fixed = check->leaks_fixed; + has_leaks_fixed = check->has_leaks_fixed; corruptions_fixed = check->corruptions_fixed; + has_corruptions_fixed = check->has_corruptions_fixed; if (output_format == OFORMAT_HUMAN) { qprintf(quiet, @@ -816,10 +859,14 @@ static int img_check(int argc, char **argv) check->corruptions_fixed); } + qapi_free_ImageCheck(check); + check = g_new0(ImageCheck, 1); ret = collect_image_check(bs, check, filename, fmt, 0); check->leaks_fixed = leaks_fixed; + check->has_leaks_fixed = has_leaks_fixed; check->corruptions_fixed = corruptions_fixed; + check->has_corruptions_fixed = has_corruptions_fixed; } if (!ret) { @@ -881,9 +928,9 @@ static void run_block_job(BlockJob *job, Error **errp) do { float progress = 0.0f; aio_poll(aio_context, true); - if (job->job.progress_total) { - progress = (float)job->job.progress_current / - job->job.progress_total * 100.f; + if (job->job.progress.total) { + progress = (float)job->job.progress.current / + job->job.progress.total * 100.f; } qemu_progress_print(progress, 0); } while (!job_is_ready(&job->job) && !job_is_completed(&job->job)); @@ -1916,8 +1963,8 @@ retry: if (status == BLK_DATA && !copy_range) { ret = convert_co_read(s, sector_num, n, buf); if (ret < 0) { - error_report("error while reading sector %" PRId64 - ": %s", sector_num, strerror(-ret)); + error_report("error while reading at byte %lld: %s", + sector_num * BDRV_SECTOR_SIZE, strerror(-ret)); s->ret = ret; } } else if (!s->min_sparse && status == BLK_ZERO) { @@ -1945,8 +1992,8 @@ retry: ret = convert_co_write(s, sector_num, n, buf, status); } if (ret < 0) { - error_report("error while writing sector %" PRId64 - ": %s", sector_num, strerror(-ret)); + error_report("error while writing at byte %lld: %s", + sector_num * BDRV_SECTOR_SIZE, strerror(-ret)); s->ret = ret; } } @@ -1984,10 +2031,9 @@ static int convert_do_copy(ImgConvertState *s) int64_t sector_num = 0; /* Check whether we have zero initialisation or can get it efficiently */ - if (s->target_is_new && s->min_sparse && !s->target_has_backing) { + if (!s->has_zero_init && s->target_is_new && s->min_sparse && + !s->target_has_backing) { s->has_zero_init = bdrv_has_zero_init(blk_bs(s->target)); - } else { - s->has_zero_init = false; } if (!s->has_zero_init && !s->target_has_backing && @@ -2086,6 +2132,7 @@ static int img_convert(int argc, char **argv) {"force-share", no_argument, 0, 'U'}, {"target-image-opts", no_argument, 0, OPTION_TARGET_IMAGE_OPTS}, {"salvage", no_argument, 0, OPTION_SALVAGE}, + {"target-is-zero", no_argument, 0, OPTION_TARGET_IS_ZERO}, {0, 0, 0, 0} }; c = getopt_long(argc, argv, ":hf:O:B:Cco:l:S:pt:T:qnm:WU", @@ -2119,17 +2166,9 @@ static int img_convert(int argc, char **argv) s.compressed = true; break; case 'o': - if (!is_valid_option_list(optarg)) { - error_report("Invalid option list: %s", optarg); + if (accumulate_options(&options, optarg) < 0) { goto fail_getopt; } - if (!options) { - options = g_strdup(optarg); - } else { - char *old_options = options; - options = g_strdup_printf("%s,%s", options, optarg); - g_free(old_options); - } break; case 'l': if (strstart(optarg, SNAPSHOT_OPT_BASE, NULL)) { @@ -2209,6 +2248,14 @@ static int img_convert(int argc, char **argv) case OPTION_TARGET_IMAGE_OPTS: tgt_image_opts = true; break; + case OPTION_TARGET_IS_ZERO: + /* + * The user asserting that the target is blank has the + * same effect as the target driver supporting zero + * initialisation. + */ + s.has_zero_init = true; + break; } } @@ -2247,6 +2294,11 @@ static int img_convert(int argc, char **argv) warn_report("This will become an error in future QEMU versions."); } + if (s.has_zero_init && !skip_create) { + error_report("--target-is-zero requires use of -n flag"); + goto fail_getopt; + } + s.src_num = argc - optind - 1; out_filename = s.src_num >= 1 ? argv[argc - 1] : NULL; @@ -2380,6 +2432,12 @@ static int img_convert(int argc, char **argv) } s.target_has_backing = (bool) out_baseimg; + if (s.has_zero_init && s.target_has_backing) { + error_report("Cannot use --target-is-zero when the destination " + "image has a backing file"); + goto out; + } + if (s.src_num > 1 && out_baseimg) { error_report("Having a backing file for the target makes no sense when " "concatenating multiple input images"); @@ -2503,7 +2561,7 @@ static int img_convert(int argc, char **argv) } } - if (s.target_has_backing) { + if (s.target_has_backing && s.target_is_new) { /* Errors are treated as "backing length unknown" (which means * s.target_backing_sectors has to be negative, which it will * be automatically). The backing file length is used only @@ -2680,7 +2738,10 @@ static ImageInfoList *collect_image_info_list(bool image_opts, blk_unref(blk); + /* Clear parameters that only apply to the topmost image */ filename = fmt = NULL; + image_opts = false; + if (chain) { if (info->has_full_backing_filename) { filename = info->full_backing_filename; @@ -3923,18 +3984,10 @@ static int img_amend(int argc, char **argv) help(); break; case 'o': - if (!is_valid_option_list(optarg)) { - error_report("Invalid option list: %s", optarg); + if (accumulate_options(&options, optarg) < 0) { ret = -1; goto out_no_progress; } - if (!options) { - options = g_strdup(optarg); - } else { - char *old_options = options; - options = g_strdup_printf("%s,%s", options, optarg); - g_free(old_options); - } break; case 'f': fmt = optarg; @@ -4184,7 +4237,8 @@ static int img_bench(int argc, char **argv) {"force-share", no_argument, 0, 'U'}, {0, 0, 0, 0} }; - c = getopt_long(argc, argv, ":hc:d:f:no:qs:S:t:wU", long_options, NULL); + c = getopt_long(argc, argv, ":hc:d:f:ni:o:qs:S:t:wU", long_options, + NULL); if (c == -1) { break; } @@ -4227,6 +4281,14 @@ static int img_bench(int argc, char **argv) case 'n': flags |= BDRV_O_NATIVE_AIO; break; + case 'i': + ret = bdrv_parse_aio(optarg, &flags); + if (ret < 0) { + error_report("Invalid aio option: %s", optarg); + ret = -1; + goto out; + } + break; case 'o': { offset = cvtnum(optarg); @@ -4816,17 +4878,9 @@ static int img_measure(int argc, char **argv) out_fmt = optarg; break; case 'o': - if (!is_valid_option_list(optarg)) { - error_report("Invalid option list: %s", optarg); + if (accumulate_options(&options, optarg) < 0) { goto out; } - if (!options) { - options = g_strdup(optarg); - } else { - char *old_options = options; - options = g_strdup_printf("%s,%s", options, optarg); - g_free(old_options); - } break; case 'l': if (strstart(optarg, SNAPSHOT_OPT_BASE, NULL)) { @@ -4900,10 +4954,8 @@ static int img_measure(int argc, char **argv) filename = argv[optind]; } - if (!filename && - (object_opts || image_opts || fmt || snapshot_name || sn_opts)) { - error_report("--object, --image-opts, -f, and -l " - "require a filename argument."); + if (!filename && (image_opts || fmt || snapshot_name || sn_opts)) { + error_report("--image-opts, -f, and -l require a filename argument."); goto out; } if (filename && img_size != UINT64_MAX) {