From bb756eebdac6fd24e8919e2c43f7d2c8c4091f59 Mon Sep 17 00:00:00 2001 From: RajithaY Date: Tue, 25 Apr 2017 03:31:15 -0700 Subject: Adding qemu as a submodule of KVMFORNFV This Patch includes the changes to add qemu as a submodule to kvmfornfv repo and make use of the updated latest qemu for the execution of all testcase Change-Id: I1280af507a857675c7f81d30c95255635667bdd7 Signed-off-by:RajithaY --- qemu/qemu-img.c | 3507 ------------------------------------------------------- 1 file changed, 3507 deletions(-) delete mode 100644 qemu/qemu-img.c (limited to 'qemu/qemu-img.c') diff --git a/qemu/qemu-img.c b/qemu/qemu-img.c deleted file mode 100644 index 46f2a6def..000000000 --- a/qemu/qemu-img.c +++ /dev/null @@ -1,3507 +0,0 @@ -/* - * QEMU disk image utility - * - * Copyright (c) 2003-2008 Fabrice Bellard - * - * Permission is hereby granted, free of charge, to any person obtaining a copy - * of this software and associated documentation files (the "Software"), to deal - * in the Software without restriction, including without limitation the rights - * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell - * copies of the Software, and to permit persons to whom the Software is - * furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included in - * all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL - * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, - * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN - * THE SOFTWARE. - */ -#include "qemu/osdep.h" -#include "qapi/error.h" -#include "qapi-visit.h" -#include "qapi/qmp-output-visitor.h" -#include "qapi/qmp/qerror.h" -#include "qapi/qmp/qjson.h" -#include "qemu/cutils.h" -#include "qemu/config-file.h" -#include "qemu/option.h" -#include "qemu/error-report.h" -#include "qom/object_interfaces.h" -#include "sysemu/sysemu.h" -#include "sysemu/block-backend.h" -#include "block/block_int.h" -#include "block/blockjob.h" -#include "block/qapi.h" -#include "crypto/init.h" -#include - -#define QEMU_IMG_VERSION "qemu-img version " QEMU_VERSION QEMU_PKGVERSION \ - ", Copyright (c) 2004-2008 Fabrice Bellard\n" - -typedef struct img_cmd_t { - const char *name; - int (*handler)(int argc, char **argv); -} img_cmd_t; - -enum { - OPTION_OUTPUT = 256, - OPTION_BACKING_CHAIN = 257, - OPTION_OBJECT = 258, - OPTION_IMAGE_OPTS = 259, -}; - -typedef enum OutputFormat { - OFORMAT_JSON, - OFORMAT_HUMAN, -} OutputFormat; - -/* Default to cache=writeback as data integrity is not important for qemu-img */ -#define BDRV_DEFAULT_CACHE "writeback" - -static void format_print(void *opaque, const char *name) -{ - printf(" %s", name); -} - -static void QEMU_NORETURN GCC_FMT_ATTR(1, 2) error_exit(const char *fmt, ...) -{ - va_list ap; - - error_printf("qemu-img: "); - - va_start(ap, fmt); - error_vprintf(fmt, ap); - va_end(ap); - - error_printf("\nTry 'qemu-img --help' for more information\n"); - exit(EXIT_FAILURE); -} - -/* Please keep in synch with qemu-img.texi */ -static void QEMU_NORETURN help(void) -{ - const char *help_msg = - QEMU_IMG_VERSION - "usage: qemu-img command [command options]\n" - "QEMU disk image utility\n" - "\n" - "Command syntax:\n" -#define DEF(option, callback, arg_string) \ - " " arg_string "\n" -#include "qemu-img-cmds.h" -#undef DEF -#undef GEN_DOCS - "\n" - "Command parameters:\n" - " 'filename' is a disk image filename\n" - " 'objectdef' is a QEMU user creatable object definition. See the qemu(1)\n" - " manual page for a description of the object properties. The most common\n" - " object type is a 'secret', which is used to supply passwords and/or\n" - " encryption keys.\n" - " 'fmt' is the disk image format. It is guessed automatically in most cases\n" - " 'cache' is the cache mode used to write the output disk image, the valid\n" - " options are: 'none', 'writeback' (default, except for convert), 'writethrough',\n" - " 'directsync' and 'unsafe' (default for convert)\n" - " 'src_cache' is the cache mode used to read input disk images, the valid\n" - " options are the same as for the 'cache' option\n" - " 'size' is the disk image size in bytes. Optional suffixes\n" - " 'k' or 'K' (kilobyte, 1024), 'M' (megabyte, 1024k), 'G' (gigabyte, 1024M),\n" - " 'T' (terabyte, 1024G), 'P' (petabyte, 1024T) and 'E' (exabyte, 1024P) are\n" - " supported. 'b' is ignored.\n" - " 'output_filename' is the destination disk image filename\n" - " 'output_fmt' is the destination format\n" - " 'options' is a comma separated list of format specific options in a\n" - " name=value format. Use -o ? for an overview of the options supported by the\n" - " used format\n" - " 'snapshot_param' is param used for internal snapshot, format\n" - " is 'snapshot.id=[ID],snapshot.name=[NAME]', or\n" - " '[ID_OR_NAME]'\n" - " 'snapshot_id_or_name' is deprecated, use 'snapshot_param'\n" - " instead\n" - " '-c' indicates that target image must be compressed (qcow format only)\n" - " '-u' enables unsafe rebasing. It is assumed that old and new backing file\n" - " match exactly. The image doesn't need a working backing file before\n" - " rebasing in this case (useful for renaming the backing file)\n" - " '-h' with or without a command shows this help and lists the supported formats\n" - " '-p' show progress of command (only certain commands)\n" - " '-q' use Quiet mode - do not print any output (except errors)\n" - " '-S' indicates the consecutive number of bytes (defaults to 4k) that must\n" - " contain only zeros for qemu-img to create a sparse image during\n" - " conversion. If the number of bytes is 0, the source will not be scanned for\n" - " unallocated or zero sectors, and the destination image will always be\n" - " fully allocated\n" - " '--output' takes the format in which the output must be done (human or json)\n" - " '-n' skips the target volume creation (useful if the volume is created\n" - " prior to running qemu-img)\n" - "\n" - "Parameters to check subcommand:\n" - " '-r' tries to repair any inconsistencies that are found during the check.\n" - " '-r leaks' repairs only cluster leaks, whereas '-r all' fixes all\n" - " kinds of errors, with a higher risk of choosing the wrong fix or\n" - " hiding corruption that has already occurred.\n" - "\n" - "Parameters to snapshot subcommand:\n" - " 'snapshot' is the name of the snapshot to create, apply or delete\n" - " '-a' applies a snapshot (revert disk to saved state)\n" - " '-c' creates a snapshot\n" - " '-d' deletes a snapshot\n" - " '-l' lists all snapshots in the given image\n" - "\n" - "Parameters to compare subcommand:\n" - " '-f' first image format\n" - " '-F' second image format\n" - " '-s' run in Strict mode - fail on different image size or sector allocation\n"; - - printf("%s\nSupported formats:", help_msg); - bdrv_iterate_format(format_print, NULL); - printf("\n"); - exit(EXIT_SUCCESS); -} - -static QemuOptsList qemu_object_opts = { - .name = "object", - .implied_opt_name = "qom-type", - .head = QTAILQ_HEAD_INITIALIZER(qemu_object_opts.head), - .desc = { - { } - }, -}; - -static QemuOptsList qemu_source_opts = { - .name = "source", - .implied_opt_name = "file", - .head = QTAILQ_HEAD_INITIALIZER(qemu_source_opts.head), - .desc = { - { } - }, -}; - -static int GCC_FMT_ATTR(2, 3) qprintf(bool quiet, const char *fmt, ...) -{ - int ret = 0; - if (!quiet) { - va_list args; - va_start(args, fmt); - ret = vprintf(fmt, args); - va_end(args); - } - return ret; -} - - -static int print_block_option_help(const char *filename, const char *fmt) -{ - BlockDriver *drv, *proto_drv; - QemuOptsList *create_opts = NULL; - Error *local_err = NULL; - - /* Find driver and parse its options */ - drv = bdrv_find_format(fmt); - if (!drv) { - error_report("Unknown file format '%s'", fmt); - return 1; - } - - create_opts = qemu_opts_append(create_opts, drv->create_opts); - if (filename) { - proto_drv = bdrv_find_protocol(filename, true, &local_err); - if (!proto_drv) { - error_report_err(local_err); - qemu_opts_free(create_opts); - return 1; - } - create_opts = qemu_opts_append(create_opts, proto_drv->create_opts); - } - - qemu_opts_print_help(create_opts); - qemu_opts_free(create_opts); - return 0; -} - - -static int img_open_password(BlockBackend *blk, const char *filename, - int flags, bool quiet) -{ - BlockDriverState *bs; - char password[256]; - - bs = blk_bs(blk); - if (bdrv_is_encrypted(bs) && bdrv_key_required(bs) && - !(flags & BDRV_O_NO_IO)) { - qprintf(quiet, "Disk image '%s' is encrypted.\n", filename); - if (qemu_read_password(password, sizeof(password)) < 0) { - error_report("No password given"); - return -1; - } - if (bdrv_set_key(bs, password) < 0) { - error_report("invalid password"); - return -1; - } - } - return 0; -} - - -static BlockBackend *img_open_opts(const char *optstr, - QemuOpts *opts, int flags, bool writethrough, - bool quiet) -{ - QDict *options; - Error *local_err = NULL; - BlockBackend *blk; - options = qemu_opts_to_qdict(opts, NULL); - blk = blk_new_open(NULL, NULL, options, flags, &local_err); - if (!blk) { - error_reportf_err(local_err, "Could not open '%s': ", optstr); - return NULL; - } - blk_set_enable_write_cache(blk, !writethrough); - - if (img_open_password(blk, optstr, flags, quiet) < 0) { - blk_unref(blk); - return NULL; - } - return blk; -} - -static BlockBackend *img_open_file(const char *filename, - const char *fmt, int flags, - bool writethrough, bool quiet) -{ - BlockBackend *blk; - Error *local_err = NULL; - QDict *options = NULL; - - if (fmt) { - options = qdict_new(); - qdict_put(options, "driver", qstring_from_str(fmt)); - } - - blk = blk_new_open(filename, NULL, options, flags, &local_err); - if (!blk) { - error_reportf_err(local_err, "Could not open '%s': ", filename); - return NULL; - } - blk_set_enable_write_cache(blk, !writethrough); - - if (img_open_password(blk, filename, flags, quiet) < 0) { - blk_unref(blk); - return NULL; - } - return blk; -} - - -static BlockBackend *img_open(bool image_opts, - const char *filename, - const char *fmt, int flags, bool writethrough, - bool quiet) -{ - BlockBackend *blk; - if (image_opts) { - QemuOpts *opts; - if (fmt) { - error_report("--image-opts and --format are mutually exclusive"); - return NULL; - } - opts = qemu_opts_parse_noisily(qemu_find_opts("source"), - filename, true); - if (!opts) { - return NULL; - } - blk = img_open_opts(filename, opts, flags, writethrough, quiet); - } else { - blk = img_open_file(filename, fmt, flags, writethrough, quiet); - } - return blk; -} - - -static int add_old_style_options(const char *fmt, QemuOpts *opts, - const char *base_filename, - const char *base_fmt) -{ - Error *err = NULL; - - if (base_filename) { - qemu_opt_set(opts, BLOCK_OPT_BACKING_FILE, base_filename, &err); - if (err) { - error_report("Backing file not supported for file format '%s'", - fmt); - error_free(err); - return -1; - } - } - if (base_fmt) { - qemu_opt_set(opts, BLOCK_OPT_BACKING_FMT, base_fmt, &err); - if (err) { - error_report("Backing file format not supported for file " - "format '%s'", fmt); - error_free(err); - return -1; - } - } - return 0; -} - -static int img_create(int argc, char **argv) -{ - int c; - uint64_t img_size = -1; - const char *fmt = "raw"; - const char *base_fmt = NULL; - const char *filename; - const char *base_filename = NULL; - char *options = NULL; - Error *local_err = NULL; - bool quiet = false; - - for(;;) { - static const struct option long_options[] = { - {"help", no_argument, 0, 'h'}, - {"object", required_argument, 0, OPTION_OBJECT}, - {0, 0, 0, 0} - }; - c = getopt_long(argc, argv, "F:b:f:he6o:q", - long_options, NULL); - if (c == -1) { - break; - } - switch(c) { - case '?': - case 'h': - help(); - break; - case 'F': - base_fmt = optarg; - break; - case 'b': - base_filename = optarg; - break; - case 'f': - fmt = optarg; - break; - case 'e': - error_report("option -e is deprecated, please use \'-o " - "encryption\' instead!"); - goto fail; - case '6': - error_report("option -6 is deprecated, please use \'-o " - "compat6\' instead!"); - goto fail; - case 'o': - if (!is_valid_option_list(optarg)) { - error_report("Invalid option list: %s", optarg); - 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; - break; - case OPTION_OBJECT: { - QemuOpts *opts; - opts = qemu_opts_parse_noisily(&qemu_object_opts, - optarg, true); - if (!opts) { - goto fail; - } - } break; - } - } - - /* Get the filename */ - filename = (optind < argc) ? argv[optind] : NULL; - if (options && has_help_option(options)) { - g_free(options); - return print_block_option_help(filename, fmt); - } - - if (optind >= argc) { - error_exit("Expecting image file name"); - } - optind++; - - if (qemu_opts_foreach(&qemu_object_opts, - user_creatable_add_opts_foreach, - NULL, NULL)) { - goto fail; - } - - /* Get image size, if specified */ - if (optind < argc) { - int64_t sval; - char *end; - sval = qemu_strtosz_suffix(argv[optind++], &end, - QEMU_STRTOSZ_DEFSUFFIX_B); - if (sval < 0 || *end) { - if (sval == -ERANGE) { - error_report("Image size must be less than 8 EiB!"); - } else { - error_report("Invalid image size specified! You may use k, M, " - "G, T, P or E suffixes for "); - error_report("kilobytes, megabytes, gigabytes, terabytes, " - "petabytes and exabytes."); - } - goto fail; - } - img_size = (uint64_t)sval; - } - if (optind != argc) { - error_exit("Unexpected argument: %s", argv[optind]); - } - - bdrv_img_create(filename, fmt, base_filename, base_fmt, - options, img_size, 0, &local_err, quiet); - if (local_err) { - error_reportf_err(local_err, "%s: ", filename); - goto fail; - } - - g_free(options); - return 0; - -fail: - g_free(options); - return 1; -} - -static void dump_json_image_check(ImageCheck *check, bool quiet) -{ - Error *local_err = NULL; - QString *str; - QmpOutputVisitor *ov = qmp_output_visitor_new(); - QObject *obj; - visit_type_ImageCheck(qmp_output_get_visitor(ov), NULL, &check, - &local_err); - obj = qmp_output_get_qobject(ov); - str = qobject_to_json_pretty(obj); - assert(str != NULL); - qprintf(quiet, "%s\n", qstring_get_str(str)); - qobject_decref(obj); - qmp_output_visitor_cleanup(ov); - QDECREF(str); -} - -static void dump_human_image_check(ImageCheck *check, bool quiet) -{ - if (!(check->corruptions || check->leaks || check->check_errors)) { - qprintf(quiet, "No errors were found on the image.\n"); - } else { - if (check->corruptions) { - qprintf(quiet, "\n%" PRId64 " errors were found on the image.\n" - "Data may be corrupted, or further writes to the image " - "may corrupt it.\n", - check->corruptions); - } - - if (check->leaks) { - qprintf(quiet, - "\n%" PRId64 " leaked clusters were found on the image.\n" - "This means waste of disk space, but no harm to data.\n", - check->leaks); - } - - if (check->check_errors) { - qprintf(quiet, - "\n%" PRId64 - " internal errors have occurred during the check.\n", - check->check_errors); - } - } - - if (check->total_clusters != 0 && check->allocated_clusters != 0) { - qprintf(quiet, "%" PRId64 "/%" PRId64 " = %0.2f%% allocated, " - "%0.2f%% fragmented, %0.2f%% compressed clusters\n", - check->allocated_clusters, check->total_clusters, - check->allocated_clusters * 100.0 / check->total_clusters, - check->fragmented_clusters * 100.0 / check->allocated_clusters, - check->compressed_clusters * 100.0 / - check->allocated_clusters); - } - - if (check->image_end_offset) { - qprintf(quiet, - "Image end offset: %" PRId64 "\n", check->image_end_offset); - } -} - -static int collect_image_check(BlockDriverState *bs, - ImageCheck *check, - const char *filename, - const char *fmt, - int fix) -{ - int ret; - BdrvCheckResult result; - - ret = bdrv_check(bs, &result, fix); - if (ret < 0) { - return ret; - } - - check->filename = g_strdup(filename); - check->format = g_strdup(bdrv_get_format_name(bs)); - check->check_errors = result.check_errors; - check->corruptions = result.corruptions; - check->has_corruptions = result.corruptions != 0; - check->leaks = result.leaks; - check->has_leaks = result.leaks != 0; - check->corruptions_fixed = result.corruptions_fixed; - check->has_corruptions_fixed = result.corruptions != 0; - check->leaks_fixed = result.leaks_fixed; - check->has_leaks_fixed = result.leaks != 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; - check->has_total_clusters = result.bfi.total_clusters != 0; - check->allocated_clusters = result.bfi.allocated_clusters; - check->has_allocated_clusters = result.bfi.allocated_clusters != 0; - check->fragmented_clusters = result.bfi.fragmented_clusters; - check->has_fragmented_clusters = result.bfi.fragmented_clusters != 0; - check->compressed_clusters = result.bfi.compressed_clusters; - check->has_compressed_clusters = result.bfi.compressed_clusters != 0; - - return 0; -} - -/* - * Checks an image for consistency. Exit codes: - * - * 0 - Check completed, image is good - * 1 - Check not completed because of internal errors - * 2 - Check completed, image is corrupted - * 3 - Check completed, image has leaked clusters, but is good otherwise - * 63 - Checks are not supported by the image format - */ -static int img_check(int argc, char **argv) -{ - int c, ret; - OutputFormat output_format = OFORMAT_HUMAN; - const char *filename, *fmt, *output, *cache; - BlockBackend *blk; - BlockDriverState *bs; - int fix = 0; - int flags = BDRV_O_CHECK; - bool writethrough; - ImageCheck *check; - bool quiet = false; - bool image_opts = false; - - fmt = NULL; - output = NULL; - cache = BDRV_DEFAULT_CACHE; - - for(;;) { - int option_index = 0; - static const struct option long_options[] = { - {"help", no_argument, 0, 'h'}, - {"format", required_argument, 0, 'f'}, - {"repair", required_argument, 0, 'r'}, - {"output", required_argument, 0, OPTION_OUTPUT}, - {"object", required_argument, 0, OPTION_OBJECT}, - {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, - {0, 0, 0, 0} - }; - c = getopt_long(argc, argv, "hf:r:T:q", - long_options, &option_index); - if (c == -1) { - break; - } - switch(c) { - case '?': - case 'h': - help(); - break; - case 'f': - fmt = optarg; - break; - case 'r': - flags |= BDRV_O_RDWR; - - if (!strcmp(optarg, "leaks")) { - fix = BDRV_FIX_LEAKS; - } else if (!strcmp(optarg, "all")) { - fix = BDRV_FIX_LEAKS | BDRV_FIX_ERRORS; - } else { - error_exit("Unknown option value for -r " - "(expecting 'leaks' or 'all'): %s", optarg); - } - break; - case OPTION_OUTPUT: - output = optarg; - break; - case 'T': - cache = optarg; - break; - case 'q': - quiet = true; - break; - case OPTION_OBJECT: { - QemuOpts *opts; - opts = qemu_opts_parse_noisily(&qemu_object_opts, - optarg, true); - if (!opts) { - return 1; - } - } break; - case OPTION_IMAGE_OPTS: - image_opts = true; - break; - } - } - if (optind != argc - 1) { - error_exit("Expecting one image file name"); - } - filename = argv[optind++]; - - if (output && !strcmp(output, "json")) { - output_format = OFORMAT_JSON; - } else if (output && !strcmp(output, "human")) { - output_format = OFORMAT_HUMAN; - } else if (output) { - error_report("--output must be used with human or json as argument."); - return 1; - } - - if (qemu_opts_foreach(&qemu_object_opts, - user_creatable_add_opts_foreach, - NULL, NULL)) { - return 1; - } - - ret = bdrv_parse_cache_mode(cache, &flags, &writethrough); - if (ret < 0) { - error_report("Invalid source cache option: %s", cache); - return 1; - } - - blk = img_open(image_opts, filename, fmt, flags, writethrough, quiet); - if (!blk) { - return 1; - } - bs = blk_bs(blk); - - check = g_new0(ImageCheck, 1); - ret = collect_image_check(bs, check, filename, fmt, fix); - - if (ret == -ENOTSUP) { - error_report("This image format does not support checks"); - ret = 63; - goto fail; - } - - if (check->corruptions_fixed || check->leaks_fixed) { - int corruptions_fixed, leaks_fixed; - - leaks_fixed = check->leaks_fixed; - corruptions_fixed = check->corruptions_fixed; - - if (output_format == OFORMAT_HUMAN) { - qprintf(quiet, - "The following inconsistencies were found and repaired:\n\n" - " %" PRId64 " leaked clusters\n" - " %" PRId64 " corruptions\n\n" - "Double checking the fixed image now...\n", - check->leaks_fixed, - check->corruptions_fixed); - } - - ret = collect_image_check(bs, check, filename, fmt, 0); - - check->leaks_fixed = leaks_fixed; - check->corruptions_fixed = corruptions_fixed; - } - - if (!ret) { - switch (output_format) { - case OFORMAT_HUMAN: - dump_human_image_check(check, quiet); - break; - case OFORMAT_JSON: - dump_json_image_check(check, quiet); - break; - } - } - - if (ret || check->check_errors) { - if (ret) { - error_report("Check failed: %s", strerror(-ret)); - } else { - error_report("Check failed"); - } - ret = 1; - goto fail; - } - - if (check->corruptions) { - ret = 2; - } else if (check->leaks) { - ret = 3; - } else { - ret = 0; - } - -fail: - qapi_free_ImageCheck(check); - blk_unref(blk); - return ret; -} - -typedef struct CommonBlockJobCBInfo { - BlockDriverState *bs; - Error **errp; -} CommonBlockJobCBInfo; - -static void common_block_job_cb(void *opaque, int ret) -{ - CommonBlockJobCBInfo *cbi = opaque; - - if (ret < 0) { - error_setg_errno(cbi->errp, -ret, "Block job failed"); - } -} - -static void run_block_job(BlockJob *job, Error **errp) -{ - AioContext *aio_context = bdrv_get_aio_context(job->bs); - - do { - aio_poll(aio_context, true); - qemu_progress_print(job->len ? - ((float)job->offset / job->len * 100.f) : 0.0f, 0); - } while (!job->ready); - - block_job_complete_sync(job, errp); - - /* A block job may finish instantaneously without publishing any progress, - * so just signal completion here */ - qemu_progress_print(100.f, 0); -} - -static int img_commit(int argc, char **argv) -{ - int c, ret, flags; - const char *filename, *fmt, *cache, *base; - BlockBackend *blk; - BlockDriverState *bs, *base_bs; - bool progress = false, quiet = false, drop = false; - bool writethrough; - Error *local_err = NULL; - CommonBlockJobCBInfo cbi; - bool image_opts = false; - - fmt = NULL; - cache = BDRV_DEFAULT_CACHE; - base = NULL; - for(;;) { - static const struct option long_options[] = { - {"help", no_argument, 0, 'h'}, - {"object", required_argument, 0, OPTION_OBJECT}, - {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, - {0, 0, 0, 0} - }; - c = getopt_long(argc, argv, "f:ht:b:dpq", - long_options, NULL); - if (c == -1) { - break; - } - switch(c) { - case '?': - case 'h': - help(); - break; - case 'f': - fmt = optarg; - break; - case 't': - cache = optarg; - break; - case 'b': - base = optarg; - /* -b implies -d */ - drop = true; - break; - case 'd': - drop = true; - break; - case 'p': - progress = true; - break; - case 'q': - quiet = true; - break; - case OPTION_OBJECT: { - QemuOpts *opts; - opts = qemu_opts_parse_noisily(&qemu_object_opts, - optarg, true); - if (!opts) { - return 1; - } - } break; - case OPTION_IMAGE_OPTS: - image_opts = true; - break; - } - } - - /* Progress is not shown in Quiet mode */ - if (quiet) { - progress = false; - } - - if (optind != argc - 1) { - error_exit("Expecting one image file name"); - } - filename = argv[optind++]; - - if (qemu_opts_foreach(&qemu_object_opts, - user_creatable_add_opts_foreach, - NULL, NULL)) { - return 1; - } - - flags = BDRV_O_RDWR | BDRV_O_UNMAP; - ret = bdrv_parse_cache_mode(cache, &flags, &writethrough); - if (ret < 0) { - error_report("Invalid cache option: %s", cache); - return 1; - } - - blk = img_open(image_opts, filename, fmt, flags, writethrough, quiet); - if (!blk) { - return 1; - } - bs = blk_bs(blk); - - qemu_progress_init(progress, 1.f); - qemu_progress_print(0.f, 100); - - if (base) { - base_bs = bdrv_find_backing_image(bs, base); - if (!base_bs) { - error_setg(&local_err, QERR_BASE_NOT_FOUND, base); - goto done; - } - } else { - /* This is different from QMP, which by default uses the deepest file in - * the backing chain (i.e., the very base); however, the traditional - * behavior of qemu-img commit is using the immediate backing file. */ - base_bs = backing_bs(bs); - if (!base_bs) { - error_setg(&local_err, "Image does not have a backing file"); - goto done; - } - } - - cbi = (CommonBlockJobCBInfo){ - .errp = &local_err, - .bs = bs, - }; - - commit_active_start(bs, base_bs, 0, BLOCKDEV_ON_ERROR_REPORT, - common_block_job_cb, &cbi, &local_err); - if (local_err) { - goto done; - } - - /* When the block job completes, the BlockBackend reference will point to - * the old backing file. In order to avoid that the top image is already - * deleted, so we can still empty it afterwards, increment the reference - * counter here preemptively. */ - if (!drop) { - bdrv_ref(bs); - } - - run_block_job(bs->job, &local_err); - if (local_err) { - goto unref_backing; - } - - if (!drop && bs->drv->bdrv_make_empty) { - ret = bs->drv->bdrv_make_empty(bs); - if (ret) { - error_setg_errno(&local_err, -ret, "Could not empty %s", - filename); - goto unref_backing; - } - } - -unref_backing: - if (!drop) { - bdrv_unref(bs); - } - -done: - qemu_progress_end(); - - blk_unref(blk); - - if (local_err) { - error_report_err(local_err); - return 1; - } - - qprintf(quiet, "Image committed.\n"); - return 0; -} - -/* - * Returns true iff the first sector pointed to by 'buf' contains at least - * a non-NUL byte. - * - * 'pnum' is set to the number of sectors (including and immediately following - * the first one) that are known to be in the same allocated/unallocated state. - */ -static int is_allocated_sectors(const uint8_t *buf, int n, int *pnum) -{ - bool is_zero; - int i; - - if (n <= 0) { - *pnum = 0; - return 0; - } - is_zero = buffer_is_zero(buf, 512); - for(i = 1; i < n; i++) { - buf += 512; - if (is_zero != buffer_is_zero(buf, 512)) { - break; - } - } - *pnum = i; - return !is_zero; -} - -/* - * Like is_allocated_sectors, but if the buffer starts with a used sector, - * up to 'min' consecutive sectors containing zeros are ignored. This avoids - * breaking up write requests for only small sparse areas. - */ -static int is_allocated_sectors_min(const uint8_t *buf, int n, int *pnum, - int min) -{ - int ret; - int num_checked, num_used; - - if (n < min) { - min = n; - } - - ret = is_allocated_sectors(buf, n, pnum); - if (!ret) { - return ret; - } - - num_used = *pnum; - buf += BDRV_SECTOR_SIZE * *pnum; - n -= *pnum; - num_checked = num_used; - - while (n > 0) { - ret = is_allocated_sectors(buf, n, pnum); - - buf += BDRV_SECTOR_SIZE * *pnum; - n -= *pnum; - num_checked += *pnum; - if (ret) { - num_used = num_checked; - } else if (*pnum >= min) { - break; - } - } - - *pnum = num_used; - return 1; -} - -/* - * Compares two buffers sector by sector. Returns 0 if the first sector of both - * buffers matches, non-zero otherwise. - * - * pnum is set to the number of sectors (including and immediately following - * the first one) that are known to have the same comparison result - */ -static int compare_sectors(const uint8_t *buf1, const uint8_t *buf2, int n, - int *pnum) -{ - bool res; - int i; - - if (n <= 0) { - *pnum = 0; - return 0; - } - - res = !!memcmp(buf1, buf2, 512); - for(i = 1; i < n; i++) { - buf1 += 512; - buf2 += 512; - - if (!!memcmp(buf1, buf2, 512) != res) { - break; - } - } - - *pnum = i; - return res; -} - -#define IO_BUF_SIZE (2 * 1024 * 1024) - -static int64_t sectors_to_bytes(int64_t sectors) -{ - return sectors << BDRV_SECTOR_BITS; -} - -static int64_t sectors_to_process(int64_t total, int64_t from) -{ - return MIN(total - from, IO_BUF_SIZE >> BDRV_SECTOR_BITS); -} - -/* - * Check if passed sectors are empty (not allocated or contain only 0 bytes) - * - * Returns 0 in case sectors are filled with 0, 1 if sectors contain non-zero - * data and negative value on error. - * - * @param blk: BlockBackend for the image - * @param sect_num: Number of first sector to check - * @param sect_count: Number of sectors to check - * @param filename: Name of disk file we are checking (logging purpose) - * @param buffer: Allocated buffer for storing read data - * @param quiet: Flag for quiet mode - */ -static int check_empty_sectors(BlockBackend *blk, int64_t sect_num, - int sect_count, const char *filename, - uint8_t *buffer, bool quiet) -{ - int pnum, ret = 0; - ret = blk_read(blk, sect_num, buffer, sect_count); - if (ret < 0) { - error_report("Error while reading offset %" PRId64 " of %s: %s", - sectors_to_bytes(sect_num), filename, strerror(-ret)); - return ret; - } - ret = is_allocated_sectors(buffer, sect_count, &pnum); - if (ret || pnum != sect_count) { - qprintf(quiet, "Content mismatch at offset %" PRId64 "!\n", - sectors_to_bytes(ret ? sect_num : sect_num + pnum)); - return 1; - } - - return 0; -} - -/* - * Compares two images. Exit codes: - * - * 0 - Images are identical - * 1 - Images differ - * >1 - Error occurred - */ -static int img_compare(int argc, char **argv) -{ - const char *fmt1 = NULL, *fmt2 = NULL, *cache, *filename1, *filename2; - BlockBackend *blk1, *blk2; - BlockDriverState *bs1, *bs2; - int64_t total_sectors1, total_sectors2; - uint8_t *buf1 = NULL, *buf2 = NULL; - int pnum1, pnum2; - int allocated1, allocated2; - int ret = 0; /* return value - 0 Ident, 1 Different, >1 Error */ - bool progress = false, quiet = false, strict = false; - int flags; - bool writethrough; - int64_t total_sectors; - int64_t sector_num = 0; - int64_t nb_sectors; - int c, pnum; - uint64_t progress_base; - bool image_opts = false; - - cache = BDRV_DEFAULT_CACHE; - for (;;) { - static const struct option long_options[] = { - {"help", no_argument, 0, 'h'}, - {"object", required_argument, 0, OPTION_OBJECT}, - {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, - {0, 0, 0, 0} - }; - c = getopt_long(argc, argv, "hf:F:T:pqs", - long_options, NULL); - if (c == -1) { - break; - } - switch (c) { - case '?': - case 'h': - help(); - break; - case 'f': - fmt1 = optarg; - break; - case 'F': - fmt2 = optarg; - break; - case 'T': - cache = optarg; - break; - case 'p': - progress = true; - break; - case 'q': - quiet = true; - break; - case 's': - strict = true; - break; - case OPTION_OBJECT: { - QemuOpts *opts; - opts = qemu_opts_parse_noisily(&qemu_object_opts, - optarg, true); - if (!opts) { - ret = 2; - goto out4; - } - } break; - case OPTION_IMAGE_OPTS: - image_opts = true; - break; - } - } - - /* Progress is not shown in Quiet mode */ - if (quiet) { - progress = false; - } - - - if (optind != argc - 2) { - error_exit("Expecting two image file names"); - } - filename1 = argv[optind++]; - filename2 = argv[optind++]; - - if (qemu_opts_foreach(&qemu_object_opts, - user_creatable_add_opts_foreach, - NULL, NULL)) { - ret = 2; - goto out4; - } - - /* Initialize before goto out */ - qemu_progress_init(progress, 2.0); - - flags = 0; - ret = bdrv_parse_cache_mode(cache, &flags, &writethrough); - if (ret < 0) { - error_report("Invalid source cache option: %s", cache); - ret = 2; - goto out3; - } - - blk1 = img_open(image_opts, filename1, fmt1, flags, writethrough, quiet); - if (!blk1) { - ret = 2; - goto out3; - } - - blk2 = img_open(image_opts, filename2, fmt2, flags, writethrough, quiet); - if (!blk2) { - ret = 2; - goto out2; - } - bs1 = blk_bs(blk1); - bs2 = blk_bs(blk2); - - buf1 = blk_blockalign(blk1, IO_BUF_SIZE); - buf2 = blk_blockalign(blk2, IO_BUF_SIZE); - total_sectors1 = blk_nb_sectors(blk1); - if (total_sectors1 < 0) { - error_report("Can't get size of %s: %s", - filename1, strerror(-total_sectors1)); - ret = 4; - goto out; - } - total_sectors2 = blk_nb_sectors(blk2); - if (total_sectors2 < 0) { - error_report("Can't get size of %s: %s", - filename2, strerror(-total_sectors2)); - ret = 4; - goto out; - } - total_sectors = MIN(total_sectors1, total_sectors2); - progress_base = MAX(total_sectors1, total_sectors2); - - qemu_progress_print(0, 100); - - if (strict && total_sectors1 != total_sectors2) { - ret = 1; - qprintf(quiet, "Strict mode: Image size mismatch!\n"); - goto out; - } - - for (;;) { - int64_t status1, status2; - BlockDriverState *file; - - nb_sectors = sectors_to_process(total_sectors, sector_num); - if (nb_sectors <= 0) { - break; - } - status1 = bdrv_get_block_status_above(bs1, NULL, sector_num, - total_sectors1 - sector_num, - &pnum1, &file); - if (status1 < 0) { - ret = 3; - error_report("Sector allocation test failed for %s", filename1); - goto out; - } - allocated1 = status1 & BDRV_BLOCK_ALLOCATED; - - status2 = bdrv_get_block_status_above(bs2, NULL, sector_num, - total_sectors2 - sector_num, - &pnum2, &file); - if (status2 < 0) { - ret = 3; - error_report("Sector allocation test failed for %s", filename2); - goto out; - } - allocated2 = status2 & BDRV_BLOCK_ALLOCATED; - if (pnum1) { - nb_sectors = MIN(nb_sectors, pnum1); - } - if (pnum2) { - nb_sectors = MIN(nb_sectors, pnum2); - } - - if (strict) { - if ((status1 & ~BDRV_BLOCK_OFFSET_MASK) != - (status2 & ~BDRV_BLOCK_OFFSET_MASK)) { - ret = 1; - qprintf(quiet, "Strict mode: Offset %" PRId64 - " block status mismatch!\n", - sectors_to_bytes(sector_num)); - goto out; - } - } - if ((status1 & BDRV_BLOCK_ZERO) && (status2 & BDRV_BLOCK_ZERO)) { - nb_sectors = MIN(pnum1, pnum2); - } else if (allocated1 == allocated2) { - if (allocated1) { - ret = blk_read(blk1, sector_num, buf1, nb_sectors); - if (ret < 0) { - error_report("Error while reading offset %" PRId64 " of %s:" - " %s", sectors_to_bytes(sector_num), filename1, - strerror(-ret)); - ret = 4; - goto out; - } - ret = blk_read(blk2, sector_num, buf2, nb_sectors); - if (ret < 0) { - error_report("Error while reading offset %" PRId64 - " of %s: %s", sectors_to_bytes(sector_num), - filename2, strerror(-ret)); - ret = 4; - goto out; - } - ret = compare_sectors(buf1, buf2, nb_sectors, &pnum); - if (ret || pnum != nb_sectors) { - qprintf(quiet, "Content mismatch at offset %" PRId64 "!\n", - sectors_to_bytes( - ret ? sector_num : sector_num + pnum)); - ret = 1; - goto out; - } - } - } else { - - if (allocated1) { - ret = check_empty_sectors(blk1, sector_num, nb_sectors, - filename1, buf1, quiet); - } else { - ret = check_empty_sectors(blk2, sector_num, nb_sectors, - filename2, buf1, quiet); - } - if (ret) { - if (ret < 0) { - error_report("Error while reading offset %" PRId64 ": %s", - sectors_to_bytes(sector_num), strerror(-ret)); - ret = 4; - } - goto out; - } - } - sector_num += nb_sectors; - qemu_progress_print(((float) nb_sectors / progress_base)*100, 100); - } - - if (total_sectors1 != total_sectors2) { - BlockBackend *blk_over; - int64_t total_sectors_over; - const char *filename_over; - - qprintf(quiet, "Warning: Image size mismatch!\n"); - if (total_sectors1 > total_sectors2) { - total_sectors_over = total_sectors1; - blk_over = blk1; - filename_over = filename1; - } else { - total_sectors_over = total_sectors2; - blk_over = blk2; - filename_over = filename2; - } - - for (;;) { - nb_sectors = sectors_to_process(total_sectors_over, sector_num); - if (nb_sectors <= 0) { - break; - } - ret = bdrv_is_allocated_above(blk_bs(blk_over), NULL, sector_num, - nb_sectors, &pnum); - if (ret < 0) { - ret = 3; - error_report("Sector allocation test failed for %s", - filename_over); - goto out; - - } - nb_sectors = pnum; - if (ret) { - ret = check_empty_sectors(blk_over, sector_num, nb_sectors, - filename_over, buf1, quiet); - if (ret) { - if (ret < 0) { - error_report("Error while reading offset %" PRId64 - " of %s: %s", sectors_to_bytes(sector_num), - filename_over, strerror(-ret)); - ret = 4; - } - goto out; - } - } - sector_num += nb_sectors; - qemu_progress_print(((float) nb_sectors / progress_base)*100, 100); - } - } - - qprintf(quiet, "Images are identical.\n"); - ret = 0; - -out: - qemu_vfree(buf1); - qemu_vfree(buf2); - blk_unref(blk2); -out2: - blk_unref(blk1); -out3: - qemu_progress_end(); -out4: - return ret; -} - -enum ImgConvertBlockStatus { - BLK_DATA, - BLK_ZERO, - BLK_BACKING_FILE, -}; - -typedef struct ImgConvertState { - BlockBackend **src; - int64_t *src_sectors; - int src_cur, src_num; - int64_t src_cur_offset; - int64_t total_sectors; - int64_t allocated_sectors; - enum ImgConvertBlockStatus status; - int64_t sector_next_status; - BlockBackend *target; - bool has_zero_init; - bool compressed; - bool target_has_backing; - int min_sparse; - size_t cluster_sectors; - size_t buf_sectors; -} ImgConvertState; - -static void convert_select_part(ImgConvertState *s, int64_t sector_num) -{ - assert(sector_num >= s->src_cur_offset); - while (sector_num - s->src_cur_offset >= s->src_sectors[s->src_cur]) { - s->src_cur_offset += s->src_sectors[s->src_cur]; - s->src_cur++; - assert(s->src_cur < s->src_num); - } -} - -static int convert_iteration_sectors(ImgConvertState *s, int64_t sector_num) -{ - int64_t ret; - int n; - - convert_select_part(s, sector_num); - - assert(s->total_sectors > sector_num); - n = MIN(s->total_sectors - sector_num, BDRV_REQUEST_MAX_SECTORS); - - if (s->sector_next_status <= sector_num) { - BlockDriverState *file; - ret = bdrv_get_block_status(blk_bs(s->src[s->src_cur]), - sector_num - s->src_cur_offset, - n, &n, &file); - if (ret < 0) { - return ret; - } - - if (ret & BDRV_BLOCK_ZERO) { - s->status = BLK_ZERO; - } else if (ret & BDRV_BLOCK_DATA) { - s->status = BLK_DATA; - } else if (!s->target_has_backing) { - /* Without a target backing file we must copy over the contents of - * the backing file as well. */ - /* TODO Check block status of the backing file chain to avoid - * needlessly reading zeroes and limiting the iteration to the - * buffer size */ - s->status = BLK_DATA; - } else { - s->status = BLK_BACKING_FILE; - } - - s->sector_next_status = sector_num + n; - } - - n = MIN(n, s->sector_next_status - sector_num); - if (s->status == BLK_DATA) { - n = MIN(n, s->buf_sectors); - } - - /* We need to write complete clusters for compressed images, so if an - * unallocated area is shorter than that, we must consider the whole - * cluster allocated. */ - if (s->compressed) { - if (n < s->cluster_sectors) { - n = MIN(s->cluster_sectors, s->total_sectors - sector_num); - s->status = BLK_DATA; - } else { - n = QEMU_ALIGN_DOWN(n, s->cluster_sectors); - } - } - - return n; -} - -static int convert_read(ImgConvertState *s, int64_t sector_num, int nb_sectors, - uint8_t *buf) -{ - int n; - int ret; - - assert(nb_sectors <= s->buf_sectors); - while (nb_sectors > 0) { - BlockBackend *blk; - int64_t bs_sectors; - - /* In the case of compression with multiple source files, we can get a - * nb_sectors that spreads into the next part. So we must be able to - * read across multiple BDSes for one convert_read() call. */ - convert_select_part(s, sector_num); - blk = s->src[s->src_cur]; - bs_sectors = s->src_sectors[s->src_cur]; - - n = MIN(nb_sectors, bs_sectors - (sector_num - s->src_cur_offset)); - ret = blk_read(blk, sector_num - s->src_cur_offset, buf, n); - if (ret < 0) { - return ret; - } - - sector_num += n; - nb_sectors -= n; - buf += n * BDRV_SECTOR_SIZE; - } - - return 0; -} - -static int convert_write(ImgConvertState *s, int64_t sector_num, int nb_sectors, - const uint8_t *buf) -{ - int ret; - - while (nb_sectors > 0) { - int n = nb_sectors; - - switch (s->status) { - case BLK_BACKING_FILE: - /* If we have a backing file, leave clusters unallocated that are - * unallocated in the source image, so that the backing file is - * visible at the respective offset. */ - assert(s->target_has_backing); - break; - - case BLK_DATA: - /* We must always write compressed clusters as a whole, so don't - * try to find zeroed parts in the buffer. We can only save the - * write if the buffer is completely zeroed and we're allowed to - * keep the target sparse. */ - if (s->compressed) { - if (s->has_zero_init && s->min_sparse && - buffer_is_zero(buf, n * BDRV_SECTOR_SIZE)) - { - assert(!s->target_has_backing); - break; - } - - ret = blk_write_compressed(s->target, sector_num, buf, n); - if (ret < 0) { - return ret; - } - break; - } - - /* If there is real non-zero data or we're told to keep the target - * fully allocated (-S 0), we must write it. Otherwise we can treat - * it as zero sectors. */ - if (!s->min_sparse || - is_allocated_sectors_min(buf, n, &n, s->min_sparse)) - { - ret = blk_write(s->target, sector_num, buf, n); - if (ret < 0) { - return ret; - } - break; - } - /* fall-through */ - - case BLK_ZERO: - if (s->has_zero_init) { - break; - } - ret = blk_write_zeroes(s->target, sector_num, n, 0); - if (ret < 0) { - return ret; - } - break; - } - - sector_num += n; - nb_sectors -= n; - buf += n * BDRV_SECTOR_SIZE; - } - - return 0; -} - -static int convert_do_copy(ImgConvertState *s) -{ - uint8_t *buf = NULL; - int64_t sector_num, allocated_done; - int ret; - int n; - - /* Check whether we have zero initialisation or can get it efficiently */ - s->has_zero_init = s->min_sparse && !s->target_has_backing - ? bdrv_has_zero_init(blk_bs(s->target)) - : false; - - if (!s->has_zero_init && !s->target_has_backing && - bdrv_can_write_zeroes_with_unmap(blk_bs(s->target))) - { - ret = bdrv_make_zero(blk_bs(s->target), BDRV_REQ_MAY_UNMAP); - if (ret == 0) { - s->has_zero_init = true; - } - } - - /* Allocate buffer for copied data. For compressed images, only one cluster - * can be copied at a time. */ - if (s->compressed) { - if (s->cluster_sectors <= 0 || s->cluster_sectors > s->buf_sectors) { - error_report("invalid cluster size"); - ret = -EINVAL; - goto fail; - } - s->buf_sectors = s->cluster_sectors; - } - buf = blk_blockalign(s->target, s->buf_sectors * BDRV_SECTOR_SIZE); - - /* Calculate allocated sectors for progress */ - s->allocated_sectors = 0; - sector_num = 0; - while (sector_num < s->total_sectors) { - n = convert_iteration_sectors(s, sector_num); - if (n < 0) { - ret = n; - goto fail; - } - if (s->status == BLK_DATA || (!s->min_sparse && s->status == BLK_ZERO)) - { - s->allocated_sectors += n; - } - sector_num += n; - } - - /* Do the copy */ - s->src_cur = 0; - s->src_cur_offset = 0; - s->sector_next_status = 0; - - sector_num = 0; - allocated_done = 0; - - while (sector_num < s->total_sectors) { - n = convert_iteration_sectors(s, sector_num); - if (n < 0) { - ret = n; - goto fail; - } - if (s->status == BLK_DATA || (!s->min_sparse && s->status == BLK_ZERO)) - { - allocated_done += n; - qemu_progress_print(100.0 * allocated_done / s->allocated_sectors, - 0); - } - - if (s->status == BLK_DATA) { - ret = convert_read(s, sector_num, n, buf); - if (ret < 0) { - error_report("error while reading sector %" PRId64 - ": %s", sector_num, strerror(-ret)); - goto fail; - } - } else if (!s->min_sparse && s->status == BLK_ZERO) { - n = MIN(n, s->buf_sectors); - memset(buf, 0, n * BDRV_SECTOR_SIZE); - s->status = BLK_DATA; - } - - ret = convert_write(s, sector_num, n, buf); - if (ret < 0) { - error_report("error while writing sector %" PRId64 - ": %s", sector_num, strerror(-ret)); - goto fail; - } - - sector_num += n; - } - - if (s->compressed) { - /* signal EOF to align */ - ret = blk_write_compressed(s->target, 0, NULL, 0); - if (ret < 0) { - goto fail; - } - } - - ret = 0; -fail: - qemu_vfree(buf); - return ret; -} - -static int img_convert(int argc, char **argv) -{ - int c, bs_n, bs_i, compress, cluster_sectors, skip_create; - int64_t ret = 0; - int progress = 0, flags, src_flags; - bool writethrough, src_writethrough; - const char *fmt, *out_fmt, *cache, *src_cache, *out_baseimg, *out_filename; - BlockDriver *drv, *proto_drv; - BlockBackend **blk = NULL, *out_blk = NULL; - BlockDriverState **bs = NULL, *out_bs = NULL; - int64_t total_sectors; - int64_t *bs_sectors = NULL; - size_t bufsectors = IO_BUF_SIZE / BDRV_SECTOR_SIZE; - BlockDriverInfo bdi; - QemuOpts *opts = NULL; - QemuOptsList *create_opts = NULL; - const char *out_baseimg_param; - char *options = NULL; - const char *snapshot_name = NULL; - int min_sparse = 8; /* Need at least 4k of zeros for sparse detection */ - bool quiet = false; - Error *local_err = NULL; - QemuOpts *sn_opts = NULL; - ImgConvertState state; - bool image_opts = false; - - fmt = NULL; - out_fmt = "raw"; - cache = "unsafe"; - src_cache = BDRV_DEFAULT_CACHE; - out_baseimg = NULL; - compress = 0; - skip_create = 0; - for(;;) { - static const struct option long_options[] = { - {"help", no_argument, 0, 'h'}, - {"object", required_argument, 0, OPTION_OBJECT}, - {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, - {0, 0, 0, 0} - }; - c = getopt_long(argc, argv, "hf:O:B:ce6o:s:l:S:pt:T:qn", - long_options, NULL); - if (c == -1) { - break; - } - switch(c) { - case '?': - case 'h': - help(); - break; - case 'f': - fmt = optarg; - break; - case 'O': - out_fmt = optarg; - break; - case 'B': - out_baseimg = optarg; - break; - case 'c': - compress = 1; - break; - case 'e': - error_report("option -e is deprecated, please use \'-o " - "encryption\' instead!"); - ret = -1; - goto fail_getopt; - case '6': - error_report("option -6 is deprecated, please use \'-o " - "compat6\' instead!"); - ret = -1; - goto fail_getopt; - case 'o': - if (!is_valid_option_list(optarg)) { - error_report("Invalid option list: %s", optarg); - ret = -1; - 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 's': - snapshot_name = optarg; - break; - case 'l': - if (strstart(optarg, SNAPSHOT_OPT_BASE, NULL)) { - sn_opts = qemu_opts_parse_noisily(&internal_snapshot_opts, - optarg, false); - if (!sn_opts) { - error_report("Failed in parsing snapshot param '%s'", - optarg); - ret = -1; - goto fail_getopt; - } - } else { - snapshot_name = optarg; - } - break; - case 'S': - { - int64_t sval; - char *end; - sval = qemu_strtosz_suffix(optarg, &end, QEMU_STRTOSZ_DEFSUFFIX_B); - if (sval < 0 || *end) { - error_report("Invalid minimum zero buffer size for sparse output specified"); - ret = -1; - goto fail_getopt; - } - - min_sparse = sval / BDRV_SECTOR_SIZE; - break; - } - case 'p': - progress = 1; - break; - case 't': - cache = optarg; - break; - case 'T': - src_cache = optarg; - break; - case 'q': - quiet = true; - break; - case 'n': - skip_create = 1; - break; - case OPTION_OBJECT: - opts = qemu_opts_parse_noisily(&qemu_object_opts, - optarg, true); - if (!opts) { - goto fail_getopt; - } - break; - case OPTION_IMAGE_OPTS: - image_opts = true; - break; - } - } - - if (qemu_opts_foreach(&qemu_object_opts, - user_creatable_add_opts_foreach, - NULL, NULL)) { - goto fail_getopt; - } - - /* Initialize before goto out */ - if (quiet) { - progress = 0; - } - qemu_progress_init(progress, 1.0); - - bs_n = argc - optind - 1; - out_filename = bs_n >= 1 ? argv[argc - 1] : NULL; - - if (options && has_help_option(options)) { - ret = print_block_option_help(out_filename, out_fmt); - goto out; - } - - if (bs_n < 1) { - error_exit("Must specify image file name"); - } - - - if (bs_n > 1 && out_baseimg) { - error_report("-B makes no sense when concatenating multiple input " - "images"); - ret = -1; - goto out; - } - - src_flags = 0; - ret = bdrv_parse_cache_mode(src_cache, &src_flags, &src_writethrough); - if (ret < 0) { - error_report("Invalid source cache option: %s", src_cache); - goto out; - } - - qemu_progress_print(0, 100); - - blk = g_new0(BlockBackend *, bs_n); - bs = g_new0(BlockDriverState *, bs_n); - bs_sectors = g_new(int64_t, bs_n); - - total_sectors = 0; - for (bs_i = 0; bs_i < bs_n; bs_i++) { - blk[bs_i] = img_open(image_opts, argv[optind + bs_i], - fmt, src_flags, src_writethrough, quiet); - if (!blk[bs_i]) { - ret = -1; - goto out; - } - bs[bs_i] = blk_bs(blk[bs_i]); - bs_sectors[bs_i] = blk_nb_sectors(blk[bs_i]); - if (bs_sectors[bs_i] < 0) { - error_report("Could not get size of %s: %s", - argv[optind + bs_i], strerror(-bs_sectors[bs_i])); - ret = -1; - goto out; - } - total_sectors += bs_sectors[bs_i]; - } - - if (sn_opts) { - ret = bdrv_snapshot_load_tmp(bs[0], - qemu_opt_get(sn_opts, SNAPSHOT_OPT_ID), - qemu_opt_get(sn_opts, SNAPSHOT_OPT_NAME), - &local_err); - } else if (snapshot_name != NULL) { - if (bs_n > 1) { - error_report("No support for concatenating multiple snapshot"); - ret = -1; - goto out; - } - - bdrv_snapshot_load_tmp_by_id_or_name(bs[0], snapshot_name, &local_err); - } - if (local_err) { - error_reportf_err(local_err, "Failed to load snapshot: "); - ret = -1; - goto out; - } - - /* Find driver and parse its options */ - drv = bdrv_find_format(out_fmt); - if (!drv) { - error_report("Unknown file format '%s'", out_fmt); - ret = -1; - goto out; - } - - proto_drv = bdrv_find_protocol(out_filename, true, &local_err); - if (!proto_drv) { - error_report_err(local_err); - ret = -1; - goto out; - } - - if (!skip_create) { - if (!drv->create_opts) { - error_report("Format driver '%s' does not support image creation", - drv->format_name); - ret = -1; - goto out; - } - - if (!proto_drv->create_opts) { - error_report("Protocol driver '%s' does not support image creation", - proto_drv->format_name); - ret = -1; - goto out; - } - - create_opts = qemu_opts_append(create_opts, drv->create_opts); - create_opts = qemu_opts_append(create_opts, proto_drv->create_opts); - - opts = qemu_opts_create(create_opts, NULL, 0, &error_abort); - if (options) { - qemu_opts_do_parse(opts, options, NULL, &local_err); - if (local_err) { - error_report_err(local_err); - ret = -1; - goto out; - } - } - - qemu_opt_set_number(opts, BLOCK_OPT_SIZE, total_sectors * 512, - &error_abort); - ret = add_old_style_options(out_fmt, opts, out_baseimg, NULL); - if (ret < 0) { - goto out; - } - } - - /* Get backing file name if -o backing_file was used */ - out_baseimg_param = qemu_opt_get(opts, BLOCK_OPT_BACKING_FILE); - if (out_baseimg_param) { - out_baseimg = out_baseimg_param; - } - - /* Check if compression is supported */ - if (compress) { - bool encryption = - qemu_opt_get_bool(opts, BLOCK_OPT_ENCRYPT, false); - const char *preallocation = - qemu_opt_get(opts, BLOCK_OPT_PREALLOC); - - if (!drv->bdrv_write_compressed) { - error_report("Compression not supported for this file format"); - ret = -1; - goto out; - } - - if (encryption) { - error_report("Compression and encryption not supported at " - "the same time"); - ret = -1; - goto out; - } - - if (preallocation - && strcmp(preallocation, "off")) - { - error_report("Compression and preallocation not supported at " - "the same time"); - ret = -1; - goto out; - } - } - - if (!skip_create) { - /* Create the new image */ - ret = bdrv_create(drv, out_filename, opts, &local_err); - if (ret < 0) { - error_reportf_err(local_err, "%s: error while converting %s: ", - out_filename, out_fmt); - goto out; - } - } - - flags = min_sparse ? (BDRV_O_RDWR | BDRV_O_UNMAP) : BDRV_O_RDWR; - ret = bdrv_parse_cache_mode(cache, &flags, &writethrough); - if (ret < 0) { - error_report("Invalid cache option: %s", cache); - goto out; - } - - /* XXX we should allow --image-opts to trigger use of - * img_open() here, but then we have trouble with - * the bdrv_create() call which takes different params. - * Not critical right now, so fix can wait... - */ - out_blk = img_open_file(out_filename, out_fmt, flags, writethrough, quiet); - if (!out_blk) { - ret = -1; - goto out; - } - out_bs = blk_bs(out_blk); - - /* increase bufsectors from the default 4096 (2M) if opt_transfer_length - * or discard_alignment of the out_bs is greater. Limit to 32768 (16MB) - * as maximum. */ - bufsectors = MIN(32768, - MAX(bufsectors, MAX(out_bs->bl.opt_transfer_length, - out_bs->bl.discard_alignment)) - ); - - if (skip_create) { - int64_t output_sectors = blk_nb_sectors(out_blk); - if (output_sectors < 0) { - error_report("unable to get output image length: %s", - strerror(-output_sectors)); - ret = -1; - goto out; - } else if (output_sectors < total_sectors) { - error_report("output file is smaller than input file"); - ret = -1; - goto out; - } - } - - cluster_sectors = 0; - ret = bdrv_get_info(out_bs, &bdi); - if (ret < 0) { - if (compress) { - error_report("could not get block driver info"); - goto out; - } - } else { - compress = compress || bdi.needs_compressed_writes; - cluster_sectors = bdi.cluster_size / BDRV_SECTOR_SIZE; - } - - state = (ImgConvertState) { - .src = blk, - .src_sectors = bs_sectors, - .src_num = bs_n, - .total_sectors = total_sectors, - .target = out_blk, - .compressed = compress, - .target_has_backing = (bool) out_baseimg, - .min_sparse = min_sparse, - .cluster_sectors = cluster_sectors, - .buf_sectors = bufsectors, - }; - ret = convert_do_copy(&state); - -out: - if (!ret) { - qemu_progress_print(100, 0); - } - qemu_progress_end(); - qemu_opts_del(opts); - qemu_opts_free(create_opts); - qemu_opts_del(sn_opts); - blk_unref(out_blk); - g_free(bs); - if (blk) { - for (bs_i = 0; bs_i < bs_n; bs_i++) { - blk_unref(blk[bs_i]); - } - g_free(blk); - } - g_free(bs_sectors); -fail_getopt: - g_free(options); - - if (ret) { - return 1; - } - return 0; -} - - -static void dump_snapshots(BlockDriverState *bs) -{ - QEMUSnapshotInfo *sn_tab, *sn; - int nb_sns, i; - - nb_sns = bdrv_snapshot_list(bs, &sn_tab); - if (nb_sns <= 0) - return; - printf("Snapshot list:\n"); - bdrv_snapshot_dump(fprintf, stdout, NULL); - printf("\n"); - for(i = 0; i < nb_sns; i++) { - sn = &sn_tab[i]; - bdrv_snapshot_dump(fprintf, stdout, sn); - printf("\n"); - } - g_free(sn_tab); -} - -static void dump_json_image_info_list(ImageInfoList *list) -{ - Error *local_err = NULL; - QString *str; - QmpOutputVisitor *ov = qmp_output_visitor_new(); - QObject *obj; - visit_type_ImageInfoList(qmp_output_get_visitor(ov), NULL, &list, - &local_err); - obj = qmp_output_get_qobject(ov); - str = qobject_to_json_pretty(obj); - assert(str != NULL); - printf("%s\n", qstring_get_str(str)); - qobject_decref(obj); - qmp_output_visitor_cleanup(ov); - QDECREF(str); -} - -static void dump_json_image_info(ImageInfo *info) -{ - Error *local_err = NULL; - QString *str; - QmpOutputVisitor *ov = qmp_output_visitor_new(); - QObject *obj; - visit_type_ImageInfo(qmp_output_get_visitor(ov), NULL, &info, &local_err); - obj = qmp_output_get_qobject(ov); - str = qobject_to_json_pretty(obj); - assert(str != NULL); - printf("%s\n", qstring_get_str(str)); - qobject_decref(obj); - qmp_output_visitor_cleanup(ov); - QDECREF(str); -} - -static void dump_human_image_info_list(ImageInfoList *list) -{ - ImageInfoList *elem; - bool delim = false; - - for (elem = list; elem; elem = elem->next) { - if (delim) { - printf("\n"); - } - delim = true; - - bdrv_image_info_dump(fprintf, stdout, elem->value); - } -} - -static gboolean str_equal_func(gconstpointer a, gconstpointer b) -{ - return strcmp(a, b) == 0; -} - -/** - * Open an image file chain and return an ImageInfoList - * - * @filename: topmost image filename - * @fmt: topmost image format (may be NULL to autodetect) - * @chain: true - enumerate entire backing file chain - * false - only topmost image file - * - * Returns a list of ImageInfo objects or NULL if there was an error opening an - * image file. If there was an error a message will have been printed to - * stderr. - */ -static ImageInfoList *collect_image_info_list(bool image_opts, - const char *filename, - const char *fmt, - bool chain) -{ - ImageInfoList *head = NULL; - ImageInfoList **last = &head; - GHashTable *filenames; - Error *err = NULL; - - filenames = g_hash_table_new_full(g_str_hash, str_equal_func, NULL, NULL); - - while (filename) { - BlockBackend *blk; - BlockDriverState *bs; - ImageInfo *info; - ImageInfoList *elem; - - if (g_hash_table_lookup_extended(filenames, filename, NULL, NULL)) { - error_report("Backing file '%s' creates an infinite loop.", - filename); - goto err; - } - g_hash_table_insert(filenames, (gpointer)filename, NULL); - - blk = img_open(image_opts, filename, fmt, - BDRV_O_NO_BACKING | BDRV_O_NO_IO, false, false); - if (!blk) { - goto err; - } - bs = blk_bs(blk); - - bdrv_query_image_info(bs, &info, &err); - if (err) { - error_report_err(err); - blk_unref(blk); - goto err; - } - - elem = g_new0(ImageInfoList, 1); - elem->value = info; - *last = elem; - last = &elem->next; - - blk_unref(blk); - - filename = fmt = NULL; - if (chain) { - if (info->has_full_backing_filename) { - filename = info->full_backing_filename; - } else if (info->has_backing_filename) { - error_report("Could not determine absolute backing filename," - " but backing filename '%s' present", - info->backing_filename); - goto err; - } - if (info->has_backing_filename_format) { - fmt = info->backing_filename_format; - } - } - } - g_hash_table_destroy(filenames); - return head; - -err: - qapi_free_ImageInfoList(head); - g_hash_table_destroy(filenames); - return NULL; -} - -static int img_info(int argc, char **argv) -{ - int c; - OutputFormat output_format = OFORMAT_HUMAN; - bool chain = false; - const char *filename, *fmt, *output; - ImageInfoList *list; - bool image_opts = false; - - fmt = NULL; - output = NULL; - for(;;) { - int option_index = 0; - static const struct option long_options[] = { - {"help", no_argument, 0, 'h'}, - {"format", required_argument, 0, 'f'}, - {"output", required_argument, 0, OPTION_OUTPUT}, - {"backing-chain", no_argument, 0, OPTION_BACKING_CHAIN}, - {"object", required_argument, 0, OPTION_OBJECT}, - {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, - {0, 0, 0, 0} - }; - c = getopt_long(argc, argv, "f:h", - long_options, &option_index); - if (c == -1) { - break; - } - switch(c) { - case '?': - case 'h': - help(); - break; - case 'f': - fmt = optarg; - break; - case OPTION_OUTPUT: - output = optarg; - break; - case OPTION_BACKING_CHAIN: - chain = true; - break; - case OPTION_OBJECT: { - QemuOpts *opts; - opts = qemu_opts_parse_noisily(&qemu_object_opts, - optarg, true); - if (!opts) { - return 1; - } - } break; - case OPTION_IMAGE_OPTS: - image_opts = true; - break; - } - } - if (optind != argc - 1) { - error_exit("Expecting one image file name"); - } - filename = argv[optind++]; - - if (output && !strcmp(output, "json")) { - output_format = OFORMAT_JSON; - } else if (output && !strcmp(output, "human")) { - output_format = OFORMAT_HUMAN; - } else if (output) { - error_report("--output must be used with human or json as argument."); - return 1; - } - - if (qemu_opts_foreach(&qemu_object_opts, - user_creatable_add_opts_foreach, - NULL, NULL)) { - return 1; - } - - list = collect_image_info_list(image_opts, filename, fmt, chain); - if (!list) { - return 1; - } - - switch (output_format) { - case OFORMAT_HUMAN: - dump_human_image_info_list(list); - break; - case OFORMAT_JSON: - if (chain) { - dump_json_image_info_list(list); - } else { - dump_json_image_info(list->value); - } - break; - } - - qapi_free_ImageInfoList(list); - return 0; -} - -static void dump_map_entry(OutputFormat output_format, MapEntry *e, - MapEntry *next) -{ - switch (output_format) { - case OFORMAT_HUMAN: - if (e->data && !e->has_offset) { - error_report("File contains external, encrypted or compressed clusters."); - exit(1); - } - if (e->data && !e->zero) { - printf("%#-16"PRIx64"%#-16"PRIx64"%#-16"PRIx64"%s\n", - e->start, e->length, - e->has_offset ? e->offset : 0, - e->has_filename ? e->filename : ""); - } - /* This format ignores the distinction between 0, ZERO and ZERO|DATA. - * Modify the flags here to allow more coalescing. - */ - if (next && (!next->data || next->zero)) { - next->data = false; - next->zero = true; - } - break; - case OFORMAT_JSON: - printf("%s{ \"start\": %"PRId64", \"length\": %"PRId64"," - " \"depth\": %"PRId64", \"zero\": %s, \"data\": %s", - (e->start == 0 ? "[" : ",\n"), - e->start, e->length, e->depth, - e->zero ? "true" : "false", - e->data ? "true" : "false"); - if (e->has_offset) { - printf(", \"offset\": %"PRId64"", e->offset); - } - putchar('}'); - - if (!next) { - printf("]\n"); - } - break; - } -} - -static int get_block_status(BlockDriverState *bs, int64_t sector_num, - int nb_sectors, MapEntry *e) -{ - int64_t ret; - int depth; - BlockDriverState *file; - bool has_offset; - - /* As an optimization, we could cache the current range of unallocated - * clusters in each file of the chain, and avoid querying the same - * range repeatedly. - */ - - depth = 0; - for (;;) { - ret = bdrv_get_block_status(bs, sector_num, nb_sectors, &nb_sectors, - &file); - if (ret < 0) { - return ret; - } - assert(nb_sectors); - if (ret & (BDRV_BLOCK_ZERO|BDRV_BLOCK_DATA)) { - break; - } - bs = backing_bs(bs); - if (bs == NULL) { - ret = 0; - break; - } - - depth++; - } - - has_offset = !!(ret & BDRV_BLOCK_OFFSET_VALID); - - *e = (MapEntry) { - .start = sector_num * BDRV_SECTOR_SIZE, - .length = nb_sectors * BDRV_SECTOR_SIZE, - .data = !!(ret & BDRV_BLOCK_DATA), - .zero = !!(ret & BDRV_BLOCK_ZERO), - .offset = ret & BDRV_BLOCK_OFFSET_MASK, - .has_offset = has_offset, - .depth = depth, - .has_filename = file && has_offset, - .filename = file && has_offset ? file->filename : NULL, - }; - - return 0; -} - -static inline bool entry_mergeable(const MapEntry *curr, const MapEntry *next) -{ - if (curr->length == 0) { - return false; - } - if (curr->zero != next->zero || - curr->data != next->data || - curr->depth != next->depth || - curr->has_filename != next->has_filename || - curr->has_offset != next->has_offset) { - return false; - } - if (curr->has_filename && strcmp(curr->filename, next->filename)) { - return false; - } - if (curr->has_offset && curr->offset + curr->length != next->offset) { - return false; - } - return true; -} - -static int img_map(int argc, char **argv) -{ - int c; - OutputFormat output_format = OFORMAT_HUMAN; - BlockBackend *blk; - BlockDriverState *bs; - const char *filename, *fmt, *output; - int64_t length; - MapEntry curr = { .length = 0 }, next; - int ret = 0; - bool image_opts = false; - - fmt = NULL; - output = NULL; - for (;;) { - int option_index = 0; - static const struct option long_options[] = { - {"help", no_argument, 0, 'h'}, - {"format", required_argument, 0, 'f'}, - {"output", required_argument, 0, OPTION_OUTPUT}, - {"object", required_argument, 0, OPTION_OBJECT}, - {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, - {0, 0, 0, 0} - }; - c = getopt_long(argc, argv, "f:h", - long_options, &option_index); - if (c == -1) { - break; - } - switch (c) { - case '?': - case 'h': - help(); - break; - case 'f': - fmt = optarg; - break; - case OPTION_OUTPUT: - output = optarg; - break; - case OPTION_OBJECT: { - QemuOpts *opts; - opts = qemu_opts_parse_noisily(&qemu_object_opts, - optarg, true); - if (!opts) { - return 1; - } - } break; - case OPTION_IMAGE_OPTS: - image_opts = true; - break; - } - } - if (optind != argc - 1) { - error_exit("Expecting one image file name"); - } - filename = argv[optind]; - - if (output && !strcmp(output, "json")) { - output_format = OFORMAT_JSON; - } else if (output && !strcmp(output, "human")) { - output_format = OFORMAT_HUMAN; - } else if (output) { - error_report("--output must be used with human or json as argument."); - return 1; - } - - if (qemu_opts_foreach(&qemu_object_opts, - user_creatable_add_opts_foreach, - NULL, NULL)) { - return 1; - } - - blk = img_open(image_opts, filename, fmt, 0, false, false); - if (!blk) { - return 1; - } - bs = blk_bs(blk); - - if (output_format == OFORMAT_HUMAN) { - printf("%-16s%-16s%-16s%s\n", "Offset", "Length", "Mapped to", "File"); - } - - length = blk_getlength(blk); - while (curr.start + curr.length < length) { - int64_t nsectors_left; - int64_t sector_num; - int n; - - sector_num = (curr.start + curr.length) >> BDRV_SECTOR_BITS; - - /* Probe up to 1 GiB at a time. */ - nsectors_left = DIV_ROUND_UP(length, BDRV_SECTOR_SIZE) - sector_num; - n = MIN(1 << (30 - BDRV_SECTOR_BITS), nsectors_left); - ret = get_block_status(bs, sector_num, n, &next); - - if (ret < 0) { - error_report("Could not read file metadata: %s", strerror(-ret)); - goto out; - } - - if (entry_mergeable(&curr, &next)) { - curr.length += next.length; - continue; - } - - if (curr.length > 0) { - dump_map_entry(output_format, &curr, &next); - } - curr = next; - } - - dump_map_entry(output_format, &curr, NULL); - -out: - blk_unref(blk); - return ret < 0; -} - -#define SNAPSHOT_LIST 1 -#define SNAPSHOT_CREATE 2 -#define SNAPSHOT_APPLY 3 -#define SNAPSHOT_DELETE 4 - -static int img_snapshot(int argc, char **argv) -{ - BlockBackend *blk; - BlockDriverState *bs; - QEMUSnapshotInfo sn; - char *filename, *snapshot_name = NULL; - int c, ret = 0, bdrv_oflags; - int action = 0; - qemu_timeval tv; - bool quiet = false; - Error *err = NULL; - bool image_opts = false; - - bdrv_oflags = BDRV_O_RDWR; - /* Parse commandline parameters */ - for(;;) { - static const struct option long_options[] = { - {"help", no_argument, 0, 'h'}, - {"object", required_argument, 0, OPTION_OBJECT}, - {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, - {0, 0, 0, 0} - }; - c = getopt_long(argc, argv, "la:c:d:hq", - long_options, NULL); - if (c == -1) { - break; - } - switch(c) { - case '?': - case 'h': - help(); - return 0; - case 'l': - if (action) { - error_exit("Cannot mix '-l', '-a', '-c', '-d'"); - return 0; - } - action = SNAPSHOT_LIST; - bdrv_oflags &= ~BDRV_O_RDWR; /* no need for RW */ - break; - case 'a': - if (action) { - error_exit("Cannot mix '-l', '-a', '-c', '-d'"); - return 0; - } - action = SNAPSHOT_APPLY; - snapshot_name = optarg; - break; - case 'c': - if (action) { - error_exit("Cannot mix '-l', '-a', '-c', '-d'"); - return 0; - } - action = SNAPSHOT_CREATE; - snapshot_name = optarg; - break; - case 'd': - if (action) { - error_exit("Cannot mix '-l', '-a', '-c', '-d'"); - return 0; - } - action = SNAPSHOT_DELETE; - snapshot_name = optarg; - break; - case 'q': - quiet = true; - break; - case OPTION_OBJECT: { - QemuOpts *opts; - opts = qemu_opts_parse_noisily(&qemu_object_opts, - optarg, true); - if (!opts) { - return 1; - } - } break; - case OPTION_IMAGE_OPTS: - image_opts = true; - break; - } - } - - if (optind != argc - 1) { - error_exit("Expecting one image file name"); - } - filename = argv[optind++]; - - if (qemu_opts_foreach(&qemu_object_opts, - user_creatable_add_opts_foreach, - NULL, NULL)) { - return 1; - } - - /* Open the image */ - blk = img_open(image_opts, filename, NULL, bdrv_oflags, false, quiet); - if (!blk) { - return 1; - } - bs = blk_bs(blk); - - /* Perform the requested action */ - switch(action) { - case SNAPSHOT_LIST: - dump_snapshots(bs); - break; - - case SNAPSHOT_CREATE: - memset(&sn, 0, sizeof(sn)); - pstrcpy(sn.name, sizeof(sn.name), snapshot_name); - - qemu_gettimeofday(&tv); - sn.date_sec = tv.tv_sec; - sn.date_nsec = tv.tv_usec * 1000; - - ret = bdrv_snapshot_create(bs, &sn); - if (ret) { - error_report("Could not create snapshot '%s': %d (%s)", - snapshot_name, ret, strerror(-ret)); - } - break; - - case SNAPSHOT_APPLY: - ret = bdrv_snapshot_goto(bs, snapshot_name); - if (ret) { - error_report("Could not apply snapshot '%s': %d (%s)", - snapshot_name, ret, strerror(-ret)); - } - break; - - case SNAPSHOT_DELETE: - bdrv_snapshot_delete_by_id_or_name(bs, snapshot_name, &err); - if (err) { - error_reportf_err(err, "Could not delete snapshot '%s': ", - snapshot_name); - ret = 1; - } - break; - } - - /* Cleanup */ - blk_unref(blk); - if (ret) { - return 1; - } - return 0; -} - -static int img_rebase(int argc, char **argv) -{ - BlockBackend *blk = NULL, *blk_old_backing = NULL, *blk_new_backing = NULL; - uint8_t *buf_old = NULL; - uint8_t *buf_new = NULL; - BlockDriverState *bs = NULL; - char *filename; - const char *fmt, *cache, *src_cache, *out_basefmt, *out_baseimg; - int c, flags, src_flags, ret; - bool writethrough, src_writethrough; - int unsafe = 0; - int progress = 0; - bool quiet = false; - Error *local_err = NULL; - bool image_opts = false; - - /* Parse commandline parameters */ - fmt = NULL; - cache = BDRV_DEFAULT_CACHE; - src_cache = BDRV_DEFAULT_CACHE; - out_baseimg = NULL; - out_basefmt = NULL; - for(;;) { - static const struct option long_options[] = { - {"help", no_argument, 0, 'h'}, - {"object", required_argument, 0, OPTION_OBJECT}, - {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, - {0, 0, 0, 0} - }; - c = getopt_long(argc, argv, "hf:F:b:upt:T:q", - long_options, NULL); - if (c == -1) { - break; - } - switch(c) { - case '?': - case 'h': - help(); - return 0; - case 'f': - fmt = optarg; - break; - case 'F': - out_basefmt = optarg; - break; - case 'b': - out_baseimg = optarg; - break; - case 'u': - unsafe = 1; - break; - case 'p': - progress = 1; - break; - case 't': - cache = optarg; - break; - case 'T': - src_cache = optarg; - break; - case 'q': - quiet = true; - break; - case OPTION_OBJECT: { - QemuOpts *opts; - opts = qemu_opts_parse_noisily(&qemu_object_opts, - optarg, true); - if (!opts) { - return 1; - } - } break; - case OPTION_IMAGE_OPTS: - image_opts = true; - break; - } - } - - if (quiet) { - progress = 0; - } - - if (optind != argc - 1) { - error_exit("Expecting one image file name"); - } - if (!unsafe && !out_baseimg) { - error_exit("Must specify backing file (-b) or use unsafe mode (-u)"); - } - filename = argv[optind++]; - - if (qemu_opts_foreach(&qemu_object_opts, - user_creatable_add_opts_foreach, - NULL, NULL)) { - return 1; - } - - qemu_progress_init(progress, 2.0); - qemu_progress_print(0, 100); - - flags = BDRV_O_RDWR | (unsafe ? BDRV_O_NO_BACKING : 0); - ret = bdrv_parse_cache_mode(cache, &flags, &writethrough); - if (ret < 0) { - error_report("Invalid cache option: %s", cache); - goto out; - } - - src_flags = 0; - ret = bdrv_parse_cache_mode(src_cache, &src_flags, &src_writethrough); - if (ret < 0) { - error_report("Invalid source cache option: %s", src_cache); - goto out; - } - - /* The source files are opened read-only, don't care about WCE */ - assert((src_flags & BDRV_O_RDWR) == 0); - (void) src_writethrough; - - /* - * Open the images. - * - * Ignore the old backing file for unsafe rebase in case we want to correct - * the reference to a renamed or moved backing file. - */ - blk = img_open(image_opts, filename, fmt, flags, writethrough, quiet); - if (!blk) { - ret = -1; - goto out; - } - bs = blk_bs(blk); - - if (out_basefmt != NULL) { - if (bdrv_find_format(out_basefmt) == NULL) { - error_report("Invalid format name: '%s'", out_basefmt); - ret = -1; - goto out; - } - } - - /* For safe rebasing we need to compare old and new backing file */ - if (!unsafe) { - char backing_name[PATH_MAX]; - QDict *options = NULL; - - if (bs->backing_format[0] != '\0') { - options = qdict_new(); - qdict_put(options, "driver", qstring_from_str(bs->backing_format)); - } - - bdrv_get_backing_filename(bs, backing_name, sizeof(backing_name)); - blk_old_backing = blk_new_open(backing_name, NULL, - options, src_flags, &local_err); - if (!blk_old_backing) { - error_reportf_err(local_err, - "Could not open old backing file '%s': ", - backing_name); - goto out; - } - - if (out_baseimg[0]) { - if (out_basefmt) { - options = qdict_new(); - qdict_put(options, "driver", qstring_from_str(out_basefmt)); - } else { - options = NULL; - } - - blk_new_backing = blk_new_open(out_baseimg, NULL, - options, src_flags, &local_err); - if (!blk_new_backing) { - error_reportf_err(local_err, - "Could not open new backing file '%s': ", - out_baseimg); - goto out; - } - } - } - - /* - * Check each unallocated cluster in the COW file. If it is unallocated, - * accesses go to the backing file. We must therefore compare this cluster - * in the old and new backing file, and if they differ we need to copy it - * from the old backing file into the COW file. - * - * If qemu-img crashes during this step, no harm is done. The content of - * the image is the same as the original one at any time. - */ - if (!unsafe) { - int64_t num_sectors; - int64_t old_backing_num_sectors; - int64_t new_backing_num_sectors = 0; - uint64_t sector; - int n; - float local_progress = 0; - - buf_old = blk_blockalign(blk, IO_BUF_SIZE); - buf_new = blk_blockalign(blk, IO_BUF_SIZE); - - num_sectors = blk_nb_sectors(blk); - if (num_sectors < 0) { - error_report("Could not get size of '%s': %s", - filename, strerror(-num_sectors)); - ret = -1; - goto out; - } - old_backing_num_sectors = blk_nb_sectors(blk_old_backing); - if (old_backing_num_sectors < 0) { - char backing_name[PATH_MAX]; - - bdrv_get_backing_filename(bs, backing_name, sizeof(backing_name)); - error_report("Could not get size of '%s': %s", - backing_name, strerror(-old_backing_num_sectors)); - ret = -1; - goto out; - } - if (blk_new_backing) { - new_backing_num_sectors = blk_nb_sectors(blk_new_backing); - if (new_backing_num_sectors < 0) { - error_report("Could not get size of '%s': %s", - out_baseimg, strerror(-new_backing_num_sectors)); - ret = -1; - goto out; - } - } - - if (num_sectors != 0) { - local_progress = (float)100 / - (num_sectors / MIN(num_sectors, IO_BUF_SIZE / 512)); - } - - for (sector = 0; sector < num_sectors; sector += n) { - - /* How many sectors can we handle with the next read? */ - if (sector + (IO_BUF_SIZE / 512) <= num_sectors) { - n = (IO_BUF_SIZE / 512); - } else { - n = num_sectors - sector; - } - - /* If the cluster is allocated, we don't need to take action */ - ret = bdrv_is_allocated(bs, sector, n, &n); - if (ret < 0) { - error_report("error while reading image metadata: %s", - strerror(-ret)); - goto out; - } - if (ret) { - continue; - } - - /* - * Read old and new backing file and take into consideration that - * backing files may be smaller than the COW image. - */ - if (sector >= old_backing_num_sectors) { - memset(buf_old, 0, n * BDRV_SECTOR_SIZE); - } else { - if (sector + n > old_backing_num_sectors) { - n = old_backing_num_sectors - sector; - } - - ret = blk_read(blk_old_backing, sector, buf_old, n); - if (ret < 0) { - error_report("error while reading from old backing file"); - goto out; - } - } - - if (sector >= new_backing_num_sectors || !blk_new_backing) { - memset(buf_new, 0, n * BDRV_SECTOR_SIZE); - } else { - if (sector + n > new_backing_num_sectors) { - n = new_backing_num_sectors - sector; - } - - ret = blk_read(blk_new_backing, sector, buf_new, n); - if (ret < 0) { - error_report("error while reading from new backing file"); - goto out; - } - } - - /* If they differ, we need to write to the COW file */ - uint64_t written = 0; - - while (written < n) { - int pnum; - - if (compare_sectors(buf_old + written * 512, - buf_new + written * 512, n - written, &pnum)) - { - ret = blk_write(blk, sector + written, - buf_old + written * 512, pnum); - if (ret < 0) { - error_report("Error while writing to COW image: %s", - strerror(-ret)); - goto out; - } - } - - written += pnum; - } - qemu_progress_print(local_progress, 100); - } - } - - /* - * Change the backing file. All clusters that are different from the old - * backing file are overwritten in the COW file now, so the visible content - * doesn't change when we switch the backing file. - */ - if (out_baseimg && *out_baseimg) { - ret = bdrv_change_backing_file(bs, out_baseimg, out_basefmt); - } else { - ret = bdrv_change_backing_file(bs, NULL, NULL); - } - - if (ret == -ENOSPC) { - error_report("Could not change the backing file to '%s': No " - "space left in the file header", out_baseimg); - } else if (ret < 0) { - error_report("Could not change the backing file to '%s': %s", - out_baseimg, strerror(-ret)); - } - - qemu_progress_print(100, 0); - /* - * TODO At this point it is possible to check if any clusters that are - * allocated in the COW file are the same in the backing file. If so, they - * could be dropped from the COW file. Don't do this before switching the - * backing file, in case of a crash this would lead to corruption. - */ -out: - qemu_progress_end(); - /* Cleanup */ - if (!unsafe) { - blk_unref(blk_old_backing); - blk_unref(blk_new_backing); - } - qemu_vfree(buf_old); - qemu_vfree(buf_new); - - blk_unref(blk); - if (ret) { - return 1; - } - return 0; -} - -static int img_resize(int argc, char **argv) -{ - Error *err = NULL; - int c, ret, relative; - const char *filename, *fmt, *size; - int64_t n, total_size; - bool quiet = false; - BlockBackend *blk = NULL; - QemuOpts *param; - - static QemuOptsList resize_options = { - .name = "resize_options", - .head = QTAILQ_HEAD_INITIALIZER(resize_options.head), - .desc = { - { - .name = BLOCK_OPT_SIZE, - .type = QEMU_OPT_SIZE, - .help = "Virtual disk size" - }, { - /* end of list */ - } - }, - }; - bool image_opts = false; - - /* Remove size from argv manually so that negative numbers are not treated - * as options by getopt. */ - if (argc < 3) { - error_exit("Not enough arguments"); - return 1; - } - - size = argv[--argc]; - - /* Parse getopt arguments */ - fmt = NULL; - for(;;) { - static const struct option long_options[] = { - {"help", no_argument, 0, 'h'}, - {"object", required_argument, 0, OPTION_OBJECT}, - {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, - {0, 0, 0, 0} - }; - c = getopt_long(argc, argv, "f:hq", - long_options, NULL); - if (c == -1) { - break; - } - switch(c) { - case '?': - case 'h': - help(); - break; - case 'f': - fmt = optarg; - break; - case 'q': - quiet = true; - break; - case OPTION_OBJECT: { - QemuOpts *opts; - opts = qemu_opts_parse_noisily(&qemu_object_opts, - optarg, true); - if (!opts) { - return 1; - } - } break; - case OPTION_IMAGE_OPTS: - image_opts = true; - break; - } - } - if (optind != argc - 1) { - error_exit("Expecting one image file name"); - } - filename = argv[optind++]; - - if (qemu_opts_foreach(&qemu_object_opts, - user_creatable_add_opts_foreach, - NULL, NULL)) { - return 1; - } - - /* Choose grow, shrink, or absolute resize mode */ - switch (size[0]) { - case '+': - relative = 1; - size++; - break; - case '-': - relative = -1; - size++; - break; - default: - relative = 0; - break; - } - - /* Parse size */ - param = qemu_opts_create(&resize_options, NULL, 0, &error_abort); - qemu_opt_set(param, BLOCK_OPT_SIZE, size, &err); - if (err) { - error_report_err(err); - ret = -1; - qemu_opts_del(param); - goto out; - } - n = qemu_opt_get_size(param, BLOCK_OPT_SIZE, 0); - qemu_opts_del(param); - - blk = img_open(image_opts, filename, fmt, - BDRV_O_RDWR, false, quiet); - if (!blk) { - ret = -1; - goto out; - } - - if (relative) { - total_size = blk_getlength(blk) + n * relative; - } else { - total_size = n; - } - if (total_size <= 0) { - error_report("New image size must be positive"); - ret = -1; - goto out; - } - - ret = blk_truncate(blk, total_size); - switch (ret) { - case 0: - qprintf(quiet, "Image resized.\n"); - break; - case -ENOTSUP: - error_report("This image does not support resize"); - break; - case -EACCES: - error_report("Image is read-only"); - break; - default: - error_report("Error resizing image (%d)", -ret); - break; - } -out: - blk_unref(blk); - if (ret) { - return 1; - } - return 0; -} - -static void amend_status_cb(BlockDriverState *bs, - int64_t offset, int64_t total_work_size, - void *opaque) -{ - qemu_progress_print(100.f * offset / total_work_size, 0); -} - -static int img_amend(int argc, char **argv) -{ - Error *err = NULL; - int c, ret = 0; - char *options = NULL; - QemuOptsList *create_opts = NULL; - QemuOpts *opts = NULL; - const char *fmt = NULL, *filename, *cache; - int flags; - bool writethrough; - bool quiet = false, progress = false; - BlockBackend *blk = NULL; - BlockDriverState *bs = NULL; - bool image_opts = false; - - cache = BDRV_DEFAULT_CACHE; - for (;;) { - static const struct option long_options[] = { - {"help", no_argument, 0, 'h'}, - {"object", required_argument, 0, OPTION_OBJECT}, - {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, - {0, 0, 0, 0} - }; - c = getopt_long(argc, argv, "ho:f:t:pq", - long_options, NULL); - if (c == -1) { - break; - } - - switch (c) { - case 'h': - case '?': - help(); - break; - case 'o': - if (!is_valid_option_list(optarg)) { - error_report("Invalid option list: %s", optarg); - 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; - break; - case 't': - cache = optarg; - break; - case 'p': - progress = true; - break; - case 'q': - quiet = true; - break; - case OPTION_OBJECT: - opts = qemu_opts_parse_noisily(&qemu_object_opts, - optarg, true); - if (!opts) { - ret = -1; - goto out_no_progress; - } - break; - case OPTION_IMAGE_OPTS: - image_opts = true; - break; - } - } - - if (!options) { - error_exit("Must specify options (-o)"); - } - - if (qemu_opts_foreach(&qemu_object_opts, - user_creatable_add_opts_foreach, - NULL, NULL)) { - ret = -1; - goto out_no_progress; - } - - if (quiet) { - progress = false; - } - qemu_progress_init(progress, 1.0); - - filename = (optind == argc - 1) ? argv[argc - 1] : NULL; - if (fmt && has_help_option(options)) { - /* If a format is explicitly specified (and possibly no filename is - * given), print option help here */ - ret = print_block_option_help(filename, fmt); - goto out; - } - - if (optind != argc - 1) { - error_report("Expecting one image file name"); - ret = -1; - goto out; - } - - flags = BDRV_O_RDWR; - ret = bdrv_parse_cache_mode(cache, &flags, &writethrough); - if (ret < 0) { - error_report("Invalid cache option: %s", cache); - goto out; - } - - blk = img_open(image_opts, filename, fmt, flags, writethrough, quiet); - if (!blk) { - ret = -1; - goto out; - } - bs = blk_bs(blk); - - fmt = bs->drv->format_name; - - if (has_help_option(options)) { - /* If the format was auto-detected, print option help here */ - ret = print_block_option_help(filename, fmt); - goto out; - } - - if (!bs->drv->create_opts) { - error_report("Format driver '%s' does not support any options to amend", - fmt); - ret = -1; - goto out; - } - - create_opts = qemu_opts_append(create_opts, bs->drv->create_opts); - opts = qemu_opts_create(create_opts, NULL, 0, &error_abort); - if (options) { - qemu_opts_do_parse(opts, options, NULL, &err); - if (err) { - error_report_err(err); - ret = -1; - goto out; - } - } - - /* In case the driver does not call amend_status_cb() */ - qemu_progress_print(0.f, 0); - ret = bdrv_amend_options(bs, opts, &amend_status_cb, NULL); - qemu_progress_print(100.f, 0); - if (ret < 0) { - error_report("Error while amending options: %s", strerror(-ret)); - goto out; - } - -out: - qemu_progress_end(); - -out_no_progress: - blk_unref(blk); - qemu_opts_del(opts); - qemu_opts_free(create_opts); - g_free(options); - - if (ret) { - return 1; - } - return 0; -} - -static const img_cmd_t img_cmds[] = { -#define DEF(option, callback, arg_string) \ - { option, callback }, -#include "qemu-img-cmds.h" -#undef DEF -#undef GEN_DOCS - { NULL, NULL, }, -}; - -int main(int argc, char **argv) -{ - const img_cmd_t *cmd; - const char *cmdname; - Error *local_error = NULL; - int c; - static const struct option long_options[] = { - {"help", no_argument, 0, 'h'}, - {"version", no_argument, 0, 'v'}, - {0, 0, 0, 0} - }; - -#ifdef CONFIG_POSIX - signal(SIGPIPE, SIG_IGN); -#endif - - error_set_progname(argv[0]); - qemu_init_exec_dir(argv[0]); - - if (qemu_init_main_loop(&local_error)) { - error_report_err(local_error); - exit(EXIT_FAILURE); - } - - if (qcrypto_init(&local_error) < 0) { - error_reportf_err(local_error, "cannot initialize crypto: "); - exit(1); - } - - module_call_init(MODULE_INIT_QOM); - bdrv_init(); - if (argc < 2) { - error_exit("Not enough arguments"); - } - cmdname = argv[1]; - - qemu_add_opts(&qemu_object_opts); - qemu_add_opts(&qemu_source_opts); - - /* find the command */ - for (cmd = img_cmds; cmd->name != NULL; cmd++) { - if (!strcmp(cmdname, cmd->name)) { - return cmd->handler(argc - 1, argv + 1); - } - } - - c = getopt_long(argc, argv, "h", long_options, NULL); - - if (c == 'h') { - help(); - } - if (c == 'v') { - printf(QEMU_IMG_VERSION); - return 0; - } - - /* not found */ - error_exit("Command not found: %s", cmdname); -} -- cgit 1.2.3-korg