* THE SOFTWARE.
*/
#include "qemu/osdep.h"
+#include "qemu-version.h"
#include "qapi/error.h"
#include "qapi-visit.h"
-#include "qapi/qmp-output-visitor.h"
+#include "qapi/qobject-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 "qemu/log.h"
#include "qom/object_interfaces.h"
#include "sysemu/sysemu.h"
#include "sysemu/block-backend.h"
#include "block/blockjob.h"
#include "block/qapi.h"
#include "crypto/init.h"
+#include "trace/control.h"
#include <getopt.h>
#define QEMU_IMG_VERSION "qemu-img version " QEMU_VERSION QEMU_PKGVERSION \
- ", Copyright (c) 2004-2008 Fabrice Bellard\n"
+ "\n" QEMU_COPYRIGHT "\n"
typedef struct img_cmd_t {
const char *name;
OPTION_BACKING_CHAIN = 257,
OPTION_OBJECT = 258,
OPTION_IMAGE_OPTS = 259,
+ OPTION_PATTERN = 260,
+ OPTION_FLUSH_INTERVAL = 261,
+ OPTION_NO_DRAIN = 262,
};
typedef enum OutputFormat {
{
const char *help_msg =
QEMU_IMG_VERSION
- "usage: qemu-img command [command options]\n"
+ "usage: qemu-img [standard options] command [command options]\n"
"QEMU disk image utility\n"
"\n"
+ " '-h', '--help' display this help and exit\n"
+ " '-V', '--version' output version information and exit\n"
+ " '-T', '--trace' [[enable=]<pattern>][,events=<file>][,file=<file>]\n"
+ " specify tracing options\n"
+ "\n"
"Command syntax:\n"
#define DEF(option, callback, arg_string) \
" " arg_string "\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";
+ " '-s' run in Strict mode - fail on different image size or sector allocation\n"
+ "\n"
+ "Parameters to dd subcommand:\n"
+ " 'bs=BYTES' read and write up to BYTES bytes at a time "
+ "(default: 512)\n"
+ " 'count=N' copy only N input blocks\n"
+ " 'if=FILE' read from FILE\n"
+ " 'of=FILE' write to FILE\n"
+ " 'skip=N' skip N bs-sized blocks at the start of input\n";
printf("%s\nSupported formats:", help_msg);
bdrv_iterate_format(format_print, NULL);
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);
+ Visitor *v = qobject_output_visitor_new(&obj);
+
+ visit_type_ImageCheck(v, NULL, &check, &error_abort);
+ visit_complete(v, &obj);
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);
+ visit_free(v);
QDECREF(str);
}
static void run_block_job(BlockJob *job, Error **errp)
{
- AioContext *aio_context = bdrv_get_aio_context(job->bs);
+ AioContext *aio_context = blk_get_aio_context(job->blk);
do {
aio_poll(aio_context, true);
.bs = bs,
};
- commit_active_start(bs, base_bs, 0, BLOCKDEV_ON_ERROR_REPORT,
- common_block_job_cb, &cbi, &local_err);
+ commit_active_start("commit", bs, base_bs, 0, BLOCKDEV_ON_ERROR_REPORT,
+ common_block_job_cb, &cbi, &local_err, false);
if (local_err) {
goto done;
}
uint8_t *buffer, bool quiet)
{
int pnum, ret = 0;
- ret = blk_read(blk, sect_num, buffer, sect_count);
+ ret = blk_pread(blk, sect_num << BDRV_SECTOR_BITS, buffer,
+ sect_count << BDRV_SECTOR_BITS);
if (ret < 0) {
error_report("Error while reading offset %" PRId64 " of %s: %s",
sectors_to_bytes(sect_num), filename, strerror(-ret));
nb_sectors = MIN(pnum1, pnum2);
} else if (allocated1 == allocated2) {
if (allocated1) {
- ret = blk_read(blk1, sector_num, buf1, nb_sectors);
+ ret = blk_pread(blk1, sector_num << BDRV_SECTOR_BITS, buf1,
+ nb_sectors << BDRV_SECTOR_BITS);
if (ret < 0) {
error_report("Error while reading offset %" PRId64 " of %s:"
" %s", sectors_to_bytes(sector_num), filename1,
ret = 4;
goto out;
}
- ret = blk_read(blk2, sector_num, buf2, nb_sectors);
+ ret = blk_pread(blk2, sector_num << BDRV_SECTOR_BITS, buf2,
+ nb_sectors << BDRV_SECTOR_BITS);
if (ret < 0) {
error_report("Error while reading offset %" PRId64
" of %s: %s", sectors_to_bytes(sector_num),
} 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
+ /* 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;
+ ret = bdrv_get_block_status_above(blk_bs(s->src[s->src_cur]), NULL,
+ sector_num - s->src_cur_offset,
+ n, &n, &file);
+ if (ret < 0) {
+ return ret;
+ }
+
+ if (ret & BDRV_BLOCK_ZERO) {
+ s->status = BLK_ZERO;
+ } else {
+ s->status = BLK_DATA;
+ }
} else {
s->status = BLK_BACKING_FILE;
}
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);
+ ret = blk_pread(blk,
+ (sector_num - s->src_cur_offset) << BDRV_SECTOR_BITS,
+ buf, n << BDRV_SECTOR_BITS);
if (ret < 0) {
return ret;
}
break;
}
- ret = blk_write_compressed(s->target, sector_num, buf, n);
+ ret = blk_pwrite_compressed(s->target,
+ sector_num << BDRV_SECTOR_BITS,
+ buf, n << BDRV_SECTOR_BITS);
if (ret < 0) {
return ret;
}
if (!s->min_sparse ||
is_allocated_sectors_min(buf, n, &n, s->min_sparse))
{
- ret = blk_write(s->target, sector_num, buf, n);
+ ret = blk_pwrite(s->target, sector_num << BDRV_SECTOR_BITS,
+ buf, n << BDRV_SECTOR_BITS, 0);
if (ret < 0) {
return ret;
}
if (s->has_zero_init) {
break;
}
- ret = blk_write_zeroes(s->target, sector_num, n, 0);
+ ret = blk_pwrite_zeroes(s->target, sector_num << BDRV_SECTOR_BITS,
+ n << BDRV_SECTOR_BITS, 0);
if (ret < 0) {
return ret;
}
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);
+ ret = blk_make_zero(s->target, BDRV_REQ_MAY_UNMAP);
if (ret == 0) {
s->has_zero_init = true;
}
if (s->compressed) {
/* signal EOF to align */
- ret = blk_write_compressed(s->target, 0, NULL, 0);
+ ret = blk_pwrite_compressed(s->target, 0, NULL, 0);
if (ret < 0) {
goto fail;
}
const char *preallocation =
qemu_opt_get(opts, BLOCK_OPT_PREALLOC);
- if (!drv->bdrv_write_compressed) {
+ if (!drv->bdrv_co_pwritev_compressed) {
error_report("Compression not supported for this file format");
ret = -1;
goto out;
}
out_bs = blk_bs(out_blk);
- /* increase bufsectors from the default 4096 (2M) if opt_transfer_length
+ /* increase bufsectors from the default 4096 (2M) if opt_transfer
* 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))
- );
+ MAX(bufsectors,
+ MAX(out_bs->bl.opt_transfer >> BDRV_SECTOR_BITS,
+ out_bs->bl.pdiscard_alignment >>
+ BDRV_SECTOR_BITS)));
if (skip_create) {
int64_t output_sectors = blk_nb_sectors(out_blk);
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);
+ Visitor *v = qobject_output_visitor_new(&obj);
+
+ visit_type_ImageInfoList(v, NULL, &list, &error_abort);
+ visit_complete(v, &obj);
str = qobject_to_json_pretty(obj);
assert(str != NULL);
printf("%s\n", qstring_get_str(str));
qobject_decref(obj);
- qmp_output_visitor_cleanup(ov);
+ visit_free(v);
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);
+ Visitor *v = qobject_output_visitor_new(&obj);
+
+ visit_type_ImageInfo(v, NULL, &info, &error_abort);
+ visit_complete(v, &obj);
str = qobject_to_json_pretty(obj);
assert(str != NULL);
printf("%s\n", qstring_get_str(str));
qobject_decref(obj);
- qmp_output_visitor_cleanup(ov);
+ visit_free(v);
QDECREF(str);
}
error_reportf_err(local_err,
"Could not open old backing file '%s': ",
backing_name);
+ ret = -1;
goto out;
}
error_reportf_err(local_err,
"Could not open new backing file '%s': ",
out_baseimg);
+ ret = -1;
goto out;
}
}
n = old_backing_num_sectors - sector;
}
- ret = blk_read(blk_old_backing, sector, buf_old, n);
+ ret = blk_pread(blk_old_backing, sector << BDRV_SECTOR_BITS,
+ buf_old, n << BDRV_SECTOR_BITS);
if (ret < 0) {
error_report("error while reading from old backing file");
goto out;
n = new_backing_num_sectors - sector;
}
- ret = blk_read(blk_new_backing, sector, buf_new, n);
+ ret = blk_pread(blk_new_backing, sector << BDRV_SECTOR_BITS,
+ buf_new, n << BDRV_SECTOR_BITS);
if (ret < 0) {
error_report("error while reading from new backing file");
goto out;
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);
+ ret = blk_pwrite(blk,
+ (sector + written) << BDRV_SECTOR_BITS,
+ buf_old + written * 512,
+ pnum << BDRV_SECTOR_BITS, 0);
if (ret < 0) {
error_report("Error while writing to COW image: %s",
strerror(-ret));
error_report("Image is read-only");
break;
default:
- error_report("Error resizing image (%d)", -ret);
+ error_report("Error resizing image: %s", strerror(-ret));
break;
}
out:
return 0;
}
+typedef struct BenchData {
+ BlockBackend *blk;
+ uint64_t image_size;
+ bool write;
+ int bufsize;
+ int step;
+ int nrreq;
+ int n;
+ int flush_interval;
+ bool drain_on_flush;
+ uint8_t *buf;
+ QEMUIOVector *qiov;
+
+ int in_flight;
+ bool in_flush;
+ uint64_t offset;
+} BenchData;
+
+static void bench_undrained_flush_cb(void *opaque, int ret)
+{
+ if (ret < 0) {
+ error_report("Failed flush request: %s", strerror(-ret));
+ exit(EXIT_FAILURE);
+ }
+}
+
+static void bench_cb(void *opaque, int ret)
+{
+ BenchData *b = opaque;
+ BlockAIOCB *acb;
+
+ if (ret < 0) {
+ error_report("Failed request: %s", strerror(-ret));
+ exit(EXIT_FAILURE);
+ }
+
+ if (b->in_flush) {
+ /* Just finished a flush with drained queue: Start next requests */
+ assert(b->in_flight == 0);
+ b->in_flush = false;
+ } else if (b->in_flight > 0) {
+ int remaining = b->n - b->in_flight;
+
+ b->n--;
+ b->in_flight--;
+
+ /* Time for flush? Drain queue if requested, then flush */
+ if (b->flush_interval && remaining % b->flush_interval == 0) {
+ if (!b->in_flight || !b->drain_on_flush) {
+ BlockCompletionFunc *cb;
+
+ if (b->drain_on_flush) {
+ b->in_flush = true;
+ cb = bench_cb;
+ } else {
+ cb = bench_undrained_flush_cb;
+ }
+
+ acb = blk_aio_flush(b->blk, cb, b);
+ if (!acb) {
+ error_report("Failed to issue flush request");
+ exit(EXIT_FAILURE);
+ }
+ }
+ if (b->drain_on_flush) {
+ return;
+ }
+ }
+ }
+
+ while (b->n > b->in_flight && b->in_flight < b->nrreq) {
+ if (b->write) {
+ acb = blk_aio_pwritev(b->blk, b->offset, b->qiov, 0,
+ bench_cb, b);
+ } else {
+ acb = blk_aio_preadv(b->blk, b->offset, b->qiov, 0,
+ bench_cb, b);
+ }
+ if (!acb) {
+ error_report("Failed to issue request");
+ exit(EXIT_FAILURE);
+ }
+ b->in_flight++;
+ b->offset += b->step;
+ b->offset %= b->image_size;
+ }
+}
+
+static int img_bench(int argc, char **argv)
+{
+ int c, ret = 0;
+ const char *fmt = NULL, *filename;
+ bool quiet = false;
+ bool image_opts = false;
+ bool is_write = false;
+ int count = 75000;
+ int depth = 64;
+ int64_t offset = 0;
+ size_t bufsize = 4096;
+ int pattern = 0;
+ size_t step = 0;
+ int flush_interval = 0;
+ bool drain_on_flush = true;
+ int64_t image_size;
+ BlockBackend *blk = NULL;
+ BenchData data = {};
+ int flags = 0;
+ bool writethrough = false;
+ struct timeval t1, t2;
+ int i;
+
+ for (;;) {
+ static const struct option long_options[] = {
+ {"help", no_argument, 0, 'h'},
+ {"flush-interval", required_argument, 0, OPTION_FLUSH_INTERVAL},
+ {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS},
+ {"pattern", required_argument, 0, OPTION_PATTERN},
+ {"no-drain", no_argument, 0, OPTION_NO_DRAIN},
+ {0, 0, 0, 0}
+ };
+ c = getopt_long(argc, argv, "hc:d:f:no:qs:S:t:w", long_options, NULL);
+ if (c == -1) {
+ break;
+ }
+
+ switch (c) {
+ case 'h':
+ case '?':
+ help();
+ break;
+ case 'c':
+ {
+ char *end;
+ errno = 0;
+ count = strtoul(optarg, &end, 0);
+ if (errno || *end || count > INT_MAX) {
+ error_report("Invalid request count specified");
+ return 1;
+ }
+ break;
+ }
+ case 'd':
+ {
+ char *end;
+ errno = 0;
+ depth = strtoul(optarg, &end, 0);
+ if (errno || *end || depth > INT_MAX) {
+ error_report("Invalid queue depth specified");
+ return 1;
+ }
+ break;
+ }
+ case 'f':
+ fmt = optarg;
+ break;
+ case 'n':
+ flags |= BDRV_O_NATIVE_AIO;
+ break;
+ case 'o':
+ {
+ char *end;
+ errno = 0;
+ offset = qemu_strtosz_suffix(optarg, &end,
+ QEMU_STRTOSZ_DEFSUFFIX_B);
+ if (offset < 0|| *end) {
+ error_report("Invalid offset specified");
+ return 1;
+ }
+ break;
+ }
+ break;
+ case 'q':
+ quiet = true;
+ break;
+ case 's':
+ {
+ int64_t sval;
+ char *end;
+
+ sval = qemu_strtosz_suffix(optarg, &end, QEMU_STRTOSZ_DEFSUFFIX_B);
+ if (sval < 0 || sval > INT_MAX || *end) {
+ error_report("Invalid buffer size specified");
+ return 1;
+ }
+
+ bufsize = sval;
+ break;
+ }
+ case 'S':
+ {
+ int64_t sval;
+ char *end;
+
+ sval = qemu_strtosz_suffix(optarg, &end, QEMU_STRTOSZ_DEFSUFFIX_B);
+ if (sval < 0 || sval > INT_MAX || *end) {
+ error_report("Invalid step size specified");
+ return 1;
+ }
+
+ step = sval;
+ break;
+ }
+ case 't':
+ ret = bdrv_parse_cache_mode(optarg, &flags, &writethrough);
+ if (ret < 0) {
+ error_report("Invalid cache mode");
+ ret = -1;
+ goto out;
+ }
+ break;
+ case 'w':
+ flags |= BDRV_O_RDWR;
+ is_write = true;
+ break;
+ case OPTION_PATTERN:
+ {
+ char *end;
+ errno = 0;
+ pattern = strtoul(optarg, &end, 0);
+ if (errno || *end || pattern > 0xff) {
+ error_report("Invalid pattern byte specified");
+ return 1;
+ }
+ break;
+ }
+ case OPTION_FLUSH_INTERVAL:
+ {
+ char *end;
+ errno = 0;
+ flush_interval = strtoul(optarg, &end, 0);
+ if (errno || *end || flush_interval > INT_MAX) {
+ error_report("Invalid flush interval specified");
+ return 1;
+ }
+ break;
+ }
+ case OPTION_NO_DRAIN:
+ drain_on_flush = false;
+ break;
+ case OPTION_IMAGE_OPTS:
+ image_opts = true;
+ break;
+ }
+ }
+
+ if (optind != argc - 1) {
+ error_exit("Expecting one image file name");
+ }
+ filename = argv[argc - 1];
+
+ if (!is_write && flush_interval) {
+ error_report("--flush-interval is only available in write tests");
+ ret = -1;
+ goto out;
+ }
+ if (flush_interval && flush_interval < depth) {
+ error_report("Flush interval can't be smaller than depth");
+ ret = -1;
+ goto out;
+ }
+
+ blk = img_open(image_opts, filename, fmt, flags, writethrough, quiet);
+ if (!blk) {
+ ret = -1;
+ goto out;
+ }
+
+ image_size = blk_getlength(blk);
+ if (image_size < 0) {
+ ret = image_size;
+ goto out;
+ }
+
+ data = (BenchData) {
+ .blk = blk,
+ .image_size = image_size,
+ .bufsize = bufsize,
+ .step = step ?: bufsize,
+ .nrreq = depth,
+ .n = count,
+ .offset = offset,
+ .write = is_write,
+ .flush_interval = flush_interval,
+ .drain_on_flush = drain_on_flush,
+ };
+ printf("Sending %d %s requests, %d bytes each, %d in parallel "
+ "(starting at offset %" PRId64 ", step size %d)\n",
+ data.n, data.write ? "write" : "read", data.bufsize, data.nrreq,
+ data.offset, data.step);
+ if (flush_interval) {
+ printf("Sending flush every %d requests\n", flush_interval);
+ }
+
+ data.buf = blk_blockalign(blk, data.nrreq * data.bufsize);
+ memset(data.buf, pattern, data.nrreq * data.bufsize);
+
+ data.qiov = g_new(QEMUIOVector, data.nrreq);
+ for (i = 0; i < data.nrreq; i++) {
+ qemu_iovec_init(&data.qiov[i], 1);
+ qemu_iovec_add(&data.qiov[i],
+ data.buf + i * data.bufsize, data.bufsize);
+ }
+
+ gettimeofday(&t1, NULL);
+ bench_cb(&data, 0);
+
+ while (data.n > 0) {
+ main_loop_wait(false);
+ }
+ gettimeofday(&t2, NULL);
+
+ printf("Run completed in %3.3f seconds.\n",
+ (t2.tv_sec - t1.tv_sec)
+ + ((double)(t2.tv_usec - t1.tv_usec) / 1000000));
+
+out:
+ qemu_vfree(data.buf);
+ blk_unref(blk);
+
+ if (ret) {
+ return 1;
+ }
+ return 0;
+}
+
+#define C_BS 01
+#define C_COUNT 02
+#define C_IF 04
+#define C_OF 010
+#define C_SKIP 020
+
+struct DdInfo {
+ unsigned int flags;
+ int64_t count;
+};
+
+struct DdIo {
+ int bsz; /* Block size */
+ char *filename;
+ uint8_t *buf;
+ int64_t offset;
+};
+
+struct DdOpts {
+ const char *name;
+ int (*f)(const char *, struct DdIo *, struct DdIo *, struct DdInfo *);
+ unsigned int flag;
+};
+
+static int img_dd_bs(const char *arg,
+ struct DdIo *in, struct DdIo *out,
+ struct DdInfo *dd)
+{
+ char *end;
+ int64_t res;
+
+ res = qemu_strtosz_suffix(arg, &end, QEMU_STRTOSZ_DEFSUFFIX_B);
+
+ if (res <= 0 || res > INT_MAX || *end) {
+ error_report("invalid number: '%s'", arg);
+ return 1;
+ }
+ in->bsz = out->bsz = res;
+
+ return 0;
+}
+
+static int img_dd_count(const char *arg,
+ struct DdIo *in, struct DdIo *out,
+ struct DdInfo *dd)
+{
+ char *end;
+
+ dd->count = qemu_strtosz_suffix(arg, &end, QEMU_STRTOSZ_DEFSUFFIX_B);
+
+ if (dd->count < 0 || *end) {
+ error_report("invalid number: '%s'", arg);
+ return 1;
+ }
+
+ return 0;
+}
+
+static int img_dd_if(const char *arg,
+ struct DdIo *in, struct DdIo *out,
+ struct DdInfo *dd)
+{
+ in->filename = g_strdup(arg);
+
+ return 0;
+}
+
+static int img_dd_of(const char *arg,
+ struct DdIo *in, struct DdIo *out,
+ struct DdInfo *dd)
+{
+ out->filename = g_strdup(arg);
+
+ return 0;
+}
+
+static int img_dd_skip(const char *arg,
+ struct DdIo *in, struct DdIo *out,
+ struct DdInfo *dd)
+{
+ char *end;
+
+ in->offset = qemu_strtosz_suffix(arg, &end, QEMU_STRTOSZ_DEFSUFFIX_B);
+
+ if (in->offset < 0 || *end) {
+ error_report("invalid number: '%s'", arg);
+ return 1;
+ }
+
+ return 0;
+}
+
+static int img_dd(int argc, char **argv)
+{
+ int ret = 0;
+ char *arg = NULL;
+ char *tmp;
+ BlockDriver *drv = NULL, *proto_drv = NULL;
+ BlockBackend *blk1 = NULL, *blk2 = NULL;
+ QemuOpts *opts = NULL;
+ QemuOptsList *create_opts = NULL;
+ Error *local_err = NULL;
+ bool image_opts = false;
+ int c, i;
+ const char *out_fmt = "raw";
+ const char *fmt = NULL;
+ int64_t size = 0;
+ int64_t block_count = 0, out_pos, in_pos;
+ struct DdInfo dd = {
+ .flags = 0,
+ .count = 0,
+ };
+ struct DdIo in = {
+ .bsz = 512, /* Block size is by default 512 bytes */
+ .filename = NULL,
+ .buf = NULL,
+ .offset = 0
+ };
+ struct DdIo out = {
+ .bsz = 512,
+ .filename = NULL,
+ .buf = NULL,
+ .offset = 0
+ };
+
+ const struct DdOpts options[] = {
+ { "bs", img_dd_bs, C_BS },
+ { "count", img_dd_count, C_COUNT },
+ { "if", img_dd_if, C_IF },
+ { "of", img_dd_of, C_OF },
+ { "skip", img_dd_skip, C_SKIP },
+ { NULL, NULL, 0 }
+ };
+ const struct option long_options[] = {
+ { "help", no_argument, 0, 'h'},
+ { "image-opts", no_argument, 0, OPTION_IMAGE_OPTS},
+ { 0, 0, 0, 0 }
+ };
+
+ while ((c = getopt_long(argc, argv, "hf:O:", long_options, NULL))) {
+ if (c == EOF) {
+ break;
+ }
+ switch (c) {
+ case 'O':
+ out_fmt = optarg;
+ break;
+ case 'f':
+ fmt = optarg;
+ break;
+ case '?':
+ error_report("Try 'qemu-img --help' for more information.");
+ ret = -1;
+ goto out;
+ case 'h':
+ help();
+ break;
+ case OPTION_IMAGE_OPTS:
+ image_opts = true;
+ break;
+ }
+ }
+
+ for (i = optind; i < argc; i++) {
+ int j;
+ arg = g_strdup(argv[i]);
+
+ tmp = strchr(arg, '=');
+ if (tmp == NULL) {
+ error_report("unrecognized operand %s", arg);
+ ret = -1;
+ goto out;
+ }
+
+ *tmp++ = '\0';
+
+ for (j = 0; options[j].name != NULL; j++) {
+ if (!strcmp(arg, options[j].name)) {
+ break;
+ }
+ }
+ if (options[j].name == NULL) {
+ error_report("unrecognized operand %s", arg);
+ ret = -1;
+ goto out;
+ }
+
+ if (options[j].f(tmp, &in, &out, &dd) != 0) {
+ ret = -1;
+ goto out;
+ }
+ dd.flags |= options[j].flag;
+ g_free(arg);
+ arg = NULL;
+ }
+
+ if (!(dd.flags & C_IF && dd.flags & C_OF)) {
+ error_report("Must specify both input and output files");
+ ret = -1;
+ goto out;
+ }
+ blk1 = img_open(image_opts, in.filename, fmt, 0, false, false);
+
+ if (!blk1) {
+ ret = -1;
+ goto out;
+ }
+
+ drv = bdrv_find_format(out_fmt);
+ if (!drv) {
+ error_report("Unknown file format");
+ 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 (!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);
+
+ size = blk_getlength(blk1);
+ if (size < 0) {
+ error_report("Failed to get size for '%s'", in.filename);
+ ret = -1;
+ goto out;
+ }
+
+ if (dd.flags & C_COUNT && dd.count <= INT64_MAX / in.bsz &&
+ dd.count * in.bsz < size) {
+ size = dd.count * in.bsz;
+ }
+
+ /* Overflow means the specified offset is beyond input image's size */
+ if (dd.flags & C_SKIP && (in.offset > INT64_MAX / in.bsz ||
+ size < in.bsz * in.offset)) {
+ qemu_opt_set_number(opts, BLOCK_OPT_SIZE, 0, &error_abort);
+ } else {
+ qemu_opt_set_number(opts, BLOCK_OPT_SIZE,
+ size - in.bsz * in.offset, &error_abort);
+ }
+
+ ret = bdrv_create(drv, out.filename, opts, &local_err);
+ if (ret < 0) {
+ error_reportf_err(local_err,
+ "%s: error while creating output image: ",
+ out.filename);
+ ret = -1;
+ goto out;
+ }
+
+ blk2 = img_open(image_opts, out.filename, out_fmt, BDRV_O_RDWR,
+ false, false);
+
+ if (!blk2) {
+ ret = -1;
+ goto out;
+ }
+
+ if (dd.flags & C_SKIP && (in.offset > INT64_MAX / in.bsz ||
+ size < in.offset * in.bsz)) {
+ /* We give a warning if the skip option is bigger than the input
+ * size and create an empty output disk image (i.e. like dd(1)).
+ */
+ error_report("%s: cannot skip to specified offset", in.filename);
+ in_pos = size;
+ } else {
+ in_pos = in.offset * in.bsz;
+ }
+
+ in.buf = g_new(uint8_t, in.bsz);
+
+ for (out_pos = 0; in_pos < size; block_count++) {
+ int in_ret, out_ret;
+
+ if (in_pos + in.bsz > size) {
+ in_ret = blk_pread(blk1, in_pos, in.buf, size - in_pos);
+ } else {
+ in_ret = blk_pread(blk1, in_pos, in.buf, in.bsz);
+ }
+ if (in_ret < 0) {
+ error_report("error while reading from input image file: %s",
+ strerror(-in_ret));
+ ret = -1;
+ goto out;
+ }
+ in_pos += in_ret;
+
+ out_ret = blk_pwrite(blk2, out_pos, in.buf, in_ret, 0);
+
+ if (out_ret < 0) {
+ error_report("error while writing to output image file: %s",
+ strerror(-out_ret));
+ ret = -1;
+ goto out;
+ }
+ out_pos += out_ret;
+ }
+
+out:
+ g_free(arg);
+ qemu_opts_del(opts);
+ qemu_opts_free(create_opts);
+ blk_unref(blk1);
+ blk_unref(blk2);
+ g_free(in.filename);
+ g_free(out.filename);
+ g_free(in.buf);
+ g_free(out.buf);
+
+ if (ret) {
+ return 1;
+ }
+ return 0;
+}
+
+
static const img_cmd_t img_cmds[] = {
#define DEF(option, callback, arg_string) \
{ option, callback },
const img_cmd_t *cmd;
const char *cmdname;
Error *local_error = NULL;
+ char *trace_file = NULL;
int c;
static const struct option long_options[] = {
{"help", no_argument, 0, 'h'},
- {"version", no_argument, 0, 'v'},
+ {"version", no_argument, 0, 'V'},
+ {"trace", required_argument, NULL, 'T'},
{0, 0, 0, 0}
};
signal(SIGPIPE, SIG_IGN);
#endif
+ module_call_init(MODULE_INIT_TRACE);
error_set_progname(argv[0]);
qemu_init_exec_dir(argv[0]);
exit(EXIT_FAILURE);
}
- if (qcrypto_init(&local_error) < 0) {
- error_reportf_err(local_error, "cannot initialize crypto: ");
- exit(1);
- }
+ qcrypto_init(&error_fatal);
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);
+ qemu_add_opts(&qemu_trace_opts);
- /* find the command */
- for (cmd = img_cmds; cmd->name != NULL; cmd++) {
- if (!strcmp(cmdname, cmd->name)) {
- return cmd->handler(argc - 1, argv + 1);
+ while ((c = getopt_long(argc, argv, "+hVT:", long_options, NULL)) != -1) {
+ switch (c) {
+ case 'h':
+ help();
+ return 0;
+ case 'V':
+ printf(QEMU_IMG_VERSION);
+ return 0;
+ case 'T':
+ g_free(trace_file);
+ trace_file = trace_opt_parse(optarg);
+ break;
}
}
- c = getopt_long(argc, argv, "h", long_options, NULL);
+ cmdname = argv[optind];
- if (c == 'h') {
- help();
- }
- if (c == 'v') {
- printf(QEMU_IMG_VERSION);
+ /* reset getopt_long scanning */
+ argc -= optind;
+ if (argc < 1) {
return 0;
}
+ argv += optind;
+ optind = 0;
+
+ if (!trace_init_backends()) {
+ exit(1);
+ }
+ trace_init_file(trace_file);
+ qemu_set_log(LOG_TRACE);
+
+ /* find the command */
+ for (cmd = img_cmds; cmd->name != NULL; cmd++) {
+ if (!strcmp(cmdname, cmd->name)) {
+ return cmd->handler(argc, argv);
+ }
+ }
/* not found */
error_exit("Command not found: %s", cmdname);
projects / qemu.git / blobdiff