#include "qemu/option.h"
#include "qemu/error-report.h"
#include "qemu/log.h"
+#include "qemu/units.h"
#include "qom/object_interfaces.h"
#include "sysemu/sysemu.h"
#include "sysemu/block-backend.h"
{
va_list ap;
- error_printf("qemu-img: ");
-
va_start(ap, fmt);
- error_vprintf(fmt, ap);
+ error_vreport(fmt, ap);
va_end(ap);
- error_printf("\nTry 'qemu-img --help' for more information\n");
+ error_printf("Try 'qemu-img --help' for more information\n");
exit(EXIT_FAILURE);
}
" '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);
+ bdrv_iterate_format(format_print, NULL, false);
printf("\n\n" QEMU_HELP_BOTTOM "\n");
exit(EXIT_SUCCESS);
}
if (!proto_drv->create_opts) {
error_report("Protocol driver '%s' does not support image creation",
proto_drv->format_name);
+ qemu_opts_free(create_opts);
return 1;
}
create_opts = qemu_opts_append(create_opts, proto_drv->create_opts);
}
- printf("Supported options:\n");
+ if (filename) {
+ printf("Supported options:\n");
+ } else {
+ printf("Supported %s options:\n", fmt);
+ }
qemu_opts_print_help(create_opts, false);
qemu_opts_free(create_opts);
+
+ if (!filename) {
+ printf("\n"
+ "The protocol level may support further options.\n"
+ "Specify the target filename to include those options.\n");
+ }
+
return 0;
}
if (qemu_opts_foreach(&qemu_object_opts,
user_creatable_add_opts_foreach,
- NULL, NULL)) {
+ NULL, &error_fatal)) {
goto fail;
}
if (qemu_opts_foreach(&qemu_object_opts,
user_creatable_add_opts_foreach,
- NULL, NULL)) {
+ NULL, &error_fatal)) {
return 1;
}
if (qemu_opts_foreach(&qemu_object_opts,
user_creatable_add_opts_foreach,
- NULL, NULL)) {
+ NULL, &error_fatal)) {
return 1;
}
return res;
}
-#define IO_BUF_SIZE (2 * 1024 * 1024)
+#define IO_BUF_SIZE (2 * MiB)
/*
* Check if passed sectors are empty (not allocated or contain only 0 bytes)
if (qemu_opts_foreach(&qemu_object_opts,
user_creatable_add_opts_foreach,
- NULL, NULL)) {
+ NULL, &error_fatal)) {
ret = 2;
goto out4;
}
count, &count, NULL, NULL);
}
if (ret < 0) {
+ error_report("error while reading block status of sector %" PRId64
+ ": %s", sector_num, strerror(-ret));
return ret;
}
n = DIV_ROUND_UP(count, BDRV_SECTOR_SIZE);
int nb_sectors, uint8_t *buf)
{
int n, ret;
- QEMUIOVector qiov;
- struct iovec iov;
assert(nb_sectors <= s->buf_sectors);
while (nb_sectors > 0) {
bs_sectors = s->src_sectors[src_cur];
n = MIN(nb_sectors, bs_sectors - (sector_num - src_cur_offset));
- iov.iov_base = buf;
- iov.iov_len = n << BDRV_SECTOR_BITS;
- qemu_iovec_init_external(&qiov, &iov, 1);
- ret = blk_co_preadv(
+ ret = blk_co_pread(
blk, (sector_num - src_cur_offset) << BDRV_SECTOR_BITS,
- n << BDRV_SECTOR_BITS, &qiov, 0);
+ n << BDRV_SECTOR_BITS, buf, 0);
if (ret < 0) {
return ret;
}
enum ImgConvertBlockStatus status)
{
int ret;
- QEMUIOVector qiov;
- struct iovec iov;
while (nb_sectors > 0) {
int n = nb_sectors;
(s->compressed &&
!buffer_is_zero(buf, n * BDRV_SECTOR_SIZE)))
{
- iov.iov_base = buf;
- iov.iov_len = n << BDRV_SECTOR_BITS;
- qemu_iovec_init_external(&qiov, &iov, 1);
-
- ret = blk_co_pwritev(s->target, sector_num << BDRV_SECTOR_BITS,
- n << BDRV_SECTOR_BITS, &qiov, flags);
+ ret = blk_co_pwrite(s->target, sector_num << BDRV_SECTOR_BITS,
+ n << BDRV_SECTOR_BITS, buf, flags);
if (ret < 0) {
return ret;
}
}
ret = blk_co_pwrite_zeroes(s->target,
sector_num << BDRV_SECTOR_BITS,
- n << BDRV_SECTOR_BITS, 0);
+ n << BDRV_SECTOR_BITS,
+ BDRV_REQ_MAY_UNMAP);
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 = blk_make_zero(s->target, BDRV_REQ_MAY_UNMAP);
+ ret = blk_make_zero(s->target, BDRV_REQ_MAY_UNMAP | BDRV_REQ_NO_FALLBACK);
if (ret == 0) {
s->has_zero_init = true;
}
if (qemu_opts_foreach(&qemu_object_opts,
user_creatable_add_opts_foreach,
- NULL, NULL)) {
+ NULL, &error_fatal)) {
goto fail_getopt;
}
if (nb_sns <= 0)
return;
printf("Snapshot list:\n");
- bdrv_snapshot_dump(fprintf, stdout, NULL);
+ bdrv_snapshot_dump(NULL);
printf("\n");
for(i = 0; i < nb_sns; i++) {
sn = &sn_tab[i];
- bdrv_snapshot_dump(fprintf, stdout, sn);
+ bdrv_snapshot_dump(sn);
printf("\n");
}
g_free(sn_tab);
}
delim = true;
- bdrv_image_info_dump(fprintf, stdout, elem->value);
+ bdrv_image_info_dump(elem->value);
}
}
if (qemu_opts_foreach(&qemu_object_opts,
user_creatable_add_opts_foreach,
- NULL, NULL)) {
+ NULL, &error_fatal)) {
return 1;
}
return 0;
}
-static void dump_map_entry(OutputFormat output_format, MapEntry *e,
- MapEntry *next)
+static int 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);
+ return -1;
}
if (e->data && !e->zero) {
printf("%#-16"PRIx64"%#-16"PRIx64"%#-16"PRIx64"%s\n",
}
break;
}
+ return 0;
}
static int get_block_status(BlockDriverState *bs, int64_t offset,
BlockDriverState *file;
bool has_offset;
int64_t map;
+ char *filename = NULL;
/* As an optimization, we could cache the current range of unallocated
* clusters in each file of the chain, and avoid querying the same
has_offset = !!(ret & BDRV_BLOCK_OFFSET_VALID);
+ if (file && has_offset) {
+ bdrv_refresh_filename(file);
+ filename = file->filename;
+ }
+
*e = (MapEntry) {
.start = offset,
.length = bytes,
.offset = map,
.has_offset = has_offset,
.depth = depth,
- .has_filename = file && has_offset,
- .filename = file && has_offset ? file->filename : NULL,
+ .has_filename = filename,
+ .filename = filename,
};
return 0;
if (qemu_opts_foreach(&qemu_object_opts,
user_creatable_add_opts_foreach,
- NULL, NULL)) {
+ NULL, &error_fatal)) {
return 1;
}
int64_t n;
/* Probe up to 1 GiB at a time. */
- n = MIN(1 << 30, length - offset);
+ n = MIN(1 * GiB, length - offset);
ret = get_block_status(bs, offset, n, &next);
if (ret < 0) {
}
if (curr.length > 0) {
- dump_map_entry(output_format, &curr, &next);
+ ret = dump_map_entry(output_format, &curr, &next);
+ if (ret < 0) {
+ goto out;
+ }
}
curr = next;
}
- dump_map_entry(output_format, &curr, NULL);
+ ret = dump_map_entry(output_format, &curr, NULL);
out:
blk_unref(blk);
if (qemu_opts_foreach(&qemu_object_opts,
user_creatable_add_opts_foreach,
- NULL, NULL)) {
+ NULL, &error_fatal)) {
return 1;
}
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 = bdrv_snapshot_find(bs, &sn, snapshot_name);
+ if (ret < 0) {
+ error_report("Could not delete snapshot '%s': snapshot not "
+ "found", snapshot_name);
ret = 1;
+ } else {
+ ret = bdrv_snapshot_delete(bs, sn.id_str, sn.name, &err);
+ if (ret < 0) {
+ error_reportf_err(err, "Could not delete snapshot '%s': ",
+ snapshot_name);
+ ret = 1;
+ }
}
break;
}
if (qemu_opts_foreach(&qemu_object_opts,
user_creatable_add_opts_foreach,
- NULL, NULL)) {
+ NULL, &error_fatal)) {
return 1;
}
char backing_name[PATH_MAX];
QDict *options = NULL;
- if (bs->backing_format[0] != '\0') {
- options = qdict_new();
- qdict_put_str(options, "driver", bs->backing_format);
- }
-
- if (force_share) {
- if (!options) {
+ if (bs->backing) {
+ if (bs->backing_format[0] != '\0') {
options = qdict_new();
+ qdict_put_str(options, "driver", bs->backing_format);
}
- qdict_put_bool(options, BDRV_OPT_FORCE_SHARE, true);
- }
- 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);
- ret = -1;
- goto out;
+
+ if (force_share) {
+ if (!options) {
+ options = qdict_new();
+ }
+ qdict_put_bool(options, BDRV_OPT_FORCE_SHARE, true);
+ }
+ 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);
+ ret = -1;
+ goto out;
+ }
+ } else {
+ blk_old_backing = NULL;
}
if (out_baseimg[0]) {
qdict_put_bool(options, BDRV_OPT_FORCE_SHARE, true);
}
+ bdrv_refresh_filename(bs);
overlay_filename = bs->exact_filename[0] ? bs->exact_filename
: bs->filename;
- out_real_path = g_malloc(PATH_MAX);
-
- bdrv_get_full_backing_filename_from_filename(overlay_filename,
- out_baseimg,
- out_real_path,
- PATH_MAX,
- &local_err);
+ out_real_path =
+ bdrv_get_full_backing_filename_from_filename(overlay_filename,
+ out_baseimg,
+ &local_err);
if (local_err) {
error_reportf_err(local_err,
"Could not resolve backing filename: ");
ret = -1;
- g_free(out_real_path);
goto out;
}
*/
if (!unsafe) {
int64_t size;
- int64_t old_backing_size;
+ int64_t old_backing_size = 0;
int64_t new_backing_size = 0;
uint64_t offset;
int64_t n;
ret = -1;
goto out;
}
- old_backing_size = blk_getlength(blk_old_backing);
- if (old_backing_size < 0) {
- char backing_name[PATH_MAX];
+ if (blk_old_backing) {
+ old_backing_size = blk_getlength(blk_old_backing);
+ if (old_backing_size < 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_size));
- ret = -1;
- goto out;
+ bdrv_get_backing_filename(bs, backing_name,
+ sizeof(backing_name));
+ error_report("Could not get size of '%s': %s",
+ backing_name, strerror(-old_backing_size));
+ ret = -1;
+ goto out;
+ }
}
if (blk_new_backing) {
new_backing_size = blk_getlength(blk_new_backing);
}
for (offset = 0; offset < size; offset += n) {
+ bool buf_old_is_zero = false;
+
/* How many bytes can we handle with the next read? */
n = MIN(IO_BUF_SIZE, size - offset);
*/
if (offset >= old_backing_size) {
memset(buf_old, 0, n);
+ buf_old_is_zero = true;
} else {
if (offset + n > old_backing_size) {
n = old_backing_size - offset;
if (compare_buffers(buf_old + written, buf_new + written,
n - written, &pnum))
{
- ret = blk_pwrite(blk, offset + written,
- buf_old + written, pnum, 0);
+ if (buf_old_is_zero) {
+ ret = blk_pwrite_zeroes(blk, offset + written, pnum, 0);
+ } else {
+ ret = blk_pwrite(blk, offset + written,
+ buf_old + written, pnum, 0);
+ }
if (ret < 0) {
error_report("Error while writing to COW image: %s",
strerror(-ret));
if (qemu_opts_foreach(&qemu_object_opts,
user_creatable_add_opts_foreach,
- NULL, NULL)) {
+ NULL, &error_fatal)) {
return 1;
}
if (qemu_opts_foreach(&qemu_object_opts,
user_creatable_add_opts_foreach,
- NULL, NULL)) {
+ NULL, &error_fatal)) {
ret = -1;
goto out_no_progress;
}
if (qemu_opts_foreach(&qemu_object_opts,
user_creatable_add_opts_foreach,
- NULL, NULL)) {
+ NULL, &error_fatal)) {
ret = -1;
goto out;
}
if (qemu_opts_foreach(&qemu_object_opts,
user_creatable_add_opts_foreach,
- NULL, NULL)) {
+ NULL, &error_fatal)) {
goto out;
}
signal(SIGPIPE, SIG_IGN);
#endif
+ error_init(argv[0]);
module_call_init(MODULE_INIT_TRACE);
- error_set_progname(argv[0]);
qemu_init_exec_dir(argv[0]);
if (qemu_init_main_loop(&local_error)) {
return 0;
}
argv += optind;
- optind = 0;
+ qemu_reset_optind();
if (!trace_init_backends()) {
exit(1);
projects / qemu.git / blobdiff