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block: Error parameter for open functions 

Add an Error ** parameter to bdrv_open, bdrv_file_open and associated
functions to allow more specific error messages.

Signed-off-by: Max Reitz <mreitz@redhat.com>
This commit is contained in:
Max Reitz 2013-09-05 14:45:29 +02:00 committed by Kevin Wolf
parent d5124c00d8
commit 34b5d2c68e
17 changed files with 163 additions and 85 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

100
block.c
View File

@ -552,7 +552,7 @@ BlockDriver *bdrv_find_protocol(const char *filename,
}
static int find_image_format(BlockDriverState *bs, const char *filename,
BlockDriver **pdrv)
BlockDriver **pdrv, Error **errp)
{
int score, score_max;
BlockDriver *drv1, *drv;
@ -563,6 +563,7 @@ static int find_image_format(BlockDriverState *bs, const char *filename,
if (bs->sg || !bdrv_is_inserted(bs) || bdrv_getlength(bs) == 0) {
drv = bdrv_find_format("raw");
if (!drv) {
error_setg(errp, "Could not find raw image format");
ret = -ENOENT;
}
*pdrv = drv;
@ -571,6 +572,8 @@ static int find_image_format(BlockDriverState *bs, const char *filename,
ret = bdrv_pread(bs, 0, buf, sizeof(buf));
if (ret < 0) {
error_setg_errno(errp, -ret, "Could not read image for determining its "
"format");
*pdrv = NULL;
return ret;
}
@ -587,6 +590,8 @@ static int find_image_format(BlockDriverState *bs, const char *filename,
}
}
if (!drv) {
error_setg(errp, "Could not determine image format: No compatible "
"driver found");
ret = -ENOENT;
}
*pdrv = drv;
@ -706,10 +711,11 @@ static int bdrv_open_flags(BlockDriverState *bs, int flags)
* Removes all processed options from *options.
*/
static int bdrv_open_common(BlockDriverState *bs, BlockDriverState *file,
QDict *options, int flags, BlockDriver *drv)
QDict *options, int flags, BlockDriver *drv, Error **errp)
{
int ret, open_flags;
const char *filename;
Error *local_err = NULL;
assert(drv != NULL);
assert(bs->file == NULL);
@ -738,6 +744,7 @@ static int bdrv_open_common(BlockDriverState *bs, BlockDriverState *file,
bs->read_only = !(open_flags & BDRV_O_RDWR);
if (use_bdrv_whitelist && !bdrv_is_whitelisted(drv, bs->read_only)) {
error_setg(errp, "Driver '%s' is not whitelisted", drv->format_name);
return -ENOTSUP;
}
@ -761,25 +768,32 @@ static int bdrv_open_common(BlockDriverState *bs, BlockDriverState *file,
if (drv->bdrv_file_open) {
assert(file == NULL);
assert(drv->bdrv_parse_filename || filename != NULL);
ret = drv->bdrv_file_open(bs, options, open_flags, NULL);
ret = drv->bdrv_file_open(bs, options, open_flags, &local_err);
} else {
if (file == NULL) {
qerror_report(ERROR_CLASS_GENERIC_ERROR, "Can't use '%s' as a "
"block driver for the protocol level",
drv->format_name);
error_setg(errp, "Can't use '%s' as a block driver for the "
"protocol level", drv->format_name);
ret = -EINVAL;
goto free_and_fail;
}
bs->file = file;
ret = drv->bdrv_open(bs, options, open_flags, NULL);
ret = drv->bdrv_open(bs, options, open_flags, &local_err);
}
if (ret < 0) {
if (error_is_set(&local_err)) {
error_propagate(errp, local_err);
} else if (filename) {
error_setg_errno(errp, -ret, "Could not open '%s'", filename);
} else {
error_setg_errno(errp, -ret, "Could not open image");
}
goto free_and_fail;
}
ret = refresh_total_sectors(bs, bs->total_sectors);
if (ret < 0) {
error_setg_errno(errp, -ret, "Could not refresh total sector count");
goto free_and_fail;
}
@ -808,12 +822,13 @@ free_and_fail:
* dictionary, it needs to use QINCREF() before calling bdrv_file_open.
*/
int bdrv_file_open(BlockDriverState **pbs, const char *filename,
QDict *options, int flags)
QDict *options, int flags, Error **errp)
{
BlockDriverState *bs;
BlockDriver *drv;
const char *drvname;
bool allow_protocol_prefix = false;
Error *local_err = NULL;
int ret;
/* NULL means an empty set of options */
@ -832,8 +847,8 @@ int bdrv_file_open(BlockDriverState **pbs, const char *filename,
qdict_put(options, "filename", qstring_from_str(filename));
allow_protocol_prefix = true;
} else {
qerror_report(ERROR_CLASS_GENERIC_ERROR, "Can't specify 'file' and "
"'filename' options at the same time");
error_setg(errp, "Can't specify 'file' and 'filename' options at the "
"same time");
ret = -EINVAL;
goto fail;
}
@ -842,53 +857,53 @@ int bdrv_file_open(BlockDriverState **pbs, const char *filename,
drvname = qdict_get_try_str(options, "driver");
if (drvname) {
drv = bdrv_find_whitelisted_format(drvname, !(flags & BDRV_O_RDWR));
if (!drv) {
error_setg(errp, "Unknown driver '%s'", drvname);
}
qdict_del(options, "driver");
} else if (filename) {
drv = bdrv_find_protocol(filename, allow_protocol_prefix);
if (!drv) {
qerror_report(ERROR_CLASS_GENERIC_ERROR, "Unknown protocol");
error_setg(errp, "Unknown protocol");
}
} else {
qerror_report(ERROR_CLASS_GENERIC_ERROR,
"Must specify either driver or file");
error_setg(errp, "Must specify either driver or file");
drv = NULL;
}
if (!drv) {
/* errp has been set already */
ret = -ENOENT;
goto fail;
}
/* Parse the filename and open it */
if (drv->bdrv_parse_filename && filename) {
Error *local_err = NULL;
drv->bdrv_parse_filename(filename, options, &local_err);
if (error_is_set(&local_err)) {
qerror_report_err(local_err);
error_free(local_err);
error_propagate(errp, local_err);
ret = -EINVAL;
goto fail;
}
qdict_del(options, "filename");
} else if (!drv->bdrv_parse_filename && !filename) {
qerror_report(ERROR_CLASS_GENERIC_ERROR,
"The '%s' block driver requires a file name",
drv->format_name);
error_setg(errp, "The '%s' block driver requires a file name",
drv->format_name);
ret = -EINVAL;
goto fail;
}
ret = bdrv_open_common(bs, NULL, options, flags, drv);
ret = bdrv_open_common(bs, NULL, options, flags, drv, &local_err);
if (ret < 0) {
error_propagate(errp, local_err);
goto fail;
}
/* Check if any unknown options were used */
if (qdict_size(options) != 0) {
const QDictEntry *entry = qdict_first(options);
qerror_report(ERROR_CLASS_GENERIC_ERROR, "Block protocol '%s' doesn't "
"support the option '%s'",
drv->format_name, entry->key);
error_setg(errp, "Block protocol '%s' doesn't support the option '%s'",
drv->format_name, entry->key);
ret = -EINVAL;
goto fail;
}
@ -915,11 +930,12 @@ fail:
* function (even on failure), so if the caller intends to reuse the dictionary,
* it needs to use QINCREF() before calling bdrv_file_open.
*/
int bdrv_open_backing_file(BlockDriverState *bs, QDict *options)
int bdrv_open_backing_file(BlockDriverState *bs, QDict *options, Error **errp)
{
char backing_filename[PATH_MAX];
int back_flags, ret;
BlockDriver *back_drv = NULL;
Error *local_err = NULL;
if (bs->backing_hd != NULL) {
QDECREF(options);
@ -952,11 +968,12 @@ int bdrv_open_backing_file(BlockDriverState *bs, QDict *options)
ret = bdrv_open(bs->backing_hd,
*backing_filename ? backing_filename : NULL, options,
back_flags, back_drv);
back_flags, back_drv, &local_err);
if (ret < 0) {
bdrv_unref(bs->backing_hd);
bs->backing_hd = NULL;
bs->open_flags |= BDRV_O_NO_BACKING;
error_propagate(errp, local_err);
return ret;
}
return 0;
@ -990,7 +1007,7 @@ static void extract_subqdict(QDict *src, QDict **dst, const char *start)
* dictionary, it needs to use QINCREF() before calling bdrv_open.
*/
int bdrv_open(BlockDriverState *bs, const char *filename, QDict *options,
int flags, BlockDriver *drv)
int flags, BlockDriver *drv, Error **errp)
{
int ret;
/* TODO: extra byte is a hack to ensure MAX_PATH space on Windows. */
@ -998,6 +1015,7 @@ int bdrv_open(BlockDriverState *bs, const char *filename, QDict *options,
BlockDriverState *file = NULL;
QDict *file_options = NULL;
const char *drvname;
Error *local_err = NULL;
/* NULL means an empty set of options */
if (options == NULL) {
@ -1016,7 +1034,7 @@ int bdrv_open(BlockDriverState *bs, const char *filename, QDict *options,
char backing_filename[PATH_MAX];
if (qdict_size(options) != 0) {
error_report("Can't use snapshot=on with driver-specific options");
error_setg(errp, "Can't use snapshot=on with driver-specific options");
ret = -EINVAL;
goto fail;
}
@ -1027,7 +1045,7 @@ int bdrv_open(BlockDriverState *bs, const char *filename, QDict *options,
/* if there is a backing file, use it */
bs1 = bdrv_new("");
ret = bdrv_open(bs1, filename, NULL, 0, drv);
ret = bdrv_open(bs1, filename, NULL, 0, drv, &local_err);
if (ret < 0) {
bdrv_unref(bs1);
goto fail;
@ -1038,6 +1056,7 @@ int bdrv_open(BlockDriverState *bs, const char *filename, QDict *options,
ret = get_tmp_filename(tmp_filename, sizeof(tmp_filename));
if (ret < 0) {
error_setg_errno(errp, -ret, "Could not get temporary filename");
goto fail;
}
@ -1046,6 +1065,7 @@ int bdrv_open(BlockDriverState *bs, const char *filename, QDict *options,
snprintf(backing_filename, sizeof(backing_filename),
"%s", filename);
} else if (!realpath(filename, backing_filename)) {
error_setg_errno(errp, errno, "Could not resolve path '%s'", filename);
ret = -errno;
goto fail;
}
@ -1065,6 +1085,8 @@ int bdrv_open(BlockDriverState *bs, const char *filename, QDict *options,
ret = bdrv_create(bdrv_qcow2, tmp_filename, create_options);
free_option_parameters(create_options);
if (ret < 0) {
error_setg_errno(errp, -ret, "Could not create temporary overlay "
"'%s'", tmp_filename);
goto fail;
}
@ -1081,7 +1103,7 @@ int bdrv_open(BlockDriverState *bs, const char *filename, QDict *options,
extract_subqdict(options, &file_options, "file.");
ret = bdrv_file_open(&file, filename, file_options,
bdrv_open_flags(bs, flags | BDRV_O_UNMAP));
bdrv_open_flags(bs, flags | BDRV_O_UNMAP), &local_err);
if (ret < 0) {
goto fail;
}
@ -1094,7 +1116,7 @@ int bdrv_open(BlockDriverState *bs, const char *filename, QDict *options,
}
if (!drv) {
ret = find_image_format(file, filename, &drv);
ret = find_image_format(file, filename, &drv, &local_err);
}
if (!drv) {
@ -1102,7 +1124,7 @@ int bdrv_open(BlockDriverState *bs, const char *filename, QDict *options,
}
/* Open the image */
ret = bdrv_open_common(bs, file, options, flags, drv);
ret = bdrv_open_common(bs, file, options, flags, drv, &local_err);
if (ret < 0) {
goto unlink_and_fail;
}
@ -1117,7 +1139,7 @@ int bdrv_open(BlockDriverState *bs, const char *filename, QDict *options,
QDict *backing_options;
extract_subqdict(options, &backing_options, "backing.");
ret = bdrv_open_backing_file(bs, backing_options);
ret = bdrv_open_backing_file(bs, backing_options, &local_err);
if (ret < 0) {
goto close_and_fail;
}
@ -1126,9 +1148,9 @@ int bdrv_open(BlockDriverState *bs, const char *filename, QDict *options,
/* Check if any unknown options were used */
if (qdict_size(options) != 0) {
const QDictEntry *entry = qdict_first(options);
qerror_report(ERROR_CLASS_GENERIC_ERROR, "Block format '%s' used by "
"device '%s' doesn't support the option '%s'",
drv->format_name, bs->device_name, entry->key);
error_setg(errp, "Block format '%s' used by device '%s' doesn't "
"support the option '%s'", drv->format_name, bs->device_name,
entry->key);
ret = -EINVAL;
goto close_and_fail;
@ -1152,11 +1174,17 @@ fail:
QDECREF(bs->options);
QDECREF(options);
bs->options = NULL;
if (error_is_set(&local_err)) {
error_propagate(errp, local_err);
}
return ret;
close_and_fail:
bdrv_close(bs);
QDECREF(options);
if (error_is_set(&local_err)) {
error_propagate(errp, local_err);
}
return ret;
}
@ -4519,7 +4547,7 @@ void bdrv_img_create(const char *filename, const char *fmt,
bs = bdrv_new("");
ret = bdrv_open(bs, backing_file->value.s, NULL, back_flags,
backing_drv);
backing_drv, NULL);
if (ret < 0) {
error_setg_errno(errp, -ret, "Could not open '%s'",
backing_file->value.s);

4
block/blkdebug.c
View File

@ -387,8 +387,10 @@ static int blkdebug_open(BlockDriverState *bs, QDict *options, int flags,
goto fail;
}
ret = bdrv_file_open(&bs->file, filename, NULL, flags);
ret = bdrv_file_open(&bs->file, filename, NULL, flags, &local_err);
if (ret < 0) {
qerror_report_err(local_err);
error_free(local_err);
goto fail;
}

8
block/blkverify.c
View File

@ -141,8 +141,10 @@ static int blkverify_open(BlockDriverState *bs, QDict *options, int flags,
goto fail;
}
ret = bdrv_file_open(&bs->file, raw, NULL, flags);
ret = bdrv_file_open(&bs->file, raw, NULL, flags, &local_err);
if (ret < 0) {
qerror_report_err(local_err);
error_free(local_err);
goto fail;
}
@ -154,8 +156,10 @@ static int blkverify_open(BlockDriverState *bs, QDict *options, int flags,
}
s->test_file = bdrv_new("");
ret = bdrv_open(s->test_file, filename, NULL, flags, NULL);
ret = bdrv_open(s->test_file, filename, NULL, flags, NULL, &local_err);
if (ret < 0) {
qerror_report_err(local_err);
error_free(local_err);
bdrv_unref(s->test_file);
s->test_file = NULL;
goto fail;

5
block/cow.c
View File

@ -302,6 +302,7 @@ static int cow_create(const char *filename, QEMUOptionParameter *options,
struct stat st;
int64_t image_sectors = 0;
const char *image_filename = NULL;
Error *local_err = NULL;
int ret;
BlockDriverState *cow_bs;
@ -320,8 +321,10 @@ static int cow_create(const char *filename, QEMUOptionParameter *options,
return ret;
}
ret = bdrv_file_open(&cow_bs, filename, NULL, BDRV_O_RDWR);
ret = bdrv_file_open(&cow_bs, filename, NULL, BDRV_O_RDWR, &local_err);
if (ret < 0) {
qerror_report_err(local_err);
error_free(local_err);
return ret;
}

5
block/mirror.c
View File

@ -505,14 +505,15 @@ static void mirror_iostatus_reset(BlockJob *job)
static void mirror_complete(BlockJob *job, Error **errp)
{
MirrorBlockJob *s = container_of(job, MirrorBlockJob, common);
Error *local_err = NULL;
int ret;
ret = bdrv_open_backing_file(s->target, NULL);
ret = bdrv_open_backing_file(s->target, NULL, &local_err);
if (ret < 0) {
char backing_filename[PATH_MAX];
bdrv_get_full_backing_filename(s->target, backing_filename,
sizeof(backing_filename));
error_setg_file_open(errp, -ret, backing_filename);
error_propagate(errp, local_err);
return;
}
if (!s->synced) {

5
block/qcow.c
View File

@ -668,6 +668,7 @@ static int qcow_create(const char *filename, QEMUOptionParameter *options,
int64_t total_size = 0;
const char *backing_file = NULL;
int flags = 0;
Error *local_err = NULL;
int ret;
BlockDriverState *qcow_bs;
@ -688,8 +689,10 @@ static int qcow_create(const char *filename, QEMUOptionParameter *options,
return ret;
}
ret = bdrv_file_open(&qcow_bs, filename, NULL, BDRV_O_RDWR);
ret = bdrv_file_open(&qcow_bs, filename, NULL, BDRV_O_RDWR, &local_err);
if (ret < 0) {
qerror_report_err(local_err);
error_free(local_err);
return ret;
}

4
block/qcow2.c
View File

@ -1370,7 +1370,7 @@ static int qcow2_create2(const char *filename, int64_t total_size,
return ret;
}
ret = bdrv_file_open(&bs, filename, NULL, BDRV_O_RDWR);
ret = bdrv_file_open(&bs, filename, NULL, BDRV_O_RDWR, NULL);
if (ret < 0) {
return ret;
}
@ -1423,7 +1423,7 @@ static int qcow2_create2(const char *filename, int64_t total_size,
BlockDriver* drv = bdrv_find_format("qcow2");
assert(drv != NULL);
ret = bdrv_open(bs, filename, NULL,
BDRV_O_RDWR | BDRV_O_CACHE_WB | BDRV_O_NO_FLUSH, drv);
BDRV_O_RDWR | BDRV_O_CACHE_WB | BDRV_O_NO_FLUSH, drv, NULL);
if (ret < 0) {
goto out;
}

6
block/qed.c
View File

@ -551,6 +551,7 @@ static int qed_create(const char *filename, uint32_t cluster_size,
QEDHeader le_header;
uint8_t *l1_table = NULL;
size_t l1_size = header.cluster_size * header.table_size;
Error *local_err = NULL;
int ret = 0;
BlockDriverState *bs = NULL;
@ -559,8 +560,11 @@ static int qed_create(const char *filename, uint32_t cluster_size,
return ret;
}
ret = bdrv_file_open(&bs, filename, NULL, BDRV_O_RDWR | BDRV_O_CACHE_WB);
ret = bdrv_file_open(&bs, filename, NULL, BDRV_O_RDWR | BDRV_O_CACHE_WB,
&local_err);
if (ret < 0) {
qerror_report_err(local_err);
error_free(local_err);
return ret;
}

10
block/sheepdog.c
View File

@ -1401,10 +1401,13 @@ static int sd_prealloc(const char *filename)
uint32_t idx, max_idx;
int64_t vdi_size;
void *buf = g_malloc0(SD_DATA_OBJ_SIZE);
Error *local_err = NULL;
int ret;
ret = bdrv_file_open(&bs, filename, NULL, BDRV_O_RDWR);
ret = bdrv_file_open(&bs, filename, NULL, BDRV_O_RDWR, &local_err);
if (ret < 0) {
qerror_report_err(local_err);
error_free(local_err);
goto out;
}
@ -1449,6 +1452,7 @@ static int sd_create(const char *filename, QEMUOptionParameter *options,
char vdi[SD_MAX_VDI_LEN], tag[SD_MAX_VDI_TAG_LEN];
uint32_t snapid;
bool prealloc = false;
Error *local_err = NULL;
s = g_malloc0(sizeof(BDRVSheepdogState));
@ -1502,8 +1506,10 @@ static int sd_create(const char *filename, QEMUOptionParameter *options,
goto out;
}
ret = bdrv_file_open(&bs, backing_file, NULL, 0);
ret = bdrv_file_open(&bs, backing_file, NULL, 0, &local_err);
if (ret < 0) {
qerror_report_err(local_err);
error_free(local_err);
goto out;
}

11
block/vmdk.c
View File

@ -697,6 +697,7 @@ static int vmdk_parse_extents(const char *desc, BlockDriverState *bs,
int64_t flat_offset;
char extent_path[PATH_MAX];
BlockDriverState *extent_file;
Error *local_err = NULL;
while (*p) {
/* parse extent line:
@ -726,8 +727,11 @@ static int vmdk_parse_extents(const char *desc, BlockDriverState *bs,
path_combine(extent_path, sizeof(extent_path),
desc_file_path, fname);
ret = bdrv_file_open(&extent_file, extent_path, NULL, bs->open_flags);
ret = bdrv_file_open(&extent_file, extent_path, NULL, bs->open_flags,
&local_err);
if (ret) {
qerror_report_err(local_err);
error_free(local_err);
return ret;
}
@ -1591,6 +1595,7 @@ static int vmdk_create(const char *filename, QEMUOptionParameter *options,
"ddb.geometry.heads = \"%d\"\n"
"ddb.geometry.sectors = \"63\"\n"
"ddb.adapterType = \"%s\"\n";
Error *local_err = NULL;
if (filename_decompose(filename, path, prefix, postfix, PATH_MAX)) {
return -EINVAL;
@ -1653,8 +1658,10 @@ static int vmdk_create(const char *filename, QEMUOptionParameter *options,
}
if (backing_file) {
BlockDriverState *bs = bdrv_new("");
ret = bdrv_open(bs, backing_file, NULL, 0, NULL);
ret = bdrv_open(bs, backing_file, NULL, 0, NULL, &local_err);
if (ret != 0) {
qerror_report_err(local_err);
error_free(local_err);
bdrv_unref(bs);
return ret;
}

6
block/vvfat.c
View File

@ -2910,6 +2910,7 @@ static int enable_write_target(BDRVVVFATState *s)
{
BlockDriver *bdrv_qcow;
QEMUOptionParameter *options;
Error *local_err = NULL;
int ret;
int size = sector2cluster(s, s->sector_count);
s->used_clusters = calloc(size, 1);
@ -2935,8 +2936,11 @@ static int enable_write_target(BDRVVVFATState *s)
s->qcow = bdrv_new("");
ret = bdrv_open(s->qcow, s->qcow_filename, NULL,
BDRV_O_RDWR | BDRV_O_CACHE_WB | BDRV_O_NO_FLUSH, bdrv_qcow);
BDRV_O_RDWR | BDRV_O_CACHE_WB | BDRV_O_NO_FLUSH, bdrv_qcow,
&local_err);
if (ret < 0) {
qerror_report_err(local_err);
error_free(local_err);
bdrv_unref(s->qcow);
goto err;
}

30
blockdev.c
View File

@ -710,17 +710,11 @@ static DriveInfo *blockdev_init(QemuOpts *all_opts,
}
QINCREF(bs_opts);
ret = bdrv_open(dinfo->bdrv, file, bs_opts, bdrv_flags, drv);
ret = bdrv_open(dinfo->bdrv, file, bs_opts, bdrv_flags, drv, &error);
if (ret < 0) {
if (ret == -EMEDIUMTYPE) {
error_report("could not open disk image %s: not in %s format",
file ?: dinfo->id, drv ? drv->format_name :
qdict_get_str(bs_opts, "driver"));
} else {
error_report("could not open disk image %s: %s",
file ?: dinfo->id, strerror(-ret));
}
error_report("could not open disk image %s: %s",
file ?: dinfo->id, error_get_pretty(error));
goto err;
}
@ -1156,9 +1150,9 @@ static void external_snapshot_prepare(BlkTransactionState *common,
/* TODO Inherit bs->options or only take explicit options with an
* extended QMP command? */
ret = bdrv_open(state->new_bs, new_image_file, NULL,
flags | BDRV_O_NO_BACKING, drv);
flags | BDRV_O_NO_BACKING, drv, &local_err);
if (ret != 0) {
error_setg_file_open(errp, -ret, new_image_file);
error_propagate(errp, local_err);
}
}
@ -1393,11 +1387,12 @@ static void qmp_bdrv_open_encrypted(BlockDriverState *bs, const char *filename,
int bdrv_flags, BlockDriver *drv,
const char *password, Error **errp)
{
Error *local_err = NULL;
int ret;
ret = bdrv_open(bs, filename, NULL, bdrv_flags, drv);
ret = bdrv_open(bs, filename, NULL, bdrv_flags, drv, &local_err);
if (ret < 0) {
error_setg_file_open(errp, -ret, filename);
error_propagate(errp, local_err);
return;
}
@ -1817,10 +1812,10 @@ void qmp_drive_backup(const char *device, const char *target,
}
target_bs = bdrv_new("");
ret = bdrv_open(target_bs, target, NULL, flags, drv);
ret = bdrv_open(target_bs, target, NULL, flags, drv, &local_err);
if (ret < 0) {
bdrv_unref(target_bs);
error_setg_file_open(errp, -ret, target);
error_propagate(errp, local_err);
return;
}
@ -1952,10 +1947,11 @@ void qmp_drive_mirror(const char *device, const char *target,
* file.
*/
target_bs = bdrv_new("");
ret = bdrv_open(target_bs, target, NULL, flags | BDRV_O_NO_BACKING, drv);
ret = bdrv_open(target_bs, target, NULL, flags | BDRV_O_NO_BACKING, drv,
&local_err);
if (ret < 0) {
bdrv_unref(target_bs);
error_setg_file_open(errp, -ret, target);
error_propagate(errp, local_err);
return;
}

7
hw/block/xen_disk.c
View File

@ -809,10 +809,15 @@ static int blk_connect(struct XenDevice *xendev)
xen_be_printf(&blkdev->xendev, 2, "create new bdrv (xenbus setup)\n");
blkdev->bs = bdrv_new(blkdev->dev);
if (blkdev->bs) {
Error *local_err = NULL;
BlockDriver *drv = bdrv_find_whitelisted_format(blkdev->fileproto,
readonly);
if (bdrv_open(blkdev->bs,
blkdev->filename, NULL, qflags, drv) != 0) {
blkdev->filename, NULL, qflags, drv, &local_err) != 0)
{
xen_be_printf(&blkdev->xendev, 0, "error: %s\n",
error_get_pretty(local_err));
error_free(local_err);
bdrv_unref(blkdev->bs);
blkdev->bs = NULL;
}

6
include/block/block.h
View File

@ -151,10 +151,10 @@ void bdrv_append(BlockDriverState *bs_new, BlockDriverState *bs_top);
int bdrv_parse_cache_flags(const char *mode, int *flags);
int bdrv_parse_discard_flags(const char *mode, int *flags);
int bdrv_file_open(BlockDriverState **pbs, const char *filename,
QDict *options, int flags);
int bdrv_open_backing_file(BlockDriverState *bs, QDict *options);
QDict *options, int flags, Error **errp);
int bdrv_open_backing_file(BlockDriverState *bs, QDict *options, Error **errp);
int bdrv_open(BlockDriverState *bs, const char *filename, QDict *options,
int flags, BlockDriver *drv);
int flags, BlockDriver *drv, Error **errp);
BlockReopenQueue *bdrv_reopen_queue(BlockReopenQueue *bs_queue,
BlockDriverState *bs, int flags);
int bdrv_reopen_multiple(BlockReopenQueue *bs_queue, Error **errp);

21
qemu-img.c
View File

@ -266,6 +266,7 @@ static BlockDriverState *bdrv_new_open(const char *filename,
BlockDriverState *bs;
BlockDriver *drv;
char password[256];
Error *local_err = NULL;
int ret;
bs = bdrv_new("image");
@ -280,9 +281,11 @@ static BlockDriverState *bdrv_new_open(const char *filename,
drv = NULL;
}
ret = bdrv_open(bs, filename, NULL, flags, drv);
ret = bdrv_open(bs, filename, NULL, flags, drv, &local_err);
if (ret < 0) {
error_report("Could not open '%s': %s", filename, strerror(-ret));
error_report("Could not open '%s': %s", filename,
error_get_pretty(local_err));
error_free(local_err);
goto fail;
}
@ -2127,6 +2130,7 @@ static int img_rebase(int argc, char **argv)
int unsafe = 0;
int progress = 0;
bool quiet = false;
Error *local_err = NULL;
/* Parse commandline parameters */
fmt = NULL;
@ -2230,18 +2234,21 @@ static int img_rebase(int argc, char **argv)
bs_old_backing = bdrv_new("old_backing");
bdrv_get_backing_filename(bs, backing_name, sizeof(backing_name));
ret = bdrv_open(bs_old_backing, backing_name, NULL, BDRV_O_FLAGS,
old_backing_drv);
old_backing_drv, &local_err);
if (ret) {
error_report("Could not open old backing file '%s'", backing_name);
error_report("Could not open old backing file '%s': %s",
backing_name, error_get_pretty(local_err));
error_free(local_err);
goto out;
}
if (out_baseimg[0]) {
bs_new_backing = bdrv_new("new_backing");
ret = bdrv_open(bs_new_backing, out_baseimg, NULL, BDRV_O_FLAGS,
new_backing_drv);
new_backing_drv, &local_err);
if (ret) {
error_report("Could not open new backing file '%s'",
out_baseimg);
error_report("Could not open new backing file '%s': %s",
out_baseimg, error_get_pretty(local_err));
error_free(local_err);
goto out;
}
}

14
qemu-io.c
View File

@ -46,21 +46,27 @@ static const cmdinfo_t close_cmd = {
static int openfile(char *name, int flags, int growable)
{
Error *local_err = NULL;
if (qemuio_bs) {
fprintf(stderr, "file open already, try 'help close'\n");
return 1;
}
if (growable) {
if (bdrv_file_open(&qemuio_bs, name, NULL, flags)) {
fprintf(stderr, "%s: can't open device %s\n", progname, name);
if (bdrv_file_open(&qemuio_bs, name, NULL, flags, &local_err)) {
fprintf(stderr, "%s: can't open device %s: %s\n", progname, name,
error_get_pretty(local_err));
error_free(local_err);
return 1;
}
} else {
qemuio_bs = bdrv_new("hda");
if (bdrv_open(qemuio_bs, name, NULL, flags, NULL) < 0) {
fprintf(stderr, "%s: can't open device %s\n", progname, name);
if (bdrv_open(qemuio_bs, name, NULL, flags, NULL, &local_err) < 0) {
fprintf(stderr, "%s: can't open device %s: %s\n", progname, name,
error_get_pretty(local_err));
error_free(local_err);
bdrv_unref(qemuio_bs);
qemuio_bs = NULL;
return 1;

6
qemu-nbd.c
View File

@ -355,6 +355,7 @@ int main(int argc, char **argv)
#endif
pthread_t client_thread;
const char *fmt = NULL;
Error *local_err = NULL;
/* The client thread uses SIGTERM to interrupt the server. A signal
* handler ensures that "qemu-nbd -v -c" exits with a nice status code.
@ -573,10 +574,11 @@ int main(int argc, char **argv)
bs = bdrv_new("hda");
srcpath = argv[optind];
ret = bdrv_open(bs, srcpath, NULL, flags, drv);
ret = bdrv_open(bs, srcpath, NULL, flags, drv, &local_err);
if (ret < 0) {
errno = -ret;
err(EXIT_FAILURE, "Failed to bdrv_open '%s'", argv[optind]);
err(EXIT_FAILURE, "Failed to bdrv_open '%s': %s", argv[optind],
error_get_pretty(local_err));
}
fd_size = bdrv_getlength(bs);