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Merge remote-tracking branch 'kwolf/for-anthony' into staging

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# By Kevin Wolf (16) and Stefan Hajnoczi (4)
# Via Kevin Wolf
* kwolf/for-anthony:
  qemu-iotests: add 053 unaligned compressed image size test
  block: Allow overriding backing.file.filename
  block: Remove filename parameter from .bdrv_file_open()
  vvfat: Use bdrv_open options instead of filename
  sheepdog: Use bdrv_open options instead of filename
  rbd: Use bdrv_open options instead of filename
  iscsi: Use bdrv_open options instead of filename
  gluster: Use bdrv_open options instead of filename
  curl: Use bdrv_open options instead of filename
  blkverify: Use bdrv_open options instead of filename
  blkdebug: Use bdrv_open options instead of filename
  raw-win32: Use bdrv_open options instead of filename
  raw-posix: Use bdrv_open options instead of filename
  block: Enable filename option
  block: Add driver-specific options for backing files
  block: Fail gracefully when using a format driver on protocol level
  qemu-iotests: Fix _filter_qemu
  qemu-img: do not zero-pad the compressed write buffer
  qcow: allow sub-cluster compressed write to last cluster
  qcow2: allow sub-cluster compressed write to last cluster

Message-id: 1366630294-18984-1-git-send-email-kwolf@redhat.com
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Anthony Liguori 2013-04-22 08:08:22 -05:00
commit f1ab7a5acf
25 changed files with 864 additions and 245 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

65
block.c
View File

@ -667,10 +667,10 @@ static int bdrv_open_flags(BlockDriverState *bs, int flags)
* Removes all processed options from *options.
*/
static int bdrv_open_common(BlockDriverState *bs, BlockDriverState *file,
const char *filename, QDict *options,
int flags, BlockDriver *drv)
QDict *options, int flags, BlockDriver *drv)
{
int ret, open_flags;
const char *filename;
assert(drv != NULL);
assert(bs->file == NULL);
@ -698,6 +698,12 @@ static int bdrv_open_common(BlockDriverState *bs, BlockDriverState *file,
bdrv_enable_copy_on_read(bs);
}
if (file != NULL) {
filename = file->filename;
} else {
filename = qdict_get_try_str(options, "filename");
}
if (filename != NULL) {
pstrcpy(bs->filename, sizeof(bs->filename), filename);
} else {
@ -716,8 +722,15 @@ 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, filename, options, open_flags);
ret = drv->bdrv_file_open(bs, options, open_flags);
} 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);
ret = -EINVAL;
goto free_and_fail;
}
assert(file != NULL);
bs->file = file;
ret = drv->bdrv_open(bs, options, open_flags);
@ -773,6 +786,18 @@ int bdrv_file_open(BlockDriverState **pbs, const char *filename,
bs->options = options;
options = qdict_clone_shallow(options);
/* Fetch the file name from the options QDict if necessary */
if (!filename) {
filename = qdict_get_try_str(options, "filename");
} else if (filename && !qdict_haskey(options, "filename")) {
qdict_put(options, "filename", qstring_from_str(filename));
} else {
qerror_report(ERROR_CLASS_GENERIC_ERROR, "Can't specify 'file' and "
"'filename' options at the same time");
ret = -EINVAL;
goto fail;
}
/* Find the right block driver */
drvname = qdict_get_try_str(options, "driver");
if (drvname) {
@ -801,6 +826,7 @@ int bdrv_file_open(BlockDriverState **pbs, const char *filename,
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",
@ -809,7 +835,7 @@ int bdrv_file_open(BlockDriverState **pbs, const char *filename,
goto fail;
}
ret = bdrv_open_common(bs, NULL, filename, options, flags, drv);
ret = bdrv_open_common(bs, NULL, options, flags, drv);
if (ret < 0) {
goto fail;
}
@ -838,18 +864,35 @@ fail:
return ret;
}
int bdrv_open_backing_file(BlockDriverState *bs)
/*
* Opens the backing file for a BlockDriverState if not yet open
*
* options is a QDict of options to pass to the block drivers, or NULL for an
* empty set of options. The reference to the QDict is transferred to this
* 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)
{
char backing_filename[PATH_MAX];
int back_flags, ret;
BlockDriver *back_drv = NULL;
if (bs->backing_hd != NULL) {
QDECREF(options);
return 0;
}
/* NULL means an empty set of options */
if (options == NULL) {
options = qdict_new();
}
bs->open_flags &= ~BDRV_O_NO_BACKING;
if (bs->backing_file[0] == '\0') {
if (qdict_haskey(options, "file.filename")) {
backing_filename[0] = '\0';
} else if (bs->backing_file[0] == '\0' && qdict_size(options) == 0) {
QDECREF(options);
return 0;
}
@ -864,7 +907,8 @@ int bdrv_open_backing_file(BlockDriverState *bs)
/* backing files always opened read-only */
back_flags = bs->open_flags & ~(BDRV_O_RDWR | BDRV_O_SNAPSHOT);
ret = bdrv_open(bs->backing_hd, backing_filename, NULL,
ret = bdrv_open(bs->backing_hd,
*backing_filename ? backing_filename : NULL, options,
back_flags, back_drv);
if (ret < 0) {
bdrv_delete(bs->backing_hd);
@ -1008,7 +1052,7 @@ int bdrv_open(BlockDriverState *bs, const char *filename, QDict *options,
}
/* Open the image */
ret = bdrv_open_common(bs, file, filename, options, flags, drv);
ret = bdrv_open_common(bs, file, options, flags, drv);
if (ret < 0) {
goto unlink_and_fail;
}
@ -1020,7 +1064,10 @@ int bdrv_open(BlockDriverState *bs, const char *filename, QDict *options,
/* If there is a backing file, use it */
if ((flags & BDRV_O_NO_BACKING) == 0) {
ret = bdrv_open_backing_file(bs);
QDict *backing_options;
extract_subqdict(options, &backing_options, "backing.");
ret = bdrv_open_backing_file(bs, backing_options);
if (ret < 0) {
goto close_and_fail;
}

117
block/blkdebug.c
View File

@ -273,11 +273,6 @@ static int read_config(BDRVBlkdebugState *s, const char *filename)
int ret;
struct add_rule_data d;
/* Allow usage without config file */
if (!*filename) {
return 0;
}
f = fopen(filename, "r");
if (f == NULL) {
return -errno;
@ -304,44 +299,98 @@ fail:
}
/* Valid blkdebug filenames look like blkdebug:path/to/config:path/to/image */
static int blkdebug_open(BlockDriverState *bs, const char *filename,
QDict *options, int flags)
static void blkdebug_parse_filename(const char *filename, QDict *options,
Error **errp)
{
BDRVBlkdebugState *s = bs->opaque;
int ret;
char *config, *c;
const char *c;
/* Parse the blkdebug: prefix */
if (strncmp(filename, "blkdebug:", strlen("blkdebug:"))) {
return -EINVAL;
if (!strstart(filename, "blkdebug:", &filename)) {
error_setg(errp, "File name string must start with 'blkdebug:'");
return;
}
filename += strlen("blkdebug:");
/* Read rules from config file */
/* Parse config file path */
c = strchr(filename, ':');
if (c == NULL) {
return -EINVAL;
error_setg(errp, "blkdebug requires both config file and image path");
return;
}
config = g_strdup(filename);
config[c - filename] = '\0';
ret = read_config(s, config);
g_free(config);
if (ret < 0) {
return ret;
if (c != filename) {
QString *config_path;
config_path = qstring_from_substr(filename, 0, c - filename - 1);
qdict_put(options, "config", config_path);
}
/* TODO Allow multi-level nesting and set file.filename here */
filename = c + 1;
qdict_put(options, "x-image", qstring_from_str(filename));
}
static QemuOptsList runtime_opts = {
.name = "blkdebug",
.head = QTAILQ_HEAD_INITIALIZER(runtime_opts.head),
.desc = {
{
.name = "config",
.type = QEMU_OPT_STRING,
.help = "Path to the configuration file",
},
{
.name = "x-image",
.type = QEMU_OPT_STRING,
.help = "[internal use only, will be removed]",
},
{ /* end of list */ }
},
};
static int blkdebug_open(BlockDriverState *bs, QDict *options, int flags)
{
BDRVBlkdebugState *s = bs->opaque;
QemuOpts *opts;
Error *local_err = NULL;
const char *filename, *config;
int ret;
opts = qemu_opts_create_nofail(&runtime_opts);
qemu_opts_absorb_qdict(opts, options, &local_err);
if (error_is_set(&local_err)) {
qerror_report_err(local_err);
error_free(local_err);
ret = -EINVAL;
goto fail;
}
/* Read rules from config file */
config = qemu_opt_get(opts, "config");
if (config) {
ret = read_config(s, config);
if (ret < 0) {
goto fail;
}
}
/* Set initial state */
s->state = 1;
/* Open the backing file */
ret = bdrv_file_open(&bs->file, filename, NULL, flags);
if (ret < 0) {
return ret;
filename = qemu_opt_get(opts, "x-image");
if (filename == NULL) {
ret = -EINVAL;
goto fail;
}
return 0;
ret = bdrv_file_open(&bs->file, filename, NULL, flags);
if (ret < 0) {
goto fail;
}
ret = 0;
fail:
qemu_opts_del(opts);
return ret;
}
static void error_callback_bh(void *opaque)
@ -569,17 +618,17 @@ static int64_t blkdebug_getlength(BlockDriverState *bs)
}
static BlockDriver bdrv_blkdebug = {
.format_name = "blkdebug",
.protocol_name = "blkdebug",
.format_name = "blkdebug",
.protocol_name = "blkdebug",
.instance_size = sizeof(BDRVBlkdebugState),
.instance_size = sizeof(BDRVBlkdebugState),
.bdrv_parse_filename = blkdebug_parse_filename,
.bdrv_file_open = blkdebug_open,
.bdrv_close = blkdebug_close,
.bdrv_getlength = blkdebug_getlength,
.bdrv_file_open = blkdebug_open,
.bdrv_close = blkdebug_close,
.bdrv_getlength = blkdebug_getlength,
.bdrv_aio_readv = blkdebug_aio_readv,
.bdrv_aio_writev = blkdebug_aio_writev,
.bdrv_aio_readv = blkdebug_aio_readv,
.bdrv_aio_writev = blkdebug_aio_writev,
.bdrv_debug_event = blkdebug_debug_event,
.bdrv_debug_breakpoint = blkdebug_debug_breakpoint,

113
block/blkverify.c
View File

@ -69,44 +69,100 @@ static void GCC_FMT_ATTR(2, 3) blkverify_err(BlkverifyAIOCB *acb,
}
/* Valid blkverify filenames look like blkverify:path/to/raw_image:path/to/image */
static int blkverify_open(BlockDriverState *bs, const char *filename,
QDict *options, int flags)
static void blkverify_parse_filename(const char *filename, QDict *options,
Error **errp)
{
BDRVBlkverifyState *s = bs->opaque;
int ret;
char *raw, *c;
const char *c;
QString *raw_path;
/* Parse the blkverify: prefix */
if (strncmp(filename, "blkverify:", strlen("blkverify:"))) {
return -EINVAL;
if (!strstart(filename, "blkverify:", &filename)) {
error_setg(errp, "File name string must start with 'blkverify:'");
return;
}
filename += strlen("blkverify:");
/* Parse the raw image filename */
c = strchr(filename, ':');
if (c == NULL) {
return -EINVAL;
error_setg(errp, "blkverify requires raw copy and original image path");
return;
}
raw = g_strdup(filename);
raw[c - filename] = '\0';
ret = bdrv_file_open(&bs->file, raw, NULL, flags);
g_free(raw);
if (ret < 0) {
return ret;
}
/* TODO Implement option pass-through and set raw.filename here */
raw_path = qstring_from_substr(filename, 0, c - filename - 1);
qdict_put(options, "x-raw", raw_path);
/* TODO Allow multi-level nesting and set file.filename here */
filename = c + 1;
qdict_put(options, "x-image", qstring_from_str(filename));
}
static QemuOptsList runtime_opts = {
.name = "blkverify",
.head = QTAILQ_HEAD_INITIALIZER(runtime_opts.head),
.desc = {
{
.name = "x-raw",
.type = QEMU_OPT_STRING,
.help = "[internal use only, will be removed]",
},
{
.name = "x-image",
.type = QEMU_OPT_STRING,
.help = "[internal use only, will be removed]",
},
{ /* end of list */ }
},
};
static int blkverify_open(BlockDriverState *bs, QDict *options, int flags)
{
BDRVBlkverifyState *s = bs->opaque;
QemuOpts *opts;
Error *local_err = NULL;
const char *filename, *raw;
int ret;
opts = qemu_opts_create_nofail(&runtime_opts);
qemu_opts_absorb_qdict(opts, options, &local_err);
if (error_is_set(&local_err)) {
qerror_report_err(local_err);
error_free(local_err);
ret = -EINVAL;
goto fail;
}
/* Parse the raw image filename */
raw = qemu_opt_get(opts, "x-raw");
if (raw == NULL) {
ret = -EINVAL;
goto fail;
}
ret = bdrv_file_open(&bs->file, raw, NULL, flags);
if (ret < 0) {
goto fail;
}
/* Open the test file */
filename = qemu_opt_get(opts, "x-image");
if (filename == NULL) {
ret = -EINVAL;
goto fail;
}
s->test_file = bdrv_new("");
ret = bdrv_open(s->test_file, filename, NULL, flags, NULL);
if (ret < 0) {
bdrv_delete(s->test_file);
s->test_file = NULL;
return ret;
goto fail;
}
return 0;
ret = 0;
fail:
return ret;
}
static void blkverify_close(BlockDriverState *bs)
@ -344,19 +400,18 @@ static BlockDriverAIOCB *blkverify_aio_flush(BlockDriverState *bs,
}
static BlockDriver bdrv_blkverify = {
.format_name = "blkverify",
.protocol_name = "blkverify",
.format_name = "blkverify",
.protocol_name = "blkverify",
.instance_size = sizeof(BDRVBlkverifyState),
.instance_size = sizeof(BDRVBlkverifyState),
.bdrv_parse_filename = blkverify_parse_filename,
.bdrv_file_open = blkverify_open,
.bdrv_close = blkverify_close,
.bdrv_getlength = blkverify_getlength,
.bdrv_getlength = blkverify_getlength,
.bdrv_file_open = blkverify_open,
.bdrv_close = blkverify_close,
.bdrv_aio_readv = blkverify_aio_readv,
.bdrv_aio_writev = blkverify_aio_writev,
.bdrv_aio_flush = blkverify_aio_flush,
.bdrv_aio_readv = blkverify_aio_readv,
.bdrv_aio_writev = blkverify_aio_writev,
.bdrv_aio_flush = blkverify_aio_flush,
};
static void bdrv_blkverify_init(void)

152
block/curl.c
View File

@ -335,12 +335,9 @@ static void curl_clean_state(CURLState *s)
s->in_use = 0;
}
static int curl_open(BlockDriverState *bs, const char *filename,
QDict *options, int flags)
static void curl_parse_filename(const char *filename, QDict *options,
Error **errp)
{
BDRVCURLState *s = bs->opaque;
CURLState *state = NULL;
double d;
#define RA_OPTSTR ":readahead="
char *file;
@ -348,19 +345,17 @@ static int curl_open(BlockDriverState *bs, const char *filename,
const char *ra_val;
int parse_state = 0;
static int inited = 0;
file = g_strdup(filename);
s->readahead_size = READ_AHEAD_SIZE;
/* Parse a trailing ":readahead=#:" param, if present. */
ra = file + strlen(file) - 1;
while (ra >= file) {
if (parse_state == 0) {
if (*ra == ':')
if (*ra == ':') {
parse_state++;
else
} else {
break;
}
} else if (parse_state == 1) {
if (*ra > '9' || *ra < '0') {
char *opt_start = ra - strlen(RA_OPTSTR) + 1;
@ -369,29 +364,77 @@ static int curl_open(BlockDriverState *bs, const char *filename,
ra_val = ra + 1;
ra -= strlen(RA_OPTSTR) - 1;
*ra = '\0';
s->readahead_size = atoi(ra_val);
break;
} else {
break;
qdict_put(options, "readahead", qstring_from_str(ra_val));
}
break;
}
}
ra--;
}
qdict_put(options, "url", qstring_from_str(file));
g_free(file);
}
static QemuOptsList runtime_opts = {
.name = "curl",
.head = QTAILQ_HEAD_INITIALIZER(runtime_opts.head),
.desc = {
{
.name = "url",
.type = QEMU_OPT_STRING,
.help = "URL to open",
},
{
.name = "readahead",
.type = QEMU_OPT_SIZE,
.help = "Readahead size",
},
{ /* end of list */ }
},
};
static int curl_open(BlockDriverState *bs, QDict *options, int flags)
{
BDRVCURLState *s = bs->opaque;
CURLState *state = NULL;
QemuOpts *opts;
Error *local_err = NULL;
const char *file;
double d;
static int inited = 0;
opts = qemu_opts_create_nofail(&runtime_opts);
qemu_opts_absorb_qdict(opts, options, &local_err);
if (error_is_set(&local_err)) {
qerror_report_err(local_err);
error_free(local_err);
goto out_noclean;
}
s->readahead_size = qemu_opt_get_size(opts, "readahead", READ_AHEAD_SIZE);
if ((s->readahead_size & 0x1ff) != 0) {
fprintf(stderr, "HTTP_READAHEAD_SIZE %zd is not a multiple of 512\n",
s->readahead_size);
goto out_noclean;
}
file = qemu_opt_get(opts, "url");
if (file == NULL) {
qerror_report(ERROR_CLASS_GENERIC_ERROR, "curl block driver requires "
"an 'url' option");
goto out_noclean;
}
if (!inited) {
curl_global_init(CURL_GLOBAL_ALL);
inited = 1;
}
DPRINTF("CURL: Opening %s\n", file);
s->url = file;
s->url = g_strdup(file);
state = curl_init_state(s);
if (!state)
goto out_noclean;
@ -423,6 +466,7 @@ static int curl_open(BlockDriverState *bs, const char *filename,
curl_multi_setopt( s->multi, CURLMOPT_SOCKETFUNCTION, curl_sock_cb );
curl_multi_do(s);
qemu_opts_del(opts);
return 0;
out:
@ -430,7 +474,8 @@ out:
curl_easy_cleanup(state->curl);
state->curl = NULL;
out_noclean:
g_free(file);
g_free(s->url);
qemu_opts_del(opts);
return -EINVAL;
}
@ -568,63 +613,68 @@ static int64_t curl_getlength(BlockDriverState *bs)
}
static BlockDriver bdrv_http = {
.format_name = "http",
.protocol_name = "http",
.format_name = "http",
.protocol_name = "http",
.instance_size = sizeof(BDRVCURLState),
.bdrv_file_open = curl_open,
.bdrv_close = curl_close,
.bdrv_getlength = curl_getlength,
.instance_size = sizeof(BDRVCURLState),
.bdrv_parse_filename = curl_parse_filename,
.bdrv_file_open = curl_open,
.bdrv_close = curl_close,
.bdrv_getlength = curl_getlength,
.bdrv_aio_readv = curl_aio_readv,
.bdrv_aio_readv = curl_aio_readv,
};
static BlockDriver bdrv_https = {
.format_name = "https",
.protocol_name = "https",
.format_name = "https",
.protocol_name = "https",
.instance_size = sizeof(BDRVCURLState),
.bdrv_file_open = curl_open,
.bdrv_close = curl_close,
.bdrv_getlength = curl_getlength,
.instance_size = sizeof(BDRVCURLState),
.bdrv_parse_filename = curl_parse_filename,
.bdrv_file_open = curl_open,
.bdrv_close = curl_close,
.bdrv_getlength = curl_getlength,
.bdrv_aio_readv = curl_aio_readv,
.bdrv_aio_readv = curl_aio_readv,
};
static BlockDriver bdrv_ftp = {
.format_name = "ftp",
.protocol_name = "ftp",
.format_name = "ftp",
.protocol_name = "ftp",
.instance_size = sizeof(BDRVCURLState),
.bdrv_file_open = curl_open,
.bdrv_close = curl_close,
.bdrv_getlength = curl_getlength,
.instance_size = sizeof(BDRVCURLState),
.bdrv_parse_filename = curl_parse_filename,
.bdrv_file_open = curl_open,
.bdrv_close = curl_close,
.bdrv_getlength = curl_getlength,
.bdrv_aio_readv = curl_aio_readv,
.bdrv_aio_readv = curl_aio_readv,
};
static BlockDriver bdrv_ftps = {
.format_name = "ftps",
.protocol_name = "ftps",
.format_name = "ftps",
.protocol_name = "ftps",
.instance_size = sizeof(BDRVCURLState),
.bdrv_file_open = curl_open,
.bdrv_close = curl_close,
.bdrv_getlength = curl_getlength,
.instance_size = sizeof(BDRVCURLState),
.bdrv_parse_filename = curl_parse_filename,
.bdrv_file_open = curl_open,
.bdrv_close = curl_close,
.bdrv_getlength = curl_getlength,
.bdrv_aio_readv = curl_aio_readv,
.bdrv_aio_readv = curl_aio_readv,
};
static BlockDriver bdrv_tftp = {
.format_name = "tftp",
.protocol_name = "tftp",
.format_name = "tftp",
.protocol_name = "tftp",
.instance_size = sizeof(BDRVCURLState),
.bdrv_file_open = curl_open,
.bdrv_close = curl_close,
.bdrv_getlength = curl_getlength,
.instance_size = sizeof(BDRVCURLState),
.bdrv_parse_filename = curl_parse_filename,
.bdrv_file_open = curl_open,
.bdrv_close = curl_close,
.bdrv_getlength = curl_getlength,
.bdrv_aio_readv = curl_aio_readv,
.bdrv_aio_readv = curl_aio_readv,
};
static void curl_block_init(void)

34
block/gluster.c
View File

@ -282,13 +282,42 @@ static int qemu_gluster_aio_flush_cb(void *opaque)
return (s->qemu_aio_count > 0);
}
static int qemu_gluster_open(BlockDriverState *bs, const char *filename,
QDict *options, int bdrv_flags)
/* TODO Convert to fine grained options */
static QemuOptsList runtime_opts = {
.name = "gluster",
.head = QTAILQ_HEAD_INITIALIZER(runtime_opts.head),
.desc = {
{
.name = "filename",
.type = QEMU_OPT_STRING,
.help = "URL to the gluster image",
},
{ /* end of list */ }
},
};
static int qemu_gluster_open(BlockDriverState *bs, QDict *options,
int bdrv_flags)
{
BDRVGlusterState *s = bs->opaque;
int open_flags = O_BINARY;
int ret = 0;
GlusterConf *gconf = g_malloc0(sizeof(GlusterConf));
QemuOpts *opts;
Error *local_err = NULL;
const char *filename;
opts = qemu_opts_create_nofail(&runtime_opts);
qemu_opts_absorb_qdict(opts, options, &local_err);
if (error_is_set(&local_err)) {
qerror_report_err(local_err);
error_free(local_err);
ret = -EINVAL;
goto out;
}
filename = qemu_opt_get(opts, "filename");
s->glfs = qemu_gluster_init(gconf, filename);
if (!s->glfs) {
@ -322,6 +351,7 @@ static int qemu_gluster_open(BlockDriverState *bs, const char *filename,
qemu_gluster_aio_event_reader, NULL, qemu_gluster_aio_flush_cb, s);
out:
qemu_opts_del(opts);
qemu_gluster_gconf_free(gconf);
if (!ret) {
return ret;

40
block/iscsi.c
View File

@ -1003,12 +1003,25 @@ out:
return ret;
}
/* TODO Convert to fine grained options */
static QemuOptsList runtime_opts = {
.name = "iscsi",
.head = QTAILQ_HEAD_INITIALIZER(runtime_opts.head),
.desc = {
{
.name = "filename",
.type = QEMU_OPT_STRING,
.help = "URL to the iscsi image",
},
{ /* end of list */ }
},
};
/*
* We support iscsi url's on the form
* iscsi://[<username>%<password>@]<host>[:<port>]/<targetname>/<lun>
*/
static int iscsi_open(BlockDriverState *bs, const char *filename,
QDict *options, int flags)
static int iscsi_open(BlockDriverState *bs, QDict *options, int flags)
{
IscsiLun *iscsilun = bs->opaque;
struct iscsi_context *iscsi = NULL;
@ -1016,6 +1029,9 @@ static int iscsi_open(BlockDriverState *bs, const char *filename,
struct scsi_task *task = NULL;
struct scsi_inquiry_standard *inq = NULL;
char *initiator_name = NULL;
QemuOpts *opts;
Error *local_err = NULL;
const char *filename;
int ret;
if ((BDRV_SECTOR_SIZE % 512) != 0) {
@ -1025,6 +1041,18 @@ static int iscsi_open(BlockDriverState *bs, const char *filename,
return -EINVAL;
}
opts = qemu_opts_create_nofail(&runtime_opts);
qemu_opts_absorb_qdict(opts, options, &local_err);
if (error_is_set(&local_err)) {
qerror_report_err(local_err);
error_free(local_err);
ret = -EINVAL;
goto out;
}
filename = qemu_opt_get(opts, "filename");
iscsi_url = iscsi_parse_full_url(iscsi, filename);
if (iscsi_url == NULL) {
error_report("Failed to parse URL : %s", filename);
@ -1126,6 +1154,7 @@ static int iscsi_open(BlockDriverState *bs, const char *filename,
#endif
out:
qemu_opts_del(opts);
if (initiator_name != NULL) {
g_free(initiator_name);
}
@ -1190,6 +1219,7 @@ static int iscsi_create(const char *filename, QEMUOptionParameter *options)
int64_t total_size = 0;
BlockDriverState bs;
IscsiLun *iscsilun = NULL;
QDict *bs_options;
memset(&bs, 0, sizeof(BlockDriverState));
@ -1204,7 +1234,11 @@ static int iscsi_create(const char *filename, QEMUOptionParameter *options)
bs.opaque = g_malloc0(sizeof(struct IscsiLun));
iscsilun = bs.opaque;
ret = iscsi_open(&bs, filename, NULL, 0);
bs_options = qdict_new();
qdict_put(bs_options, "filename", qstring_from_str(filename));
ret = iscsi_open(&bs, bs_options, 0);
QDECREF(bs_options);
if (ret != 0) {
goto out;
}

2
block/mirror.c
View File

@ -507,7 +507,7 @@ static void mirror_complete(BlockJob *job, Error **errp)
MirrorBlockJob *s = container_of(job, MirrorBlockJob, common);
int ret;
ret = bdrv_open_backing_file(s->target);
ret = bdrv_open_backing_file(s->target, NULL);
if (ret < 0) {
char backing_filename[PATH_MAX];
bdrv_get_full_backing_filename(s->target, backing_filename,

3
block/nbd.c
View File

@ -454,8 +454,7 @@ static void nbd_teardown_connection(BlockDriverState *bs)
closesocket(s->sock);
}
static int nbd_open(BlockDriverState *bs, const char* filename,
QDict *options, int flags)
static int nbd_open(BlockDriverState *bs, QDict *options, int flags)
{
BDRVNBDState *s = bs->opaque;
int result;

17
block/qcow.c
View File

@ -787,8 +787,21 @@ static int qcow_write_compressed(BlockDriverState *bs, int64_t sector_num,
uint8_t *out_buf;
uint64_t cluster_offset;
if (nb_sectors != s->cluster_sectors)
return -EINVAL;
if (nb_sectors != s->cluster_sectors) {
ret = -EINVAL;
/* Zero-pad last write if image size is not cluster aligned */
if (sector_num + nb_sectors == bs->total_sectors &&
nb_sectors < s->cluster_sectors) {
uint8_t *pad_buf = qemu_blockalign(bs, s->cluster_size);
memset(pad_buf, 0, s->cluster_size);
memcpy(pad_buf, buf, nb_sectors * BDRV_SECTOR_SIZE);
ret = qcow_write_compressed(bs, sector_num,
pad_buf, s->cluster_sectors);
qemu_vfree(pad_buf);
}
return ret;
}
out_buf = g_malloc(s->cluster_size + (s->cluster_size / 1000) + 128);

17
block/qcow2.c
View File

@ -1537,8 +1537,21 @@ static int qcow2_write_compressed(BlockDriverState *bs, int64_t sector_num,
return 0;
}
if (nb_sectors != s->cluster_sectors)
return -EINVAL;
if (nb_sectors != s->cluster_sectors) {
ret = -EINVAL;
/* Zero-pad last write if image size is not cluster aligned */
if (sector_num + nb_sectors == bs->total_sectors &&
nb_sectors < s->cluster_sectors) {
uint8_t *pad_buf = qemu_blockalign(bs, s->cluster_size);
memset(pad_buf, 0, s->cluster_size);
memcpy(pad_buf, buf, nb_sectors * BDRV_SECTOR_SIZE);
ret = qcow2_write_compressed(bs, sector_num,
pad_buf, s->cluster_sectors);
qemu_vfree(pad_buf);
}
return ret;
}
out_buf = g_malloc(s->cluster_size + (s->cluster_size / 1000) + 128);

70
block/raw-posix.c
View File

@ -262,15 +262,42 @@ error:
}
#endif
static int raw_open_common(BlockDriverState *bs, const char *filename,
static QemuOptsList raw_runtime_opts = {
.name = "raw",
.head = QTAILQ_HEAD_INITIALIZER(raw_runtime_opts.head),
.desc = {
{
.name = "filename",
.type = QEMU_OPT_STRING,
.help = "File name of the image",
},
{ /* end of list */ }
},
};
static int raw_open_common(BlockDriverState *bs, QDict *options,
int bdrv_flags, int open_flags)
{
BDRVRawState *s = bs->opaque;
QemuOpts *opts;
Error *local_err = NULL;
const char *filename;
int fd, ret;
opts = qemu_opts_create_nofail(&raw_runtime_opts);
qemu_opts_absorb_qdict(opts, options, &local_err);
if (error_is_set(&local_err)) {
qerror_report_err(local_err);
error_free(local_err);
ret = -EINVAL;
goto fail;
}
filename = qemu_opt_get(opts, "filename");
ret = raw_normalize_devicepath(&filename);
if (ret != 0) {
return ret;
goto fail;
}
s->open_flags = open_flags;
@ -280,16 +307,18 @@ static int raw_open_common(BlockDriverState *bs, const char *filename,
fd = qemu_open(filename, s->open_flags, 0644);
if (fd < 0) {
ret = -errno;
if (ret == -EROFS)
if (ret == -EROFS) {
ret = -EACCES;
return ret;
}
goto fail;
}
s->fd = fd;
#ifdef CONFIG_LINUX_AIO
if (raw_set_aio(&s->aio_ctx, &s->use_aio, bdrv_flags)) {
qemu_close(fd);
return -errno;
ret = -errno;
goto fail;
}
#endif
@ -300,16 +329,18 @@ static int raw_open_common(BlockDriverState *bs, const char *filename,
}
#endif
return 0;
ret = 0;
fail:
qemu_opts_del(opts);
return ret;
}
static int raw_open(BlockDriverState *bs, const char *filename,
QDict *options, int flags)
static int raw_open(BlockDriverState *bs, QDict *options, int flags)
{
BDRVRawState *s = bs->opaque;
s->type = FTYPE_FILE;
return raw_open_common(bs, filename, flags, 0);
return raw_open_common(bs, options, flags, 0);
}
static int raw_reopen_prepare(BDRVReopenState *state,
@ -1293,11 +1324,11 @@ static int check_hdev_writable(BDRVRawState *s)
return 0;
}
static int hdev_open(BlockDriverState *bs, const char *filename,
QDict *options, int flags)
static int hdev_open(BlockDriverState *bs, QDict *options, int flags)
{
BDRVRawState *s = bs->opaque;
int ret;
const char *filename = qdict_get_str(options, "filename");
#if defined(__APPLE__) && defined(__MACH__)
if (strstart(filename, "/dev/cdrom", NULL)) {
@ -1338,7 +1369,7 @@ static int hdev_open(BlockDriverState *bs, const char *filename,
}
#endif
ret = raw_open_common(bs, filename, flags, 0);
ret = raw_open_common(bs, options, flags, 0);
if (ret < 0) {
return ret;
}
@ -1532,8 +1563,7 @@ static BlockDriver bdrv_host_device = {
};
#ifdef __linux__
static int floppy_open(BlockDriverState *bs, const char *filename,
QDict *options, int flags)
static int floppy_open(BlockDriverState *bs, QDict *options, int flags)
{
BDRVRawState *s = bs->opaque;
int ret;
@ -1541,7 +1571,7 @@ static int floppy_open(BlockDriverState *bs, const char *filename,
s->type = FTYPE_FD;
/* open will not fail even if no floppy is inserted, so add O_NONBLOCK */
ret = raw_open_common(bs, filename, flags, O_NONBLOCK);
ret = raw_open_common(bs, options, flags, O_NONBLOCK);
if (ret)
return ret;
@ -1655,15 +1685,14 @@ static BlockDriver bdrv_host_floppy = {
.bdrv_eject = floppy_eject,
};
static int cdrom_open(BlockDriverState *bs, const char *filename,
QDict *options, int flags)
static int cdrom_open(BlockDriverState *bs, QDict *options, int flags)
{
BDRVRawState *s = bs->opaque;
s->type = FTYPE_CD;
/* open will not fail even if no CD is inserted, so add O_NONBLOCK */
return raw_open_common(bs, filename, flags, O_NONBLOCK);
return raw_open_common(bs, options, flags, O_NONBLOCK);
}
static int cdrom_probe_device(const char *filename)
@ -1764,15 +1793,14 @@ static BlockDriver bdrv_host_cdrom = {
#endif /* __linux__ */
#if defined (__FreeBSD__) || defined(__FreeBSD_kernel__)
static int cdrom_open(BlockDriverState *bs, const char *filename,
QDict *options, int flags)
static int cdrom_open(BlockDriverState *bs, QDict *options, int flags)
{
BDRVRawState *s = bs->opaque;
int ret;
s->type = FTYPE_CD;
ret = raw_open_common(bs, filename, flags, 0);
ret = raw_open_common(bs, options, flags, 0);
if (ret)
return ret;

59
block/raw-win32.c
View File

@ -221,21 +221,49 @@ static void raw_parse_flags(int flags, int *access_flags, DWORD *overlapped)
}
}
static int raw_open(BlockDriverState *bs, const char *filename,
QDict *options, int flags)
static QemuOptsList raw_runtime_opts = {
.name = "raw",
.head = QTAILQ_HEAD_INITIALIZER(raw_runtime_opts.head),
.desc = {
{
.name = "filename",
.type = QEMU_OPT_STRING,
.help = "File name of the image",
},
{ /* end of list */ }
},
};
static int raw_open(BlockDriverState *bs, QDict *options, int flags)
{
BDRVRawState *s = bs->opaque;
int access_flags;
DWORD overlapped;
QemuOpts *opts;
Error *local_err = NULL;
const char *filename;
int ret;
s->type = FTYPE_FILE;
opts = qemu_opts_create_nofail(&raw_runtime_opts);
qemu_opts_absorb_qdict(opts, options, &local_err);
if (error_is_set(&local_err)) {
qerror_report_err(local_err);
error_free(local_err);
ret = -EINVAL;
goto fail;
}
filename = qemu_opt_get(opts, "filename");
raw_parse_flags(flags, &access_flags, &overlapped);
if ((flags & BDRV_O_NATIVE_AIO) && aio == NULL) {
aio = win32_aio_init();
if (aio == NULL) {
return -EINVAL;
ret = -EINVAL;
goto fail;
}
}
@ -245,20 +273,27 @@ static int raw_open(BlockDriverState *bs, const char *filename,
if (s->hfile == INVALID_HANDLE_VALUE) {
int err = GetLastError();
if (err == ERROR_ACCESS_DENIED)
return -EACCES;
return -EINVAL;
if (err == ERROR_ACCESS_DENIED) {
ret = -EACCES;
} else {
ret = -EINVAL;
}
goto fail;
}
if (flags & BDRV_O_NATIVE_AIO) {
int ret = win32_aio_attach(aio, s->hfile);
ret = win32_aio_attach(aio, s->hfile);
if (ret < 0) {
CloseHandle(s->hfile);
return ret;
goto fail;
}
s->aio = aio;
}
return 0;
ret = 0;
fail:
qemu_opts_del(opts);
return ret;
}
static BlockDriverAIOCB *raw_aio_readv(BlockDriverState *bs,
@ -495,13 +530,13 @@ static int hdev_probe_device(const char *filename)
return 0;
}
static int hdev_open(BlockDriverState *bs, const char *filename,
QDict *options, int flags)
static int hdev_open(BlockDriverState *bs, QDict *options, int flags)
{
BDRVRawState *s = bs->opaque;
int access_flags, create_flags;
DWORD overlapped;
char device_name[64];
const char *filename = qdict_get_str(options, "filename");
if (strstart(filename, "/dev/cdrom", NULL)) {
if (find_cdrom(device_name, sizeof(device_name)) < 0)

32
block/rbd.c
View File

@ -441,8 +441,21 @@ static int qemu_rbd_aio_flush_cb(void *opaque)
return (s->qemu_aio_count > 0);
}
static int qemu_rbd_open(BlockDriverState *bs, const char *filename,
QDict *options, int flags)
/* TODO Convert to fine grained options */
static QemuOptsList runtime_opts = {
.name = "rbd",
.head = QTAILQ_HEAD_INITIALIZER(runtime_opts.head),
.desc = {
{
.name = "filename",
.type = QEMU_OPT_STRING,
.help = "Specification of the rbd image",
},
{ /* end of list */ }
},
};
static int qemu_rbd_open(BlockDriverState *bs, QDict *options, int flags)
{
BDRVRBDState *s = bs->opaque;
char pool[RBD_MAX_POOL_NAME_SIZE];
@ -450,8 +463,23 @@ static int qemu_rbd_open(BlockDriverState *bs, const char *filename,
char conf[RBD_MAX_CONF_SIZE];
char clientname_buf[RBD_MAX_CONF_SIZE];
char *clientname;
QemuOpts *opts;
Error *local_err = NULL;
const char *filename;
int r;
opts = qemu_opts_create_nofail(&runtime_opts);
qemu_opts_absorb_qdict(opts, options, &local_err);
if (error_is_set(&local_err)) {
qerror_report_err(local_err);
error_free(local_err);
qemu_opts_del(opts);
return -EINVAL;
}
filename = qemu_opt_get(opts, "filename");
qemu_opts_del(opts);
if (qemu_rbd_parsename(filename, pool, sizeof(pool),
snap_buf, sizeof(snap_buf),
s->name, sizeof(s->name),

33
block/sheepdog.c
View File

@ -1126,8 +1126,21 @@ static int write_object(int fd, char *buf, uint64_t oid, int copies,
create, cache_flags);
}
static int sd_open(BlockDriverState *bs, const char *filename,
QDict *options, int flags)
/* TODO Convert to fine grained options */
static QemuOptsList runtime_opts = {
.name = "sheepdog",
.head = QTAILQ_HEAD_INITIALIZER(runtime_opts.head),
.desc = {
{
.name = "filename",
.type = QEMU_OPT_STRING,
.help = "URL to the sheepdog image",
},
{ /* end of list */ }
},
};
static int sd_open(BlockDriverState *bs, QDict *options, int flags)
{
int ret, fd;
uint32_t vid = 0;
@ -1135,6 +1148,20 @@ static int sd_open(BlockDriverState *bs, const char *filename,
char vdi[SD_MAX_VDI_LEN], tag[SD_MAX_VDI_TAG_LEN];
uint32_t snapid;
char *buf = NULL;
QemuOpts *opts;
Error *local_err = NULL;
const char *filename;
opts = qemu_opts_create_nofail(&runtime_opts);
qemu_opts_absorb_qdict(opts, options, &local_err);
if (error_is_set(&local_err)) {
qerror_report_err(local_err);
error_free(local_err);
ret = -EINVAL;
goto out;
}
filename = qemu_opt_get(opts, "filename");
QLIST_INIT(&s->inflight_aio_head);
QLIST_INIT(&s->pending_aio_head);
@ -1199,6 +1226,7 @@ static int sd_open(BlockDriverState *bs, const char *filename,
bs->total_sectors = s->inode.vdi_size / SECTOR_SIZE;
pstrcpy(s->name, sizeof(s->name), vdi);
qemu_co_mutex_init(&s->lock);
qemu_opts_del(opts);
g_free(buf);
return 0;
out:
@ -1206,6 +1234,7 @@ out:
if (s->fd >= 0) {
closesocket(s->fd);
}
qemu_opts_del(opts);
g_free(buf);
return ret;
}

3
block/ssh.c
View File

@ -608,8 +608,7 @@ static int connect_to_ssh(BDRVSSHState *s, QDict *options,
return ret;
}
static int ssh_file_open(BlockDriverState *bs, const char *filename,
QDict *options, int bdrv_flags)
static int ssh_file_open(BlockDriverState *bs, QDict *options, int bdrv_flags)
{
BDRVSSHState *s = bs->opaque;
int ret;

229
block/vvfat.c
View File

@ -1,4 +1,4 @@
/* vim:set shiftwidth=4 ts=8: */
/* vim:set shiftwidth=4 ts=4: */
/*
* QEMU Block driver for virtual VFAT (shadows a local directory)
*
@ -28,6 +28,8 @@
#include "block/block_int.h"
#include "qemu/module.h"
#include "migration/migration.h"
#include "qapi/qmp/qint.h"
#include "qapi/qmp/qbool.h"
#ifndef S_IWGRP
#define S_IWGRP 0
@ -988,11 +990,90 @@ static void vvfat_rebind(BlockDriverState *bs)
s->bs = bs;
}
static int vvfat_open(BlockDriverState *bs, const char* dirname,
QDict *options, int flags)
static QemuOptsList runtime_opts = {
.name = "vvfat",
.head = QTAILQ_HEAD_INITIALIZER(runtime_opts.head),
.desc = {
{
.name = "dir",
.type = QEMU_OPT_STRING,
.help = "Host directory to map to the vvfat device",
},
{
.name = "fat-type",
.type = QEMU_OPT_NUMBER,
.help = "FAT type (12, 16 or 32)",
},
{
.name = "floppy",
.type = QEMU_OPT_BOOL,
.help = "Create a floppy rather than a hard disk image",
},
{
.name = "rw",
.type = QEMU_OPT_BOOL,
.help = "Make the image writable",
},
{ /* end of list */ }
},
};
static void vvfat_parse_filename(const char *filename, QDict *options,
Error **errp)
{
int fat_type = 0;
bool floppy = false;
bool rw = false;
int i;
if (!strstart(filename, "fat:", NULL)) {
error_setg(errp, "File name string must start with 'fat:'");
return;
}
/* Parse options */
if (strstr(filename, ":32:")) {
fat_type = 32;
} else if (strstr(filename, ":16:")) {
fat_type = 16;
} else if (strstr(filename, ":12:")) {
fat_type = 12;
}
if (strstr(filename, ":floppy:")) {
floppy = true;
}
if (strstr(filename, ":rw:")) {
rw = true;
}
/* Get the directory name without options */
i = strrchr(filename, ':') - filename;
assert(i >= 3);
if (filename[i - 2] == ':' && qemu_isalpha(filename[i - 1])) {
/* workaround for DOS drive names */
filename += i - 1;
} else {
filename += i + 1;
}
/* Fill in the options QDict */
qdict_put(options, "dir", qstring_from_str(filename));
qdict_put(options, "fat-type", qint_from_int(fat_type));
qdict_put(options, "floppy", qbool_from_int(floppy));
qdict_put(options, "rw", qbool_from_int(rw));
}
static int vvfat_open(BlockDriverState *bs, QDict *options, int flags)
{
BDRVVVFATState *s = bs->opaque;
int i, cyls, heads, secs;
int cyls, heads, secs;
bool floppy;
const char *dirname;
QemuOpts *opts;
Error *local_err = NULL;
int ret;
#ifdef DEBUG
vvv = s;
@ -1003,6 +1084,65 @@ DLOG(if (stderr == NULL) {
setbuf(stderr, NULL);
})
opts = qemu_opts_create_nofail(&runtime_opts);
qemu_opts_absorb_qdict(opts, options, &local_err);
if (error_is_set(&local_err)) {
qerror_report_err(local_err);
error_free(local_err);
ret = -EINVAL;
goto fail;
}
dirname = qemu_opt_get(opts, "dir");
if (!dirname) {
qerror_report(ERROR_CLASS_GENERIC_ERROR, "vvfat block driver requires "
"a 'dir' option");
ret = -EINVAL;
goto fail;
}
s->fat_type = qemu_opt_get_number(opts, "fat-type", 0);
floppy = qemu_opt_get_bool(opts, "floppy", false);
if (floppy) {
/* 1.44MB or 2.88MB floppy. 2.88MB can be FAT12 (default) or FAT16. */
if (!s->fat_type) {
s->fat_type = 12;
secs = 36;
s->sectors_per_cluster = 2;
} else {
secs = s->fat_type == 12 ? 18 : 36;
s->sectors_per_cluster = 1;
}
s->first_sectors_number = 1;
cyls = 80;
heads = 2;
} else {
/* 32MB or 504MB disk*/
if (!s->fat_type) {
s->fat_type = 16;
}
cyls = s->fat_type == 12 ? 64 : 1024;
heads = 16;
secs = 63;
}
switch (s->fat_type) {
case 32:
fprintf(stderr, "Big fat greek warning: FAT32 has not been tested. "
"You are welcome to do so!\n");
break;
case 16:
case 12:
break;
default:
qerror_report(ERROR_CLASS_GENERIC_ERROR, "Valid FAT types are only "
"12, 16 and 32");
ret = -EINVAL;
goto fail;
}
s->bs = bs;
/* LATER TODO: if FAT32, adjust */
@ -1018,63 +1158,24 @@ DLOG(if (stderr == NULL) {
s->fat2 = NULL;
s->downcase_short_names = 1;
if (!strstart(dirname, "fat:", NULL))
return -1;
if (strstr(dirname, ":32:")) {
fprintf(stderr, "Big fat greek warning: FAT32 has not been tested. You are welcome to do so!\n");
s->fat_type = 32;
} else if (strstr(dirname, ":16:")) {
s->fat_type = 16;
} else if (strstr(dirname, ":12:")) {
s->fat_type = 12;
}
if (strstr(dirname, ":floppy:")) {
/* 1.44MB or 2.88MB floppy. 2.88MB can be FAT12 (default) or FAT16. */
if (!s->fat_type) {
s->fat_type = 12;
secs = 36;
s->sectors_per_cluster=2;
} else {
secs = s->fat_type == 12 ? 18 : 36;
s->sectors_per_cluster=1;
}
s->first_sectors_number = 1;
cyls = 80;
heads = 2;
} else {
/* 32MB or 504MB disk*/
if (!s->fat_type) {
s->fat_type = 16;
}
cyls = s->fat_type == 12 ? 64 : 1024;
heads = 16;
secs = 63;
}
fprintf(stderr, "vvfat %s chs %d,%d,%d\n",
dirname, cyls, heads, secs);
s->sector_count = cyls * heads * secs - (s->first_sectors_number - 1);
if (strstr(dirname, ":rw:")) {
if (enable_write_target(s))
return -1;
bs->read_only = 0;
if (qemu_opt_get_bool(opts, "rw", false)) {
if (enable_write_target(s)) {
ret = -EIO;
goto fail;
}
bs->read_only = 0;
}
i = strrchr(dirname, ':') - dirname;
assert(i >= 3);
if (dirname[i-2] == ':' && qemu_isalpha(dirname[i-1]))
/* workaround for DOS drive names */
dirname += i-1;
else
dirname += i+1;
bs->total_sectors = cyls * heads * secs;
if (init_directories(s, dirname, heads, secs)) {
return -1;
ret = -EIO;
goto fail;
}
s->sector_count = s->faked_sectors + s->sectors_per_cluster*s->cluster_count;
@ -1094,7 +1195,10 @@ DLOG(if (stderr == NULL) {
migrate_add_blocker(s->migration_blocker);
}
return 0;
ret = 0;
fail:
qemu_opts_del(opts);
return ret;
}
static inline void vvfat_close_current_file(BDRVVVFATState *s)
@ -2866,15 +2970,18 @@ static void vvfat_close(BlockDriverState *bs)
}
static BlockDriver bdrv_vvfat = {
.format_name = "vvfat",
.instance_size = sizeof(BDRVVVFATState),
.bdrv_file_open = vvfat_open,
.bdrv_rebind = vvfat_rebind,
.bdrv_read = vvfat_co_read,
.bdrv_write = vvfat_co_write,
.bdrv_close = vvfat_close,
.bdrv_co_is_allocated = vvfat_co_is_allocated,
.protocol_name = "fat",
.format_name = "vvfat",
.protocol_name = "fat",
.instance_size = sizeof(BDRVVVFATState),
.bdrv_parse_filename = vvfat_parse_filename,
.bdrv_file_open = vvfat_open,
.bdrv_close = vvfat_close,
.bdrv_rebind = vvfat_rebind,
.bdrv_read = vvfat_co_read,
.bdrv_write = vvfat_co_write,
.bdrv_co_is_allocated = vvfat_co_is_allocated,
};
static void bdrv_vvfat_init(void)

2
include/block/block.h
View File

@ -137,7 +137,7 @@ 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);
int bdrv_open_backing_file(BlockDriverState *bs, QDict *options);
int bdrv_open(BlockDriverState *bs, const char *filename, QDict *options,
int flags, BlockDriver *drv);
BlockReopenQueue *bdrv_reopen_queue(BlockReopenQueue *bs_queue,

3
include/block/block_int.h
View File

@ -87,8 +87,7 @@ struct BlockDriver {
void (*bdrv_reopen_abort)(BDRVReopenState *reopen_state);
int (*bdrv_open)(BlockDriverState *bs, QDict *options, int flags);
int (*bdrv_file_open)(BlockDriverState *bs, const char *filename,
QDict *options, int flags);
int (*bdrv_file_open)(BlockDriverState *bs, QDict *options, int flags);
int (*bdrv_read)(BlockDriverState *bs, int64_t sector_num,
uint8_t *buf, int nb_sectors);
int (*bdrv_write)(BlockDriverState *bs, int64_t sector_num,

8
qemu-img.c
View File

@ -1425,12 +1425,8 @@ static int img_convert(int argc, char **argv)
}
assert (remainder == 0);
if (n < cluster_sectors) {
memset(buf + n * 512, 0, cluster_size - n * 512);
}
if (!buffer_is_zero(buf, cluster_size)) {
ret = bdrv_write_compressed(out_bs, sector_num, buf,
cluster_sectors);
if (!buffer_is_zero(buf, n * BDRV_SECTOR_SIZE)) {
ret = bdrv_write_compressed(out_bs, sector_num, buf, n);
if (ret != 0) {
error_report("error while compressing sector %" PRId64
": %s", sector_num, strerror(-ret));

7
tests/qemu-iotests/051
View File

@ -142,6 +142,13 @@ run_qemu -drive media=cdrom,cache=writethrough
run_qemu -drive media=cdrom,cache=unsafe
run_qemu -drive media=cdrom,cache=invalid_value
echo
echo === Specifying the protocol layer ===
echo
run_qemu -drive file=$TEST_IMG,file.driver=file
run_qemu -drive file=$TEST_IMG,file.driver=qcow2
# success, all done
echo "*** done"
rm -f $seq.full

10
tests/qemu-iotests/051.out
View File

@ -159,4 +159,14 @@ qququiquit
Testing: -drive media=cdrom,cache=invalid_value
QEMU_PROG: -drive media=cdrom,cache=invalid_value: invalid cache option
=== Specifying the protocol layer ===
Testing: -drive file=TEST_DIR/t.qcow2,file.driver=file
qququiquit
Testing: -drive file=TEST_DIR/t.qcow2,file.driver=qcow2
QEMU_PROG: -drive file=TEST_DIR/t.qcow2,file.driver=qcow2: Can't use 'qcow2' as a block driver for the protocol level
QEMU_PROG: -drive file=TEST_DIR/t.qcow2,file.driver=qcow2: could not open disk image TEST_DIR/t.qcow2: Invalid argument
*** done

73
tests/qemu-iotests/053 Executable file
View File

@ -0,0 +1,73 @@
#!/bin/bash
#
# Test qemu-img convert when image length is not a multiple of cluster size
#
# Copyright (C) 2013 Red Hat, Inc.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
# creator
owner=stefanha@redhat.com
seq=`basename $0`
echo "QA output created by $seq"
here=`pwd`
tmp=/tmp/$$
status=1 # failure is the default!
_cleanup()
{
rm -f $TEST_IMG.orig
_cleanup_test_img
}
trap "_cleanup; exit \$status" 0 1 2 3 15
# get standard environment, filters and checks
. ./common.rc
. ./common.filter
_supported_fmt qcow2 qcow
_supported_proto file
_supported_os Linux
echo
echo "== Creating single sector image =="
_make_test_img 512
$QEMU_IO -c "write -P0xa 0 512" $TEST_IMG | _filter_qemu_io
mv $TEST_IMG $TEST_IMG.orig
echo
echo "== Converting the image, compressed =="
$QEMU_IMG convert -c -O $IMGFMT $TEST_IMG.orig $TEST_IMG
_check_test_img
echo
echo "== Checking compressed image virtual disk size =="
_img_info | grep '^virtual size:'
echo
echo "== Verifying the compressed image =="
$QEMU_IO -c "read -P0xa 0 512" $TEST_IMG | _filter_qemu_io
# success, all done
echo "*** done"
rm -f $seq.full
status=0

17
tests/qemu-iotests/053.out Normal file
View File

@ -0,0 +1,17 @@
QA output created by 053
== Creating single sector image ==
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=512
wrote 512/512 bytes at offset 0
512 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
== Converting the image, compressed ==
No errors were found on the image.
== Checking compressed image virtual disk size ==
virtual size: 512 (512 bytes)
== Verifying the compressed image ==
read 512/512 bytes at offset 0
512 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
*** done

2
tests/qemu-iotests/common.filter
View File

@ -155,7 +155,7 @@ _filter_qemu_io()
# replace occurrences of QEMU_PROG with "qemu"
_filter_qemu()
{
sed -e "s#$(basename $QEMU_PROG)#QEMU_PROG#g"
sed -e "s#^$(basename $QEMU_PROG):#QEMU_PROG:#"
}
# make sure this script returns success

1
tests/qemu-iotests/group
View File

@ -59,3 +59,4 @@
050 rw auto backing quick
051 rw auto
052 rw auto backing
053 rw auto