#define NOT_DONE 0x7fffffff /* used while emulated sync operation in progress */
+/* Protected by BQL */
static QTAILQ_HEAD(, BlockDriverState) graph_bdrv_states =
QTAILQ_HEAD_INITIALIZER(graph_bdrv_states);
+/* Protected by BQL */
static QTAILQ_HEAD(, BlockDriverState) all_bdrv_states =
QTAILQ_HEAD_INITIALIZER(all_bdrv_states);
+/* Protected by BQL */
static QLIST_HEAD(, BlockDriver) bdrv_drivers =
QLIST_HEAD_INITIALIZER(bdrv_drivers);
{
if (!bs || !bs->drv) {
/* page size or 4k (hdd sector size) should be on the safe side */
- return MAX(4096, qemu_real_host_page_size);
+ return MAX(4096, qemu_real_host_page_size());
}
+ IO_CODE();
return bs->bl.opt_mem_alignment;
}
{
if (!bs || !bs->drv) {
/* page size or 4k (hdd sector size) should be on the safe side */
- return MAX(4096, qemu_real_host_page_size);
+ return MAX(4096, qemu_real_host_page_size());
}
+ IO_CODE();
return bs->bl.min_mem_alignment;
}
* image is inactivated. */
bool bdrv_is_read_only(BlockDriverState *bs)
{
+ IO_CODE();
return !(bs->open_flags & BDRV_O_RDWR);
}
int bdrv_can_set_read_only(BlockDriverState *bs, bool read_only,
bool ignore_allow_rdw, Error **errp)
{
+ IO_CODE();
+
/* Do not set read_only if copy_on_read is enabled */
if (bs->copy_on_read && read_only) {
error_setg(errp, "Can't set node '%s' to r/o with copy-on-read enabled",
Error **errp)
{
int ret = 0;
+ IO_CODE();
if (!(bs->open_flags & BDRV_O_RDWR)) {
return 0;
char *bdrv_get_full_backing_filename(BlockDriverState *bs, Error **errp)
{
+ GLOBAL_STATE_CODE();
return bdrv_make_absolute_filename(bs, bs->backing_file, errp);
}
void bdrv_register(BlockDriver *bdrv)
{
assert(bdrv->format_name);
+ GLOBAL_STATE_CODE();
QLIST_INSERT_HEAD(&bdrv_drivers, bdrv, list);
}
BlockDriverState *bs;
int i;
+ GLOBAL_STATE_CODE();
+
bs = g_new0(BlockDriverState, 1);
QLIST_INIT(&bs->dirty_bitmaps);
for (i = 0; i < BLOCK_OP_TYPE_MAX; i++) {
static BlockDriver *bdrv_do_find_format(const char *format_name)
{
BlockDriver *drv1;
+ GLOBAL_STATE_CODE();
QLIST_FOREACH(drv1, &bdrv_drivers, list) {
if (!strcmp(drv1->format_name, format_name)) {
BlockDriver *drv1;
int i;
+ GLOBAL_STATE_CODE();
+
drv1 = bdrv_do_find_format(format_name);
if (drv1) {
return drv1;
int bdrv_is_whitelisted(BlockDriver *drv, bool read_only)
{
+ GLOBAL_STATE_CODE();
return bdrv_format_is_whitelisted(drv->format_name, read_only);
}
CreateCo *cco = opaque;
assert(cco->drv);
+ GLOBAL_STATE_CODE();
ret = cco->drv->bdrv_co_create_opts(cco->drv,
cco->filename, cco->opts, &local_err);
{
int ret;
+ GLOBAL_STATE_CODE();
+
Coroutine *co;
CreateCo cco = {
.drv = drv,
int64_t size;
int ret;
+ GLOBAL_STATE_CODE();
+
ret = blk_truncate(blk, minimum_size, false, PREALLOC_MODE_OFF, 0,
&local_err);
if (ret < 0 && ret != -ENOTSUP) {
* Helper function for bdrv_create_file_fallback(): Zero the first
* sector to remove any potentially pre-existing image header.
*/
-static int create_file_fallback_zero_first_sector(BlockBackend *blk,
- int64_t current_size,
- Error **errp)
+static int coroutine_fn
+create_file_fallback_zero_first_sector(BlockBackend *blk,
+ int64_t current_size,
+ Error **errp)
{
int64_t bytes_to_clear;
int ret;
+ GLOBAL_STATE_CODE();
+
bytes_to_clear = MIN(current_size, BDRV_SECTOR_SIZE);
if (bytes_to_clear) {
ret = blk_pwrite_zeroes(blk, 0, bytes_to_clear, BDRV_REQ_MAY_UNMAP);
Error *local_err = NULL;
int ret;
+ GLOBAL_STATE_CODE();
+
size = qemu_opt_get_size_del(opts, BLOCK_OPT_SIZE, 0);
buf = qemu_opt_get_del(opts, BLOCK_OPT_PREALLOC);
prealloc = qapi_enum_parse(&PreallocMode_lookup, buf,
QDict *qdict;
int ret;
+ GLOBAL_STATE_CODE();
+
drv = bdrv_find_protocol(filename, true, errp);
if (drv == NULL) {
return -ENOENT;
Error *local_err = NULL;
int ret;
+ IO_CODE();
assert(bs != NULL);
if (!bs->drv) {
{
Error *local_err = NULL;
int ret;
+ IO_CODE();
if (!bs) {
return;
{
BlockDriver *drv = bs->drv;
BlockDriverState *filtered = bdrv_filter_bs(bs);
+ GLOBAL_STATE_CODE();
if (drv && drv->bdrv_probe_blocksizes) {
return drv->bdrv_probe_blocksizes(bs, bsz);
{
BlockDriver *drv = bs->drv;
BlockDriverState *filtered = bdrv_filter_bs(bs);
+ GLOBAL_STATE_CODE();
if (drv && drv->bdrv_probe_geometry) {
return drv->bdrv_probe_geometry(bs, geo);
{
int score_max = 0, score;
BlockDriver *drv = NULL, *d;
+ GLOBAL_STATE_CODE();
QLIST_FOREACH(d, &bdrv_drivers, list) {
if (d->bdrv_probe_device) {
static BlockDriver *bdrv_do_find_protocol(const char *protocol)
{
BlockDriver *drv1;
+ GLOBAL_STATE_CODE();
QLIST_FOREACH(drv1, &bdrv_drivers, list) {
if (drv1->protocol_name && !strcmp(drv1->protocol_name, protocol)) {
const char *p;
int i;
+ GLOBAL_STATE_CODE();
/* TODO Drivers without bdrv_file_open must be specified explicitly */
/*
{
int score_max = 0, score;
BlockDriver *drv = NULL, *d;
+ IO_CODE();
QLIST_FOREACH(d, &bdrv_drivers, list) {
if (d->bdrv_probe) {
uint8_t buf[BLOCK_PROBE_BUF_SIZE];
int ret = 0;
+ GLOBAL_STATE_CODE();
+
/* Return the raw BlockDriver * to scsi-generic devices or empty drives */
if (blk_is_sg(file) || !blk_is_inserted(file) || blk_getlength(file) == 0) {
*pdrv = &bdrv_raw;
return ret;
}
- ret = blk_pread(file, 0, buf, sizeof(buf));
+ ret = blk_pread(file, 0, sizeof(buf), buf, 0);
if (ret < 0) {
error_setg_errno(errp, -ret, "Could not read image for determining its "
"format");
return ret;
}
- drv = bdrv_probe_all(buf, ret, filename);
+ drv = bdrv_probe_all(buf, sizeof(buf), filename);
if (!drv) {
error_setg(errp, "Could not determine image format: No compatible "
"driver found");
- ret = -ENOENT;
+ *pdrv = NULL;
+ return -ENOENT;
}
+
*pdrv = drv;
- return ret;
+ return 0;
}
/**
int refresh_total_sectors(BlockDriverState *bs, int64_t hint)
{
BlockDriver *drv = bs->drv;
+ IO_CODE();
if (!drv) {
return -ENOMEDIUM;
static void bdrv_join_options(BlockDriverState *bs, QDict *options,
QDict *old_options)
{
+ GLOBAL_STATE_CODE();
if (bs->drv && bs->drv->bdrv_join_options) {
bs->drv->bdrv_join_options(options, old_options);
} else {
BlockdevDetectZeroesOptions detect_zeroes =
qapi_enum_parse(&BlockdevDetectZeroesOptions_lookup, value,
BLOCKDEV_DETECT_ZEROES_OPTIONS_OFF, &local_err);
+ GLOBAL_STATE_CODE();
g_free(value);
if (local_err) {
error_propagate(errp, local_err);
static int bdrv_child_cb_inactivate(BdrvChild *child)
{
BlockDriverState *bs = child->opaque;
+ GLOBAL_STATE_CODE();
assert(bs->open_flags & BDRV_O_INACTIVE);
return 0;
}
static void bdrv_temp_snapshot_options(int *child_flags, QDict *child_options,
int parent_flags, QDict *parent_options)
{
+ GLOBAL_STATE_CODE();
*child_flags = (parent_flags & ~BDRV_O_SNAPSHOT) | BDRV_O_TEMPORARY;
/* For temporary files, unconditional cache=unsafe is fine */
BlockDriverState *parent = c->opaque;
BlockDriverState *backing_hd = c->bs;
+ GLOBAL_STATE_CODE();
assert(!parent->backing_blocker);
error_setg(&parent->backing_blocker,
"node is used as backing hd of '%s'",
{
BlockDriverState *parent = c->opaque;
+ GLOBAL_STATE_CODE();
assert(parent->backing_blocker);
bdrv_op_unblock_all(c->bs, parent->backing_blocker);
error_free(parent->backing_blocker);
BlockDriverState *parent = c->opaque;
bool read_only = bdrv_is_read_only(parent);
int ret;
+ GLOBAL_STATE_CODE();
if (read_only) {
ret = bdrv_reopen_set_read_only(parent, false, errp);
int parent_flags, QDict *parent_options)
{
int flags = parent_flags;
+ GLOBAL_STATE_CODE();
/*
* First, decide whether to set, clear, or leave BDRV_O_PROTOCOL.
{
BlockDriverState *bs = child->opaque;
+ assert_bdrv_graph_writable(bs);
QLIST_INSERT_HEAD(&bs->children, child, next);
if (child->role & BDRV_CHILD_COW) {
bdrv_unapply_subtree_drain(child, bs);
+ assert_bdrv_graph_writable(bs);
QLIST_REMOVE(child, next);
}
AioContext *child_of_bds_get_parent_aio_context(BdrvChild *c)
{
BlockDriverState *bs = c->opaque;
+ IO_CODE();
return bdrv_get_aio_context(bs);
}
AioContext *bdrv_child_get_parent_aio_context(BdrvChild *c)
{
+ GLOBAL_STATE_CODE();
return c->klass->get_parent_aio_context(c);
}
static int bdrv_open_flags(BlockDriverState *bs, int flags)
{
int open_flags = flags;
+ GLOBAL_STATE_CODE();
/*
* Clear flags that are internal to the block layer before opening the
static void update_flags_from_options(int *flags, QemuOpts *opts)
{
+ GLOBAL_STATE_CODE();
+
*flags &= ~(BDRV_O_CACHE_MASK | BDRV_O_RDWR | BDRV_O_AUTO_RDONLY);
if (qemu_opt_get_bool_del(opts, BDRV_OPT_CACHE_NO_FLUSH, false)) {
static void update_options_from_flags(QDict *options, int flags)
{
+ GLOBAL_STATE_CODE();
if (!qdict_haskey(options, BDRV_OPT_CACHE_DIRECT)) {
qdict_put_bool(options, BDRV_OPT_CACHE_DIRECT, flags & BDRV_O_NOCACHE);
}
Error **errp)
{
char *gen_node_name = NULL;
+ GLOBAL_STATE_CODE();
if (!node_name) {
node_name = gen_node_name = id_generate(ID_BLOCK);
{
Error *local_err = NULL;
int i, ret;
+ GLOBAL_STATE_CODE();
bdrv_assign_node_name(bs, node_name, &local_err);
if (local_err) {
BlockDriverState *bs;
int ret;
+ GLOBAL_STATE_CODE();
+
bs = bdrv_new();
bs->open_flags = flags;
bs->options = options ?: qdict_new();
BlockDriverState *bdrv_new_open_driver(BlockDriver *drv, const char *node_name,
int flags, Error **errp)
{
+ GLOBAL_STATE_CODE();
return bdrv_new_open_driver_opts(drv, node_name, NULL, flags, errp);
}
assert(bs->file == NULL);
assert(options != NULL && bs->options != options);
+ GLOBAL_STATE_CODE();
opts = qemu_opts_create(&bdrv_runtime_opts, NULL, 0, &error_abort);
if (!qemu_opts_absorb_qdict(opts, options, errp)) {
QObject *options_obj;
QDict *options;
int ret;
+ GLOBAL_STATE_CODE();
ret = strstart(filename, "json:", &filename);
assert(ret);
{
QDict *json_options;
Error *local_err = NULL;
+ GLOBAL_STATE_CODE();
/* Parse json: pseudo-protocol */
if (!*pfilename || !g_str_has_prefix(*pfilename, "json:")) {
BlockDriver *drv = NULL;
Error *local_err = NULL;
+ GLOBAL_STATE_CODE();
+
/*
* Caution: while qdict_get_try_str() is fine, getting non-string
* types would require more care. When @options come from
*/
bool bdrv_is_writable(BlockDriverState *bs)
{
+ IO_CODE();
return bdrv_is_writable_after_reopen(bs, NULL);
}
static char *bdrv_child_user_desc(BdrvChild *c)
{
+ GLOBAL_STATE_CODE();
return c->klass->get_parent_desc(c);
}
assert(a->bs);
assert(a->bs == b->bs);
+ GLOBAL_STATE_CODE();
if ((b->perm & a->shared_perm) == b->perm) {
return true;
static bool bdrv_parent_perms_conflict(BlockDriverState *bs, Error **errp)
{
BdrvChild *a, *b;
+ GLOBAL_STATE_CODE();
/*
* During the loop we'll look at each pair twice. That's correct because
uint64_t *nperm, uint64_t *nshared)
{
assert(bs->drv && bs->drv->bdrv_child_perm);
+ GLOBAL_STATE_CODE();
bs->drv->bdrv_child_perm(bs, c, role, reopen_queue,
parent_perm, parent_shared,
nperm, nshared);
BdrvChild *child;
g_autoptr(GHashTable) local_found = NULL;
+ GLOBAL_STATE_CODE();
+
if (!found) {
assert(!list);
found = local_found = g_hash_table_new(NULL, NULL);
{
BdrvChildSetPermState *s = opaque;
+ GLOBAL_STATE_CODE();
+
s->child->perm = s->old_perm;
s->child->shared_perm = s->old_shared_perm;
}
uint64_t shared, Transaction *tran)
{
BdrvChildSetPermState *s = g_new(BdrvChildSetPermState, 1);
+ GLOBAL_STATE_CODE();
*s = (BdrvChildSetPermState) {
.child = c,
{
BlockDriverState *bs = opaque;
uint64_t cumulative_perms, cumulative_shared_perms;
+ GLOBAL_STATE_CODE();
if (bs->drv->bdrv_set_perm) {
bdrv_get_cumulative_perm(bs, &cumulative_perms,
static void bdrv_drv_set_perm_abort(void *opaque)
{
BlockDriverState *bs = opaque;
+ GLOBAL_STATE_CODE();
if (bs->drv->bdrv_abort_perm_update) {
bs->drv->bdrv_abort_perm_update(bs);
uint64_t shared_perm, Transaction *tran,
Error **errp)
{
+ GLOBAL_STATE_CODE();
if (!bs->drv) {
return 0;
}
static void bdrv_replace_child_commit(void *opaque)
{
BdrvReplaceChildState *s = opaque;
+ GLOBAL_STATE_CODE();
if (s->free_empty_child && !s->child->bs) {
bdrv_child_free(s->child);
BdrvReplaceChildState *s = opaque;
BlockDriverState *new_bs = s->child->bs;
+ GLOBAL_STATE_CODE();
/*
* old_bs reference is transparently moved from @s to s->child.
*
BdrvChild *c;
int ret;
uint64_t cumulative_perms, cumulative_shared_perms;
+ GLOBAL_STATE_CODE();
bdrv_get_cumulative_perm(bs, &cumulative_perms, &cumulative_shared_perms);
{
int ret;
BlockDriverState *bs;
+ GLOBAL_STATE_CODE();
for ( ; list; list = list->next) {
bs = list->data;
uint64_t cumulative_perms = 0;
uint64_t cumulative_shared_perms = BLK_PERM_ALL;
+ GLOBAL_STATE_CODE();
+
QLIST_FOREACH(c, &bs->parents, next_parent) {
cumulative_perms |= c->perm;
cumulative_shared_perms &= c->shared_perm;
int ret;
Transaction *tran = tran_new();
g_autoptr(GSList) list = bdrv_topological_dfs(NULL, NULL, bs);
+ GLOBAL_STATE_CODE();
ret = bdrv_list_refresh_perms(list, NULL, tran, errp);
tran_finalize(tran, ret);
Transaction *tran = tran_new();
int ret;
+ GLOBAL_STATE_CODE();
+
bdrv_child_set_perm(c, perm, shared, tran);
ret = bdrv_refresh_perms(c->bs, &local_err);
uint64_t parent_perms, parent_shared;
uint64_t perms, shared;
+ GLOBAL_STATE_CODE();
+
bdrv_get_cumulative_perm(bs, &parent_perms, &parent_shared);
bdrv_child_perm(bs, c->bs, c, c->role, NULL,
parent_perms, parent_shared, &perms, &shared);
uint64_t perm, uint64_t shared,
uint64_t *nperm, uint64_t *nshared)
{
+ GLOBAL_STATE_CODE();
*nperm = perm & DEFAULT_PERM_PASSTHROUGH;
*nshared = (shared & DEFAULT_PERM_PASSTHROUGH) | DEFAULT_PERM_UNCHANGED;
}
uint64_t *nperm, uint64_t *nshared)
{
assert(role & BDRV_CHILD_COW);
+ GLOBAL_STATE_CODE();
/*
* We want consistent read from backing files if the parent needs it.
{
int flags;
+ GLOBAL_STATE_CODE();
assert(role & (BDRV_CHILD_METADATA | BDRV_CHILD_DATA));
flags = bdrv_reopen_get_flags(reopen_queue, bs);
uint64_t perm, uint64_t shared,
uint64_t *nperm, uint64_t *nshared)
{
+ GLOBAL_STATE_CODE();
if (role & BDRV_CHILD_FILTERED) {
assert(!(role & (BDRV_CHILD_DATA | BDRV_CHILD_METADATA |
BDRV_CHILD_COW)));
assert(!child->frozen);
assert(old_bs != new_bs);
+ GLOBAL_STATE_CODE();
if (old_bs && new_bs) {
assert(bdrv_get_aio_context(old_bs) == bdrv_get_aio_context(new_bs));
if (child->klass->detach) {
child->klass->detach(child);
}
+ assert_bdrv_graph_writable(old_bs);
QLIST_REMOVE(child, next_parent);
}
}
if (new_bs) {
+ assert_bdrv_graph_writable(new_bs);
QLIST_INSERT_HEAD(&new_bs->parents, child, next_parent);
/*
static void bdrv_child_free(BdrvChild *child)
{
assert(!child->bs);
+ GLOBAL_STATE_CODE();
assert(!child->next.le_prev); /* not in children list */
g_free(child->name);
BdrvChild *child = *s->child;
BlockDriverState *bs = child->bs;
+ GLOBAL_STATE_CODE();
/*
* Pass free_empty_child=false, because we still need the child
* for the AioContext operations on the parent below; those
assert(child);
assert(*child == NULL);
assert(child_class->get_parent_desc);
+ GLOBAL_STATE_CODE();
new_child = g_new(BdrvChild, 1);
*new_child = (BdrvChild) {
uint64_t perm, shared_perm;
assert(parent_bs->drv);
+ GLOBAL_STATE_CODE();
if (bdrv_recurse_has_child(child_bs, parent_bs)) {
error_setg(errp, "Making '%s' a %s child of '%s' would create a cycle",
{
BlockDriverState *old_bs = (*childp)->bs;
+ GLOBAL_STATE_CODE();
bdrv_replace_child_noperm(childp, NULL, true);
if (old_bs) {
BdrvChild *child = NULL;
Transaction *tran = tran_new();
+ GLOBAL_STATE_CODE();
+
ret = bdrv_attach_child_common(child_bs, child_name, child_class,
child_role, perm, shared_perm, opaque,
&child, tran, errp);
BdrvChild *child = NULL;
Transaction *tran = tran_new();
+ GLOBAL_STATE_CODE();
+
ret = bdrv_attach_child_noperm(parent_bs, child_bs, child_name, child_class,
child_role, &child, tran, errp);
if (ret < 0) {
{
BlockDriverState *child_bs;
+ GLOBAL_STATE_CODE();
+
child_bs = child->bs;
bdrv_detach_child(&child);
bdrv_unref(child_bs);
/* Callers must ensure that child->frozen is false. */
void bdrv_unref_child(BlockDriverState *parent, BdrvChild *child)
{
+ GLOBAL_STATE_CODE();
if (child == NULL) {
return;
}
static void bdrv_parent_cb_change_media(BlockDriverState *bs, bool load)
{
BdrvChild *c;
+ GLOBAL_STATE_CODE();
QLIST_FOREACH(c, &bs->parents, next_parent) {
if (c->klass->change_media) {
c->klass->change_media(c, load);
BdrvChild *child = is_backing ? parent_bs->backing : parent_bs->file;
BdrvChildRole role;
+ GLOBAL_STATE_CODE();
+
if (!parent_bs->drv) {
/*
* Node without drv is an object without a class :/. TODO: finally fix
BlockDriverState *backing_hd,
Transaction *tran, Error **errp)
{
+ GLOBAL_STATE_CODE();
return bdrv_set_file_or_backing_noperm(bs, backing_hd, true, tran, errp);
}
int ret;
Transaction *tran = tran_new();
+ GLOBAL_STATE_CODE();
+ bdrv_drained_begin(bs);
+
ret = bdrv_set_backing_noperm(bs, backing_hd, tran, errp);
if (ret < 0) {
goto out;
out:
tran_finalize(tran, ret);
+ bdrv_drained_end(bs);
+
return ret;
}
QDict *tmp_parent_options = NULL;
Error *local_err = NULL;
+ GLOBAL_STATE_CODE();
+
if (bs->backing != NULL) {
goto free_exit;
}
{
BlockDriverState *bs;
+ GLOBAL_STATE_CODE();
+
bs = bdrv_open_child_bs(filename, options, bdref_key, parent, child_class,
child_role, allow_none, errp);
if (bs == NULL) {
const char *reference = NULL;
Visitor *v = NULL;
+ GLOBAL_STATE_CODE();
+
if (ref->type == QTYPE_QSTRING) {
reference = ref->u.reference;
} else {
BlockDriverState *bs_snapshot = NULL;
int ret;
+ GLOBAL_STATE_CODE();
+
/* if snapshot, we create a temporary backing file and open it
instead of opening 'filename' directly */
assert(!child_class || !flags);
assert(!child_class == !parent);
+ GLOBAL_STATE_CODE();
if (reference) {
bool options_non_empty = options ? qdict_size(options) : false;
BlockDriverState *bdrv_open(const char *filename, const char *reference,
QDict *options, int flags, Error **errp)
{
+ GLOBAL_STATE_CODE();
+
return bdrv_open_inherit(filename, reference, options, flags, NULL,
NULL, 0, errp);
}
* important to avoid graph changes between the recursive queuing here and
* bdrv_reopen_multiple(). */
assert(bs->quiesce_counter > 0);
+ GLOBAL_STATE_CODE();
if (bs_queue == NULL) {
bs_queue = g_new0(BlockReopenQueue, 1);
BlockDriverState *bs,
QDict *options, bool keep_old_opts)
{
+ GLOBAL_STATE_CODE();
+
return bdrv_reopen_queue_child(bs_queue, bs, options, NULL, 0, false,
NULL, 0, keep_old_opts);
}
void bdrv_reopen_queue_free(BlockReopenQueue *bs_queue)
{
+ GLOBAL_STATE_CODE();
if (bs_queue) {
BlockReopenQueueEntry *bs_entry, *next;
QTAILQ_FOREACH_SAFE(bs_entry, bs_queue, entry, next) {
assert(qemu_get_current_aio_context() == qemu_get_aio_context());
assert(bs_queue != NULL);
+ GLOBAL_STATE_CODE();
QTAILQ_FOREACH(bs_entry, bs_queue, entry) {
ctx = bdrv_get_aio_context(bs_entry->state.bs);
BlockReopenQueue *queue;
int ret;
+ GLOBAL_STATE_CODE();
+
bdrv_subtree_drained_begin(bs);
if (ctx != qemu_get_aio_context()) {
aio_context_release(ctx);
{
QDict *opts = qdict_new();
+ GLOBAL_STATE_CODE();
+
qdict_put_bool(opts, BDRV_OPT_READ_ONLY, read_only);
return bdrv_reopen(bs, opts, true, errp);
QObject *value;
const char *str;
+ GLOBAL_STATE_CODE();
+
value = qdict_get(reopen_state->options, child_name);
if (value == NULL) {
return 0;
assert(reopen_state != NULL);
assert(reopen_state->bs->drv != NULL);
+ GLOBAL_STATE_CODE();
drv = reopen_state->bs->drv;
/* This function and each driver's bdrv_reopen_prepare() remove
bs = reopen_state->bs;
drv = bs->drv;
assert(drv != NULL);
+ GLOBAL_STATE_CODE();
/* If there are any driver level actions to take */
if (drv->bdrv_reopen_commit) {
assert(reopen_state != NULL);
drv = reopen_state->bs->drv;
assert(drv != NULL);
+ GLOBAL_STATE_CODE();
if (drv->bdrv_reopen_abort) {
drv->bdrv_reopen_abort(reopen_state);
BdrvAioNotifier *ban, *ban_next;
BdrvChild *child, *next;
+ GLOBAL_STATE_CODE();
assert(!bs->refcnt);
bdrv_drained_begin(bs); /* complete I/O */
void bdrv_close_all(void)
{
+ GLOBAL_STATE_CODE();
assert(job_next(NULL) == NULL);
/* Drop references from requests still in flight, such as canceled block
static void bdrv_remove_filter_or_cow_child_commit(void *opaque)
{
BdrvRemoveFilterOrCowChild *s = opaque;
-
+ GLOBAL_STATE_CODE();
bdrv_child_free(s->child);
}
BdrvChild *c, *next;
assert(to != NULL);
+ GLOBAL_STATE_CODE();
QLIST_FOREACH_SAFE(c, &from->parents, next_parent, next) {
assert(c->bs == from);
BlockDriverState *to_cow_parent = NULL;
int ret;
+ GLOBAL_STATE_CODE();
assert(to != NULL);
if (detach_subchain) {
int bdrv_replace_node(BlockDriverState *from, BlockDriverState *to,
Error **errp)
{
+ GLOBAL_STATE_CODE();
+
return bdrv_replace_node_common(from, to, true, false, errp);
}
int bdrv_drop_filter(BlockDriverState *bs, Error **errp)
{
+ GLOBAL_STATE_CODE();
+
return bdrv_replace_node_common(bs, bdrv_filter_or_cow_bs(bs), true, true,
errp);
}
int ret;
Transaction *tran = tran_new();
+ GLOBAL_STATE_CODE();
+
assert(!bs_new->backing);
ret = bdrv_attach_child_noperm(bs_new, bs_top, "backing",
g_autoptr(GSList) refresh_list = NULL;
BlockDriverState *old_bs = child->bs;
+ GLOBAL_STATE_CODE();
+
bdrv_ref(old_bs);
bdrv_drained_begin(old_bs);
bdrv_drained_begin(new_bs);
{
assert(bdrv_op_blocker_is_empty(bs));
assert(!bs->refcnt);
+ GLOBAL_STATE_CODE();
/* remove from list, if necessary */
if (bs->node_name[0] != '\0') {
node_name = qdict_get_try_str(options, "node-name");
+ GLOBAL_STATE_CODE();
+
new_node_bs = bdrv_new_open_driver_opts(drv, node_name, options, flags,
errp);
options = NULL; /* bdrv_new_open_driver() eats options */
int coroutine_fn bdrv_co_check(BlockDriverState *bs,
BdrvCheckResult *res, BdrvCheckMode fix)
{
+ IO_CODE();
if (bs->drv == NULL) {
return -ENOMEDIUM;
}
BlockDriver *drv = bs->drv;
int ret;
+ GLOBAL_STATE_CODE();
+
if (!drv) {
return -ENOMEDIUM;
}
BlockDriverState *bdrv_find_overlay(BlockDriverState *active,
BlockDriverState *bs)
{
+
+ GLOBAL_STATE_CODE();
+
bs = bdrv_skip_filters(bs);
active = bdrv_skip_filters(active);
/* Given a BDS, searches for the base layer. */
BlockDriverState *bdrv_find_base(BlockDriverState *bs)
{
+ GLOBAL_STATE_CODE();
+
return bdrv_find_overlay(bs, NULL);
}
BlockDriverState *i;
BdrvChild *child;
+ GLOBAL_STATE_CODE();
+
for (i = bs; i != base; i = child_bs(child)) {
child = bdrv_filter_or_cow_child(i);
BlockDriverState *i;
BdrvChild *child;
+ GLOBAL_STATE_CODE();
+
if (bdrv_is_backing_chain_frozen(bs, base, errp)) {
return -EPERM;
}
BlockDriverState *i;
BdrvChild *child;
+ GLOBAL_STATE_CODE();
+
for (i = bs; i != base; i = child_bs(child)) {
child = bdrv_filter_or_cow_child(i);
if (child) {
g_autoptr(GSList) updated_children = NULL;
GSList *p;
+ GLOBAL_STATE_CODE();
+
bdrv_ref(top);
bdrv_subtree_drained_begin(top);
int64_t bdrv_get_allocated_file_size(BlockDriverState *bs)
{
BlockDriver *drv = bs->drv;
+ IO_CODE();
+
if (!drv) {
return -ENOMEDIUM;
}
BlockMeasureInfo *bdrv_measure(BlockDriver *drv, QemuOpts *opts,
BlockDriverState *in_bs, Error **errp)
{
+ IO_CODE();
if (!drv->bdrv_measure) {
error_setg(errp, "Block driver '%s' does not support size measurement",
drv->format_name);
int64_t bdrv_nb_sectors(BlockDriverState *bs)
{
BlockDriver *drv = bs->drv;
+ IO_CODE();
if (!drv)
return -ENOMEDIUM;
int64_t bdrv_getlength(BlockDriverState *bs)
{
int64_t ret = bdrv_nb_sectors(bs);
+ IO_CODE();
if (ret < 0) {
return ret;
void bdrv_get_geometry(BlockDriverState *bs, uint64_t *nb_sectors_ptr)
{
int64_t nb_sectors = bdrv_nb_sectors(bs);
+ IO_CODE();
*nb_sectors_ptr = nb_sectors < 0 ? 0 : nb_sectors;
}
bool bdrv_is_sg(BlockDriverState *bs)
{
+ IO_CODE();
return bs->sg;
}
bool bdrv_supports_compressed_writes(BlockDriverState *bs)
{
BlockDriverState *filtered;
+ IO_CODE();
if (!bs->drv || !block_driver_can_compress(bs->drv)) {
return false;
const char *bdrv_get_format_name(BlockDriverState *bs)
{
+ IO_CODE();
return bs->drv ? bs->drv->format_name : NULL;
}
int i;
const char **formats = NULL;
+ GLOBAL_STATE_CODE();
+
QLIST_FOREACH(drv, &bdrv_drivers, list) {
if (drv->format_name) {
bool found = false;
BlockDriverState *bs;
assert(node_name);
+ GLOBAL_STATE_CODE();
QTAILQ_FOREACH(bs, &graph_bdrv_states, node_list) {
if (!strcmp(node_name, bs->node_name)) {
BlockDeviceInfoList *list;
BlockDriverState *bs;
+ GLOBAL_STATE_CODE();
+
list = NULL;
QTAILQ_FOREACH(bs, &graph_bdrv_states, node_list) {
BlockDeviceInfo *info = bdrv_block_device_info(NULL, bs, flat, errp);
{
BlockPermission qapi_perm;
XDbgBlockGraphEdge *edge;
+ GLOBAL_STATE_CODE();
edge = g_new0(XDbgBlockGraphEdge, 1);
BdrvChild *child;
XDbgBlockGraphConstructor *gr = xdbg_graph_new();
+ GLOBAL_STATE_CODE();
+
for (blk = blk_all_next(NULL); blk; blk = blk_all_next(blk)) {
char *allocated_name = NULL;
const char *name = blk_name(blk);
}
}
- for (job = block_job_next(NULL); job; job = block_job_next(job)) {
- GSList *el;
+ WITH_JOB_LOCK_GUARD() {
+ for (job = block_job_next_locked(NULL); job;
+ job = block_job_next_locked(job)) {
+ GSList *el;
- xdbg_graph_add_node(gr, job, X_DBG_BLOCK_GRAPH_NODE_TYPE_BLOCK_JOB,
- job->job.id);
- for (el = job->nodes; el; el = el->next) {
- xdbg_graph_add_edge(gr, job, (BdrvChild *)el->data);
+ xdbg_graph_add_node(gr, job, X_DBG_BLOCK_GRAPH_NODE_TYPE_BLOCK_JOB,
+ job->job.id);
+ for (el = job->nodes; el; el = el->next) {
+ xdbg_graph_add_edge(gr, job, (BdrvChild *)el->data);
+ }
}
}
BlockBackend *blk;
BlockDriverState *bs;
+ GLOBAL_STATE_CODE();
+
if (device) {
blk = blk_by_name(device);
* return false. If either argument is NULL, return false. */
bool bdrv_chain_contains(BlockDriverState *top, BlockDriverState *base)
{
+
+ GLOBAL_STATE_CODE();
+
while (top && top != base) {
top = bdrv_filter_or_cow_bs(top);
}
BlockDriverState *bdrv_next_node(BlockDriverState *bs)
{
+ GLOBAL_STATE_CODE();
if (!bs) {
return QTAILQ_FIRST(&graph_bdrv_states);
}
BlockDriverState *bdrv_next_all_states(BlockDriverState *bs)
{
+ GLOBAL_STATE_CODE();
if (!bs) {
return QTAILQ_FIRST(&all_bdrv_states);
}
const char *bdrv_get_node_name(const BlockDriverState *bs)
{
+ IO_CODE();
return bs->node_name;
}
{
BdrvChild *c;
const char *name;
+ IO_CODE();
/* If multiple parents have a name, just pick the first one. */
QLIST_FOREACH(c, &bs->parents, next_parent) {
/* TODO check what callers really want: bs->node_name or blk_name() */
const char *bdrv_get_device_name(const BlockDriverState *bs)
{
+ IO_CODE();
return bdrv_get_parent_name(bs) ?: "";
}
* absent, then this returns an empty (non-null) string. */
const char *bdrv_get_device_or_node_name(const BlockDriverState *bs)
{
+ IO_CODE();
return bdrv_get_parent_name(bs) ?: bs->node_name;
}
int bdrv_get_flags(BlockDriverState *bs)
{
+ IO_CODE();
return bs->open_flags;
}
int bdrv_has_zero_init_1(BlockDriverState *bs)
{
+ GLOBAL_STATE_CODE();
return 1;
}
int bdrv_has_zero_init(BlockDriverState *bs)
{
BlockDriverState *filtered;
+ GLOBAL_STATE_CODE();
if (!bs->drv) {
return 0;
bool bdrv_can_write_zeroes_with_unmap(BlockDriverState *bs)
{
+ IO_CODE();
if (!(bs->open_flags & BDRV_O_UNMAP)) {
return false;
}
void bdrv_get_backing_filename(BlockDriverState *bs,
char *filename, int filename_size)
{
+ IO_CODE();
pstrcpy(filename, filename_size, bs->backing_file);
}
{
int ret;
BlockDriver *drv = bs->drv;
+ IO_CODE();
/* if bs->drv == NULL, bs is closed, so there's nothing to do here */
if (!drv) {
return -ENOMEDIUM;
Error **errp)
{
BlockDriver *drv = bs->drv;
+ IO_CODE();
if (drv && drv->bdrv_get_specific_info) {
return drv->bdrv_get_specific_info(bs, errp);
}
BlockStatsSpecific *bdrv_get_specific_stats(BlockDriverState *bs)
{
BlockDriver *drv = bs->drv;
+ IO_CODE();
if (!drv || !drv->bdrv_get_specific_stats) {
return NULL;
}
void bdrv_debug_event(BlockDriverState *bs, BlkdebugEvent event)
{
+ IO_CODE();
if (!bs || !bs->drv || !bs->drv->bdrv_debug_event) {
return;
}
static BlockDriverState *bdrv_find_debug_node(BlockDriverState *bs)
{
+ GLOBAL_STATE_CODE();
while (bs && bs->drv && !bs->drv->bdrv_debug_breakpoint) {
bs = bdrv_primary_bs(bs);
}
int bdrv_debug_breakpoint(BlockDriverState *bs, const char *event,
const char *tag)
{
+ GLOBAL_STATE_CODE();
bs = bdrv_find_debug_node(bs);
if (bs) {
return bs->drv->bdrv_debug_breakpoint(bs, event, tag);
int bdrv_debug_remove_breakpoint(BlockDriverState *bs, const char *tag)
{
+ GLOBAL_STATE_CODE();
bs = bdrv_find_debug_node(bs);
if (bs) {
return bs->drv->bdrv_debug_remove_breakpoint(bs, tag);
int bdrv_debug_resume(BlockDriverState *bs, const char *tag)
{
+ GLOBAL_STATE_CODE();
while (bs && (!bs->drv || !bs->drv->bdrv_debug_resume)) {
bs = bdrv_primary_bs(bs);
}
bool bdrv_debug_is_suspended(BlockDriverState *bs, const char *tag)
{
+ GLOBAL_STATE_CODE();
while (bs && bs->drv && !bs->drv->bdrv_debug_is_suspended) {
bs = bdrv_primary_bs(bs);
}
BlockDriverState *retval = NULL;
BlockDriverState *bs_below;
+ GLOBAL_STATE_CODE();
+
if (!bs || !bs->drv || !backing_file) {
return NULL;
}
bdrv_init();
}
-int coroutine_fn bdrv_co_invalidate_cache(BlockDriverState *bs, Error **errp)
+int bdrv_activate(BlockDriverState *bs, Error **errp)
{
BdrvChild *child, *parent;
Error *local_err = NULL;
int ret;
BdrvDirtyBitmap *bm;
+ GLOBAL_STATE_CODE();
+
if (!bs->drv) {
return -ENOMEDIUM;
}
QLIST_FOREACH(child, &bs->children, next) {
- bdrv_co_invalidate_cache(child->bs, &local_err);
+ bdrv_activate(child->bs, &local_err);
if (local_err) {
error_propagate(errp, local_err);
return -EINVAL;
* Note that the required permissions of inactive images are always a
* subset of the permissions required after activating the image. This
* allows us to just get the permissions upfront without restricting
- * drv->bdrv_invalidate_cache().
+ * bdrv_co_invalidate_cache().
*
* It also means that in error cases, we don't have to try and revert to
* the old permissions (which is an operation that could fail, too). We can
return ret;
}
- if (bs->drv->bdrv_co_invalidate_cache) {
- bs->drv->bdrv_co_invalidate_cache(bs, &local_err);
- if (local_err) {
- bs->open_flags |= BDRV_O_INACTIVE;
- error_propagate(errp, local_err);
- return -EINVAL;
- }
+ ret = bdrv_invalidate_cache(bs, errp);
+ if (ret < 0) {
+ bs->open_flags |= BDRV_O_INACTIVE;
+ return ret;
}
FOR_EACH_DIRTY_BITMAP(bs, bm) {
return 0;
}
-void bdrv_invalidate_cache_all(Error **errp)
+int coroutine_fn bdrv_co_invalidate_cache(BlockDriverState *bs, Error **errp)
+{
+ Error *local_err = NULL;
+ IO_CODE();
+
+ assert(!(bs->open_flags & BDRV_O_INACTIVE));
+
+ if (bs->drv->bdrv_co_invalidate_cache) {
+ bs->drv->bdrv_co_invalidate_cache(bs, &local_err);
+ if (local_err) {
+ error_propagate(errp, local_err);
+ return -EINVAL;
+ }
+ }
+
+ return 0;
+}
+
+void bdrv_activate_all(Error **errp)
{
BlockDriverState *bs;
BdrvNextIterator it;
+ GLOBAL_STATE_CODE();
+
for (bs = bdrv_first(&it); bs; bs = bdrv_next(&it)) {
AioContext *aio_context = bdrv_get_aio_context(bs);
int ret;
aio_context_acquire(aio_context);
- ret = bdrv_invalidate_cache(bs, errp);
+ ret = bdrv_activate(bs, errp);
aio_context_release(aio_context);
if (ret < 0) {
bdrv_next_cleanup(&it);
static bool bdrv_has_bds_parent(BlockDriverState *bs, bool only_active)
{
BdrvChild *parent;
+ GLOBAL_STATE_CODE();
QLIST_FOREACH(parent, &bs->parents, next_parent) {
if (parent->klass->parent_is_bds) {
int ret;
uint64_t cumulative_perms, cumulative_shared_perms;
+ GLOBAL_STATE_CODE();
+
if (!bs->drv) {
return -ENOMEDIUM;
}
int ret = 0;
GSList *aio_ctxs = NULL, *ctx;
+ GLOBAL_STATE_CODE();
+
for (bs = bdrv_first(&it); bs; bs = bdrv_next(&it)) {
AioContext *aio_context = bdrv_get_aio_context(bs);
{
BlockDriver *drv = bs->drv;
BdrvChild *child;
+ IO_CODE();
if (!drv) {
return false;
void bdrv_eject(BlockDriverState *bs, bool eject_flag)
{
BlockDriver *drv = bs->drv;
+ IO_CODE();
if (drv && drv->bdrv_eject) {
drv->bdrv_eject(bs, eject_flag);
void bdrv_lock_medium(BlockDriverState *bs, bool locked)
{
BlockDriver *drv = bs->drv;
-
+ IO_CODE();
trace_bdrv_lock_medium(bs, locked);
if (drv && drv->bdrv_lock_medium) {
/* Get a reference to bs */
void bdrv_ref(BlockDriverState *bs)
{
+ GLOBAL_STATE_CODE();
bs->refcnt++;
}
* deleted. */
void bdrv_unref(BlockDriverState *bs)
{
+ GLOBAL_STATE_CODE();
if (!bs) {
return;
}
bool bdrv_op_is_blocked(BlockDriverState *bs, BlockOpType op, Error **errp)
{
BdrvOpBlocker *blocker;
+ GLOBAL_STATE_CODE();
assert((int) op >= 0 && op < BLOCK_OP_TYPE_MAX);
if (!QLIST_EMPTY(&bs->op_blockers[op])) {
blocker = QLIST_FIRST(&bs->op_blockers[op]);
void bdrv_op_block(BlockDriverState *bs, BlockOpType op, Error *reason)
{
BdrvOpBlocker *blocker;
+ GLOBAL_STATE_CODE();
assert((int) op >= 0 && op < BLOCK_OP_TYPE_MAX);
blocker = g_new0(BdrvOpBlocker, 1);
void bdrv_op_unblock(BlockDriverState *bs, BlockOpType op, Error *reason)
{
BdrvOpBlocker *blocker, *next;
+ GLOBAL_STATE_CODE();
assert((int) op >= 0 && op < BLOCK_OP_TYPE_MAX);
QLIST_FOREACH_SAFE(blocker, &bs->op_blockers[op], list, next) {
if (blocker->reason == reason) {
void bdrv_op_block_all(BlockDriverState *bs, Error *reason)
{
int i;
+ GLOBAL_STATE_CODE();
for (i = 0; i < BLOCK_OP_TYPE_MAX; i++) {
bdrv_op_block(bs, i, reason);
}
void bdrv_op_unblock_all(BlockDriverState *bs, Error *reason)
{
int i;
+ GLOBAL_STATE_CODE();
for (i = 0; i < BLOCK_OP_TYPE_MAX; i++) {
bdrv_op_unblock(bs, i, reason);
}
bool bdrv_op_blocker_is_empty(BlockDriverState *bs)
{
int i;
-
+ GLOBAL_STATE_CODE();
for (i = 0; i < BLOCK_OP_TYPE_MAX; i++) {
if (!QLIST_EMPTY(&bs->op_blockers[i])) {
return false;
Error *local_err = NULL;
int ret = 0;
+ GLOBAL_STATE_CODE();
+
/* Find driver and parse its options */
drv = bdrv_find_format(fmt);
if (!drv) {
AioContext *bdrv_get_aio_context(BlockDriverState *bs)
{
+ IO_CODE();
return bs ? bs->aio_context : qemu_get_aio_context();
}
Coroutine *self = qemu_coroutine_self();
AioContext *old_ctx = qemu_coroutine_get_aio_context(self);
AioContext *new_ctx;
+ IO_CODE();
/*
* Increase bs->in_flight to ensure that this operation is completed before
void coroutine_fn bdrv_co_leave(BlockDriverState *bs, AioContext *old_ctx)
{
+ IO_CODE();
aio_co_reschedule_self(old_ctx);
bdrv_dec_in_flight(bs);
}
void bdrv_coroutine_enter(BlockDriverState *bs, Coroutine *co)
{
+ IO_CODE();
aio_co_enter(bdrv_get_aio_context(bs), co);
}
static void bdrv_do_remove_aio_context_notifier(BdrvAioNotifier *ban)
{
+ GLOBAL_STATE_CODE();
QLIST_REMOVE(ban, list);
g_free(ban);
}
BdrvAioNotifier *baf, *baf_tmp;
assert(!bs->walking_aio_notifiers);
+ GLOBAL_STATE_CODE();
bs->walking_aio_notifiers = true;
QLIST_FOREACH_SAFE(baf, &bs->aio_notifiers, list, baf_tmp) {
if (baf->deleted) {
AioContext *new_context)
{
BdrvAioNotifier *ban, *ban_tmp;
+ GLOBAL_STATE_CODE();
if (bs->quiesce_counter) {
aio_disable_external(new_context);
BdrvChild *child, *parent;
g_assert(qemu_get_current_aio_context() == qemu_get_aio_context());
+ GLOBAL_STATE_CODE();
if (old_context == new_context) {
return;
static bool bdrv_parent_can_set_aio_context(BdrvChild *c, AioContext *ctx,
GSList **ignore, Error **errp)
{
+ GLOBAL_STATE_CODE();
if (g_slist_find(*ignore, c)) {
return true;
}
bool bdrv_child_can_set_aio_context(BdrvChild *c, AioContext *ctx,
GSList **ignore, Error **errp)
{
+ GLOBAL_STATE_CODE();
if (g_slist_find(*ignore, c)) {
return true;
}
return true;
}
+ GLOBAL_STATE_CODE();
+
QLIST_FOREACH(c, &bs->parents, next_parent) {
if (!bdrv_parent_can_set_aio_context(c, ctx, ignore, errp)) {
return false;
GSList *ignore;
bool ret;
+ GLOBAL_STATE_CODE();
+
ignore = ignore_child ? g_slist_prepend(NULL, ignore_child) : NULL;
ret = bdrv_can_set_aio_context(bs, ctx, &ignore, errp);
g_slist_free(ignore);
int bdrv_try_set_aio_context(BlockDriverState *bs, AioContext *ctx,
Error **errp)
{
+ GLOBAL_STATE_CODE();
return bdrv_child_try_set_aio_context(bs, ctx, NULL, errp);
}
.detach_aio_context = detach_aio_context,
.opaque = opaque
};
+ GLOBAL_STATE_CODE();
QLIST_INSERT_HEAD(&bs->aio_notifiers, ban, list);
}
void *opaque)
{
BdrvAioNotifier *ban, *ban_next;
+ GLOBAL_STATE_CODE();
QLIST_FOREACH_SAFE(ban, &bs->aio_notifiers, list, ban_next) {
if (ban->attached_aio_context == attached_aio_context &&
bool force,
Error **errp)
{
+ GLOBAL_STATE_CODE();
if (!bs->drv) {
error_setg(errp, "Node is ejected");
return -ENOMEDIUM;
{
BlockDriverState *filtered;
+ GLOBAL_STATE_CODE();
+
if (!bs || !bs->drv) {
return false;
}
BlockDriverState *to_replace_bs = bdrv_find_node(node_name);
AioContext *aio_context;
+ GLOBAL_STATE_CODE();
+
if (!to_replace_bs) {
error_setg(errp, "Failed to find node with node-name='%s'", node_name);
return NULL;
* would result in exactly bs->backing. */
static bool bdrv_backing_overridden(BlockDriverState *bs)
{
+ GLOBAL_STATE_CODE();
if (bs->backing) {
return strcmp(bs->auto_backing_file,
bs->backing->bs->filename);
bool generate_json_filename; /* Whether our default implementation should
fill exact_filename (false) or not (true) */
+ GLOBAL_STATE_CODE();
+
if (!drv) {
return;
}
BlockDriver *drv = bs->drv;
BlockDriverState *child_bs;
+ GLOBAL_STATE_CODE();
+
if (!drv) {
error_setg(errp, "Node '%s' is ejected", bs->node_name);
return NULL;
void bdrv_add_child(BlockDriverState *parent_bs, BlockDriverState *child_bs,
Error **errp)
{
-
+ GLOBAL_STATE_CODE();
if (!parent_bs->drv || !parent_bs->drv->bdrv_add_child) {
error_setg(errp, "The node %s does not support adding a child",
bdrv_get_device_or_node_name(parent_bs));
{
BdrvChild *tmp;
+ GLOBAL_STATE_CODE();
if (!parent_bs->drv || !parent_bs->drv->bdrv_del_child) {
error_setg(errp, "The node %s does not support removing a child",
bdrv_get_device_or_node_name(parent_bs));
BlockDriver *drv = c->bs->drv;
int ret;
+ GLOBAL_STATE_CODE();
assert(c->perm & (BLK_PERM_WRITE | BLK_PERM_WRITE_UNCHANGED));
if (!drv->bdrv_make_empty) {
*/
BdrvChild *bdrv_cow_child(BlockDriverState *bs)
{
+ IO_CODE();
+
if (!bs || !bs->drv) {
return NULL;
}
BdrvChild *bdrv_filter_child(BlockDriverState *bs)
{
BdrvChild *c;
+ IO_CODE();
if (!bs || !bs->drv) {
return NULL;
{
BdrvChild *cow_child = bdrv_cow_child(bs);
BdrvChild *filter_child = bdrv_filter_child(bs);
+ IO_CODE();
/* Filter nodes cannot have COW backing files */
assert(!(cow_child && filter_child));
BdrvChild *bdrv_primary_child(BlockDriverState *bs)
{
BdrvChild *c, *found = NULL;
+ IO_CODE();
QLIST_FOREACH(c, &bs->children, next) {
if (c->role & BDRV_CHILD_PRIMARY) {
*/
BlockDriverState *bdrv_skip_implicit_filters(BlockDriverState *bs)
{
+ GLOBAL_STATE_CODE();
return bdrv_do_skip_filters(bs, true);
}
*/
BlockDriverState *bdrv_skip_filters(BlockDriverState *bs)
{
+ IO_CODE();
return bdrv_do_skip_filters(bs, false);
}
*/
BlockDriverState *bdrv_backing_chain_next(BlockDriverState *bs)
{
+ IO_CODE();
return bdrv_skip_filters(bdrv_cow_bs(bdrv_skip_filters(bs)));
}
*/
bool bdrv_bsc_is_data(BlockDriverState *bs, int64_t offset, int64_t *pnum)
{
+ IO_CODE();
RCU_READ_LOCK_GUARD();
-
return bdrv_bsc_range_overlaps_locked(bs, offset, 1, pnum);
}
void bdrv_bsc_invalidate_range(BlockDriverState *bs,
int64_t offset, int64_t bytes)
{
+ IO_CODE();
RCU_READ_LOCK_GUARD();
if (bdrv_bsc_range_overlaps_locked(bs, offset, bytes, NULL)) {
{
BdrvBlockStatusCache *new_bsc = g_new(BdrvBlockStatusCache, 1);
BdrvBlockStatusCache *old_bsc;
+ IO_CODE();
*new_bsc = (BdrvBlockStatusCache) {
.valid = true,
projects / mirror_qemu.git / blobdiff