block.c (497a30dbb065937d67f6c43af6dd78492e1d6f6d) block.c (ab5b522879e2a7880418cbd29340675e5427572f)
1/*
2 * QEMU System Emulator block driver
3 *
4 * Copyright (c) 2003 Fabrice Bellard
5 * Copyright (c) 2020 Virtuozzo International GmbH.
6 *
7 * Permission is hereby granted, free of charge, to any person obtaining a copy
8 * of this software and associated documentation files (the "Software"), to deal

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4090BlockReopenQueue *bdrv_reopen_queue(BlockReopenQueue *bs_queue,
4091 BlockDriverState *bs,
4092 QDict *options, bool keep_old_opts)
4093{
4094 return bdrv_reopen_queue_child(bs_queue, bs, options, NULL, 0, false,
4095 NULL, 0, keep_old_opts);
4096}
4097
1/*
2 * QEMU System Emulator block driver
3 *
4 * Copyright (c) 2003 Fabrice Bellard
5 * Copyright (c) 2020 Virtuozzo International GmbH.
6 *
7 * Permission is hereby granted, free of charge, to any person obtaining a copy
8 * of this software and associated documentation files (the "Software"), to deal

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4090BlockReopenQueue *bdrv_reopen_queue(BlockReopenQueue *bs_queue,
4091 BlockDriverState *bs,
4092 QDict *options, bool keep_old_opts)
4093{
4094 return bdrv_reopen_queue_child(bs_queue, bs, options, NULL, 0, false,
4095 NULL, 0, keep_old_opts);
4096}
4097
4098void bdrv_reopen_queue_free(BlockReopenQueue *bs_queue)
4099{
4100 if (bs_queue) {
4101 BlockReopenQueueEntry *bs_entry, *next;
4102 QTAILQ_FOREACH_SAFE(bs_entry, bs_queue, entry, next) {
4103 qobject_unref(bs_entry->state.explicit_options);
4104 qobject_unref(bs_entry->state.options);
4105 g_free(bs_entry);
4106 }
4107 g_free(bs_queue);
4108 }
4109}
4110
4098/*
4099 * Reopen multiple BlockDriverStates atomically & transactionally.
4100 *
4101 * The queue passed in (bs_queue) must have been built up previous
4102 * via bdrv_reopen_queue().
4103 *
4104 * Reopens all BDS specified in the queue, with the appropriate
4105 * flags. All devices are prepared for reopen, and failure of any

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4192 goto cleanup;
4193
4194abort:
4195 tran_abort(tran);
4196 QTAILQ_FOREACH_SAFE(bs_entry, bs_queue, entry, next) {
4197 if (bs_entry->prepared) {
4198 bdrv_reopen_abort(&bs_entry->state);
4199 }
4111/*
4112 * Reopen multiple BlockDriverStates atomically & transactionally.
4113 *
4114 * The queue passed in (bs_queue) must have been built up previous
4115 * via bdrv_reopen_queue().
4116 *
4117 * Reopens all BDS specified in the queue, with the appropriate
4118 * flags. All devices are prepared for reopen, and failure of any

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4205 goto cleanup;
4206
4207abort:
4208 tran_abort(tran);
4209 QTAILQ_FOREACH_SAFE(bs_entry, bs_queue, entry, next) {
4210 if (bs_entry->prepared) {
4211 bdrv_reopen_abort(&bs_entry->state);
4212 }
4200 qobject_unref(bs_entry->state.explicit_options);
4201 qobject_unref(bs_entry->state.options);
4202 }
4203
4204cleanup:
4213 }
4214
4215cleanup:
4205 QTAILQ_FOREACH_SAFE(bs_entry, bs_queue, entry, next) {
4206 g_free(bs_entry);
4207 }
4208 g_free(bs_queue);
4216 bdrv_reopen_queue_free(bs_queue);
4209
4210 return ret;
4211}
4212
4213int bdrv_reopen_set_read_only(BlockDriverState *bs, bool read_only,
4214 Error **errp)
4215{
4216 int ret;

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4568 /* If there are any driver level actions to take */
4569 if (drv->bdrv_reopen_commit) {
4570 drv->bdrv_reopen_commit(reopen_state);
4571 }
4572
4573 /* set BDS specific flags now */
4574 qobject_unref(bs->explicit_options);
4575 qobject_unref(bs->options);
4217
4218 return ret;
4219}
4220
4221int bdrv_reopen_set_read_only(BlockDriverState *bs, bool read_only,
4222 Error **errp)
4223{
4224 int ret;

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4576 /* If there are any driver level actions to take */
4577 if (drv->bdrv_reopen_commit) {
4578 drv->bdrv_reopen_commit(reopen_state);
4579 }
4580
4581 /* set BDS specific flags now */
4582 qobject_unref(bs->explicit_options);
4583 qobject_unref(bs->options);
4584 qobject_ref(reopen_state->explicit_options);
4585 qobject_ref(reopen_state->options);
4576
4577 bs->explicit_options = reopen_state->explicit_options;
4578 bs->options = reopen_state->options;
4579 bs->open_flags = reopen_state->flags;
4580 bs->detect_zeroes = reopen_state->detect_zeroes;
4581
4582 /* Remove child references from bs->options and bs->explicit_options.
4583 * Child options were already removed in bdrv_reopen_queue_child() */

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4587 bs->explicit_options = reopen_state->explicit_options;
4588 bs->options = reopen_state->options;
4589 bs->open_flags = reopen_state->flags;
4590 bs->detect_zeroes = reopen_state->detect_zeroes;
4591
4592 /* Remove child references from bs->options and bs->explicit_options.
4593 * Child options were already removed in bdrv_reopen_queue_child() */

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