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blockjob: Add 'job_id' parameter to block_job_create()

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When a new job is created, the job ID is taken from the device name of
the BDS. This patch adds a new 'job_id' parameter to let the caller
provide one instead.

This patch also verifies that the ID is always unique and well-formed.
This causes problems in a couple of places where no ID is being set,
because the BDS does not have a device name.

In the case of test_block_job_start() (from test-blockjob-txn.c) we
can simply use this new 'job_id' parameter to set the missing ID.

In the case of img_commit() (from qemu-img.c) we still don't have the
API to make commit_active_start() set the job ID, so we solve it by
setting a default value. We'll get rid of this as soon as we extend
the API.

Signed-off-by: Alberto Garcia <berto@igalia.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Alberto Garcia 2016-07-05 17:28:56 +03:00 • committed by Kevin Wolf
parent 3ddf3efefa
commit 7f0317cfc8
7 changed files with 40 additions and 13 deletions
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8
include/block/blockjob.h
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@ -223,6 +223,8 @@ BlockJob *block_job_get(const char *id);
/**
* block_job_create:
* @job_id: The id of the newly-created job, or %NULL to have one
* generated automatically.
* @job_type: The class object for the newly-created job.
* @bs: The block
* @speed: The maximum speed, in bytes per second, or 0 for unlimited.
@ -239,9 +241,9 @@ BlockJob *block_job_get(const char *id);
* This function is not part of the public job interface; it should be
* called from a wrapper that is specific to the job type.
*/
void *block_job_create(const BlockJobDriver *driver, BlockDriverState *bs,
int64_t speed, BlockCompletionFunc *cb,
void *opaque, Error **errp);
void *block_job_create(const char *job_id, const BlockJobDriver *driver,
BlockDriverState *bs, int64_t speed,
BlockCompletionFunc *cb, void *opaque, Error **errp);
/**
* block_job_sleep_ns: