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block: Improve blk_get_attached_dev_id() docstring

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Expose the method docstring in the header, and mention
returned value must be free'd by caller.

Reported-by: Fabiano Rosas <farosas@suse.de>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20241111170333.43833-2-philmd@linaro.org>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Philippe Mathieu-Daudé 2024-11-11 18:03:32 +01:00 committed by Kevin Wolf
parent 558d8eb7f3
commit 84d388c22b
2 changed files with 15 additions and 4 deletions
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12
block/block-backend.c
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@ -1019,6 +1019,10 @@ DeviceState *blk_get_attached_dev(BlockBackend *blk)
return blk->dev;
}
/*
* The caller is responsible for releasing the value returned
* with g_free() after use.
*/
static char *blk_get_attached_dev_id_or_path(BlockBackend *blk, bool want_id)
{
DeviceState *dev = blk->dev;
@ -1033,15 +1037,15 @@ static char *blk_get_attached_dev_id_or_path(BlockBackend *blk, bool want_id)
return object_get_canonical_path(OBJECT(dev)) ?: g_strdup("");
}
/*
* Return the qdev ID, or if no ID is assigned the QOM path, of the block
* device attached to the BlockBackend.
*/
char *blk_get_attached_dev_id(BlockBackend *blk)
{
return blk_get_attached_dev_id_or_path(blk, true);
}
/*
* The caller is responsible for releasing the value returned
* with g_free() after use.
*/
static char *blk_get_attached_dev_path(BlockBackend *blk)
{
return blk_get_attached_dev_id_or_path(blk, false);

7
include/system/block-backend-io.h
View File

@ -32,6 +32,13 @@ void blk_set_allow_aio_context_change(BlockBackend *blk, bool allow);
void blk_set_disable_request_queuing(BlockBackend *blk, bool disable);
bool blk_iostatus_is_enabled(const BlockBackend *blk);
/*
* Return the qdev ID, or if no ID is assigned the QOM path,
* of the block device attached to the BlockBackend.
*
* The caller is responsible for releasing the value returned
* with g_free() after use.
*/
char *blk_get_attached_dev_id(BlockBackend *blk);
BlockAIOCB *blk_aio_pwrite_zeroes(BlockBackend *blk, int64_t offset,