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block: Introduce .bdrv_parse_filename callback

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If a driver needs structured data and not just a string, it can provide
a .bdrv_parse_filename callback now that parses the command line string
into separate options. Keeping this separate from .bdrv_open_filename
ensures that the preferred way of directly specifying the options always
works as well if parsing the string works.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
This commit is contained in:
Kevin Wolf 2013-03-15 18:47:22 +01:00
parent f53a1febcd
commit 6963a30d82
3 changed files with 25 additions and 16 deletions
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include/block/block_int.h
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@ -75,6 +75,7 @@ struct BlockDriver {
int instance_size;
int (*bdrv_probe)(const uint8_t *buf, int buf_size, const char *filename);
int (*bdrv_probe_device)(const char *filename);
void (*bdrv_parse_filename)(const char *filename, QDict *options, Error **errp);
/* For handling image reopen for split or non-split files */
int (*bdrv_reopen_prepare)(BDRVReopenState *reopen_state,