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QEMUFileCloseFunc: add return value documentation (v2)

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qemu_fclose() and QEMUFile->close will return -errno on error, and any
positive value on success.

We need the positive non-zero success values because
migration-exec.c:exec_close() relies on non-zero return values to get
the process exit code.

Changes v1 -> v2:
 - Cosmetic spelling change on comment text

Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Eduardo Habkost 2011-11-10 10:41:40 -02:00 committed by Anthony Liguori
parent c29110d515
commit 90d8454ed0
1 changed files with 7 additions and 1 deletions
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8
hw/hw.h
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@ -27,7 +27,13 @@ typedef int (QEMUFilePutBufferFunc)(void *opaque, const uint8_t *buf,
typedef int (QEMUFileGetBufferFunc)(void *opaque, uint8_t *buf,
int64_t pos, int size);
/* Close a file and return an error code */
/* Close a file
*
* Return negative error number on error, 0 or positive value on success.
*
* The meaning of return value on success depends on the specific back-end being
* used.
*/
typedef int (QEMUFileCloseFunc)(void *opaque);
/* Called to determine if the file has exceeded it's bandwidth allocation. The