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savevm: add comments for qemu_file_get_error()

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Add comments for qemu_file_get_error(), as its return value
is not very clear.

Signed-off-by: Lei Li <lilei@linux.vnet.ibm.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
This commit is contained in:
Lei Li 2013-09-04 17:02:34 +08:00 committed by Juan Quintela
parent f828a4c8fa
commit 675fd0a7da
1 changed files with 7 additions and 0 deletions
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savevm.c
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@ -566,6 +566,13 @@ QEMUFile *qemu_fopen_ops(void *opaque, const QEMUFileOps *ops)
return f;
}
/*
* Get last error for stream f
*
* Return negative error value if there has been an error on previous
* operations, return 0 if no error happened.
*
*/
int qemu_file_get_error(QEMUFile *f)
{
return f->last_error;