Revision 2c8d9f06 nbd.c
| b/nbd.c | ||
|---|---|---|
| 89 | 89 |
}; |
| 90 | 90 |
|
| 91 | 91 |
struct NBDExport {
|
| 92 |
int refcount; |
|
| 92 | 93 |
BlockDriverState *bs; |
| 93 | 94 |
off_t dev_offset; |
| 94 | 95 |
off_t size; |
| ... | ... | |
| 664 | 665 |
qemu_set_fd_handler2(client->sock, NULL, NULL, NULL, NULL); |
| 665 | 666 |
close(client->sock); |
| 666 | 667 |
client->sock = -1; |
| 668 |
nbd_export_put(client->exp); |
|
| 667 | 669 |
g_free(client); |
| 668 | 670 |
} |
| 669 | 671 |
} |
| ... | ... | |
| 722 | 724 |
{
|
| 723 | 725 |
NBDExport *exp = g_malloc0(sizeof(NBDExport)); |
| 724 | 726 |
QSIMPLEQ_INIT(&exp->requests); |
| 727 |
exp->refcount = 1; |
|
| 725 | 728 |
exp->bs = bs; |
| 726 | 729 |
exp->dev_offset = dev_offset; |
| 727 | 730 |
exp->nbdflags = nbdflags; |
| ... | ... | |
| 731 | 734 |
|
| 732 | 735 |
void nbd_export_close(NBDExport *exp) |
| 733 | 736 |
{
|
| 734 |
while (!QSIMPLEQ_EMPTY(&exp->requests)) {
|
|
| 735 |
NBDRequest *first = QSIMPLEQ_FIRST(&exp->requests); |
|
| 736 |
QSIMPLEQ_REMOVE_HEAD(&exp->requests, entry); |
|
| 737 |
qemu_vfree(first->data); |
|
| 738 |
g_free(first); |
|
| 737 |
assert(exp->refcount == 1); |
|
| 738 |
|
|
| 739 |
/* stub */ |
|
| 740 |
} |
|
| 741 |
|
|
| 742 |
void nbd_export_get(NBDExport *exp) |
|
| 743 |
{
|
|
| 744 |
assert(exp->refcount > 0); |
|
| 745 |
exp->refcount++; |
|
| 746 |
} |
|
| 747 |
|
|
| 748 |
void nbd_export_put(NBDExport *exp) |
|
| 749 |
{
|
|
| 750 |
assert(exp->refcount > 0); |
|
| 751 |
if (exp->refcount == 1) {
|
|
| 752 |
nbd_export_close(exp); |
|
| 739 | 753 |
} |
| 740 | 754 |
|
| 741 |
g_free(exp); |
|
| 755 |
if (--exp->refcount == 0) {
|
|
| 756 |
while (!QSIMPLEQ_EMPTY(&exp->requests)) {
|
|
| 757 |
NBDRequest *first = QSIMPLEQ_FIRST(&exp->requests); |
|
| 758 |
QSIMPLEQ_REMOVE_HEAD(&exp->requests, entry); |
|
| 759 |
qemu_vfree(first->data); |
|
| 760 |
g_free(first); |
|
| 761 |
} |
|
| 762 |
|
|
| 763 |
g_free(exp); |
|
| 764 |
} |
|
| 742 | 765 |
} |
| 743 | 766 |
|
| 744 | 767 |
static int nbd_can_read(void *opaque); |
| ... | ... | |
| 1011 | 1034 |
client->close = close; |
| 1012 | 1035 |
qemu_co_mutex_init(&client->send_lock); |
| 1013 | 1036 |
qemu_set_fd_handler2(csock, nbd_can_read, nbd_read, NULL, client); |
| 1037 |
|
|
| 1038 |
nbd_export_get(exp); |
|
| 1014 | 1039 |
return client; |
| 1015 | 1040 |
} |
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