Revision 3f4cb3d3 block-cow.c
| b/block-cow.c | ||
|---|---|---|
| 95 | 95 |
|
| 96 | 96 |
/* mmap the bitmap */ |
| 97 | 97 |
s->cow_bitmap_size = ((bs->total_sectors + 7) >> 3) + sizeof(cow_header); |
| 98 |
s->cow_bitmap_addr = mmap(get_mmap_addr(s->cow_bitmap_size), |
|
| 99 |
s->cow_bitmap_size, |
|
| 100 |
PROT_READ | PROT_WRITE, |
|
| 101 |
MAP_SHARED, s->fd, 0); |
|
| 98 |
s->cow_bitmap_addr = (void *)mmap(get_mmap_addr(s->cow_bitmap_size),
|
|
| 99 |
s->cow_bitmap_size,
|
|
| 100 |
PROT_READ | PROT_WRITE,
|
|
| 101 |
MAP_SHARED, s->fd, 0);
|
|
| 102 | 102 |
if (s->cow_bitmap_addr == MAP_FAILED) |
| 103 | 103 |
goto fail; |
| 104 | 104 |
s->cow_bitmap = s->cow_bitmap_addr + sizeof(cow_header); |
| ... | ... | |
| 197 | 197 |
static void cow_close(BlockDriverState *bs) |
| 198 | 198 |
{
|
| 199 | 199 |
BDRVCowState *s = bs->opaque; |
| 200 |
munmap(s->cow_bitmap_addr, s->cow_bitmap_size); |
|
| 200 |
munmap((void *)s->cow_bitmap_addr, s->cow_bitmap_size);
|
|
| 201 | 201 |
close(s->fd); |
| 202 | 202 |
} |
| 203 | 203 |
|
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