Revision be028adc
| b/block.c | ||
|---|---|---|
| 668 | 668 |
open_flags |= BDRV_O_RDWR; |
| 669 | 669 |
} |
| 670 | 670 |
|
| 671 |
bs->keep_read_only = bs->read_only = !(open_flags & BDRV_O_RDWR);
|
|
| 671 |
bs->read_only = !(open_flags & BDRV_O_RDWR); |
|
| 672 | 672 |
|
| 673 | 673 |
/* Open the image, either directly or using a protocol */ |
| 674 | 674 |
if (drv->bdrv_file_open) {
|
| ... | ... | |
| 808 | 808 |
goto unlink_and_fail; |
| 809 | 809 |
} |
| 810 | 810 |
|
| 811 |
if (flags & BDRV_O_RDWR) {
|
|
| 812 |
flags |= BDRV_O_ALLOW_RDWR; |
|
| 813 |
} |
|
| 814 |
|
|
| 815 |
bs->keep_read_only = !(flags & BDRV_O_ALLOW_RDWR); |
|
| 816 |
|
|
| 811 | 817 |
/* Open the image */ |
| 812 | 818 |
ret = bdrv_open_common(bs, filename, flags, drv); |
| 813 | 819 |
if (ret < 0) {
|
| ... | ... | |
| 837 | 843 |
bdrv_close(bs); |
| 838 | 844 |
return ret; |
| 839 | 845 |
} |
| 840 |
if (bs->is_temporary) {
|
|
| 841 |
bs->backing_hd->keep_read_only = !(flags & BDRV_O_RDWR); |
|
| 842 |
} else {
|
|
| 843 |
/* base image inherits from "parent" */ |
|
| 844 |
bs->backing_hd->keep_read_only = bs->keep_read_only; |
|
| 845 |
} |
|
| 846 | 846 |
} |
| 847 | 847 |
|
| 848 | 848 |
if (!bdrv_key_required(bs)) {
|
| b/block.h | ||
|---|---|---|
| 80 | 80 |
#define BDRV_O_COPY_ON_READ 0x0400 /* copy read backing sectors into image */ |
| 81 | 81 |
#define BDRV_O_INCOMING 0x0800 /* consistency hint for incoming migration */ |
| 82 | 82 |
#define BDRV_O_CHECK 0x1000 /* open solely for consistency check */ |
| 83 |
#define BDRV_O_ALLOW_RDWR 0x2000 /* allow reopen to change from r/o to r/w */ |
|
| 83 | 84 |
|
| 84 | 85 |
#define BDRV_O_CACHE_MASK (BDRV_O_NOCACHE | BDRV_O_CACHE_WB | BDRV_O_NO_FLUSH) |
| 85 | 86 |
|
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