block.c (5f3777945d22248d805fb7c134e206c2d943b77b) block.c (469ef350e1a8b5715e620dbf6f6115628e5b566e)
1/*
2 * QEMU System Emulator block driver
3 *
4 * Copyright (c) 2003 Fabrice Bellard
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights

--- 1445 unchanged lines hidden (view full) ---

1454 * -ENOSPC - can't update the backing file because no space is left in the
1455 * image file header
1456 * -ENOTSUP - format driver doesn't support changing the backing file
1457 */
1458int bdrv_change_backing_file(BlockDriverState *bs,
1459 const char *backing_file, const char *backing_fmt)
1460{
1461 BlockDriver *drv = bs->drv;
1/*
2 * QEMU System Emulator block driver
3 *
4 * Copyright (c) 2003 Fabrice Bellard
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights

--- 1445 unchanged lines hidden (view full) ---

1454 * -ENOSPC - can't update the backing file because no space is left in the
1455 * image file header
1456 * -ENOTSUP - format driver doesn't support changing the backing file
1457 */
1458int bdrv_change_backing_file(BlockDriverState *bs,
1459 const char *backing_file, const char *backing_fmt)
1460{
1461 BlockDriver *drv = bs->drv;
1462 int ret;
1462
1463 /* Backing file format doesn't make sense without a backing file */
1464 if (backing_fmt && !backing_file) {
1465 return -EINVAL;
1466 }
1467
1468 if (drv->bdrv_change_backing_file != NULL) {
1463
1464 /* Backing file format doesn't make sense without a backing file */
1465 if (backing_fmt && !backing_file) {
1466 return -EINVAL;
1467 }
1468
1469 if (drv->bdrv_change_backing_file != NULL) {
1469 return drv->bdrv_change_backing_file(bs, backing_file, backing_fmt);
1470 ret = drv->bdrv_change_backing_file(bs, backing_file, backing_fmt);
1470 } else {
1471 } else {
1471 return -ENOTSUP;
1472 ret = -ENOTSUP;
1472 }
1473 }
1474
1475 if (ret == 0) {
1476 pstrcpy(bs->backing_file, sizeof(bs->backing_file), backing_file ?: "");
1477 pstrcpy(bs->backing_format, sizeof(bs->backing_format), backing_fmt ?: "");
1478 }
1479 return ret;
1473}
1474
1475static int bdrv_check_byte_request(BlockDriverState *bs, int64_t offset,
1476 size_t size)
1477{
1478 int64_t len;
1479
1480 if (!bdrv_is_inserted(bs))

--- 2751 unchanged lines hidden --- 		1480}
1481
1482static int bdrv_check_byte_request(BlockDriverState *bs, int64_t offset,
1483 size_t size)
1484{
1485 int64_t len;
1486
1487 if (!bdrv_is_inserted(bs))

--- 2751 unchanged lines hidden ---