#include "block/block_int.h"
#include "qemu/module.h"
#include "migration/migration.h"
-#ifdef __linux__
-#include <linux/fs.h>
-#include <sys/ioctl.h>
-#ifndef FS_NOCOW_FL
-#define FS_NOCOW_FL 0x00800000 /* Do not cow file */
-#endif
-#endif
#if defined(CONFIG_UUID)
#include <uuid/uuid.h>
return -ENOTSUP;
}
- bmap = g_malloc(s->header.blocks_in_image * sizeof(uint32_t));
+ bmap = g_try_new(uint32_t, s->header.blocks_in_image);
+ if (s->header.blocks_in_image && bmap == NULL) {
+ res->check_errors++;
+ return -ENOMEM;
+ }
+
memset(bmap, 0xff, s->header.blocks_in_image * sizeof(uint32_t));
/* Check block map and value of blocks_allocated. */
static int vdi_probe(const uint8_t *buf, int buf_size, const char *filename)
{
const VdiHeader *header = (const VdiHeader *)buf;
- int result = 0;
+ int ret = 0;
logout("\n");
if (buf_size < sizeof(*header)) {
/* Header too small, no VDI. */
} else if (le32_to_cpu(header->signature) == VDI_SIGNATURE) {
- result = 100;
+ ret = 100;
}
- if (result == 0) {
+ if (ret == 0) {
logout("no vdi image\n");
} else {
logout("%s", header->text);
}
- return result;
+ return ret;
}
static int vdi_open(BlockDriverState *bs, QDict *options, int flags,
bmap_size = header.blocks_in_image * sizeof(uint32_t);
bmap_size = (bmap_size + SECTOR_SIZE - 1) / SECTOR_SIZE;
- s->bmap = g_malloc(bmap_size * SECTOR_SIZE);
+ s->bmap = qemu_try_blockalign(bs->file, bmap_size * SECTOR_SIZE);
+ if (s->bmap == NULL) {
+ ret = -ENOMEM;
+ goto fail;
+ }
+
ret = bdrv_read(bs->file, s->bmap_sector, (uint8_t *)s->bmap, bmap_size);
if (ret < 0) {
goto fail_free_bmap;
return 0;
fail_free_bmap:
- g_free(s->bmap);
+ qemu_vfree(s->bmap);
fail:
return ret;
static int vdi_create(const char *filename, QemuOpts *opts, Error **errp)
{
- int fd;
- int result = 0;
+ int ret = 0;
uint64_t bytes = 0;
uint32_t blocks;
size_t block_size = DEFAULT_CLUSTER_SIZE;
VdiHeader header;
size_t i;
size_t bmap_size;
- bool nocow = false;
+ int64_t offset = 0;
+ Error *local_err = NULL;
+ BlockDriverState *bs = NULL;
+ uint32_t *bmap = NULL;
logout("\n");
image_type = VDI_TYPE_STATIC;
}
#endif
- nocow = qemu_opt_get_bool_del(opts, BLOCK_OPT_NOCOW, false);
if (bytes > VDI_DISK_SIZE_MAX) {
- result = -ENOTSUP;
+ ret = -ENOTSUP;
error_setg(errp, "Unsupported VDI image size (size is 0x%" PRIx64
", max supported is 0x%" PRIx64 ")",
bytes, VDI_DISK_SIZE_MAX);
goto exit;
}
- fd = qemu_open(filename,
- O_WRONLY | O_CREAT | O_TRUNC | O_BINARY | O_LARGEFILE,
- 0644);
- if (fd < 0) {
- result = -errno;
+ ret = bdrv_create_file(filename, opts, &local_err);
+ if (ret < 0) {
+ error_propagate(errp, local_err);
goto exit;
}
-
- if (nocow) {
-#ifdef __linux__
- /* Set NOCOW flag to solve performance issue on fs like btrfs.
- * This is an optimisation. The FS_IOC_SETFLAGS ioctl return value will
- * be ignored since any failure of this operation should not block the
- * left work.
- */
- int attr;
- if (ioctl(fd, FS_IOC_GETFLAGS, &attr) == 0) {
- attr |= FS_NOCOW_FL;
- ioctl(fd, FS_IOC_SETFLAGS, &attr);
- }
-#endif
+ ret = bdrv_open(&bs, filename, NULL, NULL, BDRV_O_RDWR | BDRV_O_PROTOCOL,
+ NULL, &local_err);
+ if (ret < 0) {
+ error_propagate(errp, local_err);
+ goto exit;
}
/* We need enough blocks to store the given disk size,
vdi_header_print(&header);
#endif
vdi_header_to_le(&header);
- if (write(fd, &header, sizeof(header)) < 0) {
- result = -errno;
- goto close_and_exit;
+ ret = bdrv_pwrite_sync(bs, offset, &header, sizeof(header));
+ if (ret < 0) {
+ error_setg(errp, "Error writing header to %s", filename);
+ goto exit;
}
+ offset += sizeof(header);
if (bmap_size > 0) {
- uint32_t *bmap = g_malloc0(bmap_size);
+ bmap = g_try_malloc0(bmap_size);
+ if (bmap == NULL) {
+ ret = -ENOMEM;
+ error_setg(errp, "Could not allocate bmap");
+ goto exit;
+ }
for (i = 0; i < blocks; i++) {
if (image_type == VDI_TYPE_STATIC) {
bmap[i] = i;
bmap[i] = VDI_UNALLOCATED;
}
}
- if (write(fd, bmap, bmap_size) < 0) {
- result = -errno;
- g_free(bmap);
- goto close_and_exit;
+ ret = bdrv_pwrite_sync(bs, offset, bmap, bmap_size);
+ if (ret < 0) {
+ error_setg(errp, "Error writing bmap to %s", filename);
+ goto exit;
}
- g_free(bmap);
+ offset += bmap_size;
}
if (image_type == VDI_TYPE_STATIC) {
- if (ftruncate(fd, sizeof(header) + bmap_size + blocks * block_size)) {
- result = -errno;
- goto close_and_exit;
+ ret = bdrv_truncate(bs, offset + blocks * block_size);
+ if (ret < 0) {
+ error_setg(errp, "Failed to statically allocate %s", filename);
+ goto exit;
}
}
-close_and_exit:
- if ((close(fd) < 0) && !result) {
- result = -errno;
- }
-
exit:
- return result;
+ bdrv_unref(bs);
+ g_free(bmap);
+ return ret;
}
static void vdi_close(BlockDriverState *bs)
{
BDRVVdiState *s = bs->opaque;
- g_free(s->bmap);
+ qemu_vfree(s->bmap);
migrate_del_blocker(s->migration_blocker);
error_free(s->migration_blocker);
projects / mirror_qemu.git / blobdiff