test_qcow2_LDADD = \
libsystemd-internal.la \
+ libsystemd-label.la \
libsystemd-shared.la \
$(ZLIB_LIBS)
endif
#include "util.h"
#include "sparse-endian.h"
#include "qcow2-util.h"
+#include "btrfs-util.h"
#define QCOW2_MAGIC 0x514649fb
void *buffer) {
ssize_t l;
+ int r;
+
+ r = btrfs_clone_range(sfd, soffset, dfd, doffset, cluster_size);
+ if (r >= 0)
+ return r;
l = pread(sfd, buffer, cluster_size, soffset);
if (l < 0)
return 0;
}
+int btrfs_clone_range(int infd, uint64_t in_offset, int outfd, uint64_t out_offset, uint64_t sz) {
+ struct btrfs_ioctl_clone_range_args args = {
+ .src_fd = infd,
+ .src_offset = in_offset,
+ .src_length = sz,
+ .dest_offset = out_offset,
+ };
+ int r;
+
+ assert(infd >= 0);
+ assert(outfd >= 0);
+ assert(sz > 0);
+
+ r = ioctl(outfd, BTRFS_IOC_CLONE_RANGE, &args);
+ if (r < 0)
+ return -errno;
+
+ return 0;
+}
+
int btrfs_get_block_device(const char *path, dev_t *dev) {
struct btrfs_ioctl_fs_info_args fsi = {};
_cleanup_close_ int fd = -1;
int btrfs_subvol_get_quota_fd(int fd, BtrfsQuotaInfo *quota);
int btrfs_reflink(int infd, int outfd);
+int btrfs_clone_range(int infd, uint64_t in_offset, int ofd, uint64_t out_offset, uint64_t sz);
int btrfs_get_block_device(const char *path, dev_t *dev);