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#include <fcntl.h>
#include <stdlib.h>
#include <sys/ioctl.h>
#include <string.h>
#include <linux/types.h>
#include "../../src/os/btrfs_ioctl.h"
#include <stdio.h>
#include <errno.h>
int main(int argc, char **argv)
{
struct btrfs_ioctl_clone_range_args ca;
int dfd;
int r;
if (argc < 6) {
printf("usage: %s <srcfn> <srcoffset> <srclen> <destfn> <destoffset>\n", argv[0]);
exit(1);
}
ca.src_fd = open(argv[1], O_RDONLY);
ca.src_offset = atoi(argv[2]);
ca.src_length = atoi(argv[3]);
dfd = open(argv[4], O_WRONLY|O_CREAT);
ca.dest_offset = atoi(argv[5]);
r = ioctl(dfd, BTRFS_IOC_CLONE_RANGE, &ca);
printf("clone_range %s %lld %lld~%lld to %s %d %lld = %d %s\n",
argv[1], ca.src_fd,
ca.src_offset, ca.src_length,
argv[4], dfd,
ca.dest_offset, r, strerror(errno));
return r;
}
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