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#include <stdlib.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <errno.h>
#include <stdio.h>
#include <sys/ioctl.h>
#include <string.h>
#include <linux/ioctl.h>
#include <linux/types.h>
#include "../../src/os/btrfs_ioctl.h"
struct btrfs_ioctl_vol_args_v2 va;
int main(int argc, char **argv)
{
int fd;
int r;
if (argc != 3) {
printf("usage: %s <source subvol> <name>\n", argv[0]);
return 1;
}
printf("creating snap ./%s from %s\n", argv[2], argv[1]);
fd = open(".", O_RDONLY);
va.fd = open(argv[1], O_RDONLY);
va.flags = BTRFS_SUBVOL_CREATE_ASYNC;
strcpy(va.name, argv[2]);
r = ioctl(fd, BTRFS_IOC_SNAP_CREATE_V2, (unsigned long long)&va);
printf("result %d\n", r ? -errno:0);
return r;
}
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