xfs_extent.c

#include <fcntl.h>
#include <sys/types.h>
#include <unistd.h>
#include <sys/stat.h>
#include <string.h>
#include <xfs/xfs.h>

int 
main(void)
{
        int fd;
        const char *fname = "test_xfs";
        struct fsxattr fsx;

        memset(&fsx, 0, sizeof(fsx));
        fsx.fsx_extsize = 65536;

        fd = open(fname, O_CREAT | O_TRUNC | O_WRONLY, 00644);
        return (xfsctl(fname, fd, XFS_IOC_FSSETXATTR, &fsx) == -1);
}