could not grantpt: 2 No such file or directory

stat64("/dev/pts/0", 0xbfec3cb4)        = -1 ENOENT (No such file or directory)

#include <stdio.h>
#include <unistd.h>
#include <errno.h>
#include <fcntl.h>

int
main(int argc, char **argv)
{
    int ptyfd = open("/dev/ptmx", O_RDWR);

    if (ptyfd < 0) {
        printf("could not open /dev/ptmx: %d %s\n", errno, strerror(errno));
    } else if (grantpt(ptyfd) <0) {
        printf("could not grantpt: %d %s\n", errno, strerror(errno));
    } else {
        printf("success\n");
    }
}

mount -t devpts devpts /dev/pts