source: trunk/minix/commands/simple/eject.c@ 9

/*      eject 1.3 - Eject removable media               Author: Kees J. Bot
 *                                                              11 Dec 1993
 */
#define nil 0
#include <sys/types.h>
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <fcntl.h>
#include <string.h>
#include <sys/ioctl.h>

void fatal(char *label)
{
        fprintf(stderr, "eject: %s: %s\n", label, strerror(errno));
        exit(1);
}

void main(int argc, char **argv)
{
        char *device;
        int fd;

        if (argc != 2) {
                fprintf(stderr, "Usage: eject <device>\n");
                exit(1);
        }

        device= argv[1];

        /* Try to open it in whatever mode. */
        fd= open(device, O_RDONLY);
        if (fd < 0 && errno == EACCES) fd= open(device, O_WRONLY);
        if (fd < 0) fatal(device);

        /* Tell it to eject. */
        if (ioctl(fd, DIOCEJECT, nil) < 0) fatal(device);
        exit(0);
}