395 lines
8.6 KiB
C
395 lines
8.6 KiB
C
/*
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* Copyright (c) 1995
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* Matthieu Herrb. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed for the NetBSD Project
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* by Matthieu Herrb.
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/*
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* Eject command
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*
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* It knows to eject floppies, CD-ROMS and tapes
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* and tries to unmount file systems first
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*/
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#include <sys/param.h>
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#include <sys/ioctl.h>
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#include <sys/cdio.h>
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#include <sys/mtio.h>
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#include <sys/disklabel.h>
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#include <sys/ucred.h>
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#include <sys/mount.h>
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#include <sys/cdefs.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <err.h>
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#include <string.h>
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typedef struct DEVTAB {
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char *name;
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char *device;
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char qualifier;
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u_int type;
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} DEVTAB;
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/*
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* known device nicknames and types
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* (used for selecting the proper ioctl to eject them)
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*/
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#define FLOPPY 0x00000001
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#define CDROM 0x00000002
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#define TAPE 0x00010000
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#define MOUNTABLE(x) ((x) & 0x0000ffff)
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static DEVTAB devtab[] = {
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{ "diskette", "/dev/fd0", 'a', FLOPPY },
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{ "diskette0", "/dev/fd0", 'a', FLOPPY },
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{ "diskette1", "/dev/fd1", 'a', FLOPPY },
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{ "floppy", "/dev/fd0", 'a', FLOPPY },
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{ "floppy0", "/dev/fd0", 'a', FLOPPY },
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{ "floppy1", "/dev/fd1", 'a', FLOPPY },
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{ "fd", "/dev/fd0", 'a', FLOPPY },
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{ "fd0", "/dev/fd0", 'a', FLOPPY },
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{ "fd1", "/dev/fd1", 'a', FLOPPY },
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{ "cdrom", "/dev/cd0", 'a', CDROM },
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{ "cdrom0", "/dev/cd0", 'a', CDROM },
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{ "cdrom1", "/dev/cd1", 'a', CDROM },
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{ "cd", "/dev/cd0", 'a', CDROM },
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{ "cd0", "/dev/cd0", 'a', CDROM },
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{ "cd1", "/dev/cd1", 'a', CDROM },
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{ "mcd", "/dev/mcd0", 'a', CDROM },
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{ "mcd0", "/dev/mcd0", 'a', CDROM },
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{ "mcd1", "/dev/mcd1", 'a', CDROM },
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{ "tape", "/dev/rst0", '\0', TAPE },
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{ "tape0", "/dev/rst0", '\0', TAPE },
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{ "tape1", "/dev/rst1", '\0', TAPE },
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{ "st", "/dev/rst0", '\0', TAPE },
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{ "st0", "/dev/rst0", '\0', TAPE },
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{ "st1", "/dev/rst1", '\0', TAPE },
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{ "dat", "/dev/rst0", '\0', TAPE },
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{ "dat0", "/dev/rst0", '\0', TAPE },
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{ "dat1", "/dev/rst1", '\0', TAPE },
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{ "exabyte", "/dev/rst0", '\0', TAPE },
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{ "exabyte0", "/dev/rst0", '\0', TAPE },
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{ "exabyte1", "/dev/rst1", '\0', TAPE },
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{ NULL, NULL }
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};
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struct types {
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char *str;
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int type;
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} types[] = {
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{ "diskette", FLOPPY },
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{ "floppy", FLOPPY },
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{ "cdrom", CDROM },
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{ "tape", TAPE },
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{ NULL, 0 }
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};
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int verbose;
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/*
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* remind the syntax of the command to the user
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*/
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static void
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usage()
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{
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errx(1, "usage: eject [-n][-f][-t devtype][[-d] raw device | nickname ]");
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/*NOTREACHED*/
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}
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/*
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* given a device nick name, find its associated raw device and type
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*/
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static char *
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device_by_nickname(name, pdevtype, pqualifier)
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char *name;
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int *pdevtype;
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char *pqualifier;
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{
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int i;
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for (i = 0; devtab[i].name != NULL; i++) {
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if (strcmp(name, devtab[i].name) == 0) {
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*pdevtype = devtab[i].type;
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*pqualifier = devtab[i].qualifier;
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return devtab[i].device;
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}
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}
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*pdevtype = -1;
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return NULL;
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}
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/*
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* Given a raw device name, find its type and partition tag
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* from the name.
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*/
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static char *
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device_by_name(device, pdevtype, pqualifier)
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char *device;
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int *pdevtype;
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char *pqualifier;
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{
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int i;
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for (i = 0; devtab[i].name != NULL; i++) {
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if (strncmp(devtab[i].device, device,
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strlen(devtab[i].device)) == 0) {
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*pdevtype = devtab[i].type;
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*pqualifier = devtab[i].qualifier;
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return devtab[i].device;
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}
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}
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*pdevtype = -1;
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return NULL;
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}
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/*
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* eject a floppy
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*/
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static void
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eject_floppy(device)
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char *device;
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{
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#ifdef __i386
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printf("You may now press the eject button on the floppy drive...\n");
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return;
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#else
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int fd;
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fd = open(device, O_RDONLY);
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if (fd < 0) {
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err(1, "open %s", device);
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}
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if (ioctl(fd, DIOCEJECT, 0) < 0) {
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err(1, device);
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}
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close(fd);
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#endif
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} /* eject_floppy */
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/*
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* eject a cd
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*/
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static void
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eject_cdrom(device)
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char *device;
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{
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int fd;
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fd = open(device, O_RDONLY);
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if (fd < 0) {
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err(1, "%s: open", device);
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}
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if (ioctl(fd, CDIOCALLOW) < 0) {
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err(1, "%s: CDIOCALLOW", device);
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}
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if (ioctl(fd, CDIOCEJECT, 0) < 0) {
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err(1, "%s: CDIOCEJECT", device);
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}
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if (close(fd) != 0)
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err(1, "%s: close", device);
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} /* eject_cdrom */
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/*
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* eject a tape
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*/
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static void
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eject_tape(device)
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char *device;
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{
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int fd;
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struct mtop mt_com;
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fd = open(device, O_RDONLY);
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if (fd < 0) {
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err(1, "open %s", device);
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}
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mt_com.mt_op = MTOFFL;
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if (ioctl(fd, MTIOCTOP, &mt_com) < 0) {
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err(1, "%s: MTOFFL", device);
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}
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close(fd);
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} /* eject_tape */
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/*
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* test if partitions of a device are mounted
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* and unmount them
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*/
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static void
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umount_mounted(device)
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char *device;
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{
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struct statfs *mntbuf;
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int i, n, l;
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n = getmntinfo(&mntbuf, MNT_NOWAIT);
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if (n == 0) {
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err(1, "getmntinfo");
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}
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l = strlen(device);
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for (i = 0; i < n; i++) {
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if (strncmp(device, mntbuf[i].f_mntfromname, l) == 0) {
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if (verbose)
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printf("Unmounting: %s\n",
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mntbuf[i].f_mntonname);
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if (unmount(mntbuf[i].f_mntonname, 0) < 0) {
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err(1, "umount %s from %s",
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mntbuf[i].f_mntfromname,
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mntbuf[i].f_mntonname);
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}
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}
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}
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}
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/*
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* Eject - ejects various removable devices, including cdrom, tapes,
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* diskettes
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*/
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int
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main(argc, argv)
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int argc;
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char *argv[];
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{
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char device[MAXPATHLEN];
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char *devpath;
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char qualifier;
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int umount_flag, devtype;
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int i, ch;
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/* Default options values */
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devpath = NULL;
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devtype = -1;
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umount_flag = 1;
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while ((ch = getopt(argc, argv, "d:fnt:v")) != EOF) {
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switch (ch) {
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case 'd':
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devpath = optarg;
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break;
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case 'f':
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umount_flag = 0;
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break;
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case 'n':
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for (i = 0; devtab[i].name != NULL; i++) {
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printf("%9s => %s%c\n",
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devtab[i].name,
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devtab[i].device, devtab[i].qualifier);
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}
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return 0;
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case 't':
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for (i = 0; types[i].str != NULL; i++) {
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if (strcasecmp(optarg, types[i].str) == 0) {
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devtype = types[i].type;
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break;
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}
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}
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if (devtype == -1)
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errx(1, "%s: unknown device type", optarg);
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break;
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case 'v':
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verbose = 1;
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break;
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case '?':
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default:
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usage();
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/*NOTREACHED*/
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}
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}
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argc -= optind;
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argv += optind;
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if (devpath != NULL) {
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/* device specified with 'd' option */
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if (devtype == -1)
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device_by_name(devpath, &devtype, &qualifier);
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else
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qualifier = '\0';
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} else {
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if (argc <= 0) {
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errx(1, "No device specified");
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/* NOTREACHED */
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}
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if (strncmp(argv[0], "/dev/", 5) == 0) {
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/*
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* If argument begins with "/dev/", assume
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* a device name.
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*/
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if (devtype == -1) {
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devpath = device_by_name(argv[0],
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&devtype, &qualifier);
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} else {
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/* Device type specified; use literally */
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devpath = argv[0];
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qualifier = '\0';
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}
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} else {
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/* assume a nickname */
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devpath = device_by_nickname(argv[0],
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&devtype, &qualifier);
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}
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}
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if (devpath == NULL) {
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errx(1, "%s: unknown device", argv[0]);
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/*NOTREACHED*/
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}
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if (umount_flag && MOUNTABLE(devtype)) {
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umount_mounted(devpath);
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}
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snprintf(device, sizeof(device), "%s%c", devpath, qualifier);
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if (verbose)
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printf("Ejecting device `%s'\n", device);
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switch (devtype) {
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case FLOPPY:
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eject_floppy(device);
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break;
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case CDROM:
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eject_cdrom(device);
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break;
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case TAPE:
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eject_tape(device);
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break;
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default:
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errx(1, "impossible... devtype = %d", devtype);
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}
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exit(0);
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}
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