NetBSD-5.0.2/usr.bin/eject/eject.c
/* $NetBSD: eject.c,v 1.22 2008/07/21 14:19:22 lukem Exp $ */
/*-
* Copyright (c) 1999 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Chris Jones.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/cdefs.h>
#ifndef lint
__COPYRIGHT("@(#) Copyright (c) 1999\
The NetBSD Foundation, Inc. All rights reserved.");
#endif /* not lint */
#ifndef lint
__RCSID("$NetBSD: eject.c,v 1.22 2008/07/21 14:19:22 lukem Exp $");
#endif /* not lint */
#include <sys/types.h>
#include <sys/cdio.h>
#include <sys/disklabel.h>
#include <sys/ioctl.h>
#include <sys/param.h>
#include <sys/ucred.h>
#include <sys/mount.h>
#include <sys/mtio.h>
#include <ctype.h>
#include <err.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <util.h>
struct nicknames_s {
char *name; /* The name given on the command line. */
char *devname; /* The base name of the device */
int type; /* The type of device, for determining what
* ioctl to use. */
#define TAPE 0x10
#define DISK 0x20
/* OR one of the above with one of the below: */
#define NOTLOADABLE 0x00
#define LOADABLE 0x01
#define FLOPPY 0x2
#define TYPEMASK ((int)~0x01)
} nicknames[] = {
{ "diskette", "fd", DISK | FLOPPY | NOTLOADABLE },
{ "floppy", "fd", DISK | FLOPPY | NOTLOADABLE },
{ "fd", "fd", DISK | FLOPPY | NOTLOADABLE },
{ "sd", "sd", DISK | NOTLOADABLE },
{ "cdrom", "cd", DISK | LOADABLE },
{ "cd", "cd", DISK | LOADABLE },
{ "cdr", "cd", DISK | LOADABLE },
{ "cdrw", "cd", DISK | LOADABLE },
{ "dvdrom", "cd", DISK | LOADABLE },
{ "dvd", "cd", DISK | LOADABLE },
{ "dvdr", "cd", DISK | LOADABLE },
{ "dvdrw", "cd", DISK | LOADABLE },
{ "mcd", "mcd", DISK | LOADABLE }, /* XXX Is this true? */
{ "tape", "st", TAPE | NOTLOADABLE },
{ "st", "st", TAPE | NOTLOADABLE },
{ "dat", "st", TAPE | NOTLOADABLE },
{ "exabyte", "st", TAPE | NOTLOADABLE },
};
#define MAXNICKLEN 12 /* at least enough room for the longest
* nickname */
#define MAXDEVLEN (MAXNICKLEN + 7) /* "/dev/r" ... "a" */
struct devtypes_s {
char *name;
int type;
} devtypes[] = {
{ "diskette", DISK | NOTLOADABLE },
{ "floppy", DISK | NOTLOADABLE },
{ "cdrom", DISK | LOADABLE },
{ "disk", DISK | NOTLOADABLE },
{ "tape", TAPE | NOTLOADABLE },
};
enum eject_op {
OP_EJECT, OP_LOAD, OP_LOCK, OP_UNLOCK
};
int verbose_f = 0;
int umount_f = 1;
int main(int, char *[]);
void usage(void);
char *nick2dev(char *);
char *nick2rdev(char *);
int guess_devtype(char *);
char *guess_nickname(char *);
void eject_tape(char *, enum eject_op);
void eject_disk(char *, enum eject_op);
void unmount_dev(char *);
int
main(int argc, char *argv[])
{
int ch;
int devtype = -1;
int n, i;
char *devname = NULL;
enum eject_op op = OP_EJECT;
while ((ch = getopt(argc, argv, "d:flLnt:Uv")) != -1) {
switch (ch) {
case 'd':
devname = optarg;
break;
case 'f':
umount_f = 0;
break;
case 'l':
if (op != OP_EJECT)
usage();
op = OP_LOAD;
break;
case 'L':
if (op != OP_EJECT)
usage();
op = OP_LOCK;
break;
case 'n':
for (n = 0; n < sizeof(nicknames) / sizeof(nicknames[0]);
n++) {
struct nicknames_s *np = &nicknames[n];
printf("%s -> %s\n", np->name, nick2dev(np->name));
}
return (0);
case 't':
for (i = 0; i < sizeof(devtypes) / sizeof(devtypes[0]);
i++) {
if (strcasecmp(devtypes[i].name, optarg) == 0) {
devtype = devtypes[i].type;
break;
}
}
if (devtype == -1)
errx(1, "%s: unknown device type", optarg);
break;
case 'U':
if (op != OP_EJECT)
usage();
op = OP_UNLOCK;
break;
case 'v':
verbose_f = 1;
break;
default:
usage();
/* NOTREACHED */
}
}
argc -= optind;
argv += optind;
if (devname == NULL) {
if (argc == 0) {
usage();
/* NOTREACHED */
} else
devname = argv[0];
}
if (devtype == -1)
devtype = guess_devtype(devname);
if (devtype == -1)
errx(1, "%s: unable to determine type of device",
devname);
if (verbose_f) {
printf("device type == ");
if ((devtype & TYPEMASK) == TAPE)
printf("tape\n");
else
printf("disk, floppy, or cdrom\n");
}
if (umount_f)
unmount_dev(devname);
/* XXX Tapes and disks have different ioctl's: */
if ((devtype & TYPEMASK) == TAPE)
eject_tape(devname, op);
else
eject_disk(devname, op);
if (verbose_f)
printf("done.\n");
return (0);
}
void
usage(void)
{
fprintf(stderr, "usage: eject [-fv] [-l | -L | -U] "
"[-t device-type] [-d] device\n");
fprintf(stderr, " eject -n\n");
exit(1);
}
int
guess_devtype(char *devname)
{
int n;
/* Nickname match: */
for (n = 0; n < sizeof(nicknames) / sizeof(nicknames[0]);
n++) {
if (strncasecmp(nicknames[n].name, devname,
strlen(nicknames[n].name)) == 0)
return (nicknames[n].type);
}
/*
* If we still don't know it, then try to compare vs. dev
* and rdev names that we know.
*/
/* dev first: */
for (n = 0; n < sizeof(nicknames) / sizeof(nicknames[0]); n++) {
char *name;
name = nick2dev(nicknames[n].name);
/*
* Assume that the part of the name that distinguishes the
* instance of this device begins with a 0.
*/
*(strchr(name, '0')) = '\0';
if (strncmp(name, devname, strlen(name)) == 0)
return (nicknames[n].type);
}
/* Now rdev: */
for (n = 0; n < sizeof(nicknames) / sizeof(nicknames[0]); n++) {
char *name = nick2rdev(nicknames[n].name);
*(strchr(name, '0')) = '\0';
if (strncmp(name, devname, strlen(name)) == 0)
return (nicknames[n].type);
}
/* Not found. */
return (-1);
}
/* "floppy5" -> "/dev/fd5a". Yep, this uses a static buffer. */
char *
nick2dev(char *nn)
{
int n;
static char devname[MAXDEVLEN];
int devnum = 0;
for (n = 0; n < sizeof(nicknames) / sizeof(nicknames[0]); n++) {
if (strncasecmp(nicknames[n].name, nn,
strlen(nicknames[n].name)) == 0) {
sscanf(nn, "%*[^0-9]%d", &devnum);
sprintf(devname, "/dev/%s%d", nicknames[n].devname,
devnum);
if ((nicknames[n].type & TYPEMASK) != TAPE)
strcat(devname, "a");
return (devname);
}
}
return (NULL);
}
/* "floppy5" -> "/dev/rfd5c". Static buffer. */
char *
nick2rdev(char *nn)
{
int n;
static char devname[MAXDEVLEN];
int devnum = 0;
for (n = 0; n < sizeof(nicknames) / sizeof(nicknames[0]); n++) {
if (strncasecmp(nicknames[n].name, nn,
strlen(nicknames[n].name)) == 0) {
sscanf(nn, "%*[^0-9]%d", &devnum);
sprintf(devname, "/dev/r%s%d", nicknames[n].devname,
devnum);
if ((nicknames[n].type & TYPEMASK) != TAPE) {
strcat(devname, "a");
if ((nicknames[n].type & FLOPPY) != FLOPPY)
devname[strlen(devname) - 1] += getrawpartition();
}
return (devname);
}
}
return (NULL);
}
/* Unmount all filesystems attached to dev. */
void
unmount_dev(char *name)
{
struct statvfs *mounts;
int i, nmnts, len;
char *dn;
nmnts = getmntinfo(&mounts, MNT_NOWAIT);
if (nmnts == 0) {
err(1, "getmntinfo");
}
/* Make sure we have a device name: */
dn = nick2dev(name);
if (dn == NULL)
dn = name;
/* Set len to strip off the partition name: */
len = strlen(dn);
if (!isdigit((unsigned char)dn[len - 1]))
len--;
if (!isdigit((unsigned char)dn[len - 1])) {
errx(1, "Can't figure out base name for dev name %s", dn);
}
for (i = 0; i < nmnts; i++) {
if (strncmp(mounts[i].f_mntfromname, dn, len) == 0) {
if (verbose_f)
printf("Unmounting %s from %s...\n",
mounts[i].f_mntfromname,
mounts[i].f_mntonname);
if (unmount(mounts[i].f_mntonname, 0) == -1) {
err(1, "unmount: %s", mounts[i].f_mntonname);
}
}
}
return;
}
void
eject_tape(char *name, enum eject_op op)
{
struct mtop m;
int fd;
char *dn;
dn = nick2rdev(name);
if (dn == NULL)
dn = name; /* Hope for the best. */
fd = open(dn, O_RDONLY);
if (fd == -1)
err(1, "open: %s", dn);
switch (op) {
case OP_EJECT:
if (verbose_f)
printf("Ejecting %s...\n", dn);
m.mt_op = MTOFFL;
m.mt_count = 0;
if (ioctl(fd, MTIOCTOP, &m) == -1)
err(1, "ioctl: MTIOCTOP: %s", dn);
break;
case OP_LOAD:
errx(1, "cannot load tapes");
/* NOTREACHED */
case OP_LOCK:
errx(1, "cannot lock tapes");
/* NOTREACHED */
case OP_UNLOCK:
errx(1, "cannot unlock tapes");
/* NOTREACHED */
}
close(fd);
return;
}
void
eject_disk(char *name, enum eject_op op)
{
int fd;
char *dn;
int arg;
dn = nick2rdev(name);
if (dn == NULL)
dn = name; /* Hope for the best. */
fd = open(dn, O_RDONLY);
if (fd == -1)
err(1, "open: %s", dn);
switch (op) {
case OP_LOAD:
if (verbose_f)
printf("Closing %s...\n", dn);
if (ioctl(fd, CDIOCCLOSE, NULL) == -1)
err(1, "ioctl: CDIOCCLOSE: %s", dn);
break;
case OP_EJECT:
if (verbose_f)
printf("Ejecting %s...\n", dn);
arg = 0;
if (umount_f == 0) {
/* force eject, unlock the device first */
if (ioctl(fd, DIOCLOCK, &arg) == -1)
err(1, "ioctl: DIOCLOCK: %s", dn);
arg = 1;
}
if (ioctl(fd, DIOCEJECT, &arg) == -1)
err(1, "ioctl: DIOCEJECT: %s", dn);
break;
case OP_LOCK:
if (verbose_f)
printf("Locking %s...\n", dn);
arg = 1;
if (ioctl(fd, DIOCLOCK, &arg) == -1)
err(1, "ioctl: DIOCLOCK: %s", dn);
break;
case OP_UNLOCK:
if (verbose_f)
printf("Unlocking %s...\n", dn);
arg = 0;
if (ioctl(fd, DIOCLOCK, &arg) == -1)
err(1, "ioctl: DIOCLOCK: %s", dn);
break;
}
close(fd);
return;
}