Adding upstream version 2.38.1.upstream/2.38.1upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 1056 insertions, 0 deletions

diff --git a/sys-utils/eject.c b/sys-utils/eject.c
new file mode 100644
index 0000000..5cd0bea
--- /dev/null
+++ b/sys-utils/eject.c
@@ -0,0 +1,1056 @@
+/*
+ * Copyright (C) 1994-2005 Jeff Tranter (tranter@pobox.com)
+ * Copyright (C) 2012 Karel Zak <kzak@redhat.com>
+ * Copyright (C) Michal Luscon <mluscon@redhat.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include <unistd.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <fcntl.h>
+#include <limits.h>
+#include <err.h>
+#include <stdarg.h>
+
+#include <getopt.h>
+#include <errno.h>
+#include <regex.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/ioctl.h>
+#include <sys/wait.h>
+#include <sys/mtio.h>
+#include <linux/cdrom.h>
+#include <linux/fd.h>
+#include <sys/mount.h>
+#include <scsi/scsi.h>
+#include <scsi/sg.h>
+#include <scsi/scsi_ioctl.h>
+#include <sys/time.h>
+
+#include <libmount.h>
+
+#include "c.h"
+#include "closestream.h"
+#include "nls.h"
+#include "strutils.h"
+#include "xalloc.h"
+#include "pathnames.h"
+#include "sysfs.h"
+#include "monotonic.h"
+
+/*
+ * sg_io_hdr_t driver_status -- see kernel include/scsi/scsi.h
+ */
+#ifndef DRIVER_SENSE
+# define DRIVER_SENSE	0x08
+#endif
+
+
+#define EJECT_DEFAULT_DEVICE "/dev/cdrom"
+
+
+/* Used by the toggle_tray() function. If ejecting the tray takes this
+ * time or less, the tray was probably already ejected, so we close it
+ * again.
+ */
+#define TRAY_WAS_ALREADY_OPEN_USECS  200000	/* about 0.2 seconds */
+
+struct eject_control {
+	struct libmnt_table *mtab;
+	char *device;			/* device or mount point to be ejected */
+	int fd;				/* file descriptor for device */
+	unsigned int 			/* command flags and arguments */
+		a_option:1,
+		c_option:1,
+		d_option:1,
+		F_option:1,
+		f_option:1,
+		i_option:1,
+		M_option:1,
+		m_option:1,
+		n_option:1,
+		p_option:1,
+		q_option:1,
+		r_option:1,
+		s_option:1,
+		T_option:1,
+		t_option:1,
+		v_option:1,
+		X_option:1,
+		x_option:1,
+		a_arg:1,
+		i_arg:1;
+
+	unsigned int force_exclusive;	/* use O_EXCL */
+
+	long int c_arg;			/* changer slot number */
+	long int x_arg;			/* cd speed */
+};
+
+static void vinfo(const char *fmt, va_list va)
+{
+	fprintf(stdout, "%s: ", program_invocation_short_name);
+	vprintf(fmt, va);
+	fputc('\n', stdout);
+}
+
+static inline void __attribute__ ((__format__ (__printf__, 2, 3)))
+	verbose(const struct eject_control *ctl, const char *fmt, ...)
+{
+	va_list va;
+
+	if (!ctl->v_option)
+		return;
+
+	va_start(va, fmt);
+	vinfo(fmt, va);
+	va_end(va);
+}
+
+static inline __attribute__ ((__format__ (__printf__, 1, 2)))
+	void info(const char *fmt, ...)
+{
+	va_list va;
+	va_start(va, fmt);
+	vinfo(fmt, va);
+	va_end(va);
+}
+
+static void __attribute__((__noreturn__)) usage(void)
+{
+	FILE *out = stdout;
+	fputs(USAGE_HEADER, out);
+	fprintf(out,
+		_(" %s [options] [<device>|<mountpoint>]\n"), program_invocation_short_name);
+
+	fputs(USAGE_SEPARATOR, out);
+	fputs(_("Eject removable media.\n"), out);
+
+	fputs(USAGE_OPTIONS, out);
+	fputs(_(" -a, --auto <on|off>         turn auto-eject feature on or off\n"
+		" -c, --changerslot <slot>    switch discs on a CD-ROM changer\n"
+		" -d, --default               display default device\n"
+		" -f, --floppy                eject floppy\n"
+		" -F, --force                 don't care about device type\n"
+		" -i, --manualeject <on|off>  toggle manual eject protection on/off\n"
+		" -m, --no-unmount            do not unmount device even if it is mounted\n"
+		" -M, --no-partitions-unmount do not unmount another partitions\n"
+		" -n, --noop                  don't eject, just show device found\n"
+		" -p, --proc                  use /proc/mounts instead of /etc/mtab\n"
+		" -q, --tape                  eject tape\n"
+		" -r, --cdrom                 eject CD-ROM\n"
+		" -s, --scsi                  eject SCSI device\n"
+		" -t, --trayclose             close tray\n"
+		" -T, --traytoggle            toggle tray\n"
+		" -v, --verbose               enable verbose output\n"
+		" -x, --cdspeed <speed>       set CD-ROM max speed\n"
+		" -X, --listspeed             list CD-ROM available speeds\n"),
+		out);
+
+	fputs(USAGE_SEPARATOR, out);
+	printf(USAGE_HELP_OPTIONS(29));
+
+	fputs(_("\nBy default tries -r, -s, -f, and -q in order until success.\n"), out);
+	printf(USAGE_MAN_TAIL("eject(1)"));
+
+	exit(EXIT_SUCCESS);
+}
+
+
+/* Handle command line options. */
+static void parse_args(struct eject_control *ctl, int argc, char **argv)
+{
+	static const struct option long_opts[] =
+	{
+		{"auto",	required_argument, NULL, 'a'},
+		{"cdrom",	no_argument,	   NULL, 'r'},
+		{"cdspeed",	required_argument, NULL, 'x'},
+		{"changerslot", required_argument, NULL, 'c'},
+		{"default",	no_argument,	   NULL, 'd'},
+		{"floppy",	no_argument,	   NULL, 'f'},
+		{"force",       no_argument,       NULL, 'F'},
+		{"help",	no_argument,	   NULL, 'h'},
+		{"listspeed",   no_argument,       NULL, 'X'},
+		{"manualeject", required_argument, NULL, 'i'},
+		{"noop",	no_argument,	   NULL, 'n'},
+		{"no-unmount",	no_argument,	   NULL, 'm'},
+		{"no-partitions-unmount", no_argument, NULL, 'M' },
+		{"proc",	no_argument,	   NULL, 'p'},
+		{"scsi",	no_argument,	   NULL, 's'},
+		{"tape",	no_argument,	   NULL, 'q'},
+		{"trayclose",	no_argument,	   NULL, 't'},
+		{"traytoggle",	no_argument,	   NULL, 'T'},
+		{"verbose",	no_argument,	   NULL, 'v'},
+		{"version",	no_argument,	   NULL, 'V'},
+		{NULL, 0, NULL, 0}
+	};
+	int c;
+
+	while ((c = getopt_long(argc, argv,
+				"a:c:i:x:dfFhnqrstTXvVpmM", long_opts, NULL)) != -1) {
+		switch (c) {
+		case 'a':
+			ctl->a_option = 1;
+			ctl->a_arg = parse_switch(optarg, _("argument error"),
+						"on", "off",  "1", "0",  NULL);
+			break;
+		case 'c':
+			ctl->c_option = 1;
+			ctl->c_arg = strtoul_or_err(optarg, _("invalid argument to --changerslot/-c option"));
+			break;
+		case 'x':
+			ctl->x_option = 1;
+			ctl->x_arg = strtoul_or_err(optarg, _("invalid argument to --cdspeed/-x option"));
+			break;
+		case 'd':
+			ctl->d_option = 1;
+			break;
+		case 'f':
+			ctl->f_option = 1;
+			break;
+		case 'F':
+			ctl->F_option = 1;
+			break;
+		case 'i':
+			ctl->i_option = 1;
+			ctl->i_arg = parse_switch(optarg, _("argument error"),
+						"on", "off",  "1", "0",  NULL);
+			break;
+		case 'm':
+			ctl->m_option = 1;
+			break;
+		case 'M':
+			ctl->M_option = 1;
+			break;
+		case 'n':
+			ctl->n_option = 1;
+			break;
+		case 'p':
+			ctl->p_option = 1;
+			break;
+		case 'q':
+			ctl->q_option = 1;
+			break;
+		case 'r':
+			ctl->r_option = 1;
+			break;
+		case 's':
+			ctl->s_option = 1;
+			break;
+		case 't':
+			ctl->t_option = 1;
+			break;
+		case 'T':
+			ctl->T_option = 1;
+			break;
+		case 'X':
+			ctl->X_option = 1;
+			break;
+		case 'v':
+			ctl->v_option = 1;
+			break;
+
+		case 'h':
+			usage();
+		case 'V':
+			print_version(EXIT_SUCCESS);
+		default:
+			errtryhelp(EXIT_FAILURE);
+			break;
+		}
+	}
+
+	/* check for a single additional argument */
+	if ((argc - optind) > 1)
+		errx(EXIT_FAILURE, _("too many arguments"));
+
+	if ((argc - optind) == 1)
+		ctl->device = xstrdup(argv[optind]);
+}
+
+/*
+ * Given name, such as foo, see if any of the following exist:
+ *
+ * foo (if foo starts with '.' or '/')
+ * /dev/foo
+ *
+ * If found, return the full path. If not found, return 0.
+ * Returns pointer to dynamically allocated string.
+ */
+static char *find_device(const char *name)
+{
+	if (!name)
+		return NULL;
+
+	if ((*name == '.' || *name == '/') && access(name, F_OK) == 0)
+		return xstrdup(name);
+
+	char buf[PATH_MAX];
+
+	snprintf(buf, sizeof(buf), "/dev/%s", name);
+	if (access(buf, F_OK) == 0)
+		return xstrdup(buf);
+
+	return NULL;
+}
+
+/* Set or clear auto-eject mode. */
+static void auto_eject(const struct eject_control *ctl)
+{
+	int status = -1;
+
+#if defined(CDROM_SET_OPTIONS) && defined(CDROM_CLEAR_OPTIONS)
+	if (ctl->a_arg)
+		status = ioctl(ctl->fd, CDROM_SET_OPTIONS, CDO_AUTO_EJECT);
+	else
+		status = ioctl(ctl->fd, CDROM_CLEAR_OPTIONS, CDO_AUTO_EJECT);
+#else
+	errno = ENOSYS;
+#endif
+	if (status < 0)
+		err(EXIT_FAILURE,_("CD-ROM auto-eject command failed"));
+}
+
+/*
+ * Stops CDROM from opening on manual eject button press.
+ * This can be useful when you carry your laptop
+ * in your bag while it's on and no CD inserted in it's drive.
+ * Implemented as found in Documentation/userspace-api/ioctl/cdrom.rst
+ */
+static void manual_eject(const struct eject_control *ctl)
+{
+	if (ioctl(ctl->fd, CDROM_LOCKDOOR, ctl->i_arg) < 0) {
+		switch (errno) {
+		case EDRIVE_CANT_DO_THIS:
+			errx(EXIT_FAILURE, _("CD-ROM door lock is not supported"));
+		case EBUSY:
+			errx(EXIT_FAILURE, _("other users have the drive open and not CAP_SYS_ADMIN"));
+		default:
+			err(EXIT_FAILURE, _("CD-ROM lock door command failed"));
+		}
+	}
+
+	if (ctl->i_arg)
+		info(_("CD-Drive may NOT be ejected with device button"));
+	else
+		info(_("CD-Drive may be ejected with device button"));
+}
+
+/*
+ * Changer select. CDROM_SELECT_DISC is preferred, older kernels used
+ * CDROMLOADFROMSLOT.
+ */
+static void changer_select(const struct eject_control *ctl)
+{
+#ifdef CDROM_SELECT_DISC
+	if (ioctl(ctl->fd, CDROM_SELECT_DISC, ctl->c_arg) < 0)
+		err(EXIT_FAILURE, _("CD-ROM select disc command failed"));
+
+#elif defined CDROMLOADFROMSLOT
+	if (ioctl(ctl->fd, CDROMLOADFROMSLOT, ctl->c_arg) != 0)
+		err(EXIT_FAILURE, _("CD-ROM load from slot command failed"));
+#else
+	warnx(_("IDE/ATAPI CD-ROM changer not supported by this kernel\n") );
+#endif
+}
+
+/*
+ * Close tray. Not supported by older kernels.
+ */
+static void close_tray(int fd)
+{
+	int status;
+
+#if defined(CDROMCLOSETRAY) || defined(CDIOCCLOSE)
+#if defined(CDROMCLOSETRAY)
+	status = ioctl(fd, CDROMCLOSETRAY);
+#elif defined(CDIOCCLOSE)
+	status = ioctl(fd, CDIOCCLOSE);
+#endif
+	if (status != 0)
+		err(EXIT_FAILURE, _("CD-ROM tray close command failed"));
+#else
+	warnx(_("CD-ROM tray close command not supported by this kernel\n"));
+#endif
+}
+
+/*
+ * Eject using CDROMEJECT ioctl.
+ */
+static int eject_cdrom(int fd)
+{
+#if defined(CDROMEJECT)
+	int ret = ioctl(fd, CDROM_LOCKDOOR, 0);
+	if (ret < 0)
+		return 0;
+	return ioctl(fd, CDROMEJECT) >= 0;
+#elif defined(CDIOCEJECT)
+	return ioctl(fd, CDIOCEJECT) >= 0;
+#else
+	warnx(_("CD-ROM eject unsupported"));
+	errno = ENOSYS;
+	return 0;
+#endif
+}
+
+/*
+ * Toggle tray.
+ *
+ * Written by Benjamin Schwenk <benjaminschwenk@yahoo.de> and
+ * Sybren Stuvel <sybren@thirdtower.com>
+ *
+ * Not supported by older kernels because it might use
+ * CloseTray().
+ *
+ */
+static void toggle_tray(int fd)
+{
+#ifdef CDROM_DRIVE_STATUS
+	/* First ask the CDROM for info, otherwise fall back to manual.  */
+	switch (ioctl(fd, CDROM_DRIVE_STATUS)) {
+	case CDS_TRAY_OPEN:
+		close_tray(fd);
+		return;
+
+	case CDS_NO_DISC:
+	case CDS_DISC_OK:
+		if (!eject_cdrom(fd))
+			err(EXIT_FAILURE, _("CD-ROM eject command failed"));
+		return;
+	case CDS_NO_INFO:
+		warnx(_("no CD-ROM information available"));
+		return;
+	case CDS_DRIVE_NOT_READY:
+		warnx(_("CD-ROM drive is not ready"));
+		return;
+	default:
+		err(EXIT_FAILURE, _("CD-ROM status command failed"));
+	}
+#else
+	struct timeval time_start, time_stop;
+	int time_elapsed;
+
+	/* Try to open the CDROM tray and measure the time therefore
+	 * needed.  In my experience the function needs less than 0.05
+	 * seconds if the tray was already open, and at least 1.5 seconds
+	 * if it was closed.  */
+	gettime_monotonic(&time_start);
+
+	/* Send the CDROMEJECT command to the device. */
+	if (!eject_cdrom(fd))
+		err(EXIT_FAILURE, _("CD-ROM eject command failed"));
+
+	/* Get the second timestamp, to measure the time needed to open
+	 * the tray.  */
+	gettime_monotonic(&time_stop);
+
+	time_elapsed = (time_stop.tv_sec * 1000000 + time_stop.tv_usec) -
+		(time_start.tv_sec * 1000000 + time_start.tv_usec);
+
+	/* If the tray "opened" too fast, we can be nearly sure, that it
+	 * was already open. In this case, close it now. Else the tray was
+	 * closed before. This would mean that we are done.  */
+	if (time_elapsed < TRAY_WAS_ALREADY_OPEN_USECS)
+		close_tray(fd);
+#endif
+}
+
+/*
+ * Select Speed of CD-ROM drive.
+ * Thanks to Roland Krivanek (krivanek@fmph.uniba.sk)
+ * http://dmpc.dbp.fmph.uniba.sk/~krivanek/cdrom_speed/
+ */
+static void select_speed(const struct eject_control *ctl)
+{
+#ifdef CDROM_SELECT_SPEED
+	if (ioctl(ctl->fd, CDROM_SELECT_SPEED, ctl->x_arg) != 0)
+		err(EXIT_FAILURE, _("CD-ROM select speed command failed"));
+#else
+	warnx(_("CD-ROM select speed command not supported by this kernel"));
+#endif
+}
+
+/*
+ * Read Speed of CD-ROM drive. From Linux 2.6.13, the current speed
+ * is correctly reported
+ */
+static int read_speed(const char *devname)
+{
+	int drive_number = -1;
+	char *name;
+	FILE *f;
+
+	f = fopen(_PATH_PROC_CDROMINFO, "r");
+	if (!f)
+		err(EXIT_FAILURE, _("cannot open %s"), _PATH_PROC_CDROMINFO);
+
+	name = strrchr(devname, '/') + 1;
+
+	while (name && !feof(f)) {
+		char line[512];
+		char *str;
+
+		if (!fgets(line, sizeof(line), f))
+			break;
+
+		/* find drive number in line "drive name" */
+		if (drive_number == -1) {
+			if (strncmp(line, "drive name:", 11) == 0) {
+				str = strtok(&line[11], "\t ");
+				drive_number = 0;
+				while (str && strncmp(name, str, strlen(name)) != 0) {
+					drive_number++;
+					str = strtok(NULL, "\t ");
+					if (!str)
+						errx(EXIT_FAILURE,
+						     _("%s: failed to finding CD-ROM name"),
+						     _PATH_PROC_CDROMINFO);
+				}
+			}
+		/* find line "drive speed" and read the correct speed */
+		} else {
+			if (strncmp(line, "drive speed:", 12) == 0) {
+				int n;
+
+				fclose(f);
+
+				str = line + 12;
+				normalize_whitespace((unsigned char *) str);
+
+				if (ul_strtos32(str, &n, 10) == 0)
+					return n;
+
+				errx(EXIT_FAILURE, _("%s: failed to read speed"),
+						_PATH_PROC_CDROMINFO);
+			}
+		}
+	}
+
+	errx(EXIT_FAILURE, _("failed to read speed"));
+}
+
+/*
+ * List Speed of CD-ROM drive.
+ */
+static void list_speeds(struct eject_control *ctl)
+{
+	int max_speed, curr_speed = 0;
+
+	select_speed(ctl);
+	max_speed = read_speed(ctl->device);
+
+	while (curr_speed < max_speed) {
+		ctl->x_arg = curr_speed + 1;
+		select_speed(ctl);
+		curr_speed = read_speed(ctl->device);
+		if (ctl->x_arg < curr_speed)
+			printf("%d ", curr_speed);
+		else
+			curr_speed = ctl->x_arg + 1;
+	}
+
+	printf("\n");
+}
+
+/*
+ * Eject using SCSI SG_IO commands. Return 1 if successful, 0 otherwise.
+ */
+static int eject_scsi(const struct eject_control *ctl)
+{
+	int status, k;
+	sg_io_hdr_t io_hdr;
+	unsigned char allowRmBlk[6] = {ALLOW_MEDIUM_REMOVAL, 0, 0, 0, 0, 0};
+	unsigned char startStop1Blk[6] = {START_STOP, 0, 0, 0, 1, 0};
+	unsigned char startStop2Blk[6] = {START_STOP, 0, 0, 0, 2, 0};
+	unsigned char inqBuff[2];
+	unsigned char sense_buffer[32];
+
+	if ((ioctl(ctl->fd, SG_GET_VERSION_NUM, &k) < 0) || (k < 30000)) {
+		verbose(ctl, _("not an sg device, or old sg driver"));
+		return 0;
+	}
+
+	memset(&io_hdr, 0, sizeof(sg_io_hdr_t));
+	io_hdr.interface_id = 'S';
+	io_hdr.cmd_len = 6;
+	io_hdr.mx_sb_len = sizeof(sense_buffer);
+	io_hdr.dxfer_direction = SG_DXFER_NONE;
+	io_hdr.dxfer_len = 0;
+	io_hdr.dxferp = inqBuff;
+	io_hdr.sbp = sense_buffer;
+	io_hdr.timeout = 10000;
+
+	io_hdr.cmdp = allowRmBlk;
+	status = ioctl(ctl->fd, SG_IO, (void *)&io_hdr);
+	if (status < 0 || io_hdr.host_status || io_hdr.driver_status)
+		return 0;
+
+	io_hdr.cmdp = startStop1Blk;
+	status = ioctl(ctl->fd, SG_IO, (void *)&io_hdr);
+	if (status < 0 || io_hdr.host_status)
+		return 0;
+
+	/* Ignore errors when there is not medium -- in this case driver sense
+	 * buffer sets MEDIUM NOT PRESENT (3a) bit. For more details see:
+	 * http://www.tldp.org/HOWTO/archived/SCSI-Programming-HOWTO/SCSI-Programming-HOWTO-22.html#sec-sensecodes
+	 * -- kzak Jun 2013
+	 */
+	if (io_hdr.driver_status != 0 &&
+	    !(io_hdr.driver_status == DRIVER_SENSE && io_hdr.sbp &&
+		                                      io_hdr.sbp[12] == 0x3a))
+		return 0;
+
+	io_hdr.cmdp = startStop2Blk;
+	status = ioctl(ctl->fd, SG_IO, (void *)&io_hdr);
+	if (status < 0 || io_hdr.host_status || io_hdr.driver_status)
+		return 0;
+
+	/* force kernel to reread partition table when new disc inserted */
+	ioctl(ctl->fd, BLKRRPART);
+	return 1;
+}
+
+/*
+ * Eject using FDEJECT ioctl. Return 1 if successful, 0 otherwise.
+ */
+static int eject_floppy(int fd)
+{
+	return ioctl(fd, FDEJECT) >= 0;
+}
+
+
+/*
+ * Rewind and eject using tape ioctl. Return 1 if successful, 0 otherwise.
+ */
+static int eject_tape(int fd)
+{
+	struct mtop op = { .mt_op = MTOFFL, .mt_count = 0 };
+
+	return ioctl(fd, MTIOCTOP, &op) >= 0;
+}
+
+
+/* umount a device. */
+static void umount_one(const struct eject_control *ctl, const char *name)
+{
+	int status;
+
+	if (!name)
+		return;
+
+	verbose(ctl, _("%s: unmounting"), name);
+
+	switch (fork()) {
+	case 0: /* child */
+		if (drop_permissions() != 0)
+			err(EXIT_FAILURE, _("drop permissions failed"));
+		if (ctl->p_option)
+			execl("/bin/umount", "/bin/umount", name, "-n", (char *)NULL);
+		else
+			execl("/bin/umount", "/bin/umount", name, (char *)NULL);
+
+		errexec("/bin/umount");
+
+	case -1:
+		warn( _("unable to fork"));
+		break;
+
+	default: /* parent */
+		wait(&status);
+		if (WIFEXITED(status) == 0)
+			errx(EXIT_FAILURE,
+			     _("unmount of `%s' did not exit normally"), name);
+
+		if (WEXITSTATUS(status) != 0)
+			errx(EXIT_FAILURE, _("unmount of `%s' failed\n"), name);
+		break;
+	}
+}
+
+/* Open a device file. */
+static void open_device(struct eject_control *ctl)
+{
+	int extra = ctl->F_option == 0 &&		/* never use O_EXCL on --force */
+		    ctl->force_exclusive ? O_EXCL : 0;
+
+	ctl->fd = open(ctl->device, O_RDWR | O_NONBLOCK | extra);
+	if (ctl->fd < 0)
+		ctl->fd = open(ctl->device, O_RDONLY | O_NONBLOCK | extra);
+	if (ctl->fd == -1)
+		err(EXIT_FAILURE, _("cannot open %s"), ctl->device);
+}
+
+/*
+ * See if device has been mounted by looking in mount table.  If so, set
+ * device name and mount point name, and return 1, otherwise return 0.
+ */
+static int device_get_mountpoint(struct eject_control *ctl, char **devname, char **mnt)
+{
+	struct libmnt_fs *fs;
+	int rc;
+
+	*mnt = NULL;
+
+	if (!ctl->mtab) {
+		struct libmnt_cache *cache;
+
+		ctl->mtab = mnt_new_table();
+		if (!ctl->mtab)
+			err(EXIT_FAILURE, _("failed to initialize libmount table"));
+
+		cache = mnt_new_cache();
+		mnt_table_set_cache(ctl->mtab, cache);
+		mnt_unref_cache(cache);
+
+		if (ctl->p_option)
+			rc = mnt_table_parse_file(ctl->mtab, _PATH_PROC_MOUNTINFO);
+		else
+			rc = mnt_table_parse_mtab(ctl->mtab, NULL);
+		if (rc)
+			err(EXIT_FAILURE, _("failed to parse mount table"));
+	}
+
+	fs = mnt_table_find_source(ctl->mtab, *devname, MNT_ITER_BACKWARD);
+	if (!fs) {
+		/* maybe 'devname' is mountpoint rather than a real device */
+		fs = mnt_table_find_target(ctl->mtab, *devname, MNT_ITER_BACKWARD);
+		if (fs) {
+			free(*devname);
+			*devname = xstrdup(mnt_fs_get_source(fs));
+		}
+	}
+
+	if (fs)
+		*mnt = xstrdup(mnt_fs_get_target(fs));
+	return *mnt ? 0 : -1;
+}
+
+static char *get_disk_devname(const char *device)
+{
+	struct stat st;
+	dev_t diskno = 0;
+	char diskname[128];
+
+	if (stat(device, &st) != 0)
+		return NULL;
+
+	/* get whole-disk devno */
+	if (sysfs_devno_to_wholedisk(st.st_rdev, diskname,
+				sizeof(diskname), &diskno) != 0)
+		return NULL;
+
+	return st.st_rdev == diskno ? NULL : find_device(diskname);
+}
+
+/* umount all partitions if -M not specified, otherwise returns
+ * number of the mounted partitions only.
+ */
+static int umount_partitions(struct eject_control *ctl)
+{
+	struct path_cxt *pc = NULL;
+	dev_t devno;
+	DIR *dir = NULL;
+	struct dirent *d;
+	int count = 0;
+
+	devno = sysfs_devname_to_devno(ctl->device);
+	if (devno)
+		pc = ul_new_sysfs_path(devno, NULL, NULL);
+	if (!pc)
+		return 0;
+
+	/* open /sys/block/<wholedisk> */
+	if (!(dir = ul_path_opendir(pc, NULL)))
+		goto done;
+
+	/* scan for partition subdirs */
+	while ((d = readdir(dir))) {
+		if (!strcmp(d->d_name, ".") || !strcmp(d->d_name, ".."))
+			continue;
+
+		if (sysfs_blkdev_is_partition_dirent(dir, d, ctl->device)) {
+			char *mnt = NULL;
+			char *dev = find_device(d->d_name);
+
+			if (dev && device_get_mountpoint(ctl, &dev, &mnt) == 0) {
+				verbose(ctl, _("%s: mounted on %s"), dev, mnt);
+				if (!ctl->M_option)
+					umount_one(ctl, mnt);
+				count++;
+			}
+			free(dev);
+			free(mnt);
+		}
+	}
+
+done:
+	if (dir)
+		closedir(dir);
+	ul_unref_path(pc);
+
+	return count;
+}
+
+static int is_hotpluggable(const struct eject_control *ctl)
+{
+	struct path_cxt *pc = NULL;
+	dev_t devno;
+	int rc = 0;
+
+	devno = sysfs_devname_to_devno(ctl->device);
+	if (devno)
+		pc = ul_new_sysfs_path(devno, NULL, NULL);
+	if (!pc)
+		return 0;
+
+	rc = sysfs_blkdev_is_hotpluggable(pc);
+	ul_unref_path(pc);
+	return rc;
+}
+
+
+/* handle -x option */
+static void set_device_speed(struct eject_control *ctl)
+{
+	if (!ctl->x_option)
+		return;
+
+	if (ctl->x_arg == 0)
+		verbose(ctl, _("setting CD-ROM speed to auto"));
+	else
+		verbose(ctl, _("setting CD-ROM speed to %ldX"), ctl->x_arg);
+
+	open_device(ctl);
+	select_speed(ctl);
+	exit(EXIT_SUCCESS);
+}
+
+
+/* main program */
+int main(int argc, char **argv)
+{
+	char *disk = NULL;
+	char *mountpoint = NULL;
+	int worked = 0;    /* set to 1 when successfully ejected */
+	struct eject_control ctl = { .fd = -1 };
+
+	setlocale(LC_ALL,"");
+	bindtextdomain(PACKAGE, LOCALEDIR);
+	textdomain(PACKAGE);
+	close_stdout_atexit();
+
+	/* parse the command line arguments */
+	parse_args(&ctl, argc, argv);
+
+	/* handle -d option */
+	if (ctl.d_option) {
+		info(_("default device: `%s'"), EJECT_DEFAULT_DEVICE);
+		return EXIT_SUCCESS;
+	}
+
+	if (!ctl.device) {
+		ctl.device = mnt_resolve_path(EJECT_DEFAULT_DEVICE, NULL);
+		verbose(&ctl, _("using default device `%s'"), ctl.device);
+	} else {
+		char *p;
+
+		if (ctl.device[strlen(ctl.device) - 1] == '/')
+			ctl.device[strlen(ctl.device) - 1] = '\0';
+
+		/* figure out full device or mount point name */
+		p = find_device(ctl.device);
+		if (p)
+			free(ctl.device);
+		else
+			p = ctl.device;
+
+		ctl.device = mnt_resolve_spec(p, NULL);
+		free(p);
+	}
+
+	if (!ctl.device)
+		errx(EXIT_FAILURE, _("unable to find device"));
+
+	verbose(&ctl, _("device name is `%s'"), ctl.device);
+
+	device_get_mountpoint(&ctl, &ctl.device, &mountpoint);
+	if (mountpoint)
+		verbose(&ctl, _("%s: mounted on %s"), ctl.device, mountpoint);
+	else
+		verbose(&ctl, _("%s: not mounted"), ctl.device);
+
+	disk = get_disk_devname(ctl.device);
+	if (disk) {
+		verbose(&ctl, _("%s: disc device: %s (disk device will be used for eject)"), ctl.device, disk);
+		free(ctl.device);
+		ctl.device = disk;
+		disk = NULL;
+	} else {
+		struct stat st;
+
+		if (stat(ctl.device, &st) != 0 || !S_ISBLK(st.st_mode))
+			errx(EXIT_FAILURE, _("%s: not found mountpoint or device "
+					"with the given name"), ctl.device);
+
+		verbose(&ctl, _("%s: is whole-disk device"), ctl.device);
+	}
+
+	if (ctl.F_option == 0 && is_hotpluggable(&ctl) == 0)
+		errx(EXIT_FAILURE, _("%s: is not hot-pluggable device"), ctl.device);
+
+	/* handle -n option */
+	if (ctl.n_option) {
+		info(_("device is `%s'"), ctl.device);
+		verbose(&ctl, _("exiting due to -n/--noop option"));
+		goto done;
+	}
+
+	/* handle -i option */
+	if (ctl.i_option) {
+		open_device(&ctl);
+		manual_eject(&ctl);
+		goto done;
+	}
+
+	/* handle -a option */
+	if (ctl.a_option) {
+		if (ctl.a_arg)
+			verbose(&ctl, _("%s: enabling auto-eject mode"), ctl.device);
+		else
+			verbose(&ctl, _("%s: disabling auto-eject mode"), ctl.device);
+		open_device(&ctl);
+		auto_eject(&ctl);
+		goto done;
+	}
+
+	/* handle -t option */
+	if (ctl.t_option) {
+		verbose(&ctl, _("%s: closing tray"), ctl.device);
+		open_device(&ctl);
+		close_tray(ctl.fd);
+		set_device_speed(&ctl);
+		goto done;
+	}
+
+	/* handle -T option */
+	if (ctl.T_option) {
+		verbose(&ctl, _("%s: toggling tray"), ctl.device);
+		open_device(&ctl);
+		toggle_tray(ctl.fd);
+		set_device_speed(&ctl);
+		goto done;
+	}
+
+	/* handle -X option */
+	if (ctl.X_option) {
+		verbose(&ctl, _("%s: listing CD-ROM speed"), ctl.device);
+		open_device(&ctl);
+		list_speeds(&ctl);
+		goto done;
+	}
+
+	/* handle -x option only */
+	if (!ctl.c_option)
+		set_device_speed(&ctl);
+
+
+	/*
+	 * Unmount all partitions if -m is not specified; or umount given
+	 * mountpoint if -M is specified, otherwise print error of another
+	 * partition is mounted.
+	 */
+	if (!ctl.m_option) {
+		int ct = umount_partitions(&ctl); /* umount all, or count mounted on -M */
+
+		if (ct == 0 && mountpoint)
+			umount_one(&ctl, mountpoint); /* probably whole-device */
+
+		if (ctl.M_option) {
+			if (ct == 1 && mountpoint)
+				umount_one(&ctl, mountpoint);
+			else if (ct)
+				errx(EXIT_FAILURE, _("error: %s: device in use"), ctl.device);
+		}
+		/* Now, we assume the device is no more used, use O_EXCL to be
+		 * resistant against our bugs and possible races (someone else
+		 * remounted the device).
+		 */
+		ctl.force_exclusive = 1;
+	}
+
+	/* handle -c option */
+	if (ctl.c_option) {
+		verbose(&ctl, _("%s: selecting CD-ROM disc #%ld"), ctl.device, ctl.c_arg);
+		open_device(&ctl);
+		changer_select(&ctl);
+		set_device_speed(&ctl);
+		goto done;
+	}
+
+	/* if user did not specify type of eject, try all four methods */
+	if (ctl.r_option + ctl.s_option + ctl.f_option + ctl.q_option == 0)
+		ctl.r_option = ctl.s_option = ctl.f_option = ctl.q_option = 1;
+
+	/* open device */
+	open_device(&ctl);
+
+	/* try various methods of ejecting until it works */
+	if (ctl.r_option) {
+		verbose(&ctl, _("%s: trying to eject using CD-ROM eject command"), ctl.device);
+		worked = eject_cdrom(ctl.fd);
+		verbose(&ctl, worked ? _("CD-ROM eject command succeeded") :
+				 _("CD-ROM eject command failed"));
+	}
+
+	if (ctl.s_option && !worked) {
+		verbose(&ctl, _("%s: trying to eject using SCSI commands"), ctl.device);
+		worked = eject_scsi(&ctl);
+		verbose(&ctl, worked ? _("SCSI eject succeeded") :
+				 _("SCSI eject failed"));
+	}
+
+	if (ctl.f_option && !worked) {
+		verbose(&ctl, _("%s: trying to eject using floppy eject command"), ctl.device);
+		worked = eject_floppy(ctl.fd);
+		verbose(&ctl, worked ? _("floppy eject command succeeded") :
+				 _("floppy eject command failed"));
+	}
+
+	if (ctl.q_option && !worked) {
+		verbose(&ctl, _("%s: trying to eject using tape offline command"), ctl.device);
+		worked = eject_tape(ctl.fd);
+		verbose(&ctl, worked ? _("tape offline command succeeded") :
+				 _("tape offline command failed"));
+	}
+
+	if (!worked)
+		errx(EXIT_FAILURE, _("unable to eject"));
+
+done:
+	/* cleanup */
+	if (ctl.fd >= 0)
+		close(ctl.fd);
+
+	free(ctl.device);
+	free(mountpoint);
+
+	mnt_unref_table(ctl.mtab);
+
+	return EXIT_SUCCESS;
+}