 @@ -1,841 +1,841 @@
-/*	$NetBSD: swapctl.c,v 1.35 2009/09/24 16:15:20 apb Exp $	*/
+/*	$NetBSD: swapctl.c,v 1.36 2011/08/27 18:57:50 joerg Exp $	*/
 /*
  * Copyright (c) 1996, 1997, 1999 Matthew R. Green
  * All rights reserved.
+ *
  * 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 AUTHOR ``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 AUTHOR 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.
  */
 /*
  * swapctl command:
  *	-A		add all devices listed as `sw' in /etc/fstab (also
  *			(sets the dump device, if listed in fstab)
  *	-D [<dev>|none]	set dumpdev to <dev> or disable dumps
  *	-z		show dumpdev
  *	-U		remove all devices listed as `sw' in /etc/fstab.
  *	-t [blk|noblk|auto]
  *			if -A or -U , add (remove) either all block device
  *			or all non-block devices, or all swap partitions
  *	-q		check if any swap or dump devices are defined in
  *			/etc/fstab
  *	-a <dev>	add this device
  *	-d <dev>	remove this swap device
  *	-f		with -A -t auto, use the first swap as dump device
  *	-g		use gigabytes
  *	-h		use humanize_number(3) for listing
  *	-l		list swap devices
  *	-m		use megabytes
  *	-n		print actions, but do not add/remove swap or
  *			with -A/-U
  *	-o		with -A -t auto only configure the first swap as dump,
  *			(similar to -f), but do not add any further swap devs
  *	-s		short listing of swap devices
  *	-k		use kilobytes
  *	-p <pri>	use this priority
  *	-c		change priority
+ *
  * or, if invoked as "swapon" (compatibility mode):
+ *
  *	-a		all devices listed as `sw' in /etc/fstab
  *	-t		same as -t above (feature not present in old
  *			swapon(8) command)
  *	<dev>		add this device
  */
 #include <sys/cdefs.h>
 #ifndef lint
-__RCSID("$NetBSD: swapctl.c,v 1.35 2009/09/24 16:15:20 apb Exp $");
+__RCSID("$NetBSD: swapctl.c,v 1.36 2011/08/27 18:57:50 joerg Exp $");
 #endif
 #include <sys/param.h>
 #include <sys/stat.h>
 #include <sys/swap.h>
 #include <sys/sysctl.h>
 #include <sys/disk.h>
 #include <sys/disklabel.h>
 #include <unistd.h>
 #include <err.h>
 #include <errno.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #include <fstab.h>
 #include <fcntl.h>
 #include <util.h>
 #include <paths.h>
 #include "swapctl.h"
-int	command;
+static int	command;
 /*
  * Commands for swapctl(8).  These are mutually exclusive.
  */
 #define	CMD_A		0x01	/* process /etc/fstab for adding */
 #define	CMD_D		0x02	/* set dumpdev */
 #define	CMD_U		0x04	/* process /etc/fstab for removing */
 #define	CMD_a		0x08	/* add a swap file/device */
 #define	CMD_c		0x10	/* change priority of a swap file/device */
 #define	CMD_d		0x20	/* delete a swap file/device */
 #define	CMD_l		0x40	/* list swap files/devices */
 #define	CMD_s		0x80	/* summary of swap files/devices */
 #define	CMD_z		0x100	/* show dump device */
 #define	CMD_q		0x200	/* check for dump/swap in /etc/fstab */
 #define	SET_COMMAND(cmd) \
 do { \
 	if (command) \
 		usage(); \
 	command = (cmd); \
 } while (0)
 /*
  * Commands that require a "path" argument at the end of the command
  * line, and the ones which require that none exist.
  */
 #define	REQUIRE_PATH	(CMD_D | CMD_a | CMD_c | CMD_d)
 #define	REQUIRE_NOPATH	(CMD_A | CMD_U | CMD_l | CMD_s | CMD_z | CMD_q)
 /*
  * Option flags, and the commands with which they are valid.
  */
-int	kflag;		/* display in 1K^x blocks */
+static int	kflag;		/* display in 1K^x blocks */
 #define	KFLAG_CMDS	(CMD_l | CMD_s)
 #define MFLAG_CMDS	(CMD_l | CMD_s)
 #define GFLAG_CMDS	(CMD_l | CMD_s)
-int	hflag;		/* display with humanize_number */
+static int	hflag;		/* display with humanize_number */
 #define HFLAG_CMDS	(CMD_l | CMD_s)
-int	pflag;		/* priority was specified */
+static int	pflag;		/* priority was specified */
 #define	PFLAG_CMDS	(CMD_A | CMD_a | CMD_c)
-char	*tflag;		/* swap device type (blk, noblk, auto) */
+static char	*tflag;		/* swap device type (blk, noblk, auto) */
-int	autoflag;	/* 1, if tflag is "auto" */
+static int	autoflag;	/* 1, if tflag is "auto" */
 #define	TFLAG_CMDS	(CMD_A | CMD_U)
-int	fflag;		/* first swap becomes dump */
+static int	fflag;		/* first swap becomes dump */
 #define	FFLAG_CMDS	(CMD_A)
-int	oflag;		/* only autoset dump device */
+static int	oflag;		/* only autoset dump device */
 #define	OFLAG_CMDS	(CMD_A)
-int	nflag;		/* no execute, just print actions */
+static int	nflag;		/* no execute, just print actions */
 #define	NFLAG_CMDS	(CMD_A | CMD_U)
-int	pri;		/* uses 0 as default pri */
+static int	pri;		/* uses 0 as default pri */
 static	void change_priority(char *);
 static	int  add_swap(char *, int);
 static	int  delete_swap(char *);
 static	void set_dumpdev(char *);
 static	int get_dumpdev(void);
-static	void do_fstab(int);
+__dead static	void do_fstab(int);
 static	int check_fstab(void);
 static	void do_localdevs(int);
 static	void do_localdisk(const char *, int);
 static	int do_wedgesofdisk(int fd, int);
 static	int do_partitionsofdisk(const char *, int fd, int);
-static	void usage(void);
+__dead static	void usage(void);
-static	void swapon_command(int, char **);
+__dead static	void swapon_command(int, char **);
 #if 0
 static	void swapoff_command(int, char **);
 #endif
 int
 main(int argc, char *argv[])
+{
 	int	c;
 	if (strcmp(getprogname(), "swapon") == 0) {
 		swapon_command(argc, argv);
 		/* NOTREACHED */
+	}
 #if 0
 	if (strcmp(getprogname(), "swapoff") == 0) {
 		swapoff_command(argc, argv);
 		/* NOTREACHED */
+	}
 #endif
 	while ((c = getopt(argc, argv, "ADUacdfghklmnop:qst:z")) != -1) {
 		switch (c) {
 		case 'A':
 			SET_COMMAND(CMD_A);
 			break;
 		case 'D':
 			SET_COMMAND(CMD_D);
 			break;
 		case 'U':
 			SET_COMMAND(CMD_U);
 			break;
 		case 'a':
 			SET_COMMAND(CMD_a);
 			break;
 		case 'c':
 			SET_COMMAND(CMD_c);
 			break;
 		case 'd':
 			SET_COMMAND(CMD_d);
 			break;
 		case 'f':
 			fflag = 1;
 			break;
 		case 'g':
 			kflag = 3; /* 1k ^ 3 */
 			break;
 		case 'h':
 			hflag = 1;
 			break;
 		case 'k':
 			kflag = 1;
 			break;
 		case 'l':
 			SET_COMMAND(CMD_l);
 			break;
 		case 'm':
 			kflag = 2; /* 1k ^ 2 */
 			break;
 		case 'n':
 			nflag = 1;
 			break;
 		case 'o':
 			oflag = 1;
 			break;
 		case 'p':
 			pflag = 1;
 			/* XXX strtol() */
 			pri = atoi(optarg);
 			break;
 		case 'q':
 			SET_COMMAND(CMD_q);
 			break;
 		case 's':
 			SET_COMMAND(CMD_s);
 			break;
 		case 't':
 			if (tflag != NULL)
 				usage();
 			tflag = optarg;
 			if (strcmp(tflag, "auto") == 0)
 				autoflag = 1;
 			break;
 		case 'z':
 			SET_COMMAND(CMD_z);
 			break;
 		default:
 			usage();
 			/* NOTREACHED */
+		}
+	}
 	/* Did the user specify a command? */
 	if (command == 0)
 		usage();
 	argv += optind;
 	argc -= optind;
 	switch (argc) {
 	case 0:
 		if (command & REQUIRE_PATH)
 			usage();
 		break;
 	case 1:
 		if (command & REQUIRE_NOPATH)
 			usage();
 		break;
 	default:
 		usage();
+	}
 	/* To change priority, you have to specify one. */
 	if ((command == CMD_c) && pflag == 0)
 		usage();
 	/* -f and -o are mutualy exclusive */
 	if (fflag && oflag)
 		usage();
 	/* Sanity-check -t */
 	if (tflag != NULL) {
 		if (command != CMD_A && command != CMD_U)
 			usage();
 		if (strcmp(tflag, "blk") != 0 &&
 		    strcmp(tflag, "noblk") != 0 &&
 		    strcmp(tflag, "auto") != 0)
 			usage();
+	}
 	/* Dispatch the command. */
 	switch (command) {
 	case CMD_l:
 		if (!list_swap(pri, kflag, pflag, 0, 1, hflag))
 			exit(1);
 		break;
 	case CMD_s:
 		list_swap(pri, kflag, pflag, 0, 0, hflag);
 		break;
 	case CMD_c:
 		change_priority(argv[0]);
 		break;
 	case CMD_a:
 		if (! add_swap(argv[0], pri))
 			exit(1);
 		break;
 	case CMD_d:
 		if (! delete_swap(argv[0]))
 			exit(1);
 		break;
 	case CMD_A:
 		if (autoflag)
 			do_localdevs(1);
 		else
 			do_fstab(1);
 		break;
 	case CMD_D:
 		set_dumpdev(argv[0]);
 		break;
 	case CMD_z:
 		if (!get_dumpdev())
 			exit(1);
 		break;
 	case CMD_U:
 		if (autoflag)
 			do_localdevs(0);
 		else
 			do_fstab(0);
 		break;
 	case CMD_q:
 		if (check_fstab()) {
 			printf("%s: there are swap or dump devices defined in "
 			    _PATH_FSTAB "\n", getprogname());
 			exit(0);
 		} else {
 			printf("%s: no swap or dump devices in "
 			    _PATH_FSTAB "\n", getprogname());
 			exit(1);
+		}
+	}
 	exit(0);
+}
 /*
  * swapon_command: emulate the old swapon(8) program.
  */
 static void
 swapon_command(int argc, char **argv)
+{
 	int ch, fiztab = 0;
 	while ((ch = getopt(argc, argv, "at:")) != -1) {
 		switch (ch) {
 		case 'a':
 			fiztab = 1;
 			break;
 		case 't':
 			if (tflag != NULL)
 				usage();
 			tflag = optarg;
 			break;
 		default:
 			goto swapon_usage;
+		}
+	}
 	argc -= optind;
 	argv += optind;
 	if (fiztab) {
 		if (argc)
 			goto swapon_usage;
 		/* Sanity-check -t */
 		if (tflag != NULL) {
 			if (strcmp(tflag, "blk") != 0 &&
 			    strcmp(tflag, "noblk") != 0)
 				usage();
+		}
 		do_fstab(1);
 		exit(0);
 	} else if (argc == 0 || tflag != NULL)
 		goto swapon_usage;
 	while (argc) {
 		if (! add_swap(argv[0], pri))
 			exit(1);
 		argc--;
 		argv++;
+	}
 	exit(0);
 	/* NOTREACHED */
  swapon_usage:
 	fprintf(stderr, "usage: %s -a [-t blk|noblk]\n", getprogname());
 	fprintf(stderr, "       %s <path> ...\n", getprogname());
 	exit(1);
+}
 /*
  * change_priority:  change the priority of a swap device.
  */
 static void
 change_priority(char *path)
+{
 	if (swapctl(SWAP_CTL, path, pri) < 0)
 		err(1, "%s", path);
+}
 /*
  * add_swap:  add the pathname to the list of swap devices.
  */
 static int
 add_swap(char *path, int priority)
+{
 	struct stat sb;
 	if (stat(path, &sb) < 0)
 		goto oops;
 	if (sb.st_mode & S_IROTH)
 		warnx("WARNING: %s is readable by the world", path);
 	if (sb.st_mode & S_IWOTH)
 		warnx("WARNING: %s is writable by the world", path);
 	if (fflag || oflag) {
 		set_dumpdev(path);
 		if (oflag)
 			exit(0);
 		else
 			fflag = 0;
+	}
 	if (nflag)
 		return 1;
 	if (swapctl(SWAP_ON, path, priority) < 0) {
 oops:
 		err(1, "%s", path);
+	}
 	return (1);
+}
 /*
  * delete_swap:  remove the pathname to the list of swap devices.
  */
 static int
 delete_swap(char *path)
+{
 	if (nflag)
 		return 1;
 	if (swapctl(SWAP_OFF, path, pri) < 0)
 		err(1, "%s", path);
 	return (1);
+}
 static void
 set_dumpdev(char *path)
+{
 	int rv = 0;
 	if (!nflag) {
 		if (strcmp(path, "none") == 0)
 			rv = swapctl(SWAP_DUMPOFF, NULL, 0);
 		else
 			rv = swapctl(SWAP_DUMPDEV, path, 0);
+	}
 	if (rv == -1)
 		err(1, "could not set dump device to %s", path);
 	else
 		printf("%s: setting dump device to %s\n", getprogname(), path);
+}
 static int
 get_dumpdev(void)
+{
 	dev_t	dev;
 	char 	*name;
 	if (swapctl(SWAP_GETDUMPDEV, &dev, 0) == -1) {
 		warn("could not get dump device");
 		return 0;
 	} else if (dev == NODEV) {
 		printf("no dump device set\n");
 		return 0;
 	} else {
 		name = devname(dev, S_IFBLK);
 		printf("dump device is ");
 		if (name)
 			printf("%s\n", name);
 		else
 			printf("major %llu minor %llu\n",
 			    (unsigned long long)major(dev),
 			    (unsigned long long)minor(dev));
+	}
 	return 1;
+}
 static void
 do_localdevs(int add)
+{
 	size_t ressize;
 	char *disknames, *disk;
 	static const char mibname[] = "hw.disknames";
 	ressize = 0;
 	if (sysctlbyname(mibname, NULL, &ressize, NULL, 0))
 		return;
 	ressize += 200;	/* add some arbitrary slope */
 	disknames = malloc(ressize);
 	if (sysctlbyname(mibname, disknames, &ressize, NULL, 0) == 0) {
 		for (disk = strtok(disknames, " "); disk;
 		    disk = strtok(NULL, " "))
 			do_localdisk(disk, add);
+	}
 	free(disknames);
+}
 static void
 do_localdisk(const char *disk, int add)
+{
 	int fd;
 	char dvname[MAXPATHLEN];
 	if ((fd = opendisk(disk, O_RDONLY, dvname, sizeof(dvname), 0)) == -1)
 		return;
 	if (!do_wedgesofdisk(fd, add))
 		do_partitionsofdisk(disk, fd, add);
 	close(fd);
+}
 static int
 do_wedgesofdisk(int fd, int add)
+{
 	char devicename[MAXPATHLEN];
 	struct dkwedge_info *dkw;
 	struct dkwedge_list dkwl;
 	size_t bufsize;
 	u_int i;
 	dkw = NULL;
 	dkwl.dkwl_buf = dkw;
 	dkwl.dkwl_bufsize = 0;
 	for (;;) {
 		if (ioctl(fd, DIOCLWEDGES, &dkwl) == -1)
 			return 0;
 		if (dkwl.dkwl_nwedges == dkwl.dkwl_ncopied)
 			break;
 		bufsize = dkwl.dkwl_nwedges * sizeof(*dkw);
 		if (dkwl.dkwl_bufsize < bufsize) {
 			dkw = realloc(dkwl.dkwl_buf, bufsize);
 			if (dkw == NULL)
 				return 0;
 			dkwl.dkwl_buf = dkw;
 			dkwl.dkwl_bufsize = bufsize;
+		}
+	}
 	for (i = 0; i < dkwl.dkwl_ncopied; i++) {
 		if (strcmp(dkw[i].dkw_ptype, DKW_PTYPE_SWAP) != 0)
 			continue;
 		snprintf(devicename, sizeof(devicename), "%s%s", _PATH_DEV,
 		    dkw[i].dkw_devname);
 		devicename[sizeof(devicename)-1] = '\0';
 		if (add) {
 			if (add_swap(devicename, pri)) {
 				printf(
 			    	"%s: adding %s as swap device at priority 0\n",
 				    getprogname(), devicename);
+			}
 		} else {
 			if (delete_swap(devicename)) {
 				printf(
 				    "%s: removing %s as swap device\n",
 				    getprogname(), devicename);
+			}
+		}
+	}
 	free(dkw);
 	return dkwl.dkwl_nwedges != 0;
+}
 static int
 do_partitionsofdisk(const char *prefix, int fd, int add)
+{
 	char devicename[MAXPATHLEN];
 	struct disklabel lab;
 	uint i;
 	if (ioctl(fd, DIOCGDINFO, &lab) != 0)
 		return 0;
 	for (i = 0; i < lab.d_npartitions; i++) {
 		if (lab.d_partitions[i].p_fstype != FS_SWAP)
 			continue;
 		snprintf(devicename, sizeof(devicename), "%s%s%c", _PATH_DEV,
 		    prefix, 'a'+i);
 		devicename[sizeof(devicename)-1] = '\0';
 		if (add) {
 			if (add_swap(devicename, pri)) {
 				printf(
 			    	"%s: adding %s as swap device at priority 0\n",
 				    getprogname(), devicename);
+			}
 		} else {
 			if (delete_swap(devicename)) {
 				printf(
 				    "%s: removing %s as swap device\n",
 				    getprogname(), devicename);
+			}
+		}
+	}
 	return 1;
+}
 static int
 check_fstab(void)
+{
 	struct	fstab *fp;
 	while ((fp = getfsent()) != NULL) {
 		if (strcmp(fp->fs_type, "dp") == 0)
 			return 1;
 		if (strcmp(fp->fs_type, "sw") == 0)
 			return 1;
+	}
 	return 0;
+}
 static void
 do_fstab(int add)
+{
 	struct	fstab *fp;
 	char	*s;
 	long	priority;
 	struct	stat st;
 	int	isblk;
 	int	success = 0;	/* set to 1 after a successful operation */
 	int	error = 0;	/* set to 1 after an error */
 #ifdef RESCUEDIR
 #define PATH_MOUNT	RESCUEDIR "/mount_nfs"
 #define PATH_UMOUNT	RESCUEDIR "/umount"
 #else
 #define PATH_MOUNT	"/sbin/mount_nfs"
 #define PATH_UMOUNT	"/sbin/umount"
 #endif
 	char	cmd[2*PATH_MAX+sizeof(PATH_MOUNT)+2];
 #define PRIORITYEQ	"priority="
 #define NFSMNTPT	"nfsmntpt="
 	while ((fp = getfsent()) != NULL) {
 		char *spec;
 		spec = fp->fs_spec;
 		cmd[0] = '\0';
 		if (strcmp(fp->fs_type, "dp") == 0 && add) {
 			set_dumpdev(spec);
 			continue;
+		}
 		if (strcmp(fp->fs_type, "sw") != 0)
 			continue;
 		/* handle dp as mnt option */
 		if (strstr(fp->fs_mntops, "dp") && add)
 			set_dumpdev(spec);
 		isblk = 0;
 		if ((s = strstr(fp->fs_mntops, PRIORITYEQ)) != NULL) {
 			s += sizeof(PRIORITYEQ) - 1;
 			priority = atol(s);
 		} else
 			priority = pri;
 		if ((s = strstr(fp->fs_mntops, NFSMNTPT)) != NULL) {
 			char *t;
 			/*
 			 * Skip this song and dance if we're only
 			 * doing block devices.
 			 */
 			if (tflag != NULL && strcmp(tflag, "blk") == 0)
 				continue;
 			t = strpbrk(s, ",");
 			if (t != 0)
 				*t = '\0';
 			spec = strdup(s + strlen(NFSMNTPT));
 			if (t != 0)
 				*t = ',';
 			if (spec == NULL)
 				errx(1, "Out of memory");
 			if (strlen(spec) == 0) {
 				warnx("empty mountpoint");
 				free(spec);
 				continue;
+			}
 			if (add) {
 				snprintf(cmd, sizeof(cmd), "%s %s %s",
 					PATH_MOUNT, fp->fs_spec, spec);
 				if (system(cmd) != 0) {
 					warnx("%s: mount failed", fp->fs_spec);
 					continue;
+				}
 			} else {
 				snprintf(cmd, sizeof(cmd), "%s %s",
 					PATH_UMOUNT, fp->fs_spec);
+			}
 		} else {
 			/*
 			 * Determine blk-ness.
 			 */
 			if (stat(spec, &st) < 0) {
 				warn("%s", spec);
 				continue;
+			}
 			if (S_ISBLK(st.st_mode))
 				isblk = 1;
+		}
 		/*
 		 * Skip this type if we're told to.
 		 */
 		if (tflag != NULL) {
 			if (strcmp(tflag, "blk") == 0 && isblk == 0)
 				continue;
 			if (strcmp(tflag, "noblk") == 0 && isblk == 1)
 				continue;
+		}
 		if (add) {
 			if (add_swap(spec, (int)priority)) {
 				success = 1;
 				printf(
 			    	"%s: adding %s as swap device at priority %d\n",
 				    getprogname(), fp->fs_spec, (int)priority);
 			} else {
 				error = 1;
 				fprintf(stderr,
 				    "%s: failed to add %s as swap device\n",
 				    getprogname(), fp->fs_spec);
+			}
 		} else {
 			if (delete_swap(spec)) {
 				success = 1;
 				printf(
 				    "%s: removing %s as swap device\n",
 				    getprogname(), fp->fs_spec);
 			} else {
 				error = 1;
 				fprintf(stderr,
 				    "%s: failed to remove %s as swap device\n",
 				    getprogname(), fp->fs_spec);
+			}
 			if (cmd[0]) {
 				if (system(cmd) != 0) {
 					warnx("%s: umount failed", fp->fs_spec);
 					error = 1;
 					continue;
+				}
+			}
+		}
 		if (spec != fp->fs_spec)
 			free(spec);
+	}
 	if (error)
 		exit(1);
 	else if (success)
 		exit(0);
 	else
 		exit(2); /* not really an error, but no swap devices found */
+}
 static void
 usage(void)
+{
 	const char *progname = getprogname();
 	fprintf(stderr, "usage: %s -A [-f|-o] [-n] [-p priority] "
 	    "[-t blk|noblk|auto]\n", progname);
 	fprintf(stderr, "       %s -a [-p priority] path\n", progname);
 	fprintf(stderr, "       %s -q\n", progname);
 	fprintf(stderr, "       %s -c -p priority path\n", progname);
 	fprintf(stderr, "       %s -D dumpdev|none\n", progname);
 	fprintf(stderr, "       %s -d path\n", progname);
 	fprintf(stderr, "       %s -l | -s [-k|-m|-g|-h]\n", progname);
 	fprintf(stderr, "       %s -U [-n] [-t blk|noblk|auto]\n", progname);
 	fprintf(stderr, "       %s -z\n", progname);
 	exit(1);
+}