code-style: cleanup

- move main() at the bottom.
- put global variables at the top.
- improve usage() lines (consistent with man page).

df.c

@@ -13,63 +13,6 @@ static int aflag = 0;
 static int hflag = 0;
 static int kflag = 0;
 
-static int mnt_show(const char *fsname, const char *dir);
-
-static void
-usage(void)
-{
-	eprintf("usage: %s [-a]\n", argv0);
-}
-
-int
-main(int argc, char *argv[])
-{
-	struct mntent *me = NULL;
-	FILE *fp;
-	int ret = 0;
-
-	ARGBEGIN {
-	case 'a':
-		aflag = 1;
-		break;
-	case 'h':
-		hflag = 1;
-		kflag = 0;
-		break;
-	case 'k':
-		kflag = 1;
-		hflag = 0;
-		blksize = 1024;
-		break;
-	case 's':
-	case 'i':
-		eprintf("not implemented\n");
-	default:
-		usage();
-	} ARGEND;
-
-	if (hflag)
-		printf("Filesystem         Size       Used      "
-		       "Avail Capacity   Mounted on\n");
-	else
-		printf("Filesystem  %ld-blocks      Used     "
-		       "Avail Capacity  Mounted on\n", blksize);
-
-	fp = setmntent("/proc/mounts", "r");
-	if (!fp)
-		eprintf("setmntent %s:", "/proc/mounts");
-	while ((me = getmntent(fp)) != NULL) {
-		if (aflag == 0)
-			if (strcmp(me->mnt_type, "rootfs") == 0)
-				continue;
-		if (mnt_show(me->mnt_fsname, me->mnt_dir) < 0)
-			ret = 1;
-	}
-	endmntent(fp);
-
-	return ret;
-}
-
 #define CALC_POWER(n, power, base, i) do { \
 	while (n > power) {                \
 		power = power * base;      \
@@ -141,3 +84,58 @@ mnt_show(const char *fsname, const char *dir)
 
 	return 0;
 }
+
+static void
+usage(void)
+{
+	eprintf("usage: %s [-a]\n", argv0);
+}
+
+int
+main(int argc, char *argv[])
+{
+	struct mntent *me = NULL;
+	FILE *fp;
+	int ret = 0;
+
+	ARGBEGIN {
+	case 'a':
+		aflag = 1;
+		break;
+	case 'h':
+		hflag = 1;
+		kflag = 0;
+		break;
+	case 'k':
+		kflag = 1;
+		hflag = 0;
+		blksize = 1024;
+		break;
+	case 's':
+	case 'i':
+		eprintf("not implemented\n");
+	default:
+		usage();
+	} ARGEND;
+
+	if (hflag)
+		printf("Filesystem         Size       Used      "
+		       "Avail Capacity   Mounted on\n");
+	else
+		printf("Filesystem  %ld-blocks      Used     "
+		       "Avail Capacity  Mounted on\n", blksize);
+
+	fp = setmntent("/proc/mounts", "r");
+	if (!fp)
+		eprintf("setmntent %s:", "/proc/mounts");
+	while ((me = getmntent(fp)) != NULL) {
+		if (aflag == 0)
+			if (strcmp(me->mnt_type, "rootfs") == 0)
+				continue;
+		if (mnt_show(me->mnt_fsname, me->mnt_dir) < 0)
+			ret = 1;
+	}
+	endmntent(fp);
+
+	return ret;
+}

free.c

@@ -6,12 +6,6 @@
 
 #include "util.h"
 
-static void
-usage(void)
-{
-	eprintf("usage: %s [-bkmg]\n", argv0);
-}
-
 static unsigned int mem_unit = 1;
 static unsigned int unit_shift;
 
@@ -21,6 +15,12 @@ scale(unsigned long long v)
 	return (v * mem_unit) >> unit_shift;
 }
 
+static void
+usage(void)
+{
+	eprintf("usage: %s [-bkmg]\n", argv0);
+}
+
 int
 main(int argc, char *argv[])
 {

getty.c

@@ -15,15 +15,15 @@
 #include "config.h"
 #include "util.h"
 
+static char *tty = "/dev/tty1";
+static char *defaultterm = "linux";
+
 static void
 usage(void)
 {
 	eprintf("usage: %s [tty] [term] [cmd] [args...]\n", argv0);
 }
 
-static char *tty = "/dev/tty1";
-static char *defaultterm = "linux";
-
 int
 main(int argc, char *argv[])
 {

hwclock.c

@@ -14,64 +14,6 @@
 #include "rtc.h"
 #include "util.h"
 
-static void readrtctm(struct tm *, int);
-static void writertctm(struct tm *, int);
-static void show(char *);
-static void hctosys(char *);
-static void systohc(char *);
-
-static void
-usage(void)
-{
-	eprintf("usage: %s [-rsw] [-u] [dev]\n", argv0);
-}
-
-int
-main(int argc, char *argv[])
-{
-	char *dev = "/dev/rtc";
-	int rflag = 0;
-	int sflag = 0;
-	int wflag = 0;
-
-	ARGBEGIN {
-	case 'r':
-		rflag = 1;
-		break;
-	case 's':
-		sflag = 1;
-		break;
-	case 'w':
-		wflag = 1;
-		break;
-	case 'u':
-		break;
-	default:
-		usage();
-	} ARGEND;
-
-	if (argc > 1)
-		usage();
-	else if (argc == 1)
-		dev = argv[0];
-
-	if ((rflag ^ sflag ^ wflag) == 0)
-		eprintf("missing or incompatible function\n");
-
-	/* Only UTC support at the moment */
-	setenv("TZ", "UTC0", 1);
-	tzset();
-
-	if (rflag == 1)
-		show(dev);
-	else if (sflag == 1)
-		hctosys(dev);
-	else if (wflag == 1)
-		systohc(dev);
-
-	return 0;
-}
-
 static void
 readrtctm(struct tm *tm, int fd)
 {
@@ -163,3 +105,55 @@ systohc(char *dev)
 	writertctm(tm, fd);
 	close(fd);
 }
+
+static void
+usage(void)
+{
+	eprintf("usage: %s [-rsw] [-u] [dev]\n", argv0);
+}
+
+int
+main(int argc, char *argv[])
+{
+	char *dev = "/dev/rtc";
+	int rflag = 0;
+	int sflag = 0;
+	int wflag = 0;
+
+	ARGBEGIN {
+	case 'r':
+		rflag = 1;
+		break;
+	case 's':
+		sflag = 1;
+		break;
+	case 'w':
+		wflag = 1;
+		break;
+	case 'u':
+		break;
+	default:
+		usage();
+	} ARGEND;
+
+	if (argc > 1)
+		usage();
+	else if (argc == 1)
+		dev = argv[0];
+
+	if ((rflag ^ sflag ^ wflag) == 0)
+		eprintf("missing or incompatible function\n");
+
+	/* Only UTC support at the moment */
+	setenv("TZ", "UTC0", 1);
+	tzset();
+
+	if (rflag == 1)
+		show(dev);
+	else if (sflag == 1)
+		hctosys(dev);
+	else if (wflag == 1)
+		systohc(dev);
+
+	return 0;
+}

id.c

@@ -17,49 +17,8 @@ static void user(struct passwd *pw);
 static void userid(uid_t id);
 static void usernam(const char *nam);
 
-static void
-usage(void)
-{
-	eprintf("usage: %s [-g] [-u] [-G] [user | uid]\n", argv0);
-}
-
 static int Gflag = 0;
 
-int
-main(int argc, char *argv[])
-{
-	ARGBEGIN {
-	case 'g':
-		printf("%d\n", getegid());
-		return 0;
-	case 'u':
-		printf("%d\n", geteuid());
-		return 0;
-	case 'G':
-		Gflag = 1;
-		break;
-	default:
-		usage();
-	} ARGEND;
-
-	switch (argc) {
-	case 0:
-		userid(getuid());
-		break;
-	case 1:
-		/* user names can't begin [0-9] */
-		if (isdigit(argv[0][0]))
-			userid(estrtol(argv[0], 0));
-		else
-			usernam(argv[0]);
-		break;
-	default:
-		usage();
-	}
-
-	return 0;
-}
-
 static void
 groupid(struct passwd *pw)
 {
@@ -78,6 +37,32 @@ groupid(struct passwd *pw)
 	putchar('\n');
 }
 
+static void
+user(struct passwd *pw)
+{
+	struct group *gr;
+	gid_t gid, groups[NGROUPS_MAX];
+	int ngroups;
+	int i;
+
+	printf("uid=%u(%s)", pw->pw_uid, pw->pw_name);
+	printf(" gid=%u", pw->pw_gid);
+	if (!(gr = getgrgid(pw->pw_gid)))
+		eprintf("getgrgid:");
+	printf("(%s)", gr->gr_name);
+
+	ngroups = NGROUPS_MAX;
+	getgrouplist(pw->pw_name, pw->pw_gid, groups, &ngroups);
+	for (i = 0; i < ngroups; i++) {
+		gid = groups[i];
+		printf("%s%u", !i ? " groups=" : ",", gid);
+		if (!(gr = getgrgid(gid)))
+			eprintf("getgrgid:");
+		printf("(%s)", gr->gr_name);
+	}
+	putchar('\n');
+}
+
 static void
 usernam(const char *nam)
 {
@@ -117,27 +102,42 @@ userid(uid_t id)
 }
 
 static void
-user(struct passwd *pw)
+usage(void)
 {
-	struct group *gr;
+	eprintf("usage: %s [-g] [-u] [-G] [user | uid]\n", argv0);
-	gid_t gid, groups[NGROUPS_MAX];
+}
-	int ngroups;
+
-	int i;
+int
-
+main(int argc, char *argv[])
-	printf("uid=%u(%s)", pw->pw_uid, pw->pw_name);
+{
-	printf(" gid=%u", pw->pw_gid);
+	ARGBEGIN {
-	if (!(gr = getgrgid(pw->pw_gid)))
+	case 'g':
-		eprintf("getgrgid:");
+		printf("%d\n", getegid());
-	printf("(%s)", gr->gr_name);
+		return 0;
-
+	case 'u':
-	ngroups = NGROUPS_MAX;
+		printf("%d\n", geteuid());
-	getgrouplist(pw->pw_name, pw->pw_gid, groups, &ngroups);
+		return 0;
-	for (i = 0; i < ngroups; i++) {
+	case 'G':
-		gid = groups[i];
+		Gflag = 1;
-		printf("%s%u", !i ? " groups=" : ",", gid);
+		break;
-		if (!(gr = getgrgid(gid)))
+	default:
-			eprintf("getgrgid:");
+		usage();
-		printf("(%s)", gr->gr_name);
+	} ARGEND;
-	}
+
-	putchar('\n');
+	switch (argc) {
+	case 0:
+		userid(getuid());
+		break;
+	case 1:
+		/* user names can't begin [0-9] */
+		if (isdigit(argv[0][0]))
+			userid(estrtol(argv[0], 0));
+		else
+			usernam(argv[0]);
+		break;
+	default:
+		usage();
+	}
+
+	return 0;
 }

killall5.c

@@ -22,12 +22,6 @@ struct {
 #undef SIG
 };
 
-static void
-usage(void)
-{
-	eprintf("usage: %s [-o pid1,pid2,..,pidN] [-s signal]\n", argv0);
-}
-
 struct pidentry {
 	pid_t pid;
 	TAILQ_ENTRY(pidentry) entry;
@@ -35,15 +29,21 @@ struct pidentry {
 
 static TAILQ_HEAD(omitpid_head, pidentry) omitpid_head;
 
+static void
+usage(void)
+{
+	eprintf("usage: %s [-o pid1,pid2,..,pidN] [-s signal]\n", argv0);
+}
+
 int
 main(int argc, char *argv[])
 {
 	struct pidentry *pe, *tmp;
-	int oflag = 0;
-	char *p, *arg = NULL;
-	DIR *dp;
 	struct dirent *entry;
+	DIR *dp;
+	char *p, *arg = NULL;
 	char *end, *v;
+	int oflag = 0;
 	int sig = SIGTERM;
 	pid_t pid;
 	size_t i;

login.c

@@ -16,14 +16,6 @@
 #include "passwd.h"
 #include "util.h"
 
-static int dologin(struct passwd *, int);
-
-static void
-usage(void)
-{
-	eprintf("usage: %s [-p] username\n", argv0);
-}
-
 /* Write utmp entry */
 static void
 writeutmp(const char *user, const char *tty)
@@ -50,6 +42,31 @@ writeutmp(const char *user, const char *tty)
 	}
 }
 
+static int
+dologin(struct passwd *pw, int preserve)
+{
+	char *shell = pw->pw_shell[0] == '\0' ? "/bin/sh" : pw->pw_shell;
+
+	if (preserve == 0)
+		clearenv();
+	setenv("HOME", pw->pw_dir, 1);
+	setenv("SHELL", shell, 1);
+	setenv("USER", pw->pw_name, 1);
+	setenv("LOGNAME", pw->pw_name, 1);
+	setenv("PATH", ENV_PATH, 1);
+	if (chdir(pw->pw_dir) < 0)
+		eprintf("chdir %s:", pw->pw_dir);
+	execlp(shell, shell, "-l", NULL);
+	weprintf("execlp %s:", shell);
+	return (errno == ENOENT) ? 127 : 126;
+}
+
+static void
+usage(void)
+{
+	eprintf("usage: %s [-p] username\n", argv0);
+}
+
 int
 main(int argc, char *argv[])
 {
@@ -111,22 +128,3 @@ main(int argc, char *argv[])
 
 	return dologin(pw, pflag);
 }
-
-static int
-dologin(struct passwd *pw, int preserve)
-{
-	char *shell = pw->pw_shell[0] == '\0' ? "/bin/sh" : pw->pw_shell;
-
-	if (preserve == 0)
-		clearenv();
-	setenv("HOME", pw->pw_dir, 1);
-	setenv("SHELL", shell, 1);
-	setenv("USER", pw->pw_name, 1);
-	setenv("LOGNAME", pw->pw_name, 1);
-	setenv("PATH", ENV_PATH, 1);
-	if (chdir(pw->pw_dir) < 0)
-		eprintf("chdir %s:", pw->pw_dir);
-	execlp(shell, shell, "-l", NULL);
-	weprintf("execlp %s:", shell);
-	return (errno == ENOENT) ? 127 : 126;
-}

mknod.c

@@ -13,7 +13,7 @@
 static void
 usage(void)
 {
-	eprintf("usage: mknod [-m mode] name type major minor\n");
+	eprintf("usage: %s [-m mode] name type major minor\n", argv0);
 }
 
 int

mount.c

@@ -97,13 +97,6 @@ mounted(const char *dir)
 	return 0;
 }
 
-static void
-usage(void)
-{
-	eprintf("usage: %s [-BMRan] [-t fstype] [-o options] [source] [target]\n",
-		argv0);
-}
-
 static int
 catfile(FILE *in, FILE *out)
 {
@@ -119,6 +112,13 @@ catfile(FILE *in, FILE *out)
 	return 1;
 }
 
+static void
+usage(void)
+{
+	eprintf("usage: %s [-BMRan] [-t fstype] [-o options] [source] [target]\n",
+		argv0);
+}
+
 int
 main(int argc, char *argv[])
 {

passwd.c

@@ -18,12 +18,6 @@
 #include "text.h"
 #include "util.h"
 
-static void
-usage(void)
-{
-	eprintf("usage: %s [username]\n", argv0);
-}
-
 static FILE *
 spw_get_file(const char *user)
 {
@@ -133,6 +127,12 @@ cleanup:
 	return r;
 }
 
+static void
+usage(void)
+{
+	eprintf("usage: %s [username]\n", argv0);
+}
+
 int
 main(int argc, char *argv[])
 {

pidof.c

@@ -13,12 +13,6 @@
 #include "queue.h"
 #include "util.h"
 
-static void
-usage(void)
-{
-	eprintf("usage: %s [-o pid1,pid2,...pidN] [-s] [program...]\n", argv0);
-}
-
 struct pidentry {
 	pid_t pid;
 	TAILQ_ENTRY(pidentry) entry;
@@ -26,6 +20,12 @@ struct pidentry {
 
 static TAILQ_HEAD(omitpid_head, pidentry) omitpid_head;
 
+static void
+usage(void)
+{
+	eprintf("usage: %s [-o pid1,pid2,...pidN] [-s] [program...]\n", argv0);
+}
+
 int
 main(int argc, char *argv[])
 {

ps.c

@@ -25,14 +25,14 @@ enum {
 	PS_fflag = 1 << 3
 };
 
+static int flags;
+
 static void
 usage(void)
 {
 	eprintf("usage: [-aAdef] %s\n", argv0);
 }
 
-static int flags;
-
 int
 main(int argc, char *argv[])
 {

respawn.c

@@ -26,7 +26,7 @@ sigterm(int sig)
 static void
 usage(void)
 {
-	eprintf("usage: respawn [-l fifo] [-d N] cmd [args...]\n");
+	eprintf("usage: %s [-l fifo] [-d N] cmd [args...]\n", argv0);
 }
 
 int

stat.c

@@ -10,8 +10,38 @@
 
 #include "util.h"
 
-static void show_stat(const char *file, struct stat *st);
+static void
-static void show_stat_terse(const char *file, struct stat *st);
+show_stat_terse(const char *file, struct stat *st)
+{
+	printf("%s ", file);
+	printf("%lu %lu ", (unsigned long)st->st_size,
+	       (unsigned long)st->st_blocks);
+	printf("%04o %u %u ", st->st_mode & 0777, st->st_uid, st->st_gid);
+	printf("%llx ", (unsigned long long)st->st_dev);
+	printf("%lu %lu ", (unsigned long)st->st_ino, (unsigned long)st->st_nlink);
+	printf("%d %d ", major(st->st_rdev), minor(st->st_rdev));
+	printf("%ld %ld %ld ", st->st_atime, st->st_mtime, st->st_ctime);
+	printf("%lu\n", (unsigned long)st->st_blksize);
+}
+
+static void
+show_stat(const char *file, struct stat *st)
+{
+	char buf[100];
+
+	printf("  File: ‘%s’\n", file);
+	printf("  Size: %lu\tBlocks: %lu\tIO Block: %lu\n", (unsigned long)st->st_size,
+	       (unsigned long)st->st_blocks, (unsigned long)st->st_blksize);
+	printf("Device: %xh/%ud\tInode: %lu\tLinks %lu\n", major(st->st_dev),
+	       minor(st->st_dev), (unsigned long)st->st_ino, (unsigned long)st->st_nlink);
+	printf("Access: %04o\tUid: %u\tGid: %u\n", st->st_mode & 0777, st->st_uid, st->st_gid);
+	strftime(buf, sizeof(buf), "%Y-%m-%d %H:%M:%S", localtime(&st->st_atime));
+	printf("Access: %s\n", buf);
+	strftime(buf, sizeof(buf), "%Y-%m-%d %H:%M:%S", localtime(&st->st_mtime));
+	printf("Modify: %s\n", buf);
+	strftime(buf, sizeof(buf), "%Y-%m-%d %H:%M:%S", localtime(&st->st_ctime));
+	printf("Change: %s\n", buf);
+}
 
 static void
 usage(void)
@@ -56,37 +86,4 @@ main(int argc, char *argv[])
 	}
 
 	return ret;
-}
+}
-
-static void
-show_stat_terse(const char *file, struct stat *st)
-{
-	printf("%s ", file);
-	printf("%lu %lu ", (unsigned long)st->st_size,
-	       (unsigned long)st->st_blocks);
-	printf("%04o %u %u ", st->st_mode & 0777, st->st_uid, st->st_gid);
-	printf("%llx ", (unsigned long long)st->st_dev);
-	printf("%lu %lu ", (unsigned long)st->st_ino, (unsigned long)st->st_nlink);
-	printf("%d %d ", major(st->st_rdev), minor(st->st_rdev));
-	printf("%ld %ld %ld ", st->st_atime, st->st_mtime, st->st_ctime);
-	printf("%lu\n", (unsigned long)st->st_blksize);
-}
-
-static void
-show_stat(const char *file, struct stat *st)
-{
-	char buf[100];
-
-	printf("  File: ‘%s’\n", file);
-	printf("  Size: %lu\tBlocks: %lu\tIO Block: %lu\n", (unsigned long)st->st_size,
-	       (unsigned long)st->st_blocks, (unsigned long)st->st_blksize);
-	printf("Device: %xh/%ud\tInode: %lu\tLinks %lu\n", major(st->st_dev),
-	       minor(st->st_dev), (unsigned long)st->st_ino, (unsigned long)st->st_nlink);
-	printf("Access: %04o\tUid: %u\tGid: %u\n", st->st_mode & 0777, st->st_uid, st->st_gid);
-	strftime(buf, sizeof(buf), "%Y-%m-%d %H:%M:%S", localtime(&st->st_atime));
-	printf("Access: %s\n", buf);
-	strftime(buf, sizeof(buf), "%Y-%m-%d %H:%M:%S", localtime(&st->st_mtime));
-	printf("Modify: %s\n", buf);
-	strftime(buf, sizeof(buf), "%Y-%m-%d %H:%M:%S", localtime(&st->st_ctime));
-	printf("Change: %s\n", buf);
-}

su.c

@@ -15,7 +15,30 @@
 
 extern char **environ;
 
-static int dologin(struct passwd *);
+static int lflag = 0;
+static int pflag = 0;
+
+static int
+dologin(struct passwd *pw)
+{
+	char *shell = pw->pw_shell[0] == '\0' ? "/bin/sh" : pw->pw_shell;
+	char *term = getenv("TERM");
+	clearenv();
+	setenv("HOME", pw->pw_dir, 1);
+	setenv("SHELL", shell, 1);
+	setenv("USER", pw->pw_name, 1);
+	setenv("LOGNAME", pw->pw_name, 1);
+	setenv("TERM", term ? term : "linux", 1);
+	if (strcmp(pw->pw_name, "root") == 0)
+		setenv("PATH", ENV_SUPATH, 1);
+	else
+		setenv("PATH", ENV_PATH, 1);
+	if (chdir(pw->pw_dir) < 0)
+		eprintf("chdir %s:", pw->pw_dir);
+	execlp(shell, shell, "-l", NULL);
+	weprintf("execlp %s:", shell);
+	return (errno == ENOENT) ? 127 : 126;
+}
 
 static void
 usage(void)
@@ -23,9 +46,6 @@ usage(void)
 	eprintf("usage: %s [-lp] [username]\n", argv0);
 }
 
-static int lflag = 0;
-static int pflag = 0;
-
 int
 main(int argc, char *argv[])
 {
@@ -102,26 +122,4 @@ main(int argc, char *argv[])
 		return (errno == ENOENT) ? 127 : 126;
 	}
 	return 0;
-}
+}
-
-static int
-dologin(struct passwd *pw)
-{
-	char *shell = pw->pw_shell[0] == '\0' ? "/bin/sh" : pw->pw_shell;
-	char *term = getenv("TERM");
-	clearenv();
-	setenv("HOME", pw->pw_dir, 1);
-	setenv("SHELL", shell, 1);
-	setenv("USER", pw->pw_name, 1);
-	setenv("LOGNAME", pw->pw_name, 1);
-	setenv("TERM", term ? term : "linux", 1);
-	if (strcmp(pw->pw_name, "root") == 0)
-		setenv("PATH", ENV_SUPATH, 1);
-	else
-		setenv("PATH", ENV_PATH, 1);
-	if (chdir(pw->pw_dir) < 0)
-		eprintf("chdir %s:", pw->pw_dir);
-	execlp(shell, shell, "-l", NULL);
-	weprintf("execlp %s:", shell);
-	return (errno == ENOENT) ? 127 : 126;
-}

umount.c

@@ -8,7 +8,35 @@
 
 #include "util.h"
 
-static int umountall(int);
+static int
+umountall(int flags)
+{
+	FILE *fp;
+	struct mntent *me;
+	int ret;
+	char **mntdirs = NULL;
+	int len = 0;
+
+	fp = setmntent("/proc/mounts", "r");
+	if (!fp)
+		eprintf("setmntent %s:", "/proc/mounts");
+	while ((me = getmntent(fp))) {
+		if (strcmp(me->mnt_type, "proc") == 0)
+			continue;
+		mntdirs = erealloc(mntdirs, ++len * sizeof(*mntdirs));
+		mntdirs[len - 1] = estrdup(me->mnt_dir);
+	}
+	endmntent(fp);
+	while (--len >= 0) {
+		if (umount2(mntdirs[len], flags) < 0) {
+			weprintf("umount2 %s:", mntdirs[len]);
+			ret = 1;
+		}
+		free(mntdirs[len]);
+	}
+	free(mntdirs);
+	return ret;
+}
 
 static void
 usage(void)
@@ -55,34 +83,4 @@ main(int argc, char *argv[])
 		}
 	}
 	return ret;
-}
+}
-
-static int
-umountall(int flags)
-{
-	FILE *fp;
-	struct mntent *me;
-	int ret;
-	char **mntdirs = NULL;
-	int len = 0;
-
-	fp = setmntent("/proc/mounts", "r");
-	if (!fp)
-		eprintf("setmntent %s:", "/proc/mounts");
-	while ((me = getmntent(fp))) {
-		if (strcmp(me->mnt_type, "proc") == 0)
-			continue;
-		mntdirs = erealloc(mntdirs, ++len * sizeof(*mntdirs));
-		mntdirs[len - 1] = estrdup(me->mnt_dir);
-	}
-	endmntent(fp);
-	while (--len >= 0) {
-		if (umount2(mntdirs[len], flags) < 0) {
-			weprintf("umount2 %s:", mntdirs[len]);
-			ret = 1;
-		}
-		free(mntdirs[len]);
-	}
-	free(mntdirs);
-	return ret;
-}