Initial merge of all tinylogin applets that do not require crypt.

There is some optimization that can be done to better use libbb in
these applets.  There is also redundancy between stty and getty which
could be eliminated.
 -Erik

10 files changed, 2109 insertions, 0 deletions

diff --git a/Config.h b/Config.h
index c46e2d2..69ef293 100644
--- a/Config.h
+++ b/Config.h
@@ -7,6 +7,8 @@
 //
 //
 // BusyBox Applications
+#define BB_ADDGROUP
+#define BB_ADDUSER
 //#define BB_ADJTIMEX
 //#define BB_AR
 //#define BB_ASH
@@ -26,6 +28,8 @@
 //#define BB_DC
 #define BB_DD
 //#define BB_DEALLOCVT
+#define BB_DELGROUP
+#define BB_DELUSER
 #define BB_DF
 #define BB_DIRNAME
 #define BB_DMESG
@@ -45,6 +49,7 @@
 //#define BB_FREERAMDISK
 //#define BB_FSCK_MINIX
 //#define BB_GETOPT
+#define BB_GETTY
 #define BB_GREP
 #define BB_GUNZIP
 #define BB_GZIP
diff --git a/addgroup.c b/addgroup.c
new file mode 100644
index 0000000..3d93201
--- /dev/null
+++ b/addgroup.c
@@ -0,0 +1,178 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * addgroup - add users to /etc/passwd and /etc/shadow
+ *
+ *
+ * Copyright (C) 1999 by Lineo, inc.
+ * Written by John Beppu <beppu@lineo.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 <errno.h>
+#include <fcntl.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/param.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <unistd.h>
+#include "busybox.h"
+#include "pwd_grp/pwd.h"
+#include "pwd_grp/grp.h"
+
+#define GROUP_FILE      "/etc/group"
+#define SHADOW_FILE		"/etc/gshadow"
+
+
+/* structs __________________________ */
+
+/* data _____________________________ */
+
+/* defaults : should this be in an external file? */
+static char *default_passwd = "x";
+
+
+/* make sure gr_name isn't taken, make sure gid is kosher
+ * return 1 on failure */
+static int group_study(const char *filename, struct group *g)
+{
+	FILE *etc_group;
+	gid_t desired;
+
+	struct group *grp;
+	const int max = 65000;
+
+	/* FIXME : make an fopen_wrapper */
+	etc_group = fopen(filename, "r");
+	if (!etc_group) {
+		perror_msg_and_die("%s", filename);
+	}
+
+	/* make sure gr_name isn't taken, make sure gid is kosher */
+	desired = g->gr_gid;
+	while ((grp = fgetgrent(etc_group))) {
+		if ((strcmp(grp->gr_name, g->gr_name)) == 0) {
+			error_msg_and_die("%s: group already in use\n", g->gr_name);
+		}
+		if ((desired) && grp->gr_gid == desired) {
+			error_msg_and_die("%d: gid has already been allocated\n",
+							  desired);
+		}
+		if ((grp->gr_gid > g->gr_gid) && (grp->gr_gid < max)) {
+			g->gr_gid = grp->gr_gid;
+		}
+	}
+	fclose(etc_group);
+
+	/* gid */
+	if (desired) {
+		g->gr_gid = desired;
+	} else {
+		g->gr_gid++;
+	}
+	/* return 1; */
+	return 0;
+}
+
+/* append a new user to the passwd file */
+static int addgroup(const char *filename, char *group, gid_t gid)
+{
+	FILE *etc_group;
+	FILE *etc_gshadow;
+	char *gshadow = SHADOW_FILE;
+
+	struct group gr;
+
+	/* group:passwd:gid:userlist */
+	const char *entryfmt = "%s:%s:%d:%s\n";
+
+	/* make sure gid and group haven't already been allocated */
+	gr.gr_gid = gid;
+	gr.gr_name = group;
+	if (group_study(filename, &gr))
+		return 1;
+
+	/* add entry to group */
+	etc_group = fopen(filename, "a");
+	if (!etc_group) {
+		perror_msg_and_die("%s", filename);
+	}
+	fprintf(etc_group, entryfmt, group, default_passwd, gr.gr_gid, "");
+	fclose(etc_group);
+
+	/* add entry to gshadow if necessary */
+	if (access(gshadow, F_OK|W_OK) == 0) {
+		etc_gshadow = xfopen(gshadow, "a");
+		fprintf(etc_gshadow, "%s:!::\n", group);
+		fclose(etc_gshadow);
+	}
+
+	/* return 1; */
+	return 0;
+}
+
+/*
+ * addgroup will take a login_name as its first parameter.
+ *
+ * gid 
+ *
+ * can be customized via command-line parameters.
+ * ________________________________________________________________________ */
+int addgroup_main(int argc, char **argv)
+{
+	int i;
+	char opt;
+	char *group;
+	gid_t gid = 0;
+
+	/* get remaining args */
+	for (i = 1; i < argc; i++) {
+		if (argv[i][0] == '-') {
+			opt = argv[i][1];
+			switch (opt) {
+			case 'h':
+				show_usage();
+				break;
+			case 'g':
+				gid = strtol(argv[++i], NULL, 10);
+				break;
+			default:
+				error_msg_and_die("addgroup: invalid option -- %c\n", opt);
+			}
+		} else {
+			break;
+		}
+	}
+
+	if (i >= argc) {
+		show_usage();
+	} else {
+		group = argv[i];
+	}
+
+	if (geteuid() != 0) {
+		error_msg_and_die
+			("addgroup: Only root may add a group to the system.\n");
+	}
+
+	/* werk */
+	return addgroup(GROUP_FILE, group, gid);
+}
+
+/* $Id: addgroup.c,v 1.1 2001/08/21 16:18:59 andersen Exp $ */
diff --git a/adduser.c b/adduser.c
new file mode 100644
index 0000000..6bd2c25
--- /dev/null
+++ b/adduser.c
@@ -0,0 +1,366 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * adduser - add users to /etc/passwd and /etc/shadow
+ *
+ *
+ * Copyright (C) 1999 by Lineo, inc.
+ * Written by John Beppu <beppu@lineo.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 <errno.h>
+#include <fcntl.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <shadow.h>
+#include <time.h>
+#include <unistd.h>
+#include <sys/param.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include "busybox.h"
+#include "pwd_grp/pwd.h"
+#include "pwd_grp/grp.h"
+
+#define PASSWD_FILE     "/etc/passwd"
+#define SHADOW_FILE		"/etc/gshadow"
+
+#if 0
+#  define PASSWD_FILE "passwd"
+#  define SHADOW_FILE "shadow"
+#endif
+
+/* structs __________________________ */
+
+typedef struct {
+	uid_t u;
+	gid_t g;
+} Id;
+
+/* data _____________________________ */
+
+/* defaults : should this be in an external file? */
+static char *default_passwd = "x";
+static char *default_gecos = "Embedix User,,,";
+static char *default_home_prefix = "/home";
+static char *default_shell = "/bin/sh";
+
+/* shadow in use? */
+static int shadow_enabled = 0;
+
+/* I was doing this all over the place */
+static FILE *fopen_wrapper(const char *filename, const char *mode)
+{
+	FILE *f;
+
+	f = fopen(filename, mode);
+	if (f == NULL) {
+		fprintf(stderr, "adduser: %s: %s\n", filename, strerror(errno));
+	}
+	return f;
+}
+
+/* remix */
+/* EDR recoded such that the uid may be passed in *p */
+static int passwd_study(const char *filename, struct passwd *p)
+{
+	struct passwd *pw;
+	FILE *passwd;
+
+	const int min = 500;
+	const int max = 65000;
+
+	passwd = fopen_wrapper(filename, "r");
+	if (!passwd)
+		return 4;
+
+	/* EDR if uid is out of bounds, set to min */
+	if ((p->pw_uid > max) || (p->pw_uid < min))
+		p->pw_uid = min;
+
+	/* stuff to do:  
+	 * make sure login isn't taken;
+	 * find free uid and gid;
+	 */
+	while ((pw = fgetpwent(passwd))) {
+		if (strcmp(pw->pw_name, p->pw_name) == 0) {
+			/* return 0; */
+			return 1;
+		}
+		if ((pw->pw_uid >= p->pw_uid) && (pw->pw_uid < max)
+			&& (pw->pw_uid >= min)) {
+			p->pw_uid = pw->pw_uid + 1;
+		}
+	}
+
+	/* EDR check for an already existing gid */
+	while (getgrgid(p->pw_uid) != NULL)
+		p->pw_uid++;
+
+	/* EDR also check for an existing group definition */
+	if (getgrnam(p->pw_name) != NULL)
+		return 3;
+
+	/* EDR bounds check */
+	if ((p->pw_uid > max) || (p->pw_uid < min))
+		return 2;
+
+	/* EDR create new gid always = uid */
+	p->pw_gid = p->pw_uid;
+
+	/* return 1; */
+	return 0;
+}
+
+static void addgroup_wrapper(const char *login, gid_t gid)
+{
+	int argc = 4;
+	char *argv[] = { "addgroup", "-g", NULL, NULL };
+	char group_id[8];
+	char group_name[32];
+
+	strncpy(group_name, login, 32);
+	argv[3] = group_name;
+	sprintf(group_id, "%d", gid);
+	argv[2] = group_id;
+	addgroup_main(argc, argv);
+}
+
+static void passwd_wrapper(const char *login)
+{
+	char *prog = "passwd";
+	execlp(prog, prog, login, NULL);
+	error_msg_and_die("Failed to execute 'passwd', you must set the password for '%s' manually\n", login);
+}
+
+/*
+ * pwd_to_spwd - create entries for new spwd structure
+ *
+ *	pwd_to_spwd() creates a new (struct spwd) containing the
+ *	information in the pointed-to (struct passwd).
+ */
+#define DAY (24L*3600L)
+#define WEEK (7*DAY)
+#define SCALE DAY
+static struct spwd *pwd_to_spwd(const struct passwd *pw)
+{
+	static struct spwd sp;
+
+	/*
+	 * Nice, easy parts first.  The name and passwd map directly
+	 * from the old password structure to the new one.
+	 */
+	sp.sp_namp = pw->pw_name;
+	sp.sp_pwdp = pw->pw_passwd;
+
+	/*
+	 * Defaults used if there is no pw_age information.
+	 */
+	sp.sp_min = 0;
+	sp.sp_max = (10000L * DAY) / SCALE;
+	sp.sp_lstchg = time((time_t *) 0) / SCALE;
+
+	/*
+	 * These fields have no corresponding information in the password
+	 * file.  They are set to uninitialized values.
+	 */
+	sp.sp_warn = -1;
+	sp.sp_expire = -1;
+	sp.sp_inact = -1;
+	sp.sp_flag = -1;
+
+	return &sp;
+}
+
+/* putpwent(3) remix */
+static int adduser(const char *filename, struct passwd *p)
+{
+	FILE *passwd;
+	int r;
+	FILE *shadow;
+	struct spwd *sp;
+
+	/* make sure everything is kosher and setup uid && gid */
+	passwd = fopen_wrapper(filename, "a");
+	if (passwd == NULL) {
+		/* return -1; */
+		return 1;
+	}
+	fseek(passwd, 0, SEEK_END);
+
+	/* if (passwd_study(filename, p) == 0) { */
+	r = passwd_study(filename, p);
+	if (r) {
+		if (r == 1)
+			error_msg("%s: login already in use\n", p->pw_name);
+		else if (r == 2)
+			error_msg("illegal uid or no uids left\n");
+		else if (r == 3)
+			error_msg("group name %s already in use\n", p->pw_name);
+		else
+			error_msg("generic error.\n");
+		/* return -1; */
+		return 1;
+	}
+
+	/* add to passwd */
+	if (putpwent(p, passwd) == -1) {
+		/* return -1; */
+		return 1;
+	}
+	fclose(passwd);
+
+	/* add to shadow if necessary */
+	if (shadow_enabled) {
+		shadow = fopen_wrapper(SHADOW_FILE, "a");
+		if (shadow == NULL) {
+			/* return -1; */
+			return 1;
+		}
+		fseek(shadow, 0, SEEK_END);
+		sp = pwd_to_spwd(p);
+		sp->sp_max = 99999;		/* debianish */
+		sp->sp_warn = 7;
+		fprintf(shadow, "%s:!:%ld:%ld:%ld:%ld:::\n",
+				sp->sp_namp, sp->sp_lstchg, sp->sp_min, sp->sp_max,
+				sp->sp_warn);
+		fclose(shadow);
+	}
+
+	/* add to group */
+	/* addgroup should be responsible for dealing w/ gshadow */
+	addgroup_wrapper(p->pw_name, p->pw_gid);
+
+	/* Clear the umask for this process so it doesn't
+	 * * screw up the permissions on the mkdir and chown. */
+	umask(0);
+
+	/* mkdir */
+	if (mkdir(p->pw_dir, 0755)) {
+		perror_msg("%s", p->pw_dir);
+	}
+	/* Set the owner and group so it is owned by the new user. */
+	if (chown(p->pw_dir, p->pw_uid, p->pw_gid)) {
+		perror_msg("%s", p->pw_dir);
+	}
+	/* Now fix up the permissions to 2755. Can't do it before now
+	 * since chown will clear the setgid bit */
+	if (chmod(p->pw_dir, 02755)) {
+		perror_msg("%s", p->pw_dir);
+	}
+	/* interactively set passwd */
+	passwd_wrapper(p->pw_name);
+
+	return 0;
+}
+
+
+/* return current uid (root is always uid == 0, right?) */
+static uid_t i_am_not_root()
+{
+	return geteuid();
+}
+
+/*
+ * adduser will take a login_name as its first parameter.
+ *
+ * home
+ * shell
+ * gecos 
+ *
+ * can be customized via command-line parameters.
+ * ________________________________________________________________________ */
+int adduser_main(int argc, char **argv)
+{
+	int i;
+	char opt;
+	char *login;
+	char *gecos;
+	char *home = NULL;
+	char *shell;
+	char path[MAXPATHLEN];
+
+	struct passwd pw;
+
+	/* init */
+	if (argc < 2) {
+		show_usage();
+	}
+	gecos = default_gecos;
+	shell = default_shell;
+
+	/* get args */
+	for (i = 1; i < argc; i++) {
+		if (argv[i][0] == '-') {
+			opt = argv[i][1];
+			switch (opt) {
+			case 'h':
+				home = argv[++i];
+				break;
+			case 'g':
+				gecos = argv[++i];
+				break;
+			case 's':
+				shell = argv[++i];
+				break;
+			default:
+				error_msg("invalid option -- %c\n", opt);
+				break;
+			}
+		} else {
+			break;
+		}
+	}
+
+	/* got root? */
+	if (i_am_not_root()) {
+		error_msg_and_die( "Only root may add a user or group to the system.\n");
+	}
+
+	/* get login */
+	if (i >= argc) {
+		error_msg_and_die( "adduser: no user specified\n");
+	}
+	login = argv[i];
+
+	/* create string for $HOME if not specified already */
+	if (!home) {
+		snprintf(path, MAXPATHLEN, "%s/%s", default_home_prefix, login);
+		path[MAXPATHLEN - 1] = 0;
+		home = path;
+	}
+	/* is /etc/shadow in use? */
+	shadow_enabled = (0 == access(SHADOW_FILE, F_OK));
+
+	/* create a passwd struct */
+	pw.pw_name = login;
+	pw.pw_passwd = default_passwd;
+	pw.pw_uid = 0;
+	pw.pw_gid = 0;
+	pw.pw_gecos = gecos;
+	pw.pw_dir = home;
+	pw.pw_shell = shell;
+
+	/* grand finale */
+	i = adduser(PASSWD_FILE, &pw);
+
+	return (i);
+}
+
+/* $Id: adduser.c,v 1.1 2001/08/21 16:18:59 andersen Exp $ */
diff --git a/applets.h b/applets.h
index a26a06e..41b7838 100644
--- a/applets.h
+++ b/applets.h
@@ -46,6 +46,12 @@
 #ifdef BB_TEST
 	APPLET_NOUSAGE("[", test_main, _BB_DIR_USR_BIN)
 #endif
+#ifdef BB_ADDGROUP
+	APPLET(addgroup, addgroup_main, _BB_DIR_BIN)
+#endif
+#ifdef BB_ADDUSER
+	APPLET(adduser, adduser_main, _BB_DIR_BIN)
+#endif
 #ifdef BB_ADJTIMEX
 	APPLET(adjtimex, adjtimex_main, _BB_DIR_SBIN)
 #endif
@@ -104,6 +110,12 @@
 #ifdef BB_DEALLOCVT
 	APPLET(deallocvt, deallocvt_main, _BB_DIR_USR_BIN)
 #endif
+#ifdef BB_DELGROUP
+	APPLET(delgroup, delgroup_main, _BB_DIR_BIN)
+#endif
+#ifdef BB_DELUSER
+	APPLET(deluser, deluser_main, _BB_DIR_BIN)
+#endif
 #ifdef BB_DF
 	APPLET(df, df_main, _BB_DIR_BIN)
 #endif
@@ -167,6 +179,9 @@
 #ifdef BB_GETOPT
 	APPLET(getopt, getopt_main, _BB_DIR_BIN)
 #endif
+#ifdef BB_GETTY
+	APPLET(getty, getty_main, _BB_DIR_SBIN)
+#endif
 #ifdef BB_GREP
 	APPLET(grep, grep_main, _BB_DIR_BIN)
 #endif
@@ -479,3 +494,4 @@
 };
 
 #endif
+
diff --git a/applets/usage.h b/applets/usage.h
index 13759d2..ac980bf 100644
--- a/applets/usage.h
+++ b/applets/usage.h
@@ -1,3 +1,19 @@
+#define addgroup_trivial_usage \
+	"[OPTIONS] <group_name>"
+#define addgroup_full_usage \
+	"Adds a group to the system" \
+	"Options:\n" \
+	    "\t-g\t\tspecify gid\n"
+
+#define adduser_trivial_usage \
+	"[OPTIONS] <user_name>"
+#define adduser_full_usage \
+	"Adds a user to the system" \
+	"Options:\n" \
+	    "\t-h\t\thome directory\n" \
+	    "\t-s\t\tshell\n" \
+	    "\t-g\t\tGECOS string\n"
+
 #define adjtimex_trivial_usage \
 	"[-q] [-o offset] [-f frequency] [-p timeconstant] [-t tick]"
 #define adjtimex_full_usage \
@@ -215,6 +231,15 @@
 #define deallocvt_full_usage \
 	 "Deallocate unused virtual terminal /dev/ttyN"
 
+#define delgroup_trivial_usage \
+	"GROUP"
+#define delgroup_full_usage \
+	 "Deletes group GROUP from the system"
+
+#define deluser_trivial_usage \
+	"USER"
+#define deluser_full_usage \
+	 "Deletes user USER from the system"
 
 #ifdef BB_FEATURE_HUMAN_READABLE
   #define USAGE_HUMAN_READABLE(a) a
@@ -533,6 +558,22 @@
         " esac\n" \
         "done\n"
 
+#define getty_trivial_usage \
+	"getty [OPTIONS]... baud_rate,... line [termtype]"
+#define getty_full_usage \
+	"\nOpens a tty, prompts for a login name, then invokes /bin/login\n\n" \
+	"Options:\n" \
+	"\t-h\t\tEnable hardware (RTS/CTS) flow control.\n" \
+	"\t-i\t\tDo not display /etc/issue before running login.\n" \
+	"\t-L\t\tLocal line, so do not do carrier detect.\n" \
+	"\t-m\t\tGet baud rate from modem's CONNECT status message.\n" \
+	"\t-w\t\tWait for a CR or LF before sending /etc/issue.\n" \
+	"\t-l login_app\tInvoke login_app instead of /bin/login.\n" \
+	"\t-t timeout\tTerminate after timeout if no username is read.\n" \
+	"\t-I initstring\tSets the init string to send before anything else.\n" \
+	"\t-H login_host\tLog login_host into the utmp file as the hostname."
+
+
 #define grep_trivial_usage \
 	"[-ihHnqvs] PATTERN [FILEs...]"
 #define grep_full_usage \
diff --git a/deluser.c b/deluser.c
new file mode 100644
index 0000000..bb6e109
--- /dev/null
+++ b/deluser.c
@@ -0,0 +1,175 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * deluser (remove lusers from the system ;) for TinyLogin
+ *
+ *
+ * Copyright (C) 1999 by Lineo, inc.
+ * Written by John Beppu <beppu@lineo.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 <sys/stat.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include "busybox.h"
+
+#define PASSWD_FILE     "/etc/passwd"
+#define GROUP_FILE      "/etc/group"
+
+/* where to start and stop deletion */
+typedef struct {
+	size_t start;
+	size_t stop;
+} Bounds;
+
+/* An interesting side-effect of boundary()'s
+ * implementation is that the first user (typically root)
+ * cannot be removed.  Let's call it a feature. */
+static Bounds boundary(const char *buffer, const char *login)
+{
+	char needle[256];
+	char *start;
+	char *stop;
+	Bounds b;
+
+	snprintf(needle, 256, "\n%s", login);
+	needle[255] = 0;
+	start = strstr(buffer, needle);
+	if (!start) {
+		b.start = 0;
+		b.stop = 0;
+		return b;
+	}
+	start++;
+
+	stop = index(start, '\n');	/* index is a BSD-ism */
+	b.start = start - buffer;
+	b.stop = stop - buffer;
+	return b;
+}
+
+/* grep -v ^login (except it only deletes the first match) */
+/* ...in fact, I think I'm going to simplify this later */
+static int del_line_matching(char *login, char *filename)
+{
+	char *buffer;
+	FILE *passwd;
+	size_t len;
+	Bounds b;
+	struct stat statbuf;
+
+	/* load into buffer */
+	passwd = fopen(filename, "r");
+	if (!passwd) {
+		return 1;
+	}
+	stat(filename, &statbuf);
+	len = statbuf.st_size;
+	buffer = (char *) malloc(len * sizeof(char));
+
+	if (!buffer) {
+		fclose(passwd);
+		return 1;
+	}
+	fread(buffer, len, sizeof(char), passwd);
+
+	fclose(passwd);
+
+	/* find the user to remove */
+	b = boundary(buffer, login);
+	if (b.stop == 0) {
+		free(buffer);
+		return 1;
+	}
+
+	/* write the file w/o the user */
+	passwd = fopen(filename, "w");
+	if (!passwd) {
+		return 1;
+	}
+	fwrite(buffer, (b.start - 1), sizeof(char), passwd);
+	fwrite(&buffer[b.stop], (len - b.stop), sizeof(char), passwd);
+
+	fclose(passwd);
+
+	return 0;
+}
+
+/* ________________________________________________________________________ */
+int delgroup_main(int argc, char **argv)
+{
+	/* int successful; */
+	int failure;
+
+	if (argc != 2) {
+		show_usage();
+	} else {
+
+		failure = del_line_matching(argv[1], GROUP_FILE);
+#ifdef TLG_FEATURE_SHADOWPASSWDS
+		if (access(GSHADOW_FILE, W_OK) == 0) {
+			/* EDR the |= works if the error is not 0, so he had it wrong */
+			failure |= del_line_matching(argv[1], GSHADOW_FILE);
+		}
+#endif							/* TLG_FEATURE_SHADOWPASSWDS */
+		/* if (!successful) { */
+		if (failure) {
+			error_msg_and_die("%s: Group could not be removed\n", argv[1]);
+		}
+
+	}
+	return (EXIT_SUCCESS);
+}
+
+/* ________________________________________________________________________ */
+int deluser_main(int argc, char **argv)
+{
+	/* int successful; */
+	int failure;
+
+	if (argc != 2) {
+		show_usage();
+	} else {
+
+		failure = del_line_matching(argv[1], PASSWD_FILE);
+		/* if (!successful) { */
+		if (failure) {
+			error_msg_and_die("%s: User could not be removed from %s\n",
+							  argv[1], PASSWD_FILE);
+		}
+#ifdef TLG_FEATURE_SHADOWPASSWDS
+		failure = del_line_matching(argv[1], SHADOW_FILE);
+		/* if (!successful) { */
+		if (failure) {
+			error_msg_and_die("%s: User could not be removed from %s\n",
+							  argv[1], SHADOW_FILE);
+		}
+#endif							/* TLG_FEATURE_SHADOWPASSWDS */
+		failure = del_line_matching(argv[1], GROUP_FILE);
+		/* if (!successful) { */
+		if (failure) {
+			error_msg_and_die("%s: User could not be removed from %s\n",
+							  argv[1], GROUP_FILE);
+		}
+
+	}
+	return (EXIT_SUCCESS);
+}
+
+/* $Id: deluser.c,v 1.1 2001/08/21 16:18:59 andersen Exp $ */
diff --git a/getty.c b/getty.c
new file mode 100644
index 0000000..a5a0dc7
--- /dev/null
+++ b/getty.c
@@ -0,0 +1,1230 @@
+/* vi: set sw=4 ts=4: */
+/* agetty.c - another getty program for Linux. By W. Z. Venema 1989
+   Ported to Linux by Peter Orbaek <poe@daimi.aau.dk>
+   This program is freely distributable. The entire man-page used to
+   be here. Now read the real man-page agetty.8 instead.
+
+   -f option added by Eric Rasmussen <ear@usfirst.org> - 12/28/95
+   
+   1999-02-22 Arkadiusz Mi¶kiewicz <misiek@misiek.eu.org>
+   - added Native Language Support
+
+   1999-05-05 Thorsten Kranzkowski <dl8bcu@gmx.net>
+   - enable hardware flow control before displaying /etc/issue
+   
+*/
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+#include <sys/ioctl.h>
+#include <errno.h>
+#include <sys/stat.h>
+#include <sys/signal.h>
+#include <fcntl.h>
+#include <stdarg.h>
+#include <ctype.h>
+#include <utmp.h>
+#include <getopt.h>
+#include <termios.h>
+#include "busybox.h"
+
+#define _PATH_LOGIN     "/bin/login"
+
+#ifdef linux
+#include <sys/param.h>
+#define USE_SYSLOG
+#endif
+
+extern void updwtmp(const char *filename, const struct utmp *ut);
+
+ /* If USE_SYSLOG is undefined all diagnostics go directly to /dev/console. */
+#ifdef	USE_SYSLOG
+#include <syslog.h>
+#endif
+
+
+ /*
+  * Some heuristics to find out what environment we are in: if it is not
+  * System V, assume it is SunOS 4.
+  */
+
+#ifdef LOGIN_PROCESS			/* defined in System V utmp.h */
+#define	SYSV_STYLE				/* select System V style getty */
+#endif
+
+ /*
+  * Things you may want to modify.
+  * 
+  * If ISSUE is not defined, agetty will never display the contents of the
+  * /etc/issue file. You will not want to spit out large "issue" files at the
+  * wrong baud rate. Relevant for System V only.
+  * 
+  * You may disagree with the default line-editing etc. characters defined
+  * below. Note, however, that DEL cannot be used for interrupt generation
+  * and for line editing at the same time.
+  */
+
+#ifdef	SYSV_STYLE
+#define	ISSUE "/etc/issue"		/* displayed before the login prompt */
+#include <sys/utsname.h>
+#include <time.h>
+#endif
+
+#define LOGIN " login: "		/* login prompt */
+
+/* Some shorthands for control characters. */
+
+#define CTL(x)		(x ^ 0100)	/* Assumes ASCII dialect */
+#define	CR		CTL('M')		/* carriage return */
+#define	NL		CTL('J')		/* line feed */
+#define	BS		CTL('H')		/* back space */
+#define	DEL		CTL('?')		/* delete */
+
+/* Defaults for line-editing etc. characters; you may want to change this. */
+
+#define DEF_ERASE	DEL			/* default erase character */
+#define DEF_INTR	CTL('C')	/* default interrupt character */
+#define DEF_QUIT	CTL('\\')	/* default quit char */
+#define DEF_KILL	CTL('U')	/* default kill char */
+#define DEF_EOF		CTL('D')	/* default EOF char */
+#define DEF_EOL		0
+#define DEF_SWITCH	0			/* default switch char */
+
+ /*
+  * SunOS 4.1.1 termio is broken. We must use the termios stuff instead,
+  * because the termio -> termios translation does not clear the termios
+  * CIBAUD bits. Therefore, the tty driver would sometimes report that input
+  * baud rate != output baud rate. I did not notice that problem with SunOS
+  * 4.1. We will use termios where available, and termio otherwise.
+  */
+
+/* linux 0.12 termio is broken too, if we use it c_cc[VERASE] isn't set
+   properly, but all is well if we use termios?! */
+
+#ifdef	TCGETS
+#undef	TCGETA
+#undef	TCSETA
+#undef	TCSETAW
+#define	termio	termios
+#define	TCGETA	TCGETS
+#define	TCSETA	TCSETS
+#define	TCSETAW	TCSETSW
+#endif
+
+ /*
+  * This program tries to not use the standard-i/o library.  This keeps the
+  * executable small on systems that do not have shared libraries (System V
+  * Release <3).
+  */
+#ifndef BUFSIZ
+#define	BUFSIZ		1024
+#endif
+
+ /*
+  * When multiple baud rates are specified on the command line, the first one
+  * we will try is the first one specified.
+  */
+
+#define	FIRST_SPEED	0
+
+/* Storage for command-line options. */
+
+#define	MAX_SPEED	10			/* max. nr. of baud rates */
+
+struct options {
+	int flags;					/* toggle switches, see below */
+	int timeout;				/* time-out period */
+	char *login;				/* login program */
+	char *tty;					/* name of tty */
+	char *initstring;			/* modem init string */
+	char *issue;				/* alternative issue file */
+	int numspeed;				/* number of baud rates to try */
+	int speeds[MAX_SPEED];		/* baud rates to be tried */
+};
+
+#define	F_PARSE		(1<<0)		/* process modem status messages */
+#define	F_ISSUE		(1<<1)		/* display /etc/issue */
+#define	F_RTSCTS	(1<<2)		/* enable RTS/CTS flow control */
+#define F_LOCAL		(1<<3)		/* force local */
+#define F_INITSTRING    (1<<4)	/* initstring is set */
+#define F_WAITCRLF	(1<<5)		/* wait for CR or LF */
+#define F_CUSTISSUE	(1<<6)		/* give alternative issue file */
+#define F_NOPROMPT	(1<<7)		/* don't ask for login name! */
+
+/* Storage for things detected while the login name was read. */
+
+struct chardata {
+	int erase;					/* erase character */
+	int kill;					/* kill character */
+	int eol;					/* end-of-line character */
+	int parity;					/* what parity did we see */
+	int capslock;				/* upper case without lower case */
+};
+
+/* Initial values for the above. */
+
+struct chardata init_chardata = {
+	DEF_ERASE,					/* default erase character */
+	DEF_KILL,					/* default kill character */
+	13,							/* default eol char */
+	0,							/* space parity */
+	0,							/* no capslock */
+};
+
+struct Speedtab {
+	long speed;
+	int code;
+};
+
+static struct Speedtab speedtab[] = {
+	{50, B50},
+	{75, B75},
+	{110, B110},
+	{134, B134},
+	{150, B150},
+	{200, B200},
+	{300, B300},
+	{600, B600},
+	{1200, B1200},
+	{1800, B1800},
+	{2400, B2400},
+	{4800, B4800},
+	{9600, B9600},
+#ifdef	B19200
+	{19200, B19200},
+#endif
+#ifdef	B38400
+	{38400, B38400},
+#endif
+#ifdef	EXTA
+	{19200, EXTA},
+#endif
+#ifdef	EXTB
+	{38400, EXTB},
+#endif
+#ifdef B57600
+	{57600, B57600},
+#endif
+#ifdef B115200
+	{115200, B115200},
+#endif
+#ifdef B230400
+	{230400, B230400},
+#endif
+	{0, 0},
+};
+
+void parse_args(int argc, char **argv, struct options *op);
+void parse_speeds(struct options *op, char *arg);
+void update_utmp(char *line);
+void open_tty(char *tty, struct termio *tp, int local);
+void termio_init(struct termio *tp, int speed, struct options *op);
+void auto_baud(struct termio *tp);
+void do_prompt(struct options *op, struct termio *tp);
+void next_speed(struct termio *tp, struct options *op);
+char *get_logname(struct options *op, struct chardata *cp,
+
+				  struct termio *tp);
+void termio_final(struct options *op, struct termio *tp,
+
+				  struct chardata *cp);
+int caps_lock(char *s);
+int bcode(char *s);
+static void error(const char *fmt, ...);
+
+/* The following is used for understandable diagnostics. */
+
+char *progname;
+
+/* Fake hostname for ut_host specified on command line. */
+char *fakehost = NULL;
+
+/* ... */
+#ifdef DEBUGGING
+#define debug(s) fprintf(dbf,s); fflush(dbf)
+#define DEBUGTERM "/dev/ttyp0"
+FILE *dbf;
+#else
+#define debug(s)				/* nothing */
+#endif
+
+int getty_main(int argc, char **argv)
+{
+	char *logname = NULL;		/* login name, given to /bin/login */
+	struct chardata chardata;	/* set by get_logname() */
+	struct termio termio;		/* terminal mode bits */
+	static struct options options = {
+		F_ISSUE,				/* show /etc/issue (SYSV_STYLE) */
+		0,						/* no timeout */
+		_PATH_LOGIN,			/* default login program */
+		"tty1",					/* default tty line */
+		"",						/* modem init string */
+		ISSUE,					/* default issue file */
+		0,						/* no baud rates known yet */
+	};
+
+	/* The BSD-style init command passes us a useless process name. */
+
+#ifdef	SYSV_STYLE
+	progname = argv[0];
+#else
+	progname = "getty";
+#endif
+
+#ifdef DEBUGGING
+	dbf = xfopen(DEBUGTERM, "w");
+
+	{
+		int i;
+
+		for (i = 1; i < argc; i++) {
+			debug(argv[i]);
+			debug("\n");
+		}
+	}
+#endif
+
+	/* Parse command-line arguments. */
+
+	parse_args(argc, argv, &options);
+
+#ifdef __linux__
+	setsid();
+#endif
+
+	/* Update the utmp file. */
+
+#ifdef	SYSV_STYLE
+	update_utmp(options.tty);
+#endif
+
+	debug("calling open_tty\n");
+	/* Open the tty as standard { input, output, error }. */
+	open_tty(options.tty, &termio, options.flags & F_LOCAL);
+
+#ifdef __linux__
+	{
+		int iv;
+
+		iv = getpid();
+		if (ioctl(0, TIOCSPGRP, &iv) < 0)
+			perror_msg("ioctl() TIOCSPGRP call failed");
+	}
+#endif
+	/* Initialize the termio settings (raw mode, eight-bit, blocking i/o). */
+	debug("calling termio_init\n");
+	termio_init(&termio, options.speeds[FIRST_SPEED], &options);
+
+	/* write the modem init string and DON'T flush the buffers */
+	if (options.flags & F_INITSTRING) {
+		debug("writing init string\n");
+		write(1, options.initstring, strlen(options.initstring));
+	}
+
+	if (!(options.flags & F_LOCAL)) {
+		/* go to blocking write mode unless -L is specified */
+		fcntl(1, F_SETFL, fcntl(1, F_GETFL, 0) & ~O_NONBLOCK);
+	}
+
+	/* Optionally detect the baud rate from the modem status message. */
+	debug("before autobaud\n");
+	if (options.flags & F_PARSE)
+		auto_baud(&termio);
+
+	/* Set the optional timer. */
+	if (options.timeout)
+		(void) alarm((unsigned) options.timeout);
+
+	/* optionally wait for CR or LF before writing /etc/issue */
+	if (options.flags & F_WAITCRLF) {
+		char ch;
+
+		debug("waiting for cr-lf\n");
+		while (read(0, &ch, 1) == 1) {
+			ch &= 0x7f;			/* strip "parity bit" */
+#ifdef DEBUGGING
+			fprintf(dbf, "read %c\n", ch);
+#endif
+			if (ch == '\n' || ch == '\r')
+				break;
+		}
+	}
+
+	chardata = init_chardata;
+	if (!(options.flags & F_NOPROMPT)) {
+		/* Read the login name. */
+		debug("reading login name\n");
+		/* while ((logname = get_logname(&options, &chardata, &termio)) == 0) */
+		while ((logname = get_logname(&options, &chardata, &termio)) ==
+			   NULL) next_speed(&termio, &options);
+	}
+
+	/* Disable timer. */
+
+	if (options.timeout)
+		(void) alarm(0);
+
+	/* Finalize the termio settings. */
+
+	termio_final(&options, &termio, &chardata);
+
+	/* Now the newline character should be properly written. */
+
+	(void) write(1, "\n", 1);
+
+	/* Let the login program take care of password validation. */
+
+	(void) execl(options.login, options.login, "--", logname, (char *) 0);
+	error("%s: can't exec %s: %m", options.tty, options.login);
+	return (0);					/* quiet GCC */
+}
+
+/* parse-args - parse command-line arguments */
+
+void parse_args(argc, argv, op)
+int argc;
+char **argv;
+struct options *op;
+{
+	extern char *optarg;		/* getopt */
+	extern int optind;			/* getopt */
+	int c;
+
+	while (isascii(c = getopt(argc, argv, "I:LH:f:hil:mt:wn"))) {
+		switch (c) {
+		case 'I':
+			if (!(op->initstring = malloc(strlen(optarg)))) {
+				error("can't malloc initstring");
+				break;
+			}
+			{
+				char ch, *p, *q;
+				int i;
+
+				/* copy optarg into op->initstring decoding \ddd
+				   octal codes into chars */
+				q = op->initstring;
+				p = optarg;
+				while (*p) {
+					if (*p == '\\') {	/* know \\ means \ */
+						p++;
+						if (*p == '\\') {
+							ch = '\\';
+							p++;
+						} else {	/* handle \000 - \177 */
+							ch = 0;
+							for (i = 1; i <= 3; i++) {
+								if (*p >= '0' && *p <= '7') {
+									ch <<= 3;
+									ch += *p - '0';
+									p++;
+								} else
+									break;
+							}
+						}
+						*q++ = ch;
+					} else {
+						*q++ = *p++;
+					}
+				}
+				*q = '\0';
+			}
+			op->flags |= F_INITSTRING;
+			break;
+
+		case 'L':				/* force local */
+			op->flags |= F_LOCAL;
+			break;
+		case 'H':				/* fake login host */
+			fakehost = optarg;
+			break;
+		case 'f':				/* custom issue file */
+			op->flags |= F_CUSTISSUE;
+			op->issue = optarg;
+			break;
+		case 'h':				/* enable h/w flow control */
+			op->flags |= F_RTSCTS;
+			break;
+		case 'i':				/* do not show /etc/issue */
+			op->flags &= ~F_ISSUE;
+			break;
+		case 'l':
+			op->login = optarg;	/* non-default login program */
+			break;
+		case 'm':				/* parse modem status message */
+			op->flags |= F_PARSE;
+			break;
+		case 'n':
+			op->flags |= F_NOPROMPT;
+			break;
+		case 't':				/* time out */
+			if ((op->timeout = atoi(optarg)) <= 0)
+				error("bad timeout value: %s", optarg);
+			break;
+		case 'w':
+			op->flags |= F_WAITCRLF;
+			break;
+		default:
+			show_usage();
+		}
+	}
+	debug("after getopt loop\n");
+	if (argc < optind + 2)		/* check parameter count */
+		show_usage();
+
+	/* we loosen up a bit and accept both "baudrate tty" and "tty baudrate" */
+	if ('0' <= argv[optind][0] && argv[optind][0] <= '9') {
+		/* a number first, assume it's a speed (BSD style) */
+		parse_speeds(op, argv[optind++]);	/* baud rate(s) */
+		op->tty = argv[optind];	/* tty name */
+	} else {
+		op->tty = argv[optind++];	/* tty name */
+		parse_speeds(op, argv[optind]);	/* baud rate(s) */
+	}
+
+	optind++;
+	if (argc > optind && argv[optind])
+		setenv("TERM", argv[optind], 1);
+
+	debug("exiting parseargs\n");
+}
+
+/* parse_speeds - parse alternate baud rates */
+
+void parse_speeds(op, arg)
+struct options *op;
+char *arg;
+{
+	char *strtok();
+	char *cp;
+
+	debug("entered parse_speeds\n");
+	for (cp = strtok(arg, ","); cp != 0; cp = strtok((char *) 0, ",")) {
+		if ((op->speeds[op->numspeed++] = bcode(cp)) <= 0)
+			error("bad speed: %s", cp);
+		if (op->numspeed > MAX_SPEED)
+			error("too many alternate speeds");
+	}
+	debug("exiting parsespeeds\n");
+}
+
+#ifdef	SYSV_STYLE
+
+/* update_utmp - update our utmp entry */
+void update_utmp(line)
+char *line;
+{
+	struct utmp ut;
+	time_t t;
+	int mypid = getpid();
+	long time();
+	long lseek();
+	struct utmp *utp;
+
+#if ! (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 1))
+	struct flock lock;
+#endif
+
+	/*
+	 * The utmp file holds miscellaneous information about things started by
+	 * /sbin/init and other system-related events. Our purpose is to update
+	 * the utmp entry for the current process, in particular the process type
+	 * and the tty line we are listening to. Return successfully only if the
+	 * utmp file can be opened for update, and if we are able to find our
+	 * entry in the utmp file.
+	 */
+
+#ifdef __linux__
+	utmpname(_PATH_UTMP);
+	setutent();
+	while ((utp = getutent())
+		   && !(utp->ut_type == INIT_PROCESS && utp->ut_pid == mypid))	/* nothing */
+		;
+
+	if (utp) {
+		memcpy(&ut, utp, sizeof(ut));
+	} else {
+		/* some inits don't initialize utmp... */
+		memset(&ut, 0, sizeof(ut));
+		strncpy(ut.ut_id, line + 3, sizeof(ut.ut_id));
+	}
+	/*endutent(); */
+
+	strncpy(ut.ut_user, "LOGIN", sizeof(ut.ut_user));
+	strncpy(ut.ut_line, line, sizeof(ut.ut_line));
+	if (fakehost)
+		strncpy(ut.ut_host, fakehost, sizeof(ut.ut_host));
+	time(&t);
+	ut.ut_time = t;
+	ut.ut_type = LOGIN_PROCESS;
+	ut.ut_pid = mypid;
+
+	pututline(&ut);
+	endutent();
+
+	{
+		updwtmp(_PATH_WTMP, &ut);
+	}
+#else							/* not __linux__ */
+	{
+		int ut_fd;
+
+		if ((ut_fd = open(UTMP_FILE, 2)) < 0) {
+			error("%s: open for update: %m"), UTMP_FILE;
+		} else {
+			long ut_size = sizeof(ut);	/* avoid nonsense */
+
+			while (read(ut_fd, (char *) &ut, sizeof(ut)) == sizeof(ut)) {
+				if (ut.ut_type == INIT_PROCESS && ut.ut_pid == mypid) {
+					ut.ut_type = LOGIN_PROCESS;
+					ut.ut_time = time((long *) 0);
+					(void) strncpy(ut.ut_name, "LOGIN", sizeof(ut.ut_name));
+					(void) strncpy(ut.ut_line, line, sizeof(ut.ut_line));
+					if (fakehost)
+						(void) strncpy(ut.ut_host, fakehost, sizeof(ut.ut_host));
+					(void) lseek(ut_fd, -ut_size, 1);
+					(void) write(ut_fd, (char *) &ut, sizeof(ut));
+					(void) close(ut_fd);
+					return;
+				}
+			}
+			error("%s: no utmp entry", line);
+		}
+	}
+#endif							/* __linux__ */
+}
+
+#endif
+
+/* open_tty - set up tty as standard { input, output, error } */
+void open_tty(tty, tp, local)
+char *tty;
+struct termio *tp;
+int local;
+{
+	/* Get rid of the present standard { output, error} if any. */
+
+	(void) close(1);
+	(void) close(2);
+	errno = 0;					/* ignore above errors */
+
+	/* Set up new standard input, unless we are given an already opened port. */
+
+	if (strcmp(tty, "-")) {
+		struct stat st;
+
+		/* Sanity checks... */
+
+		if (chdir("/dev"))
+			error("/dev: chdir() failed: %m");
+		if (stat(tty, &st) < 0)
+			error("/dev/%s: %m", tty);
+		if ((st.st_mode & S_IFMT) != S_IFCHR)
+			error("/dev/%s: not a character device", tty);
+
+		/* Open the tty as standard input. */
+
+		(void) close(0);
+		errno = 0;				/* ignore close(2) errors */
+
+		debug("open(2)\n");
+		if (open(tty, O_RDWR | O_NONBLOCK, 0) != 0)
+			error("/dev/%s: cannot open as standard input: %m", tty);
+
+	} else {
+
+		/*
+		 * Standard input should already be connected to an open port. Make
+		 * sure it is open for read/write.
+		 */
+
+		if ((fcntl(0, F_GETFL, 0) & O_RDWR) != O_RDWR)
+			error("%s: not open for read/write", tty);
+	}
+
+	/* Set up standard output and standard error file descriptors. */
+	debug("duping\n");
+	if (dup(0) != 1 || dup(0) != 2)	/* set up stdout and stderr */
+		error("%s: dup problem: %m", tty);	/* we have a problem */
+
+	/*
+	 * The following ioctl will fail if stdin is not a tty, but also when
+	 * there is noise on the modem control lines. In the latter case, the
+	 * common course of action is (1) fix your cables (2) give the modem more
+	 * time to properly reset after hanging up. SunOS users can achieve (2)
+	 * by patching the SunOS kernel variable "zsadtrlow" to a larger value;
+	 * 5 seconds seems to be a good value.
+	 */
+
+	if (ioctl(0, TCGETA, tp) < 0)
+		error("%s: ioctl: %m", tty);
+
+	/*
+	 * It seems to be a terminal. Set proper protections and ownership. Mode
+	 * 0622 is suitable for SYSV <4 because /bin/login does not change
+	 * protections. SunOS 4 login will change the protections to 0620 (write
+	 * access for group tty) after the login has succeeded.
+	 */
+
+#ifdef DEBIAN
+	{
+		/* tty to root.dialout 660 */
+		struct group *gr;
+		int id;
+
+		id = (gr = getgrnam("dialout")) ? gr->gr_gid : 0;
+		chown(tty, 0, id);
+		chmod(tty, 0660);
+
+		/* vcs,vcsa to root.sys 600 */
+		if (!strncmp(tty, "tty", 3) && isdigit(tty[3])) {
+			char *vcs, *vcsa;
+
+			if (!(vcs = malloc(strlen(tty))))
+				error("Can't malloc for vcs");
+			if (!(vcsa = malloc(strlen(tty) + 1)))
+				error("Can't malloc for vcsa");
+			strcpy(vcs, "vcs");
+			strcpy(vcs + 3, tty + 3);
+			strcpy(vcsa, "vcsa");
+			strcpy(vcsa + 4, tty + 3);
+
+			id = (gr = getgrnam("sys")) ? gr->gr_gid : 0;
+			chown(vcs, 0, id);
+			chmod(vcs, 0600);
+			chown(vcsa, 0, id);
+			chmod(vcs, 0600);
+
+			free(vcs);
+			free(vcsa);
+		}
+	}
+#else
+	(void) chown(tty, 0, 0);	/* root, sys */
+	(void) chmod(tty, 0622);	/* crw--w--w- */
+	errno = 0;					/* ignore above errors */
+#endif
+}
+
+/* termio_init - initialize termio settings */
+
+char gbuf[1024];
+char area[1024];
+
+void termio_init(tp, speed, op)
+struct termio *tp;
+int speed;
+struct options *op;
+{
+
+	/*
+	 * Initial termio settings: 8-bit characters, raw-mode, blocking i/o.
+	 * Special characters are set after we have read the login name; all
+	 * reads will be done in raw mode anyway. Errors will be dealt with
+	 * lateron.
+	 */
+#ifdef __linux__
+	/* flush input and output queues, important for modems! */
+	(void) ioctl(0, TCFLSH, TCIOFLUSH);
+#endif
+
+	tp->c_cflag = CS8 | HUPCL | CREAD | speed;
+	if (op->flags & F_LOCAL) {
+		tp->c_cflag |= CLOCAL;
+	}
+
+	tp->c_iflag = tp->c_lflag = tp->c_oflag = tp->c_line = 0;
+	tp->c_cc[VMIN] = 1;
+	tp->c_cc[VTIME] = 0;
+
+	/* Optionally enable hardware flow control */
+
+#ifdef	CRTSCTS
+	if (op->flags & F_RTSCTS)
+		tp->c_cflag |= CRTSCTS;
+#endif
+
+	(void) ioctl(0, TCSETA, tp);
+
+	/* go to blocking input even in local mode */
+	fcntl(0, F_SETFL, fcntl(0, F_GETFL, 0) & ~O_NONBLOCK);
+
+	debug("term_io 2\n");
+}
+
+/* auto_baud - extract baud rate from modem status message */
+void auto_baud(tp)
+struct termio *tp;
+{
+	int speed;
+	int vmin;
+	unsigned iflag;
+	char buf[BUFSIZ];
+	char *bp;
+	int nread;
+
+	/*
+	 * This works only if the modem produces its status code AFTER raising
+	 * the DCD line, and if the computer is fast enough to set the proper
+	 * baud rate before the message has gone by. We expect a message of the
+	 * following format:
+	 * 
+	 * <junk><number><junk>
+	 * 
+	 * The number is interpreted as the baud rate of the incoming call. If the
+	 * modem does not tell us the baud rate within one second, we will keep
+	 * using the current baud rate. It is advisable to enable BREAK
+	 * processing (comma-separated list of baud rates) if the processing of
+	 * modem status messages is enabled.
+	 */
+
+	/*
+	 * Use 7-bit characters, don't block if input queue is empty. Errors will
+	 * be dealt with lateron.
+	 */
+
+	iflag = tp->c_iflag;
+	tp->c_iflag |= ISTRIP;		/* enable 8th-bit stripping */
+	vmin = tp->c_cc[VMIN];
+	tp->c_cc[VMIN] = 0;			/* don't block if queue empty */
+	(void) ioctl(0, TCSETA, tp);
+
+	/*
+	 * Wait for a while, then read everything the modem has said so far and
+	 * try to extract the speed of the dial-in call.
+	 */
+
+	(void) sleep(1);
+	if ((nread = read(0, buf, sizeof(buf) - 1)) > 0) {
+		buf[nread] = '\0';
+		for (bp = buf; bp < buf + nread; bp++) {
+			if (isascii(*bp) && isdigit(*bp)) {
+				if ((speed = bcode(bp))) {
+					tp->c_cflag &= ~CBAUD;
+					tp->c_cflag |= speed;
+				}
+				break;
+			}
+		}
+	}
+	/* Restore terminal settings. Errors will be dealt with lateron. */
+
+	tp->c_iflag = iflag;
+	tp->c_cc[VMIN] = vmin;
+	(void) ioctl(0, TCSETA, tp);
+}
+
+/* do_prompt - show login prompt, optionally preceded by /etc/issue contents */
+void do_prompt(op, tp)
+struct options *op;
+struct termio *tp;
+{
+#ifdef	ISSUE
+	FILE *fd;
+	int oflag;
+	int c;
+	struct utsname uts;
+
+	(void) uname(&uts);
+#endif
+
+	(void) write(1, "\r\n", 2);	/* start a new line */
+#ifdef	ISSUE					/* optional: show /etc/issue */
+	if ((op->flags & F_ISSUE) && (fd = fopen(op->issue, "r"))) {
+		oflag = tp->c_oflag;	/* save current setting */
+		tp->c_oflag |= (ONLCR | OPOST);	/* map NL in output to CR-NL */
+		(void) ioctl(0, TCSETAW, tp);
+
+
+		while ((c = getc(fd)) != EOF) {
+			if (c == '\\') {
+				c = getc(fd);
+
+				switch (c) {
+				case 's':
+					(void) printf("%s", uts.sysname);
+					break;
+
+				case 'n':
+					(void) printf("%s", uts.nodename);
+					break;
+
+				case 'r':
+					(void) printf("%s", uts.release);
+					break;
+
+				case 'v':
+					(void) printf("%s", uts.version);
+					break;
+
+				case 'm':
+					(void) printf("%s", uts.machine);
+					break;
+
+				case 'o':
+				{
+					char domainname[256];
+
+					getdomainname(domainname, sizeof(domainname));
+					domainname[sizeof(domainname) - 1] = '\0';
+					printf("%s", domainname);
+				}
+					break;
+
+				case 'd':
+				case 't':
+				{
+					char *weekday[] = { "Sun", "Mon", "Tue", "Wed", "Thu",
+						"Fri", "Sat"
+					};
+					char *month[] = { "Jan", "Feb", "Mar", "Apr", "May",
+						"Jun", "Jul", "Aug", "Sep", "Oct",
+						"Nov", "Dec"
+					};
+					time_t now;
+					struct tm *tm;
+
+					(void) time(&now);
+					tm = localtime(&now);
+
+					if (c == 'd')
+						(void) printf("%s %s %d  %d",
+									  weekday[tm->tm_wday],
+									  month[tm->tm_mon], tm->tm_mday,
+									  tm->tm_year <
+									  70 ? tm->tm_year +
+									  2000 : tm->tm_year + 1900);
+					else
+						(void) printf("%02d:%02d:%02d", tm->tm_hour,
+									  tm->tm_min, tm->tm_sec);
+
+					break;
+				}
+
+				case 'l':
+					(void) printf("%s", op->tty);
+					break;
+
+				case 'b':
+				{
+					int i;
+
+					for (i = 0; speedtab[i].speed; i++) {
+						if (speedtab[i].code == (tp->c_cflag & CBAUD)) {
+							printf("%ld", speedtab[i].speed);
+							break;
+						}
+					}
+					break;
+				}
+				case 'u':
+				case 'U':
+				{
+					int users = 0;
+					struct utmp *ut;
+
+					setutent();
+					while ((ut = getutent()))
+						if (ut->ut_type == USER_PROCESS)
+							users++;
+					endutent();
+					printf("%d ", users);
+					if (c == 'U')
+						printf((users == 1) ? "user" : "users");
+					break;
+				}
+				default:
+					(void) putchar(c);
+				}
+			} else
+				(void) putchar(c);
+		}
+		fflush(stdout);
+
+		tp->c_oflag = oflag;	/* restore settings */
+		(void) ioctl(0, TCSETAW, tp);	/* wait till output is gone */
+		(void) fclose(fd);
+	}
+#endif
+#ifdef __linux__
+	{
+		char hn[MAXHOSTNAMELEN + 1];
+
+		(void) gethostname(hn, MAXHOSTNAMELEN);
+		write(1, hn, strlen(hn));
+	}
+#endif
+	(void) write(1, LOGIN, sizeof(LOGIN) - 1);	/* always show login prompt */
+}
+
+/* next_speed - select next baud rate */
+void next_speed(tp, op)
+struct termio *tp;
+struct options *op;
+{
+	static int baud_index = FIRST_SPEED;	/* current speed index */
+
+	baud_index = (baud_index + 1) % op->numspeed;
+	tp->c_cflag &= ~CBAUD;
+	tp->c_cflag |= op->speeds[baud_index];
+	(void) ioctl(0, TCSETA, tp);
+}
+
+/* get_logname - get user name, establish parity, speed, erase, kill, eol */
+/* return NULL on failure, logname on success */
+char *get_logname(op, cp, tp)
+struct options *op;
+struct chardata *cp;
+struct termio *tp;
+{
+	static char logname[BUFSIZ];
+	char *bp;
+	char c;						/* input character, full eight bits */
+	char ascval;				/* low 7 bits of input character */
+	int bits;					/* # of "1" bits per character */
+	int mask;					/* mask with 1 bit up */
+	static char *erase[] = {	/* backspace-space-backspace */
+		"\010\040\010",			/* space parity */
+		"\010\040\010",			/* odd parity */
+		"\210\240\210",			/* even parity */
+		"\210\240\210",			/* no parity */
+	};
+
+	/* Initialize kill, erase, parity etc. (also after switching speeds). */
+
+	*cp = init_chardata;
+
+	/* Flush pending input (esp. after parsing or switching the baud rate). */
+
+	(void) sleep(1);
+	(void) ioctl(0, TCFLSH, TCIFLUSH);
+
+	/* Prompt for and read a login name. */
+
+	for (*logname = 0; *logname == 0; /* void */ ) {
+
+		/* Write issue file and prompt, with "parity" bit == 0. */
+
+		do_prompt(op, tp);
+
+		/* Read name, watch for break, parity, erase, kill, end-of-line. */
+
+		for (bp = logname, cp->eol = 0; cp->eol == 0; /* void */ ) {
+
+			/* Do not report trivial EINTR/EIO errors. */
+
+			if (read(0, &c, 1) < 1) {
+				if (errno == EINTR || errno == EIO)
+					exit(0);
+				error("%s: read: %m", op->tty);
+			}
+			/* Do BREAK handling elsewhere. */
+
+			if ((c == 0) && op->numspeed > 1)
+				/* return (0); */
+				return NULL;
+
+			/* Do parity bit handling. */
+
+			if (c != (ascval = (c & 0177))) {	/* "parity" bit on ? */
+				for (bits = 1, mask = 1; mask & 0177; mask <<= 1)
+					if (mask & ascval)
+						bits++;	/* count "1" bits */
+				cp->parity |= ((bits & 1) ? 1 : 2);
+			}
+			/* Do erase, kill and end-of-line processing. */
+
+			switch (ascval) {
+			case CR:
+			case NL:
+				*bp = 0;		/* terminate logname */
+				cp->eol = ascval;	/* set end-of-line char */
+				break;
+			case BS:
+			case DEL:
+			case '#':
+				cp->erase = ascval;	/* set erase character */
+				if (bp > logname) {
+					(void) write(1, erase[cp->parity], 3);
+					bp--;
+				}
+				break;
+			case CTL('U'):
+			case '@':
+				cp->kill = ascval;	/* set kill character */
+				while (bp > logname) {
+					(void) write(1, erase[cp->parity], 3);
+					bp--;
+				}
+				break;
+			case CTL('D'):
+				exit(0);
+			default:
+				if (!isascii(ascval) || !isprint(ascval)) {
+					/* ignore garbage characters */ ;
+				} else if (bp - logname >= sizeof(logname) - 1) {
+					error("%s: input overrun", op->tty);
+				} else {
+					(void) write(1, &c, 1);	/* echo the character */
+					*bp++ = ascval;	/* and store it */
+				}
+				break;
+			}
+		}
+	}
+	/* Handle names with upper case and no lower case. */
+
+	if ((cp->capslock = caps_lock(logname))) {
+		for (bp = logname; *bp; bp++)
+			if (isupper(*bp))
+				*bp = tolower(*bp);	/* map name to lower case */
+	}
+	return (logname);
+}
+
+/* termio_final - set the final tty mode bits */
+void termio_final(op, tp, cp)
+struct options *op;
+struct termio *tp;
+struct chardata *cp;
+{
+	/* General terminal-independent stuff. */
+
+	tp->c_iflag |= IXON | IXOFF;	/* 2-way flow control */
+	tp->c_lflag |= ICANON | ISIG | ECHO | ECHOE | ECHOK | ECHOKE;
+	/* no longer| ECHOCTL | ECHOPRT */
+	tp->c_oflag |= OPOST;
+	/* tp->c_cflag = 0; */
+	tp->c_cc[VINTR] = DEF_INTR;	/* default interrupt */
+	tp->c_cc[VQUIT] = DEF_QUIT;	/* default quit */
+	tp->c_cc[VEOF] = DEF_EOF;	/* default EOF character */
+	tp->c_cc[VEOL] = DEF_EOL;
+#ifdef __linux__
+	tp->c_cc[VSWTC] = DEF_SWITCH;	/* default switch character */
+#else
+	tp->c_cc[VSWTCH] = DEF_SWITCH;	/* default switch character */
+#endif
+
+	/* Account for special characters seen in input. */
+
+	if (cp->eol == CR) {
+		tp->c_iflag |= ICRNL;	/* map CR in input to NL */
+		tp->c_oflag |= ONLCR;	/* map NL in output to CR-NL */
+	}
+	tp->c_cc[VERASE] = cp->erase;	/* set erase character */
+	tp->c_cc[VKILL] = cp->kill;	/* set kill character */
+
+	/* Account for the presence or absence of parity bits in input. */
+
+	switch (cp->parity) {
+	case 0:					/* space (always 0) parity */
+		break;
+	case 1:					/* odd parity */
+		tp->c_cflag |= PARODD;
+		/* FALLTHROUGH */
+	case 2:					/* even parity */
+		tp->c_cflag |= PARENB;
+		tp->c_iflag |= INPCK | ISTRIP;
+		/* FALLTHROUGH */
+	case (1 | 2):				/* no parity bit */
+		tp->c_cflag &= ~CSIZE;
+		tp->c_cflag |= CS7;
+		break;
+	}
+	/* Account for upper case without lower case. */
+
+	if (cp->capslock) {
+		tp->c_iflag |= IUCLC;
+		tp->c_lflag |= XCASE;
+		tp->c_oflag |= OLCUC;
+	}
+	/* Optionally enable hardware flow control */
+
+#ifdef	CRTSCTS
+	if (op->flags & F_RTSCTS)
+		tp->c_cflag |= CRTSCTS;
+#endif
+
+	/* Finally, make the new settings effective */
+
+	if (ioctl(0, TCSETA, tp) < 0)
+		error("%s: ioctl: TCSETA: %m", op->tty);
+}
+
+/* caps_lock - string contains upper case without lower case */
+/* returns 1 if true, 0 if false */
+int caps_lock(s)
+char *s;
+{
+	int capslock;
+
+	for (capslock = 0; *s; s++) {
+		if (islower(*s))
+			return (0);
+		if (capslock == 0)
+			capslock = isupper(*s);
+	}
+	return (capslock);
+}
+
+/* bcode - convert speed string to speed code; return 0 on failure */
+int bcode(s)
+char *s;
+{
+	struct Speedtab *sp;
+	long speed = atol(s);
+
+	for (sp = speedtab; sp->speed; sp++)
+		if (sp->speed == speed)
+			return (sp->code);
+	return (0);
+}
+
+/* error - report errors to console or syslog; only understands %s and %m */
+
+#define	str2cpy(b,s1,s2)	strcat(strcpy(b,s1),s2)
+
+/*
+ * output error messages
+ */
+static void error(const char *fmt, ...)
+{
+	va_list va_alist;
+	char buf[256], *bp;
+
+#ifndef	USE_SYSLOG
+	int fd;
+#endif
+
+#ifdef USE_SYSLOG
+	buf[0] = '\0';
+	bp = buf;
+#else
+	strncpy(buf, progname, 256);
+	strncat(buf, ": ", 256);
+	buf[255] = 0;
+	bp = buf + strlen(buf);
+#endif
+
+	va_start(va_alist, fmt);
+	vsnprintf(bp, 256 - strlen(buf), fmt, va_alist);
+	buf[255] = 0;
+	va_end(va_alist);
+
+#ifdef	USE_SYSLOG
+	openlog(progname, LOG_PID, LOG_AUTH);
+	syslog(LOG_ERR, buf);
+	closelog();
+#else
+	strncat(bp, "\r\n", 256 - strlen(buf));
+	buf[255] = 0;
+	if ((fd = open("/dev/console", 1)) >= 0) {
+		write(fd, buf, strlen(buf));
+		close(fd);
+	}
+#endif
+	(void) sleep((unsigned) 10);	/* be kind to init(8) */
+	exit(1);
+}
diff --git a/include/applets.h b/include/applets.h
index a26a06e..41b7838 100644
--- a/include/applets.h
+++ b/include/applets.h
@@ -46,6 +46,12 @@
 #ifdef BB_TEST
 	APPLET_NOUSAGE("[", test_main, _BB_DIR_USR_BIN)
 #endif
+#ifdef BB_ADDGROUP
+	APPLET(addgroup, addgroup_main, _BB_DIR_BIN)
+#endif
+#ifdef BB_ADDUSER
+	APPLET(adduser, adduser_main, _BB_DIR_BIN)
+#endif
 #ifdef BB_ADJTIMEX
 	APPLET(adjtimex, adjtimex_main, _BB_DIR_SBIN)
 #endif
@@ -104,6 +110,12 @@
 #ifdef BB_DEALLOCVT
 	APPLET(deallocvt, deallocvt_main, _BB_DIR_USR_BIN)
 #endif
+#ifdef BB_DELGROUP
+	APPLET(delgroup, delgroup_main, _BB_DIR_BIN)
+#endif
+#ifdef BB_DELUSER
+	APPLET(deluser, deluser_main, _BB_DIR_BIN)
+#endif
 #ifdef BB_DF
 	APPLET(df, df_main, _BB_DIR_BIN)
 #endif
@@ -167,6 +179,9 @@
 #ifdef BB_GETOPT
 	APPLET(getopt, getopt_main, _BB_DIR_BIN)
 #endif
+#ifdef BB_GETTY
+	APPLET(getty, getty_main, _BB_DIR_SBIN)
+#endif
 #ifdef BB_GREP
 	APPLET(grep, grep_main, _BB_DIR_BIN)
 #endif
@@ -479,3 +494,4 @@
 };
 
 #endif
+
diff --git a/include/usage.h b/include/usage.h
index 13759d2..ac980bf 100644
--- a/include/usage.h
+++ b/include/usage.h
@@ -1,3 +1,19 @@
+#define addgroup_trivial_usage \
+	"[OPTIONS] <group_name>"
+#define addgroup_full_usage \
+	"Adds a group to the system" \
+	"Options:\n" \
+	    "\t-g\t\tspecify gid\n"
+
+#define adduser_trivial_usage \
+	"[OPTIONS] <user_name>"
+#define adduser_full_usage \
+	"Adds a user to the system" \
+	"Options:\n" \
+	    "\t-h\t\thome directory\n" \
+	    "\t-s\t\tshell\n" \
+	    "\t-g\t\tGECOS string\n"
+
 #define adjtimex_trivial_usage \
 	"[-q] [-o offset] [-f frequency] [-p timeconstant] [-t tick]"
 #define adjtimex_full_usage \
@@ -215,6 +231,15 @@
 #define deallocvt_full_usage \
 	 "Deallocate unused virtual terminal /dev/ttyN"
 
+#define delgroup_trivial_usage \
+	"GROUP"
+#define delgroup_full_usage \
+	 "Deletes group GROUP from the system"
+
+#define deluser_trivial_usage \
+	"USER"
+#define deluser_full_usage \
+	 "Deletes user USER from the system"
 
 #ifdef BB_FEATURE_HUMAN_READABLE
   #define USAGE_HUMAN_READABLE(a) a
@@ -533,6 +558,22 @@
         " esac\n" \
         "done\n"
 
+#define getty_trivial_usage \
+	"getty [OPTIONS]... baud_rate,... line [termtype]"
+#define getty_full_usage \
+	"\nOpens a tty, prompts for a login name, then invokes /bin/login\n\n" \
+	"Options:\n" \
+	"\t-h\t\tEnable hardware (RTS/CTS) flow control.\n" \
+	"\t-i\t\tDo not display /etc/issue before running login.\n" \
+	"\t-L\t\tLocal line, so do not do carrier detect.\n" \
+	"\t-m\t\tGet baud rate from modem's CONNECT status message.\n" \
+	"\t-w\t\tWait for a CR or LF before sending /etc/issue.\n" \
+	"\t-l login_app\tInvoke login_app instead of /bin/login.\n" \
+	"\t-t timeout\tTerminate after timeout if no username is read.\n" \
+	"\t-I initstring\tSets the init string to send before anything else.\n" \
+	"\t-H login_host\tLog login_host into the utmp file as the hostname."
+
+
 #define grep_trivial_usage \
 	"[-ihHnqvs] PATTERN [FILEs...]"
 #define grep_full_usage \
diff --git a/usage.h b/usage.h
index 13759d2..ac980bf 100644
--- a/usage.h
+++ b/usage.h
@@ -1,3 +1,19 @@
+#define addgroup_trivial_usage \
+	"[OPTIONS] <group_name>"
+#define addgroup_full_usage \
+	"Adds a group to the system" \
+	"Options:\n" \
+	    "\t-g\t\tspecify gid\n"
+
+#define adduser_trivial_usage \
+	"[OPTIONS] <user_name>"
+#define adduser_full_usage \
+	"Adds a user to the system" \
+	"Options:\n" \
+	    "\t-h\t\thome directory\n" \
+	    "\t-s\t\tshell\n" \
+	    "\t-g\t\tGECOS string\n"
+
 #define adjtimex_trivial_usage \
 	"[-q] [-o offset] [-f frequency] [-p timeconstant] [-t tick]"
 #define adjtimex_full_usage \
@@ -215,6 +231,15 @@
 #define deallocvt_full_usage \
 	 "Deallocate unused virtual terminal /dev/ttyN"
 
+#define delgroup_trivial_usage \
+	"GROUP"
+#define delgroup_full_usage \
+	 "Deletes group GROUP from the system"
+
+#define deluser_trivial_usage \
+	"USER"
+#define deluser_full_usage \
+	 "Deletes user USER from the system"
 
 #ifdef BB_FEATURE_HUMAN_READABLE
   #define USAGE_HUMAN_READABLE(a) a
@@ -533,6 +558,22 @@
         " esac\n" \
         "done\n"
 
+#define getty_trivial_usage \
+	"getty [OPTIONS]... baud_rate,... line [termtype]"
+#define getty_full_usage \
+	"\nOpens a tty, prompts for a login name, then invokes /bin/login\n\n" \
+	"Options:\n" \
+	"\t-h\t\tEnable hardware (RTS/CTS) flow control.\n" \
+	"\t-i\t\tDo not display /etc/issue before running login.\n" \
+	"\t-L\t\tLocal line, so do not do carrier detect.\n" \
+	"\t-m\t\tGet baud rate from modem's CONNECT status message.\n" \
+	"\t-w\t\tWait for a CR or LF before sending /etc/issue.\n" \
+	"\t-l login_app\tInvoke login_app instead of /bin/login.\n" \
+	"\t-t timeout\tTerminate after timeout if no username is read.\n" \
+	"\t-I initstring\tSets the init string to send before anything else.\n" \
+	"\t-H login_host\tLog login_host into the utmp file as the hostname."
+
+
 #define grep_trivial_usage \
 	"[-ihHnqvs] PATTERN [FILEs...]"
 #define grep_full_usage \