Adding upstream version 9.1.upstream/9.1

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

1 files changed, 1062 insertions, 0 deletions

diff --git a/tools/start-stop-daemon.c b/tools/start-stop-daemon.c
new file mode 100644
index 0000000..9f566bd
--- /dev/null
+++ b/tools/start-stop-daemon.c
@@ -0,0 +1,1062 @@
+// SPDX-License-Identifier: NONE
+/*
+ * A rewrite of the original Debian's start-stop-daemon Perl script
+ * in C (faster - it is executed many times during system startup).
+ *
+ * Written by Marek Michalkiewicz <marekm@i17linuxb.ists.pwr.wroc.pl>,
+ * public domain.  Based conceptually on start-stop-daemon.pl, by Ian
+ * Jackson <ijackson@gnu.ai.mit.edu>.  May be used and distributed
+ * freely for any purpose.  Changes by Christian Schwarz
+ * <schwarz@monet.m.isar.de>, to make output conform to the Debian
+ * Console Message Standard, also placed in public domain.  Minor
+ * changes by Klee Dienes <klee@debian.org>, also placed in the Public
+ * Domain.
+ *
+ * Changes by Ben Collins <bcollins@debian.org>, added --chuid, --background
+ * and --make-pidfile options, placed in public domain aswell.
+ *
+ * Port to OpenBSD by Sontri Tomo Huynh <huynh.29@osu.edu>
+ *                 and Andreas Schuldei <andreas@schuldei.org>
+ *
+ * Changes by Ian Jackson: added --retry (and associated rearrangements).
+ *
+ * Modified for Gentoo rc-scripts by Donny Davies <woodchip@gentoo.org>:
+ *   I removed the BSD/Hurd/OtherOS stuff, added #include <stddef.h>
+ *   and stuck in a #define VERSION "1.9.18".  Now it compiles without
+ *   the whole automake/config.h dance.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#ifdef HAVE_LXC
+#define _GNU_SOURCE
+#include <sched.h>
+#endif /* HAVE_LXC */
+
+#include <stddef.h>
+#undef VERSION
+#define VERSION "1.9.18"
+
+#define MIN_POLL_INTERVAL 20000 /*us*/
+
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdarg.h>
+#include <signal.h>
+#include <sys/stat.h>
+#include <dirent.h>
+#include <sys/time.h>
+#include <sys/queue.h>
+#include <unistd.h>
+#include <getopt.h>
+#include <pwd.h>
+#include <grp.h>
+#include <sys/ioctl.h>
+#include <sys/types.h>
+#include <termios.h>
+#include <fcntl.h>
+#include <limits.h>
+#include <assert.h>
+#include <ctype.h>
+#ifdef linux
+#include <linux/sched.h>
+#endif
+
+static int testmode = 0;
+static int quietmode = 0;
+static int exitnodo = 1;
+static int start = 0;
+static int stop = 0;
+static int background = 0;
+static int mpidfile = 0;
+static int signal_nr = 15;
+static const char *signal_str = NULL;
+static int user_id = -1;
+static int runas_uid = -1;
+static int runas_gid = -1;
+static const char *userspec = NULL;
+static char *changeuser = NULL;
+static const char *changegroup = NULL;
+static char *changeroot = NULL;
+static const char *cmdname = NULL;
+static char *execname = NULL;
+static char *startas = NULL;
+static const char *pidfile = NULL;
+static char what_stop[1024];
+static const char *schedule_str = NULL;
+static const char *progname = "";
+static int nicelevel = 0;
+
+static struct stat exec_stat;
+
+struct pid_list {
+	struct pid_list *next;
+	pid_t pid;
+};
+
+static struct pid_list *found = NULL;
+static struct pid_list *killed = NULL;
+
+struct schedule_item {
+	enum { sched_timeout, sched_signal, sched_goto, sched_forever } type;
+	int value; /* seconds, signal no., or index into array */
+	/* sched_forever is only seen within parse_schedule and callees */
+};
+
+static int schedule_length;
+static struct schedule_item *schedule = NULL;
+
+LIST_HEAD(namespace_head, namespace);
+
+struct namespace
+{
+	LIST_ENTRY(namespace) list;
+	const char *path;
+	int nstype;
+};
+
+static struct namespace_head namespace_head;
+
+static void *xmalloc(int size);
+static void push(struct pid_list **list, pid_t pid);
+static void do_help(void);
+static void parse_options(int argc, char *const *argv);
+static int pid_is_user(pid_t pid, uid_t uid);
+static int pid_is_cmd(pid_t pid, const char *name);
+static void check(pid_t pid);
+static void do_pidfile(const char *name);
+static void do_stop(int signal_nr, int quietmode, int *n_killed,
+		    int *n_notkilled, int retry_nr);
+static int pid_is_exec(pid_t pid, const struct stat *esb);
+
+#ifdef __GNUC__
+static void fatal(const char *format, ...)
+	__attribute__((noreturn, format(printf, 1, 2)));
+static void badusage(const char *msg) __attribute__((noreturn));
+#else
+static void fatal(const char *format, ...);
+static void badusage(const char *msg);
+#endif
+
+/* This next part serves only to construct the TVCALC macro, which
+ * is used for doing arithmetic on struct timeval's.  It works like this:
+ *   TVCALC(result, expression);
+ * where result is a struct timeval (and must be an lvalue) and
+ * expression is the single expression for both components.  In this
+ * expression you can use the special values TVELEM, which when fed a
+ * const struct timeval* gives you the relevant component, and
+ * TVADJUST.  TVADJUST is necessary when subtracting timevals, to make
+ * it easier to renormalise.  Whenver you subtract timeval elements,
+ * you must make sure that TVADJUST is added to the result of the
+ * subtraction (before any resulting multiplication or what have you).
+ * TVELEM must be linear in TVADJUST.
+ */
+typedef long tvselector(const struct timeval *);
+static long tvselector_sec(const struct timeval *tv)
+{
+	return tv->tv_sec;
+}
+static long tvselector_usec(const struct timeval *tv)
+{
+	return tv->tv_usec;
+}
+#define TVCALC_ELEM(result, expr, sec, adj)                                    \
+	{                                                                      \
+		const long TVADJUST = adj;                                     \
+		long (*const TVELEM)(const struct timeval *) =                 \
+			tvselector_##sec;                                      \
+		(result).tv_##sec = (expr);                                    \
+	}
+#define TVCALC(result, expr)                                                   \
+	do {                                                                   \
+		TVCALC_ELEM(result, expr, sec, (-1));                          \
+		TVCALC_ELEM(result, expr, usec, (+1000000));                   \
+		(result).tv_sec += (result).tv_usec / 1000000;                 \
+		(result).tv_usec %= 1000000;                                   \
+	} while (0)
+
+
+static void fatal(const char *format, ...)
+{
+	va_list arglist;
+
+	fprintf(stderr, "%s: ", progname);
+	va_start(arglist, format);
+	vfprintf(stderr, format, arglist);
+	va_end(arglist);
+	putc('\n', stderr);
+	exit(2);
+}
+
+
+static void *xmalloc(int size)
+{
+	void *ptr;
+
+	ptr = malloc(size);
+	if (ptr)
+		return ptr;
+	fatal("malloc(%d) failed", size);
+}
+
+static void xgettimeofday(struct timeval *tv)
+{
+	if (gettimeofday(tv, 0) != 0)
+		fatal("gettimeofday failed: %s", strerror(errno));
+}
+
+static void push(struct pid_list **list, pid_t pid)
+{
+	struct pid_list *p;
+
+	p = xmalloc(sizeof(*p));
+	p->next = *list;
+	p->pid = pid;
+	*list = p;
+}
+
+static void clear(struct pid_list **list)
+{
+	struct pid_list *here, *next;
+
+	for (here = *list; here != NULL; here = next) {
+		next = here->next;
+		free(here);
+	}
+
+	*list = NULL;
+}
+
+#ifdef linux
+static const char *next_dirname(const char *s)
+{
+	const char *cur;
+
+	cur = s;
+
+	if (*cur != '\0') {
+		for (; *cur != '/'; ++cur)
+			if (*cur == '\0')
+				return cur;
+
+		for (; *cur == '/'; ++cur)
+			;
+	}
+
+	return cur;
+}
+
+static void add_namespace(const char *path)
+{
+	int nstype;
+	const char *nsdirname, *nsname, *cur;
+	struct namespace *namespace;
+
+	cur = path;
+	nsdirname = nsname = "";
+
+	while ((cur = next_dirname(cur))[0] != '\0') {
+		nsdirname = nsname;
+		nsname = cur;
+	}
+
+	if (!strncmp(nsdirname, "ipcns/", strlen("ipcns/")))
+		nstype = CLONE_NEWIPC;
+	else if (!strncmp(nsdirname, "netns/", strlen("netns/")))
+		nstype = CLONE_NEWNET;
+	else if (!strncmp(nsdirname, "utcns/", strlen("utcns/")))
+		nstype = CLONE_NEWUTS;
+	else
+		badusage("invalid namepspace path");
+
+	namespace = xmalloc(sizeof(*namespace));
+	namespace->path = path;
+	namespace->nstype = nstype;
+	LIST_INSERT_HEAD(&namespace_head, namespace, list);
+}
+#endif
+
+#ifdef HAVE_LXC
+static void set_namespaces(void)
+{
+	struct namespace *namespace;
+	int fd;
+
+	LIST_FOREACH (namespace, &namespace_head, list) {
+		if ((fd = open(namespace->path, O_RDONLY)) == -1)
+			fatal("open namespace %s: %s", namespace->path,
+			      strerror(errno));
+		if (setns(fd, namespace->nstype) == -1)
+			fatal("setns %s: %s", namespace->path, strerror(errno));
+	}
+}
+#else
+static void set_namespaces(void)
+{
+	if (!LIST_EMPTY(&namespace_head))
+		fatal("LCX namespaces not supported");
+}
+#endif
+
+static void do_help(void)
+{
+	printf("start-stop-daemon " VERSION
+	       " for Debian - small and fast C version written by\n"
+	       "Marek Michalkiewicz <marekm@i17linuxb.ists.pwr.wroc.pl>, public domain.\n"
+	       "\n"
+	       "Usage:\n"
+	       "  start-stop-daemon -S|--start options ... -- arguments ...\n"
+	       "  start-stop-daemon -K|--stop options ...\n"
+	       "  start-stop-daemon -H|--help\n"
+	       "  start-stop-daemon -V|--version\n"
+	       "\n"
+	       "Options (at least one of --exec|--pidfile|--user is required):\n"
+	       "  -x|--exec <executable>        program to start/check if it is running\n"
+	       "  -p|--pidfile <pid-file>       pid file to check\n"
+	       "  -c|--chuid <name|uid[:group|gid]>\n"
+	       "  		change to this user/group before starting process\n"
+	       "  -u|--user <username>|<uid>    stop processes owned by this user\n"
+	       "  -n|--name <process-name>      stop processes with this name\n"
+	       "  -s|--signal <signal>          signal to send (default TERM)\n"
+	       "  -a|--startas <pathname>       program to start (default is <executable>)\n"
+	       "  -N|--nicelevel <incr>         add incr to the process's nice level\n"
+	       "  -b|--background               force the process to detach\n"
+	       "  -m|--make-pidfile             create the pidfile before starting\n"
+	       "  -R|--retry <schedule>         check whether processes die, and retry\n"
+	       "  -t|--test                     test mode, don't do anything\n"
+	       "  -o|--oknodo                   exit status 0 (not 1) if nothing done\n"
+	       "  -q|--quiet                    be more quiet\n"
+	       "  -v|--verbose                  be more verbose\n"
+	       "Retry <schedule> is <item>|/<item>/... where <item> is one of\n"
+	       " -<signal-num>|[-]<signal-name>  send that signal\n"
+	       " <timeout>                       wait that many seconds\n"
+	       " forever                         repeat remainder forever\n"
+	       "or <schedule> may be just <timeout>, meaning <signal>/<timeout>/KILL/<timeout>\n"
+	       "\n"
+	       "Exit status:  0 = done      1 = nothing done (=> 0 if --oknodo)\n"
+	       "              3 = trouble   2 = with --retry, processes wouldn't die\n");
+}
+
+
+static void badusage(const char *msg)
+{
+	if (msg)
+		fprintf(stderr, "%s: %s\n", progname, msg);
+	fprintf(stderr, "Try `%s --help' for more information.\n", progname);
+	exit(3);
+}
+
+struct sigpair {
+	const char *name;
+	int signal;
+};
+
+const struct sigpair siglist[] = {
+	{"ABRT", SIGABRT}, {"ALRM", SIGALRM}, {"FPE", SIGFPE},
+	{"HUP", SIGHUP},   {"ILL", SIGILL},   {"INT", SIGINT},
+	{"KILL", SIGKILL}, {"PIPE", SIGPIPE}, {"QUIT", SIGQUIT},
+	{"SEGV", SIGSEGV}, {"TERM", SIGTERM}, {"USR1", SIGUSR1},
+	{"USR2", SIGUSR2}, {"CHLD", SIGCHLD}, {"CONT", SIGCONT},
+	{"STOP", SIGSTOP}, {"TSTP", SIGTSTP}, {"TTIN", SIGTTIN},
+	{"TTOU", SIGTTOU}};
+
+static int parse_integer(const char *string, int *value_r)
+{
+	unsigned long ul;
+	char *ep;
+
+	if (!string[0])
+		return -1;
+
+	ul = strtoul(string, &ep, 10);
+	if (ul > INT_MAX || *ep != '\0')
+		return -1;
+
+	*value_r = ul;
+	return 0;
+}
+
+static int parse_signal(const char *signal_str, int *signal_nr)
+{
+	unsigned int i;
+
+	if (parse_integer(signal_str, signal_nr) == 0)
+		return 0;
+
+	for (i = 0; i < sizeof(siglist) / sizeof(siglist[0]); i++) {
+		if (strcmp(signal_str, siglist[i].name) == 0) {
+			*signal_nr = siglist[i].signal;
+			return 0;
+		}
+	}
+	return -1;
+}
+
+static void parse_schedule_item(const char *string, struct schedule_item *item)
+{
+	const char *after_hyph;
+
+	if (!strcmp(string, "forever")) {
+		item->type = sched_forever;
+	} else if (isdigit((unsigned char)string[0])) {
+		item->type = sched_timeout;
+		if (parse_integer(string, &item->value) != 0)
+			badusage("invalid timeout value in schedule");
+	} else if ((after_hyph = string + (string[0] == '-'))
+		   && parse_signal(after_hyph, &item->value) == 0) {
+		item->type = sched_signal;
+	} else {
+		badusage(
+			"invalid schedule item (must be [-]<signal-name>, -<signal-number>, <timeout> or `forever'");
+	}
+}
+
+static void parse_schedule(const char *schedule_str)
+{
+	char item_buf[20];
+	const char *slash;
+	int count, repeatat;
+	ptrdiff_t str_len;
+
+	count = 0;
+	for (slash = schedule_str; *slash; slash++)
+		if (*slash == '/')
+			count++;
+
+	schedule_length = (count == 0) ? 4 : count + 1;
+	schedule = xmalloc(sizeof(*schedule) * schedule_length);
+
+	if (count == 0) {
+		schedule[0].type = sched_signal;
+		schedule[0].value = signal_nr;
+		parse_schedule_item(schedule_str, &schedule[1]);
+		if (schedule[1].type != sched_timeout) {
+			badusage(
+				"--retry takes timeout, or schedule list of at least two items");
+		}
+		schedule[2].type = sched_signal;
+		schedule[2].value = SIGKILL;
+		schedule[3] = schedule[1];
+	} else {
+		count = 0;
+		repeatat = -1;
+		while (schedule_str != NULL) {
+			slash = strchr(schedule_str, '/');
+			str_len = slash ? slash - schedule_str
+					: (ptrdiff_t)strlen(schedule_str);
+			if (str_len >= (ptrdiff_t)sizeof(item_buf))
+				badusage(
+					"invalid schedule item: far too long (you must delimit items with slashes)");
+			memcpy(item_buf, schedule_str, str_len);
+			item_buf[str_len] = 0;
+			schedule_str = slash ? slash + 1 : NULL;
+
+			parse_schedule_item(item_buf, &schedule[count]);
+			if (schedule[count].type == sched_forever) {
+				if (repeatat >= 0)
+					badusage(
+						"invalid schedule: `forever' appears more than once");
+				repeatat = count;
+				continue;
+			}
+			count++;
+		}
+		if (repeatat >= 0) {
+			schedule[count].type = sched_goto;
+			schedule[count].value = repeatat;
+			count++;
+		}
+		assert(count == schedule_length);
+	}
+}
+
+static void parse_options(int argc, char *const *argv)
+{
+	static struct option longopts[] = {
+		{"help", 0, NULL, 'H'},       {"stop", 0, NULL, 'K'},
+		{"start", 0, NULL, 'S'},      {"version", 0, NULL, 'V'},
+		{"startas", 1, NULL, 'a'},    {"name", 1, NULL, 'n'},
+		{"oknodo", 0, NULL, 'o'},     {"pidfile", 1, NULL, 'p'},
+		{"quiet", 0, NULL, 'q'},      {"signal", 1, NULL, 's'},
+		{"test", 0, NULL, 't'},       {"user", 1, NULL, 'u'},
+		{"chroot", 1, NULL, 'r'},     {"namespace", 1, NULL, 'd'},
+		{"verbose", 0, NULL, 'v'},    {"exec", 1, NULL, 'x'},
+		{"chuid", 1, NULL, 'c'},      {"nicelevel", 1, NULL, 'N'},
+		{"background", 0, NULL, 'b'}, {"make-pidfile", 0, NULL, 'm'},
+		{"retry", 1, NULL, 'R'},      {NULL, 0, NULL, 0}};
+	int c;
+
+	for (;;) {
+		c = getopt_long(argc, argv,
+				"HKSVa:n:op:qr:d:s:tu:vx:c:N:bmR:", longopts,
+				(int *)0);
+		if (c == -1)
+			break;
+		switch (c) {
+		case 'H': /* --help */
+			do_help();
+			exit(0);
+		case 'K': /* --stop */
+			stop = 1;
+			break;
+		case 'S': /* --start */
+			start = 1;
+			break;
+		case 'V': /* --version */
+			printf("start-stop-daemon " VERSION "\n");
+			exit(0);
+		case 'a': /* --startas <pathname> */
+			startas = optarg;
+			break;
+		case 'n': /* --name <process-name> */
+			cmdname = optarg;
+			break;
+		case 'o': /* --oknodo */
+			exitnodo = 0;
+			break;
+		case 'p': /* --pidfile <pid-file> */
+			pidfile = optarg;
+			break;
+		case 'q': /* --quiet */
+			quietmode = 1;
+			break;
+		case 's': /* --signal <signal> */
+			signal_str = optarg;
+			break;
+		case 't': /* --test */
+			testmode = 1;
+			break;
+		case 'u': /* --user <username>|<uid> */
+			userspec = optarg;
+			break;
+		case 'v': /* --verbose */
+			quietmode = -1;
+			break;
+		case 'x': /* --exec <executable> */
+			execname = optarg;
+			break;
+		case 'c': /* --chuid <username>|<uid> */
+			changeuser = strtok(optarg, ":");
+			changegroup = strtok(NULL, ":");
+			break;
+		case 'r': /* --chroot /new/root */
+			changeroot = optarg;
+			break;
+		case 'd': /* --namespace /.../<ipcns>|<netns>|<utsns>/name */
+#ifdef linux
+			add_namespace(optarg);
+#endif
+			break;
+		case 'N': /* --nice */
+			nicelevel = atoi(optarg);
+			break;
+		case 'b': /* --background */
+			background = 1;
+			break;
+		case 'm': /* --make-pidfile */
+			mpidfile = 1;
+			break;
+		case 'R': /* --retry <schedule>|<timeout> */
+			schedule_str = optarg;
+			break;
+		default:
+			badusage(NULL); /* message printed by getopt */
+		}
+	}
+
+	if (signal_str != NULL) {
+		if (parse_signal(signal_str, &signal_nr) != 0)
+			badusage(
+				"signal value must be numeric or name of signal (KILL, INTR, ...)");
+	}
+
+	if (schedule_str != NULL) {
+		parse_schedule(schedule_str);
+	}
+
+	if (start == stop)
+		badusage("need one of --start or --stop");
+
+	if (!execname && !pidfile && !userspec && !cmdname)
+		badusage(
+			"need at least one of --exec, --pidfile, --user or --name");
+
+	if (!startas)
+		startas = execname;
+
+	if (start && !startas)
+		badusage("--start needs --exec or --startas");
+
+	if (mpidfile && pidfile == NULL)
+		badusage("--make-pidfile is only relevant with --pidfile");
+
+	if (background && !start)
+		badusage("--background is only relevant with --start");
+}
+
+static int pid_is_exec(pid_t pid, const struct stat *esb)
+{
+	struct stat sb;
+	char buf[PATH_MAX];
+
+	snprintf(buf, sizeof(buf), "/proc/%ld/exe", (long)pid);
+	if (stat(buf, &sb) != 0)
+		return 0;
+	return (sb.st_dev == esb->st_dev && sb.st_ino == esb->st_ino);
+}
+
+
+static int pid_is_user(pid_t pid, uid_t uid)
+{
+	struct stat sb;
+	char buf[PATH_MAX];
+
+	snprintf(buf, sizeof(buf), "/proc/%ld", (long)pid);
+	if (stat(buf, &sb) != 0)
+		return 0;
+	return (sb.st_uid == uid);
+}
+
+
+static int pid_is_cmd(pid_t pid, const char *name)
+{
+	char buf[PATH_MAX];
+	FILE *f;
+	int c;
+
+	snprintf(buf, sizeof(buf), "/proc/%ld/stat", (long)pid);
+	f = fopen(buf, "r");
+	if (!f)
+		return 0;
+	while ((c = getc(f)) != EOF && c != '(')
+		;
+	if (c != '(') {
+		fclose(f);
+		return 0;
+	}
+	/* this hopefully handles command names containing ')' */
+	while ((c = getc(f)) != EOF && c == *name)
+		name++;
+	fclose(f);
+	return (c == ')' && *name == '\0');
+}
+
+
+static void check(pid_t pid)
+{
+	if (execname && !pid_is_exec(pid, &exec_stat))
+		return;
+	if (userspec && !pid_is_user(pid, user_id))
+		return;
+	if (cmdname && !pid_is_cmd(pid, cmdname))
+		return;
+	push(&found, pid);
+}
+
+static void do_pidfile(const char *name)
+{
+	FILE *f;
+	long pid;
+
+	f = fopen(name, "r");
+	if (f) {
+		if (fscanf(f, "%ld", &pid) == 1)
+			check((pid_t)pid);
+		fclose(f);
+	} else if (errno != ENOENT)
+		fatal("open pidfile %s: %s", name, strerror(errno));
+}
+
+/* WTA: this  needs to be an autoconf check for /proc/pid existance.
+ */
+static void do_procinit(void)
+{
+	DIR *procdir;
+	struct dirent *entry;
+	int foundany;
+	long pid;
+
+	procdir = opendir("/proc");
+	if (!procdir)
+		fatal("opendir /proc: %s", strerror(errno));
+
+	foundany = 0;
+	while ((entry = readdir(procdir)) != NULL) {
+		if (sscanf(entry->d_name, "%ld", &pid) != 1)
+			continue;
+		foundany++;
+		check((pid_t)pid);
+	}
+	closedir(procdir);
+	if (!foundany)
+		fatal("nothing in /proc - not mounted?");
+}
+
+static void do_findprocs(void)
+{
+	clear(&found);
+
+	if (pidfile)
+		do_pidfile(pidfile);
+	else
+		do_procinit();
+}
+
+/* return 1 on failure */
+static void do_stop(int signal_nr, int quietmode, int *n_killed,
+		    int *n_notkilled, int retry_nr)
+{
+	struct pid_list *p;
+
+	do_findprocs();
+
+	*n_killed = 0;
+	*n_notkilled = 0;
+
+	if (!found)
+		return;
+
+	clear(&killed);
+
+	for (p = found; p; p = p->next) {
+		if (testmode)
+			printf("Would send signal %d to %ld.\n", signal_nr,
+			       (long)p->pid);
+		else if (kill(p->pid, signal_nr) == 0) {
+			push(&killed, p->pid);
+			(*n_killed)++;
+		} else {
+			printf("%s: warning: failed to kill %ld: %s\n",
+			       progname, (long)p->pid, strerror(errno));
+			(*n_notkilled)++;
+		}
+	}
+	if (quietmode < 0 && killed) {
+		printf("Stopped %s (pid", what_stop);
+		for (p = killed; p; p = p->next)
+			printf(" %ld", (long)p->pid);
+		putchar(')');
+		if (retry_nr > 0)
+			printf(", retry #%d", retry_nr);
+		printf(".\n");
+	}
+}
+
+
+static void set_what_stop(const char *str)
+{
+	strncpy(what_stop, str, sizeof(what_stop));
+	what_stop[sizeof(what_stop) - 1] = '\0';
+}
+
+static int run_stop_schedule(void)
+{
+	int r, position, n_killed, n_notkilled, value, ratio, anykilled,
+		retry_nr;
+	struct timeval stopat, before, after, interval, maxinterval;
+
+	if (testmode) {
+		if (schedule != NULL) {
+			printf("Ignoring --retry in test mode\n");
+			schedule = NULL;
+		}
+	}
+
+	if (cmdname)
+		set_what_stop(cmdname);
+	else if (execname)
+		set_what_stop(execname);
+	else if (pidfile)
+		sprintf(what_stop, "process in pidfile `%.200s'", pidfile);
+	else if (userspec)
+		sprintf(what_stop, "process(es) owned by `%.200s'", userspec);
+	else
+		fatal("internal error, please report");
+
+	anykilled = 0;
+	retry_nr = 0;
+	n_killed = 0;
+
+	if (schedule == NULL) {
+		do_stop(signal_nr, quietmode, &n_killed, &n_notkilled, 0);
+		if (n_notkilled > 0 && quietmode <= 0)
+			printf("%d pids were not killed\n", n_notkilled);
+		if (n_killed)
+			anykilled = 1;
+		goto x_finished;
+	}
+
+	for (position = 0; position < schedule_length;) {
+		value = schedule[position].value;
+		n_notkilled = 0;
+
+		switch (schedule[position].type) {
+
+		case sched_goto:
+			position = value;
+			continue;
+
+		case sched_signal:
+			do_stop(value, quietmode, &n_killed, &n_notkilled,
+				retry_nr++);
+			if (!n_killed)
+				goto x_finished;
+			else
+				anykilled = 1;
+			goto next_item;
+
+		case sched_timeout:
+			/* We want to keep polling for the processes, to see if
+			 * they've exited,
+			 * or until the timeout expires.
+			 *
+			 * This is a somewhat complicated algorithm to try to
+			 * ensure that we
+			 * notice reasonably quickly when all the processes have
+			 * exited, but
+			 * don't spend too much CPU time polling.  In
+			 * particular, on a fast
+			 * machine with quick-exiting daemons we don't want to
+			 * delay system
+			 * shutdown too much, whereas on a slow one, or where
+			 * processes are
+			 * taking some time to exit, we want to increase the
+			 * polling
+			 * interval.
+			 *
+			 * The algorithm is as follows: we measure the elapsed
+			 * time it takes
+			 * to do one poll(), and wait a multiple of this time
+			 * for the next
+			 * poll.  However, if that would put us past the end of
+			 * the timeout
+			 * period we wait only as long as the timeout period,
+			 * but in any case
+			 * we always wait at least MIN_POLL_INTERVAL (20ms).
+			 * The multiple
+			 * (`ratio') starts out as 2, and increases by 1 for
+			 * each poll to a
+			 * maximum of 10; so we use up to between 30% and 10% of
+			 * the
+			 * machine's resources (assuming a few reasonable things
+			 * about system
+			 * performance).
+			 */
+			xgettimeofday(&stopat);
+			stopat.tv_sec += value;
+			ratio = 1;
+			for (;;) {
+				xgettimeofday(&before);
+				if (timercmp(&before, &stopat, >))
+					goto next_item;
+
+				do_stop(0, 1, &n_killed, &n_notkilled, 0);
+				if (!n_killed)
+					goto x_finished;
+
+				xgettimeofday(&after);
+
+				if (!timercmp(&after, &stopat, <))
+					goto next_item;
+
+				if (ratio < 10)
+					ratio++;
+
+				TVCALC(interval,
+				       ratio * (TVELEM(&after) - TVELEM(&before)
+						+ TVADJUST));
+				TVCALC(maxinterval,
+				       TVELEM(&stopat) - TVELEM(&after)
+					       + TVADJUST);
+
+				if (timercmp(&interval, &maxinterval, >))
+					interval = maxinterval;
+
+				if (interval.tv_sec == 0
+				    && interval.tv_usec <= MIN_POLL_INTERVAL)
+					interval.tv_usec = MIN_POLL_INTERVAL;
+
+				r = select(0, 0, 0, 0, &interval);
+				if (r < 0 && errno != EINTR)
+					fatal("select() failed for pause: %s",
+					      strerror(errno));
+			}
+
+		case sched_forever:
+			assert(!"schedule[].type value must be valid");
+		}
+
+	next_item:
+		position++;
+	}
+
+	if (quietmode <= 0)
+		printf("Program %s, %d process(es), refused to die.\n",
+		       what_stop, n_killed);
+
+	return 2;
+
+x_finished:
+	if (!anykilled) {
+		if (quietmode <= 0)
+			printf("No %s found running; none killed.\n",
+			       what_stop);
+		return exitnodo;
+	} else {
+		return 0;
+	}
+}
+
+/*
+int main(int argc, char **argv) NONRETURNING;
+*/
+
+int main(int argc, char **argv)
+{
+	progname = argv[0];
+
+	LIST_INIT(&namespace_head);
+
+	parse_options(argc, argv);
+	argc -= optind;
+	argv += optind;
+
+	if (execname && stat(execname, &exec_stat))
+		fatal("stat %s: %s", execname, strerror(errno));
+
+	if (userspec && sscanf(userspec, "%d", &user_id) != 1) {
+		struct passwd *pw;
+
+		pw = getpwnam(userspec);
+		if (!pw)
+			fatal("user `%s' not found\n", userspec);
+
+		user_id = pw->pw_uid;
+	}
+
+	if (changegroup && sscanf(changegroup, "%d", &runas_gid) != 1) {
+		struct group *gr = getgrnam(changegroup);
+		if (!gr)
+			fatal("group `%s' not found\n", changegroup);
+		runas_gid = gr->gr_gid;
+	}
+	if (changeuser && sscanf(changeuser, "%d", &runas_uid) != 1) {
+		struct passwd *pw = getpwnam(changeuser);
+		if (!pw)
+			fatal("user `%s' not found\n", changeuser);
+		runas_uid = pw->pw_uid;
+		if (changegroup
+		    == NULL) { /* pass the default group of this user */
+			changegroup = ""; /* just empty */
+			runas_gid = pw->pw_gid;
+		}
+	}
+
+	if (stop) {
+		int i = run_stop_schedule();
+		exit(i);
+	}
+
+	do_findprocs();
+
+	if (found) {
+		if (quietmode <= 0)
+			printf("%s already running.\n", execname);
+		exit(exitnodo);
+	}
+	if (testmode) {
+		printf("Would start %s ", startas);
+		while (argc-- > 0)
+			printf("%s ", *argv++);
+		if (changeuser != NULL) {
+			printf(" (as user %s[%d]", changeuser, runas_uid);
+			if (changegroup != NULL)
+				printf(", and group %s[%d])", changegroup,
+				       runas_gid);
+			else
+				printf(")");
+		}
+		if (changeroot != NULL)
+			printf(" in directory %s", changeroot);
+		if (nicelevel)
+			printf(", and add %i to the priority", nicelevel);
+		printf(".\n");
+		exit(0);
+	}
+	if (quietmode < 0)
+		printf("Starting %s...\n", startas);
+	*--argv = startas;
+	if (changeroot != NULL) {
+		if (chdir(changeroot) < 0)
+			fatal("Unable to chdir() to %s", changeroot);
+		if (chroot(changeroot) < 0)
+			fatal("Unable to chroot() to %s", changeroot);
+	}
+	if (changeuser != NULL) {
+		if (setgid(runas_gid))
+			fatal("Unable to set gid to %d", runas_gid);
+		if (initgroups(changeuser, runas_gid))
+			fatal("Unable to set initgroups() with gid %d",
+			      runas_gid);
+		if (setuid(runas_uid))
+			fatal("Unable to set uid to %s", changeuser);
+	}
+
+	if (background) { /* ok, we need to detach this process */
+		int i, fd;
+		if (quietmode < 0)
+			printf("Detaching to start %s...", startas);
+		i = fork();
+		if (i < 0) {
+			fatal("Unable to fork.\n");
+		}
+		if (i) { /* parent */
+			if (quietmode < 0)
+				printf("done.\n");
+			exit(0);
+		}
+		/* child continues here */
+		/* now close all extra fds */
+		for (i = getdtablesize() - 1; i >= 0; --i)
+			close(i);
+		/* change tty */
+		fd = open("/dev/tty", O_RDWR);
+		if (fd >= 0) {
+			if (ioctl(fd, TIOCNOTTY, 0) < 0)
+				printf("ioctl TIOCNOTTY failed: %s\n",
+				       strerror(errno));
+			close(fd);
+		}
+		chdir("/");
+		umask(022);    /* set a default for dumb programs */
+		setpgid(0, 0); /* set the process group */
+		fd = open("/dev/null", O_RDWR); /* stdin */
+		if (fd >= 0) {
+			dup(fd);		/* stdout */
+			dup(fd);		/* stderr */
+		}
+	}
+	if (nicelevel) {
+		errno = 0;
+		if (nice(nicelevel) < 0 && errno)
+			fatal("Unable to alter nice level by %i: %s", nicelevel,
+			      strerror(errno));
+	}
+	if (mpidfile
+	    && pidfile != NULL) { /* user wants _us_ to make the pidfile :) */
+		FILE *pidf = fopen(pidfile, "w");
+		pid_t pidt = getpid();
+		if (pidf == NULL)
+			fatal("Unable to open pidfile `%s' for writing: %s",
+			      pidfile, strerror(errno));
+		fprintf(pidf, "%ld\n", (long)pidt);
+		fclose(pidf);
+	}
+	set_namespaces();
+	execv(startas, argv);
+	fatal("Unable to start %s: %s", startas, strerror(errno));
+}