Massive cleanup to be able to boot Debian 6.0

Update license and copyright information details in all files.
Much cleanup by moving hard coded strings/data to #defines and using more
common default values for each such #define.

finit.c:
        o Make sdown[], startx[] allocated strings by default NULL
        o This fixes the issues where the shutdown handler segfaulted
        o Add ability to handle NULL input to build_cmd() by allocating space
        o Ignore kernel cmdline "quiet" if in debug mode
        o Add support for "network" stanza in finit.conf
        o Mount -n to skip removing /etc/mtab
        o Call swapon to enable swap if enabled in /etc/fstab
        o Cleanup /tmp, /var/run and /var/lock
        o Move sig_setup() *after* mount, sig_init() otoh runs early
        o Start initctl monitor before forking off startx/getty process
        o The startx process is now the console process. Only a getty is
          started when in debug mode. Otherwise only X is started if it
          is properly setup in /etc/finit.conf
        o NOTE: Currently X evdev does not work!
        o Support for /usr/sbin/services.sh has been replaced with finit
          now instead supporting builtin run-parts for /etc/finit.d/

helpers.c:
        o Bug fixes in run_parts() and also added chdir(oldpwd) at bottom.
        o New functions:
          - getuser() similar to getgroup()
          - cls() clear screen, only runs when not in debug mode
          - set_procname() used to set name "console" on console process
          - set_hostname() encapsulates /etc/hostname and sethostname()

signal.c:
        o Split sig_setup() in two: sig_init() and sig_setup()
          The former to be called as soon as possible, while latter is
          supposed to run when the base filesystem is properly up.
        o Remove hard coded distribution specific progress bar write()
        o Add debug messages to do_shutdown()
        o Remove any lingering sync files in sig_setup()

initctl.c:
        o Add debug messages and a new default: case to catch stray runlevels

Signed-off-by: Joachim Nilsson <troglobit@gmail.com>

helpers.c

@@ -1,3 +1,26 @@
+/* Misc. utility functions and C-library extensions to simplify finit system setup.
+ *
+ * Copyright (c) 2008-2010  Claudio Matsuoka <cmatsuoka@gmail.com>
+ * Copyright (c) 2008-2012  Joachim Nilsson <troglobit@gmail.com>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
 
 #include <string.h>
 #include <limits.h>
@@ -7,6 +30,7 @@
 #include <fcntl.h>
 #include <unistd.h>
 #include <sys/ioctl.h>
+#include <sys/prctl.h>
 #include <sys/socket.h>
 #include <net/if.h>
 #include <netinet/in.h>
@@ -19,7 +43,9 @@
 #endif
 
 #include <grp.h>
+#include <pwd.h>
 
+#include "finit.h"
 #include "helpers.h"
 
 /*
@@ -115,16 +141,21 @@ int run_parts(char *dir, ...)
 	DIR *d;
 	struct dirent *e;
 	struct stat st;
+	char *oldpwd = NULL;
 	char *ent[NUM_SCRIPTS];
 	int i, num = 0, argnum = 1;
 	char *args[NUM_ARGS];
 	va_list ap;
 
-	if (chdir(dir))
+	oldpwd = getcwd (NULL, 0);
+	if (chdir(dir)) {
+		if (oldpwd) free(oldpwd);
 		return -1;
-
-	if ((d = opendir(dir)) == NULL)
+	}
+	if ((d = opendir(dir)) == NULL) {
+		if (oldpwd) free(oldpwd);
 		return -1;
+	}
 
 	va_start(ap, dir);
 	while (argnum < NUM_ARGS && (args[argnum++] = va_arg(ap, char *)));
@@ -132,6 +163,7 @@ int run_parts(char *dir, ...)
 
 	while ((e = readdir(d))) {
 		if (e->d_type == DT_REG && stat(e->d_name, &st) == 0) {
+			_d("Found %s/%s ...", dir, e->d_name);
 			if (st.st_mode & S_IXUSR) {
 				ent[num++] = strdup(e->d_name);
 				if (num >= NUM_SCRIPTS)
@@ -142,23 +174,46 @@ int run_parts(char *dir, ...)
 
 	closedir(d);
 
-	if (num == 0)
+	if (num == 0) {
+		if (oldpwd) free(oldpwd);
 		return 0;
+	}
 
 	qsort(ent, num, sizeof(char *), cmp);
 
 	for (i = 0; i < num; i++) {
+		pid_t pid = 0;
+		int status;
+
 		args[0] = ent[i];
-		if (!fork()) {
+		args[1] = NULL;
+
+		pid = fork();
+		if (!pid) {
+			_d("Calling %s ...", ent[i]);
 			execv(ent[i], args);
 			exit(0);
 		}
-		wait(NULL);
+		waitpid(pid, &status, 0);
 		free(ent[i]);
 	}
 
+	chdir(oldpwd);
+	free(oldpwd);
+
 	return 0;
 }
+#endif /* BUILTIN_RUNPARTS */
+
+int getuser(char *s)
+{
+	struct passwd *usr;
+
+	if ((usr = getpwnam(s)) == NULL)
+		return -1;
+
+	return usr->pw_uid;
+}
 
 int getgroup(char *s)
 {
@@ -174,6 +229,14 @@ int getgroup(char *s)
  * Other convenience functions
  */
 
+void cls(void)
+{
+	static const char cls[] = "\e[2J\e[1;1H";
+
+	if (!debug)
+		fprintf (stderr, "%s", cls);
+}
+
 void chomp(char *s)
 {
 	char *x;
@@ -182,4 +245,33 @@ void chomp(char *s)
 		*x = 0;
 }
 
-#endif
+void set_procname(char *args[], char *name)
+{
+	size_t len = strlen(args[0]) + 1; /* Include terminating '\0' */
+
+	prctl(PR_SET_NAME, name, 0, 0, 0);
+	memset(args[0], 0, len);
+	strncpy(args[0], name, len);
+}
+
+void set_hostname(char *hostname)
+{
+	FILE *fp;
+
+	_d("Set hostname: %s", hostname);
+	if ((fp = fopen("/etc/hostname", "r")) != NULL) {
+		fgets(hostname, HOSTNAME_SIZE, fp);
+		chomp(hostname);
+		fclose(fp);
+	}
+
+	sethostname(hostname, strlen(hostname));
+}
+
+/**
+ * Local Variables:
+ *  version-control: t
+ *  indent-tabs-mode: t
+ *  c-file-style: "linux"
+ * End:
+ */