Introduce cbasename so we don't have to strdup(basename) and free all the time.

13 files changed, 47 insertions, 102 deletions

diff --git a/src/_usage.c b/src/_usage.c
index ce733a9..b079e32 100644
--- a/src/_usage.c
+++ b/src/_usage.c
@@ -29,6 +29,7 @@ static void usage (int exit_status)
 {
 	const char * const has_arg[] = { "", "<arg>", "[arg]" };
 	int i;
+
 	printf ("Usage: %s [options] ", applet);
 #ifdef extraopts
 	printf (extraopts);
diff --git a/src/checkown.c b/src/checkown.c
index ecec917..f7dd9e6 100644
--- a/src/checkown.c
+++ b/src/checkown.c
@@ -30,8 +30,6 @@
  * SUCH DAMAGE.
  */
 
-#define APPLET "checkown"
-
 #include <sys/types.h>
 #include <sys/stat.h>
 #include <errno.h>
@@ -48,7 +46,7 @@
 #include "einfo.h"
 #include "rc-misc.h"
 
-static char *applet = NULL;
+static const char *applet;
 
 static int do_check (char *path, uid_t uid, gid_t gid, mode_t mode, int file)
 {
@@ -189,10 +187,9 @@ int checkown (int argc, char **argv)
 	struct group *gr = NULL;
 	bool file = 0;
 
+	applet = cbasename (argv[0]);
 	int retval = EXIT_SUCCESS;
 
-	applet = argv[0];
-
 	while ((opt = getopt_long (argc, argv, getoptstring,
 							   longopts, (int *) 0)) != -1)
 	{
diff --git a/src/fstabinfo.c b/src/fstabinfo.c
index 9782f9d..56957c4 100644
--- a/src/fstabinfo.c
+++ b/src/fstabinfo.c
@@ -31,7 +31,6 @@
 
 #include <errno.h>
 #include <getopt.h>
-#include <libgen.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
@@ -87,7 +86,7 @@ static struct mntent *getmntfile (const char *file)
 }
 #endif
 
-static const char *applet;
+static const char *applet = NULL;
 
 #include "_usage.h"
 #define getoptstring "bmop:t:" getoptstring_COMMON
@@ -129,7 +128,7 @@ int fstabinfo (int argc, char **argv)
 	char *file;
 	bool filtered = false;
 
-	applet = basename (argv[0]);
+	applet = cbasename (argv[0]); 
 
 	/* Ensure that we are only quiet when explicitly told to be */
 	unsetenv ("EINFO_QUIET");
diff --git a/src/librc-daemon.c b/src/librc-daemon.c
index 30853f2..cc8e93f 100644
--- a/src/librc-daemon.c
+++ b/src/librc-daemon.c
@@ -313,7 +313,6 @@ bool rc_service_daemon_set (const char *service, const char *exec,
 							const char *name, const char *pidfile,
 							bool started)
 {
-	char *svc;
 	char *dirpath;
 	char *file = NULL;
 	int i;
@@ -330,10 +329,9 @@ bool rc_service_daemon_set (const char *service, const char *exec,
 		errno = EINVAL;
 		return (false);
 	}
-	svc = xstrdup (service);
+
 	dirpath = rc_strcatpaths (RC_SVCDIR, "daemons",
-							  basename (svc), (char *) NULL);
-	free (svc);
+							  cbasename (service), (char *) NULL);
 
 	if (exec) {
 		i = strlen (exec) + 6;
@@ -417,17 +415,14 @@ bool rc_service_started_daemon (const char *service, const char *exec,
 	int i;
 	char *mexec;
 	bool retval = false;
-	char *svc;
 	DIR *dp;
 	struct dirent *d;
 
 	if (! service || ! exec)
 		return (false);
 
-	svc = xstrdup (service);
-	dirpath = rc_strcatpaths (RC_SVCDIR, "daemons", basename (svc),
+	dirpath = rc_strcatpaths (RC_SVCDIR, "daemons", cbasename (service),
 							  (char *) NULL);
-	free (svc);
 	
 	i = strlen (exec) + 6;
 	mexec = xmalloc (sizeof (char) * i);
@@ -474,15 +469,12 @@ bool rc_service_daemons_crashed (const char *service)
 	char *p;
 	char *token;
 	bool retval = false;
-	char *svc;
 
 	if (! service)
 		return (false);
 
-	svc = xstrdup (service);
-	dirpath = rc_strcatpaths (RC_SVCDIR, "daemons", basename (svc),
+	dirpath = rc_strcatpaths (RC_SVCDIR, "daemons", cbasename (service),
 							  (char *) NULL);
-	free (svc);
 
 	if (! (dp = opendir (dirpath))) {
 		free (dirpath);
diff --git a/src/librc.c b/src/librc.c
index 9330a30..8380ebd 100644
--- a/src/librc.c
+++ b/src/librc.c
@@ -378,15 +378,12 @@ bool rc_service_in_runlevel (const char *service, const char *runlevel)
 {
 	char *file;
 	bool retval;
-	char *svc;
 
 	if (! runlevel || ! service)
 		return (false);
 
-	svc = xstrdup (service);
-	file = rc_strcatpaths (RC_RUNLEVELDIR, runlevel, basename (svc),
+	file = rc_strcatpaths (RC_RUNLEVELDIR, runlevel, cbasename (service),
 						   (char *) NULL);
-	free (svc);
 	retval = exists (file);
 	free (file);
 
@@ -399,21 +396,18 @@ bool rc_service_mark (const char *service, const rc_service_state_t state)
 	char *file;
 	int i = 0;
 	int skip_state = -1;
-	char *base;
-	char *svc;
+	const char *base;
 	char *init = rc_service_resolve (service);
 	bool skip_wasinactive = false;
 
-	if (! service)
+	if (! init)
 		return (false);
 
-	svc = xstrdup (service);
-	base = basename (svc);
+	base = cbasename (service);
 
 	if (state != RC_SERVICE_STOPPED) {
 		if (! exists (init)) {
 			free (init);
-			free (svc);
 			return (false);
 		}
 
@@ -425,7 +419,6 @@ bool rc_service_mark (const char *service, const rc_service_state_t state)
 		if (i != 0)	{
 			free (file);
 			free (init);
-			free (svc);
 			return (false);
 		}
 
@@ -435,7 +428,6 @@ bool rc_service_mark (const char *service, const rc_service_state_t state)
 
 	if (state == RC_SERVICE_COLDPLUGGED || state == RC_SERVICE_FAILED) {
 		free (init);
-		free (svc);
 		return (true);
 	}
 
@@ -449,7 +441,7 @@ bool rc_service_mark (const char *service, const rc_service_state_t state)
 			 s != RC_SERVICE_SCHEDULED) &&
 			(! skip_wasinactive || s != RC_SERVICE_WASINACTIVE))
 		{
-			file = rc_strcatpaths (RC_SVCDIR, rc_parse_service_state(s), base,
+			file = rc_strcatpaths (RC_SVCDIR, rc_parse_service_state (s), base,
 								   (char *) NULL);
 			if (exists (file)) {
 				if ((state == RC_SERVICE_STARTING ||
@@ -516,7 +508,6 @@ bool rc_service_mark (const char *service, const rc_service_state_t state)
 		free (sdir);
 	}
 
-	free (svc);
 	free (init);
 	return (true);
 }
@@ -526,11 +517,10 @@ rc_service_state_t rc_service_state (const char *service)
 {
 	int i;
 	int state = RC_SERVICE_STOPPED;
-	char *svc = xstrdup (service);
 
 	for (i = 0; rc_service_state_names[i].name; i++) {
 		char *file = rc_strcatpaths (RC_SVCDIR, rc_service_state_names[i].name,
-									 basename (svc), (char*) NULL);
+									 cbasename (service), (char*) NULL);
 		if (exists (file)) {
 			if (rc_service_state_names[i].state <= 0x10)
 				state = rc_service_state_names[i].state;
@@ -539,7 +529,6 @@ rc_service_state_t rc_service_state (const char *service)
 		}
 		free (file);
 	}
-	free (svc);
 
 	if (state & RC_SERVICE_STOPPED) {
 		char **services = rc_services_scheduled_by (service);
@@ -603,7 +592,6 @@ static pid_t _exec_service (const char *service, const char *arg)
 	char *file;
 	char *fifo;
 	pid_t pid = -1;
-	char *svc;
 
 	file = rc_service_resolve (service);
 	if (! exists (file)) {
@@ -613,10 +601,8 @@ static pid_t _exec_service (const char *service, const char *arg)
 	}
 
 	/* We create a fifo so that other services can wait until we complete */
-	svc = xstrdup (service);
-	fifo = rc_strcatpaths (RC_SVCDIR, "exclusive", basename (svc),
+	fifo = rc_strcatpaths (RC_SVCDIR, "exclusive", cbasename (service),
 						   (char *) NULL);
-	free (svc);
 
 	if (mkfifo (fifo, 0600) != 0 && errno != EEXIST) {
 		free (fifo);
@@ -674,26 +660,21 @@ bool rc_service_schedule_start (const char *service,
 	char *dir;
 	char *init;
 	char *file;
-	char *svc;
 	bool retval;
 
 	/* service may be a provided service, like net */
 	if (! service || ! rc_service_exists (service_to_start))
 		return (false);
 
-	svc = xstrdup (service);
-	dir = rc_strcatpaths (RC_SVCDIR, "scheduled", basename (svc),
+	dir = rc_strcatpaths (RC_SVCDIR, "scheduled", cbasename (service),
 						  (char *) NULL);
-	free (svc);
 	if (mkdir (dir, 0755) != 0 && errno != EEXIST) {
 		free (dir);
 		return (false);
 	}
 
 	init = rc_service_resolve (service_to_start);
-	svc = xstrdup (service_to_start);
-	file = rc_strcatpaths (dir, basename (svc), (char *) NULL);
-	free (svc);
+	file = rc_strcatpaths (dir, cbasename (service_to_start), (char *) NULL);
 	retval = (exists (file) || symlink (init, file) == 0);
 	free (init);
 	free (file);
@@ -705,12 +686,10 @@ librc_hidden_def(rc_service_schedule_start)
 
 bool rc_service_schedule_clear (const char *service)
 {
-	char *svc  = xstrdup (service);
-	char *dir = rc_strcatpaths (RC_SVCDIR, "scheduled", basename (svc),
+	char *dir = rc_strcatpaths (RC_SVCDIR, "scheduled", cbasename (service),
 								(char *) NULL);
 	bool retval;
 
-	free (svc);
 	if (! (retval = rm_dir (dir, true)) && errno == ENOENT)
 		retval = true;
 	free (dir);
@@ -787,7 +766,6 @@ bool rc_service_add (const char *runlevel, const char *service)
 	bool retval;
 	char *init;
 	char *file;
-	char *svc;
 
 	if (! rc_runlevel_exists (runlevel)) {
 		errno = ENOENT;
@@ -814,10 +792,8 @@ bool rc_service_add (const char *runlevel, const char *service)
 		}
 	}
 
-	svc = xstrdup (service);
-	file = rc_strcatpaths (RC_RUNLEVELDIR, runlevel, basename (svc),
+	file = rc_strcatpaths (RC_RUNLEVELDIR, runlevel, cbasename (service),
 						   (char *) NULL);
-	free (svc);
 	retval = (symlink (init, file) == 0);
 	free (init);
 	free (file);
@@ -828,16 +804,13 @@ librc_hidden_def(rc_service_add)
 bool rc_service_delete (const char *runlevel, const char *service)
 {
 	char *file;
-	char *svc;
 	bool retval = false;
 
 	if (! runlevel || ! service)
 		return (false);
 
-	svc = xstrdup (service);
-	file = rc_strcatpaths (RC_RUNLEVELDIR, runlevel, basename (svc),
+	file = rc_strcatpaths (RC_RUNLEVELDIR, runlevel, cbasename (service),
 						   (char *) NULL);
-	free (svc);
 	if (unlink (file) == 0)
 		retval = true;
 
@@ -868,19 +841,17 @@ librc_hidden_def(rc_services_scheduled_by)
 
 char **rc_services_scheduled (const char *service)
 {
-	char *svc = xstrdup (service);
-	char *dir = rc_strcatpaths (RC_SVCDIR, "scheduled", basename (svc),
+	char *dir = rc_strcatpaths (RC_SVCDIR, "scheduled", cbasename (service),
 								(char *) NULL);
 	char **list = NULL;
 
-	free (svc);
 	list = ls_dir (dir, LS_INITD);
 	free (dir);
 	return (list);
 }
 librc_hidden_def(rc_services_scheduled)
 
-bool rc_service_plugable (char *service)
+bool rc_service_plugable (const char *service)
 {
 	char *list;
 	char *p;
diff --git a/src/mountinfo.c b/src/mountinfo.c
index ad76d32..05ce8dd 100644
--- a/src/mountinfo.c
+++ b/src/mountinfo.c
@@ -43,7 +43,6 @@
 
 #include <errno.h>
 #include <getopt.h>
-#include <libgen.h>
 #include <limits.h>
 #include <stdio.h>
 #include <stdlib.h>
@@ -367,8 +366,6 @@ int mountinfo (int argc, char **argv)
 	int result;
 	bool quiet;
 
-	applet = basename (argv[0]);
-
 	/* Ensure that we are only quiet when explicitly told to be */
 	unsetenv ("EINFO_QUIET");
 
diff --git a/src/rc-depend.c b/src/rc-depend.c
index 8c61d88..9c87044 100644
--- a/src/rc-depend.c
+++ b/src/rc-depend.c
@@ -29,8 +29,6 @@
  * SUCH DAMAGE.
  */
 
-#define APPLET "rc-depend"
-
 #include <sys/types.h>
 #include <sys/stat.h>
 
@@ -47,6 +45,8 @@
 #include "rc-misc.h"
 #include "strlist.h"
 
+static const char *applet;
+
 rc_depinfo_t *_rc_deptree_load (int *regen) {
 	if (rc_deptree_update_needed ()) {
 		int retval;
@@ -62,8 +62,6 @@ rc_depinfo_t *_rc_deptree_load (int *regen) {
 	return (rc_deptree_load ());
 }
 
-static char *applet = NULL;
-
 #include "_usage.h"
 #define getoptstring "t:suT" getoptstring_COMMON
 static struct option longopts[] = {
@@ -98,7 +96,7 @@ int rc_depend (int argc, char **argv)
 	int opt;
 	char *token;
 
-	applet = argv[0];
+	applet = cbasename (argv[0]); 
 
 	while ((opt = getopt_long (argc, argv, getoptstring,
 							   longopts, (int *) 0)) != -1)
diff --git a/src/rc-misc.h b/src/rc-misc.h
index 570d7e7..bcc6b54 100644
--- a/src/rc-misc.h
+++ b/src/rc-misc.h
@@ -35,6 +35,7 @@
 #include <sys/stat.h>
 #include <errno.h>
 #include <stdbool.h>
+#include <string.h>
 
 #ifndef LIB
 #  define LIB "lib"
@@ -118,4 +119,14 @@ bool rc_conf_yesno (const char *var);
 char **env_filter (void);
 char **env_config (void);
 
+/* cbasename never modifies the argument. As such, if there is a trailing
+ * slash then an empty string is returned. */
+static inline const char *cbasename (const char *argv0) {
+	char *l = strrchr (argv0, '/');
+
+	if (l)
+		return (++l);
+	return (argv0);
+}
+
 #endif
diff --git a/src/rc-update.c b/src/rc-update.c
index 3ab52fd..3c366be 100644
--- a/src/rc-update.c
+++ b/src/rc-update.c
@@ -29,8 +29,6 @@
  * SUCH DAMAGE.
  */
 
-#define APPLET "rc-update"
-
 #include <errno.h>
 #include <getopt.h>
 #include <limits.h>
@@ -46,7 +44,7 @@
 #include "rc-misc.h"
 #include "strlist.h"
 
-static char *applet = NULL;
+static const char *applet = NULL;
 
 /* Return the number of changes made:
  *  -1 = no changes (error)
@@ -161,7 +159,7 @@ int rc_update (int argc, char **argv)
 	int opt;
 	int retval = EXIT_FAILURE;
 
-	applet = argv[0];
+	applet = cbasename (argv[0]); 
 
 	while ((opt = getopt_long (argc, argv, getoptstring,
 							   longopts, (int *) 0)) != -1)
diff --git a/src/rc.c b/src/rc.c
index 507a165..7a33e64 100644
--- a/src/rc.c
+++ b/src/rc.c
@@ -36,8 +36,6 @@
 
 const char copyright[] = "Copyright (c) 2007 Roy Marples";
 
-#define APPLET "rc"
-
 #define SYSLOG_NAMES
 
 #include <sys/types.h>
@@ -49,7 +47,6 @@ const char copyright[] = "Copyright (c) 2007 Roy Marples";
 #include <dirent.h>
 #include <ctype.h>
 #include <getopt.h>
-#include <libgen.h>
 #include <limits.h>
 #include <stdbool.h>
 #include <stdio.h>
@@ -93,7 +90,7 @@ extern char **environ;
 static char *RUNLEVEL = NULL;
 static char *PREVLEVEL = NULL;
 
-static char *applet = NULL;
+static const char *applet = NULL;
 static char *runlevel = NULL;
 static char **env = NULL;
 static char **newenv = NULL;
@@ -150,9 +147,6 @@ static void cleanup (void)
 
 		free (runlevel);
 	}
-
-	free (applet);
-	applet = NULL;
 }
 
 static int syslog_decode (char *name, CODE *codetab)
@@ -815,10 +809,8 @@ int main (int argc, char **argv)
 	bool parallel;
 	int regen = 0;
 
+	applet = cbasename (argv[0]);
 	atexit (cleanup);
-	if (argv[0])
-		applet = xstrdup (basename (argv[0]));
-
 	if (! applet)
 		eerrorx ("arguments required");
 
diff --git a/src/rc.h b/src/rc.h
index 776c167..b95c9c5 100644
--- a/src/rc.h
+++ b/src/rc.h
@@ -150,7 +150,7 @@ char **rc_service_extra_commands (const char *service);
 /*! Check if the service is allowed to be hot/cold plugged
  * @param service to check
  * @return true if allowed, otherwise false */
-bool rc_service_plugable (char *service);
+bool rc_service_plugable (const char *service);
 
 /*! Resolves a service name to its full path.
  * @param service to check
diff --git a/src/runscript.c b/src/runscript.c
index c52b33e..6839497 100644
--- a/src/runscript.c
+++ b/src/runscript.c
@@ -29,8 +29,6 @@
  * SUCH DAMAGE.
  */
 
-#define APPLET "runscript"
-
 #include <sys/select.h>
 #include <sys/types.h>
 #include <sys/ioctl.h>
@@ -40,7 +38,6 @@
 #include <errno.h>
 #include <fcntl.h>
 #include <getopt.h>
-#include <libgen.h>
 #include <limits.h>
 #include <signal.h>
 #include <stdio.h>
@@ -76,7 +73,7 @@
 
 #define ONE_SECOND      1000000000
 
-static char *applet = NULL;
+static const char *applet = NULL;
 static char *service = NULL;
 static char *exclusive = NULL;
 static char *mtime_test = NULL;
@@ -353,7 +350,6 @@ static void cleanup (void)
 	}
 	free (exclusive);
 	free (service);
-	free (applet);
 	free (prefix);
 	free (softlevel);
 }
@@ -502,7 +498,6 @@ static bool svc_exec (const char *arg1, const char *arg2)
 static bool svc_wait (rc_depinfo_t *depinfo, const char *svc)
 {
 	char *s;
-	char *base;
 	char *fifo;
 	struct timespec ts;
 	int nloops = WAIT_MAX * (ONE_SECOND / WAIT_INTERVAL);
@@ -524,11 +519,7 @@ static bool svc_wait (rc_depinfo_t *depinfo, const char *svc)
 	}
 	rc_strlist_free (keywords);
 
-	s = xstrdup (svc);
-	base = basename (s);
-	fifo = rc_strcatpaths (RC_SVCDIR, "exclusive", base, (char *) NULL);
-	free (s);
-
+	fifo = rc_strcatpaths (RC_SVCDIR, "exclusive", cbasename (svc), (char *) NULL);
 	ts.tv_sec = 0;
 	ts.tv_nsec = WAIT_INTERVAL;
 
@@ -1055,7 +1046,7 @@ int runscript (int argc, char **argv)
 		exit (EXIT_FAILURE);
 	}
 
-	applet = xstrdup (basename (argv[1]));
+	applet = cbasename (argv[1]);
 	if (argc < 3)
 		usage (EXIT_FAILURE);
 
diff --git a/src/start-stop-daemon.c b/src/start-stop-daemon.c
index 82fa99a..ba93a29 100644
--- a/src/start-stop-daemon.c
+++ b/src/start-stop-daemon.c
@@ -33,8 +33,6 @@
  * SUCH DAMAGE.
  */
 
-#define APPLET "start-stop-daemon"
-
 /* nano seconds */
 #define POLL_INTERVAL   20000000
 #define WAIT_PIDFILE   500000000
@@ -90,7 +88,7 @@ typedef struct schedulelist
 } schedulelist_t;
 static schedulelist_t *schedule;
 
-static char *applet;
+static const char *applet;
 static char *changeuser;
 static char **newenv;
 
@@ -574,7 +572,7 @@ int start_stop_daemon (int argc, char **argv)
 	char *svcname = getenv ("SVCNAME");
 	char *env;
 
-	applet = argv[0];
+	applet = cbasename (argv[0]);
 	atexit (cleanup);
 
 	signal (SIGINT, handle_signal);