depinfo and deptype are now internal use only. rc-depend cuddles up to getopt.

src/librc-depend.c

@@ -149,7 +149,7 @@ rc_depinfo_t *rc_deptree_load (void)
 }
 librc_hidden_def(rc_deptree_load)
 
-rc_depinfo_t *rc_deptree_depinfo (rc_depinfo_t *deptree, const char *service)
+static rc_depinfo_t *get_depinfo (rc_depinfo_t *deptree, const char *service)
 {
 	rc_depinfo_t *di;
 
@@ -162,9 +162,8 @@ rc_depinfo_t *rc_deptree_depinfo (rc_depinfo_t *deptree, const char *service)
 
 	return (NULL);
 }
-librc_hidden_def(rc_deptree_depinfo)
 
-rc_deptype_t *rc_deptree_deptype (rc_depinfo_t *depinfo, const char *type)
+static rc_deptype_t *get_deptype (rc_depinfo_t *depinfo, const char *type)
 {
 	rc_deptype_t *dt;
 
@@ -177,7 +176,6 @@ rc_deptype_t *rc_deptree_deptype (rc_depinfo_t *depinfo, const char *type)
 
 	return (NULL);
 }
-librc_hidden_def(rc_deptree_deptype)
 
 static bool valid_service (const char *runlevel, const char *service)
 {
@@ -260,7 +258,7 @@ static char **get_provided (rc_depinfo_t *deptree, rc_depinfo_t *depinfo,
 	if (rc_service_exists (depinfo->service))
 		return (NULL);
 
-	dt = rc_deptree_deptype (depinfo, "providedby");
+	dt = get_deptype (depinfo, "providedby");
 	if (! dt)
 		return (NULL);
 
@@ -379,7 +377,7 @@ static void visit_service (rc_depinfo_t *deptree, char **types,
 
 	STRLIST_FOREACH (types, item, i)
 	{
-		if ((dt = rc_deptree_deptype (depinfo, item)))
+		if ((dt = get_deptype (depinfo, item)))
 		{
 			STRLIST_FOREACH (dt->services, service, j)
 			{
@@ -389,12 +387,12 @@ static void visit_service (rc_depinfo_t *deptree, char **types,
 					continue;
 				}
 
-				di = rc_deptree_depinfo (deptree, service);
+				di = get_depinfo (deptree, service);
 				if ((provides = get_provided (deptree, di, runlevel, options)))
 				{
 					STRLIST_FOREACH (provides, lp, k) 
 					{
-						di = rc_deptree_depinfo (deptree, lp);
+						di = get_depinfo (deptree, lp);
 						if (di && (strcmp (item, "ineed") == 0 ||
 								   strcmp (item, "needsme") == 0 ||
 								   valid_service (runlevel, di->service)))
@@ -415,11 +413,11 @@ static void visit_service (rc_depinfo_t *deptree, char **types,
 
 	/* Now visit the stuff we provide for */
 	if (options & RC_DEP_TRACE &&
-		(dt = rc_deptree_deptype (depinfo, "iprovide")))
+		(dt = get_deptype (depinfo, "iprovide")))
 	{
 		STRLIST_FOREACH (dt->services, service, i)
 		{
-			if ((di = rc_deptree_depinfo (deptree, service)))
+			if ((di = get_depinfo (deptree, service)))
 				if ((provides = get_provided (deptree, di, runlevel, options)))
 				{
 					STRLIST_FOREACH (provides, lp, j)
@@ -438,7 +436,7 @@ static void visit_service (rc_depinfo_t *deptree, char **types,
 	   are also the service calling us or we are provided by something */
 	svcname = getenv("SVCNAME");
 	if (! svcname || strcmp (svcname, depinfo->service) != 0)
-		if (! rc_deptree_deptype (depinfo, "providedby"))
+		if (! get_deptype (depinfo, "providedby"))
 			rc_strlist_add (&sorted->list, depinfo->service);
 }
 
@@ -452,7 +450,7 @@ char **rc_deptree_depends (rc_depinfo_t *deptree,
 	char *service;
 	int i;
 
-	if (! deptree || ! types || ! services)
+	if (! deptree || ! services)
 		return (NULL);
 
 	memset (&sorted, 0, sizeof (struct lhead));
@@ -464,8 +462,13 @@ char **rc_deptree_depends (rc_depinfo_t *deptree,
 
 	STRLIST_FOREACH (services, service, i)
 	{
-		di = rc_deptree_depinfo (deptree, service);
+		if (! (di = get_depinfo (deptree, service))) {
-		visit_service (deptree, types, &sorted, &visited, di, runlevel, options);
+			errno = ENOENT;
+			continue;
+		}
+		if (types)
+			visit_service (deptree, types, &sorted, &visited,
+						   di, runlevel, options);
 	}
 
 	rc_strlist_free (visited.list);
@@ -650,14 +653,14 @@ librc_hidden_def(rc_deptree_update_needed)
    Phase 4 scans that depinfo object and puts in backlinks
    Phase 5 saves the depinfo object to disk
    */
-int rc_deptree_update (void)
+bool rc_deptree_update (void)
 {
 	char *depends;
 	char *service;
 	char *type;
 	char *depend;
 	char **config = NULL;
-	int retval = 0;
+	int retval = true;
 	FILE *fp;
 	rc_depinfo_t *deptree;
 	rc_depinfo_t *depinfo;
@@ -680,7 +683,7 @@ int rc_deptree_update (void)
 
 	/* Phase 1 */
 	if (! (fp = popen (GENDEP, "r")))
-		return (-1);
+		return (false);
 
 	deptree = rc_xmalloc (sizeof (rc_depinfo_t));
 	memset (deptree, 0, sizeof (rc_depinfo_t));
@@ -779,7 +782,7 @@ int rc_deptree_update (void)
 	/* Phase 3 - add our providors to the tree */
 	for (depinfo = deptree; depinfo; depinfo = depinfo->next)
 	{
-		if ((deptype = rc_deptree_deptype (depinfo, "iprovide")))
+		if ((deptype = get_deptype (depinfo, "iprovide")))
 			STRLIST_FOREACH (deptype->services, service, i)
 			{
 				for (di = deptree; di; di = di->next)
@@ -803,13 +806,13 @@ int rc_deptree_update (void)
 	{
 		for (i = 0; deppairs[i].depend; i++)
 		{
-			deptype = rc_deptree_deptype (depinfo, deppairs[i].depend);
+			deptype = get_deptype (depinfo, deppairs[i].depend);
 			if (! deptype)
 				continue;
 
 			STRLIST_FOREACH (deptype->services, service, j)
 			{
-				di = rc_deptree_depinfo (deptree, service);
+				di = get_depinfo (deptree, service);
 				if (! di)
 				{
 					if (strcmp (deptype->type, "ineed") == 0)
@@ -817,7 +820,7 @@ int rc_deptree_update (void)
 						fprintf (stderr,
 								 "Service `%s' needs non existant service `%s'",
 								 depinfo->service, service);
-						retval = -1;
+						retval = false;
 					} 
 					continue;
 				}
@@ -884,8 +887,10 @@ int rc_deptree_update (void)
 			i++;
 		}
 		fclose (fp);
-	} else
+	} else {
-		fprintf (stderr, "fopen `%s': %s", RC_DEPTREE, strerror (errno));
+		fprintf (stderr, "fopen `%s': %s\n", RC_DEPTREE, strerror (errno));
+		retval = false;
+	}
 
 	/* Save our external config files to disk */
 	if (config) {
@@ -893,8 +898,10 @@ int rc_deptree_update (void)
 			STRLIST_FOREACH (config, service, i)
 				fprintf (fp, "%s\n", service);
 			fclose (fp);
-		} else
+		} else {
 			fprintf (stderr, "fopen `%s': %s\n", RC_DEPCONFIG, strerror (errno));
+			retval = false;
+		}
 		rc_strlist_free (config);
 	}
 

src/librc.h

@@ -55,8 +55,6 @@ librc_hidden_proto(rc_config_list)
 librc_hidden_proto(rc_config_load)
 librc_hidden_proto(rc_config_value)
 librc_hidden_proto(rc_deptree_depends)
-librc_hidden_proto(rc_deptree_depinfo)
-librc_hidden_proto(rc_deptree_deptype)
 librc_hidden_proto(rc_deptree_free)
 librc_hidden_proto(rc_deptree_load)
 librc_hidden_proto(rc_deptree_order_services)

src/rc-depend.c

@@ -5,9 +5,13 @@
    Released under the GPLv2
    */
 
+#define APPLET "rc-depend"
+
 #include <sys/types.h>
 #include <sys/stat.h>
 
+#include <getopt.h>
+#include <errno.h>
 #include <stdbool.h>
 #include <stdio.h>
 #include <stdlib.h>
@@ -31,56 +35,97 @@ rc_depinfo_t *_rc_deptree_load (void) {
 	return (rc_deptree_load ());
 }
 
+static char *applet = NULL;
+
+#include "_usage.h"
+#define getoptstring "t:suT" getoptstring_COMMON
+static struct option longopts[] = {
+	{ "type",     0, NULL, 't'},
+	{ "notrace",  0, NULL, 'T'},
+	{ "strict",   0, NULL, 's'},
+	{ "update",   0, NULL, 'u'},
+	longopts_COMMON
+	{ NULL,       0, NULL, 0}
+};
+static const char * const longopts_help[] = {
+	"Type(s) of dependency to list",
+	"Don't trace service dependencies",
+	"Only use what is in the runlevels",
+	"Force an update of the dependency tree",
+	longopts_help_COMMON
+};
+#include "_usage.c"
+
 int rc_depend (int argc, char **argv)
 {
 	char **types = NULL;
 	char **services = NULL;
 	char **depends = NULL;
+	char **list;
 	rc_depinfo_t *deptree = NULL;
-	rc_depinfo_t *di;
 	char *service;
 	int options = RC_DEP_TRACE;
 	bool first = true;
 	int i;
 	bool update = false;
 	char *runlevel = getenv ("RC_SOFTLEVEL");
+	int opt;
+	char *token;
+
+	applet = argv[0];
+
+	while ((opt = getopt_long (argc, argv, getoptstring,
+							   longopts, (int *) 0)) != -1)
+	{
+		switch (opt) {
+			case 's':
+				options |= RC_DEP_STRICT;
+				break;
+			case 't':
+				while ((token = strsep (&optarg, ",")))
+					rc_strlist_addu (&types, token);
+				break;
+			case 'u':
+				update = true;
+				break;
+			case 'T':
+				options &= RC_DEP_TRACE;
+				break;
+			case '?':
+				einfo ("hello");
+
+			case_RC_COMMON_GETOPT
+		}
+	}
+
+	if (update) {
+		bool u = false;
+		ebegin ("Caching service dependencies");
+		u = rc_deptree_update ();
+		eend (u ? 0 : -1, "%s: %s", applet, strerror (errno));
+		if (! u)
+			eerrorx ("Failed to update the dependency tree");
+	}
 
 	if (! runlevel)
 		runlevel = rc_runlevel_get ();
 
-	for (i = 1; i < argc; i++) {
+	if (! (deptree = _rc_deptree_load ()))
-		if (strcmp (argv[i], "--update") == 0) {
+		eerrorx ("failed to load deptree");
-			if (! update) {
-				ebegin ("Caching service dependencies");
-				update = (rc_deptree_update () == 0);
-				eend (update ? 0 : -1, "Failed to update the dependency tree");
-			}
-			continue;
-		}
 
-		if (strcmp (argv[i], "--strict") == 0) {
+	while (optind < argc) {
-			options |= RC_DEP_STRICT;
+		list = NULL;
-			continue;
+		rc_strlist_add (&list, argv[optind]);
-		}
+		errno = 0;
+		depends = rc_deptree_depends (deptree, NULL, list, runlevel, 0);
+		if (! depends && errno == ENOENT)
+			eerror ("no dependency info for service `%s'", argv[optind]);
+		else
+			rc_strlist_add (&services, argv[optind]);
 
-		if (strcmp (argv[i], "--notrace") == 0) {
+		rc_strlist_free (depends);
-			options &= RC_DEP_TRACE;
+		rc_strlist_free (list);
-			continue;
+		optind++;
-		}
-
-		if (argv[i][0] == '-') {
-			argv[i]++;
-			rc_strlist_add (&types, argv[i]);
-		} else {
-			if ((deptree = _rc_deptree_load ()) == NULL)
-				eerrorx ("failed to load deptree");
-
-			di = rc_deptree_depinfo (deptree, argv[i]);
-			if (! di)
-				eerror ("no dependency info for service `%s'", argv[i]);
-			else
-				rc_strlist_add (&services, argv[i]);
-		}
 	}
 
 	if (! services) {
@@ -117,6 +162,5 @@ int rc_depend (int argc, char **argv)
 	rc_strlist_free (services);
 	rc_strlist_free (depends);
 	rc_deptree_free (deptree);
-
 	return (EXIT_SUCCESS);
 }

src/rc.h

@@ -254,15 +254,14 @@ pid_t *rc_find_pids (const char *exec, const char *cmd,
 
 #ifndef _IN_LIBRC
 /* Handles to internal structures */
-typedef void *rc_deptype_t;
 typedef void *rc_depinfo_t;
 #endif
 
 /*! Update the cached dependency tree if it's older than any init script,
  * its configuration file or an external configuration file the init script
  * has specified.
- * @return 0 if successful, otherwise -1 */
+ * @return true if successful, otherwise false */
-int rc_deptree_update (void);
+bool rc_deptree_update (void);
 
 /*! Check if the cached dependency tree is older than any init script,
  * its configuration file or an external configuration file the init script
@@ -275,18 +274,6 @@ bool rc_deptree_update_needed (void);
  * @return pointer to the dependency tree */
 rc_depinfo_t *rc_deptree_load (void);
 
-/*! Get a services depedency information from a loaded tree
- * @param deptree to search
- * @param service to find
- * @return service dependency information */
-rc_depinfo_t *rc_deptree_depinfo (rc_depinfo_t *deptree, const char *service);
-
-/*! Get a depenency type from the service dependency information
- * @param depinfo service dependency to search
- * @param type to find
- * @return service dependency type information */
-rc_deptype_t *rc_deptree_deptype (rc_depinfo_t *depinfo, const char *type);
-
 char **rc_deptree_depends (rc_depinfo_t *deptree, char **types,
 						   char **services, const char *runlevel, int options);
 

src/rc.map

@@ -4,8 +4,6 @@ global:
 	rc_config_load;
 	rc_config_value;
 	rc_deptree_depends;
-	rc_deptree_depinfo;
-	rc_deptree_deptype;
 	rc_deptree_free;
 	rc_deptree_load;
 	rc_deptree_order_services;