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/*
rc-depend
rc service dependency and ordering
Copyright 2006-2007 Gentoo Foundation
Released under the GPLv2
*/
#include <sys/types.h>
#include <sys/stat.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "builtins.h"
#include "einfo.h"
#include "rc.h"
#include "rc-misc.h"
#include "strlist.h"
rc_depinfo_t *_rc_deptree_load (void) {
if (rc_deptree_update_needed ()) {
int retval;
ebegin ("Caching service dependencies");
retval = rc_deptree_update ();
eend (retval, "Failed to update the dependency tree");
}
return (rc_deptree_load ());
}
int rc_depend (int argc, char **argv)
{
char **types = NULL;
char **services = NULL;
char **depends = NULL;
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");
if (! runlevel)
runlevel = rc_runlevel_get ();
for (i = 1; i < argc; i++) {
if (strcmp (argv[i], "--update") == 0) {
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) {
options |= RC_DEP_STRICT;
continue;
}
if (strcmp (argv[i], "--notrace") == 0) {
options &= RC_DEP_TRACE;
continue;
}
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) {
rc_strlist_free (types);
rc_deptree_free (deptree);
if (update)
return (EXIT_SUCCESS);
eerrorx ("no services specified");
}
/* If we don't have any types, then supply some defaults */
if (! types) {
rc_strlist_add (&types, "ineed");
rc_strlist_add (&types, "iuse");
}
depends = rc_deptree_depends (deptree, types, services, runlevel, options);
if (depends) {
STRLIST_FOREACH (depends, service, i) {
if (first)
first = false;
else
printf (" ");
if (service)
printf ("%s", service);
}
printf ("\n");
}
rc_strlist_free (types);
rc_strlist_free (services);
rc_strlist_free (depends);
rc_deptree_free (deptree);
return (EXIT_SUCCESS);
}
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