166 lines
3.4 KiB
C
166 lines
3.4 KiB
C
/*
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rc-depend
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rc service dependency and ordering
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Copyright 2006-2007 Gentoo Foundation
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Released under the GPLv2
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*/
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#define APPLET "rc-depend"
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <getopt.h>
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#include <errno.h>
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#include <stdbool.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "builtins.h"
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#include "einfo.h"
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#include "rc.h"
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#include "rc-misc.h"
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#include "strlist.h"
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rc_depinfo_t *_rc_deptree_load (void) {
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if (rc_deptree_update_needed ()) {
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int retval;
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ebegin ("Caching service dependencies");
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retval = rc_deptree_update ();
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eend (retval ? 0 : -1, "Failed to update the dependency tree");
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}
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return (rc_deptree_load ());
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}
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static char *applet = NULL;
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#include "_usage.h"
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#define getoptstring "t:suT" getoptstring_COMMON
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static struct option longopts[] = {
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{ "type", 1, NULL, 't'},
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{ "notrace", 0, NULL, 'T'},
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{ "strict", 0, NULL, 's'},
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{ "update", 0, NULL, 'u'},
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longopts_COMMON
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};
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static const char * const longopts_help[] = {
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"Type(s) of dependency to list",
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"Don't trace service dependencies",
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"Only use what is in the runlevels",
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"Force an update of the dependency tree",
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longopts_help_COMMON
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};
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#include "_usage.c"
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int rc_depend (int argc, char **argv)
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{
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char **types = NULL;
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char **services = NULL;
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char **depends = NULL;
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char **list;
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rc_depinfo_t *deptree = NULL;
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char *service;
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int options = RC_DEP_TRACE;
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bool first = true;
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int i;
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bool update = false;
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char *runlevel = xstrdup( getenv ("RC_SOFTLEVEL"));
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int opt;
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char *token;
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applet = argv[0];
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while ((opt = getopt_long (argc, argv, getoptstring,
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longopts, (int *) 0)) != -1)
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{
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switch (opt) {
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case 's':
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options |= RC_DEP_STRICT;
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break;
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case 't':
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while ((token = strsep (&optarg, ",")))
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rc_strlist_addu (&types, token);
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break;
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case 'u':
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update = true;
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break;
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case 'T':
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options &= RC_DEP_TRACE;
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break;
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case_RC_COMMON_GETOPT
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}
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}
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if (update) {
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bool u = false;
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ebegin ("Caching service dependencies");
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u = rc_deptree_update ();
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eend (u ? 0 : -1, "%s: %s", applet, strerror (errno));
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if (! u)
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eerrorx ("Failed to update the dependency tree");
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}
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if (! (deptree = _rc_deptree_load ()))
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eerrorx ("failed to load deptree");
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if (! runlevel)
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runlevel = rc_runlevel_get ();
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while (optind < argc) {
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list = NULL;
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rc_strlist_add (&list, argv[optind]);
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errno = 0;
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depends = rc_deptree_depends (deptree, NULL, list, runlevel, 0);
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if (! depends && errno == ENOENT)
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eerror ("no dependency info for service `%s'", argv[optind]);
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else
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rc_strlist_add (&services, argv[optind]);
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rc_strlist_free (depends);
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rc_strlist_free (list);
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optind++;
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}
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if (! services) {
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rc_strlist_free (types);
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rc_deptree_free (deptree);
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free (runlevel);
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if (update)
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return (EXIT_SUCCESS);
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eerrorx ("no services specified");
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}
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/* If we don't have any types, then supply some defaults */
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if (! types) {
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rc_strlist_add (&types, "ineed");
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rc_strlist_add (&types, "iuse");
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}
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depends = rc_deptree_depends (deptree, types, services, runlevel, options);
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if (depends) {
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STRLIST_FOREACH (depends, service, i) {
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if (first)
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first = false;
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else
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printf (" ");
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if (service)
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printf ("%s", service);
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}
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printf ("\n");
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}
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rc_strlist_free (types);
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rc_strlist_free (services);
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rc_strlist_free (depends);
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rc_deptree_free (deptree);
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free (runlevel);
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return (EXIT_SUCCESS);
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}
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