trunk/src/rc-depend.c

/*
   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"

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_get_runlevel ();

        for (i = 1; i < argc; i++) {
                if (strcmp (argv[i], "--update") == 0) {
                        if (! update) {
                                rc_update_deptree (true);
                                update = true;
                        }
                        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_load_deptree ()) == NULL)
                                eerrorx ("failed to load deptree");

                        di = rc_get_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_free_deptree (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_get_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_free_deptree (deptree);

        return (EXIT_SUCCESS);
}
1	/*
2	rc-depend
3	rc service dependency and ordering
4	Copyright 2006-2007 Gentoo Foundation
5	Released under the GPLv2
6	*/
7
8	#include <sys/types.h>
9	#include <sys/stat.h>
10
11	#include <stdbool.h>
12	#include <stdio.h>
13	#include <stdlib.h>
14	#include <string.h>
15
16	#include "builtins.h"
17	#include "einfo.h"
18	#include "rc.h"
19	#include "rc-misc.h"
20	#include "strlist.h"
21
22	int rc_depend (int argc, char **argv)
23	{
24	char **types = NULL;
25	char **services = NULL;
26	char **depends = NULL;
27	rc_depinfo_t *deptree = NULL;
28	rc_depinfo_t *di;
29	char *service;
30	int options = RC_DEP_TRACE;
31	bool first = true;
32	int i;
33	bool update = false;
34	char *runlevel = getenv ("RC_SOFTLEVEL");
35
36	if (! runlevel)
37	runlevel = rc_get_runlevel ();
38
39	for (i = 1; i < argc; i++) {
40	if (strcmp (argv[i], "--update") == 0) {
41	if (! update) {
42	rc_update_deptree (true);
43	update = true;
44	}
45	continue;
46	}
47
48	if (strcmp (argv[i], "--strict") == 0) {
49	options \|= RC_DEP_STRICT;
50	continue;
51	}
52
53	if (strcmp (argv[i], "--notrace") == 0) {
54	options &= RC_DEP_TRACE;
55	continue;
56	}
57
58	if (argv[i][0] == '-') {
59	argv[i]++;
60	rc_strlist_add (&types, argv[i]);
61	} else {
62	if ((deptree = rc_load_deptree ()) == NULL)
63	eerrorx ("failed to load deptree");
64
65	di = rc_get_depinfo (deptree, argv[i]);
66	if (! di)
67	eerror ("no dependency info for service `%s'", argv[i]);
68	else
69	rc_strlist_add (&services, argv[i]);
70	}
71	}
72
73	if (! services) {
74	rc_strlist_free (types);
75	rc_free_deptree (deptree);
76	if (update)
77	return (EXIT_SUCCESS);
78	eerrorx ("no services specified");
79	}
80
81	/* If we don't have any types, then supply some defaults */
82	if (! types) {
83	rc_strlist_add (&types, "ineed");
84	rc_strlist_add (&types, "iuse");
85	}
86
87	depends = rc_get_depends (deptree, types, services, runlevel, options);
88
89	if (depends) {
90	STRLIST_FOREACH (depends, service, i) {
91	if (first)
92	first = false;
93	else
94	printf (" ");
95
96	if (service)
97	printf ("%s", service);
98
99	}
100	printf ("\n");
101	}
102
103	rc_strlist_free (types);
104	rc_strlist_free (services);
105	rc_strlist_free (depends);
106	rc_free_deptree (deptree);
107
108	return (EXIT_SUCCESS);
109	}