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authorRoy Marples <roy@marples.name>2008-01-05 19:25:55 +0000
committerRoy Marples <roy@marples.name>2008-01-05 19:25:55 +0000
commitac21d75300dabe83578e4373fcfd09d67c3a083b (patch)
treed5f8e2a16920add2277c79ff8a1b7e99ec2976df /src/rc/rc-depend.c
parent112fbde453d55c49b7999d2e35496a8758aaa7b5 (diff)
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Add some .mk stubs to impersonate bsk .mk files to make writing our Makefiles easier. libeinfo, librc and rc now have their own seperate directories. More work is needed to tidy this up though.
Diffstat (limited to 'src/rc/rc-depend.c')
-rw-r--r--src/rc/rc-depend.c192
1 files changed, 192 insertions, 0 deletions
diff --git a/src/rc/rc-depend.c b/src/rc/rc-depend.c
new file mode 100644
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+++ b/src/rc/rc-depend.c
@@ -0,0 +1,192 @@
+/*
+ rc-depend
+ rc service dependency and ordering
+ */
+
+/*
+ * Copyright 2007 Roy Marples
+ * All rights reserved
+
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <sys/types.h>
+#include <sys/stat.h>
+
+#include <getopt.h>
+#include <errno.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"
+
+static const char *applet;
+
+rc_depinfo_t *_rc_deptree_load (int *regen) {
+ if (rc_deptree_update_needed ()) {
+ int retval;
+
+ if (regen)
+ *regen = 1;
+
+ ebegin ("Caching service dependencies");
+ retval = rc_deptree_update ();
+ eend (retval ? 0 : -1, "Failed to update the dependency tree");
+ }
+
+ return (rc_deptree_load ());
+}
+
+#include "_usage.h"
+#define getoptstring "t:suT" getoptstring_COMMON
+static struct option longopts[] = {
+ { "type", 1, NULL, 't'},
+ { "notrace", 0, NULL, 'T'},
+ { "strict", 0, NULL, 's'},
+ { "update", 0, NULL, 'u'},
+ longopts_COMMON
+};
+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;
+ char *service;
+ int options = RC_DEP_TRACE;
+ bool first = true;
+ int i;
+ bool update = false;
+ char *runlevel = xstrdup( getenv ("RC_SOFTLEVEL"));
+ int opt;
+ char *token;
+
+ applet = basename_c (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_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 (! (deptree = _rc_deptree_load (NULL)))
+ eerrorx ("failed to load deptree");
+
+ if (! runlevel)
+ runlevel = rc_runlevel_get ();
+
+ while (optind < argc) {
+ list = NULL;
+ rc_strlist_add (&list, argv[optind]);
+ errno = 0;
+ depends = rc_deptree_depends (deptree, NULL, (const char **) list,
+ runlevel, 0);
+ if (! depends && errno == ENOENT)
+ eerror ("no dependency info for service `%s'", argv[optind]);
+ else
+ rc_strlist_add (&services, argv[optind]);
+
+ rc_strlist_free (depends);
+ rc_strlist_free (list);
+ optind++;
+ }
+
+ if (! services) {
+ rc_strlist_free (types);
+ rc_deptree_free (deptree);
+ free (runlevel);
+ 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, (const char **) types,
+ (const char **) 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);
+ free (runlevel);
+ return (EXIT_SUCCESS);
+}