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Diffstat (limited to 'src/rc-depend/rc-depend.c')
| -rw-r--r-- | src/rc-depend/rc-depend.c | 177 |
1 files changed, 177 insertions, 0 deletions
diff --git a/src/rc-depend/rc-depend.c b/src/rc-depend/rc-depend.c new file mode 100644 index 00000000..9f833b70 --- /dev/null +++ b/src/rc-depend/rc-depend.c @@ -0,0 +1,177 @@ +/* + * rc-depend + * rc service dependency and ordering + */ + +/* + * Copyright (c) 2007-2015 The OpenRC Authors. + * See the Authors file at the top-level directory of this distribution and + * https://github.com/OpenRC/openrc/blob/HEAD/AUTHORS + * + * This file is part of OpenRC. It is subject to the license terms in + * the LICENSE file found in the top-level directory of this + * distribution and at https://github.com/OpenRC/openrc/blob/HEAD/LICENSE + * This file may not be copied, modified, propagated, or distributed + * except according to the terms contained in the LICENSE file. + */ + +#include <sys/stat.h> +#include <sys/time.h> +#include <sys/types.h> + +#include <errno.h> +#include <fcntl.h> +#include <getopt.h> +#include <limits.h> +#include <stdbool.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <time.h> +#include <unistd.h> +#include <utime.h> + +#include "einfo.h" +#include "queue.h" +#include "rc.h" +#include "misc.h" +#include "_usage.h" + +const char *applet = NULL; +const char *extraopts = NULL; +const char getoptstring[] = "aot:suTF:" getoptstring_COMMON; +const struct option longopts[] = { + { "starting", 0, NULL, 'a'}, + { "stopping", 0, NULL, 'o'}, + { "type", 1, NULL, 't'}, + { "notrace", 0, NULL, 'T'}, + { "strict", 0, NULL, 's'}, + { "update", 0, NULL, 'u'}, + { "deptree-file", 1, NULL, 'F'}, + longopts_COMMON +}; +const char * const longopts_help[] = { + "Order services as if runlevel is starting", + "Order services as if runlevel is stopping", + "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", + "File to load cached deptree from", + longopts_help_COMMON +}; +const char *usagestring = NULL; + +int main(int argc, char **argv) +{ + RC_STRINGLIST *list; + RC_STRINGLIST *types; + RC_STRINGLIST *services; + RC_STRINGLIST *depends; + RC_STRING *s; + RC_DEPTREE *deptree = NULL; + int options = RC_DEP_TRACE, update = 0; + bool first = true; + char *runlevel = xstrdup(getenv("RC_RUNLEVEL")); + int opt; + char *token; + char *deptree_file = NULL; + + applet = basename_c(argv[0]); + types = rc_stringlist_new(); + while ((opt = getopt_long(argc, argv, getoptstring, + longopts, (int *) 0)) != -1) + { + switch (opt) { + case 'a': + options |= RC_DEP_START; + break; + case 'o': + options |= RC_DEP_STOP; + break; + case 's': + options |= RC_DEP_STRICT; + break; + case 't': + while ((token = strsep(&optarg, ","))) + rc_stringlist_add(types, token); + break; + case 'u': + update = 1; + break; + case 'T': + options &= RC_DEP_TRACE; + break; + case 'F': + deptree_file = xstrdup(optarg); + break; + + case_RC_COMMON_GETOPT + } + } + + if (deptree_file) { + if (!(deptree = rc_deptree_load_file(deptree_file))) + eerrorx("failed to load deptree"); + } else { + if (!(deptree = _rc_deptree_load(update, NULL))) + eerrorx("failed to load deptree"); + } + + if (!runlevel) + runlevel = rc_runlevel_get(); + + services = rc_stringlist_new(); + while (optind < argc) { + list = rc_stringlist_new(); + rc_stringlist_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_stringlist_add(services, argv[optind]); + + rc_stringlist_free(depends); + rc_stringlist_free(list); + optind++; + } + if (!TAILQ_FIRST(services)) { + rc_stringlist_free(services); + rc_stringlist_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 (!TAILQ_FIRST(types)) { + rc_stringlist_add(types, "ineed"); + rc_stringlist_add(types, "iuse"); + } + + depends = rc_deptree_depends(deptree, types, services, + runlevel, options); + + if (TAILQ_FIRST(depends)) { + TAILQ_FOREACH(s, depends, entries) { + if (first) + first = false; + else + printf (" "); + printf ("%s", s->value); + + } + printf ("\n"); + } + + rc_stringlist_free(types); + rc_stringlist_free(services); + rc_stringlist_free(depends); + rc_deptree_free(deptree); + free(runlevel); + return EXIT_SUCCESS; +} |