257 lines
6.6 KiB
C
257 lines
6.6 KiB
C
/*
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rc-update
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Manage init scripts and runlevels
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*/
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/*
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* Copyright 2007-2008 Roy Marples
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* All rights reserved
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <errno.h>
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#include <getopt.h>
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#include <limits.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 <unistd.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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extern const char *applet;
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/* Return the number of changes made:
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* -1 = no changes (error)
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* 0 = no changes (nothing to do)
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* 1+ = number of runlevels updated
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*/
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static int add (const char *runlevel, const char *service)
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{
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int retval = -1;
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if (! rc_service_exists (service))
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eerror ("%s: service `%s' does not exist", applet, service);
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else if (rc_service_in_runlevel (service, runlevel)) {
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ewarn ("%s: %s already installed in runlevel `%s'; skipping",
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applet, service, runlevel);
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retval = 0;
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} else if (rc_service_add (runlevel, service)) {
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einfo ("%s added to runlevel %s", service, runlevel);
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retval = 1;
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} else
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eerror ("%s: failed to add service `%s' to runlevel `%s': %s",
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applet, service, runlevel, strerror (errno));
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return (retval);
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}
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static int delete (const char *runlevel, const char *service)
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{
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int retval = -1;
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errno = 0;
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if (rc_service_delete (runlevel, service)) {
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einfo ("%s removed from runlevel %s", service, runlevel);
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return 1;
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}
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if (errno == ENOENT)
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eerror ("%s: service `%s' is not in the runlevel `%s'",
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applet, service, runlevel);
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else
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eerror ("%s: failed to remove service `%s' from runlevel `%s': %s",
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applet, service, runlevel, strerror (errno));
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return (retval);
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}
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static void show (char **runlevels, bool verbose)
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{
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char *service;
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char **services = rc_services_in_runlevel (NULL);
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char *runlevel;
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int i;
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int j;
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STRLIST_FOREACH (services, service, i) {
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char **in = NULL;
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bool inone = false;
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STRLIST_FOREACH (runlevels, runlevel, j) {
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if (rc_service_in_runlevel (service, runlevel)) {
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rc_strlist_add (&in, runlevel);
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inone = true;
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} else {
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char buffer[PATH_MAX];
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memset (buffer, ' ', strlen (runlevel));
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buffer[strlen (runlevel)] = 0;
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rc_strlist_add (&in, buffer);
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}
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}
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if (! inone && ! verbose)
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continue;
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printf (" %20s |", service);
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STRLIST_FOREACH (in, runlevel, j)
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printf (" %s", runlevel);
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printf ("\n");
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rc_strlist_free (in);
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}
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rc_strlist_free (services);
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}
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#include "_usage.h"
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#define usagestring "" \
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"Usage: rc-update [options] add service <runlevel>\n" \
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" rc-update [options] del service <runlevel>\n" \
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" rc-update [options] show"
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#define getoptstring getoptstring_COMMON
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static const struct option longopts[] = {
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longopts_COMMON
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};
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static const char * const longopts_help[] = {
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longopts_help_COMMON
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};
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#include "_usage.c"
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#define DOADD (1 << 1)
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#define DODELETE (1 << 2)
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#define DOSHOW (1 << 3)
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int rc_update (int argc, char **argv)
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{
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int i;
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char *service = NULL;
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char **runlevels = NULL;
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char *runlevel;
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int action = 0;
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bool verbose = false;
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int opt;
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int retval = EXIT_FAILURE;
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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_RC_COMMON_GETOPT
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}
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}
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verbose = rc_yesno (getenv ("EINFO_VERBOSE"));
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if ((action & DOSHOW && action != DOSHOW) ||
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(action & DOADD && action != DOADD) ||
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(action & DODELETE && action != DODELETE))
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eerrorx ("%s: cannot mix commands", applet);
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/* We need to be backwards compatible */
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if (optind < argc) {
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if (strcmp (argv[optind], "add") == 0)
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action = DOADD;
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else if (strcmp (argv[optind], "delete") == 0 ||
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strcmp (argv[optind], "del") == 0)
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action = DODELETE;
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else if (strcmp (argv[optind], "show") == 0)
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action = DOSHOW;
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if (action)
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optind++;
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else
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eerrorx ("%s: invalid command `%s'", applet, argv[optind]);
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}
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if (! action)
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action = DOSHOW;
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if (optind >= argc) {
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if (! action & DOSHOW)
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eerrorx ("%s: no service specified", applet);
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} else {
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service = argv[optind];
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optind++;
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while (optind < argc)
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if (rc_runlevel_exists (argv[optind]))
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rc_strlist_add (&runlevels, argv[optind++]);
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else {
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rc_strlist_free (runlevels);
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eerrorx ("%s: `%s' is not a valid runlevel", applet, argv[optind]);
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}
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}
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retval = EXIT_SUCCESS;
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if (action & DOSHOW) {
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if (service)
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rc_strlist_add (&runlevels, service);
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if (! runlevels)
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runlevels = rc_runlevel_list ();
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show (runlevels, verbose);
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} else {
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if (! service)
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eerror ("%s: no service specified", applet);
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else {
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int num_updated = 0;
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int (*actfunc)(const char *, const char *);
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int ret;
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if (action & DOADD) {
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actfunc = add;
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} else if (action & DODELETE) {
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actfunc = delete;
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} else
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eerrorx ("%s: invalid action", applet);
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if (! runlevels)
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rc_strlist_add (&runlevels, rc_runlevel_get ());
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if (! runlevels)
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eerrorx ("%s: no runlevels found", applet);
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STRLIST_FOREACH (runlevels, runlevel, i) {
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if (! rc_runlevel_exists (runlevel)) {
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eerror ("%s: runlevel `%s' does not exist", applet, runlevel);
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continue;
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}
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ret = actfunc (runlevel, service);
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if (ret < 0)
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retval = EXIT_FAILURE;
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num_updated += ret;
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}
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if (retval == EXIT_SUCCESS && num_updated == 0 && action & DODELETE)
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ewarnx ("%s: service `%s' not found in any of the specified runlevels", applet, service);
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}
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}
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rc_strlist_free (runlevels);
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return (retval);
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}
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