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/*
rc-update
Manage init scripts and runlevels
Copyright 2007 Gentoo Foundation
Released under the GPLv2
*/
#define APPLET "rc-update"
#include <errno.h>
#include <getopt.h>
#include <limits.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "builtins.h"
#include "einfo.h"
#include "rc.h"
#include "rc-misc.h"
#include "strlist.h"
static char *applet = NULL;
/* Return the number of changes made:
* -1 = no changes (error)
* 0 = no changes (nothing to do)
* 1+ = number of runlevels updated
*/
static ssize_t add (const char *runlevel, const char *service)
{
ssize_t retval = -1;
if (! rc_service_exists (service))
eerror ("%s: service `%s' does not exist", applet, service);
else if (! rc_runlevel_exists (runlevel))
eerror ("%s: runlevel `%s' does not exist", applet, runlevel);
else if (rc_service_in_runlevel (service, runlevel)) {
ewarn ("%s: %s already installed in runlevel `%s'; skipping",
applet, service, runlevel);
retval = 0;
} else if (rc_service_add (runlevel, service)) {
einfo ("%s added to runlevel %s", service, runlevel);
retval = 1;
} else
eerror ("%s: failed to add service `%s' to runlevel `%s': %s",
applet, service, runlevel, strerror (errno));
return (retval);
}
static ssize_t delete (const char *runlevel, const char *service)
{
ssize_t retval = -1;
if (rc_service_in_runlevel (service, runlevel)) {
if (rc_service_delete (runlevel, service)) {
einfo ("%s removed from runlevel %s", service, runlevel);
retval = 1;
} else
eerror ("%s: failed to remove service `%s' from runlevel `%s': %s",
applet, service, runlevel, strerror (errno));
} else if (! rc_service_exists (service))
eerror ("%s: service `%s' does not exist", applet, service);
else if (! rc_runlevel_exists (runlevel))
eerror ("%s: runlevel `%s' does not exist", applet, runlevel);
else
retval = 0;
return (retval);
}
static void show (char **runlevels, bool verbose)
{
char *service;
char **services = rc_services_in_runlevel (NULL);
char *runlevel;
int i;
int j;
STRLIST_FOREACH (services, service, i) {
char **in = NULL;
bool inone = false;
STRLIST_FOREACH (runlevels, runlevel, j) {
if (rc_service_in_runlevel (service, runlevel)) {
rc_strlist_add (&in, runlevel);
inone = true;
} else {
char buffer[PATH_MAX];
memset (buffer, ' ', strlen (runlevel));
buffer[strlen (runlevel)] = 0;
rc_strlist_add (&in, buffer);
}
}
if (! inone && ! verbose)
continue;
printf (" %20s |", service);
STRLIST_FOREACH (in, runlevel, j)
printf (" %s", runlevel);
printf ("\n");
rc_strlist_free (in);
}
rc_strlist_free (services);
}
#include "_usage.h"
#define getoptstring "adsv" getoptstring_COMMON
static struct option longopts[] = {
{ "add", 0, NULL, 'a'},
{ "delete", 0, NULL, 'd'},
{ "show", 0, NULL, 's'},
{ "verbose", 0, NULL, 'v'},
longopts_COMMON
{ NULL, 0, NULL, 0}
};
static const char * const longopts_help[] = {
"Add the init.d to runlevels",
"Delete init.d from runlevels",
"Show init.d's in runlevels",
"Be verbose!",
longopts_help_COMMON
};
#include "_usage.c"
#define DOADD (1 << 0)
#define DODELETE (1 << 1)
#define DOSHOW (1 << 2)
int rc_update (int argc, char **argv)
{
int i;
char *service = NULL;
char **runlevels = NULL;
char *runlevel;
int action = 0;
bool verbose = false;
int opt;
int retval = EXIT_FAILURE;
applet = argv[0];
while ((opt = getopt_long (argc, argv, getoptstring,
longopts, (int *) 0)) != -1)
{
switch (opt) {
case 'a':
action |= DOADD;
break;
case 'd':
action |= DODELETE;
break;
case 's':
action |= DOSHOW;
break;
case 'v':
verbose = true;
break;
case_RC_COMMON_GETOPT
}
}
if ((action & DOSHOW && action != DOSHOW) ||
(action & DOADD && action != DOADD) ||
(action & DODELETE && action != DODELETE))
eerrorx ("%s: cannot mix commands", applet);
/* We need to be backwards compatible */
if (! action) {
if (optind < argc) {
if (strcmp (argv[optind], "add") == 0)
action = DOADD;
else if (strcmp (argv[optind], "delete") == 0 ||
strcmp (argv[optind], "del") == 0)
action = DODELETE;
else if (strcmp (argv[optind], "show") == 0)
action = DOSHOW;
if (action)
optind++;
else
eerrorx ("%s: invalid command `%s'", applet, argv[optind]);
}
if (! action && opt)
action = DOSHOW;
}
if (optind >= argc) {
if (! action & DOSHOW)
eerrorx ("%s: no service specified", applet);
} else {
service = argv[optind];
optind++;
while (optind < argc)
if (rc_runlevel_exists (argv[optind]))
rc_strlist_add (&runlevels, argv[optind++]);
else {
rc_strlist_free (runlevels);
eerrorx ("%s: `%s' is not a valid runlevel", applet, argv[optind]);
}
}
retval = EXIT_SUCCESS;
if (action & DOSHOW) {
if (service)
rc_strlist_add (&runlevels, service);
if (! runlevels)
runlevels = rc_get_runlevels ();
show (runlevels, verbose);
} else {
if (! service)
eerror ("%s: no service specified", applet);
else if (! rc_service_exists (service))
eerror ("%s: service `%s' does not exist", applet, service);
else {
ssize_t num_updated = 0;
ssize_t (*actfunc)(const char *runlevel, const char *service);
if (action & DOADD)
actfunc = add;
else if (action & DODELETE)
actfunc = delete;
else
eerrorx ("%s: invalid action", applet);
if (! runlevels)
runlevels = rc_get_runlevels ();
STRLIST_FOREACH (runlevels, runlevel, i) {
ssize_t ret = actfunc (runlevel, service);
if (ret < 0)
retval = EXIT_FAILURE;
num_updated += ret;
}
if (retval == EXIT_SUCCESS && num_updated == 0)
ewarnx ("%s: service `%s' not found in any of the specified runlevels", applet, service);
}
}
rc_strlist_free (runlevels);
return (retval);
}
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