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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 <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;
static void usage (void )
{
printf (
"usage: %s -a|add script runlevel1 [runlevel2 ...]\n"
" %s -d|del script [runlevel1 ...]\n"
" %s -s|show [-v|--verbose] [runlevel1 ...]\n"
" %s -h|help\n"
"\n"
"examples:\n"
" # %s add net.eth0 default\n"
" Adds the net.eth0 script (in /etc/init.d) to the `default' runlevel.\n"
"\n"
" # %s del sysklogd\n"
" Deletes the sysklogd script from all runlevels. The original script\n"
" is not deleted, just any symlinks to the script in /etc/runlevels/*.\n"
"\n"
" # %s del net.eth2 default wumpus\n"
" Delete the net.eth2 script from the default and wumpus runlevels.\n"
" All other runlevels are unaffected. Again, the net.eth2 script\n"
" residing in /etc/init.d is not deleted, just any symlinks in\n"
" /etc/runlevels/default and /etc/runlevels/wumpus.\n"
"\n"
" # %s show\n"
" Show all enabled scripts and list at which runlevels they will\n"
" execute. Run with --verbose to see all available scripts.\n",
applet, applet, applet, applet, applet, applet, applet, applet);
}
static bool add (const char *runlevel, const char *service)
{
bool retval = false;
if (! rc_service_exists (service))
eerror ("service `%s' does not exist", service);
else if (! rc_runlevel_exists (runlevel))
eerror ("runlevel `%s' does not exist", runlevel);
else if (rc_service_in_runlevel (service, runlevel)) {
ewarn ("%s already installed in runlevel `%s'; skipping",
service, runlevel);
retval = true;
} else if (rc_service_add (runlevel, service)) {
einfo ("%s added to runlevel %s", service, runlevel);
retval = true;
} else
eerror ("%s: failed to add service `%s' to runlevel `%s': %s",
applet, service, runlevel, strerror (errno));
return (retval);
}
static bool delete (const char *runlevel, const char *service)
{
bool retval = false;
if (rc_service_in_runlevel (service, runlevel)) {
if (rc_service_delete (runlevel, service)) {
einfo ("%s removed from runlevel %s", service, runlevel);
retval = true;
} else
eerror ("%s: failed to remove service `%s' from runlevel `%s': %s",
applet, service, runlevel, strerror (errno));
} else if (! rc_service_exists (service))
eerror ("service `%s' does not exist", service);
else if (! rc_runlevel_exists (runlevel))
eerror ("runlevel `%s' does not exist", runlevel);
else
retval = true;
return (retval);
}
int rc_update (int argc, char **argv)
{
int i;
int j;
char *service;
char **runlevels = NULL;
char *runlevel;
bool doadd;
int retval;
applet = argv[0];
if (argc < 2 ||
strcmp (argv[1], "show") == 0 ||
strcmp (argv[1], "-s") == 0)
{
bool verbose = false;
char **services = rc_services_in_runlevel (NULL);
for (i = 2; i < argc; i++) {
if (strcmp (argv[i], "--verbose") == 0 ||
strcmp (argv[i], "-v") == 0)
verbose = true;
else
runlevels = rc_strlist_add (runlevels, argv[i]);
}
if (! runlevels)
runlevels = rc_get_runlevels ();
STRLIST_FOREACH (services, service, i) {
char **in = NULL;
bool inone = false;
STRLIST_FOREACH (runlevels, runlevel, j) {
if (rc_service_in_runlevel (service, runlevel)) {
in = rc_strlist_add (in, runlevel);
inone = true;
} else {
char buffer[PATH_MAX];
memset (buffer, ' ', strlen (runlevel));
buffer[strlen (runlevel)] = 0;
in = 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 (runlevels);
rc_strlist_free (services);
return (EXIT_SUCCESS);
} else if (argc > 1 &&
(strcmp (argv[1], "help") == 0 ||
strcmp (argv[1], "--help") == 0 ||
strcmp (argv[1], "-h") == 0))
{
usage ();
return (EXIT_SUCCESS);
}
if (geteuid () != 0)
eerrorx ("%s: must be root to add or delete services from runlevels",
applet);
if (! (service = argv[2]))
eerrorx ("%s: no service specified", applet);
if (strcmp (argv[1], "add") == 0 ||
strcmp (argv[1], "-a") == 0)
doadd = true;
else if (strcmp (argv[1], "delete") == 0 ||
strcmp (argv[1], "del") == 0 ||
strcmp (argv[1], "-d") == 0)
doadd = false;
else
eerrorx ("%s: unknown command `%s'", applet, argv[1]);
for (i = 3; i < argc; i++)
runlevels = rc_strlist_add (runlevels, argv[i]);
if (! runlevels)
runlevels = rc_strlist_add (runlevels, rc_get_runlevel ());
retval = EXIT_SUCCESS;
STRLIST_FOREACH (runlevels, runlevel, i) {
if (doadd) {
if (! add (runlevel, service))
retval = EXIT_FAILURE;
} else {
if (! delete (runlevel, service))
retval = EXIT_FAILURE;
}
}
rc_strlist_free (runlevels);
return (retval);
}
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