void bear_write_message(int fd, bear_message_t const * e)
{
write_pid(fd, e->pid);
write_pid(fd, e->ppid);
write_string(fd, e->fun);
write_string(fd, e->cwd);
write_string_array(fd, e->cmd);
}
int
daemon_init(const char *pidfile) {
int pid = check_pid(pidfile);
if (pid) {
fprintf(stderr, "mtask is already running, pid = %d.\n", pid);
return 1;
}
#ifdef __APPLE__
fprintf(stderr, "'daemon' is deprecated: first deprecated in OS X 10.5 , use launchd instead.\n");
#else
if (daemon(1,0)) {
fprintf(stderr, "Can't daemonize.\n");
return 1;
}
#endif
pid = write_pid(pidfile);
if (pid == 0) {
return 1;
}
return 0;
}
/*
* call this only after you've checked if another instance is running
* with check_if_another_instance_running() because the pid file can
* contain old pid (if the process has been killed from task manager)
* and we don't want to kill another potential process with the same pid.
*/
void read_pid_and_terminate() {
int pid = 0;
FILE* get_pid = fopen(PID, "r");
if (get_pid == NULL) die("failed to open the pid file for reading!");
fscanf(get_pid, "%d", &pid);
fclose(get_pid);
LOG(INFO, "read pid=%d from %s", pid, PID);
if (pid == 0) {
LOG(INFO, "Process not running, exiting");
return;
}
char* kill_command = print_to_string("kill %d", pid);
FILE* kill = popen(kill_command, "r");
free(kill_command);
if (kill == NULL) die("failed to call 'kill PID'");
LOG(INFO, "instance with pid=%d terminated", pid);
pclose(kill);
turn_light_off();
write_pid(0);
}
static void
babysit (pid_t grandchild_pid,
int parent_pipe)
{
int sigchld_pipe[2];
/* We don't exec, so we keep parent state, such as the pid that
* _dbus_verbose() uses. Reset the pid here.
*/
_dbus_verbose_reset ();
/* I thought SIGCHLD would just wake up the poll, but
* that didn't seem to work, so added this pipe.
* Probably the pipe is more likely to work on busted
* operating systems anyhow.
*/
if (pipe (sigchld_pipe) < 0)
{
_dbus_warn ("Not enough file descriptors to create pipe in babysitter process\n");
exit (1);
}
babysit_sigchld_pipe = sigchld_pipe[WRITE_END];
#ifndef __SYMBIAN32__
_dbus_set_signal_handler (SIGCHLD, babysit_signal_handler);
#endif
write_pid (parent_pipe, grandchild_pid);
check_babysit_events (grandchild_pid, parent_pipe, 0);
while (TRUE)
{
DBusPollFD pfds[2];
pfds[0].fd = parent_pipe;
pfds[0].events = _DBUS_POLLIN;
pfds[0].revents = 0;
pfds[1].fd = sigchld_pipe[READ_END];
pfds[1].events = _DBUS_POLLIN;
pfds[1].revents = 0;
_dbus_poll (pfds, _DBUS_N_ELEMENTS (pfds), -1);
if (pfds[0].revents != 0)
{
check_babysit_events (grandchild_pid, parent_pipe, pfds[0].revents);
}
else if (pfds[1].revents & _DBUS_POLLIN)
{
char b;
read (sigchld_pipe[READ_END], &b, 1);
/* do waitpid check */
check_babysit_events (grandchild_pid, parent_pipe, 0);
}
}
exit (1);
}
void no_daemon_start(char * path, int nbCoreFiles, const char *name, void (*on_start) (void),
void (*on_stop) (void), void (*on_hup) (void)) {
int pid;
DEBUG_FUNCTION;
sprintf(pid_file, "%s%s", DAEMON_PID_DIRECTORY, name);
// check if running
if (read_pid(name, &pid) == 0 && kill(pid, 0) == 0) {
fprintf(stderr, "%s already running as pid: %d\n", pid_file, pid);
return;
}
rozofs_signals_declare (path,nbCoreFiles);
if (write_pid(name) != 0) {
fatal("write_pid failed: %s", strerror(errno));
return;
}
rozofs_attach_crash_cbk(remove_pid_file);
if (on_stop) rozofs_attach_crash_cbk((rozofs_attach_crash_cbk_t)on_stop);
if (on_hup) rozofs_attach_hgup_cbk((rozofs_attach_crash_cbk_t)on_hup);
on_start();
}
int main(int argc, char* argv[])
{
signal(SIGINT, signal_term);
signal(SIGTERM, signal_term);
int daemon_mode = (argc > 1 && strcmp(argv[1], "-d") == 0) ? 1 : 0;
if (daemon_mode) {
if (file_exists(file_pid)) {
perror("already running");
exit(1);
}
pid_t pid = fork();
// fork failed
if (pid < 0) {
return -1;
} else if (pid != 0) {
// fork successed, parent exit
return 0;
}
write_pid();
setsid();
chdir("/");
umask(0755);
close(0);
close(1);
close(2);
}
lcd_connect();
lcd_reset();
lcd_clear();
lcd_toggle_backlight();
sleep(1);
do {
show_hostname();
show_time();
show_uptime();
show_mems();
show_loads();
show_diskspace(DEFAULT_DISKSPACE_DIR);
show_ip(DEFAULT_NETWORK_INTERFACE);
show_traffic(DEFAULT_NETWORK_INTERFACE);
sleep(10);
} while (!signal_term_received);
lcd_clear();
lcd_reset();
lcd_disconnect();
unlink(file_pid);
return 0;
}
void suppr(int sig)
{
write_pid("pid.dat", pid);
kill(ordo, SIGUSR2);
printf("Envoi à l'ordo de %d\n", pid);
kill(pid, SIGKILL);
}
/**
* 进行服务初始化相关工作
*/
void ADService::adservice_init() {
memset(modules,0,sizeof(modules));
dosignals();
int pid = write_pid(DEFAULT_DAEMON_FILE);
if(pid==0){
DebugMessage("can not write pid file.exit");
exit(0);
}
}
static void init(const char *pid_file)
{
if (write_pid(pid_file))
WARNING("can't write PID file to %s: %m", pid_file);
if (atexit(cleanup))
WARNING("atexit() failed: %m");
if (register_signal_handler(SIGTERM, sigterm))
WARNING("can't catch SIGTERM: %m");
}
int main()
{
openlog("kappaio-watch", LOG_CONS|LOG_PID, LOG_USER);
syslog(LOG_INFO, "kappaio-watch v1.01");
daemonize();
if (write_pid() < 0)
{
exit(0);
}
int keepAliveCountRef = 0;
int keepAliveCount;
int tolerance = 0;
while(1)
{
if (checkByPIDFile() < 0)
{
syslog(LOG_INFO, "process is not running");
/* restart process immediately*/
system("/etc/init.d/kappaio restart > /dev/null");
goto SKIP_THE_REST;
}
keepAliveCount = readKLA();
if (keepAliveCount < 0)
{
syslog(LOG_INFO, "keep alive counter < 0, restarting...");
/* restart process immediately*/
system("/etc/init.d/kappaio restart > /dev/null");
goto SKIP_THE_REST;
}
if (keepAliveCount != keepAliveCountRef)
{
keepAliveCountRef = keepAliveCount;
tolerance = 0;
} else
{
if (tolerance > 0)
{
syslog(LOG_INFO, "tolerance > 0, restarting...");
/* restart process immediately*/
system("/etc/init.d/kappaio restart > /dev/null");
tolerance = 0;
} else {
tolerance++;
}
}
SKIP_THE_REST:
kSleep(10);
}
}
void ex_program(int sig) {
LOG(WARN, "Caught signal: %d! Turning light off...\n", sig);
terminated = 1;
turn_light_off();
write_pid((pid_t) 0);
exit(0);
(void) signal(SIGINT, SIG_DFL);
// (void) signal(SIGINT, ex_program);
}
static void
start_chibach_up() {
debug( "Starting chibach ... (CHIBACH_HOME = %s)", get_chibach_home() );
maybe_daemonize();
write_pid( get_chibach_pid(), get_chibach_name() );
chibach_started = true;
start_messenger();
}
int Application::main(int argc, char **argv){
conf = NULL;
welcome();
parse_args(argc, argv);
init();
write_pid();
run();
remove_pidfile();
delete conf;
return 0;
}
static void
test_write_pid_fail_if_open_fail() {
will_return( mock_open, -1 );
// Test if correctly opened.
char path[] = "/home/yasuhito/trema/tmp/chess.pid";
expect_string( mock_open, pathname, path );
expect_value( mock_open, flags, ( O_RDWR | O_CREAT ) );
expect_value( mock_open, mode, 0600 );
expect_string( mock_die, message, "Could not create a PID file: /home/yasuhito/trema/tmp/chess.pid" );
expect_assert_failure( write_pid( "/home/yasuhito/trema/tmp", "chess" ) );
}
int monikor_daemonize(monikor_t *mon) {
if (mon->config->daemonize) {
if (perform_daemonize(mon))
return 1;
}
if (drop_privileges(mon))
return 1;
if (mon->config->daemonize) {
if (write_pid(mon)) {
monikor_log(LOG_ERR, "Cannot write pid file: %s\n", strerror(errno));
}
}
return 0;
}
struct switch_arguments *
init_parse_args( int argc, char **argv ) {
struct switch_arguments *args = xmalloc( sizeof( struct switch_arguments ) );
parse_options( args, argc, argv );
int efd[ 2 ];
uint32_t i;
for ( i = 0; i < sizeof( efd ) / sizeof( efd[ 0 ] ); i++ ) {
efd[ i ] = create_event_fd();
if ( efd[ i ] == -1 ) {
error( "failed to create_event_fd %d", errno );
xfree( args );
return NULL;
}
}
memcpy( args->efd, &efd, sizeof( efd ) );
args->to_protocol_queue = create_message_queue();
assert( args->to_protocol_queue != NULL );
char *switch_log = get_switch_log();
logging_type log_output_type = LOGGING_TYPE_FILE;
if ( args->run_as_daemon == false ) {
log_output_type |= LOGGING_TYPE_STDOUT;
}
char name[ PATH_MAX ];
snprintf( name, PATH_MAX, "%s.%#" PRIx64, args->progname, args->datapath_id );
init_log( name, switch_log, log_output_type );
xfree( switch_log );
char *switch_pid_dir = get_switch_pid_dir();
write_pid( switch_pid_dir, name );
char cmd[ PATH_MAX ];
/*
* change the pid file permissions to allow deletion since switch is started
* as sudo. This would become obsolete if sudo is removed.
*/
snprintf( cmd, PATH_MAX, "chmod 0666 %s/%s.pid", switch_pid_dir, name );
system( cmd );
xfree( switch_pid_dir );
ignore_sigpipe();
#ifdef NOT_TESTED
if ( args->run_as_daemon == true ) {
daemonize( get_switch_home() );
}
#endif
return args;
}
void start_wall(){
current_dir = malloc(40);
style = malloc(20);
read_config(current_dir, style, &time_gap);
int pid = fork();
if(!pid){
while(1){
read_images();
sleep(time_gap);
}
}else{
write_pid(pid);
}
}
int main( int argc, char *argv[] )
{
selected_item = 0;
scroll_count = 800;
alpha_up = 1;
alpha = 0;
if ( argc > 1 )
{
strcpy( pdm_dir, argv[1] );
if ( pdm_dir[strlen(pdm_dir)-1] != '/' )
strcat( pdm_dir, "/" );
}
else
{
fprintf(stderr, "Usage: %s pdm_exec_dir\n", argv[0] );
exit(0);
}
write_pid();
printf("reading configuration file: %s\n", pdm_dir_and("data/pdm.conf") );
cfg_read( pdm_dir_and("data/pdm.conf") );
if( general->autoboot_item >= 0 )
{
execl( item->exec_path[general->autoboot_item], item->exec_path[general->autoboot_item], NULL);
free( item );
free( general );
exit(0);
}
gui_init();
gui_load();
while( !gui_done )
{
gui_draw();
gui_events();
}
gui_clean();
free(item);
free(general);
return 0;
}
void
initialize (void)
{
cfgfile = cfgfile ? cfgfile : CFGFILE;
logfile = logfile ? logfile : LOGFILE;
pidfile = pidfile ? pidfile : PIDFILE;
read_conf (cfgfile);
if (mode & DAEMON)
{
/* redirect stdout & stderr to a log file */
redirect_to_log (logfile, STDOUT_FILENO | STDERR_FILENO);
write_pid (pidfile);
}
dns_random_init (seed);
}
int
main(int argc, char **argv)
{
struct stat sbuf;
char *file, *flags = NULL;
int c, err = 0, pid = 0;
__pmSetProgname(argv[0]);
while ((c = getopt(argc, argv, "f:p:")) != EOF) {
switch (c) {
case 'f':
flags = optarg;
break;
case 'p':
pid = atoi(optarg);
break;
default:
err++;
}
}
if (err || argc != optind + 1)
usage();
file = argv[optind];
c = open(file, O_RDWR, 0644);
if (c < 0) {
fprintf(stderr, "Cannot open %s for writing: %s\n",
file, strerror(errno));
exit(1);
}
fstat(c, &sbuf);
addr = __pmMemoryMap(c, sbuf.st_size, 1);
close(c);
if (flags)
write_flags(flags);
if (pid)
write_pid(pid);
__pmMemoryUnmap(addr, sbuf.st_size);
exit(0);
}
PUBLIC int main(int argc, char *argv[]) {
if (argc < 2) {
fprintf(stderr,
"Usage: move [-t] <dbfilename> [<move-source-code-file> ...]\n"
"\t-t\tInhibits loading threads which were active when the DB was saved\n");
exit(MOVE_EXIT_ERROR);
}
signal(SIGINT, siginthandler); /* %%% This can be made to emergency-flush
the database to disk, later on %%% */
write_pid();
init_gc();
init_object();
init_prim();
init_vm_global();
init_thread();
checkpoint_filename = "move.checkpoint";
install_primitives();
{
int load_threads = 1;
if (!strcmp(argv[1], "-t")) {
load_threads = 0;
argv++;
argc--;
}
import_db(argv[1], load_threads);
}
bind_primitives_to_symbols();
import_cmdline_files(argc - 2, argv + 2);
run_main_loop();
done_gc();
return MOVE_EXIT_OK;
}
/*
Detach from current terminal, write pidfile, kill parent
*/
bool detach(void) {
setup_signals();
/* First check if we can open a fresh new pidfile */
#ifndef HAVE_MINGW
if(!write_pidfile())
return false;
/* If we succeeded in doing that, detach */
closelogger();
#endif
if(do_detach) {
#ifndef HAVE_MINGW
if(daemon(0, 0)) {
fprintf(stderr, "Couldn't detach from terminal: %s",
strerror(errno));
return false;
}
/* Now UPDATE the pid in the pidfile, because we changed it... */
if(!write_pid(pidfilename)) {
fprintf(stderr, "Could not write pid file %s: %s\n", pidfilename, strerror(errno));
return false;
}
#else
if(!statushandle)
exit(install_service());
#endif
}
openlogger(identname, use_logfile?LOGMODE_FILE:(do_detach?LOGMODE_SYSLOG:LOGMODE_STDERR));
logger(LOG_NOTICE, "tincd %s (%s %s) starting, debug level %d",
VERSION, __DATE__, __TIME__, debug_level);
xalloc_fail_func = memory_full;
return true;
}
int start(void)
{
int pid;
int ret;
// fork a subprocess to execute the job
pid = fork();
if (pid < 0) // failed to fork
{
printf("\x1B[31mFailed to fork subprocess\033[0m\n");
return -2;
}
else if (pid == 0) // child process
{
pid = getpid();
// write pid to file to make sure that the router is not allowed to be
// executed twice at the same time
ret = write_pid(pid, router_id);
if (ret)
{
return ret;
}
printf("\x1B[32mRouter%d\033[0m starts at pid=\x1B[32m%d\033[0m\n", router_id, pid);
// start the router demon
ret = router_demon_start();
if (ret)
{
return ret;
}
remove_pid(router_id);
}
else // parent process
{
}
return 0;
}
static void
test_write_pid_fail_if_lockf_fail() {
will_return( mock_open, 1111 );
will_return( mock_lockf, -1 );
// Test if correctly locked.
char path[] = "/home/yasuhito/trema/tmp/chess.pid";
expect_string( mock_open, pathname, path );
expect_value( mock_open, flags, ( O_RDWR | O_CREAT ) );
expect_value( mock_open, mode, 0600 );
// Test if correctly locked.
expect_value( mock_lockf, fd, 1111 );
expect_value( mock_lockf, cmd, F_TLOCK );
expect_value( mock_lockf, len, 0 );
// lockf_return_value = -1;
expect_string( mock_die, message, "Could not acquire a lock on a PID file: /home/yasuhito/trema/tmp/chess.pid" );
expect_assert_failure( write_pid( "/home/yasuhito/trema/tmp", "chess" ) );
}
int
daemon_init(const char *pidfile) {
// check stored process id is valid or not
// if it is valid then indicate the process is already running, just return
int pid = check_pid(pidfile);
if (pid) {
fprintf(stderr, "Skynet is already running, pid = %d.\n", pid);
return 1;
}
#ifdef __APPLE__
fprintf(stderr, "'daemon' is deprecated: first deprecated in OS X 10.5 , use launchd instead.\n");
#else
// int daemon(int nochdir, int noclose):
// 1. this function is for programs wishing to detach themselves form the controlling terminal
// and run in the background as system daemons.
// 2. if `nochdir` is 0, it changes the calling process's current working directory
// to the root directory (/); otherwise, the current working directory is left unchanged
// 3. if `noclose` is 0, it redirects stdin stdout stderr to `/dev/null`,
// otherwise, no changes are made to these file descriptors
// daemonize current process: daemon or service is a background process that is designed to run auto without ui
// and keep current working directory and redirect standand stream to `/dev/null`.
if (daemon(1,0)) {
fprintf(stderr, "Can't daemonize.\n");
return 1;
}
#endif
// create the pid file if not exist
// lock this pid file
// get current process id and write to this file
// note that the pid file is not closed
pid = write_pid(pidfile);
if (pid == 0) {
return 1;
}
return 0;
}
int main(int argc, char **argv)
{
int ret;
signal(SIGINT, suppr);
ordo = read_pid("ordo.dat");
printf("pid ordo = %d\n", ordo);
if(argc == 1)
{
fprintf(stderr, "pas de programme specifié\n"
"usage: ./lanceur prog [prog args]\n");
exit(0);
}
if((pid = fork()) == -1)
{
perror("erreur fork");
exit(1);
}
if(pid == 0)
{
ret = execvp(argv[1], argv+1);
if(ret == -1)
exit(2);
}
else
{
write_pid("pid.dat", pid);
printf("Envoi à l'ordo de %d\n", pid);
kill(ordo, SIGUSR1);
wait(NULL);
suppr(0);
}
return 0;
}
/*
check for an existing tinc for this net, and write pid to pidfile
*/
static bool write_pidfile(void) {
pid_t pid;
pid = check_pid(pidfilename);
if(pid) {
if(netname)
fprintf(stderr, "A tincd is already running for net `%s' with pid %ld.\n",
netname, (long)pid);
else
fprintf(stderr, "A tincd is already running with pid %ld.\n", (long)pid);
return false;
}
/* if it's locked, write-protected, or whatever */
if(!write_pid(pidfilename)) {
fprintf(stderr, "Could write pid file %s: %s\n", pidfilename, strerror(errno));
return false;
}
return true;
}
int main(int argc, char *argv[])
{
int len, addrlen, sfd;
struct sockaddr_in serv_addr;
char data[512];
addrlen = sizeof(struct sockaddr_in);
parse_cmd(&argc, argv);
if(!check_instance()){
DEBUG_MSG("One instance is running!\n");
exit(1);
}
signal(SIGTERM, handle_int_signal);
signal(SIGINT, handle_int_signal);
signal(SIGHUP, handle_int_signal);
if(!DEBUG_ON)
init_daemon();
write_pid();
gbl_fd = sfd = open_udp_server_socket(SERV_PORT, &serv_addr);
while (1) {
memset(data, '\0', sizeof(data));
len =
recvfrom(sfd, data, sizeof(data), 0,
(struct sockaddr *) &serv_addr, &addrlen);
printf("got %s\n", data);
system(data);
}
close(gbl_fd);
return 0;
}
static void daemonize (void)
{
// Process and Session ID
pid_t pid, sid;
syslog(LOG_INFO,"Going into daemon mode...");
// Fork off process
pid = fork();
if (pid < 0)
exit(EXIT_FAILURE);
else if (pid > 0)
exit(EXIT_SUCCESS);
// Change umask
umask(0);
// Create a new SID for the child process
sid = setsid();
if (sid < 0)
exit(EXIT_FAILURE);
// Change current working directory
if ((chdir("/")) < 0)
exit(EXIT_FAILURE);
// Write PID file
write_pid(sid);
if (!config.quiet)
printf("Going into background...\n");
// Close file descriptors
close(STDIN_FILENO);
close(STDOUT_FILENO);
close(STDERR_FILENO);
}
int main(int argc, char **argv) {
int delay;
int keepnum;
if (argc<3) {
fprintf(stderr,
"Usage: checkpoint-cleanup <filename-prefix> <time-between-cleans>\n"
" <how-many-to-keep>\n");
exit(1);
}
prefix = argv[1]; /* GLOBAL VARIABLES! */
prefixlen = strlen(prefix);
delay = atoi(argv[2]);
keepnum = atoi(argv[3]);
if (delay < MINDELAY) {
fprintf(stderr, "Delay must be >= %d seconds.\n", MINDELAY);
exit(1);
}
if (keepnum < 1) {
fprintf(stderr, "Number of files to keep must be 1 or greater.\n");
exit(1);
}
write_pid();
while (1) {
cleanup(keepnum);
sleep(delay);
}
return 0;
}