/* Initialize signal handler */
void
signal_init(void)
{
signal_handler_init();
signal_set(SIGHUP, sighup, NULL);
signal_set(SIGINT, sigend, NULL);
signal_set(SIGTERM, sigend, NULL);
signal_ignore(SIGPIPE);
}
/* CHECK Child signal handling */
static void
check_signal_init(void)
{
signal_handler_init();
signal_set(SIGHUP, sighup_check, NULL);
signal_set(SIGINT, sigend_check, NULL);
signal_set(SIGTERM, sigend_check, NULL);
signal_ignore(SIGPIPE);
}
void start_work(struct task_info *ti)
{
signal_ignore();
init_plug();
init_plug_extern();
init_tcp_stream();
init_http_session();
nfq();
}
/* VRRP Child signal handling */
void
vrrp_signal_init(void)
{
signal_handler_init();
signal_set(SIGHUP, sighup_vrrp, NULL);
signal_set(SIGINT, sigend_vrrp, NULL);
signal_set(SIGTERM, sigend_vrrp, NULL);
signal_set(SIGUSR1, sigusr1_vrrp, NULL);
signal_set(SIGUSR2, sigusr2_vrrp, NULL);
signal_ignore(SIGPIPE);
}
/* Initialize signal handler */
void
signal_init(void)
{
signal_handler_init();
signal_set(SIGHUP, propogate_signal, NULL);
signal_set(SIGUSR1, propogate_signal, NULL);
signal_set(SIGUSR2, propogate_signal, NULL);
signal_set(SIGINT, sigend, NULL);
signal_set(SIGTERM, sigend, NULL);
signal_ignore(SIGPIPE);
}
/* Reload thread */
int
reload_vrrp_thread(thread * thread_obj)
{
/* set the reloading flag */
SET_RELOAD;
SYS_VRRP_LOG_INFO("VRRP configure have been reload.");
/* Close sockpool */
free_vrrp_sockpool(vrrp_data);
/* Signal handling */
signal_reset();
signal_set(SIGHUP, sighup_vrrp, NULL);
signal_set(SIGINT, sigend_vrrp, NULL);
signal_set(SIGTERM, sigend_vrrp, NULL);
signal_ignore(SIGPIPE);
/* Destroy master thread */
thread_destroy_master(master);
master = thread_make_master();
free_global_data(data);
/* add by zhouben */
backup_if_queue();
kernel_netlink_close();
free_vrrp_buffer();
gratuitous_arp_close();
ndisc_close();
vrrp_trackip_close();
/* Save previous conf data */
old_vrrp_data = vrrp_data;
vrrp_data = NULL;
#ifdef _WITH_LVS_
/* Clean ipvs related */
//ipvs_stop();
#endif
/* Reload the conf */
mem_allocated = 0;
vrrp_signal_init();
signal_set(SIGCHLD, thread_child_handler, master);
start_vrrp();
/* free backup data */
free_old_interface_queue_only();
free_vrrp_data(old_vrrp_data);
UNSET_RELOAD;
/*end of reload, store the state to file*/
reloading = 0;
vrrp_state_store();
return 0;
}
/* Terminate handler */
static void
sigend(void *v, int sig)
{
int status;
int ret;
int wait_count = 0;
sigset_t old_set, child_wait;
struct timespec timeout = {
.tv_sec = CHILD_WAIT_SECS,
.tv_nsec = 0
};
struct timeval start_time, now;
/* register the terminate thread */
thread_add_terminate_event(master);
log_message(LOG_INFO, "Stopping");
sigprocmask(0, NULL, &old_set);
if (!sigismember(&old_set, SIGCHLD)) {
sigemptyset(&child_wait);
sigaddset(&child_wait, SIGCHLD);
sigprocmask(SIG_BLOCK, &child_wait, NULL);
}
if (vrrp_child > 0) {
kill(vrrp_child, SIGTERM);
wait_count++;
}
if (checkers_child > 0) {
kill(checkers_child, SIGTERM);
wait_count++;
}
gettimeofday(&start_time, NULL);
while (wait_count) {
ret = sigtimedwait(&child_wait, NULL, &timeout);
if (ret == -1) {
if (errno == EINTR)
continue;
if (errno == EAGAIN)
break;
}
if (vrrp_child > 0 && vrrp_child == waitpid(vrrp_child, &status, WNOHANG)) {
report_child_status(status, vrrp_child, PROG_VRRP);
wait_count--;
}
if (checkers_child > 0 && checkers_child == waitpid(checkers_child, &status, WNOHANG)) {
report_child_status(status, checkers_child, PROG_CHECK);
wait_count--;
}
if (wait_count) {
gettimeofday(&now, NULL);
if (now.tv_usec < start_time.tv_usec) {
timeout.tv_nsec = (start_time.tv_usec - now.tv_usec) * 1000;
timeout.tv_sec = CHILD_WAIT_SECS - (now.tv_sec - start_time.tv_sec);
} else if (now.tv_usec == start_time.tv_usec) {
timeout.tv_nsec = 0;
timeout.tv_sec = CHILD_WAIT_SECS - (now.tv_sec - start_time.tv_sec);
} else {
timeout.tv_nsec = (1000000L + start_time.tv_usec - now.tv_usec) * 1000;
timeout.tv_sec = CHILD_WAIT_SECS - (now.tv_sec - start_time.tv_sec + 1);
}
timeout.tv_nsec = (start_time.tv_usec - now.tv_usec) * 1000;
timeout.tv_sec = CHILD_WAIT_SECS - (now.tv_sec - start_time.tv_sec);
if (timeout.tv_nsec < 0) {
timeout.tv_nsec += 1000000000L;
timeout.tv_sec--;
}
}
}
if (!sigismember(&old_set, SIGCHLD))
sigprocmask(SIG_UNBLOCK, &child_wait, NULL);
}
/* Initialize signal handler */
static void
signal_init(void)
{
signal_handler_init();
signal_set(SIGHUP, propogate_signal, NULL);
signal_set(SIGUSR1, propogate_signal, NULL);
signal_set(SIGUSR2, propogate_signal, NULL);
signal_set(SIGINT, sigend, NULL);
signal_set(SIGTERM, sigend, NULL);
signal_ignore(SIGPIPE);
}
/**
* 进行相关信号的注册
*/
void ADService::dosignals() {
signal_ignore();
signal_kill();
}
int
init_term(void)
{
#ifndef TGETENT_ACCEPTS_NULL
static char termbuf[2048]; /* the termcap buffer */
#endif
if (!*term)
return termok = TERM_BAD;
/* unset zle if using zsh under emacs */
if (!strcmp(term, "emacs"))
opts[USEZLE] = 0;
#ifdef TGETENT_ACCEPTS_NULL
/* If possible, we let tgetent allocate its own termcap buffer */
if (tgetent(NULL, term) != 1) {
#else
if (tgetent(termbuf, term) != 1) {
#endif
if (isset(INTERACTIVE))
zerr("can't find termcap info for %s", term, 0);
errflag = 0;
return termok = TERM_BAD;
} else {
char tbuf[1024], *pp;
int t0;
termok = TERM_OK;
for (t0 = 0; t0 != TC_COUNT; t0++) {
pp = tbuf;
zsfree(tcstr[t0]);
/* AIX tgetstr() ignores second argument */
if (!(pp = tgetstr(tccapnams[t0], &pp)))
tcstr[t0] = NULL, tclen[t0] = 0;
else {
tclen[t0] = strlen(pp);
tcstr[t0] = (char *) zalloc(tclen[t0] + 1);
memcpy(tcstr[t0], pp, tclen[t0] + 1);
}
}
/* check whether terminal has automargin (wraparound) capability */
hasam = tgetflag("am");
/* if there's no termcap entry for cursor up, use single line mode: *
* this is flagged by termok which is examined in zle_refresh.c *
*/
if (!tccan(TCUP)) {
tcstr[TCUP] = NULL;
termok = TERM_NOUP;
}
/* if there's no termcap entry for cursor left, use \b. */
if (!tccan(TCLEFT)) {
tcstr[TCLEFT] = ztrdup("\b");
tclen[TCLEFT] = 1;
}
/* if the termcap entry for down is \n, don't use it. */
if (tccan(TCDOWN) && tcstr[TCDOWN][0] == '\n') {
tclen[TCDOWN] = 0;
zsfree(tcstr[TCDOWN]);
tcstr[TCDOWN] = NULL;
}
/* if there's no termcap entry for clear, use ^L. */
if (!tccan(TCCLEARSCREEN)) {
tcstr[TCCLEARSCREEN] = ztrdup("\14");
tclen[TCCLEARSCREEN] = 1;
}
}
return termok;
}
/* Initialize lots of global variables and hash tables */
/**/
void
setupvals(void)
{
struct passwd *pswd;
struct timezone dummy_tz;
char *ptr;
#ifdef HAVE_GETRLIMIT
int i;
#endif
noeval = 0;
curhist = 0;
histsiz = DEFAULT_HISTSIZE;
inithist();
clwords = (char **) zcalloc((clwsize = 16) * sizeof(char *));
cmdstack = (unsigned char *) zalloc(256);
cmdsp = 0;
bangchar = '!';
hashchar = '#';
hatchar = '^';
termok = TERM_BAD;
curjob = prevjob = coprocin = coprocout = -1;
gettimeofday(&shtimer, &dummy_tz); /* init $SECONDS */
srand((unsigned int)(shtimer.tv_sec + shtimer.tv_usec)); /* seed $RANDOM */
hostnam = (char *) zalloc(256);
gethostname(hostnam, 256);
/* Set default path */
path = (char **) zalloc(sizeof(*path) * 5);
path[0] = ztrdup("/bin");
path[1] = ztrdup("/usr/bin");
path[2] = ztrdup("/usr/ucb");
path[3] = ztrdup("/usr/local/bin");
path[4] = NULL;
cdpath = mkarray(NULL);
manpath = mkarray(NULL);
fignore = mkarray(NULL);
fpath = mkarray(NULL);
mailpath = mkarray(NULL);
watch = mkarray(NULL);
psvar = mkarray(NULL);
#ifdef DYNAMIC
module_path = mkarray(ztrdup(MODULE_DIR));
modules = newlinklist();
#endif
/* Set default prompts */
if (opts[INTERACTIVE]) {
prompt = ztrdup("%m%# ");
prompt2 = ztrdup("%_> ");
} else {
prompt = ztrdup("");
prompt2 = ztrdup("");
}
prompt3 = ztrdup("?# ");
prompt4 = ztrdup("+ ");
sprompt = ztrdup("zsh: correct '%R' to '%r' [nyae]? ");
ifs = ztrdup(DEFAULT_IFS);
wordchars = ztrdup(DEFAULT_WORDCHARS);
postedit = ztrdup("");
underscore = ztrdup("");
zoptarg = ztrdup("");
zoptind = 1;
schedcmds = NULL;
ppid = (long) getppid();
mypid = (long) getpid();
term = ztrdup("");
#ifdef TIOCGWINSZ
if (!(columns = shttyinfo.winsize.ws_col))
columns = 80;
if (columns < 2)
opts[USEZLE] = 0;
if (!(lines = shttyinfo.winsize.ws_row))
lines = 24;
if (lines < 2)
opts[SINGLELINEZLE] = 1;
#else
columns = 80;
lines = 24;
#endif
/* The following variable assignments cause zsh to behave more *
* like Bourne and Korn shells when invoked as "sh" or "ksh". *
* NULLCMD=":" and READNULLCMD=":" */
if (emulation == EMULATE_KSH || emulation == EMULATE_SH) {
nullcmd = ztrdup(":");
readnullcmd = ztrdup(":");
} else {
nullcmd = ztrdup("cat");
readnullcmd = ztrdup("more");
}
/* We cache the uid so we know when to *
* recheck the info for `USERNAME' */
cached_uid = getuid();
/* Get password entry and set info for `HOME' and `USERNAME' */
if ((pswd = getpwuid(cached_uid))) {
home = metafy(pswd->pw_dir, -1, META_DUP);
cached_username = ztrdup(pswd->pw_name);
} else {
home = ztrdup("/");
cached_username = ztrdup("");
}
/* Try a cheap test to see if we can *
* initialize `PWD' from `HOME' */
if (ispwd(home))
pwd = ztrdup(home);
else if ((ptr = zgetenv("PWD")) && ispwd(ptr))
pwd = ztrdup(ptr);
else
pwd = metafy(zgetcwd(), -1, META_REALLOC);
oldpwd = ztrdup(pwd); /* initialize `OLDPWD' = `PWD' */
#ifdef __EMX__
*cdrive = _getdrive();
strcat(cdrive+1,":");
#endif
inittyptab(); /* initialize the ztypes table */
initlextabs(); /* initialize lexing tables */
createreswdtable(); /* create hash table for reserved words */
createaliastable(); /* create hash table for aliases */
createcmdnamtable(); /* create hash table for external commands */
createshfunctable(); /* create hash table for shell functions */
createbuiltintable(); /* create hash table for builtin commands */
createnameddirtable(); /* create hash table for named directories */
createparamtable(); /* create paramater hash table */
#ifdef ZLE_MODULE
add_dep("compctl", "zle");
addbuiltin("bindkey", 0, NULL, 0, -1, "zle");
addbuiltin("vared", 0, NULL, 1, 7, "zle");
addbuiltin("compctl", 0, NULL, 0, -1, "compctl");
#endif
#ifdef HAVE_GETRLIMIT
for (i = 0; i != RLIM_NLIMITS; i++) {
getrlimit(i, current_limits + i);
limits[i] = current_limits[i];
}
#endif
breaks = loops = 0;
lastmailcheck = time(NULL);
locallist = NULL;
locallevel = sourcelevel = 0;
trapreturn = 0;
noerrexit = 0;
nohistsave = 1;
dirstack = newlinklist();
bufstack = newlinklist();
hsubl = hsubr = NULL;
lastpid = 0;
bshin = SHIN ? fdopen(SHIN, "r") : stdin;
if (isset(SHINSTDIN) && !SHIN && unset(INTERACTIVE)) {
#ifdef _IONBF
setvbuf(stdin, NULL, _IONBF, 0);
#else
setlinebuf(stdin);
#endif
}
times(&shtms);
}
/* Initialize signal handling */
/**/
void
init_signals(void)
{
intr();
#ifndef QDEBUG
signal_ignore(SIGQUIT);
#endif
install_handler(SIGHUP);
install_handler(SIGCHLD);
if (interact) {
install_handler(SIGALRM);
#ifdef SIGWINCH
install_handler(SIGWINCH);
#endif
signal_ignore(SIGTERM);
}
if (jobbing) {
long ttypgrp;
#ifndef __EMX__
while ((ttypgrp = gettygrp()) != -1 && ttypgrp != mypgrp)
kill(0, SIGTTIN);
#endif
if (ttypgrp == -1) {
opts[MONITOR] = 0;
} else {
#ifndef __EMX__
signal_ignore(SIGTTOU);
signal_ignore(SIGTSTP);
signal_ignore(SIGTTIN);
#endif
signal_ignore(SIGPIPE);
attachtty(mypgrp);
}
}
if (islogin) {
signal_setmask(signal_mask(0));
} else if (interact) {
sigset_t set;
sigemptyset(&set);
sigaddset(&set, SIGINT);
sigaddset(&set, SIGQUIT);
signal_unblock(set);
}
}
