void sh_kill_sub()
{
SH_MUTEX_LOCK(mutex_sub);
if (sh_child_pid != -1)
{
int status;
#ifdef WCONTINUED
int wflags = WNOHANG|WUNTRACED|WCONTINUED;
#else
int wflags = WNOHANG|WUNTRACED;
#endif
close (parent2child[1]);
close (child2parent[0]);
/* Let's be rude. */
kill(sh_child_pid, SIGKILL);
retry_msleep(1,0);
if (sh_wait_ret == 0)
sh_wait_ret = waitpid( -1, &status, wflags);
else
sh_wait_ret = waitpid(sh_child_pid, &status, wflags);
sh_child_pid = -1;
}
SH_MUTEX_UNLOCK(mutex_sub);
return;
}
static ssize_t sh_sub_write(int fd, const void *buf, size_t count)
{
const char * mbuf = (const char *) buf;
ssize_t rcount;
int ttl = 5; /* 0, 1, 9, 81, 729 millisec */
int tti = 1;
do {
rcount = write(fd, mbuf, count);
if (rcount > 0)
{
count -= rcount; mbuf += rcount; --ttl;
}
if (count > 0)
{
if (ttl > 0)
{
retry_msleep(0, tti);
tti *= 9;
}
else
{
return -1;
}
}
} while (count > 0 && (errno == EAGAIN || errno == EWOULDBLOCK));
if (count > 0)
return -1;
return 0;
}
static ssize_t sh_sub_read(int fd, void *buf, size_t count)
{
char * mbuf = (char *) buf;
ssize_t rcount;
int ttl = 5; /* 0, 1, 9, 81, 729 millisec */
int tti = 1;
do {
rcount = read(fd, mbuf, count);
if (rcount > 0)
{
count -= rcount; mbuf += rcount; --ttl;
}
if (count > 0)
{
if (ttl > 0)
{
retry_msleep(0, tti);
tti *= 9;
}
else
{
if (rcount >= 0)
errno = ETIMEDOUT;
return -1;
}
}
} while (count > 0 &&
(errno == EAGAIN || errno == EWOULDBLOCK || errno == EINTR));
if (count > 0)
return -1;
return 0;
}
/*************
*
* module timer
*
*************/
int sh_utmp_timer (time_t tcurrent)
{
#if !defined(HAVE_PTHREAD)
retry_msleep(1, 0);
if ((time_t) (tcurrent - lastcheck) >= ShUtmpInterval)
{
lastcheck = tcurrent;
return (-1);
}
return 0;
#else
int errnum = 0;
if ( (sh.flag.isdaemon == S_TRUE || sh.flag.loop == S_TRUE) &&
sh.flag.checkSum != SH_CHECK_INIT )
{
sh_inotify_wait_for_change(mode_path[1], &inotify_watch,
&errnum, ShUtmpInterval);
}
lastcheck = tcurrent;
if (SH_INOTIFY_ERROR(errnum))
{
char ebuf[SH_ERRBUF_SIZE];
SH_MUTEX_LOCK(mutex_thread_nolog);
sh_error_message(errnum, ebuf, sizeof(ebuf));
sh_error_handle (SH_ERR_WARN, FIL__, __LINE__, errnum, MSG_E_SUBGEN,
ebuf,
_("sh_utmp_timer") );
SH_MUTEX_UNLOCK(mutex_thread_nolog);
}
return -1;
#endif
}
