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/*
** signal.c for zssh
**
** Made by Matthieu Lucotte
** Login <gounter@users.sourceforge.net>
**
** Started on Thu Jun 29 19:10:55 2000 Matthieu Lucotte
** Last update Thu Oct 11 20:34:51 2001 Matthieu Lucotte
*/
#include "zssh.h"
/*
* Note: all signal handlers should make sure they
* reset themselves by calling signal() before
* they exit.
*/
#ifdef DEBUG
void print_process_status(int pid, int s)
{
if (WIFEXITED(s))
printf("process %i: exit value: %i\n", pid, WEXITSTATUS(s));
if (WIFSIGNALED(s))
printf("process %i: received signal %i\n", pid, WTERMSIG(s));
if (WIFSTOPPED(s))
printf("process %i: stopped by signal %i\n", pid, WSTOPSIG(s));
}
#endif
RETSIGTYPE sigchld_handler(sig)
int sig;
{
int old_errno;
int pid;
int s;
int die;
old_errno = errno;
signal(SIGCHLD, sigchld_handler);
die = 0;
while (1)
{
errno = EINTR;
pid = 0;
while (pid <= 0 && errno == EINTR)
{
errno = 0;
pid = waitpid (WAIT_ANY, &s, WNOHANG);
}
if (pid <= 0)
{
errno = old_errno;
if (die)
done(0);
return;
}
#ifdef DEBUG
print_process_status(pid, s);
#endif
if (pid == gl_child_shell)
die = 1;
if (pid == gl_child_rz)
gl_child_rz = 0;
}
}
RETSIGTYPE sigint_handler(sig)
int sig;
{
signal(SIGINT, sigint_handler);
gl_repeat = 0;
if (gl_child_rz)
{
kill(gl_child_rz, SIGKILL); /* SIGTERM seems to cause sz to interfere with ^Xs */
/* so let's be more persuasive =) */
gl_interrupt = 1;
}
}
RETSIGTYPE sigwinch_handler(sig)
int sig;
{
signal(SIGWINCH, sigwinch_handler);
ioctl(0, TIOCGWINSZ, &gl_win);
ioctl(gl_slave, TIOCSWINSZ, &gl_win);
kill(gl_child_shell, SIGWINCH);
}
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