4 * Calling signal() is a non-portable, as it varies in meaning between
5 * platforms and depending on feature macros, and has stupid semantics
6 * at least some of the time.
8 * This function provides the same interface as the libc function, but
9 * provides consistent semantics. It assumes POSIX semantics for
10 * sigaction() (so you might need to do some more work if you port to
11 * something ancient like SunOS 4)
13 void (*putty_signal(int sig
, void (*func
)(int)))(int) {
18 if(sigemptyset(&sa
.sa_mask
) < 0)
20 sa
.sa_flags
= SA_RESTART
;
21 if(sigaction(sig
, &sa
, &old
) < 0)
23 return old
.sa_handler
;