Hi:
I have some old code need to be compiled - which include a system call, the function name is: sigblock like:

.....
int holdnum = sigblock(sigmask(SIGCHLD));
....

but the compiler told me the sigblock cannot be found even I include signal.h. Looks like it is depricated - but I need to know which one is the current call to replace it? our current OS is sunOS 5.10.

Thanks for your help
Sean

This functionality is now provided by sigprocmask, but it's not a direct replacement, there's a whole new API. To block a new signal you'd do:

sigset_t set, old;
sigemptyset(&set);
sigaddset(&set, SIGCHLD);
sigprocmask(SIG_BLOCK, &set, &oldset);