I want to print a number into log or to a terminal using write (or any async-safe function) inside a signal handler. I would prefer not to use buffered I/O. Is there an easy and recommended way to...

Non syscall's wrappers but something like snprintf(), dprintf()

I am just figuring out whether I can call a non-async-safe function in a signal handler. Quotes from Linux man page signal(7): If a signal interrupts the execution of an unsafe function, and han...