siginterrupt - change behavior of system calls in response to interrupts

Syntax

#include <signal.h> int siginterrupt(int sig, int flag);

Description siginterrupt () is used to modify the restart behavior of system calls if the system call

	was interrupted by the specified signal. the function has the same effect as the following implementation: siginterrupt(int sig, int flag) { int ret; struct sigaction act; (void) sigaction(sig, NULL, &act); if (flag) act.sa_flags &=~SA_RESTART; else act.sa_fags |= SA_RESTART; ret=sigaction(sig, &act, NULL); return ret; }
Return val.	0 -1	if successful. if an error occurs. errno is set to indicate the error..
Errors	siginterrupt() will fail if: EINVAL      The sig argument specifies an invalid signal number.
Notes	siginterrupt() supports programs which use “historical“ system interfaces. When a new portable application is written or an existing one rewritten, it should use the sigaction() function with the SA_RESTART flag instead of siginterrupt().
See also	sigaction(), signal.h.