siginterrupt(3C) Standard C Library Functions siginterrupt(3C)NAMEsiginterrupt - allow signals to interrupt functions
SYNOPSIS
#include <signal.h>
int siginterrupt(int sig, int flag);
DESCRIPTION
The siginterrupt() function changes the restart behavior when a func‐
tion is interrupted by the specified signal. The function siginter‐
rupt(sig, flag) has an effect as if implemented as:
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_flags |= SA_RESTART;
ret = sigaction(sig, &act, NULL);
return ret;
}
RETURN VALUES
Upon successful completion, siginterrupt() returns 0. Otherwise, −1 is
returned and errno is set to indicate the error.
ERRORS
The siginterrupt() function will fail if:
EINVAL The sig argument is not a valid signal number.
USAGE
The siginterrupt() function supports programs written to historical
system interfaces. A standard-conforming application, when being writ‐
ten or rewritten, should use sigaction(2) with the SA_RESTART flag
instead of siginterrupt().
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
┌─────────────────────────────┬─────────────────────────────┐
│ ATTRIBUTE TYPE │ ATTRIBUTE VALUE │
├─────────────────────────────┼─────────────────────────────┤
│Interface Stability │Standard │
├─────────────────────────────┼─────────────────────────────┤
│MT-Level │MT-Safe │
└─────────────────────────────┴─────────────────────────────┘
SEE ALSOsigaction(2), signal.h(3HEAD), attributes(5), standards(5)SunOS 5.10 1 Sep 2003 siginterrupt(3C)
