sigdelset()

delete signal from signal set 

Function

SYNOPSIS

#include <signal.h>

int sigdelset(sigset_t *set, int signo);

DESCRIPTION

The sigdelset() function manipulates sets of signals. It operates on data objects that the application addresses. It does not operate on any set of signals known to the system (such as the set blocked from delivery to a process or the set pending for a process).

sigdelset() deletes the individual signal specified by the value of signo from the signal set that set points to.

PARAMETERS

set 

Points to a signal set.

signo 

Specifies the value of the individual signal that sigdelset() deletes from the signal set.

RETURN VALUES

If successful, sigdelset() returns zero. On failure, it returns -1 and sets errno to one of the following values:

EFAULT 

set is an invalid pointer.

EINVAL 

The value of signo is an invalid or unsupported signal number.

CONFORMANCE

POSIX.1 (1996).

MULTITHREAD SAFETY LEVEL

Async-signal-safe.

PORTING ISSUES

None.

AVAILABILITY

MKS Toolkit for Professional Developers
MKS Toolkit for Enterprise Developers
MKS Toolkit for Enterprise Developers 64-Bit Edition

SEE ALSO

api_intro

Functions:
pthread_sigmask(), sigaction(), sigaddset(), sigemptyset(), sigfillset(), sigismember(), sigprocmask()

MKS Toolkit 9.3 Documentation Build 6.