sigignore() — Set disposition to ignore a signal
Standards
| Standards / Extensions | C or C++ | Dependencies |
|---|---|---|
XPG4.2
Single UNIX Specification, Version 3 |
both | POSIX(ON)
|
Format
#define _XOPEN_SOURCE_EXTENDED 1
#include <signal.h>
int sigignore(int sig);General description
The sigignore() function provides a simplified method for setting the signal action of the signal specified by the argument sig to SIG_IGN.
Usage note
The use of the SIGTHSTOP and SIGTHCONT signal
is not supported with this function.
Returned value
If successful, sigignore() returns 0.
If unsuccessful, sigignore() returns -1 and sets
errno to one of the following values:
- Error Code
- Description
- EINVAL
- The value of the argument sig is not a valid signal type or it is SIGKILL, SIGSTOP, or SIGTRACE.