---
name: "sys_rt_sigprocmask"
section: "9"
platform: "linux"
package: "linux-manual-3.16"
version: "3.16.56-1+deb8u1"
release: "Debian 8 (Jessie)"
platforms: ["linux"]
url: "https://new.carta.tech/sys_rt_sigprocmask"
---

# sys\_rt\_sigprocmask(9)

change the list of currently blocked signals

## NAME

sys\_rt\_sigprocmask - change the list of currently blocked signals

## SYNOPSIS

**long sys\_rt\_sigprocmask(int** *how***, sigset\_t \_\_user \*** *nset***, sigset\_t \_\_user \*** *oset***, size\_t** *sigsetsize***);**

## ARGUMENTS

*how*

whether to add, remove, or set signals

*nset*

stores pending signals

*oset*

previous value of signal mask if non-null

*sigsetsize*

size of sigset\_t type

## COPYRIGHT