'\" t
.\"     Title: sys_sigprocmask
.\"    Author: [FIXME: author] [see http://docbook.sf.net/el/author]
.\" Generator: DocBook XSL Stylesheets v1.79.1 <http://docbook.sf.net/>
.\"      Date: January 2017
.\"    Manual: Driver Basics
.\"    Source: Kernel Hackers Manual 4.8.15
.\"  Language: English
.\"
.TH "SYS_SIGPROCMASK" "9" "January 2017" "Kernel Hackers Manual 4\&.8\&." "Driver Basics"
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.SH "NAME"
sys_sigprocmask \- examine and change blocked signals
.SH "SYNOPSIS"
.HP \w'long\ sys_sigprocmask('u
.BI "long sys_sigprocmask(int\ " "how" ", old_sigset_t\ __user\ *\ " "nset" ", old_sigset_t\ __user\ *\ " "oset" ");"
.SH "ARGUMENTS"
.PP
\fIhow\fR
.RS 4
whether to add, remove, or set signals
.RE
.PP
\fInset\fR
.RS 4
signals to add or remove (if non\-null)
.RE
.PP
\fIoset\fR
.RS 4
previous value of signal mask if non\-null
.RE
.SH "DESCRIPTION"
.PP
Some platforms have their own version with special arguments; others support only sys_rt_sigprocmask\&.
.SH "COPYRIGHT"
.br