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-'\" t
-.\" Copyright (C) 2004 Andries Brouwer (aeb@cwi.nl)
-.\"
-.\" SPDX-License-Identifier: Linux-man-pages-copyleft
-.\"
-.TH sigpause 3 (date) "Linux man-pages (unreleased)"
-.SH NAME
-sigpause \- atomically release blocked signals and wait for interrupt
-.SH LIBRARY
-Standard C library
-.RI ( libc ", " \-lc )
-.SH SYNOPSIS
-.nf
-.B #include <signal.h>
-.PP
-.BI "[[deprecated]] int sigpause(int " sigmask ");  /* BSD (but see NOTES) */"
-.PP
-.BI "[[deprecated]] int sigpause(int " sig ");      /* POSIX.1 / SysV / UNIX 95 */"
-.fi
-.SH DESCRIPTION
-Don't use this function.
-Use
-.BR sigsuspend (2)
-instead.
-.PP
-The function
-.BR sigpause ()
-is designed to wait for some signal.
-It changes the process's signal mask (set of blocked signals),
-and then waits for a signal to arrive.
-Upon arrival of a signal, the original signal mask is restored.
-.SH RETURN VALUE
-If
-.BR sigpause ()
-returns, it was interrupted by a signal and the return value is \-1
-with
-.I errno
-set to
-.BR EINTR .
-.SH ATTRIBUTES
-For an explanation of the terms used in this section, see
-.BR attributes (7).
-.ad l
-.nh
-.TS
-allbox;
-lbx lb lb
-l l l.
-Interface	Attribute	Value
-T{
-.BR sigpause ()
-T}	Thread safety	MT-Safe
-.TE
-.hy
-.ad
-.sp 1
-.\" FIXME: The marking is different from that in the glibc manual,
-.\" marking in glibc manual is more detailed:
-.\"
-.\" sigpause: MT-Unsafe race:sigprocmask/!bsd!linux
-.\"
-.\" glibc manual says /!linux!bsd indicate the preceding marker only applies
-.\" when the underlying kernel is neither Linux nor a BSD kernel.
-.\" So, it is safe in Linux kernel.
-.SH VERSIONS
-On Linux, this routine is a system call only on the Sparc (sparc64)
-architecture.
-.PP
-.\" Libc4 and libc5 know only about the BSD version.
-.\"
-glibc uses the BSD version if the
-.B _BSD_SOURCE
-feature test macro is defined and none of
-.BR _POSIX_SOURCE ,
-.BR _POSIX_C_SOURCE ,
-.BR _XOPEN_SOURCE ,
-.BR _GNU_SOURCE ,
-or
-.B _SVID_SOURCE
-is defined.
-Otherwise, the System V version is used,
-and feature test macros must be defined as follows to obtain the declaration:
-.IP \[bu] 3
-Since glibc 2.26:
-_XOPEN_SOURCE >= 500
-.\" || (_XOPEN_SOURCE && _XOPEN_SOURCE_EXTENDED)
-.IP \[bu]
-glibc 2.25 and earlier: _XOPEN_SOURCE
-.PP
-Since glibc 2.19, only the System V version is exposed by
-.IR <signal.h> ;
-applications that formerly used the BSD
-.BR sigpause ()
-should be amended to use
-.BR sigsuspend (2).
-.\"
-.\" For the BSD version, one usually uses a zero
-.\" .I sigmask
-.\" to indicate that no signals are to be blocked.
-.SH STANDARDS
-POSIX.1-2008.
-.SH HISTORY
-POSIX.1-2001.
-Obsoleted in POSIX.1-2008.
-.PP
-The classical BSD version of this function appeared in 4.2BSD.
-It sets the process's signal mask to
-.IR sigmask .
-UNIX 95 standardized the incompatible System V version of
-this function, which removes only the specified signal
-.I sig
-from the process's signal mask.
-.\" __xpg_sigpause: UNIX 95, spec 1170, SVID, SVr4, XPG
-The unfortunate situation with two incompatible functions with the
-same name was solved by the
-.BR \%sigsuspend (2)
-function, that takes a
-.I "sigset_t\ *"
-argument (instead of an
-.IR int ).
-.SH SEE ALSO
-.BR kill (2),
-.BR sigaction (2),
-.BR sigprocmask (2),
-.BR sigsuspend (2),
-.BR sigblock (3),
-.BR sigvec (3),
-.BR feature_test_macros (7)