Provided by: manpages-dev_2.77-1_all bug

NAME

       sigpause - atomically release blocked signals and wait for interrupt

SYNOPSIS

       #include <signal.h>

       int sigpause(int sigmask);  /* BSD */

       int sigpause(int sig);      /* System V / Unix95 */

DESCRIPTION

       Don’t use this function.  Use sigsuspend(2) instead.

       The  function  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.

RETURN VALUE

       If sigpause() returns, it was interrupted by a signal  and  the  return
       value is -1 with errno set to EINTR.

CONFORMING TO

       The System V version of sigpause() is standardized in POSIX.1-2001.

NOTES

   History
       The classical BSD version of this function appeared in 4.2BSD.  It sets
       the  process’s  signal  mask  to  sigmask.   Unix95  standardized   the
       incompatible  System V version of this function, which removes only the
       specified signal sig from the process’s signal mask.   The  unfortunate
       situation with two incompatible functions with the same name was solved
       by the sigsuspend(2)  function,  that  takes  a  sigset_t  *  parameter
       (instead of an int).

   Linux Notes
       On  Linux,  this  routine  is a system call only on the Sparc (sparc64)
       architecture.

       Libc4 and libc5 only know about the BSD version.

       Glibc uses the BSD version if the _BSD_SOURCE  feature  test  macro  is
       defined  and  none  of  _POSIX_SOURCE,  _POSIX_C_SOURCE, _XOPEN_SOURCE,
       _GNU_SOURCE, or _SVID_SOURCE is defined.  The System V version is  used
       if _XOPEN_SOURCE is defined.

SEE ALSO

       kill(2),   sigaction(2),  sigprocmask(2),  sigsuspend(2),  sigblock(3),
       sigvec(3), feature_test_macros(7)

COLOPHON

       This page is part of release 2.77 of the Linux  man-pages  project.   A
       description  of  the project, and information about reporting bugs, can
       be found at http://www.kernel.org/doc/man-pages/.