This manual page is part of the POSIX Programmer's Manual. The Linux implementation of this interface

       These functions are part of the Spawn option and need not be provided on all implementations.

       Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1-2017, Standard
       for  Information  Technology  --  Portable  Operating  System  Interface  (POSIX),  The  Open  Group Base
       Specifications Issue 7, 2018 Edition, Copyright (C) 2018 by the Institute of Electrical  and  Electronics
       Engineers, Inc and The Open Group.  In the event of any discrepancy between this version and the original
       IEEE  and The Open Group Standard, the original IEEE and The Open Group Standard is the referee document.
       The original Standard can be obtained online at http://www.opengroup.org/unix/online.html .

       Any typographical or formatting errors that appear in this page are most likely to have  been  introduced
       during   the   conversion  of  the  source  files  to  man  page  format.  To  report  such  errors,  see
       https://www.kernel.org/doc/man-pages/reporting_bugs.html .

IEEE/The Open Group                                   2017                    POSIX_SPAWNATTR_GETSIGMASK(3POSIX)

       The posix_spawnattr_getsigmask() function shall obtain the value of the spawn-sigmask attribute from  the
       attributes object referenced by attr.

       The  posix_spawnattr_setsigmask()  function  shall  set  the  spawn-sigmask  attribute  in an initialized
       attributes object referenced by attr.

       The spawn-sigmask attribute represents the signal mask in effect in the new  process  image  of  a  spawn
       operation  (if  POSIX_SPAWN_SETSIGMASK  is  set  in the spawn-flags attribute). The default value of this
       attribute is unspecified.

       These functions may fail if:

       EINVAL The value specified by attr is invalid.

       The posix_spawnattr_setsigmask() function may fail if:

       EINVAL The value of the attribute being set is not valid.

       Thefollowingsectionsareinformative.

       None.

       None.

       posix_spawnattr_getsigmask,  posix_spawnattr_setsigmask  —  get  and set the spawn-sigmask attribute of a
       spawn attributes object (ADVANCEDREALTIME)

       This  manual  page  is part of the POSIX Programmer's Manual.  The Linux implementation of this interface
       may differ (consult the corresponding Linux manual page for details of Linux behavior), or the  interface
       may not be implemented on Linux.

       None.

       Upon successful completion, posix_spawnattr_getsigmask() shall return zero and store  the  value  of  the
       spawn-sigmask  attribute of attr into the object referenced by the sigmask parameter; otherwise, an error
       number shall be returned to indicate the error.

       Upon successful completion, posix_spawnattr_setsigmask() shall return zero; otherwise,  an  error  number
       shall be returned to indicate the error.

posix_spawn(), posix_spawnattr_destroy(), posix_spawnattr_getsigdefault(), posix_spawnattr_getflags(),
       posix_spawnattr_getpgroup(), posix_spawnattr_getschedparam(), posix_spawnattr_getschedpolicy()

       The Base Definitions volume of POSIX.1‐2017, <signal.h>, <spawn.h>

       #include <signal.h>
       #include <spawn.h>

       int posix_spawnattr_getsigmask(const posix_spawnattr_t *restrict attr,
           sigset_t *restrict sigmask);
       int posix_spawnattr_setsigmask(posix_spawnattr_t *restrict attr,
           const sigset_t *restrict sigmask);