POSIX_SPAWNATTR_GETFLAGS
Section: POSIX Programmer's Manual (3P)
Updated: 2017
Page Index
PROLOG
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.
NAME
posix_spawnattr_getflags,
posix_spawnattr_setflags
--- get and set the spawn-flags attribute of a spawn attributes object
(
ADVANCED REALTIME)
SYNOPSIS
#include <spawn.h>
int posix_spawnattr_getflags(const posix_spawnattr_t *restrict attr,
short *restrict flags);
int posix_spawnattr_setflags(posix_spawnattr_t *attr, short flags);
DESCRIPTION
The
posix_spawnattr_getflags()
function shall obtain the value of the
spawn-flags
attribute from the attributes object referenced by
attr.
The
posix_spawnattr_setflags()
function shall set the
spawn-flags
attribute in an initialized attributes object referenced by
attr.
The
spawn-flags
attribute is used to indicate which process attributes are to be
changed in the new process image when invoking
posix_spawn()
or
posix_spawnp().
It is the bitwise-inclusive OR of zero or more of the following flags:
POSIX_SPAWN_RESETIDS
POSIX_SPAWN_SETPGROUP
POSIX_SPAWN_SETSIGDEF
POSIX_SPAWN_SETSIGMASK
POSIX_SPAWN_SETSCHEDPARAM
POSIX_SPAWN_SETSCHEDULER
These flags are defined in
<spawn.h>.
The default value of this attribute shall be as if no flags were set.
RETURN VALUE
Upon successful completion,
posix_spawnattr_getflags()
shall return zero and store the value of the
spawn-flags
attribute of
attr
into the object referenced by the
flags
parameter; otherwise, an error number shall be returned to indicate the
error.
Upon successful completion,
posix_spawnattr_setflags()
shall return zero; otherwise, an error number shall be returned to
indicate the error.
ERRORS
These functions may fail if:
- EINVAL
-
The value specified by
attr
is invalid.
The
posix_spawnattr_setflags()
function may fail if:
- EINVAL
-
The value of the attribute being set is not valid.
The following sections are informative.
EXAMPLES
None.
APPLICATION USAGE
These functions are part of the Spawn option and need not be
provided on all implementations.
RATIONALE
None.
FUTURE DIRECTIONS
None.
SEE ALSO
posix_spawn(),
posix_spawnattr_destroy(),
posix_spawnattr_getsigdefault(),
posix_spawnattr_getpgroup(),
posix_spawnattr_getschedparam(),
posix_spawnattr_getschedpolicy(),
posix_spawnattr_getsigmask()
The Base Definitions volume of POSIX.1-2017,
<spawn.h>
COPYRIGHT
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 .