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.
posix_spawnattr_getpgroup, posix_spawnattr_setpgroup — get and set the
spawn-pgroup attribute of a spawn attributes object (ADVANCED REALTIME)
int posix_spawnattr_getpgroup(const posix_spawnattr_t *restrict attr,
pid_t *restrict pgroup);
int posix_spawnattr_setpgroup(posix_spawnattr_t *attr, pid_t pgroup);
The posix_spawnattr_getpgroup() function shall obtain the value of the
spawn-pgroup attribute from the attributes object referenced by
The posix_spawnattr_setpgroup() function shall set the
spawn-pgroup attribute in an initialized attributes object referenced
The spawn-pgroup attribute represents the process group to
be joined by the new process image in a spawn operation (if
POSIX_SPAWN_SETPGROUP is set in the spawn-flags attribute). The
default value of this attribute shall be zero.
Upon successful completion, posix_spawnattr_getpgroup() shall return zero
and store the value of the spawn-pgroup attribute of attr into
the object referenced by the pgroup parameter; otherwise, an error
number shall be returned to indicate the error.
Upon successful completion, posix_spawnattr_setpgroup()
shall return zero; otherwise, an error number shall be returned to indicate
These functions may fail if:
- The value specified by attr is invalid.
The posix_spawnattr_setpgroup() function may fail if:
- The value of the attribute being set is not valid.
The following sections are informative.
These functions are part of the Spawn option and need not be provided on all
The Base Definitions volume of POSIX.1‐2017,
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 .
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