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Sun Microsystems, Inc. gratefully acknowledges The Open Group for permission to reproduce portions of its copyrighted documentation. Original documentation from The Open Group can be obtained online at
http://www.opengroup.org/bookstore/.
The Institute of Electrical and Electronics Engineers and The Open Group, have given us permission to reprint portions of their documentation. In the following statement, the phrase "this text" refers to portions of the system documentation. Portions of this text are reprinted and reproduced in electronic form in the Sun OS Reference Manual, from IEEE Std 1003.1, 2004 Edition, Standard for Information Technology -- Portable Operating System Interface (POSIX), The Open Group Base Specifications Issue 6, Copyright (C) 2001-2004 by the Institute of Electrical and Electronics Engineers, Inc and The Open Group. In the event of any discrepancy between these versions 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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posix_spawnattr_destroy, posix_spawnattr_init - destroy and initialize spawn attributes object

#include <spawn.h>

int posix_spawnattr_destroy(posix_spawnattr_t *attr);

int posix_spawnattr_init(posix_spawnattr_t *attr);

The posix_spawnattr_destroy() function destroys a spawn attributes object. A destroyed attr attributes object can be reinitialized using posix_spawnattr_init(). The results of otherwise referencing the object after it has been destroyed are undefined. An implementation can cause posix_spawnattr_destroy() to set the object referenced by attr to an invalid value.

The posix_spawnattr_init() function initializes a spawn attributes object attr with the default value for all of the individual attributes used by the implementation. Results are undefined if posix_spawnattr_init() is called specifying an already initialized attr attributes object.

A spawn attributes object is of type posix_spawnattr_t (defined in <spawn.h>) and is used to specify the inheritance of process attributes across a spawn operation.

No attributes other than those defined by IEEE Std 1003.1-200x are provided.

The resulting spawn attributes object (possibly modified by setting individual attribute values), is used to modify the behavior of posix_spawn(3C) or posix_spawnp(3C). After a spawn attributes object has been used to spawn a process by a call to posix_spawn() or posix_spawnp(), any function affecting the attributes object (including destruction) will not affect any process that has been spawned in this way.

Upon successful completion, posix_spawnattr_destroy() and posix_spawnattr_init() return 0. Otherwise, an error number is returned to indicate the error.

The posix_spawnattr_init() function will fail if: ENOMEM

The posix_spawnattr_destroy() function may fail if: EINVAL

See attributes(5) for descriptions of the following attributes:

ATTRIBUTE TYPE ATTRIBUTE VALUE

Interface Stability Standard

MT-Level MT-Safe

posix_spawn(3C), posix_spawnattr_getflags(3C), posix_spawnattr_getpgroup(3C), posix_spawnattr_getschedparam(3C), posix_spawnattr_getschedpolicy(3C), posix_spawnattr_getsigdefault(3C), posix_spawnattr_getsigmask(3C), attributes(5), standards(5)