POSIX_SPAWNATTR_DESTROY(3C) Standard C Library Functions

NAME

posix_spawnattr_destroy, posix_spawnattr_init - destroy and initialize
spawn attributes object

LIBRARY

Standard C Library (libc, -lc)

SYNOPSIS

#include <spawn.h>

int
posix_spawnattr_destroy(posix_spawnattr_t *attr);

int
posix_spawnattr_init(posix_spawnattr_t *attr);

DESCRIPTION

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 1003.1-2001
("POSIX.1") 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.

RETURN VALUES

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

ERRORS

The posix_spawnattr_init() function will fail if:

ENOMEM Insufficient memory exists to initialize the spawn
attributes object.

The posix_spawnattr_destroy() function may fail if:

EINVAL The value specified by attr is invalid.

INTERFACE STABILITY

Standard

MT-LEVEL
MT-Safe

SEE ALSO

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(7), standards(7)

STANDARDS

The posix_spawnattr_destroy() and posix_spawnattr_init() functions
conform to IEEE Std 1003.1-2001 ("POSIX.1").

illumos July 4, 2026 illumos