NAME
posix_spawnattr_init,
posix_spawnattr_destroy —
initialize
and destroy spawn attributes object
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
#include <spawn.h>
int
posix_spawnattr_init(
posix_spawnattr_t
* attr);
int
posix_spawnattr_destroy(
posix_spawnattr_t
* attr);
DESCRIPTION
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. Initializing an already
initialized spawn attributes object may cause memory to be leaked.
The
posix_spawnattr_destroy() function destroys a spawn
attributes object. A destroyed
attr attributes object
can be reinitialized using
posix_spawnattr_init(). The
object should not be used after it has been destroyed.
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.
The resulting spawn attributes object (possibly modified by setting individual
attribute values), is used to modify the behavior of
posix_spawn() or
posix_spawnp(). After a
spawn attributes object has been used to spawn a process by a call to a
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_init() and
posix_spawnattr_destroy() return zero; 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 file
actions object.
SEE ALSO
posix_spawn(3),
posix_spawnp(3)
STANDARDS
The
posix_spawnattr_init() and
posix_spawnattr_destroy() functions conform to
IEEE Std 1003.1-2001 (“POSIX.1”).
HISTORY
The
posix_spawnattr_init() and
posix_spawnattr_destroy() functions first appeared in
FreeBSD 8.0 and imported for
NetBSD
6.0.
AUTHORS
Ed Schouten
<
ed@FreeBSD.org>