posix_spawnattr_init(3) BSD Library Functions Manual posix_spawnattr_init(3)
NAME
posix_spawnattr_init posix_spawnattr_destroy -- initialize or destroy a
spawn attributes object
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 the object referenced by
attr, to an empty set of spawn attributes for subsequent use in a call to
posix_spawn(2) or posix_spawnp(2).
A posix_spawnattr_t object is an opaque type that is used to collect set
of spawn attributes specified by calls to posix_spawnattr_setflags(3),
posix_spawnattr_setpgroup(3), posix_spawnattr_setsigdefault(3),
posix_spawnattr_setsigmask(3), posix_spawnattr_setbinpref_np(3),
posix_spawnattr_setspecialport_np(3), or
posix_spawnattr_setexceptionports_np(3) such that once the spawn opera-
tion is complete, the child process will have a different set of
attributes than the parent. The order of these operations is unspecified
and may change; programs should not depend on their ordering.
The posix_spawnattr_destroy() function destroys the object referenced by
attr which was previously intialized by posix_spawnattr_init(), returning
any resources obtained at the time of initialization to the system for
subsequent reuse. A posix_spawnattr_t may be reinitialized after having
been destroyed, but must not be reused after destruction, unless it has
been reinitialized.
RETURN VALUES
On success, these functions return 0; on failure they return an error
number from <errno.h>.
ERRORS
The posix_spawnattr_init() and posix_spawnattr_destroy() functions will
fail and return an error if:
[ENOMEM] Insufficient resources to initialize the
posix_spawnattr_t object.
[EINVAL] The posix_spawnattr_t being destroyed is invalid.
SEE ALSO
posix_spawn(2), posix_spawnp(2), posix_spawnattr_setflags(3),
posix_spawnattr_setpgroup(3), posix_spawnattr_setsigdefault(3),
posix_spawnattr_setsigmask(3), posix_spawnattr_setbinpref_np(3),
posix_spawnattr_setspecialport_np(3),
posix_spawnattr_setexceptionports_np(3)
STANDARDS
Version 3 of the Single UNIX Specification (``SUSv3'') [SPN]
HISTORY
The posix_spawn() and posix_spawnp() function calls appeared in Version 3
of the Single UNIX Specification (``SUSv3'') [SPN].
Mac OS X August 22, 2007 Mac OS X
Mac OS X 10.9.1 - Generated Fri Jan 10 07:51:50 CST 2014