posix_spawnattr_init(3) [osx man page]

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
     operation is complete, the child process will have a different set of attributes than the parent.	The order of these operations is unspeci-
     fied 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

posix_spawnattr_destroy(3C)				   Standard C Library Functions 			       posix_spawnattr_destroy(3C)

NAME

       posix_spawnattr_destroy, posix_spawnattr_init - destroy and initialize spawn attributes object

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 1003.1-200x 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.

RETURN VALUES

       Upon  successful completion, posix_spawnattr_destroy() and posix_spawnattr_init() return 0. Otherwise, an error number is returned to indi-
       cate 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.

ATTRIBUTES

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

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |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_getsched-
       policy(3C), posix_spawnattr_getsigdefault(3C), posix_spawnattr_getsigmask(3C), attributes(5), standards(5)

SunOS 5.11							    30 Jan 2004 				       posix_spawnattr_destroy(3C)