posix_spawnattr_setspecialport_np(3) [osx man page]

POSIX_SPAWNATTR_SETSPECIALPORT_NP(3)			   BSD Library Functions Manual 		      POSIX_SPAWNATTR_SETSPECIALPORT_NP(3)

NAME

     posix_spawnattr_setspecialport_np posix_spawnattr_setexceptionports_np -- set special ports on a posix_spawnattr_t

SYNOPSIS

     #include <spawn.h>

     int
     posix_spawnattr_setspecialport_np(posix_spawnattr_t *attr, mach_port_t new_port, int which);

     int
     posix_spawnattr_setexceptionports_np(posix_spawnattr_t *attr, exception_mask_t mask, mach_port_t new_port, exception_behavior_t behavior,
	 thread_state_flavor_t flavor);

IMPORTANT

     These functions represent an Apple extension to posix_spawn(2) and posix_spawnp(2), and as such should not be used by programs intending
     their code to be portable to other platforms.

DESCRIPTION

     The posix_spawnattr_setspecialport_np() function sets a new value for a Mach special port into the value referenced by attr to the port ref-
     erenced by new_port for a port value of which, as if the new process had called task_set_special_port().

     The posix_spawnattr_setexceptionports_np() function sets the Mach port to new_port for a number of exception ports represented by the bit-
     field mask, and sets the new default behavior and default flavor, as if the new process had called task_set_exception_ports().

RETURN VALUES

     On success, these functions return 0; on failure they return an error number from <errno.h>.

ERRORS

     These functions may fail if:

     [EINVAL]		The value specified by attr is invalid.

     [EINVAL]		The value of attr is invalid.

     [ENOMEM]		Insufficient resources exist to set the ports.

SEE ALSO

     posix_spawn(2), posix_spawnp(2), posix_spawnattr_init(3), posix_spawnattr_destroy(3)

STANDARDS

     Nonstandard

HISTORY

     The posix_spawnattr_setspecialport_np() and posix_spawnattr_setexceptionports_np() function calls appeared in Mac OS X.

Mac OS X							  August 22, 2007							  Mac OS X

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