iOS Manual Pages

This document is a Mac OS X manual page. Manual pages are a command-line technology for providing documentation. You can view these manual pages locally using the man(1) command. These manual pages come from many different sources, and thus, have a variety of writing styles.

For more information about the manual page format, see the manual page for manpages(5).

POSIX_SPAWNATTR_SETSP... BSD Library Functions Manual POSIX_SPAWNATTR_SETSP...

NAME
     posix_spawnattr_setspecialport_np posix_spawnattr_setexceptionports_np --set -set
     set or get the spawn-binpref attribute 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 refer-enced referenced
     enced 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 bitfield
     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