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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

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POSIX_SPAWNATTR_INIT(3) 				   BSD Library Functions Manual 				   POSIX_SPAWNATTR_INIT(3)

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 indi- cate the error. ERRORS
The posix_spawnattr_init() function will fail if: [ENOMEM] Insufficient memory exists to initialize the spawn attributes 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. AUTHORS
Ed Schouten <ed@FreeBSD.org> BSD
March 24, 2008 BSD
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