POSIX_SPAWN_FILE_ACTIONS_INIT(3) BSD Library Functions Manual POSIX_SPAWN_FILE_ACTIONS_INIT(3)
posix_spawn_file_actions_init posix_spawn_file_actions_destroy -- initialize or destroy spawn file actions objects
The posix_spawn_file_actions_init() function initializes the object referenced by file_actions, to an empty set of file actions for subse-
quent use in a call to posix_spawn(2) or posix_spawnp(2). A posix_spawn_file_actions_t object is an opaque type that is used to collect set
of file actions specified by calls to posix_spawn_file_actions_addclose(3) and posix_spawn_file_actions_addopen(3) such that once the spawn
operation is complete, the child process will have a different set of file descriptors than the parent, in the order that the operations were
added to the posix_spawn_file_actions_t.
Additionally, any descriptor in the parent not modified by a file action, and which has the FD_CLOEXEC flag set, will be closed in the child.
The posix_spawn_file_actions_destroy() function destroys the object referenced by file_actions which was previously intialized by
posix_spawn_file_actions_init(), returning any resources obtained at the time of initialization to the system for subsequent reuse. A
posix_spawn_file_actions_t may be reinitialized after having been destroyed, but must not be reused after destruction, unless it has been
On success, these functions return 0; on failure they return an error number from <errno.h>.
These functions will fail and return an error if:
[ENOMEM] Insufficient resources to initialize the posix_spawn_file_actions_t object.
[EINVAL] The posix_spawn_file_actions_t being destroyed is invalid.
posix_spawn(2), posix_spawnp(2), posix_spawn_file_actions_addclose(3), posix_spawn_file_actions_addopen(3),
Version 3 of the Single UNIX Specification (``SUSv3'') [SPN]
The posix_spawn_file_actions_init() and posix_spawn_file_actions_destroy() function calls appeared in Version 3 of the Single UNIX
Specification (``SUSv3'') [SPN].
Mac OS X August 22, 2007 Mac OS X