spawn.h — spawn (ADVANCED REALTIME)
[SPN] #include <spawn.h>
The <spawn.h> header shall define the posix_spawnattr_t and posix_spawn_file_actions_t types used in performing spawn operations.
The <spawn.h> header shall define the mode_t and pid_t types as described in <sys/types.h>.
The <spawn.h> header shall define the sigset_t type as described in <signal.h>.
The tag sched_param shall be declared as naming an incomplete structure type, the contents of which are described in the <sched.h> header.
The <spawn.h> header shall define the following symbolic constants for use as the flags that may be set in a posix_spawnattr_t object using the posix_spawnattr_setflags() function:
POSIX_SPAWN_RESETIDS
POSIX_SPAWN_SETPGROUP
[PS]
POSIX_SPAWN_SETSCHEDPARAM
POSIX_SPAWN_SETSCHEDULER
POSIX_SPAWN_SETSID
POSIX_SPAWN_SETSIGDEF
POSIX_SPAWN_SETSIGMASKThe following shall be declared as functions and may also be defined as macros. Function prototypes shall be provided.
int posix_spawn(pid_t *restrict, const char *restrict, const posix_spawn_file_actions_t *restrict, const posix_spawnattr_t *restrict, char *const [restrict], char *const [restrict]); int posix_spawn_file_actions_addchdir(posix_spawn_file_actions_t *restrict, const char *restrict); int posix_spawn_file_actions_addclose(posix_spawn_file_actions_t *, int); int posix_spawn_file_actions_adddup2(posix_spawn_file_actions_t *, int, int); int posix_spawn_file_actions_addfchdir(posix_spawn_file_actions_t *, int); int posix_spawn_file_actions_addopen(posix_spawn_file_actions_t *restrict, int, const char *restrict, int, mode_t); int posix_spawn_file_actions_destroy(posix_spawn_file_actions_t *); int posix_spawn_file_actions_init(posix_spawn_file_actions_t *); int posix_spawnattr_destroy(posix_spawnattr_t *); int posix_spawnattr_getflags(const posix_spawnattr_t *restrict, short *restrict); int posix_spawnattr_getpgroup(const posix_spawnattr_t *restrict, pid_t *restrict); [PS] int posix_spawnattr_getschedparam(const posix_spawnattr_t *restrict, struct sched_param *restrict); int posix_spawnattr_getschedpolicy(const posix_spawnattr_t *restrict, int *restrict); int posix_spawnattr_getsigdefault(const posix_spawnattr_t *restrict, sigset_t *restrict); int posix_spawnattr_getsigmask(const posix_spawnattr_t *restrict, sigset_t *restrict); int posix_spawnattr_init(posix_spawnattr_t *); int posix_spawnattr_setflags(posix_spawnattr_t *, short); int posix_spawnattr_setpgroup(posix_spawnattr_t *, pid_t);
[PS] int posix_spawnattr_setschedparam(posix_spawnattr_t *restrict, const struct sched_param *restrict); int posix_spawnattr_setschedpolicy(posix_spawnattr_t *, int); int posix_spawnattr_setsigdefault(posix_spawnattr_t *restrict, const sigset_t *restrict); int posix_spawnattr_setsigmask(posix_spawnattr_t *restrict, const sigset_t *restrict); int posix_spawnp(pid_t *restrict, const char *restrict, const posix_spawn_file_actions_t *restrict, const posix_spawnattr_t *restrict, char *const [restrict], char *const [restrict]);Inclusion of the <spawn.h> header may make visible symbols defined in the <sched.h> and <signal.h> headers.
None.
None.
None.
<sched.h> , <semaphore.h> , <signal.h> , <sys/types.h>
XSH posix_spawn , posix_spawn_file_actions_addclose , posix_spawn_file_actions_adddup2 , posix_spawn_file_actions_destroy , posix_spawnattr_destroy , posix_spawnattr_getflags , posix_spawnattr_getpgroup , posix_spawnattr_getschedparam , posix_spawnattr_getschedpolicy , posix_spawnattr_getsigdefault , posix_spawnattr_getsigmask
First released in Issue 6. Included for alignment with IEEE Std 1003.1d-1999.
The restrict keyword is added to the prototypes for posix_spawn(), posix_spawn_file_actions_addopen(), posix_spawnattr_getsigdefault(), posix_spawnattr_getflags(), posix_spawnattr_getpgroup(), posix_spawnattr_getschedparam(), posix_spawnattr_getschedpolicy(), posix_spawnattr_getsigmask(), posix_spawnattr_setsigdefault(), posix_spawnattr_setschedparam(), posix_spawnattr_setsigmask(), and posix_spawnp().
This reference page is clarified with respect to macros and symbolic constants, and declarations for the mode_t, pid_t, and sigset_t types are added.
Austin Group Defect 1044 is applied, adding POSIX_SPAWN_SETSID.
Austin Group Defect 1208 is applied, adding posix_spawn_file_actions_addchdir() and posix_spawn_file_actions_addfchdir().
Austin Group Defect 1328 is applied, adding the restrict keyword to the third parameter of posix_spawn() and posix_spawnp().
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