PROLOG

       This  manual  page  is part of the POSIX Programmer's Manual.  The Linux implementation of this interface
       may differ (consult the corresponding Linux manual page for details of Linux behavior), or the  interface
       may not be implemented on Linux.

NAME

       spawn.h — spawn (ADVANCED REALTIME)

SYNOPSIS

       #include <spawn.h>

DESCRIPTION

       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
       POSIX_SPAWN_SETSCHEDPARAM
       POSIX_SPAWN_SETSCHEDULER
       POSIX_SPAWN_SETSIGDEF
       POSIX_SPAWN_SETSIGMASK

       The 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 *,
                     const posix_spawnattr_t *restrict, char *const [restrict],
                     char *const [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_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);
           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);
           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 *,
                     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.

       The following sections are informative.

APPLICATION USAGE

       None.

RATIONALE

       None.

FUTURE DIRECTIONS

       None.

SEE ALSO

       <sched.h>, <semaphore.h>, <signal.h>, <sys_types.h>

       The System Interfaces volume of POSIX.1‐2017, 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()

COPYRIGHT

       Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1-2017, Standard
       for Information  Technology  --  Portable  Operating  System  Interface  (POSIX),  The  Open  Group  Base
       Specifications  Issue  7, 2018 Edition, Copyright (C) 2018 by the Institute of Electrical and Electronics
       Engineers, Inc and The Open Group.  In the event of any discrepancy between this version and the original
       IEEE  and The Open Group Standard, the original IEEE and The Open Group Standard is the referee document.
       The original Standard can be obtained online at http://www.opengroup.org/unix/online.html .

       Any typographical or formatting errors that appear in this page are most likely to have  been  introduced
       during   the   conversion  of  the  source  files  to  man  page  format.  To  report  such  errors,  see
       https://www.kernel.org/doc/man-pages/reporting_bugs.html .