POSIX_SPAWNATTR_GETFLAGS(3C) Standard C Library Functions

NAME

posix_spawnattr_getflags, posix_spawnattr_setflags - get and set spawn-
flags attribute of spawn attributes object

LIBRARY

Standard C Library (libc, -lc)

SYNOPSIS

#include <spawn.h>

int
posix_spawnattr_getflags(const posix_spawnattr_t *restrict attr,
short *restrict flags);

int
posix_spawnattr_setflags(posix_spawnattr_t *attr, short flags);

DESCRIPTION

The posix_spawnattr_getflags() function obtains the value of the spawn-
flags attribute from the attributes object referenced by attr.

The posix_spawnattr_setflags() function sets the spawn-flags attribute
in an initialized attributes object referenced by attr.

The spawn-flags attribute is used to indicate which process attributes
are to be changed in the new process image when invoking
posix_spawn(3C) or posix_spawnp(3C). It is the bitwise inclusive-OR of
zero or more of the following flags:
POSIX_SPAWN_RESETIDS
POSIX_SPAWN_SETPGROUP
POSIX_SPAWN_SETSIGDEF
POSIX_SPAWN_SETSIGMASK
POSIX_SPAWN_SETSCHEDPARAM
POSIX_SPAWN_SETSCHEDULER
POSIX_SPAWN_SETSID
POSIX_SPAWN_NOSIGCHLD_NP
POSIX_SPAWN_WAITPID_NP
POSIX_SPAWN_NOEXECERR_NP

These flags are defined in <spawn.h>. The default value of this
attribute is as if no flags were set.

RETURN VALUES

Upon successful completion, posix_spawnattr_getflags() returns 0 and
stores the value of the spawn-flags attribute of attr into the object
referenced by the flags parameter. Otherwise, an error number is
returned to indicate the error.

Upon successful completion, posix_spawnattr_setflags() returns 0.
Otherwise, an error number is returned to indicate the error.

ERRORS

These functions may fail if:

EINVAL The value specified by attr is invalid.

The posix_spawnattr_setflags() function may fail if:

EINVAL The value of the attribute being set is not valid.

INTERFACE STABILITY

Committed

MT-LEVEL
MT-Safe

SEE ALSO

posix_spawn(3C), posix_spawnattr_destroy(3C),
posix_spawnattr_getpgroup(3C), posix_spawnattr_getschedparam(3C),
posix_spawnattr_getschedpolicy(3C), posix_spawnattr_getsigdefault(3C),
posix_spawnattr_getsigmask(3C), attributes(7), standards(7)

STANDARDS

The posix_spawnattr_getflags() and posix_spawnattr_setflags() functions
conform to IEEE Std 1003.1-2001 ("POSIX.1").

illumos July 4, 2026 illumos