POSIX_SPAWNATTR_GETSIGMASK(3C) Standard C Library Functions

NAME

posix_spawnattr_getsigmask, posix_spawnattr_setsigmask - get and set
spawn-sigmask attribute of spawn attributes object

LIBRARY

Standard C Library (libc, -lc)

SYNOPSIS

#include <signal.h>
#include <spawn.h>

int
posix_spawnattr_getsigmask(const posix_spawnattr_t *restrict attr,
sigset_t *restrict sigmask);

int
posix_spawnattr_setsigmask(posix_spawnattr_t *restrict attr,
const sigset_t *restrict sigmask);

DESCRIPTION

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

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

The spawn-sigmask attribute represents the signal mask in effect in the
new process image of a spawn operation (if POSIX_SPAWN_SETSIGMASK is
set in the spawn-flags attribute). The default value of this attribute
is unspecified.

RETURN VALUES

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

Upon successful completion, posix_spawnattr_setsigmask() 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_setsigmask() function may fail if:

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

INTERFACE STABILITY

Standard

MT-LEVEL
MT-Safe

SEE ALSO

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

STANDARDS

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

illumos July 4, 2026 illumos