`posix_spawnattr_getflags.3p` ( 3 )

атрибут flags объекта атрибутов порождения (РАСШИРЕННОЕ РЕАЛЬНОЕ ВРЕМЯ) (flags attribute of a spawn attributes object (ADVANCED REALTIME))

Формат

Пролог (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.

Имя (Name)

posix_spawnattr_getflags, posix_spawnattr_setflags — get and set the spawn-flags attribute of a spawn attributes object (ADVANCED REALTIME)

Синопсис (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);

Описание (Description)

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

The posix_spawnattr_setflags() function shall set 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() or posix_spawnp(). 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

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

Возвращаемое значение (Return value)

Upon successful completion, posix_spawnattr_getflags() shall return zero and store the value of the spawn-flags attribute of attr into the object referenced by the flags parameter; otherwise, an error number shall be returned to indicate the error.

Upon successful completion, posix_spawnattr_setflags() shall return zero; otherwise, an error number shall be returned to indicate the error.

Ошибки (Error)

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.

The following sections are informative.

Примеры (Examples)

None.

Использование в приложениях (Application usage)

These functions are part of the Spawn option and need not be provided on all implementations.

Обоснование (Rationale)

None.

Будущие направления (Future directions)