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* posix/spawn.h [__USE_GNU]: Define POSIX_SPAWN_USEVFORK. * posix/spawnattr_setflags.c: Check whether any unknown bit is set in FLAGS parameter and fail if this is the case. * sysdeps/posix/spawni.c: Use vfork if POSIX_SPAWN_USEVFORK flag is set.
44 lines
1.4 KiB
C
44 lines
1.4 KiB
C
/* Copyright (C) 2000, 2004 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#include <errno.h>
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#include <spawn.h>
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#include <string.h>
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#define ALL_FLAGS (POSIX_SPAWN_RESETIDS \
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| POSIX_SPAWN_SETPGROUP \
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| POSIX_SPAWN_SETSIGDEF \
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| POSIX_SPAWN_SETSIGMASK \
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| POSIX_SPAWN_SETSCHEDPARAM \
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| POSIX_SPAWN_SETSCHEDULER \
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| POSIX_SPAWN_USEVFORK)
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/* Store flags in the attribute structure. */
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int
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posix_spawnattr_setflags (posix_spawnattr_t *attr, short int flags)
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{
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/* Check no invalid bits are set. */
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if (flags & ~ALL_FLAGS)
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return EINVAL;
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/* Store the flag word. */
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attr->__flags = flags;
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return 0;
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}
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