70 lines
1.9 KiB
C
70 lines
1.9 KiB
C
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/* @(#)vfork.h 1.4 09/11/15 Copyright 2009 J. Schilling */
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/*
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* Vfork abstraction
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*
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* Copyright (c) 2009 J. Schilling
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*/
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/*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License, Version 1.0 only
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* (the "License"). You may not use this file except in compliance
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* with the License.
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*
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* See the file CDDL.Schily.txt in this distribution for details.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file CDDL.Schily.txt from this distribution.
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*/
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#ifndef _SCHILY_VFORK_H
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#define _SCHILY_VFORK_H
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#ifndef _SCHILY_MCONFIG_H
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#include <schily/mconfig.h>
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#endif
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#ifndef _SCHILY_UNISTD_H
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#include <schily/unistd.h> /* vfork() definitions are here on Solaris */
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#endif
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#ifdef HAVE_VFORK_H
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#ifndef _INCL_VFORK_H
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#define _INCL_VFORK_H
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#include <vfork.h>
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#endif
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#endif
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#ifdef HAVE_SYS_FORK_H
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#ifndef _INCL_SYS_FORK_H
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#define _INCL_SYS_FORK_H
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#include <sys/fork.h>
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#endif
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#endif
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#ifdef VMS
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#ifndef VMS_VFORK_OK
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/*
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* vfork() on VMS implements strange deviations from the expected behavior.
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* The child does not run correctly unless it calls exec*().
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* The file descriptors are not separated from the parent.
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*
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* decc$set_child_standard_streams() allows to work around the most important
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* problem of having no separate space for file descriptors if the code is
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* prepared for the deviations.
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*
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* As VMS silently overwrites the "vfork" #definition from mconfig.h in
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* unistd.h, we need to reset to the definition in mconfig.h for all programs
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* that are not prepared for the deviations.
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*/
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#ifndef HAVE_VFORK /* Paranoia in case VMS implements a working vfork() */
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#undef vfork
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#define vfork fork
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#endif /* HAVE_VFORK */
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#else /* VMS_VFORK_OK */
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#define set_child_standard_fds(in, out, err) \
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decc$set_child_standard_streams((in), (out), (err))
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#endif /* VMS_VFORK_OK */
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#endif /* VMS */
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#endif /* _SCHILY_VFORK_H */
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