Mercurial > hg > octave-kai > gnulib-hg
changeset 10508:9c7d7a02cc53
New module 'posix_spawn_file_actions_adddup2'.
author | Bruno Haible <bruno@clisp.org> |
---|---|
date | Sun, 28 Sep 2008 13:46:16 +0200 |
parents | e0e84ec52436 |
children | 4b837b5f2c9a |
files | ChangeLog doc/posix-functions/posix_spawn_file_actions_adddup2.texi lib/spawn_faction_adddup2.c modules/posix_spawn_file_actions_adddup2 |
diffstat | 4 files changed, 108 insertions(+), 5 deletions(-) [+] |
line wrap: on
line diff
--- a/ChangeLog +++ b/ChangeLog @@ -1,5 +1,12 @@ 2008-09-28 Bruno Haible <bruno@clisp.org> + New module 'posix_spawn_file_actions_adddup2'. + * modules/posix_spawn_file_actions_adddup2: New file. + * lib/spawn_faction_adddup2.c: New file, from GNU libc with + modifications. + * doc/posix-functions/posix_spawn_file_actions_adddup2.texi: Mention + the new module. + New module 'posix_spawn_file_actions_addclose'. * modules/posix_spawn_file_actions_addclose: New file. * lib/spawn_faction_addclose.c: New file, from GNU libc with
--- a/doc/posix-functions/posix_spawn_file_actions_adddup2.texi +++ b/doc/posix-functions/posix_spawn_file_actions_adddup2.texi @@ -4,15 +4,15 @@ POSIX specification: @url{http://www.opengroup.org/susv3xsh/posix_spawn_file_actions_adddup2.html} -Gnulib module: --- +Gnulib module: posix_spawn_file_actions_adddup2 Portability problems fixed by Gnulib: @itemize -@end itemize - -Portability problems not fixed by Gnulib: -@itemize @item This function is missing on some platforms: MacOS X 10.3, FreeBSD 6.0, NetBSD 3.0, OpenBSD 3.8, AIX 5.1, HP-UX 11, IRIX 6.5, OSF/1 5.1, Solaris 9, Cygwin, mingw, Interix 3.5, BeOS. @end itemize + +Portability problems not fixed by Gnulib: +@itemize +@end itemize
new file mode 100644 --- /dev/null +++ b/lib/spawn_faction_adddup2.c @@ -0,0 +1,65 @@ +/* Copyright (C) 2000 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see <http://www.gnu.org/licenses/>. */ + +#include <config.h> + +/* Specification. */ +#include <spawn.h> + +#include <errno.h> +#include <unistd.h> + +#if !_LIBC +# if (defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__ +# include <stdio.h> +# define __sysconf(open_max) _getmaxstdio () +# else +# define __sysconf(open_max) getdtablesize () +# endif +#endif + +#include "spawn_int.h" + +/* Add an action to FILE-ACTIONS which tells the implementation to call + `dup2' for the given file descriptors during the `spawn' call. */ +int +posix_spawn_file_actions_adddup2 (posix_spawn_file_actions_t *file_actions, + int fd, int newfd) +{ + int maxfd = __sysconf (_SC_OPEN_MAX); + struct __spawn_action *rec; + + /* Test for the validity of the file descriptor. */ + if (fd < 0 || newfd < 0 || fd >= maxfd || newfd >= maxfd) + return EBADF; + + /* Allocate more memory if needed. */ + if (file_actions->_used == file_actions->_allocated + && __posix_spawn_file_actions_realloc (file_actions) != 0) + /* This can only mean we ran out of memory. */ + return ENOMEM; + + /* Add the new value. */ + rec = &file_actions->_actions[file_actions->_used]; + rec->tag = spawn_do_dup2; + rec->action.dup2_action.fd = fd; + rec->action.dup2_action.newfd = newfd; + + /* Account for the new entry. */ + ++file_actions->_used; + + return 0; +}
new file mode 100644 --- /dev/null +++ b/modules/posix_spawn_file_actions_adddup2 @@ -0,0 +1,31 @@ +Description: +posix_spawn_file_actions_adddup2() function: augment a child process actions +specification. + +Files: +lib/spawn_faction_adddup2.c +lib/spawn_int.h +m4/posix_spawn.m4 + +Depends-on: +spawn + +configure.ac: +gl_POSIX_SPAWN +if test $HAVE_POSIX_SPAWN = 0 || test $REPLACE_POSIX_SPAWN = 1; then + gl_REPLACE_SPAWN_H + AC_LIBOBJ([spawn_faction_adddup2]) +fi +gl_SPAWN_MODULE_INDICATOR([posix_spawn_file_actions_adddup2]) + +Makefile.am: + +Include: +<spawn.h> + +License: +LGPL + +Maintainer: +Bruno Haible, glibc +