diff options
Diffstat (limited to 'contrib/openbsm/compat/closefrom.h')
-rw-r--r-- | contrib/openbsm/compat/closefrom.h | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/contrib/openbsm/compat/closefrom.h b/contrib/openbsm/compat/closefrom.h new file mode 100644 index 0000000..b0545f3 --- /dev/null +++ b/contrib/openbsm/compat/closefrom.h @@ -0,0 +1,53 @@ +/*- + * Copyright (c) 2012 The FreeBSD Foundation + * All rights reserved. + * + * This software was developed by Pawel Jakub Dawidek under sponsorship from + * the FreeBSD Foundation. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * $P4: //depot/projects/trustedbsd/openbsm/compat/closefrom.h#1 $ + */ + +#ifndef _CLOSEFROM_H_ +#define _CLOSEFROM_H_ + +#include <unistd.h> + +static void +closefrom(int lowfd) +{ + int error, fd, maxfd; + + error = errno; + + maxfd = sysconf(_SC_OPEN_MAX); + if (maxfd < 0) + maxfd = 16384; + for (fd = lowfd; fd <= maxfd; fd++) + (void)close(fd); + + errno = error; +} + +#endif /* !_CLOSEFROM_H_ */ |