mirror of
https://github.com/freebsd/freebsd-src
synced 2024-07-22 18:56:38 +00:00
dc36d6f9bb
Remove ancient SCCS tags from the tree, automated scripting, with two minor fixup to keep things compiling. All the common forms in the tree were removed with a perl script. Sponsored by: Netflix
102 lines
3.2 KiB
C
102 lines
3.2 KiB
C
/*-
|
|
* SPDX-License-Identifier: BSD-3-Clause
|
|
*
|
|
* Copyright (c) 1990, 1993
|
|
* The Regents of the University of California. All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to Berkeley by
|
|
* Chris Torek.
|
|
*
|
|
* 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.
|
|
* 3. Neither the name of the University nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
|
|
*/
|
|
|
|
#include "namespace.h"
|
|
#include <sys/types.h>
|
|
#include <fcntl.h>
|
|
#include <unistd.h>
|
|
#include <stdio.h>
|
|
#include <errno.h>
|
|
#include <limits.h>
|
|
#include "un-namespace.h"
|
|
#include "local.h"
|
|
|
|
FILE *
|
|
fdopen(int fd, const char *mode)
|
|
{
|
|
FILE *fp;
|
|
int flags, oflags, fdflags, tmp;
|
|
|
|
/*
|
|
* File descriptors are a full int, but _file is only a short.
|
|
* If we get a valid file descriptor that is greater than
|
|
* SHRT_MAX, then the fd will get sign-extended into an
|
|
* invalid file descriptor. Handle this case by failing the
|
|
* open.
|
|
*/
|
|
if (fd > SHRT_MAX) {
|
|
errno = EMFILE;
|
|
return (NULL);
|
|
}
|
|
|
|
if ((flags = __sflags(mode, &oflags)) == 0)
|
|
return (NULL);
|
|
|
|
/* Make sure the mode the user wants is a subset of the actual mode. */
|
|
if ((fdflags = _fcntl(fd, F_GETFL, 0)) < 0)
|
|
return (NULL);
|
|
/* Work around incorrect O_ACCMODE. */
|
|
tmp = fdflags & (O_ACCMODE | O_EXEC);
|
|
if (tmp != O_RDWR && (tmp != (oflags & O_ACCMODE))) {
|
|
errno = EINVAL;
|
|
return (NULL);
|
|
}
|
|
|
|
if ((fp = __sfp()) == NULL)
|
|
return (NULL);
|
|
|
|
if ((oflags & O_CLOEXEC) && _fcntl(fd, F_SETFD, FD_CLOEXEC) == -1) {
|
|
fp->_flags = 0;
|
|
return (NULL);
|
|
}
|
|
|
|
fp->_flags = flags;
|
|
/*
|
|
* If opened for appending, but underlying descriptor does not have
|
|
* O_APPEND bit set, assert __SAPP so that __swrite() caller
|
|
* will _sseek() to the end before write.
|
|
*/
|
|
if (fdflags & O_APPEND)
|
|
fp->_flags2 |= __S2OAP;
|
|
else if (oflags & O_APPEND)
|
|
fp->_flags |= __SAPP;
|
|
fp->_file = fd;
|
|
fp->_cookie = fp;
|
|
fp->_read = __sread;
|
|
fp->_write = __swrite;
|
|
fp->_seek = __sseek;
|
|
fp->_close = __sclose;
|
|
return (fp);
|
|
}
|