diff options
Diffstat (limited to 'usr/src/lib/libbc/libc/stdio/common/fdopen.c')
-rw-r--r-- | usr/src/lib/libbc/libc/stdio/common/fdopen.c | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/usr/src/lib/libbc/libc/stdio/common/fdopen.c b/usr/src/lib/libbc/libc/stdio/common/fdopen.c new file mode 100644 index 0000000000..a225c02b45 --- /dev/null +++ b/usr/src/lib/libbc/libc/stdio/common/fdopen.c @@ -0,0 +1,89 @@ +/* + * CDDL HEADER START + * + * The contents of this file are subject to the terms of the + * Common Development and Distribution License, Version 1.0 only + * (the "License"). You may not use this file except in compliance + * with the License. + * + * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE + * or http://www.opensolaris.org/os/licensing. + * See the License for the specific language governing permissions + * and limitations under the License. + * + * When distributing Covered Code, include this CDDL HEADER in each + * file and include the License file at usr/src/OPENSOLARIS.LICENSE. + * If applicable, add the following below this CDDL HEADER, with the + * fields enclosed by brackets "[]" replaced with your own identifying + * information: Portions Copyright [yyyy] [name of copyright owner] + * + * CDDL HEADER END + */ +/* + * Copyright 1989 Sun Microsystems, Inc. All rights reserved. + * Use is subject to license terms. + */ + +/* Copyright (c) 1984 AT&T */ +/* All Rights Reserved */ + +#pragma ident "%Z%%M% %I% %E% SMI" /* from S5R2 1.4 */ + +/*LINTLIBRARY*/ +/* + * Unix routine to do an "fopen" on file descriptor + * The mode has to be repeated because you can't query its + * status + */ + +#include <stdio.h> +#include <sys/errno.h> + +extern int errno; +extern long lseek(); +extern FILE *_findiop(); + +FILE * +fdopen(fd, mode) +int fd; +register char *mode; +{ + static int nofile = -1; + register FILE *iop; + + if(nofile < 0) + nofile = getdtablesize(); + + if(fd < 0 || fd >= nofile) { + errno = EINVAL; + return(NULL); + } + + if((iop = _findiop()) == NULL) + return(NULL); + + iop->_cnt = 0; + iop->_file = fd; + iop->_base = iop->_ptr = NULL; + iop->_bufsiz = 0; + switch(*mode) { + + case 'r': + iop->_flag = _IOREAD; + break; + case 'a': + (void) lseek(fd, 0L, 2); + /* No break */ + case 'w': + iop->_flag = _IOWRT; + break; + default: + errno = EINVAL; + return(NULL); + } + + if(mode[1] == '+') + iop->_flag = _IORW; + + return(iop); +} |