1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright 2004 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #pragma ident "%Z%%M% %I% %E% SMI" 28 29 /* Copyright (c) 1988 AT&T */ 30 /* All Rights Reserved */ 31 32 33 /* 34 * Unix routine to do an "fopen" on file descriptor 35 * The mode has to be repeated because you can't query its 36 * status 37 */ 38 39 #define _LARGEFILE64_SOURCE 1 40 41 #pragma weak fdopen = _fdopen 42 43 #include <sys/feature_tests.h> 44 45 #define fdopen _fdopen 46 #if !defined(_LP64) 47 #define lseek64 _lseek64 48 #endif 49 50 #include "lint.h" 51 #include <mtlib.h> 52 #include "file64.h" 53 #include <sys/types.h> 54 #include <unistd.h> 55 #include <stdio.h> 56 #include <limits.h> 57 #include <thread.h> 58 #include <synch.h> 59 #include "stdiom.h" 60 #include <errno.h> 61 #include <fcntl.h> 62 63 FILE * 64 fdopen(int fd, const char *type) /* associate file desc. with stream */ 65 { 66 /* iop doesn't need locking since this function is creating it */ 67 FILE *iop; 68 char plus; 69 unsigned char flag; 70 71 72 /* Sets EBADF for bad fds */ 73 if (fcntl(fd, F_GETFD) == -1) 74 return (NULL); 75 76 #ifdef _LP64 77 if ((iop = _findiop()) == 0) { 78 errno = ENOMEM; 79 return (NULL); 80 } 81 iop->_file = fd; 82 #else 83 if (fd > UCHAR_MAX) { 84 errno = EMFILE; 85 return (NULL); 86 } 87 if ((iop = _findiop()) == 0) { 88 errno = ENOMEM; 89 return (NULL); 90 } 91 iop->_file = (unsigned char)fd; 92 #endif /* _LP64 */ 93 94 switch (type[0]) { 95 default: 96 iop->_flag = 0; /* release iop */ 97 errno = EINVAL; 98 return (NULL); 99 case 'r': 100 flag = _IOREAD; 101 break; 102 case 'a': 103 (void) lseek64(fd, (off64_t)0, SEEK_END); 104 /*FALLTHROUGH*/ 105 case 'w': 106 flag = _IOWRT; 107 break; 108 } 109 if ((plus = type[1]) == 'b') /* Unix ignores 'b' ANSI std */ 110 plus = type[2]; 111 if (plus == '+') 112 flag = _IORW; 113 iop->_flag = flag; 114 115 return (iop); 116 } 117