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 /* 24 * Copyright 2006 Sun Microsystems, Inc. All rights reserved. 25 * Use is subject to license terms. 26 */ 27 28 #pragma ident "%Z%%M% %I% %E% SMI" 29 30 /* Copyright (c) 1988 AT&T */ 31 /* All Rights Reserved */ 32 33 34 /* 35 * Unix routine to do an "fopen" on file descriptor 36 * The mode has to be repeated because you can't query its 37 * status 38 */ 39 40 #define _LARGEFILE64_SOURCE 1 41 42 #pragma weak fdopen = _fdopen 43 44 #include "synonyms.h" 45 #include <mtlib.h> 46 #include "file64.h" 47 #include <sys/types.h> 48 #include <unistd.h> 49 #include <stdio.h> 50 #include <limits.h> 51 #include <thread.h> 52 #include <synch.h> 53 #include "stdiom.h" 54 #include <errno.h> 55 #include <fcntl.h> 56 57 FILE * 58 fdopen(int fd, const char *type) /* associate file desc. with stream */ 59 { 60 /* iop doesn't need locking since this function is creating it */ 61 FILE *iop; 62 char plus; 63 unsigned char flag; 64 65 66 /* Sets EBADF for bad fds */ 67 if (fcntl(fd, F_GETFD) == -1) 68 return (NULL); 69 70 #ifdef _LP64 71 if ((iop = _findiop()) == 0) { 72 errno = ENOMEM; 73 return (NULL); 74 } 75 iop->_file = fd; 76 #else 77 if (fd > UCHAR_MAX) { 78 errno = EMFILE; 79 return (NULL); 80 } 81 if ((iop = _findiop()) == 0) { 82 errno = ENOMEM; 83 return (NULL); 84 } 85 iop->_file = (unsigned char)fd; 86 #endif /* _LP64 */ 87 88 switch (type[0]) { 89 default: 90 iop->_flag = 0; /* release iop */ 91 errno = EINVAL; 92 return (NULL); 93 case 'r': 94 flag = _IOREAD; 95 break; 96 case 'a': 97 (void) lseek64(fd, (off64_t)0, SEEK_END); 98 /*FALLTHROUGH*/ 99 case 'w': 100 flag = _IOWRT; 101 break; 102 } 103 if ((plus = type[1]) == 'b') /* Unix ignores 'b' ANSI std */ 104 plus = type[2]; 105 if (plus == '+') 106 flag = _IORW; 107 iop->_flag = flag; 108 109 return (iop); 110 } 111