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 (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 22 /* 23 * Copyright 2008 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 /* Copyright (c) 1988 AT&T */ 28 /* All Rights Reserved */ 29 30 #pragma ident "%Z%%M% %I% %E% SMI" 31 32 /* 33 * Unix routine to do an "fopen" on file descriptor 34 * The mode has to be repeated because you can't query its 35 * status 36 */ 37 38 #define _LARGEFILE64_SOURCE 1 39 40 #pragma weak _fdopen = fdopen 41 42 #include "lint.h" 43 #include <mtlib.h> 44 #include "file64.h" 45 #include <sys/types.h> 46 #include <unistd.h> 47 #include <stdio.h> 48 #include <limits.h> 49 #include <thread.h> 50 #include <synch.h> 51 #include "stdiom.h" 52 #include <errno.h> 53 #include <fcntl.h> 54 55 FILE * 56 fdopen(int fd, const char *type) /* associate file desc. with stream */ 57 { 58 /* iop doesn't need locking since this function is creating it */ 59 FILE *iop; 60 char plus; 61 unsigned char flag; 62 63 /* Sets EBADF for bad fds */ 64 if (fcntl(fd, F_GETFD) == -1) 65 return (NULL); 66 67 if ((iop = _findiop()) == 0) { 68 errno = ENOMEM; 69 return (NULL); 70 } 71 72 switch (type[0]) { 73 default: 74 iop->_flag = 0; /* release iop */ 75 errno = EINVAL; 76 return (NULL); 77 case 'r': 78 flag = _IOREAD; 79 break; 80 case 'a': 81 (void) lseek64(fd, (off64_t)0, SEEK_END); 82 /*FALLTHROUGH*/ 83 case 'w': 84 flag = _IOWRT; 85 break; 86 } 87 if ((plus = type[1]) == 'b') /* Unix ignores 'b' ANSI std */ 88 plus = type[2]; 89 if (plus == '+') 90 flag = _IORW; 91 iop->_flag = flag; 92 93 #ifdef _LP64 94 iop->_file = fd; 95 #else 96 if (fd <= _FILE_FD_MAX) { 97 SET_FILE(iop, fd); 98 } else if (_file_set(iop, fd, type) != 0) { 99 /* errno set by _file_set () */ 100 iop->_flag = 0; /* release iop */ 101 return (NULL); 102 } 103 #endif /* _LP64 */ 104 105 return (iop); 106 } 107