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 * This routine is a special case, in that it is aware of 34 * both small and large file interfaces. It must be built 35 * in the small compilation environment. 36 */ 37 38 #include "lint.h" 39 #include "file64.h" 40 #include <mtlib.h> 41 #include <sys/types.h> 42 #include <stdio.h> 43 #include <fcntl.h> 44 #include <unistd.h> 45 #include <limits.h> 46 #include <thread.h> 47 #include <synch.h> 48 #include "stdiom.h" 49 #include <errno.h> 50 51 /* 52 * open UNIX file name, associate with iop 53 */ 54 55 FILE * 56 _endopen(const char *name, const char *type, FILE *iop, int largefile) 57 { 58 int oflag, fd, fflag; 59 char plus; 60 61 if (iop == NULL) 62 return (NULL); 63 switch (type[0]) { 64 default: 65 errno = EINVAL; 66 return (NULL); 67 case 'r': 68 oflag = O_RDONLY; 69 fflag = _IOREAD; 70 break; 71 case 'w': 72 oflag = O_WRONLY | O_TRUNC | O_CREAT; 73 fflag = _IOWRT; 74 break; 75 case 'a': 76 oflag = O_WRONLY | O_APPEND | O_CREAT; 77 fflag = _IOWRT; 78 break; 79 } 80 /* UNIX ignores 'b' and treats text and binary the same */ 81 if ((plus = type[1]) == 'b') 82 plus = type[2]; 83 if (plus == '+') { 84 oflag = (oflag & ~(O_RDONLY | O_WRONLY)) | O_RDWR; 85 fflag = _IORW; 86 } 87 88 /* select small or large file open based on flag */ 89 if (largefile) { 90 fd = open64(name, oflag, 0666); 91 } else { 92 fd = open(name, oflag, 0666); 93 } 94 if (fd < 0) 95 return (NULL); 96 97 /* As long as we make sure _flag stays != 0, we don't need to lock */ 98 #ifdef _LP64 99 iop->_file = fd; 100 iop->_flag = (iop->_flag & ~0377) | fflag; 101 #else 102 if (fd <= _FILE_FD_MAX) { 103 SET_FILE(iop, fd); 104 } else if (_file_set(iop, fd, type) != 0) { 105 /* errno set in _file_set() */ 106 (void) close(fd); 107 return (NULL); 108 } 109 iop->_flag = fflag; 110 #endif /* _LP64 */ 111 112 if (oflag == (O_WRONLY | O_APPEND | O_CREAT)) { /* type == "a" */ 113 if (lseek64(fd, (off64_t)0, SEEK_END) < (off64_t)0) { 114 (void) close(fd); 115 return (NULL); 116 } 117 } 118 119 return (iop); 120 } 121