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 /* Copyright (c) 2013 OmniTI Computer Consulting, Inc. All rights reserved. */
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 *
_endopen(const char * name,const char * type,FILE * iop,int largefile)56 _endopen(const char *name, const char *type, FILE *iop, int largefile)
57 {
58 int oflag, fd, fflag;
59
60 if (iop == NULL)
61 return (NULL);
62
63 if (_stdio_flags(type, &oflag, &fflag) != 0) {
64 return (NULL);
65 }
66
67 /* select small or large file open based on flag */
68 if (largefile) {
69 fd = open64(name, oflag, 0666);
70 } else {
71 fd = open(name, oflag, 0666);
72 }
73 if (fd < 0)
74 return (NULL);
75
76 /* As long as we make sure _flag stays != 0, we don't need to lock */
77 #ifdef _LP64
78 iop->_file = fd;
79 iop->_flag = (iop->_flag & ~_DEF_FLAG_MASK) | fflag;
80 #else
81 if (fd <= _FILE_FD_MAX) {
82 SET_FILE(iop, fd);
83 } else if (_file_set(iop, fd, type) != 0) {
84 /* errno set in _file_set() */
85 int err = errno;
86 (void) close(fd);
87 errno = err;
88 return (NULL);
89 }
90 iop->_flag = fflag;
91 #endif /* _LP64 */
92
93 if (oflag == (O_WRONLY | O_APPEND | O_CREAT)) { /* type == "a" */
94 if (_xseek64(iop, (off64_t)0, SEEK_END) < (off64_t)0) {
95 (void) _xclose(iop);
96 return (NULL);
97 }
98 }
99
100 return (iop);
101 }
102