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 /*
28 * attropen -- C library extension routine
29 */
30
31 #if !defined(_LP64) && _FILE_OFFSET_BITS == 64
32 #pragma weak _attropen64 = attropen64
33 #else
34 #pragma weak _attropen = attropen
35 #endif
36
37 #include "lint.h"
38 #include <sys/types.h>
39 #include <sys/stat.h>
40 #include <fcntl.h>
41 #include <stdlib.h>
42 #include <errno.h>
43 #include <unistd.h>
44 #include <stdarg.h>
45
46 #if !defined(_LP64) && _FILE_OFFSET_BITS == 64
47
48 int
attropen64(const char * file,const char * attr,int oflag,...)49 attropen64(const char *file, const char *attr, int oflag, ...)
50 {
51 int fd;
52 int attrfd;
53 int saverrno;
54 va_list ap;
55
56 va_start(ap, oflag);
57
58 if ((fd = open64(file, O_RDONLY|O_NONBLOCK)) == -1) {
59 va_end(ap);
60 return (-1);
61 }
62
63 if ((attrfd = openat64(fd, attr, oflag | O_XATTR,
64 va_arg(ap, mode_t))) == -1) {
65 saverrno = errno;
66 (void) close(fd);
67 errno = saverrno;
68 va_end(ap);
69 return (-1);
70 }
71
72 (void) close(fd);
73 va_end(ap);
74 return (attrfd);
75 }
76
77 #else
78
79 int
attropen(const char * file,const char * attr,int oflag,...)80 attropen(const char *file, const char *attr, int oflag, ...)
81 {
82 int fd;
83 int attrfd;
84 int saverrno;
85 va_list ap;
86
87 va_start(ap, oflag);
88
89 if ((fd = open(file, O_RDONLY|O_NONBLOCK)) == -1) {
90 va_end(ap);
91 return (-1);
92 }
93
94 if ((attrfd = openat(fd, attr, oflag | O_XATTR,
95 va_arg(ap, mode_t))) == -1) {
96 saverrno = errno;
97 (void) close(fd);
98 errno = saverrno;
99 va_end(ap);
100 return (-1);
101 }
102
103 (void) close(fd);
104 va_end(ap);
105 return (attrfd);
106 }
107
108 #endif /* _FILE_OFFSET_BITS == 64 */
109