1 /*
2 * Copyright (C) 2008 The Android Open Source Project
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * * Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * * Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in
12 * the documentation and/or other materials provided with the
13 * distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
16 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
17 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
18 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
19 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
21 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
22 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
23 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
24 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
25 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28 #ifndef _ERRNO_H
29 #define _ERRNO_H
30
31 #include <sys/cdefs.h>
32 #include <linux/errno.h>
33
34 __BEGIN_DECLS
35
36 /* on Linux, ENOTSUP and EOPNOTSUPP are defined as the same error code
37 * even if 1000.3 states that they should be different
38 */
39 #ifndef ENOTSUP
40 #define ENOTSUP EOPNOTSUPP
41 #endif
42
43 /* internal function returning the address of the thread-specific errno */
44 extern volatile int* __errno(void);
45
46 /* a macro expanding to the errno l-value */
47 #define errno (*__errno())
48
49 /* internal function that should *only* be called from system calls */
50 /* use errno = xxxx instead in C code */
51 static __inline__ int __attribute__((deprecated))
__set_errno(int n)52 __set_errno(int n) {
53 errno = n;
54 return -1;
55 }
56
57 __END_DECLS
58
59 #endif /* _ERRNO_H */
60