1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
|
/* SPDX-License-Identifier: GPL-2.0+ OR Apache-2.0 */
/*
* Copyright (C) 2018 HUAWEI, Inc.
* http://www.huawei.com/
* Created by Li Guifu <bluce.liguifu@huawei.com>
*/
#ifndef __EROFS_ERR_H
#define __EROFS_ERR_H
#ifdef __cplusplus
extern "C"
{
#endif
#include <errno.h>
#include <string.h>
#include <stdio.h>
#ifndef ENODATA
#define ENODATA ENOATTR
#endif
static inline const char *erofs_strerror(int err)
{
static char msg[256];
sprintf(msg, "[Error %d] %s", -err, strerror(-err));
return msg;
}
#define MAX_ERRNO (4095)
#define IS_ERR_VALUE(x) \
((unsigned long)(void *)(x) >= (unsigned long)-MAX_ERRNO)
static inline void *ERR_PTR(long error)
{
return (void *)error;
}
static inline int IS_ERR(const void *ptr)
{
return IS_ERR_VALUE((unsigned long)ptr);
}
static inline long PTR_ERR(const void *ptr)
{
return (long) ptr;
}
static inline void * ERR_CAST(const void *ptr)
{
/* cast away the const */
return (void *) ptr;
}
#ifdef __cplusplus
}
#endif
#endif
|
