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
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
|
/* AFF4 error functions.
*
* Copyright 2010, Michael Cohen <sucdette@gmail.com>.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef AFF4_ERRORS_H_
#define AFF4_ERRORS_H_
#include "class.h"
// Some helpful little things
#define ERROR_BUFFER_SIZE 1024
/** This is used for error reporting. This is similar to the way
python does it, i.e. we set the error flag and return NULL.
*/
#define EZero 0
#define EGeneric 1
#define EOverflow 2
#define EWarning 3
#define EUnderflow 4
#define EIOError 5
#define ENoMemory 6
#define EInvalidParameter 7
#define ERuntimeError 8
#define EKeyError 9
// Reserved for impossible conditions
#define EProgrammingError 10
DLL_PUBLIC void *aff4_raise_errors(int t, char *string, ...);
/** We only set the error state if its not already set */
#define RaiseError(t, message, ...) \
aff4_raise_errors(t, "%s: (%s:%d) " message, __FUNCTION__, __FILE__, __LINE__, ## __VA_ARGS__);
#define LogWarnings(format, ...) \
do { \
RaiseError(EWarning, format, ## __VA_ARGS__); \
PrintError(); \
} while(0);
#define ClearError() \
do {*aff4_get_current_error(NULL) = EZero;} while(0);
#define PrintError() \
do {char *error_str; if(*aff4_get_current_error(&error_str)) fprintf(stdout, "%s", error_str); fflush(stdout); ClearError(); }while(0);
#define CheckError(error) \
(*aff4_get_current_error(NULL) == error)
/** The current error state is returned by this function.
This is done in a thread safe manner.
*/
DLL_PUBLIC int *aff4_get_current_error(char **error_str);
// These macros are used when we need to do something which might
// change the error state on the error path of a function.
#define PUSH_ERROR_STATE { int *tmp_error_p = aff4_get_current_error(NULL); int tmp_error = *tmp_error_p; int exception __attribute__((unused));
#define POP_ERROR_STATE *tmp_error_p = tmp_error;};
#endif /* !AFF4_ERRORS_H_ */
|
