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1 /******************************************************************************
2  *
3  *   Copyright © International Business Machines  Corp., 2009
4  *
5  *   This program is free software;  you can redistribute it and/or modify
6  *   it under the terms of the GNU General Public License as published by
7  *   the Free Software Foundation; either version 2 of the License, or
8  *   (at your option) any later version.
9  *
10  * DESCRIPTION
11  *      Glibc independent futex library for testing kernel functionality.
12  *
13  * AUTHOR
14  *      Darren Hart <dvhart@linux.intel.com>
15  *
16  * HISTORY
17  *      2009-Nov-6: Initial version by Darren Hart <dvhart@linux.intel.com>
18  *
19  *****************************************************************************/
20 
21 #ifndef _LOGGING_H
22 #define _LOGGING_H
23 
24 #include <stdio.h>
25 #include <string.h>
26 #include <unistd.h>
27 #include <linux/futex.h>
28 #include "kselftest.h"
29 
30 /*
31  * Define PASS, ERROR, and FAIL strings with and without color escape
32  * sequences, default to no color.
33  */
34 #define ESC 0x1B, '['
35 #define BRIGHT '1'
36 #define GREEN '3', '2'
37 #define YELLOW '3', '3'
38 #define RED '3', '1'
39 #define ESCEND 'm'
40 #define BRIGHT_GREEN ESC, BRIGHT, ';', GREEN, ESCEND
41 #define BRIGHT_YELLOW ESC, BRIGHT, ';', YELLOW, ESCEND
42 #define BRIGHT_RED ESC, BRIGHT, ';', RED, ESCEND
43 #define RESET_COLOR ESC, '0', 'm'
44 static const char PASS_COLOR[] = {BRIGHT_GREEN, ' ', 'P', 'A', 'S', 'S',
45 				  RESET_COLOR, 0};
46 static const char ERROR_COLOR[] = {BRIGHT_YELLOW, 'E', 'R', 'R', 'O', 'R',
47 				   RESET_COLOR, 0};
48 static const char FAIL_COLOR[] = {BRIGHT_RED, ' ', 'F', 'A', 'I', 'L',
49 				  RESET_COLOR, 0};
50 static const char INFO_NORMAL[] = " INFO";
51 static const char PASS_NORMAL[] = " PASS";
52 static const char ERROR_NORMAL[] = "ERROR";
53 static const char FAIL_NORMAL[] = " FAIL";
54 const char *INFO = INFO_NORMAL;
55 const char *PASS = PASS_NORMAL;
56 const char *ERROR = ERROR_NORMAL;
57 const char *FAIL = FAIL_NORMAL;
58 
59 /* Verbosity setting for INFO messages */
60 #define VQUIET    0
61 #define VCRITICAL 1
62 #define VINFO     2
63 #define VMAX      VINFO
64 int _verbose = VCRITICAL;
65 
66 /* Functional test return codes */
67 #define RET_PASS   0
68 #define RET_ERROR -1
69 #define RET_FAIL  -2
70 
71 /**
72  * log_color() - Use colored output for PASS, ERROR, and FAIL strings
73  * @use_color:	use color (1) or not (0)
74  */
log_color(int use_color)75 void log_color(int use_color)
76 {
77 	if (use_color) {
78 		PASS = PASS_COLOR;
79 		ERROR = ERROR_COLOR;
80 		FAIL = FAIL_COLOR;
81 	} else {
82 		PASS = PASS_NORMAL;
83 		ERROR = ERROR_NORMAL;
84 		FAIL = FAIL_NORMAL;
85 	}
86 }
87 
88 /**
89  * log_verbosity() - Set verbosity of test output
90  * @verbose:	Enable (1) verbose output or not (0)
91  *
92  * Currently setting verbose=1 will enable INFO messages and 0 will disable
93  * them. FAIL and ERROR messages are always displayed.
94  */
log_verbosity(int level)95 void log_verbosity(int level)
96 {
97 	if (level > VMAX)
98 		level = VMAX;
99 	else if (level < 0)
100 		level = 0;
101 	_verbose = level;
102 }
103 
104 /**
105  * print_result() - Print standard PASS | ERROR | FAIL results
106  * @ret:	the return value to be considered: 0 | RET_ERROR | RET_FAIL
107  *
108  * print_result() is primarily intended for functional tests.
109  */
print_result(const char * test_name,int ret)110 void print_result(const char *test_name, int ret)
111 {
112 	switch (ret) {
113 	case RET_PASS:
114 		ksft_test_result_pass("%s\n", test_name);
115 		ksft_print_cnts();
116 		return;
117 	case RET_ERROR:
118 		ksft_test_result_error("%s\n", test_name);
119 		ksft_print_cnts();
120 		return;
121 	case RET_FAIL:
122 		ksft_test_result_fail("%s\n", test_name);
123 		ksft_print_cnts();
124 		return;
125 	}
126 }
127 
128 /* log level macros */
129 #define info(message, vargs...) \
130 do { \
131 	if (_verbose >= VINFO) \
132 		fprintf(stderr, "\t%s: "message, INFO, ##vargs); \
133 } while (0)
134 
135 #define error(message, err, args...) \
136 do { \
137 	if (_verbose >= VCRITICAL) {\
138 		if (err) \
139 			fprintf(stderr, "\t%s: %s: "message, \
140 				ERROR, strerror(err), ##args); \
141 		else \
142 			fprintf(stderr, "\t%s: "message, ERROR, ##args); \
143 	} \
144 } while (0)
145 
146 #define fail(message, args...) \
147 do { \
148 	if (_verbose >= VCRITICAL) \
149 		fprintf(stderr, "\t%s: "message, FAIL, ##args); \
150 } while (0)
151 
152 #endif
153