@samitouri / QOSamiQemu
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1 /*
2 * logging unit-tests
3 *
4 * Copyright (C) 2016 Linaro Ltd.
5 *
6 * Author: Alex Bennée <alex.bennee@linaro.org>
7 *
8 * Permission is hereby granted, free of charge, to any person obtaining a copy
9 * of this software and associated documentation files (the "Software"), to deal
10 * in the Software without restriction, including without limitation the rights
11 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
12 * copies of the Software, and to permit persons to whom the Software is
13 * furnished to do so, subject to the following conditions:
14 *
15 * The above copyright notice and this permission notice shall be included in
16 * all copies or substantial portions of the Software.
17 *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
19 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
21 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
22 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
23 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
24 * THE SOFTWARE.
25 */
26
27 #include "qemu/osdep.h"
28 #include <glib/gstdio.h>
29
30 #include "qapi/error.h"
31 #include "qemu/log.h"
32 #include "qemu/rcu.h"
33
34 static void test_parse_range(void)
35 {
36 Error *err = NULL;
37
38 qemu_set_dfilter_ranges("0x1000+0x100", &error_abort);
39
40 g_assert_false(qemu_log_in_addr_range(0xfff));
41 g_assert(qemu_log_in_addr_range(0x1000));
42 g_assert(qemu_log_in_addr_range(0x1001));
43 g_assert(qemu_log_in_addr_range(0x10ff));
44 g_assert_false(qemu_log_in_addr_range(0x1100));
45
46 qemu_set_dfilter_ranges("0x1000-0x100", &error_abort);
47
48 g_assert_false(qemu_log_in_addr_range(0x1001));
49 g_assert(qemu_log_in_addr_range(0x1000));
50 g_assert(qemu_log_in_addr_range(0x0f01));
51 g_assert_false(qemu_log_in_addr_range(0x0f00));
52
53 qemu_set_dfilter_ranges("0x1000..0x1100", &error_abort);
54
55 g_assert_false(qemu_log_in_addr_range(0xfff));
56 g_assert(qemu_log_in_addr_range(0x1000));
57 g_assert(qemu_log_in_addr_range(0x1100));
58 g_assert_false(qemu_log_in_addr_range(0x1101));
59
60 qemu_set_dfilter_ranges("0x1000..0x1000", &error_abort);
61
62 g_assert_false(qemu_log_in_addr_range(0xfff));
63 g_assert(qemu_log_in_addr_range(0x1000));
64 g_assert_false(qemu_log_in_addr_range(0x1001));
65
66 qemu_set_dfilter_ranges("0x1000+0x100,0x2100-0x100,0x3000..0x3100",
67 &error_abort);
68 g_assert(qemu_log_in_addr_range(0x1050));
69 g_assert(qemu_log_in_addr_range(0x2050));
70 g_assert(qemu_log_in_addr_range(0x3050));
71
72 qemu_set_dfilter_ranges("0xffffffffffffffff-1", &error_abort);
73 g_assert(qemu_log_in_addr_range(UINT64_MAX));
74 g_assert_false(qemu_log_in_addr_range(UINT64_MAX - 1));
75
76 qemu_set_dfilter_ranges("0..0xffffffffffffffff", &error_abort);
77 g_assert(qemu_log_in_addr_range(0));
78 g_assert(qemu_log_in_addr_range(UINT64_MAX));
79
80 qemu_set_dfilter_ranges("2..1", &err);
81 error_free_or_abort(&err);
82
83 qemu_set_dfilter_ranges("0x1000+onehundred", &err);
84 error_free_or_abort(&err);
85
86 qemu_set_dfilter_ranges("0x1000+0", &err);
87 error_free_or_abort(&err);
88 }
89
90 static void set_log_path_tmp(char const *dir, char const *tpl, Error **errp)
91 {
92 gchar *file_path = g_build_filename(dir, tpl, NULL);
93
94 qemu_set_log_filename(file_path, errp);
95 g_free(file_path);
96 }
97
98 static void test_parse_path(gconstpointer data)
99 {
100 gchar const *tmp_path = data;
101 Error *err = NULL;
102
103 set_log_path_tmp(tmp_path, "qemu.log", &error_abort);
104 set_log_path_tmp(tmp_path, "qemu-%d.log", &error_abort);
105 set_log_path_tmp(tmp_path, "qemu.log.%d", &error_abort);
106
107 set_log_path_tmp(tmp_path, "qemu-%d%d.log", &err);
108 error_free_or_abort(&err);
109 }
110
111 static void test_logfile_write(gconstpointer data)
112 {
113 FILE *logfile0, *logfile1;
114 gchar const *dir = data;
115 g_autofree gchar *file_path0 = NULL;
116 g_autofree gchar *file_path1 = NULL;
117
118 /*
119 * Before starting test, set log flags, to ensure the file gets
120 * opened below with the call to qemu_set_log_filename().
121 * In cases where a logging backend other than log is used,
122 * this is needed.
123 */
124 qemu_set_log(CPU_LOG_TB_OUT_ASM, &error_abort);
125 file_path0 = g_build_filename(dir, "qemu_test_log_write0.log", NULL);
126 file_path1 = g_build_filename(dir, "qemu_test_log_write1.log", NULL);
127
128 /*
129 * Test that even if an open file handle is changed,
130 * our handle remains valid due to RCU.
131 */
132 qemu_set_log_filename(file_path0, &error_abort);
133 logfile0 = qemu_log_trylock();
134 g_assert(logfile0);
135 fprintf(logfile0, "%s 1st write to file\n", __func__);
136 fflush(logfile0);
137
138 /* Change the logfile and ensure that the handle is still valid. */
139 qemu_set_log_filename(file_path1, &error_abort);
140 logfile1 = qemu_log_trylock();
141 g_assert(logfile1);
142 g_assert(logfile0 != logfile1);
143 fprintf(logfile0, "%s 2nd write to file\n", __func__);
144 fflush(logfile0);
145 qemu_log_unlock(logfile0);
146 qemu_log_unlock(logfile1);
147 }
148
149 static void test_logfile_lock(gconstpointer data)
150 {
151 FILE *logfile;
152 gchar const *dir = data;
153 g_autofree gchar *file_path = NULL;
154
155 file_path = g_build_filename(dir, "qemu_test_logfile_lock0.log", NULL);
156
157 /*
158 * Test the use of the logfile lock, such
159 * that even if an open file handle is closed,
160 * our handle remains valid for use due to RCU.
161 */
162 qemu_set_log_filename(file_path, &error_abort);
163 logfile = qemu_log_trylock();
164 g_assert(logfile);
165 fprintf(logfile, "%s 1st write to file\n", __func__);
166 fflush(logfile);
167
168 /*
169 * Initiate a close file and make sure our handle remains
170 * valid since we still have the logfile lock.
171 */
172 qemu_set_log_filename_flags(NULL, 0, &error_abort);
173 fprintf(logfile, "%s 2nd write to file\n", __func__);
174 fflush(logfile);
175 qemu_log_unlock(logfile);
176 }
177
178 /* Remove a directory and all its entries (non-recursive). */
179 static void rmdir_full(gchar const *root)
180 {
181 GDir *root_gdir = g_dir_open(root, 0, NULL);
182 gchar const *entry_name;
183
184 g_assert_nonnull(root_gdir);
185 while ((entry_name = g_dir_read_name(root_gdir)) != NULL) {
186 gchar *entry_path = g_build_filename(root, entry_name, NULL);
187 g_assert(g_remove(entry_path) == 0);
188 g_free(entry_path);
189 }
190 g_dir_close(root_gdir);
191 g_assert(g_rmdir(root) == 0);
192 }
193
194 int main(int argc, char **argv)
195 {
196 g_autofree gchar *tmp_path = g_dir_make_tmp("qemu-test-logging.XXXXXX", NULL);
197 int rc;
198
199 g_test_init(&argc, &argv, NULL);
200 g_assert_nonnull(tmp_path);
201
202 g_test_add_func("/logging/parse_range", test_parse_range);
203 g_test_add_data_func("/logging/parse_path", tmp_path, test_parse_path);
204 g_test_add_data_func("/logging/logfile_write_path",
205 tmp_path, test_logfile_write);
206 g_test_add_data_func("/logging/logfile_lock_path",
207 tmp_path, test_logfile_lock);
208
209 rc = g_test_run();
210 qemu_set_log_filename_flags(NULL, 0, &error_abort);
211 drain_call_rcu();
212
213 rmdir_full(tmp_path);
214 return rc;
215 }