1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright(c) 2010-2014 Intel Corporation
3 */
4
5 #include "test.h"
6 #include <stdio.h>
7 #include <stdlib.h>
8 #include <string.h>
9 #include <errno.h>
10
11 #include "eal_filesystem.h"
12
13 #ifdef RTE_EXEC_ENV_WINDOWS
14 static int
test_eal_fs(void)15 test_eal_fs(void)
16 {
17 printf("eal_fs not supported on Windows, skipping test\n");
18 return TEST_SKIPPED;
19 }
20
21 #else
22
23 static int
test_parse_sysfs_value(void)24 test_parse_sysfs_value(void)
25 {
26 char filename[PATH_MAX] = "";
27 char proc_path[PATH_MAX];
28 char file_template[] = "/tmp/eal_test_XXXXXX";
29 int tmp_file_handle = -1;
30 FILE *fd = NULL;
31 unsigned valid_number;
32 unsigned long retval = 0;
33
34 #ifdef RTE_EXEC_ENV_FREEBSD
35 /* BSD doesn't have /proc/pid/fd */
36 return 0;
37 #endif
38
39 printf("Testing function eal_parse_sysfs_value()\n");
40
41 /* get a temporary filename to use for all tests - create temp file handle and then
42 * use /proc to get the actual file that we can open */
43 tmp_file_handle = mkstemp(file_template);
44 if (tmp_file_handle == -1) {
45 perror("mkstemp() failure");
46 goto error;
47 }
48 snprintf(proc_path, sizeof(proc_path), "/proc/self/fd/%d", tmp_file_handle);
49 if (readlink(proc_path, filename, sizeof(filename)) < 0) {
50 perror("readlink() failure");
51 goto error;
52 }
53 printf("Temporary file is: %s\n", filename);
54
55 /* test we get an error value if we use file before it's created */
56 printf("Test reading a missing file ...\n");
57 if (eal_parse_sysfs_value("/dev/not-quite-null", &retval) == 0) {
58 printf("Error with eal_parse_sysfs_value() - returned success on reading empty file\n");
59 goto error;
60 }
61 printf("Confirmed return error when reading empty file\n");
62
63 /* test reading a valid number value with "\n" on the end */
64 printf("Test reading valid values ...\n");
65 valid_number = 15;
66 fd = fopen(filename,"w");
67 if (fd == NULL) {
68 printf("line %d, Error opening %s: %s\n", __LINE__, filename, strerror(errno));
69 goto error;
70 }
71 fprintf(fd,"%u\n", valid_number);
72 fclose(fd);
73 fd = NULL;
74 if (eal_parse_sysfs_value(filename, &retval) < 0) {
75 printf("eal_parse_sysfs_value() returned error - test failed\n");
76 goto error;
77 }
78 if (retval != valid_number) {
79 printf("Invalid value read by eal_parse_sysfs_value() - test failed\n");
80 goto error;
81 }
82 printf("Read '%u\\n' ok\n", valid_number);
83
84 /* test reading a valid hex number value with "\n" on the end */
85 valid_number = 25;
86 fd = fopen(filename,"w");
87 if (fd == NULL) {
88 printf("line %d, Error opening %s: %s\n", __LINE__, filename, strerror(errno));
89 goto error;
90 }
91 fprintf(fd,"0x%x\n", valid_number);
92 fclose(fd);
93 fd = NULL;
94 if (eal_parse_sysfs_value(filename, &retval) < 0) {
95 printf("eal_parse_sysfs_value() returned error - test failed\n");
96 goto error;
97 }
98 if (retval != valid_number) {
99 printf("Invalid value read by eal_parse_sysfs_value() - test failed\n");
100 goto error;
101 }
102 printf("Read '0x%x\\n' ok\n", valid_number);
103
104 printf("Test reading invalid values ...\n");
105
106 /* test reading an empty file - expect failure!*/
107 fd = fopen(filename,"w");
108 if (fd == NULL) {
109 printf("line %d, Error opening %s: %s\n", __LINE__, filename, strerror(errno));
110 goto error;
111 }
112 fclose(fd);
113 fd = NULL;
114 if (eal_parse_sysfs_value(filename, &retval) == 0) {
115 printf("eal_parse_sysfs_value() read invalid value - test failed\n");
116 goto error;
117 }
118
119 /* test reading a valid number value *without* "\n" on the end - expect failure!*/
120 valid_number = 3;
121 fd = fopen(filename,"w");
122 if (fd == NULL) {
123 printf("line %d, Error opening %s: %s\n", __LINE__, filename, strerror(errno));
124 goto error;
125 }
126 fprintf(fd,"%u", valid_number);
127 fclose(fd);
128 fd = NULL;
129 if (eal_parse_sysfs_value(filename, &retval) == 0) {
130 printf("eal_parse_sysfs_value() read invalid value - test failed\n");
131 goto error;
132 }
133
134 /* test reading a valid number value followed by string - expect failure!*/
135 valid_number = 3;
136 fd = fopen(filename,"w");
137 if (fd == NULL) {
138 printf("line %d, Error opening %s: %s\n", __LINE__, filename, strerror(errno));
139 goto error;
140 }
141 fprintf(fd,"%uJ\n", valid_number);
142 fclose(fd);
143 fd = NULL;
144 if (eal_parse_sysfs_value(filename, &retval) == 0) {
145 printf("eal_parse_sysfs_value() read invalid value - test failed\n");
146 goto error;
147 }
148
149 /* test reading a non-numeric value - expect failure!*/
150 fd = fopen(filename,"w");
151 if (fd == NULL) {
152 printf("line %d, Error opening %s: %s\n", __LINE__, filename, strerror(errno));
153 goto error;
154 }
155 fprintf(fd,"error\n");
156 fclose(fd);
157 fd = NULL;
158 if (eal_parse_sysfs_value(filename, &retval) == 0) {
159 printf("eal_parse_sysfs_value() read invalid value - test failed\n");
160 goto error;
161 }
162
163 close(tmp_file_handle);
164 unlink(filename);
165 printf("eal_parse_sysfs_value() - OK\n");
166 return 0;
167
168 error:
169 if (fd)
170 fclose(fd);
171 if (tmp_file_handle > 0)
172 close(tmp_file_handle);
173 if (filename[0] != '\0')
174 unlink(filename);
175 return -1;
176 }
177
178 static int
test_eal_fs(void)179 test_eal_fs(void)
180 {
181 if (test_parse_sysfs_value() < 0)
182 return -1;
183 return 0;
184 }
185
186 #endif /* !RTE_EXEC_ENV_WINDOWS */
187
188 REGISTER_TEST_COMMAND(eal_fs_autotest, test_eal_fs);
189