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