1 /*
2 * Copyright (c) Wipro Technologies Ltd, 2002. All Rights Reserved.
3 *
4 * This program is free software; you can redistribute it and/or modify it
5 * under the terms of version 2 of the GNU General Public License as
6 * published by the Free Software Foundation.
7 *
8 * This program is distributed in the hope that it would be useful, but
9 * WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
11 *
12 * You should have received a copy of the GNU General Public License along
13 * with this program; if not, write the Free Software Foundation, Inc.,
14 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
15 *
16 */
17 /**********************************************************
18 *
19 * TEST IDENTIFIER : query_module02
20 *
21 * EXECUTED BY : anyone
22 *
23 * TEST TITLE : Checking error conditions for query_module(2)
24 *
25 * TEST CASE TOTAL : 5
26 *
27 * AUTHOR : Madhu T L <madhu.tarikere@wipro.com>
28 *
29 * SIGNALS
30 * Uses SIGUSR1 to pause before test if option set.
31 * (See the parse_opts(3) man page).
32 *
33 * DESCRIPTION
34 * Verify that,
35 * 1. query_module(2) returns -1 and sets errno to ENOENT for non-existing
36 * module.
37 * 2. query_module(2) returns -1 and sets errno to EINVAL for invalid
38 * which argument.
39 * 3. query_module(2) returns -1 and sets errno to EINVAL for NULL
40 * module name and valid which argument.
41 * 4. query_module(2) returns -1 and sets errno to EINVAL, if module
42 * name parameter is null terminated (zero length) string.
43 * 5. query_module(2) returns -1 and sets errno to ENAMETOOLONG for long
44 * module name.
45 *
46 * Setup:
47 * Setup signal handling.
48 * Initialize long module name
49 * Set expected errnos for logging
50 * Pause for SIGUSR1 if option specified.
51 *
52 * Test:
53 * Loop if the proper options are given.
54 * Execute system call
55 * Check return code and error number, if matching,
56 * Issue PASS message
57 * Otherwise,
58 * Issue FAIL message
59 *
60 * Cleanup:
61 * Print errno log and/or timing stats if options given
62 *
63 * USAGE: <for command-line>
64 * query_module02 [-c n] [-e] [-f] [-h] [-i n] [-I x] [-p] [-P x] [-t]
65 * where, -c n : Run n copies concurrently.
66 * -e : Turn on errno logging.
67 * -f : Turn off functional testing
68 * -h : Show help screen
69 * -i n : Execute test n times.
70 * -I x : Execute test for x seconds.
71 * -p : Pause for SIGUSR1 before starting
72 * -P x : Pause for x seconds between iterations.
73 * -t : Turn on syscall timing.
74 *
75 ****************************************************************/
76
77 #include <errno.h>
78 #include <pwd.h>
79 #include <sys/types.h>
80 #include <unistd.h>
81 #include <limits.h>
82 #include <asm/atomic.h>
83 #include <linux/module.h>
84 #include "test.h"
85
86 #ifndef PAGE_SIZE
87 #define PAGE_SIZE sysconf(_SC_PAGE_SIZE)
88 #endif
89
90 #define NULLMODNAME ""
91 #define LONGMODNAMECHAR 'm' /* Arbitrarily selected */
92 #define MODNAMEMAX (PAGE_SIZE + 1)
93 #define EXP_RET_VAL -1
94 #define QM_INVALID (QM_INFO + 100)
95
96 struct test_case_t { /* test case structure */
97 char *modname;
98 int which;
99 void *buf;
100 size_t bufsize;
101 int experrno; /* expected errno */
102 char *desc;
103 };
104
105 char *TCID = "query_module02";
106
107 static char longmodname[MODNAMEMAX];
108 static int testno;
109 static char out_buf[PAGE_SIZE];
110 static size_t ret_size;
111
112 static void setup(void);
113 static void cleanup(void);
114
115 static struct test_case_t tdat[] = {
116
117 {"dummy_mod", QM_REFS, (void *)out_buf, sizeof(out_buf), ENOENT,
118 "results for non-existing module"}
119 ,
120
121 {NULL, QM_INVALID, (void *)out_buf, sizeof(out_buf), EINVAL,
122 "results for invalid which argument"}
123 ,
124
125 {NULL, QM_REFS, (void *)out_buf, sizeof(out_buf), EINVAL,
126 "results for NULL module name and valid which argument"}
127 ,
128
129 {NULLMODNAME, QM_REFS, (void *)out_buf, sizeof(out_buf), EINVAL,
130 "results for null terminated (zero lenght) module name"}
131 ,
132
133 {longmodname, QM_REFS, (void *)out_buf, sizeof(out_buf), ENAMETOOLONG,
134 "results for long module name"}
135 ,
136 };
137
138 int TST_TOTAL = sizeof(tdat) / sizeof(tdat[0]);
139
main(int argc,char ** argv)140 int main(int argc, char **argv)
141 {
142 int lc;
143
144 tst_parse_opts(argc, argv, NULL, NULL);
145
146 setup();
147
148 for (lc = 0; TEST_LOOPING(lc); lc++) {
149 /* reset tst_count in case we are looping */
150 tst_count = 0;
151
152 for (testno = 0; testno < TST_TOTAL; ++testno) {
153
154 TEST(query_module(tdat[testno].modname,
155 tdat[testno].which, tdat[testno].buf,
156 tdat[testno].bufsize, &ret_size));
157 if ((TEST_RETURN == EXP_RET_VAL) &&
158 (TEST_ERRNO == tdat[testno].experrno)) {
159 tst_resm(TPASS, "Expected %s, errno: %d",
160 tdat[testno].desc, TEST_ERRNO);
161 } else {
162 tst_resm(TFAIL, "Unexpected %s ; returned"
163 " %d (expected %d), errno %d (expected"
164 " %d)", tdat[testno].desc,
165 TEST_RETURN, EXP_RET_VAL,
166 TEST_ERRNO, tdat[testno].experrno);
167 }
168 }
169 }
170 cleanup();
171
172 tst_exit();
173 }
174
175 /*
176 * setup()
177 * performs all ONE TIME setup for this test
178 */
setup(void)179 void setup(void)
180 {
181
182 tst_sig(FORK, DEF_HANDLER, cleanup);
183
184 if (tst_kvercmp(2, 5, 48) >= 0)
185 tst_brkm(TCONF, NULL, "This test will not work on "
186 "kernels after 2.5.48");
187
188 /* Initialize longmodname to LONGMODNAMECHAR character */
189 memset(longmodname, LONGMODNAMECHAR, MODNAMEMAX - 1);
190
191 /* Pause if that option was specified
192 * TEST_PAUSE contains the code to fork the test with the -c option.
193 */
194 TEST_PAUSE;
195 }
196
197 /*
198 * cleanup()
199 * performs all ONE TIME cleanup for this test at
200 * completion or premature exit
201 */
cleanup(void)202 void cleanup(void)
203 {
204
205 }
206