1/*
2 *
3 *   Copyright (c) International Business Machines  Corp., 2001
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 *   This program is distributed in the hope that it will be useful,
11 *   but WITHOUT ANY WARRANTY;  without even the implied warranty of
12 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
13 *   the GNU General Public License for more details.
14 *
15 *   You should have received a copy of the GNU General Public License
16 *   along with this program;  if not, write to the Free Software
17 *   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
18 */
19
20/*
21 * Test Name: llseek02
22 * Note that glibc exports the llseek syscall as lseek64.
23 *
24 * Test Description:
25 *  Verify that,
26 *  1. llseek() returns -1 and sets errno to EINVAL, if the 'Whence' argument
27 *     is not a proper value.
28 *  2. llseek() returns -1 and sets errno to EBADF, if the file handle of
29 *     the specified file is not valid.
30 *
31 * Expected Result:
32 *  llseek() should fail with return value -1 and set expected errno.
33 *
34 * Algorithm:
35 *  Setup:
36 *   Setup signal handling.
37 *   Create temporary directory.
38 *   Pause for SIGUSR1 if option specified.
39 *
40 *  Test:
41 *   Loop if the proper options are given.
42 *   Execute system call
43 *   Check return code, if system call failed (return=-1)
44 *	if errno set == expected errno
45 *		Issue sys call fails with expected return value and errno.
46 *	Otherwise,
47 *		Issue sys call fails with unexpected errno.
48 *   Otherwise,
49 *	Issue sys call returns unexpected value.
50 *
51 *  Cleanup:
52 *   Print errno log and/or timing stats if options given
53 *   Delete the temporary directory(s)/file(s) created.
54 *
55 * Usage:  <for command-line>
56 *  llseek02 [-c n] [-e] [-i n] [-I x] [-P x] [-t]
57 *     where,  -c n : Run n copies concurrently.
58 *	       -i n : Execute test n times.
59 *	       -I x : Execute test for x seconds.
60 *	       -P x : Pause for x seconds between iterations.
61 *	       -t   : Turn on syscall timing.
62 *
63 * HISTORY
64 *	07/2001 Ported by Wayne Boyer
65 *
66 * RESTRICTIONS:
67 *  None.
68 */
69
70#ifndef _GNU_SOURCE
71#define _GNU_SOURCE
72#endif
73
74#include <stdio.h>
75#include <unistd.h>
76#include <sys/types.h>
77#include <errno.h>
78#include <fcntl.h>
79#include <utime.h>
80#include <string.h>
81#include <sys/stat.h>
82#include <signal.h>
83
84#include "test.h"
85
86#define TEMP_FILE1	"tmp_file1"
87#define TEMP_FILE2	"tmp_file2"
88#define FILE_MODE	S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH
89#define SEEK_TOP	10
90
91char *TCID = "llseek02";
92int TST_TOTAL = 2;
93
94int no_setup();
95int setup1();			/* setup function to test llseek() for EINVAL */
96int setup2();			/* setup function to test llseek() for EBADF */
97
98int fd1;			/* file handle for testfile1  */
99int fd2;			/* file handle for testfile2  */
100
101struct test_case_t {		/* test case struct. to hold ref. test cond's */
102	int fd;
103	int Whence;
104	char *desc;
105	int exp_errno;
106	int (*setupfunc) ();
107} Test_cases[] = {
108	{
109	1, SEEK_TOP, "'whence' argument is not valid", EINVAL, setup1}, {
110	2, SEEK_SET, "'fd' is not an open file descriptor", EBADF, setup2},
111	{
112	0, 0, NULL, 0, no_setup}
113};
114
115void setup();			/* Main setup function of test */
116void cleanup();			/* cleanup function for the test */
117
118int main(int ac, char **av)
119{
120	int lc;
121	int fildes;		/* file handle for testfile */
122	int whence;		/* position of file handle in the file */
123	char *test_desc;	/* test specific error message */
124	int ind;		/* counter to test different test conditions */
125
126	tst_parse_opts(ac, av, NULL, NULL);
127
128	setup();
129
130	for (lc = 0; TEST_LOOPING(lc); lc++) {
131
132		tst_count = 0;
133
134		for (ind = 0; Test_cases[ind].desc != NULL; ind++) {
135			fildes = Test_cases[ind].fd;
136			test_desc = Test_cases[ind].desc;
137			whence = Test_cases[ind].Whence;
138
139			/* Assign the 'fd' values appropriatly */
140			if (fildes == 1) {
141				fildes = fd1;
142			} else {
143				fildes = fd2;
144			}
145
146			/*
147			 * Invoke llseek(2) to test different test conditions.
148			 * Verify that it fails with -1 return value and
149			 * sets appropriate errno.
150			 */
151			TEST(lseek64(fildes, (loff_t) 0, whence));
152
153			if (TEST_RETURN != (loff_t) - 1) {
154				tst_resm(TFAIL,
155					 "llseek() returned %ld, expected"
156					 " -1, errno:%d", TEST_RETURN,
157					 Test_cases[ind].exp_errno);
158				continue;
159			}
160			if (TEST_ERRNO == Test_cases[ind].exp_errno) {
161				tst_resm(TPASS, "llseek() fails, %s, errno:%d",
162					 test_desc, TEST_ERRNO);
163			} else {
164				tst_resm(TFAIL, "llseek() fails, %s, errno:%d, "
165					 "expected errno:%d", test_desc,
166					 TEST_ERRNO, Test_cases[ind].exp_errno);
167			}
168		}
169	}
170
171	cleanup();
172
173	tst_exit();
174}
175
176/*
177 * setup() - performs all ONE TIME setup for this test.
178 *           Create a temporary directory and change directory to it.
179 *           Invoke individual test setup functions according to the order
180 *           set in test struct. definition.
181 */
182void setup(void)
183{
184	int ind;
185
186	tst_sig(NOFORK, DEF_HANDLER, cleanup);
187
188	TEST_PAUSE;
189
190	tst_tmpdir();
191
192	/* call individual setup functions */
193	for (ind = 0; Test_cases[ind].desc != NULL; ind++) {
194		Test_cases[ind].setupfunc();
195	}
196}
197
198/*
199 * no_setup() - This is a dummy function which simply returns 0.
200 */
201int no_setup(void)
202{
203	return 0;
204}
205
206/*
207 * setup1() - setup function for a test condition for which llseek(2)
208 *            returns -1 and sets errno to EINVAL.
209 *            Creat a temporary file for reading/writing and write some data
210 *            into it.
211 *            This function returns 0 on success.
212 */
213int setup1(void)
214{
215	char write_buff[BUFSIZ];	/* buffer to hold data */
216
217	/* Get the data to be written to temporary file */
218	strcpy(write_buff, "abcdefg");
219
220	/* Creat/open a temporary file under above directory */
221	if ((fd1 = open(TEMP_FILE1, O_RDWR | O_CREAT, FILE_MODE)) == -1) {
222		tst_brkm(TBROK, cleanup,
223			 "open(%s, O_RDWR|O_CREAT, %#o) Failed, errno=%d :%s",
224			 TEMP_FILE1, FILE_MODE, errno, strerror(errno));
225	}
226
227	/* Write data into temporary file */
228	if (write(fd1, write_buff, sizeof(write_buff)) <= 0) {
229		tst_brkm(TBROK, cleanup, "write(2) on %s Failed, errno=%d : %s",
230			 TEMP_FILE1, errno, strerror(errno));
231	}
232
233	return 0;
234}
235
236/*
237 * setup2() - setup function for a test condition for which llseek(2)
238 *            returns -1 and sets errno to EBADF.
239 *            Creat a temporary file for reading/writing and close it.
240 *            This function returns 0 on success.
241 */
242int setup2(void)
243{
244	/* Creat/open a temporary file under above directory */
245	if ((fd2 = open(TEMP_FILE2, O_RDWR | O_CREAT, FILE_MODE)) == -1) {
246		tst_brkm(TBROK, cleanup,
247			 "open(%s, O_RDWR|O_CREAT, %#o) Failed, errno=%d :%s",
248			 TEMP_FILE2, FILE_MODE, errno, strerror(errno));
249	}
250
251	/* Close the temporary file created above */
252	if (close(fd2) < 0) {
253		tst_brkm(TBROK, cleanup, "close(%s) Failed, errno=%d : %s:",
254			 TEMP_FILE2, errno, strerror(errno));
255	}
256
257	return 0;
258}
259
260/*
261 * cleanup() - performs all ONE TIME cleanup for this test at
262 *             completion or premature exit.
263 *             Close the temporary file.
264 *             Remove the test directory and testfile created in the setup.
265 */
266void cleanup(void)
267{
268
269	/* Close the temporary file(s) created in setup1/setup2 */
270	if (close(fd1) < 0) {
271		tst_brkm(TFAIL, NULL, "close(%s) Failed, errno=%d : %s:",
272			 TEMP_FILE1, errno, strerror(errno));
273	}
274
275	tst_rmdir();
276
277}
278