llseek02.c revision 865695bbc89088b9526ea9045410e5afb70a985c 
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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18 */
19
20/*
21 * Test Name: llseek02
22 *
23 * Test Description:
24 *  Verify that,
25 *  1. llseek() returns -1 and sets errno to EINVAL, if the 'Whence' argument
26 *     is not a proper value.
27 *  2. llseek() returns -1 and sets errno to EBADF, if the file handle of
28 *     the specified file is not valid.
29 *
30 * Expected Result:
31 *  llseek() should fail with return value -1 and set expected errno.
32 *
33 * Algorithm:
34 *  Setup:
35 *   Setup signal handling.
36 *   Create temporary directory.
37 *   Pause for SIGUSR1 if option specified.
38 *
39 *  Test:
40 *   Loop if the proper options are given.
41 *   Execute system call
42 *   Check return code, if system call failed (return=-1)
43 *   	if errno set == expected errno
44 *   		Issue sys call fails with expected return value and errno.
45 *   	Otherwise,
46 *		Issue sys call fails with unexpected errno.
47 *   Otherwise,
48 *	Issue sys call returns unexpected value.
49 *
50 *  Cleanup:
51 *   Print errno log and/or timing stats if options given
52 *   Delete the temporary directory(s)/file(s) created.
53 *
54 * Usage:  <for command-line>
55 *  llseek02 [-c n] [-e] [-i n] [-I x] [-P x] [-t]
56 *     where,  -c n : Run n copies concurrently.
57 *	       -i n : Execute test n times.
58 *	       -I x : Execute test for x seconds.
59 *	       -P x : Pause for x seconds between iterations.
60 *	       -t   : Turn on syscall timing.
61 *
62 * HISTORY
63 *	07/2001 Ported by Wayne Boyer
64 *
65 * RESTRICTIONS:
66 *  None.
67 */
68
69#include <stdio.h>
70#include <unistd.h>
71#include <sys/types.h>
72#include <errno.h>
73#include <fcntl.h>
74#include <utime.h>
75#include <string.h>
76#include <sys/stat.h>
77#include <signal.h>
78
79#include "test.h"
80#include "usctest.h"
81
82#define TEMP_FILE1	"tmp_file1"
83#define TEMP_FILE2	"tmp_file2"
84#define FILE_MODE	S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH
85#define SEEK_TOP	10
86
87char *TCID="llseek02";		/* Test program identifier.    */
88int TST_TOTAL=2;		/* Total number of test cases. */
89extern int Tst_count;		/* Test Case counter for tst_* routines */
90
91int no_setup();
92int setup1();			/* setup function to test llseek() for EINVAL */
93int setup2();			/* setup function to test llseek() for EBADF */
94
95int fd1;			/* file handle for testfile1  */
96int fd2;			/* file handle for testfile2  */
97
98struct test_case_t {		/* test case struct. to hold ref. test cond's*/
99	int fd;
100	int Whence;
101	char *desc;
102	int exp_errno;
103	int (*setupfunc)();
104} Test_cases[] = {
105	{ 1, SEEK_TOP, "'whence' argument is not valid", EINVAL, setup1 },
106	{ 2, SEEK_SET, "'fd' is not an open file descriptor", EBADF, setup2 },
107	{ 0, 0, NULL, 0, no_setup }
108};
109
110int exp_enos[] = {EINVAL, EBADF, 0};
111
112void setup();			/* Main setup function of test */
113void cleanup();			/* cleanup function for the test */
114
115int
116main(int ac, char **av)
117{
118	int lc;			/* loop counter */
119	char *msg;		/* message returned from parse_opts */
120	int fildes;		/* file handle for testfile */
121	int whence;		/* position of file handle in the file */
122	char *test_desc;	/* test specific error message */
123	loff_t offset;		/* return value after llseek  */
124	int ind;		/* counter to test different test conditions */
125
126	/* Parse standard options given to run the test. */
127	msg = parse_opts(ac, av, (option_t *) NULL, NULL);
128	if (msg != (char *) NULL) {
129		tst_brkm(TBROK, NULL, "OPTION PARSING ERROR - %s", msg);
130		tst_exit();
131	}
132
133	/* Perform global setup for test */
134	setup();
135
136	/* set up expected error numbers */
137	TEST_EXP_ENOS(exp_enos);
138
139	/* Check looping state if -i option given */
140	for (lc = 0; TEST_LOOPING(lc); lc++) {
141		/* Reset Tst_count in case we are looping. */
142		Tst_count=0;
143
144		for (ind = 0; Test_cases[ind].desc != NULL; ind++) {
145			fildes = Test_cases[ind].fd;
146			test_desc = Test_cases[ind].desc;
147			whence = Test_cases[ind].Whence;
148
149			/* Assign the 'fd' values appropriatly */
150			if (fildes == 1) {
151				fildes = fd1;
152			} else {
153				fildes = fd2;
154			}
155
156			/*
157		 	 * Invoke llseek(2) to test different test conditions.
158		 	 * Verify that it fails with -1 return value and
159			 * sets appropriate errno.
160		 	 */
161			TEST(llseek(fildes, (loff_t)0, whence));
162
163			/* check return code of llseek(2) */
164			if (TEST_RETURN != (loff_t)-1) {
165				tst_resm(TFAIL, "llseek() returned %d, expected"
166					 " -1, errno:%d", TEST_RETURN,
167					 Test_cases[ind].exp_errno);
168				continue;
169			}
170			TEST_ERROR_LOG(TEST_ERRNO);
171			if (TEST_ERRNO == Test_cases[ind].exp_errno) {
172				tst_resm(TPASS, "llseek() fails, %s, errno:%d",
173					 test_desc, TEST_ERRNO);
174			} else {
175				tst_resm(TFAIL, "llseek() fails, %s, errno:%d, "
176					 "expected errno:%d", test_desc,
177					 TEST_ERRNO, Test_cases[ind].exp_errno);
178			}
179		}
180	}
181
182	/* Call cleanup() to undo setup done for the test. */
183	cleanup();
184
185	/*NOTREACHED*/
186}	/* End main */
187
188/*
189 * setup() - performs all ONE TIME setup for this test.
190 *	     Create a temporary directory and change directory to it.
191 *	     Invoke individual test setup functions according to the order
192 *	     set in test struct. definition.
193 */
194void
195setup()
196{
197	int ind;			/* counter for test setup function */
198
199	/* capture signals */
200	tst_sig(NOFORK, DEF_HANDLER, cleanup);
201
202	/* Pause if that option was specified */
203	TEST_PAUSE;
204
205	/* make a temp directory and cd to it */
206	tst_tmpdir();
207
208	/* call individual setup functions */
209	for (ind = 0; Test_cases[ind].desc != NULL; ind++) {
210		Test_cases[ind].setupfunc();
211	}
212}
213
214/*
215 * no_setup() - This is a dummy function which simply returns 0.
216 */
217int
218no_setup()
219{
220	return 0;
221}
222
223/*
224 * setup1() - setup function for a test condition for which llseek(2)
225 *	      returns -1 and sets errno to EINVAL.
226 *	      Creat a temporary file for reading/writing and write some data
227 *	      into it.
228 *	      This function returns 0 on success.
229 */
230int
231setup1()
232{
233	char write_buff[BUFSIZ];	/* buffer to hold data */
234
235	/* Get the data to be written to temporary file */
236	strcpy(write_buff, "abcdefg");
237
238	/* Creat/open a temporary file under above directory */
239	if ((fd1 = open(TEMP_FILE1, O_RDWR | O_CREAT, FILE_MODE)) == -1) {
240		tst_brkm(TBROK, cleanup,
241			 "open(%s, O_RDWR|O_CREAT, %#o) Failed, errno=%d :%s",
242			 TEMP_FILE1, FILE_MODE, errno, strerror(errno));
243	}
244
245	/* Write data into temporary file */
246	if(write(fd1, write_buff, sizeof(write_buff)) <= 0) {
247		tst_brkm(TBROK, cleanup, "write(2) on %s Failed, errno=%d : %s",
248			 TEMP_FILE1, errno, strerror(errno));
249	}
250
251	return 0;
252}
253
254/*
255 * setup2() - setup function for a test condition for which llseek(2)
256 *	      returns -1 and sets errno to EBADF.
257 *	      Creat a temporary file for reading/writing and close it.
258 *	      This function returns 0 on success.
259 */
260int
261setup2()
262{
263	/* Creat/open a temporary file under above directory */
264	if ((fd2 = open(TEMP_FILE2, O_RDWR | O_CREAT, FILE_MODE)) == -1) {
265		tst_brkm(TBROK, cleanup,
266			 "open(%s, O_RDWR|O_CREAT, %#o) Failed, errno=%d :%s",
267			 TEMP_FILE2, FILE_MODE, errno, strerror(errno));
268	}
269
270	/* Close the temporary file created above */
271	if (close(fd2) < 0) {
272		tst_brkm(TBROK, cleanup, "close(%s) Failed, errno=%d : %s:",
273			 TEMP_FILE2, errno, strerror(errno));
274	}
275
276	return 0;
277}
278/*
279 * cleanup() - performs all ONE TIME cleanup for this test at
280 *             completion or premature exit.
281 *	       Close the temporary file.
282 *	       Remove the test directory and testfile created in the setup.
283 */
284void
285cleanup()
286{
287	/*
288	 * print timing stats if that option was specified.
289	 * print errno log if that option was specified.
290	 */
291	TEST_CLEANUP;
292
293	/* Close the temporary file(s) created in setup1/setup2*/
294	if (close(fd1) < 0) {
295		tst_brkm(TFAIL, NULL, "close(%s) Failed, errno=%d : %s:",
296			 TEMP_FILE1, errno, strerror(errno));
297	}
298
299	/* Remove tmp dir and all files in it */
300	tst_rmdir();
301
302	/* exit with return code appropriate for results */
303	tst_exit();
304}
305