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      1 /*
      2  * Copyright (c) 2014 Fujitsu Ltd.
      3  * Author: Zeng Linggang <zenglg.jy (at) cn.fujitsu.com>
      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 the
     13  * GNU Library 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 Description:
     22  *  Verify that,
     23  *   1. pselect() fails with -1 return value and sets errno to EBADF
     24  *      if a file descriptor that was already closed.
     25  *   2. pselect() fails with -1 return value and sets errno to EINVAL
     26  *      if nfds was negative.
     27  *   3. pselect() fails with -1 return value and sets errno to EINVAL
     28  *      if the value contained within timeout was invalid.
     29  */
     30 
     31 #include <errno.h>
     32 #include "test.h"
     33 #include "safe_macros.h"
     34 
     35 TCID_DEFINE(pselect02);
     36 
     37 static fd_set read_fds;
     38 static struct timespec time_buf;
     39 
     40 static struct test_case_t {
     41 	int nfds;
     42 	fd_set *readfds;
     43 	struct timespec *timeout;
     44 	int exp_errno;
     45 } test_cases[] = {
     46 	{128, &read_fds, NULL, EBADF},
     47 	{-1, NULL, NULL, EINVAL},
     48 	{128, NULL, &time_buf, EINVAL},
     49 };
     50 
     51 int TST_TOTAL = ARRAY_SIZE(test_cases);
     52 
     53 static void setup(void);
     54 static void cleanup(void);
     55 static void pselect_verify(const struct test_case_t *);
     56 
     57 int main(int argc, char **argv)
     58 {
     59 	int lc, i;
     60 
     61 	tst_parse_opts(argc, argv, NULL, NULL);
     62 
     63 	setup();
     64 
     65 	for (lc = 0; TEST_LOOPING(lc); lc++) {
     66 		tst_count = 0;
     67 		for (i = 0; i < TST_TOTAL; i++)
     68 			pselect_verify(&test_cases[i]);
     69 	}
     70 
     71 	cleanup();
     72 	tst_exit();
     73 }
     74 
     75 static void setup(void)
     76 {
     77 	int fd;
     78 
     79 	tst_sig(NOFORK, DEF_HANDLER, cleanup);
     80 
     81 	TEST_PAUSE;
     82 
     83 	tst_tmpdir();
     84 
     85 	fd = SAFE_OPEN(cleanup, "test_file", O_RDWR | O_CREAT, 0777);
     86 
     87 	FD_ZERO(&read_fds);
     88 	FD_SET(fd, &read_fds);
     89 
     90 	SAFE_CLOSE(cleanup, fd);
     91 
     92 	time_buf.tv_sec = -1;
     93 	time_buf.tv_nsec = 0;
     94 }
     95 
     96 static void pselect_verify(const struct test_case_t *test)
     97 {
     98 	TEST(pselect(test->nfds, test->readfds, NULL, NULL, test->timeout,
     99 	     NULL));
    100 
    101 	if (TEST_RETURN != -1) {
    102 		tst_resm(TFAIL, "pselect() succeeded unexpectedly");
    103 		return;
    104 	}
    105 
    106 	if (TEST_ERRNO == test->exp_errno) {
    107 		tst_resm(TPASS | TTERRNO, "pselect() failed as expected");
    108 	} else {
    109 		tst_resm(TFAIL | TTERRNO,
    110 			 "pselect() failed unexpectedly; expected: %d - %s",
    111 			 test->exp_errno, strerror(test->exp_errno));
    112 	}
    113 }
    114 
    115 static void cleanup(void)
    116 {
    117 	tst_rmdir();
    118 }
    119