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      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  * NAME
     22  *	dup201.c
     23  *
     24  * DESCRIPTION
     25  *	Negative tests for dup2() with bad fd (EBADF)
     26  *
     27  * ALGORITHM
     28  * 	Setup:
     29  *	a.	Setup signal handling.
     30  *	b.	Pause for SIGUSR1 if option specified.
     31  *
     32  * 	Test:
     33  *	a.	Loop if the proper options are given.
     34  *	b.	Loop through the test cases
     35  * 	c.	Execute dup2() system call
     36  *	d.	Check return code, if system call failed (return=-1), test
     37  *		for EBADF.
     38  *
     39  * 	Cleanup:
     40  * 	a.	Print errno log and/or timing stats if options given
     41  *
     42  * USAGE:  <for command-line>
     43  *  dup201 [-c n] [-e] [-i n] [-I x] [-P x] [-t]
     44  *     where,  -c n : Run n copies concurrently.
     45  *             -e   : Turn on errno logging.
     46  *             -i n : Execute test n times.
     47  *             -I x : Execute test for x seconds.
     48  *             -P x : Pause for x seconds between iterations.
     49  *             -t   : Turn on syscall timing.
     50  *
     51  * HISTORY
     52  *	07/2001 Ported by Wayne Boyer
     53  *	01/2002 Removed EMFILE test - Paul Larson
     54  *
     55  * RESTRICTIONS
     56  * 	NONE
     57  */
     58 
     59 #include <sys/types.h>
     60 #include <fcntl.h>
     61 #include <errno.h>
     62 #include <sys/time.h>
     63 #include <sys/resource.h>
     64 #include <unistd.h>
     65 #include <signal.h>
     66 #include "test.h"
     67 
     68 void setup(void);
     69 void cleanup(void);
     70 
     71 char *TCID = "dup201";
     72 int TST_TOTAL = 4;
     73 
     74 int maxfd;
     75 int goodfd = 5;
     76 int badfd = -1;
     77 int mystdout = 0;
     78 int fd, fd1;
     79 int mypid;
     80 char fname[20];
     81 
     82 struct test_case_t {
     83 	int *ofd;
     84 	int *nfd;
     85 	int error;
     86 	void (*setupfunc) ();
     87 } TC[] = {
     88 	/* First fd argument is less than 0 - EBADF */
     89 	{
     90 	&badfd, &goodfd, EBADF, NULL},
     91 	    /* First fd argument is getdtablesize() - EBADF */
     92 	{
     93 	&maxfd, &goodfd, EBADF, NULL},
     94 	    /* Second fd argument is less than 0 - EBADF */
     95 	{
     96 	&mystdout, &badfd, EBADF, NULL},
     97 	    /* Second fd argument is getdtablesize() - EBADF */
     98 	{
     99 &mystdout, &maxfd, EBADF, NULL},};
    100 
    101 int main(int ac, char **av)
    102 {
    103 	int lc;
    104 	int i, j;
    105 
    106 	tst_parse_opts(ac, av, NULL, NULL);
    107 
    108 	setup();
    109 
    110 	for (lc = 0; TEST_LOOPING(lc); lc++) {
    111 
    112 		tst_count = 0;
    113 
    114 		/* loop through the test cases */
    115 
    116 		for (i = 0; i < TST_TOTAL; i++) {
    117 
    118 			/* call the test case setup routine if necessary */
    119 			if (TC[i].setupfunc != NULL)
    120 				(*TC[i].setupfunc) ();
    121 
    122 			TEST(dup2(*TC[i].ofd, *TC[i].nfd));
    123 
    124 			if (TEST_RETURN != -1) {
    125 				tst_resm(TFAIL, "call succeeded unexpectedly");
    126 				continue;
    127 			}
    128 
    129 			if (TEST_ERRNO == TC[i].error) {
    130 				tst_resm(TPASS,
    131 					 "failed as expected - errno = %d : %s",
    132 					 TEST_ERRNO, strerror(TEST_ERRNO));
    133 			} else {
    134 				tst_resm(TFAIL | TTERRNO,
    135 					 "failed unexpectedly; "
    136 					 "expected %d: %s", TC[i].error,
    137 					 strerror(TC[i].error));
    138 			}
    139 		}
    140 		/* cleanup things in case we are looping */
    141 		for (j = fd1; j < maxfd; j++) {
    142 			sprintf(fname, "dup201.%d.%d", j, mypid);
    143 			(void)close(j);
    144 			(void)unlink(fname);
    145 		}
    146 	}
    147 	cleanup();
    148 
    149 	tst_exit();
    150 }
    151 
    152 /*
    153  * setup() - performs all ONE TIME setup for this test.
    154  */
    155 void setup(void)
    156 {
    157 
    158 	tst_sig(NOFORK, DEF_HANDLER, cleanup);
    159 
    160 	TEST_PAUSE;
    161 
    162 	tst_tmpdir();
    163 
    164 	/* get some test specific values */
    165 	maxfd = getdtablesize();
    166 	mypid = getpid();
    167 }
    168 
    169 /*
    170  * cleanup() - performs all ONE TIME cleanup for this test at
    171  *	       completion or premature exit.
    172  */
    173 void cleanup(void)
    174 {
    175 
    176 	tst_rmdir();
    177 }
    178