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      1 /*
      2  * Copyright (c) International Business Machines  Corp., 2001
      3  *  07/2001 Ported by Wayne Boyer
      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 Foundation,
     17  * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
     18  */
     19 
     20 /*
     21  * DESCRIPTION
     22  *	Test that closing a regular file and a pipe works correctly
     23  */
     24 
     25 #include <stdio.h>
     26 #include <errno.h>
     27 #include <fcntl.h>
     28 #include <sys/stat.h>
     29 #include "test.h"
     30 #include "safe_macros.h"
     31 
     32 void cleanup(void);
     33 void setup(void);
     34 
     35 char *TCID = "close01";
     36 int TST_TOTAL = 2;
     37 
     38 char fname[40] = "";
     39 
     40 int fild, newfd, pipefildes[2];
     41 
     42 struct test_case_t {
     43 	int *fd;
     44 	char *type;
     45 } TC[] = {
     46 	/* file descriptor for a regular file */
     47 	{
     48 	&newfd, "file"},
     49 	    /* file descriptor for a pipe */
     50 	{
     51 	&pipefildes[0], "pipe"}
     52 };
     53 
     54 int main(int ac, char **av)
     55 {
     56 
     57 	int i;
     58 	int lc;
     59 
     60 	tst_parse_opts(ac, av, NULL, NULL);
     61 
     62 	setup();
     63 
     64 	for (lc = 0; TEST_LOOPING(lc); lc++) {
     65 
     66 		tst_count = 0;
     67 
     68 		if ((fild = creat(fname, 0777)) == -1)
     69 			tst_brkm(TBROK | TERRNO, cleanup, "can't open file %s",
     70 				 fname);
     71 
     72 		if ((newfd = dup(fild)) == -1)
     73 			tst_brkm(TBROK | TERRNO, cleanup,
     74 				 "can't dup the file des");
     75 
     76 		SAFE_PIPE(cleanup, pipefildes);
     77 
     78 		for (i = 0; i < TST_TOTAL; i++) {
     79 
     80 			TEST(close(*TC[i].fd));
     81 
     82 			if (TEST_RETURN == -1) {
     83 				tst_resm(TFAIL, "call failed unexpectedly");
     84 				continue;
     85 			}
     86 
     87 			if (close(*TC[i].fd) == -1) {
     88 				tst_resm(TPASS, "%s appears closed",
     89 					 TC[i].type);
     90 			} else {
     91 				tst_resm(TFAIL, "%s close succeeded on"
     92 					 "second attempt", TC[i].type);
     93 			}
     94 		}
     95 
     96 	}
     97 
     98 	cleanup();
     99 	tst_exit();
    100 }
    101 
    102 void setup(void)
    103 {
    104 	int mypid;
    105 
    106 	tst_sig(FORK, DEF_HANDLER, cleanup);
    107 
    108 	umask(0);
    109 
    110 	TEST_PAUSE;
    111 
    112 	tst_tmpdir();
    113 
    114 	mypid = getpid();
    115 	sprintf(fname, "fname.%d", mypid);
    116 }
    117 
    118 void cleanup(void)
    119 {
    120 	close(fild);
    121 
    122 	tst_rmdir();
    123 
    124 }
    125