Home | History | Annotate | Download | only in close 
      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 
     31 void cleanup(void);
     32 void setup(void);
     33 
     34 char *TCID = "close01";
     35 int TST_TOTAL = 2;
     36 
     37 char fname[40] = "";
     38 
     39 int fild, newfd, pipefildes[2];
     40 
     41 struct test_case_t {
     42 	int *fd;
     43 	char *type;
     44 } TC[] = {
     45 	/* file descriptor for a regular file */
     46 	{
     47 	&newfd, "file"},
     48 	    /* file descriptor for a pipe */
     49 	{
     50 	&pipefildes[0], "pipe"}
     51 };
     52 
     53 int main(int ac, char **av)
     54 {
     55 
     56 	int i;
     57 	int lc;
     58 
     59 	tst_parse_opts(ac, av, NULL, NULL);
     60 
     61 	setup();
     62 
     63 	for (lc = 0; TEST_LOOPING(lc); lc++) {
     64 
     65 		tst_count = 0;
     66 
     67 		if ((fild = creat(fname, 0777)) == -1)
     68 			tst_brkm(TBROK | TERRNO, cleanup, "can't open file %s",
     69 				 fname);
     70 
     71 		if ((newfd = dup(fild)) == -1)
     72 			tst_brkm(TBROK | TERRNO, cleanup,
     73 				 "can't dup the file des");
     74 
     75 		if (pipe(pipefildes) == -1) {
     76 			tst_brkm(TBROK | TERRNO, cleanup, "can't open pipe");
     77 		}
     78 
     79 		for (i = 0; i < TST_TOTAL; i++) {
     80 
     81 			TEST(close(*TC[i].fd));
     82 
     83 			if (TEST_RETURN == -1) {
     84 				tst_resm(TFAIL, "call failed unexpectedly");
     85 				continue;
     86 			}
     87 
     88 			if (close(*TC[i].fd) == -1) {
     89 				tst_resm(TPASS, "%s appears closed",
     90 					 TC[i].type);
     91 			} else {
     92 				tst_resm(TFAIL, "%s close succeeded on"
     93 					 "second attempt", TC[i].type);
     94 			}
     95 		}
     96 
     97 	}
     98 
     99 	cleanup();
    100 	tst_exit();
    101 }
    102 
    103 void setup(void)
    104 {
    105 	int mypid;
    106 
    107 	tst_sig(FORK, DEF_HANDLER, cleanup);
    108 
    109 	umask(0);
    110 
    111 	TEST_PAUSE;
    112 
    113 	tst_tmpdir();
    114 
    115 	mypid = getpid();
    116 	sprintf(fname, "fname.%d", mypid);
    117 }
    118 
    119 void cleanup(void)
    120 {
    121 	close(fild);
    122 
    123 	tst_rmdir();
    124 
    125 }
    126