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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  * 	chdir01.c
     23  *
     24  * DESCRIPTION
     25  *	Check proper operation of chdir(): tests whether the
     26  *	system call can it change the current, working directory, and find a
     27  *	file there? Will it fail on a non-directory entry ?
     28  *
     29  * ALGORITHM
     30  * 	Make a directory "Testdirectory", and create a file in it. cd into
     31  * 	the directory and read the entry. It should be the file just
     32  * 	created.
     33  *
     34  * USAGE:  <for command-line>
     35  *  chdir01 [-c n] [-e] [-i n] [-I x] [-P x] [-t]
     36  *     where,  -c n : Run n copies concurrently.
     37  *             -e   : Turn on errno logging.
     38  *             -i n : Execute test n times.
     39  *             -I x : Execute test for x seconds.
     40  *             -P x : Pause for x seconds between iterations.
     41  *             -t   : Turn on syscall timing.
     42  *
     43  * HISTORY
     44  *	07/2001 Ported by Wayne Boyer
     45  *
     46  * RESTRICTIONS
     47  * 	None
     48  */
     49 
     50 #include <stdio.h>
     51 #include <sys/types.h>
     52 #include <dirent.h>
     53 #include <errno.h>
     54 #include <string.h>
     55 #include <fcntl.h>
     56 #include<sys/stat.h>
     57 #include "test.h"
     58 #include "safe_macros.h"
     59 
     60 char *TCID = "chdir01";
     61 int TST_TOTAL = 2;
     62 
     63 void setup(void);
     64 void cleanup(void);
     65 static void checknames(char **, int, DIR *);
     66 
     67 char testdir[40] = "";
     68 
     69 int main(int ac, char **av)
     70 {
     71 	DIR *ddir, *opendir();
     72 	int fd;
     73 	char *filname = "chdirtest";
     74 	char *filenames[3];
     75 
     76 	int lc;
     77 
     78 	tst_parse_opts(ac, av, NULL, NULL);
     79 
     80 	setup();
     81 
     82 	for (lc = 0; TEST_LOOPING(lc); lc++) {
     83 
     84 		tst_count = 0;
     85 
     86 		SAFE_CHDIR(cleanup, testdir);
     87 
     88 		fd = SAFE_CREAT(cleanup, filname, 0000);
     89 		SAFE_CLOSE(cleanup, fd);
     90 		if ((ddir = opendir(".")) == NULL)
     91 			tst_brkm(TBROK | TERRNO, cleanup, "opendir(.) failed");
     92 
     93 		filenames[0] = ".";
     94 		filenames[1] = "..";
     95 		filenames[2] = filname;
     96 		checknames(filenames, sizeof(filenames) / sizeof(filenames[0]),
     97 			   ddir);
     98 		closedir(ddir);
     99 
    100 		TEST(chdir(filname));
    101 
    102 		if (TEST_RETURN != -1)
    103 			tst_resm(TFAIL, "call succeeded unexpectedly");
    104 		else if (TEST_ERRNO != ENOTDIR)
    105 			tst_resm(TFAIL | TTERRNO,
    106 				 "failed unexpectedly; wanted ENOTDIR");
    107 		else
    108 			tst_resm(TPASS, "failed as expected with ENOTDIR");
    109 
    110 		SAFE_UNLINK(cleanup, filname);
    111 
    112 		SAFE_CHDIR(cleanup, "..");
    113 
    114 		/* ELOOP */
    115 		SAFE_SYMLINK(cleanup, "test_eloop1", "test_eloop2");
    116 		SAFE_SYMLINK(cleanup, "test_eloop2", "test_eloop1");
    117 
    118 		TEST(chdir("test_eloop1"));
    119 
    120 		if (TEST_RETURN != -1) {
    121 			tst_resm(TFAIL, "call succeeded unexpectedly");
    122 		} else if (TEST_ERRNO != ELOOP) {
    123 			tst_resm(TFAIL | TTERRNO,
    124 				 "failed unexpectedly; wanted ELOOP");
    125 		} else {
    126 			tst_resm(TPASS, "failed as expected with ELOOP");
    127 		}
    128 
    129 		SAFE_UNLINK(cleanup, "test_eloop1");
    130 		SAFE_UNLINK(cleanup, "test_eloop2");
    131 	}
    132 	cleanup();
    133 
    134 	tst_exit();
    135 
    136 }
    137 
    138 void setup(void)
    139 {
    140 
    141 	tst_sig(NOFORK, DEF_HANDLER, cleanup);
    142 
    143 	umask(0);
    144 
    145 	TEST_PAUSE;
    146 
    147 	tst_tmpdir();
    148 
    149 	sprintf(testdir, "Testdir.%d", getpid());
    150 
    151 	SAFE_MKDIR(cleanup, testdir, 0700);
    152 }
    153 
    154 void cleanup(void)
    155 {
    156 	tst_rmdir();
    157 }
    158 
    159 void checknames(char **pfilnames, int fnamecount, DIR * ddir)
    160 {
    161 	struct dirent *dir;
    162 	int i, found;
    163 
    164 	found = 0;
    165 	while ((dir = readdir(ddir)) != NULL) {
    166 		for (i = 0; i < fnamecount; i++) {
    167 			/*
    168 			 * if dir->d_name is not null terminated it is a bug
    169 			 * anyway
    170 			 */
    171 			if (strcmp(pfilnames[i], dir->d_name) == 0) {
    172 				tst_resm(TINFO, "Found file %s", dir->d_name);
    173 				found++;
    174 			}
    175 		}
    176 	}
    177 	if (found < fnamecount) {
    178 		tst_brkm(TFAIL, cleanup,
    179 			 "Some files do not exist, but they must exist");
    180 	}
    181 }
    182