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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  *	This test will verify the mkdir(2) syscall basic functionality
     23  */
     24 
     25 #include <errno.h>
     26 #include <string.h>
     27 #include <signal.h>
     28 #include <sys/stat.h>
     29 #include <sys/types.h>
     30 #include <fcntl.h>
     31 #include <unistd.h>
     32 #include <pwd.h>
     33 #include "test.h"
     34 #include "safe_macros.h"
     35 
     36 void setup();
     37 void cleanup();
     38 
     39 #define PERMS		0777
     40 
     41 char *TCID = "mkdir05";
     42 int TST_TOTAL = 1;
     43 
     44 char nobody_uid[] = "nobody";
     45 struct passwd *ltpuser;
     46 
     47 char tstdir1[100];
     48 
     49 int main(int ac, char **av)
     50 {
     51 	int lc;
     52 	struct stat buf;
     53 
     54 	/*
     55 	 * parse standard options
     56 	 */
     57 	tst_parse_opts(ac, av, NULL, NULL);
     58 
     59 	/*
     60 	 * perform global setup for test
     61 	 */
     62 	setup();
     63 
     64 	/*
     65 	 * check looping state if -i option given
     66 	 */
     67 	for (lc = 0; TEST_LOOPING(lc); lc++) {
     68 
     69 		tst_count = 0;
     70 
     71 		/*
     72 		 * TEST mkdir() base functionality
     73 		 */
     74 
     75 		/* Initialize the test directory name */
     76 		sprintf(tstdir1, "tstdir1.%d", getpid());
     77 
     78 		/* Call mkdir(2) using the TEST macro */
     79 		TEST(mkdir(tstdir1, PERMS));
     80 
     81 		if (TEST_RETURN == -1) {
     82 			tst_resm(TFAIL, "mkdir(%s, %#o) Failed",
     83 				 tstdir1, PERMS);
     84 			continue;
     85 		}
     86 
     87 		SAFE_STAT(cleanup, tstdir1, &buf);
     88 		/* check the owner */
     89 		if (buf.st_uid != geteuid()) {
     90 			tst_resm(TFAIL, "mkdir() FAILED to set owner ID"
     91 				 " as process's effective ID");
     92 			continue;
     93 		}
     94 		/* check the group ID */
     95 		if (buf.st_gid != getegid()) {
     96 			tst_resm(TFAIL, "mkdir() failed to set group ID"
     97 				 " as the process's group ID");
     98 			continue;
     99 		}
    100 		tst_resm(TPASS, "mkdir() functionality is correct");
    101 
    102 		/* clean up things in case we are looping */
    103 		SAFE_RMDIR(cleanup, tstdir1);
    104 
    105 	}
    106 
    107 	cleanup();
    108 	tst_exit();
    109 }
    110 
    111 /*
    112  * setup() - performs all ONE TIME setup for this test.
    113  */
    114 void setup(void)
    115 {
    116 	tst_require_root();
    117 
    118 	ltpuser = getpwnam(nobody_uid);
    119 	if (setuid(ltpuser->pw_uid) == -1) {
    120 		tst_resm(TINFO, "setuid failed to "
    121 			 "to set the effective uid to %d", ltpuser->pw_uid);
    122 		perror("setuid");
    123 	}
    124 
    125 	tst_sig(FORK, DEF_HANDLER, cleanup);
    126 
    127 	TEST_PAUSE;
    128 
    129 	/* Create a temporary directory and make it current. */
    130 	tst_tmpdir();
    131 }
    132 
    133 /*
    134  * cleanup() - performs all ONE TIME cleanup for this test at
    135  *             completion or premature exit.
    136  */
    137 void cleanup(void)
    138 {
    139 
    140 	/*
    141 	 * Remove the temporary directory.
    142 	 */
    143 	tst_rmdir();
    144 
    145 	/*
    146 	 * Exit with return code appropriate for results.
    147 	 */
    148 
    149 }
    150