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      1 /*
      2  * Copyright (c) 2014 Fujitsu Ltd.
      3  * Author: Zeng Linggang <zenglg.jy (at) cn.fujitsu.com>
      4  *
      5  * This program is free software; you can redistribute it and/or modify it
      6  * under the terms of version 2 of the GNU General Public License as
      7  * published by the Free Software Foundation.
      8  *
      9  * This program is distributed in the hope that it would be useful, but
     10  * WITHOUT ANY WARRANTY; without even the implied warranty of
     11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
     12  *
     13  * You should have received a copy of the GNU General Public License along
     14  * with this program; if not, write the Free Software Foundation, Inc.,
     15  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
     16  */
     17 /*
     18  * Test Description:
     19  *  Verify that,
     20  *   1. path is NULL, EFAULT would return.
     21  *   2. Too many symbolic links were encountered in translating path,
     22  *	ELOOP would return.
     23  *   3. path is too long, ENAMETOOLONG would return.
     24  *   4. The file referred to by path does not exist, ENOENT would return.
     25  *   5. A component of the path prefix of path is not a directory,
     26  *	ENOENT would return.
     27  */
     28 
     29 #include <errno.h>
     30 #include <sys/statvfs.h>
     31 #include <sys/mman.h>
     32 
     33 #include "test.h"
     34 #include "safe_macros.h"
     35 
     36 #define TEST_SYMLINK	"statvfs_symlink"
     37 #define TEST_FILE	"statvfs_file"
     38 
     39 char *TCID = "statvfs02";
     40 
     41 static struct statvfs buf;
     42 static char nametoolong[PATH_MAX+2];
     43 static void setup(void);
     44 static void cleanup(void);
     45 
     46 static struct test_case_t {
     47 	char *path;
     48 	struct statvfs *buf;
     49 	int exp_errno;
     50 } test_cases[] = {
     51 	{NULL, &buf, EFAULT},
     52 	{TEST_SYMLINK, &buf, ELOOP},
     53 	{nametoolong, &buf, ENAMETOOLONG},
     54 	{"filenoexist", &buf, ENOENT},
     55 	{"statvfs_file/test", &buf, ENOTDIR},
     56 };
     57 
     58 int TST_TOTAL = ARRAY_SIZE(test_cases);
     59 static void statvfs_verify(const struct test_case_t *);
     60 
     61 int main(int argc, char **argv)
     62 {
     63 	int i, lc;
     64 
     65 	tst_parse_opts(argc, argv, NULL, NULL);
     66 
     67 	setup();
     68 
     69 	for (lc = 0; TEST_LOOPING(lc); lc++) {
     70 		tst_count = 0;
     71 		for (i = 0; i < TST_TOTAL; i++)
     72 			statvfs_verify(&test_cases[i]);
     73 	}
     74 
     75 	cleanup();
     76 	tst_exit();
     77 }
     78 
     79 static void setup(void)
     80 {
     81 	tst_sig(NOFORK, DEF_HANDLER, cleanup);
     82 
     83 	TEST_PAUSE;
     84 
     85 	tst_tmpdir();
     86 
     87 	SAFE_SYMLINK(cleanup, TEST_SYMLINK, "statfs_symlink_2");
     88 	SAFE_SYMLINK(cleanup, "statfs_symlink_2", TEST_SYMLINK);
     89 
     90 	memset(nametoolong, 'a', PATH_MAX+1);
     91 
     92 	SAFE_TOUCH(cleanup, TEST_FILE, 0644, NULL);
     93 
     94 	test_cases[0].path = SAFE_MMAP(cleanup, NULL, 1, PROT_NONE,
     95 	                               MAP_PRIVATE | MAP_ANONYMOUS, 0, 0);
     96 }
     97 
     98 static void statvfs_verify(const struct test_case_t *test)
     99 {
    100 	TEST(statvfs(test->path, test->buf));
    101 
    102 	if (TEST_RETURN != -1) {
    103 		tst_resm(TFAIL, "statvfs() succeeded unexpectedly");
    104 		return;
    105 	}
    106 
    107 	if (TEST_ERRNO == test->exp_errno) {
    108 		tst_resm(TPASS | TTERRNO, "statvfs() failed as expected");
    109 	} else {
    110 		tst_resm(TFAIL | TTERRNO,
    111 			 "statvfs() failed unexpectedly; expected: %d - %s",
    112 			 test->exp_errno, strerror(test->exp_errno));
    113 	}
    114 }
    115 
    116 static void cleanup(void)
    117 {
    118 	tst_rmdir();
    119 }
    120