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      1 /*
      2  * Copyright (c) Wipro Technologies Ltd, 2002.  All Rights Reserved.
      3  *
      4  * This program is free software; you can redistribute it and/or modify it
      5  * under the terms of version 2 of the GNU General Public License as
      6  * published by the Free Software Foundation.
      7  *
      8  * This program is distributed in the hope that it would be useful, but
      9  * WITHOUT ANY WARRANTY; without even the implied warranty of
     10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
     11  *
     12  * You should have received a copy of the GNU General Public License along
     13  * with this program; if not, write the Free Software Foundation, Inc.,
     14  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
     15  *
     16  */
     17 
     18 /*
     19  * Check that swapoff() succeeds.
     20  */
     21 
     22 #include <unistd.h>
     23 #include "test.h"
     24 #include <errno.h>
     25 #include <stdlib.h>
     26 #include "config.h"
     27 #include "lapi/syscalls.h"
     28 
     29 static void setup(void);
     30 static void cleanup(void);
     31 static void verify_swapoff(void);
     32 
     33 char *TCID = "swapoff01";
     34 int TST_TOTAL = 1;
     35 
     36 static long fs_type;
     37 
     38 int main(int ac, char **av)
     39 {
     40 	int lc;
     41 
     42 	tst_parse_opts(ac, av, NULL, NULL);
     43 
     44 	setup();
     45 
     46 	for (lc = 0; TEST_LOOPING(lc); lc++) {
     47 		tst_count = 0;
     48 		verify_swapoff();
     49 	}
     50 
     51 	cleanup();
     52 	tst_exit();
     53 }
     54 
     55 static void verify_swapoff(void)
     56 {
     57 	if (ltp_syscall(__NR_swapon, "./swapfile01", 0) != 0) {
     58 		if (fs_type == TST_BTRFS_MAGIC && errno == EINVAL) {
     59 			tst_brkm(TCONF, cleanup,
     60 			         "Swapfiles on BTRFS are not implemented");
     61 		}
     62 
     63 		tst_resm(TBROK, "Failed to turn on the swap file"
     64 			 ", skipping test iteration");
     65 		return;
     66 	}
     67 
     68 	TEST(ltp_syscall(__NR_swapoff, "./swapfile01"));
     69 
     70 	if (TEST_RETURN == -1) {
     71 		tst_resm(TFAIL | TTERRNO, "Failed to turn off swapfile,"
     72 		         " system reboot after execution of LTP "
     73 			 "test suite is recommended.");
     74 	} else {
     75 		tst_resm(TPASS, "Succeeded to turn off swapfile");
     76 	}
     77 }
     78 
     79 static void setup(void)
     80 {
     81 	tst_sig(FORK, DEF_HANDLER, cleanup);
     82 
     83 	tst_require_root();
     84 
     85 	TEST_PAUSE;
     86 
     87 	tst_tmpdir();
     88 
     89 	switch ((fs_type = tst_fs_type(cleanup, "."))) {
     90 	case TST_NFS_MAGIC:
     91 	case TST_TMPFS_MAGIC:
     92 		tst_brkm(TCONF, cleanup,
     93 			 "Cannot do swapoff on a file on %s filesystem",
     94 			 tst_fs_type_name(fs_type));
     95 	break;
     96 	}
     97 
     98 	if (!tst_fs_has_free(NULL, ".", 64, TST_MB)) {
     99 		tst_brkm(TBROK, cleanup,
    100 			 "Insufficient disk space to create swap file");
    101 	}
    102 
    103 	if (tst_fill_file("swapfile01", 0x00, 1024, 65536))
    104 		tst_brkm(TBROK, cleanup, "Failed to create file for swap");
    105 
    106 	if (system("mkswap swapfile01 > tmpfile 2>&1") != 0)
    107 		tst_brkm(TBROK, cleanup, "Failed to make swapfile");
    108 }
    109 
    110 static void cleanup(void)
    111 {
    112 	tst_rmdir();
    113 }
    114