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      1 /*
      2  * Test Name: fstat03
      3  *
      4  * Test Description:
      5  *   Verify that, fstat(2) returns -1 and sets errno to EBADF if the file
      6  *   pointed to by file descriptor is not valid.
      7  *
      8  * Expected Result:
      9  *  fstat() should fail with return value -1 and set expected errno.
     10  *
     11  * Algorithm:
     12  *  Setup:
     13  *   Setup signal handling.
     14  *   Create temporary directory.
     15  *   Pause for SIGUSR1 if option specified.
     16  *
     17  *  Test:
     18  *   Loop if the proper options are given.
     19  *   Execute system call
     20  *   Check return code, if system call failed (return=-1)
     21  *	if errno set == expected errno
     22  *		Issue sys call fails with expected return value and errno.
     23  *	Otherwise,
     24  *		Issue sys call fails with unexpected errno.
     25  *   Otherwise,
     26  *	Issue sys call returns unexpected value.
     27  *
     28  *  Cleanup:
     29  *   Print errno log and/or timing stats if options given
     30  *   Delete the temporary directory(s)/file(s) created.
     31  *
     32  * Usage:  <for command-line>
     33  *  fstat03 [-c n] [-e] [-i n] [-I x] [-P x] [-t]
     34  *     where,  -c n : Run n copies concurrently.
     35  *             -e   : Turn on errno logging.
     36  *	       -i n : Execute test n times.
     37  *	       -I x : Execute test for x seconds.
     38  *	       -P x : Pause for x seconds between iterations.
     39  *	       -t   : Turn on syscall timing.
     40  *
     41  * HISTORY
     42  *	07/2001 Ported by Wayne Boyer
     43  *
     44  * RESTRICTIONS:
     45  *  This test should be executed by 'non-super-user' only.
     46  *
     47  */
     48 
     49 #include <stdio.h>
     50 #include <stdlib.h>
     51 #include <unistd.h>
     52 #include <fcntl.h>
     53 #include <errno.h>
     54 #include <string.h>
     55 #include <signal.h>
     56 #include <sys/types.h>
     57 #include <sys/stat.h>
     58 
     59 #include "test.h"
     60 #include "safe_macros.h"
     61 
     62 #define FILE_MODE	S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH
     63 #define TEST_FILE	"testfile"
     64 
     65 char *TCID = "fstat03";
     66 int TST_TOTAL = 1;
     67 
     68 int fildes;			/* testfile descriptor */
     69 
     70 void setup();			/* Main setup function for the tests */
     71 void cleanup();			/* cleanup function for the test */
     72 
     73 int main(int ac, char **av)
     74 {
     75 	struct stat stat_buf;	/* stat structure buffer */
     76 	int lc;
     77 
     78 	tst_parse_opts(ac, av, NULL, NULL);
     79 
     80 	/*
     81 	 * Invoke setup function to create a testfile under temporary
     82 	 * directory.
     83 	 */
     84 	setup();
     85 
     86 	for (lc = 0; TEST_LOOPING(lc); lc++) {
     87 
     88 		tst_count = 0;
     89 		/*
     90 		 * Call fstat(2) to get the status information
     91 		 * of a closed testfile pointed to by 'fd'.
     92 		 * verify that fstat fails with -1 return value and
     93 		 * sets appropriate errno.
     94 		 */
     95 		TEST(fstat(fildes, &stat_buf));
     96 
     97 		/* Check return code from fstat(2) */
     98 		if (TEST_RETURN == -1) {
     99 			if (TEST_ERRNO == EBADF) {
    100 				tst_resm(TPASS,
    101 					 "fstat() fails with expected error EBADF");
    102 			} else {
    103 				tst_resm(TFAIL | TTERRNO,
    104 					 "fstat() did not fail with EBADF");
    105 			}
    106 		} else {
    107 			tst_resm(TFAIL, "fstat() returned %ld, expected -1",
    108 				 TEST_RETURN);
    109 		}
    110 	}
    111 
    112 	/*
    113 	 * Invoke cleanup() to delete the test directory/file(s) created
    114 	 * in the setup().
    115 	 */
    116 	cleanup();
    117 
    118 	tst_exit();
    119 }
    120 
    121 /*
    122  * void
    123  * setup(void) - performs all ONE TIME setup for this test.
    124  *	Exit the test program on receipt of unexpected signals.
    125  *	Create a temporary directory and change directory to it.
    126  *      Create a testfile under temporary directory.
    127  *      Close the testfile.
    128  */
    129 void setup(void)
    130 {
    131 	/* Capture unexpected signals */
    132 	tst_sig(NOFORK, DEF_HANDLER, cleanup);
    133 
    134 	TEST_PAUSE;
    135 
    136 	/* Make a temp dir and cd to it */
    137 	tst_tmpdir();
    138 
    139 	/* Create a testfile under temporary directory */
    140 	fildes = SAFE_OPEN(cleanup, TEST_FILE, O_RDWR | O_CREAT, 0666);
    141 
    142 	SAFE_CLOSE(cleanup, fildes);
    143 }
    144 
    145 /*
    146  * void
    147  * cleanup() - Performs all ONE TIME cleanup for this test at
    148  *             completion or premature exit.
    149  *	Print test timing stats and errno log if test executed with options.
    150  *	Close the testfile if still opened.
    151  *	Remove temporary directory and sub-directories/files under it
    152  *	created during setup().
    153  *	Exit the test program with normal exit code.
    154  */
    155 void cleanup(void)
    156 {
    157 
    158 	tst_rmdir();
    159 
    160 }
    161