| /* |
| * Copyright (c) Wipro Technologies Ltd, 2002. All Rights Reserved. |
| * |
| * This program is free software; you can redistribute it and/or modify it |
| * under the terms of version 2 of the GNU General Public License as |
| * published by the Free Software Foundation. |
| * |
| * This program is distributed in the hope that it would be useful, but |
| * WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. |
| * |
| * You should have received a copy of the GNU General Public License along |
| * with this program; if not, write the Free Software Foundation, Inc., 59 |
| * Temple Place - Suite 330, Boston MA 02111-1307, USA. |
| * |
| */ |
| /****************************************************************************** |
| * |
| * TEST IDENTIFIER : umount02 |
| * |
| * EXECUTED BY : root / superuser |
| * |
| * TEST TITLE : Test for checking basic error conditions for umount(2) |
| * |
| * TEST CASE TOTAL : 5 |
| * |
| * AUTHOR : Nirmala Devi Dhanasekar <nirmala.devi@wipro.com> |
| * |
| * SIGNALS |
| * Uses SIGUSR1 to pause before test if option set. |
| * (See the parse_opts(3) man page). |
| * |
| * DESCRIPTION |
| * Check for basic errors returned by umount(2) system call. |
| * |
| * Verify that umount(2) returns -1 and sets errno to |
| * |
| * 1) EBUSY if it cannot be umounted, because dir is still busy. |
| * 2) EFAULT if specialfile or device file points to invalid address space. |
| * 3) ENOENT if pathname was empty or has a nonexistent component. |
| * 4) EINVAL if specialfile or device is invalid or not a mount point. |
| * 5) ENAMETOOLONG if pathname was longer than MAXPATHLEN. |
| * |
| * Setup: |
| * Setup signal handling. |
| * Create a mount point. |
| * Pause for SIGUSR1 if option specified. |
| * |
| * Test: |
| * Loop if the proper options are given. |
| * Do necessary setup for each test. |
| * Execute system call |
| * Check return code, if system call failed and errno == expected errno |
| * Issue sys call passed with expected return value and errno. |
| * Otherwise, |
| * Issue sys call failed to produce expected error. |
| * Do cleanup for each test. |
| * |
| * Cleanup: |
| * Print errno log and/or timing stats if options given |
| * Delete the temporary directory(s)/file(s) created. |
| * |
| * USAGE: <for command-line> |
| * umount02 [-T type] -D device [-e] [-i n] [-I x] [-p x] [-t] |
| * where, -T type : specifies the type of filesystem to |
| * be mounted. Default ext2. |
| * -D device : device to be mounted. |
| * -e : Turn on errno logging. |
| * -i n : Execute test n times. |
| * -I x : Execute test for x seconds. |
| * -p : Pause for SIGUSR1 before starting |
| * -P x : Pause for x seconds between iterations. |
| * -t : Turn on syscall timing. |
| * |
| * RESTRICTIONS |
| * test must be run with the -D option |
| * test doesn't support -c option to run it in parallel, as mount |
| * syscall is not supposed to run in parallel. |
| *****************************************************************************/ |
| |
| #include <errno.h> |
| #include <sys/mount.h> |
| #include <sys/types.h> |
| #include <sys/stat.h> |
| #include <sys/fcntl.h> |
| #include <pwd.h> |
| #include "test.h" |
| #include "usctest.h" |
| |
| static void help(void); |
| static void setup(void); |
| static void cleanup(void); |
| |
| static int setup_test(int, int); |
| static int cleanup_test(int); |
| |
| char *TCID = "umount02"; /* Test program identifier. */ |
| extern int Tst_count; /* TestCase counter for tst_* routine */ |
| |
| #define DEFAULT_FSTYPE "ext2" |
| #define FSTYPE_LEN 20 |
| #define DIR_MODE S_IRWXU | S_IRWXG | S_IROTH | S_IXOTH |
| #define FILE_MODE S_IRWXU | S_IRWXG | S_IRWXO |
| |
| static char *Einval = "nonexixstent"; |
| static char Longpathname[PATH_MAX + 2]; |
| static char Path[PATH_MAX]; |
| static char *Type; |
| static char *Fstype; |
| static char *Device; |
| static char *Mntpoint; |
| static unsigned long Flag; |
| |
| static int fd; |
| static char mntpoint[PATH_MAX]; |
| static char *fstype; |
| static char *device; |
| static int Tflag = 0; |
| static int Dflag = 0; |
| |
| static struct test_case_t { |
| char *err_desc; /* error description */ |
| int exp_errno; /* Expected error no */ |
| char *exp_errval; /* Expected error value string */ |
| } testcases[] = { |
| { |
| "Already mounted/busy", EBUSY, "EBUSY"}, { |
| "Invalid address space", EFAULT, "EFAULT"}, { |
| "Directory not found", ENOENT, "ENOENT"}, { |
| "Invalid device ", EINVAL, "EINVAL"}, { |
| "Pathname too long", ENAMETOOLONG, "ENAMETOOLONG"} |
| }; |
| |
| /* Total number of test cases. */ |
| int TST_TOTAL = sizeof(testcases) / sizeof(testcases[0]); |
| |
| static int exp_enos[] = { EBUSY, EINVAL, EFAULT, ENAMETOOLONG, ENOENT, 0 }; |
| |
| static option_t options[] = { /* options supported by umount02 test */ |
| {"T:", &Tflag, &fstype}, /* -T type of filesystem */ |
| {"D:", &Dflag, &device}, /* -D device used for mounting */ |
| {NULL, NULL, NULL} |
| }; |
| |
| int main(int ac, char **av) |
| { |
| int lc, i; /* loop counter */ |
| char *msg; /* message returned from parse_opts */ |
| |
| /* parse standard options */ |
| if ((msg = parse_opts(ac, av, options, &help)) != NULL) { |
| tst_brkm(TBROK, NULL, "OPTION PARSING ERROR - %s", msg); |
| tst_exit(); |
| } |
| |
| /* Check for mandatory option of the testcase */ |
| if (Dflag == 0) { |
| tst_brkm(TBROK, NULL, "You must specifiy the device used for " |
| " mounting with -D option, Run '%s -h' for option " |
| " information.", TCID); |
| tst_exit(); |
| } |
| |
| Type = (char *)malloc(FSTYPE_LEN); |
| if (!Type) { |
| tst_brkm(TBROK, NULL, "malloc - alloc of %d failed", |
| FSTYPE_LEN); |
| tst_exit(); |
| } |
| |
| if (Tflag == 1) { |
| strncpy(Type, fstype, |
| (FSTYPE_LEN < |
| (strlen(fstype)+1)) ? FSTYPE_LEN : (strlen(fstype)+1)); |
| } else { |
| strncpy(Type, DEFAULT_FSTYPE, strlen(DEFAULT_FSTYPE)+1); |
| } |
| |
| if (STD_COPIES != 1) { |
| tst_resm(TINFO, "-c option has no effect for this testcase - " |
| "%s doesn't allow running more than one instance " |
| "at a time", TCID); |
| STD_COPIES = 1; |
| } |
| |
| /* perform global setup for test */ |
| setup(); |
| |
| /* check looping state if -i option given */ |
| for (lc = 0; TEST_LOOPING(lc); lc++) { |
| |
| /* reset Tst_count in case we are looping. */ |
| Tst_count = 0; |
| |
| for (i = 0; i < TST_TOTAL; ++i) { |
| |
| if (setup_test(i, lc)) { |
| tst_resm(TWARN, "Not able to test mount(2) for " |
| "error %s as setup failed", |
| testcases[i].exp_errval); |
| continue; |
| } |
| |
| /* Call umount(2) to test different test conditions. |
| * verify that it fails with -1 return value and |
| * sets appropriate errno.*/ |
| |
| TEST(umount(Mntpoint)); |
| |
| /* check return code */ |
| if ((TEST_RETURN == -1) && |
| (TEST_ERRNO == testcases[i].exp_errno)) { |
| tst_resm(TPASS, "umount(2) expected failure; " |
| "Got errno - %s : %s", |
| testcases[i].exp_errval, |
| testcases[i].err_desc); |
| } else { |
| tst_resm(TFAIL, "umount(2) failed to produce " |
| "expected error; %d, errno:%s got %d", |
| testcases[i].exp_errno, |
| testcases[i].exp_errval, TEST_ERRNO); |
| } |
| |
| TEST_ERROR_LOG(TEST_ERRNO); |
| |
| (void)cleanup_test(i); |
| |
| } /* End of TEST CASE LOOPING. */ |
| } /* End for TEST_LOOPING */ |
| |
| /* cleanup and exit */ |
| cleanup(); |
| |
| /*NOTREACHED*/ return 0; |
| |
| } /* End main */ |
| |
| /* |
| * int |
| * setup_test() - Setup function for test cases based on the error values |
| * to be returned. |
| */ |
| int setup_test(int i, int cnt) |
| { |
| char temp[20]; |
| |
| Device = device; |
| Fstype = Type; |
| Mntpoint = mntpoint; |
| Flag = 0; |
| |
| switch (i) { |
| case 0: |
| /* Setup for umount(2) returning errno EBUSY. */ |
| if(access(Device,F_OK)) { |
| tst_brkm(TBROK, cleanup, |
| "Device %s does not exist", Device); |
| return 1; |
| } |
| |
| TEST(mount(Device, Mntpoint, Fstype, Flag, NULL)); |
| |
| if (TEST_RETURN == -1) { |
| tst_brkm(TBROK, cleanup, "mount(2) failed to mount " |
| "device %s at mountpoint %s, Got errno - %d :" |
| " %s", Device, Mntpoint, TEST_ERRNO, |
| strerror(TEST_ERRNO)); |
| return 1; |
| } |
| |
| if (getcwd(Path, PATH_MAX) == NULL) { |
| tst_resm(TWARN, "getcwd() failed to get current working" |
| " directory errno = %d : %s", errno, |
| strerror(errno)); |
| return 1; |
| } |
| sprintf(temp, "/%s/t_%d", Mntpoint, cnt); |
| strcat(Path, temp); |
| if ((fd = open(Path, O_CREAT | O_RDWR, S_IRWXU)) == -1) { |
| tst_resm(TWARN, "open() failed to create a file " |
| " %s errno = %d : %s", Path, errno, |
| strerror(errno)); |
| return 1; |
| } else { |
| return 0; |
| } |
| case 1: |
| |
| /* Setup for umount(2) returning errno EFAULT. */ |
| |
| Mntpoint = NULL; |
| break; |
| case 2: |
| /* Setup for umount(2) returning errno ENOENT. */ |
| |
| Mntpoint = Einval; |
| break; |
| case 3: |
| /* Setup for umount(2) returning errno EINVAL. */ |
| |
| if (getcwd(Path, PATH_MAX) == NULL) { |
| tst_resm(TWARN, "getcwd() failed to get current working" |
| " directory errno = %d : %s", errno, |
| strerror(errno)); |
| return 1; |
| } |
| Mntpoint = Path; |
| break; |
| case 4: |
| /* Setup for umount(2) returning errno ENAMETOOLONG. */ |
| |
| memset(Longpathname, 'a', PATH_MAX + 2); |
| Mntpoint = Longpathname; |
| break; |
| } |
| return 0; |
| } |
| |
| /* |
| * int |
| * cleanup_test() - Setup function for test cases based on the error values |
| * to be returned. |
| */ |
| int cleanup_test(int i) |
| { |
| switch (i) { |
| case 0: |
| close(fd); |
| TEST(umount(mntpoint)); |
| if (TEST_RETURN != 0) { |
| tst_resm(TWARN, "umount(2) Failed while unmounting" |
| " errno %d for testcase %s", TEST_ERRNO, |
| testcases[i].exp_errval); |
| } |
| break; |
| } |
| return 0; |
| } |
| |
| /* setup() - performs all ONE TIME setup for this test */ |
| void setup() |
| { |
| /* capture signals */ |
| tst_sig(FORK, DEF_HANDLER, cleanup); |
| |
| /* Check whether we are root */ |
| if (geteuid() != 0) { |
| if (Type != NULL) { |
| free(Type); |
| } |
| tst_brkm(TBROK, tst_exit, "Test must be run as root"); |
| } |
| |
| /* make a temp directory */ |
| tst_tmpdir(); |
| |
| (void)sprintf(mntpoint, "mnt_%d", getpid()); |
| |
| if (mkdir(mntpoint, DIR_MODE)) { |
| tst_brkm(TBROK, cleanup, "mkdir(%s, %#o) failed; " |
| "errno = %d: %s", mntpoint, DIR_MODE, errno, |
| strerror(errno)); |
| } |
| |
| /* set up expected error numbers */ |
| TEST_EXP_ENOS(exp_enos); |
| |
| /* Pause if that option was specified */ |
| TEST_PAUSE; |
| |
| return; |
| } /* End setup() */ |
| |
| /* |
| *cleanup() - performs all ONE TIME cleanup for this test at |
| * completion or premature exit. |
| */ |
| void cleanup() |
| { |
| if (Type != NULL) { |
| free(Type); |
| } |
| |
| /* |
| * print timing stats if that option was specified. |
| * print errno log if that option was specified. |
| */ |
| TEST_CLEANUP; |
| |
| /* Remove tmp dir and all files in it. */ |
| tst_rmdir(); |
| |
| /* exit with return code appropriate for results */ |
| tst_exit(); |
| |
| return; |
| } /* End cleanup() */ |
| |
| /* |
| * issue a help message |
| */ |
| void help() |
| { |
| printf("-T type : specifies the type of filesystem to be mounted." |
| " Default ext2. \n"); |
| printf("-D device : device used for mounting \n"); |
| } |