Hi!
> +/*
> + * Copyright (c) 2015 Fujitsu Ltd.
> + * Author: Guangwen Feng <[email protected]>
> + *
> + * 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
> + * alone with this program.
> + */
> +
> +/*
> + * DESCRIPTION
> + * Test for feature MNT_EXPIRE of umount2().
> + * "Mark the mount point as expired.If a mount point is not currently
> + * in use, then an initial call to umount2() with this flag fails with
> + * the error EAGAIN, but marks the mount point as expired. The mount
> + * point remains expired as long as it isn't accessed by any process.
> + * A second umount2() call specifying MNT_EXPIRE unmounts an expired
> + * mount point. This flag cannot be specified with either MNT_FORCE or
> + * MNT_DETACH. (fails with the error EINVAL)"
> + */
> +
> +#include <errno.h>
> +#include <sys/mount.h>
> +
> +#include "test.h"
> +#include "safe_macros.h"
> +#include "lapi/mount.h"
> +
> +#define DIR_MODE (S_IRWXU | S_IRWXG | S_IROTH | S_IXOTH)
> +#define MNTPOINT "mntpoint"
> +
> +static void setup(void);
> +static void test_umount2(int i);
> +static void verify_failure(int i);
> +static void verify_success(int i);
> +static void cleanup(void);
> +
> +static const char *device;
> +static const char *fs_type;
> +
> +static int mount_flag;
> +
> +static struct test_case_t {
> + int flag;
> + int exp_errno;
> + const char *string;
Same as the fcntl testcase. Can you please name this variable more
reasonably?
> +} test_cases[] = {
> + {MNT_EXPIRE | MNT_FORCE, EINVAL,
> + "umount2(2) with MNT_EXPIRE | MNT_FORCE expected EINVAL"},
> + {MNT_EXPIRE | MNT_DETACH, EINVAL,
> + "umount2(2) with MNT_EXPIRE | MNT_DETACH expected EINVAL"},
> + {MNT_EXPIRE, EAGAIN,
> + "initial call to umount2(2) with MNT_EXPIRE expected EAGAIN"},
> + {MNT_EXPIRE, EAGAIN,
> + "umount2(2) with MNT_EXPIRE after access(2) expected EAGAIN"},
> + {MNT_EXPIRE, 0,
> + "second call to umount2(2) with MNT_EXPIRE expected success"},
> +};
> +
> +char *TCID = "umount2_02";
> +int TST_TOTAL = ARRAY_SIZE(test_cases);
> +
> +int main(int ac, char **av)
> +{
> + int lc;
> + int tc;
> +
> + tst_parse_opts(ac, av, NULL, NULL);
> +
> + setup();
> +
> + for (lc = 0; TEST_LOOPING(lc); lc++) {
> + tst_count = 0;
> +
> + SAFE_MOUNT(cleanup, device, MNTPOINT, fs_type, 0, NULL);
> + mount_flag = 1;
> +
> + for (tc = 0; tc < TST_TOTAL; tc++)
> + test_umount2(tc);
> +
> + if (mount_flag) {
> + SAFE_UMOUNT(cleanup, MNTPOINT);
> + mount_flag = 0;
> + }
> + }
> +
> + cleanup();
> + tst_exit();
> +}
> +
> +static void setup(void)
> +{
> + tst_require_root();
> +
> + if ((tst_kvercmp(2, 6, 8)) < 0) {
> + tst_brkm(TCONF, NULL, "This test can only run on kernels "
> + "that are 2.6.8 or higher");
> + }
> +
> + tst_sig(NOFORK, DEF_HANDLER, NULL);
> +
> + tst_tmpdir();
> +
> + fs_type = tst_dev_fs_type();
> + device = tst_acquire_device(cleanup);
> +
> + if (!device)
> + tst_brkm(TCONF, cleanup, "Failed to obtain block device");
> +
> + tst_mkfs(cleanup, device, fs_type, NULL);
> +
> + SAFE_MKDIR(cleanup, MNTPOINT, DIR_MODE);
> +
> + TEST_PAUSE;
> +}
> +
> +static void test_umount2(int i)
> +{
> + /* a new access removes the expired mark of the mount point */
> + if (strstr(test_cases[i].string, "access(2)") != NULL) {
> + if (access(MNTPOINT, F_OK) == -1)
> + tst_brkm(TBROK | TERRNO, cleanup, "access(2) failed");
> + }
This is too fragile and may fail horribly if we ever change the testcase
output. If you need to do a special setup before this testcase add a
function pointer to the testcase structure and call it here if it's not
NULL.
I.e. Add void (*setup)(void) to the test case structure, set it to a
function that does the access for this case and here do:
if (tcases[i].setup)
tcases[i].setup();
Or even easier we can add an integer flag to the structure and do:
if (tcases[i].do_access) {
if (access(MNTPOINT, F_OK) == -1)
tst_brkm(TBROK | TERRNO, cleanup, "access(2) failed");
}
> + TEST(umount2(MNTPOINT, test_cases[i].flag));
> +
> + if (test_cases[i].exp_errno != 0)
> + verify_failure(i);
> + else
> + verify_success(i);
> +}
> +
> +static void verify_failure(int i)
> +{
> + if (TEST_RETURN == 0) {
> + tst_resm(TFAIL, "umount2(2) succeeded unexpectedly, %s",
> + test_cases[i].string);
> + mount_flag = 0;
> + return;
> + }
> +
> + if (TEST_ERRNO != test_cases[i].exp_errno) {
> + tst_resm(TFAIL | TTERRNO, "umount2(2) failed unexpectedly, %s",
> + test_cases[i].string);
The same as below. Why don't we just print the message from the
structure?
> + return;
> + }
> +
> + tst_resm(TPASS, "umount2(2) failed as expected");
Can we print which errno have we succesfully failed with?
> +}
> +
> +static void verify_success(int i)
> +{
> + if (TEST_RETURN != 0) {
> + tst_resm(TFAIL | TTERRNO, "umount2(2) failed, %s",
> + test_cases[i].string);
This would create pretty ugly messages i.e.
"umount2(2) failed, second call to umount2(2) with MNT_EXPIRE expected
success"
What about we just print the message from the structure here?
> + return;
> + }
> +
> + tst_resm(TPASS, "umount2(2) succeeded as expected");
> + mount_flag = 0;
> +}
> +
> +static void cleanup(void)
> +{
> + if (mount_flag && tst_umount(MNTPOINT))
> + tst_resm(TWARN | TERRNO, "Failed to unmount");
> +
> + if (device)
> + tst_release_device(NULL, device);
> +
> + tst_rmdir();
> +}
> --
> 1.8.4.2
>
--
Cyril Hrubis
[email protected]
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