libvirt/tests/virfiletest.c
Andrea Bolognani 3e7db8d3e8 Remove backslash alignment attempts
Right-aligning backslashes when defining macros or using complex
commands in Makefiles looks cute, but as soon as any changes is
required to the code you end up with either distractingly broken
alignment or unnecessarily big diffs where most of the changes
are just pushing all backslashes a few characters to one side.

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    done

Signed-off-by: Andrea Bolognani <abologna@redhat.com>
2017-11-03 13:24:12 +01:00

403 lines
11 KiB
C

/*
* Copyright (C) 2013 Red Hat, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see
* <http://www.gnu.org/licenses/>.
*
* Author: Daniel P. Berrange <berrange@redhat.com>
*/
#include <config.h>
#include <stdlib.h>
#include <fcntl.h>
#include "testutils.h"
#include "virfile.h"
#include "virstring.h"
#ifdef __linux__
# include <linux/falloc.h>
#endif
#if defined HAVE_MNTENT_H && defined HAVE_GETMNTENT_R
static int testFileCheckMounts(const char *prefix,
char **gotmounts,
size_t gotnmounts,
const char *const*wantmounts,
size_t wantnmounts)
{
size_t i;
if (gotnmounts != wantnmounts) {
fprintf(stderr, "Expected %zu mounts under %s, but got %zu\n",
wantnmounts, prefix, gotnmounts);
return -1;
}
for (i = 0; i < gotnmounts; i++) {
if (STRNEQ(gotmounts[i], wantmounts[i])) {
fprintf(stderr, "Expected mount[%zu] '%s' but got '%s'\n",
i, wantmounts[i], gotmounts[i]);
return -1;
}
}
return 0;
}
struct testFileGetMountSubtreeData {
const char *path;
const char *prefix;
const char *const *mounts;
size_t nmounts;
bool rev;
};
static int testFileGetMountSubtree(const void *opaque)
{
int ret = -1;
char **gotmounts = NULL;
size_t gotnmounts = 0;
const struct testFileGetMountSubtreeData *data = opaque;
if (data->rev) {
if (virFileGetMountReverseSubtree(data->path,
data->prefix,
&gotmounts,
&gotnmounts) < 0)
goto cleanup;
} else {
if (virFileGetMountSubtree(data->path,
data->prefix,
&gotmounts,
&gotnmounts) < 0)
goto cleanup;
}
ret = testFileCheckMounts(data->prefix,
gotmounts, gotnmounts,
data->mounts, data->nmounts);
cleanup:
virStringListFree(gotmounts);
return ret;
}
#endif /* ! defined HAVE_MNTENT_H && defined HAVE_GETMNTENT_R */
struct testFileSanitizePathData
{
const char *path;
const char *expect;
};
static int
testFileSanitizePath(const void *opaque)
{
const struct testFileSanitizePathData *data = opaque;
int ret = -1;
char *actual;
if (!(actual = virFileSanitizePath(data->path)))
return -1;
if (STRNEQ(actual, data->expect)) {
fprintf(stderr, "\nexpect: '%s'\nactual: '%s'\n", data->expect, actual);
goto cleanup;
}
ret = 0;
cleanup:
VIR_FREE(actual);
return ret;
}
#if HAVE_DECL_SEEK_HOLE && defined(__linux__)
/* Create a sparse file. @offsets in KiB. */
static int
makeSparseFile(const off_t offsets[],
const bool startData)
{
int fd = -1;
char path[] = abs_builddir "fileInData.XXXXXX";
off_t len = 0;
size_t i;
if ((fd = mkostemp(path, O_CLOEXEC|O_RDWR)) < 0)
goto error;
if (unlink(path) < 0)
goto error;
for (i = 0; offsets[i] != (off_t) -1; i++)
len += offsets[i] * 1024;
while (len) {
const char buf[] = "abcdefghijklmnopqrstuvwxyz";
off_t toWrite = sizeof(buf);
if (toWrite > len)
toWrite = len;
if (safewrite(fd, buf, toWrite) < 0) {
fprintf(stderr, "unable to write to %s (errno=%d)\n", path, errno);
goto error;
}
len -= toWrite;
}
len = 0;
for (i = 0; offsets[i] != (off_t) -1; i++) {
bool inData = startData;
if (i % 2)
inData = !inData;
if (!inData &&
fallocate(fd,
FALLOC_FL_PUNCH_HOLE | FALLOC_FL_KEEP_SIZE,
len, offsets[i] * 1024) < 0) {
fprintf(stderr, "unable to punch a hole at offset %lld length %lld\n",
(long long) len, (long long) offsets[i]);
goto error;
}
len += offsets[i] * 1024;
}
if (lseek(fd, 0, SEEK_SET) == (off_t) -1) {
fprintf(stderr, "unable to lseek (errno=%d)\n", errno);
goto error;
}
return fd;
error:
VIR_FORCE_CLOSE(fd);
return -1;
}
# define EXTENT 4
static bool
holesSupported(void)
{
off_t offsets[] = {EXTENT, EXTENT, EXTENT, -1};
off_t tmp;
int fd;
bool ret = false;
if ((fd = makeSparseFile(offsets, true)) < 0)
goto cleanup;
/* The way this works is: there are 4K of data followed by 4K hole followed
* by 4K hole again. Check if the filesystem we are running the test suite
* on supports holes. */
if ((tmp = lseek(fd, 0, SEEK_DATA)) == (off_t) -1)
goto cleanup;
if (tmp != 0)
goto cleanup;
if ((tmp = lseek(fd, tmp, SEEK_HOLE)) == (off_t) -1)
goto cleanup;
if (tmp != EXTENT * 1024)
goto cleanup;
if ((tmp = lseek(fd, tmp, SEEK_DATA)) == (off_t) -1)
goto cleanup;
if (tmp != 2 * EXTENT * 1024)
goto cleanup;
if ((tmp = lseek(fd, tmp, SEEK_HOLE)) == (off_t) -1)
goto cleanup;
if (tmp != 3 * EXTENT * 1024)
goto cleanup;
ret = true;
cleanup:
VIR_FORCE_CLOSE(fd);
return ret;
}
#else /* !HAVE_DECL_SEEK_HOLE || !defined(__linux__)*/
static int
makeSparseFile(const off_t offsets[] ATTRIBUTE_UNUSED,
const bool startData ATTRIBUTE_UNUSED)
{
return -1;
}
static bool
holesSupported(void)
{
return false;
}
#endif /* !HAVE_DECL_SEEK_HOLE || !defined(__linux__)*/
struct testFileInData {
bool startData; /* whether the list of offsets starts with data section */
off_t *offsets;
};
static int
testFileInData(const void *opaque)
{
const struct testFileInData *data = opaque;
int fd = -1;
int ret = -1;
size_t i;
if ((fd = makeSparseFile(data->offsets, data->startData)) < 0)
goto cleanup;
for (i = 0; data->offsets[i] != (off_t) -1; i++) {
bool shouldInData = data->startData;
int realInData;
long long shouldLen;
long long realLen;
if (i % 2)
shouldInData = !shouldInData;
if (virFileInData(fd, &realInData, &realLen) < 0)
goto cleanup;
if (realInData != shouldInData) {
fprintf(stderr, "Unexpected data/hole. Expected %s got %s\n",
shouldInData ? "data" : "hole",
realInData ? "data" : "hole");
goto cleanup;
}
shouldLen = data->offsets[i] * 1024;
if (realLen != shouldLen) {
fprintf(stderr, "Unexpected section length. Expected %lld got %lld\n",
shouldLen, realLen);
goto cleanup;
}
if (lseek(fd, shouldLen, SEEK_CUR) < 0) {
fprintf(stderr, "Unable to seek\n");
goto cleanup;
}
}
ret = 0;
cleanup:
VIR_FORCE_CLOSE(fd);
return ret;
}
static int
mymain(void)
{
int ret = 0;
struct testFileSanitizePathData data1;
#if defined HAVE_MNTENT_H && defined HAVE_GETMNTENT_R
# define MTAB_PATH1 abs_srcdir "/virfiledata/mounts1.txt"
# define MTAB_PATH2 abs_srcdir "/virfiledata/mounts2.txt"
static const char *wantmounts1[] = {
"/proc", "/proc/sys/fs/binfmt_misc", "/proc/sys/fs/binfmt_misc",
};
static const char *wantmounts1rev[] = {
"/proc/sys/fs/binfmt_misc", "/proc/sys/fs/binfmt_misc", "/proc"
};
static const char *wantmounts2a[] = {
"/etc/aliases"
};
static const char *wantmounts2b[] = {
"/etc/aliases.db"
};
# define DO_TEST_MOUNT_SUBTREE(name, path, prefix, mounts, rev) \
do { \
struct testFileGetMountSubtreeData data = { \
path, prefix, mounts, ARRAY_CARDINALITY(mounts), rev \
}; \
if (virTestRun(name, testFileGetMountSubtree, &data) < 0) \
ret = -1; \
} while (0)
DO_TEST_MOUNT_SUBTREE("/proc normal", MTAB_PATH1, "/proc", wantmounts1, false);
DO_TEST_MOUNT_SUBTREE("/proc reverse", MTAB_PATH1, "/proc", wantmounts1rev, true);
DO_TEST_MOUNT_SUBTREE("/etc/aliases", MTAB_PATH2, "/etc/aliases", wantmounts2a, false);
DO_TEST_MOUNT_SUBTREE("/etc/aliases.db", MTAB_PATH2, "/etc/aliases.db", wantmounts2b, false);
#endif /* ! defined HAVE_MNTENT_H && defined HAVE_GETMNTENT_R */
#define DO_TEST_SANITIZE_PATH(PATH, EXPECT) \
do { \
data1.path = PATH; \
data1.expect = EXPECT; \
if (virTestRun(virTestCounterNext(), testFileSanitizePath, \
&data1) < 0) \
ret = -1; \
} while (0)
#define DO_TEST_SANITIZE_PATH_SAME(PATH) DO_TEST_SANITIZE_PATH(PATH, PATH)
virTestCounterReset("testFileSanitizePath ");
DO_TEST_SANITIZE_PATH("", "");
DO_TEST_SANITIZE_PATH("/", "/");
DO_TEST_SANITIZE_PATH("/path", "/path");
DO_TEST_SANITIZE_PATH("/path/to/blah", "/path/to/blah");
DO_TEST_SANITIZE_PATH("/path/", "/path");
DO_TEST_SANITIZE_PATH("///////", "/");
DO_TEST_SANITIZE_PATH("//", "//");
DO_TEST_SANITIZE_PATH(".", ".");
DO_TEST_SANITIZE_PATH("../", "..");
DO_TEST_SANITIZE_PATH("../../", "../..");
DO_TEST_SANITIZE_PATH("//foo//bar", "//foo/bar");
DO_TEST_SANITIZE_PATH("/bar//foo", "/bar/foo");
DO_TEST_SANITIZE_PATH_SAME("gluster://bar.baz/foo/hoo");
DO_TEST_SANITIZE_PATH_SAME("gluster://bar.baz//fooo/hoo");
DO_TEST_SANITIZE_PATH_SAME("gluster://bar.baz//////fooo/hoo");
DO_TEST_SANITIZE_PATH_SAME("gluster://bar.baz/fooo//hoo");
DO_TEST_SANITIZE_PATH_SAME("gluster://bar.baz/fooo///////hoo");
#define DO_TEST_IN_DATA(inData, ...) \
do { \
off_t offsets[] = {__VA_ARGS__, -1}; \
struct testFileInData data = { \
.startData = inData, .offsets = offsets, \
}; \
if (virTestRun(virTestCounterNext(), testFileInData, &data) < 0) \
ret = -1; \
} while (0)
if (holesSupported()) {
DO_TEST_IN_DATA(true, 4, 4, 4);
DO_TEST_IN_DATA(false, 4, 4, 4);
DO_TEST_IN_DATA(true, 8, 8, 8);
DO_TEST_IN_DATA(false, 8, 8, 8);
DO_TEST_IN_DATA(true, 8, 16, 32, 64, 128, 256, 512);
DO_TEST_IN_DATA(false, 8, 16, 32, 64, 128, 256, 512);
}
return ret != 0 ? EXIT_FAILURE : EXIT_SUCCESS;
}
VIR_TEST_MAIN(mymain)