mirror of
https://gitlab.com/libvirt/libvirt.git
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450 lines
13 KiB
C
450 lines
13 KiB
C
/*
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* Copyright (C) 2013 Red Hat, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see
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* <http://www.gnu.org/licenses/>.
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*/
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#include <config.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include "testutils.h"
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#include "virfile.h"
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#ifdef __linux__
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# include <linux/falloc.h>
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#endif
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#define VIR_FROM_THIS VIR_FROM_NONE
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#if defined WITH_MNTENT_H && defined WITH_GETMNTENT_R
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static int testFileCheckMounts(const char *prefix,
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char **gotmounts,
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size_t gotnmounts,
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const char *const*wantmounts,
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size_t wantnmounts)
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{
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size_t i;
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if (gotnmounts != wantnmounts) {
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fprintf(stderr, "Expected %zu mounts under %s, but got %zu\n",
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wantnmounts, prefix, gotnmounts);
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return -1;
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}
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for (i = 0; i < gotnmounts; i++) {
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if (STRNEQ(gotmounts[i], wantmounts[i])) {
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fprintf(stderr, "Expected mount[%zu] '%s' but got '%s'\n",
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i, wantmounts[i], gotmounts[i]);
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return -1;
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}
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}
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return 0;
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}
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struct testFileGetMountSubtreeData {
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const char *path;
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const char *prefix;
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const char *const *mounts;
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size_t nmounts;
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bool rev;
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};
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static int testFileGetMountSubtree(const void *opaque)
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{
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g_auto(GStrv) gotmounts = NULL;
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size_t gotnmounts = 0;
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const struct testFileGetMountSubtreeData *data = opaque;
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if (data->rev) {
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if (virFileGetMountReverseSubtree(data->path,
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data->prefix,
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&gotmounts,
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&gotnmounts) < 0)
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return -1;
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} else {
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if (virFileGetMountSubtree(data->path,
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data->prefix,
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&gotmounts,
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&gotnmounts) < 0)
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return -1;
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}
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return testFileCheckMounts(data->prefix,
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gotmounts, gotnmounts,
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data->mounts, data->nmounts);
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}
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#endif /* ! defined WITH_MNTENT_H && defined WITH_GETMNTENT_R */
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struct testFileSanitizePathData
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{
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const char *path;
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const char *expect;
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};
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static int
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testFileSanitizePath(const void *opaque)
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{
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const struct testFileSanitizePathData *data = opaque;
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g_autofree char *actual = NULL;
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if (!(actual = virFileSanitizePath(data->path)))
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return -1;
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if (STRNEQ(actual, data->expect)) {
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fprintf(stderr, "\nexpect: '%s'\nactual: '%s'\n", data->expect, actual);
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return -1;
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}
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return 0;
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}
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#if WITH_DECL_SEEK_HOLE && defined(__linux__)
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/* Create a sparse file. @offsets in KiB. */
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static int
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makeSparseFile(const off_t offsets[],
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const bool startData)
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{
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int fd = -1;
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char path[] = abs_builddir "fileInData.XXXXXX";
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off_t len = 0;
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size_t i;
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if ((fd = g_mkstemp_full(path, O_RDWR | O_CLOEXEC, S_IRUSR | S_IWUSR)) < 0)
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goto error;
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if (unlink(path) < 0)
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goto error;
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for (i = 0; offsets[i] != (off_t) -1; i++)
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len += offsets[i] * 1024;
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while (len) {
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const char buf[] = "abcdefghijklmnopqrstuvwxyz";
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off_t toWrite = sizeof(buf);
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if (toWrite > len)
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toWrite = len;
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if (safewrite(fd, buf, toWrite) < 0) {
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fprintf(stderr, "unable to write to %s (errno=%d)\n", path, errno);
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goto error;
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}
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len -= toWrite;
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}
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len = 0;
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for (i = 0; offsets[i] != (off_t) -1; i++) {
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bool inData = startData;
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if (i % 2)
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inData = !inData;
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if (!inData &&
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fallocate(fd,
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FALLOC_FL_PUNCH_HOLE | FALLOC_FL_KEEP_SIZE,
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len, offsets[i] * 1024) < 0) {
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fprintf(stderr, "unable to punch a hole at offset %lld length %lld\n",
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(long long) len, (long long) offsets[i]);
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goto error;
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}
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len += offsets[i] * 1024;
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}
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if (lseek(fd, 0, SEEK_SET) == (off_t) -1) {
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fprintf(stderr, "unable to lseek (errno=%d)\n", errno);
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goto error;
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}
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return fd;
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error:
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VIR_FORCE_CLOSE(fd);
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return -1;
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}
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# define EXTENT 4
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static bool
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holesSupported(void)
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{
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off_t offsets[] = {EXTENT, EXTENT, EXTENT, -1};
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off_t tmp;
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VIR_AUTOCLOSE fd = -1;
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if ((fd = makeSparseFile(offsets, true)) < 0)
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return false;
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/* The way this works is: there are 4K of data followed by 4K hole followed
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* by 4K hole again. Check if the filesystem we are running the test suite
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* on supports holes. */
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if ((tmp = lseek(fd, 0, SEEK_DATA)) == (off_t) -1)
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return false;
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if (tmp != 0)
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return false;
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if ((tmp = lseek(fd, tmp, SEEK_HOLE)) == (off_t) -1)
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return false;
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if (tmp != EXTENT * 1024)
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return false;
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if ((tmp = lseek(fd, tmp, SEEK_DATA)) == (off_t) -1)
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return false;
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if (tmp != 2 * EXTENT * 1024)
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return false;
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if ((tmp = lseek(fd, tmp, SEEK_HOLE)) == (off_t) -1)
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return false;
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if (tmp != 3 * EXTENT * 1024)
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return false;
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return true;
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}
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#else /* !WITH_DECL_SEEK_HOLE || !defined(__linux__)*/
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static int
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makeSparseFile(const off_t offsets[] G_GNUC_UNUSED,
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const bool startData G_GNUC_UNUSED)
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{
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return -1;
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}
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static bool
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holesSupported(void)
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{
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return false;
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}
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#endif /* !WITH_DECL_SEEK_HOLE || !defined(__linux__)*/
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struct testFileInData {
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bool startData; /* whether the list of offsets starts with data section */
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off_t *offsets;
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};
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static int
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testFileInData(const void *opaque)
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{
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const struct testFileInData *data = opaque;
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VIR_AUTOCLOSE fd = -1;
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size_t i;
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if ((fd = makeSparseFile(data->offsets, data->startData)) < 0)
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return -1;
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for (i = 0; data->offsets[i] != (off_t) -1; i++) {
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bool shouldInData = data->startData;
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int realInData;
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long long shouldLen;
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long long realLen;
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if (i % 2)
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shouldInData = !shouldInData;
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if (virFileInData(fd, &realInData, &realLen) < 0)
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return -1;
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if (realInData != shouldInData) {
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fprintf(stderr, "Unexpected data/hole. Expected %s got %s\n",
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shouldInData ? "data" : "hole",
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realInData ? "data" : "hole");
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return -1;
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}
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shouldLen = data->offsets[i] * 1024;
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if (realLen != shouldLen) {
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fprintf(stderr, "Unexpected section length. Expected %lld got %lld\n",
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shouldLen, realLen);
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return -1;
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}
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if (lseek(fd, shouldLen, SEEK_CUR) < 0) {
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fprintf(stderr, "Unable to seek\n");
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return -1;
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}
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}
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return 0;
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}
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struct testFileIsSharedFSType {
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const char *mtabFile;
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const char *filename;
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const bool expected;
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};
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static int
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testFileIsSharedFSType(const void *opaque G_GNUC_UNUSED)
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{
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#ifndef __linux__
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return EXIT_AM_SKIP;
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#else
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const struct testFileIsSharedFSType *data = opaque;
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g_autofree char *mtabFile = NULL;
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bool actual;
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int ret = -1;
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mtabFile = g_strdup_printf(abs_srcdir "/virfiledata/%s", data->mtabFile);
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if (g_setenv("LIBVIRT_MTAB", mtabFile, TRUE) == FALSE) {
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fprintf(stderr, "Unable to set env variable\n");
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goto cleanup;
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}
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actual = virFileIsSharedFS(data->filename);
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if (actual != data->expected) {
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fprintf(stderr, "Unexpected FS type. Expected %d got %d\n",
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data->expected, actual);
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goto cleanup;
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}
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ret = 0;
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cleanup:
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g_unsetenv("LIBVIRT_MTAB");
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return ret;
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#endif
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}
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static int
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mymain(void)
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{
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int ret = 0;
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struct testFileSanitizePathData data1;
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#if defined WITH_MNTENT_H && defined WITH_GETMNTENT_R
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# define MTAB_PATH1 abs_srcdir "/virfiledata/mounts1.txt"
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# define MTAB_PATH2 abs_srcdir "/virfiledata/mounts2.txt"
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static const char *wantmounts1[] = {
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"/proc", "/proc/sys/fs/binfmt_misc", "/proc/sys/fs/binfmt_misc",
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};
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static const char *wantmounts1rev[] = {
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"/proc/sys/fs/binfmt_misc", "/proc/sys/fs/binfmt_misc", "/proc"
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};
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static const char *wantmounts2a[] = {
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"/etc/aliases"
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};
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static const char *wantmounts2b[] = {
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"/etc/aliases.db"
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};
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# define DO_TEST_MOUNT_SUBTREE(name, path, prefix, mounts, rev) \
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do { \
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struct testFileGetMountSubtreeData data = { \
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path, prefix, mounts, G_N_ELEMENTS(mounts), rev \
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}; \
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if (virTestRun(name, testFileGetMountSubtree, &data) < 0) \
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ret = -1; \
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} while (0)
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DO_TEST_MOUNT_SUBTREE("/proc normal", MTAB_PATH1, "/proc", wantmounts1, false);
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DO_TEST_MOUNT_SUBTREE("/proc reverse", MTAB_PATH1, "/proc", wantmounts1rev, true);
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DO_TEST_MOUNT_SUBTREE("/etc/aliases", MTAB_PATH2, "/etc/aliases", wantmounts2a, false);
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DO_TEST_MOUNT_SUBTREE("/etc/aliases.db", MTAB_PATH2, "/etc/aliases.db", wantmounts2b, false);
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#endif /* ! defined WITH_MNTENT_H && defined WITH_GETMNTENT_R */
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#define DO_TEST_SANITIZE_PATH(PATH, EXPECT) \
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do { \
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data1.path = PATH; \
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data1.expect = EXPECT; \
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if (virTestRun(virTestCounterNext(), testFileSanitizePath, \
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&data1) < 0) \
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ret = -1; \
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} while (0)
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#define DO_TEST_SANITIZE_PATH_SAME(PATH) DO_TEST_SANITIZE_PATH(PATH, PATH)
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virTestCounterReset("testFileSanitizePath ");
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DO_TEST_SANITIZE_PATH("", "");
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DO_TEST_SANITIZE_PATH("/", "/");
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DO_TEST_SANITIZE_PATH("/path", "/path");
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DO_TEST_SANITIZE_PATH("/path/to/blah", "/path/to/blah");
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DO_TEST_SANITIZE_PATH("/path/", "/path");
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DO_TEST_SANITIZE_PATH("///////", "/");
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DO_TEST_SANITIZE_PATH("//", "//");
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DO_TEST_SANITIZE_PATH(".", ".");
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DO_TEST_SANITIZE_PATH("../", "..");
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DO_TEST_SANITIZE_PATH("../../", "../..");
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DO_TEST_SANITIZE_PATH("//foo//bar", "//foo/bar");
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DO_TEST_SANITIZE_PATH("/bar//foo", "/bar/foo");
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DO_TEST_SANITIZE_PATH_SAME("gluster://bar.baz/foo/hoo");
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DO_TEST_SANITIZE_PATH_SAME("gluster://bar.baz//fooo/hoo");
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DO_TEST_SANITIZE_PATH_SAME("gluster://bar.baz//////fooo/hoo");
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DO_TEST_SANITIZE_PATH_SAME("gluster://bar.baz/fooo//hoo");
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DO_TEST_SANITIZE_PATH_SAME("gluster://bar.baz/fooo///////hoo");
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#define DO_TEST_IN_DATA(inData, ...) \
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do { \
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off_t offsets[] = {__VA_ARGS__, -1}; \
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struct testFileInData data = { \
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.startData = inData, .offsets = offsets, \
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}; \
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if (virTestRun(virTestCounterNext(), testFileInData, &data) < 0) \
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ret = -1; \
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} while (0)
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if (holesSupported()) {
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virTestCounterReset("testFileInData ");
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DO_TEST_IN_DATA(true, 4, 4, 4);
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DO_TEST_IN_DATA(false, 4, 4, 4);
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DO_TEST_IN_DATA(true, 8, 8, 8);
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DO_TEST_IN_DATA(false, 8, 8, 8);
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DO_TEST_IN_DATA(true, 8, 16, 32, 64, 128, 256, 512);
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DO_TEST_IN_DATA(false, 8, 16, 32, 64, 128, 256, 512);
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}
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#define DO_TEST_FILE_IS_SHARED_FS_TYPE(mtab, file, exp) \
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do { \
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struct testFileIsSharedFSType data = { \
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.mtabFile = mtab, .filename = file, .expected = exp \
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}; \
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if (virTestRun(virTestCounterNext(), testFileIsSharedFSType, &data) < 0) \
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ret = -1; \
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} while (0)
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virTestCounterReset("testFileIsSharedFSType ");
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DO_TEST_FILE_IS_SHARED_FS_TYPE("mounts1.txt", "/boot/vmlinuz", false);
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DO_TEST_FILE_IS_SHARED_FS_TYPE("mounts2.txt", "/run/user/501/gvfs/some/file", false);
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DO_TEST_FILE_IS_SHARED_FS_TYPE("mounts3.txt", "/nfs/file", true);
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DO_TEST_FILE_IS_SHARED_FS_TYPE("mounts3.txt", "/nfs/blah", false);
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DO_TEST_FILE_IS_SHARED_FS_TYPE("mounts3.txt", "/gluster/file", true);
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DO_TEST_FILE_IS_SHARED_FS_TYPE("mounts3.txt", "/gluster/sshfs/file", false);
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DO_TEST_FILE_IS_SHARED_FS_TYPE("mounts3.txt", "/some/symlink/file", true);
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DO_TEST_FILE_IS_SHARED_FS_TYPE("mounts3.txt", "/ceph/file", true);
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DO_TEST_FILE_IS_SHARED_FS_TYPE("mounts3.txt", "/ceph/multi/file", true);
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DO_TEST_FILE_IS_SHARED_FS_TYPE("mounts3.txt", "/gpfs/data", true);
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DO_TEST_FILE_IS_SHARED_FS_TYPE("mounts3.txt", "/quobyte", true);
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return ret != 0 ? EXIT_FAILURE : EXIT_SUCCESS;
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}
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#ifdef __linux__
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VIR_TEST_MAIN_PRELOAD(mymain, VIR_TEST_MOCK("virfile"))
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#else
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VIR_TEST_MAIN(mymain)
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#endif
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