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https://gitlab.com/libvirt/libvirt.git
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7a1e691711
Convert the type of loop iterators named 'i', 'j', k', 'ii', 'jj', 'kk', to be 'size_t' instead of 'int' or 'unsigned int', also santizing 'ii', 'jj', 'kk' to use the normal 'i', 'j', 'k' naming Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
562 lines
19 KiB
C
562 lines
19 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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* Author: Eric Blake <eblake@redhat.com>
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*/
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#include <config.h>
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#include <stdlib.h>
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#include "testutils.h"
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#include "vircommand.h"
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#include "virerror.h"
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#include "virfile.h"
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#include "virlog.h"
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#include "virstoragefile.h"
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#include "virstring.h"
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#define VIR_FROM_THIS VIR_FROM_NONE
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#define datadir abs_builddir "/virstoragedata"
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/* This test creates the following files, all in datadir:
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* raw: 1024-byte raw file
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* qcow2: qcow2 file with 'raw' as backing
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* wrap: qcow2 file with 'qcow2' as backing
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* qed: qed file with 'raw' as backing
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* sub/link1: symlink to qcow2
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* sub/link2: symlink to wrap
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*
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* Relative names to these files are known at compile time, but absolute
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* and canonical names depend on where the test is run; for convenience,
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* we pre-populate the computation of these names for use during the test.
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*/
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static char *qemuimg;
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static char *absraw;
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static char *canonraw;
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static char *absqcow2;
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static char *canonqcow2;
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static char *abswrap;
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static char *absqed;
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static char *abslink2;
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static void
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testCleanupImages(void)
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{
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virCommandPtr cmd;
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VIR_FREE(qemuimg);
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VIR_FREE(absraw);
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VIR_FREE(canonraw);
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VIR_FREE(absqcow2);
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VIR_FREE(canonqcow2);
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VIR_FREE(abswrap);
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VIR_FREE(absqed);
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VIR_FREE(abslink2);
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if (chdir(abs_builddir) < 0) {
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fprintf(stderr, "unable to return to correct directory, refusing to "
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"clean up %s\n", datadir);
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return;
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}
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cmd = virCommandNewArgList("rm", "-rf", datadir, NULL);
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ignore_value(virCommandRun(cmd, NULL));
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virCommandFree(cmd);
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}
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static int
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testPrepImages(void)
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{
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int ret = EXIT_FAILURE;
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virCommandPtr cmd = NULL;
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qemuimg = virFindFileInPath("kvm-img");
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if (!qemuimg)
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qemuimg = virFindFileInPath("qemu-img");
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if (!qemuimg)
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goto skip;
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if (virAsprintf(&absraw, "%s/raw", datadir) < 0 ||
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virAsprintf(&absqcow2, "%s/qcow2", datadir) < 0 ||
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virAsprintf(&abswrap, "%s/wrap", datadir) < 0 ||
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virAsprintf(&absqed, "%s/qed", datadir) < 0 ||
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virAsprintf(&abslink2, "%s/sub/link2", datadir) < 0)
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goto cleanup;
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if (virFileMakePath(datadir "/sub") < 0) {
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fprintf(stderr, "unable to create directory %s\n", datadir "/sub");
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goto cleanup;
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}
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if (chdir(datadir) < 0) {
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fprintf(stderr, "unable to test relative backing chains\n");
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goto cleanup;
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}
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/* I'm lazy enough to use a shell one-liner instead of open/write/close */
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virCommandFree(cmd);
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cmd = virCommandNewArgList("sh", "-c", "printf %1024d 0 > raw", NULL);
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if (virCommandRun(cmd, NULL) < 0) {
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fprintf(stderr, "unable to create raw file\n");
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goto cleanup;
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}
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if (!(canonraw = canonicalize_file_name(absraw))) {
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virReportOOMError();
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goto cleanup;
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}
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/* Create a qcow2 wrapping relative raw; later on, we modify its
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* metadata to test other configurations */
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virCommandFree(cmd);
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cmd = virCommandNewArgList(qemuimg, "create", "-f", "qcow2",
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"-obacking_file=raw,backing_fmt=raw", "qcow2",
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NULL);
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if (virCommandRun(cmd, NULL) < 0)
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goto skip;
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/* Make sure our later uses of 'qemu-img rebase' will work */
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virCommandFree(cmd);
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cmd = virCommandNewArgList(qemuimg, "rebase", "-u", "-f", "qcow2",
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"-F", "raw", "-b", "raw", "qcow2", NULL);
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if (virCommandRun(cmd, NULL) < 0)
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goto skip;
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if (!(canonqcow2 = canonicalize_file_name(absqcow2))) {
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virReportOOMError();
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goto cleanup;
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}
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/* Create a second qcow2 wrapping the first, to be sure that we
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* can correctly avoid insecure probing. */
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virCommandFree(cmd);
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cmd = virCommandNewArgList(qemuimg, "create", "-f", "qcow2", NULL);
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virCommandAddArgFormat(cmd, "-obacking_file=%s,backing_fmt=qcow2",
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absqcow2);
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virCommandAddArg(cmd, "wrap");
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if (virCommandRun(cmd, NULL) < 0)
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goto skip;
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/* Create a qed file. */
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virCommandFree(cmd);
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cmd = virCommandNewArgList(qemuimg, "create", "-f", "qed", NULL);
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virCommandAddArgFormat(cmd, "-obacking_file=%s,backing_fmt=raw",
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absraw);
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virCommandAddArg(cmd, "qed");
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if (virCommandRun(cmd, NULL) < 0)
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goto skip;
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#ifdef HAVE_SYMLINK
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/* Create some symlinks in a sub-directory. */
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if (symlink("../qcow2", datadir "/sub/link1") < 0 ||
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symlink("../wrap", datadir "/sub/link2") < 0) {
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fprintf(stderr, "unable to create symlink");
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goto cleanup;
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}
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#endif
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ret = 0;
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cleanup:
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virCommandFree(cmd);
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if (ret)
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testCleanupImages();
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return ret;
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skip:
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fputs("qemu-img is too old; skipping this test\n", stderr);
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ret = EXIT_AM_SKIP;
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goto cleanup;
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}
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typedef struct _testFileData testFileData;
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struct _testFileData
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{
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const char *expBackingStore;
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const char *expBackingStoreRaw;
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const char *expDirectory;
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enum virStorageFileFormat expFormat;
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bool expIsFile;
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unsigned long long expCapacity;
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bool expEncrypted;
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};
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enum {
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EXP_PASS = 0,
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EXP_FAIL = 1,
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EXP_WARN = 2,
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ALLOW_PROBE = 4,
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};
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struct testChainData
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{
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const char *start;
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enum virStorageFileFormat format;
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const testFileData *files;
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int nfiles;
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unsigned int flags;
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};
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static int
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testStorageChain(const void *args)
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{
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const struct testChainData *data = args;
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int ret = -1;
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virStorageFileMetadataPtr meta;
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virStorageFileMetadataPtr elt;
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size_t i = 0;
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meta = virStorageFileGetMetadata(data->start, data->format, -1, -1,
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(data->flags & ALLOW_PROBE) != 0);
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if (!meta) {
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if (data->flags & EXP_FAIL) {
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virResetLastError();
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ret = 0;
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}
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goto cleanup;
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} else if (data->flags & EXP_FAIL) {
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fprintf(stderr, "call should have failed\n");
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goto cleanup;
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}
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if (data->flags & EXP_WARN) {
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if (!virGetLastError()) {
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fprintf(stderr, "call should have warned\n");
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goto cleanup;
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}
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virResetLastError();
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} else if (virGetLastError()) {
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fprintf(stderr, "call should not have warned\n");
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goto cleanup;
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}
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elt = meta;
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while (elt) {
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char *expect = NULL;
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char *actual = NULL;
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if (i == data->nfiles) {
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fprintf(stderr, "probed chain was too long\n");
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goto cleanup;
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}
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if (virAsprintf(&expect,
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"store:%s\nraw:%s\ndirectory:%s\nother:%d %d %lld %d",
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NULLSTR(data->files[i].expBackingStore),
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NULLSTR(data->files[i].expBackingStoreRaw),
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NULLSTR(data->files[i].expDirectory),
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data->files[i].expFormat,
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data->files[i].expIsFile,
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data->files[i].expCapacity,
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data->files[i].expEncrypted) < 0 ||
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virAsprintf(&actual,
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"store:%s\nraw:%s\ndirectory:%s\nother:%d %d %lld %d",
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NULLSTR(elt->backingStore),
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NULLSTR(elt->backingStoreRaw),
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NULLSTR(elt->directory),
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elt->backingStoreFormat, elt->backingStoreIsFile,
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elt->capacity, elt->encrypted) < 0) {
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VIR_FREE(expect);
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VIR_FREE(actual);
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goto cleanup;
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}
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if (STRNEQ(expect, actual)) {
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virtTestDifference(stderr, expect, actual);
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VIR_FREE(expect);
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VIR_FREE(actual);
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goto cleanup;
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}
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VIR_FREE(expect);
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VIR_FREE(actual);
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elt = elt->backingMeta;
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i++;
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}
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if (i != data->nfiles) {
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fprintf(stderr, "probed chain was too short\n");
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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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virStorageFileFreeMetadata(meta);
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return ret;
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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;
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virCommandPtr cmd = NULL;
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/* Prep some files with qemu-img; if that is not found on PATH, or
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* if it lacks support for qcow2 and qed, skip this test. */
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if ((ret = testPrepImages()) != 0)
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return ret;
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#define TEST_ONE_CHAIN(id, start, format, chain, flags) \
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do { \
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struct testChainData data = { \
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start, format, chain, ARRAY_CARDINALITY(chain), flags, \
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}; \
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if (virtTestRun("Storage backing chain " id, 1, \
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testStorageChain, &data) < 0) \
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ret = -1; \
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} while (0)
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#define TEST_CHAIN(id, relstart, absstart, format, chain1, flags1, \
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chain2, flags2, chain3, flags3, chain4, flags4) \
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do { \
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TEST_ONE_CHAIN(#id "a", relstart, format, chain1, flags1); \
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TEST_ONE_CHAIN(#id "b", relstart, format, chain2, flags2); \
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TEST_ONE_CHAIN(#id "c", absstart, format, chain3, flags3); \
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TEST_ONE_CHAIN(#id "d", absstart, format, chain4, flags4); \
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} while (0)
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/* Expected details about files in chains */
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const testFileData raw = {
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NULL, NULL, NULL, VIR_STORAGE_FILE_NONE, false, 0, false,
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};
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const testFileData qcow2_relback_relstart = {
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canonraw, "raw", ".", VIR_STORAGE_FILE_RAW, true, 1024, false,
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};
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const testFileData qcow2_relback_absstart = {
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canonraw, "raw", datadir, VIR_STORAGE_FILE_RAW, true, 1024, false,
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};
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const testFileData qcow2_absback = {
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canonraw, absraw, datadir, VIR_STORAGE_FILE_RAW, true, 1024, false,
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};
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const testFileData qcow2_as_probe = {
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canonraw, absraw, datadir, VIR_STORAGE_FILE_AUTO, true, 1024, false,
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};
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const testFileData qcow2_bogus = {
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NULL, datadir "/bogus", datadir, VIR_STORAGE_FILE_NONE,
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false, 1024, false,
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};
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const testFileData qcow2_protocol = {
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"nbd:example.org:6000", NULL, NULL, VIR_STORAGE_FILE_RAW,
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false, 1024, false,
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};
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const testFileData wrap = {
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canonqcow2, absqcow2, datadir, VIR_STORAGE_FILE_QCOW2,
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true, 1024, false,
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};
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const testFileData wrap_as_raw = {
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canonqcow2, absqcow2, datadir, VIR_STORAGE_FILE_RAW,
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true, 1024, false,
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};
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const testFileData wrap_as_probe = {
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canonqcow2, absqcow2, datadir, VIR_STORAGE_FILE_AUTO,
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true, 1024, false,
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};
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const testFileData qed = {
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canonraw, absraw, datadir, VIR_STORAGE_FILE_RAW,
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true, 1024, false,
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};
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#if HAVE_SYMLINK
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const testFileData link1_rel = {
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canonraw, "../raw", "sub/../sub/..", VIR_STORAGE_FILE_RAW,
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true, 1024, false,
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};
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const testFileData link1_abs = {
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canonraw, "../raw", datadir "/sub/../sub/..", VIR_STORAGE_FILE_RAW,
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true, 1024, false,
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};
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const testFileData link2_rel = {
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canonqcow2, "../sub/link1", "sub/../sub", VIR_STORAGE_FILE_QCOW2,
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true, 1024, false,
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};
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const testFileData link2_abs = {
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canonqcow2, "../sub/link1", datadir "/sub/../sub",
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VIR_STORAGE_FILE_QCOW2, true, 1024, false,
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};
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#endif
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/* The actual tests, in several groups. */
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/* Missing file */
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const testFileData chain0[] = { };
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TEST_ONE_CHAIN("0", "bogus", VIR_STORAGE_FILE_RAW, chain0, EXP_FAIL);
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/* Raw image, whether with right format or no specified format */
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const testFileData chain1[] = { raw };
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TEST_CHAIN(1, "raw", absraw, VIR_STORAGE_FILE_RAW,
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chain1, EXP_PASS,
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chain1, ALLOW_PROBE | EXP_PASS,
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chain1, EXP_PASS,
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chain1, ALLOW_PROBE | EXP_PASS);
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TEST_CHAIN(2, "raw", absraw, VIR_STORAGE_FILE_AUTO,
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chain1, EXP_PASS,
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chain1, ALLOW_PROBE | EXP_PASS,
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chain1, EXP_PASS,
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chain1, ALLOW_PROBE | EXP_PASS);
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/* Qcow2 file with relative raw backing, format provided */
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const testFileData chain3a[] = { qcow2_relback_relstart, raw };
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const testFileData chain3c[] = { qcow2_relback_absstart, raw };
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const testFileData chain4a[] = { raw };
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TEST_CHAIN(3, "qcow2", absqcow2, VIR_STORAGE_FILE_QCOW2,
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chain3a, EXP_PASS,
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chain3a, ALLOW_PROBE | EXP_PASS,
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chain3c, EXP_PASS,
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chain3c, ALLOW_PROBE | EXP_PASS);
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TEST_CHAIN(4, "qcow2", absqcow2, VIR_STORAGE_FILE_AUTO,
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chain4a, EXP_PASS,
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chain3a, ALLOW_PROBE | EXP_PASS,
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chain4a, EXP_PASS,
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chain3c, ALLOW_PROBE | EXP_PASS);
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/* Rewrite qcow2 file to use absolute backing name */
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virCommandFree(cmd);
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cmd = virCommandNewArgList(qemuimg, "rebase", "-u", "-f", "qcow2",
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"-F", "raw", "-b", absraw, "qcow2", NULL);
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if (virCommandRun(cmd, NULL) < 0)
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ret = -1;
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/* Qcow2 file with raw as absolute backing, backing format provided */
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const testFileData chain5[] = { qcow2_absback, raw };
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const testFileData chain6[] = { raw };
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TEST_CHAIN(5, "qcow2", absqcow2, VIR_STORAGE_FILE_QCOW2,
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chain5, EXP_PASS,
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chain5, ALLOW_PROBE | EXP_PASS,
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chain5, EXP_PASS,
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chain5, ALLOW_PROBE | EXP_PASS);
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TEST_CHAIN(6, "qcow2", absqcow2, VIR_STORAGE_FILE_AUTO,
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chain6, EXP_PASS,
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chain5, ALLOW_PROBE | EXP_PASS,
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chain6, EXP_PASS,
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chain5, ALLOW_PROBE | EXP_PASS);
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/* Wrapped file access */
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const testFileData chain7[] = { wrap, qcow2_absback, raw };
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TEST_CHAIN(7, "wrap", abswrap, VIR_STORAGE_FILE_QCOW2,
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chain7, EXP_PASS,
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chain7, ALLOW_PROBE | EXP_PASS,
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chain7, EXP_PASS,
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chain7, ALLOW_PROBE | EXP_PASS);
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/* Rewrite qcow2 and wrap file to omit backing file type */
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virCommandFree(cmd);
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cmd = virCommandNewArgList(qemuimg, "rebase", "-u", "-f", "qcow2",
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"-b", absraw, "qcow2", NULL);
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if (virCommandRun(cmd, NULL) < 0)
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ret = -1;
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virCommandFree(cmd);
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cmd = virCommandNewArgList(qemuimg, "rebase", "-u", "-f", "qcow2",
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"-b", absqcow2, "wrap", NULL);
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if (virCommandRun(cmd, NULL) < 0)
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ret = -1;
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/* Qcow2 file with raw as absolute backing, backing format omitted */
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const testFileData chain8a[] = { wrap_as_raw, raw };
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const testFileData chain8b[] = { wrap_as_probe, qcow2_as_probe, raw };
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TEST_CHAIN(8, "wrap", abswrap, VIR_STORAGE_FILE_QCOW2,
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chain8a, EXP_PASS,
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chain8b, ALLOW_PROBE | EXP_PASS,
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chain8a, EXP_PASS,
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chain8b, ALLOW_PROBE | EXP_PASS);
|
|
|
|
/* Rewrite qcow2 to a missing backing file, with backing type */
|
|
virCommandFree(cmd);
|
|
cmd = virCommandNewArgList(qemuimg, "rebase", "-u", "-f", "qcow2",
|
|
"-F", "qcow2", "-b", datadir "/bogus",
|
|
"qcow2", NULL);
|
|
if (virCommandRun(cmd, NULL) < 0)
|
|
ret = -1;
|
|
|
|
/* Qcow2 file with missing backing file but specified type */
|
|
const testFileData chain9[] = { qcow2_bogus };
|
|
TEST_CHAIN(9, "qcow2", absqcow2, VIR_STORAGE_FILE_QCOW2,
|
|
chain9, EXP_WARN,
|
|
chain9, ALLOW_PROBE | EXP_WARN,
|
|
chain9, EXP_WARN,
|
|
chain9, ALLOW_PROBE | EXP_WARN);
|
|
|
|
/* Rewrite qcow2 to a missing backing file, without backing type */
|
|
virCommandFree(cmd);
|
|
cmd = virCommandNewArgList(qemuimg, "rebase", "-u", "-f", "qcow2",
|
|
"-b", datadir "/bogus", "qcow2", NULL);
|
|
if (virCommandRun(cmd, NULL) < 0)
|
|
ret = -1;
|
|
|
|
/* Qcow2 file with missing backing file and no specified type */
|
|
const testFileData chain10[] = { qcow2_bogus };
|
|
TEST_CHAIN(10, "qcow2", absqcow2, VIR_STORAGE_FILE_QCOW2,
|
|
chain10, EXP_WARN,
|
|
chain10, ALLOW_PROBE | EXP_WARN,
|
|
chain10, EXP_WARN,
|
|
chain10, ALLOW_PROBE | EXP_WARN);
|
|
|
|
/* Rewrite qcow2 to use an nbd: protocol as backend */
|
|
virCommandFree(cmd);
|
|
cmd = virCommandNewArgList(qemuimg, "rebase", "-u", "-f", "qcow2",
|
|
"-F", "raw", "-b", "nbd:example.org:6000",
|
|
"qcow2", NULL);
|
|
if (virCommandRun(cmd, NULL) < 0)
|
|
ret = -1;
|
|
|
|
/* Qcow2 file with backing protocol instead of file */
|
|
const testFileData chain11[] = { qcow2_protocol };
|
|
TEST_CHAIN(11, "qcow2", absqcow2, VIR_STORAGE_FILE_QCOW2,
|
|
chain11, EXP_PASS,
|
|
chain11, ALLOW_PROBE | EXP_PASS,
|
|
chain11, EXP_PASS,
|
|
chain11, ALLOW_PROBE | EXP_PASS);
|
|
|
|
/* qed file */
|
|
const testFileData chain12a[] = { raw };
|
|
const testFileData chain12b[] = { qed, raw };
|
|
TEST_CHAIN(12, "qed", absqed, VIR_STORAGE_FILE_AUTO,
|
|
chain12a, EXP_PASS,
|
|
chain12b, ALLOW_PROBE | EXP_PASS,
|
|
chain12a, EXP_PASS,
|
|
chain12b, ALLOW_PROBE | EXP_PASS);
|
|
|
|
#ifdef HAVE_SYMLINK
|
|
/* Rewrite qcow2 and wrap file to use backing names relative to a
|
|
* symlink from a different directory */
|
|
virCommandFree(cmd);
|
|
cmd = virCommandNewArgList(qemuimg, "rebase", "-u", "-f", "qcow2",
|
|
"-F", "raw", "-b", "../raw", "qcow2", NULL);
|
|
if (virCommandRun(cmd, NULL) < 0)
|
|
ret = -1;
|
|
|
|
virCommandFree(cmd);
|
|
cmd = virCommandNewArgList(qemuimg, "rebase", "-u", "-f", "qcow2",
|
|
"-F", "qcow2", "-b", "../sub/link1", "wrap",
|
|
NULL);
|
|
if (virCommandRun(cmd, NULL) < 0)
|
|
ret = -1;
|
|
|
|
/* Behavior of symlinks to qcow2 with relative backing files */
|
|
const testFileData chain13a[] = { link2_rel, link1_rel, raw };
|
|
const testFileData chain13c[] = { link2_abs, link1_abs, raw };
|
|
TEST_CHAIN(13, "sub/link2", abslink2, VIR_STORAGE_FILE_QCOW2,
|
|
chain13a, EXP_PASS,
|
|
chain13a, ALLOW_PROBE | EXP_PASS,
|
|
chain13c, EXP_PASS,
|
|
chain13c, ALLOW_PROBE | EXP_PASS);
|
|
#endif
|
|
|
|
/* Final cleanup */
|
|
testCleanupImages();
|
|
virCommandFree(cmd);
|
|
|
|
return ret == 0 ? EXIT_SUCCESS : EXIT_FAILURE;
|
|
}
|
|
|
|
VIRT_TEST_MAIN(mymain)
|