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https://gitlab.com/libvirt/libvirt.git
synced 2024-12-26 23:55:23 +00:00
3f029fb531
Since 76b644c when the support for RAM filesystems was introduced,
libvirt accepted the following XML:
<source usage='1024' unit='KiB'/>
This was parsed correctly and internally stored in bytes, but it
was formatted as (with an extra 's'):
<source usage='1024' units='KiB'/>
When read again, this was treated as if the units were missing,
meaning libvirt was unable to parse its own XML correctly.
The usage attribute was documented as being in KiB, but it was not
scaled if the unit was missing. Transient domains still worked,
because this was balanced by an extra 'k' in the mount options.
This patch:
Changes the parser to use 'units' instead of 'unit', as the latter
was never documented (fixing persistent domains) and some programs
(libvirt-glib, libvirt-sandbox) already parse the 'units' attribute.
Removes the extra 'k' from the tmpfs mount options, which is needed
because now we parse our own XML correctly.
Changes the default input unit to KiB to match documentation, fixing:
https://bugzilla.redhat.com/show_bug.cgi?id=1015689
158 lines
3.7 KiB
C
158 lines
3.7 KiB
C
#include <config.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <string.h>
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#include <sys/types.h>
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#include <fcntl.h>
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#include "testutils.h"
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#ifdef WITH_LXC
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# include "internal.h"
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# include "lxc/lxc_conf.h"
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# include "testutilslxc.h"
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# include "virstring.h"
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# define VIR_FROM_THIS VIR_FROM_NONE
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static virCapsPtr caps;
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static virDomainXMLOptionPtr xmlopt;
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static int
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testCompareXMLToXMLFiles(const char *inxml, const char *outxml, bool live)
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{
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char *inXmlData = NULL;
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char *outXmlData = NULL;
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char *actual = NULL;
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int ret = -1;
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virDomainDefPtr def = NULL;
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if (virtTestLoadFile(inxml, &inXmlData) < 0)
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goto fail;
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if (virtTestLoadFile(outxml, &outXmlData) < 0)
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goto fail;
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if (!(def = virDomainDefParseString(inXmlData, caps, xmlopt,
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1 << VIR_DOMAIN_VIRT_LXC,
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live ? 0 : VIR_DOMAIN_XML_INACTIVE)))
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goto fail;
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if (!(actual = virDomainDefFormat(def, VIR_DOMAIN_XML_SECURE)))
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goto fail;
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if (STRNEQ(outXmlData, actual)) {
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virtTestDifference(stderr, outXmlData, actual);
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goto fail;
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}
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ret = 0;
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fail:
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VIR_FREE(inXmlData);
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VIR_FREE(outXmlData);
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VIR_FREE(actual);
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virDomainDefFree(def);
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return ret;
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}
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struct testInfo {
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const char *name;
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int different;
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bool inactive_only;
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};
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static int
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testCompareXMLToXMLHelper(const void *data)
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{
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const struct testInfo *info = data;
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char *xml_in = NULL;
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char *xml_out = NULL;
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int ret = -1;
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if (virAsprintf(&xml_in, "%s/lxcxml2xmldata/lxc-%s.xml",
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abs_srcdir, info->name) < 0 ||
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virAsprintf(&xml_out, "%s/lxcxml2xmloutdata/lxc-%s.xml",
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abs_srcdir, info->name) < 0)
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goto cleanup;
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if (info->different) {
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if (testCompareXMLToXMLFiles(xml_in, xml_out, false) < 0)
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goto cleanup;
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} else {
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if (testCompareXMLToXMLFiles(xml_in, xml_in, false) < 0)
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goto cleanup;
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}
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if (!info->inactive_only) {
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if (info->different) {
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if (testCompareXMLToXMLFiles(xml_in, xml_out, true) < 0)
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goto cleanup;
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} else {
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if (testCompareXMLToXMLFiles(xml_in, xml_in, true) < 0)
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goto cleanup;
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}
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}
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ret = 0;
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cleanup:
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VIR_FREE(xml_in);
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VIR_FREE(xml_out);
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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 = 0;
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if ((caps = testLXCCapsInit()) == NULL)
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return EXIT_FAILURE;
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if (!(xmlopt = lxcDomainXMLConfInit()))
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return EXIT_FAILURE;
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# define DO_TEST_FULL(name, is_different, inactive) \
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do { \
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const struct testInfo info = {name, is_different, inactive}; \
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if (virtTestRun("LXC XML-2-XML " name, \
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testCompareXMLToXMLHelper, &info) < 0) \
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ret = -1; \
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} while (0)
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# define DO_TEST(name) \
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DO_TEST_FULL(name, 0, false)
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# define DO_TEST_DIFFERENT(name) \
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DO_TEST_FULL(name, 1, false)
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/* Unset or set all envvars here that are copied in lxcdBuildCommandLine
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* using ADD_ENV_COPY, otherwise these tests may fail due to unexpected
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* values for these envvars */
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setenv("PATH", "/bin", 1);
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DO_TEST("systemd");
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DO_TEST("hostdev");
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DO_TEST("disk-formats");
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DO_TEST_DIFFERENT("filesystem-ram");
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virObjectUnref(caps);
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virObjectUnref(xmlopt);
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return ret==0 ? EXIT_SUCCESS : EXIT_FAILURE;
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}
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VIRT_TEST_MAIN(mymain)
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#else
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int
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main(void)
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{
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return EXIT_AM_SKIP;
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}
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#endif /* WITH_LXC */
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