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virStorageFileChainLookup: Return virStorageSourcePtr

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Returning both virStorageSourcePtr and its path member does not make a
lot of sense.

Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
This commit is contained in:
Jiri Denemark 2014-04-18 15:25:19 +02:00
parent f33eb9c115
commit f5869657c8
4 changed files with 36 additions and 33 deletions
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7
src/qemu/qemu_driver.c
View File

@ -15329,9 +15329,8 @@ qemuDomainBlockCommit(virDomainPtr dom, const char *path, const char *base,
if (!top) {
topSource = &disk->src;
} else if (!(virStorageFileChainLookup(&disk->src,
top, &topSource,
&top_parent))) {
} else if (!(topSource = virStorageFileChainLookup(disk->src.backingStore,
top, &top_parent))) {
goto endjob;
}
if (!topSource->backingStore) {
@ -15343,7 +15342,7 @@ qemuDomainBlockCommit(virDomainPtr dom, const char *path, const char *base,
if (!base && (flags & VIR_DOMAIN_BLOCK_COMMIT_SHALLOW))
baseSource = topSource->backingStore;
else if (!(virStorageFileChainLookup(topSource, base, &baseSource, NULL)))
else if (!(baseSource = virStorageFileChainLookup(topSource, base, NULL)))
goto endjob;
if ((flags & VIR_DOMAIN_BLOCK_COMMIT_SHALLOW) &&

16
src/util/virstoragefile.c
View File

@ -1516,9 +1516,9 @@ int virStorageFileGetSCSIKey(const char *path,
* Since the results point within CHAIN, they must not be
* independently freed. Reports an error and returns NULL if NAME is
* not found. */
const char *
virStorageSourcePtr
virStorageFileChainLookup(virStorageSourcePtr chain,
const char *name, virStorageSourcePtr *meta,
const char *name,
const char **parent)
{
const char *start = chain->path;
@ -1551,24 +1551,22 @@ virStorageFileChainLookup(virStorageSourcePtr chain,
parentDir = chain->relDir;
chain = chain->backingStore;
}
if (!chain)
goto error;
if (meta)
*meta = chain;
return chain->path;
return chain;
error:
if (name)
if (name) {
virReportError(VIR_ERR_INVALID_ARG,
_("could not find image '%s' in chain for '%s'"),
name, start);
else
} else {
virReportError(VIR_ERR_INVALID_ARG,
_("could not find base image in chain for '%s'"),
start);
}
*parent = NULL;
if (meta)
*meta = NULL;
return NULL;
}

7
src/util/virstoragefile.h
View File

@ -281,10 +281,9 @@ virStorageSourcePtr virStorageFileGetMetadataFromBuf(const char *path,
int virStorageFileChainGetBroken(virStorageSourcePtr chain,
char **broken_file);
const char *virStorageFileChainLookup(virStorageSourcePtr chain,
const char *name,
virStorageSourcePtr *meta,
const char **parent)
virStorageSourcePtr virStorageFileChainLookup(virStorageSourcePtr chain,
const char *name,
const char **parent)
ATTRIBUTE_NONNULL(1);
int virStorageFileResize(const char *path,

39
tests/virstoragetest.c
View File

@ -424,16 +424,11 @@ testStorageLookup(const void *args)
{
const struct testLookupData *data = args;
int ret = 0;
const char *actualResult;
virStorageSourcePtr actualMeta;
virStorageSourcePtr result;
const char *actualParent;
/* This function is documented as giving results within chain, but
* as the same string may be duplicated into more than one field,
* we rely on STREQ rather than pointer equality. Test twice to
* ensure optional parameters don't cause NULL deref. */
actualResult = virStorageFileChainLookup(data->chain, data->name,
NULL, NULL);
/* Test twice to ensure optional parameter doesn't cause NULL deref. */
result = virStorageFileChainLookup(data->chain, data->name, NULL);
if (!data->expResult) {
if (!virGetLastError()) {
@ -448,24 +443,36 @@ testStorageLookup(const void *args)
}
}
if (STRNEQ_NULLABLE(data->expResult, actualResult)) {
if (!result) {
if (data->expResult) {
fprintf(stderr, "result 1: expected %s, got NULL\n",
data->expResult);
ret = -1;
}
} else if (STRNEQ_NULLABLE(data->expResult, result->path)) {
fprintf(stderr, "result 1: expected %s, got %s\n",
NULLSTR(data->expResult), NULLSTR(actualResult));
NULLSTR(data->expResult), NULLSTR(result->path));
ret = -1;
}
actualResult = virStorageFileChainLookup(data->chain, data->name,
&actualMeta, &actualParent);
result = virStorageFileChainLookup(data->chain, data->name, &actualParent);
if (!data->expResult)
virResetLastError();
if (STRNEQ_NULLABLE(data->expResult, actualResult)) {
if (!result) {
if (data->expResult) {
fprintf(stderr, "result 2: expected %s, got NULL\n",
data->expResult);
ret = -1;
}
} else if (STRNEQ_NULLABLE(data->expResult, result->path)) {
fprintf(stderr, "result 2: expected %s, got %s\n",
NULLSTR(data->expResult), NULLSTR(actualResult));
NULLSTR(data->expResult), NULLSTR(result->path));
ret = -1;
}
if (data->expMeta != actualMeta) {
if (data->expMeta != result) {
fprintf(stderr, "meta: expected %p, got %p\n",
data->expMeta, actualMeta);
data->expMeta, result);
ret = -1;
}
if (STRNEQ_NULLABLE(data->expParent, actualParent)) {