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maint: prohibit most uses of xmlGetProp

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Making this change makes it easier to spot the memory leaks
that will be fixed in the next patch.

* cfg.mk (sc_prohibit_xmlGetProp): New rule.
* .x-sc_prohibit_xmlGetProp: New exception.
* Makefile.am (EXTRA_DIST): Ship exception file.
* tools/virsh.c (cmdDetachInterface, cmdDetachDisk): Adjust
offenders.
* src/conf/storage_conf.c (virStoragePoolDefParseSource):
Likewise.
* src/conf/network_conf.c (virNetworkDHCPRangeDefParseXML)
(virNetworkIPParseXML): Likewise.
This commit is contained in:
Eric Blake 2010-11-24 13:08:55 -07:00
parent 117246e0f7
commit 416c09bcc0
6 changed files with 48 additions and 40 deletions
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1
.x-sc_prohibit_xmlGetProp Normal file
View File

@ -0,0 +1 @@
^src/util/xml.c$

1
Makefile.am
View File

@ -38,6 +38,7 @@ syntax_check_exceptions = \
.x-sc_prohibit_strncpy \
.x-sc_prohibit_test_minus_ao \
.x-sc_prohibit_VIR_ERR_NO_MEMORY \
.x-sc_prohibit_xmlGetProp \
.x-sc_require_config_h \
.x-sc_require_config_h_first \
.x-sc_trailing_blank \

6
cfg.mk
View File

@ -335,6 +335,12 @@ sc_prohibit_gethostby:
halt='use getaddrinfo, not gethostby*' \
$(_sc_search_regexp)
# raw xmlGetProp requires some nasty casts
sc_prohibit_xmlGetProp:
@prohibit='\<xmlGetProp *\(' \
halt='use virXMLPropString, not xmlGetProp' \
$(_sc_search_regexp)
# Many of the function names below came from this filter:
# git grep -B2 '\<_('|grep -E '\.c- *[[:alpha:]_][[:alnum:]_]* ?\(.*[,;]$' \
# |sed 's/.*\.c- *//'|perl -pe 's/ ?\(.*//'|sort -u \

56
src/conf/network_conf.c
View File

@ -222,24 +222,24 @@ virNetworkDHCPRangeDefParseXML(virNetworkDefPtr def,
virSocketAddr saddr, eaddr;
int range;
if (!(start = (char *) xmlGetProp(cur, BAD_CAST "start"))) {
if (!(start = virXMLPropString(cur, "start"))) {
cur = cur->next;
continue;
}
if (!(end = (char *) xmlGetProp(cur, BAD_CAST "end"))) {
xmlFree(start);
if (!(end = virXMLPropString(cur, "end"))) {
VIR_FREE(start);
cur = cur->next;
continue;
}
if (virSocketParseAddr(start, &saddr, AF_UNSPEC) < 0) {
xmlFree(start);
xmlFree(end);
VIR_FREE(start);
VIR_FREE(end);
return -1;
}
if (virSocketParseAddr(end, &eaddr, AF_UNSPEC) < 0) {
xmlFree(start);
xmlFree(end);
VIR_FREE(start);
VIR_FREE(end);
return -1;
}
@ -248,14 +248,14 @@ virNetworkDHCPRangeDefParseXML(virNetworkDefPtr def,
virNetworkReportError(VIR_ERR_XML_ERROR,
_("dhcp range '%s' to '%s' invalid"),
start, end);
xmlFree(start);
xmlFree(end);
VIR_FREE(start);
VIR_FREE(end);
return -1;
}
if (VIR_REALLOC_N(def->ranges, def->nranges + 1) < 0) {
xmlFree(start);
xmlFree(end);
VIR_FREE(start);
VIR_FREE(end);
virReportOOMError();
return -1;
}
@ -264,19 +264,19 @@ virNetworkDHCPRangeDefParseXML(virNetworkDefPtr def,
def->nranges++;
} else if (cur->type == XML_ELEMENT_NODE &&
xmlStrEqual(cur->name, BAD_CAST "host")) {
xmlChar *mac, *name, *ip;
char *mac, *name, *ip;
unsigned char addr[6];
virSocketAddr inaddr;
mac = xmlGetProp(cur, BAD_CAST "mac");
mac = virXMLPropString(cur, "mac");
if ((mac != NULL) &&
(virParseMacAddr((const char *) mac, &addr[0]) != 0)) {
(virParseMacAddr(mac, &addr[0]) != 0)) {
virNetworkReportError(VIR_ERR_INTERNAL_ERROR,
_("cannot parse MAC address '%s'"),
mac);
VIR_FREE(mac);
}
name = xmlGetProp(cur, BAD_CAST "name");
name = virXMLPropString(cur, "name");
if ((name != NULL) && (!c_isalpha(name[0]))) {
virNetworkReportError(VIR_ERR_INTERNAL_ERROR,
_("cannot use name address '%s'"),
@ -292,8 +292,8 @@ virNetworkDHCPRangeDefParseXML(virNetworkDefPtr def,
cur = cur->next;
continue;
}
ip = xmlGetProp(cur, BAD_CAST "ip");
if (virSocketParseAddr((const char *)ip, &inaddr, AF_UNSPEC) < 0) {
ip = virXMLPropString(cur, "ip");
if (virSocketParseAddr(ip, &inaddr, AF_UNSPEC) < 0) {
VIR_FREE(ip);
VIR_FREE(mac);
VIR_FREE(name);
@ -307,29 +307,29 @@ virNetworkDHCPRangeDefParseXML(virNetworkDefPtr def,
virReportOOMError();
return -1;
}
def->hosts[def->nhosts].mac = (char *)mac;
def->hosts[def->nhosts].name = (char *)name;
def->hosts[def->nhosts].mac = mac;
def->hosts[def->nhosts].name = name;
def->hosts[def->nhosts].ip = inaddr;
def->nhosts++;
} else if (cur->type == XML_ELEMENT_NODE &&
xmlStrEqual(cur->name, BAD_CAST "bootp")) {
xmlChar *file;
xmlChar *server;
char *file;
char *server;
virSocketAddr inaddr;
memset(&inaddr, 0, sizeof(inaddr));
if (!(file = xmlGetProp(cur, BAD_CAST "file"))) {
if (!(file = virXMLPropString(cur, "file"))) {
cur = cur->next;
continue;
}
server = xmlGetProp(cur, BAD_CAST "server");
server = virXMLPropString(cur, "server");
if (server &&
virSocketParseAddr((const char *)server, &inaddr, AF_UNSPEC) < 0)
virSocketParseAddr(server, &inaddr, AF_UNSPEC) < 0)
return -1;
def->bootfile = (char *)file;
def->bootfile = file;
def->bootserver = inaddr;
}
@ -354,14 +354,14 @@ virNetworkIPParseXML(virNetworkDefPtr def,
} else if (cur->type == XML_ELEMENT_NODE &&
xmlStrEqual(cur->name, BAD_CAST "tftp")) {
xmlChar *root;
char *root;
if (!(root = xmlGetProp(cur, BAD_CAST "root"))) {
if (!(root = virXMLPropString(cur, "root"))) {
cur = cur->next;
continue;
}
def->tftproot = (char *)root;
def->tftproot = root;
}
cur = cur->next;

4
src/conf/storage_conf.c
View File

@ -446,14 +446,14 @@ virStoragePoolDefParseSource(xmlXPathContextPtr ctxt,
}
for (i = 0 ; i < nsource ; i++) {
xmlChar *path = xmlGetProp(nodeset[i], BAD_CAST "path");
char *path = virXMLPropString(nodeset[i], "path");
if (path == NULL) {
VIR_FREE(nodeset);
virStorageReportError(VIR_ERR_XML_ERROR,
"%s", _("missing storage pool source device path"));
goto cleanup;
}
source->devices[i].path = (char *)path;
source->devices[i].path = path;
}
source->ndevice = nsource;
}

20
tools/virsh.c
View File

@ -8434,7 +8434,6 @@ cmdDetachInterface(vshControl *ctl, const vshCmd *cmd)
xmlXPathObjectPtr obj=NULL;
xmlXPathContextPtr ctxt = NULL;
xmlNodePtr cur = NULL;
xmlChar *tmp_mac = NULL;
xmlBufferPtr xml_buf = NULL;
char *doc, *mac =NULL, *type;
char buf[64];
@ -8485,10 +8484,11 @@ cmdDetachInterface(vshControl *ctl, const vshCmd *cmd)
for (; i < obj->nodesetval->nodeNr; i++) {
cur = obj->nodesetval->nodeTab[i]->children;
while (cur != NULL) {
if (cur->type == XML_ELEMENT_NODE && xmlStrEqual(cur->name, BAD_CAST "mac")) {
tmp_mac = xmlGetProp(cur, BAD_CAST "address");
diff_mac = virMacAddrCompare ((char *) tmp_mac, mac);
xmlFree(tmp_mac);
if (cur->type == XML_ELEMENT_NODE &&
xmlStrEqual(cur->name, BAD_CAST "mac")) {
char *tmp_mac = virXMLPropString(cur, "address");
diff_mac = virMacAddrCompare (tmp_mac, mac);
VIR_FREE(tmp_mac);
if (!diff_mac) {
goto hit;
}
@ -8689,7 +8689,6 @@ cmdDetachDisk(vshControl *ctl, const vshCmd *cmd)
xmlXPathObjectPtr obj=NULL;
xmlXPathContextPtr ctxt = NULL;
xmlNodePtr cur = NULL;
xmlChar *tmp_tgt = NULL;
xmlBufferPtr xml_buf = NULL;
virDomainPtr dom = NULL;
char *doc, *target;
@ -8734,10 +8733,11 @@ cmdDetachDisk(vshControl *ctl, const vshCmd *cmd)
for (; i < obj->nodesetval->nodeNr; i++) {
cur = obj->nodesetval->nodeTab[i]->children;
while (cur != NULL) {
if (cur->type == XML_ELEMENT_NODE && xmlStrEqual(cur->name, BAD_CAST "target")) {
tmp_tgt = xmlGetProp(cur, BAD_CAST "dev");
diff_tgt = xmlStrEqual(tmp_tgt, BAD_CAST target);
xmlFree(tmp_tgt);
if (cur->type == XML_ELEMENT_NODE &&
xmlStrEqual(cur->name, BAD_CAST "target")) {
char *tmp_tgt = virXMLPropString(cur, "dev");
diff_tgt = STREQ(tmp_tgt, target);
VIR_FREE(tmp_tgt);
if (diff_tgt) {
goto hit;
}