src: remove usage of strchrnul function

The strchrnul function doesn't exist on Windows and rather
than attempt to implement it, it is simpler to just avoid
its usage, as any callers are easily adapted.
Reviewed-by: NPavel Hrdina <phrdina@redhat.com>
Signed-off-by: NDaniel P. Berrangé <berrange@redhat.com>

src/openvz/openvz_conf.c

@@ -245,7 +245,9 @@ openvzReadNetworkConf(virDomainDefPtr def,
 
             /*parse string*/
             do {
-                char *next = strchrnul(p, ',');
+                char *next = strchr(p, ',');
+                if (!next)
+                    next = strchr(p, '\0');
                 if (STRPREFIX(p, "ifname=")) {
                     /* skip in libvirt */
                 } else if (STRPREFIX(p, "host_ifname=")) {

src/security/security_selinux.c

@@ -721,14 +721,14 @@ virSecuritySELinuxQEMUInitialize(virSecurityManagerPtr mgr)
         goto error;
     }
 
-    ptr = strchrnul(data->domain_context, '\n');
-    if (ptr && *ptr == '\n') {
+    ptr = strchr(data->domain_context, '\n');
+    if (ptr) {
         *ptr = '\0';
         ptr++;
         if (*ptr != '\0') {
             data->alt_domain_context = g_strdup(ptr);
-            ptr = strchrnul(data->alt_domain_context, '\n');
-            if (ptr && *ptr == '\n')
+            ptr = strchr(data->alt_domain_context, '\n');
+            if (ptr)
                 *ptr = '\0';
         }
     }
@@ -743,12 +743,12 @@ virSecuritySELinuxQEMUInitialize(virSecurityManagerPtr mgr)
         goto error;
     }
 
-    ptr = strchrnul(data->file_context, '\n');
-    if (ptr && *ptr == '\n') {
+    ptr = strchr(data->file_context, '\n');
+    if (ptr) {
         *ptr = '\0';
         data->content_context = g_strdup(ptr + 1);
-        ptr = strchrnul(data->content_context, '\n');
-        if (ptr && *ptr == '\n')
+        ptr = strchr(data->content_context, '\n');
+        if (ptr)
             *ptr = '\0';
     }
 

src/util/vircgroup.c

@@ -174,9 +174,13 @@ virCgroupPartitionNeedsEscaping(const char *path)
         if (STRPREFIX(line, "#subsys_name"))
             continue;
 
-        tmp = strchrnul(line, ' ');
-        *tmp = '\0';
-        len = tmp - line;
+        tmp = strchr(line, ' ');
+        if (tmp) {
+            *tmp = '\0';
+            len = tmp - line;
+        } else {
+            len = strlen(line);
+        }
 
         if (STRPREFIX(path, line) &&
             path[len] == '.') {

src/util/virdnsmasq.c

@@ -640,6 +640,7 @@ dnsmasqCapsSet(dnsmasqCapsPtr caps,
 static int
 dnsmasqCapsSetFromBuffer(dnsmasqCapsPtr caps, const char *buf)
 {
+    int len;
     const char *p;
 
     caps->noRefresh = true;
@@ -675,10 +676,14 @@ dnsmasqCapsSetFromBuffer(dnsmasqCapsPtr caps, const char *buf)
     return 0;
 
  fail:
-    p = strchrnul(buf, '\n');
+    p = strchr(buf, '\n');
+    if (!p)
+        len = strlen(buf);
+    else
+        len = p - buf;
     virReportError(VIR_ERR_INTERNAL_ERROR,
                    _("cannot parse %s version number in '%.*s'"),
-                   caps->binaryPath, (int) (p - buf), buf);
+                   caps->binaryPath, len, buf);
     return -1;
 
 }

src/util/virsysinfo.c

@@ -460,18 +460,20 @@ virSysinfoReadARM(void)
     return g_steal_pointer(&ret);
 }
 
-static char *
+static const char *
 virSysinfoParseS390Delimited(const char *base, const char *name, char **value,
                              char delim1, char delim2)
 {
     const char *start;
-    char *end;
+    const char *end;
 
     if (delim1 != delim2 &&
         (start = strstr(base, name)) &&
         (start = strchr(start, delim1))) {
         start += 1;
-        end = strchrnul(start, delim2);
+        end = strchr(start, delim2);
+        if (!end)
+            end = start + strlen(start);
         virSkipSpaces(&start);
         *value = g_strndup(start, end - start);
         virTrimSpaces(*value, NULL);
@@ -480,7 +482,7 @@ virSysinfoParseS390Delimited(const char *base, const char *name, char **value,
     return NULL;
 }
 
-static char *
+static const char *
 virSysinfoParseS390Line(const char *base, const char *name, char **value)
 {
     return virSysinfoParseS390Delimited(base, name, value, ':', '\n');
@@ -521,7 +523,7 @@ virSysinfoParseS390System(const char *base, virSysinfoSystemDefPtr *sysdef)
 static int
 virSysinfoParseS390Processor(const char *base, virSysinfoDefPtr ret)
 {
-    char *tmp_base;
+    const char *tmp_base;
     char *manufacturer = NULL;
     char *procline = NULL;
     char *ncpu = NULL;
@@ -555,7 +557,7 @@ virSysinfoParseS390Processor(const char *base, virSysinfoDefPtr ret)
     }
 
     /* now, for each processor found, extract the frequency information */
-    tmp_base = (char *) base;
+    tmp_base = base;
 
     while ((tmp_base = strstr(tmp_base, "cpu number")) &&
            (tmp_base = virSysinfoParseS390Line(tmp_base, "cpu number", &ncpu))) {

tests/testutils.c

@@ -1200,7 +1200,7 @@ virTestCounterReset(const char *prefix)
     virtTestCounter = 0;
 
     ignore_value(virStrcpyStatic(virtTestCounterStr, prefix));
-    virtTestCounterPrefixEndOffset = strchrnul(virtTestCounterStr, '\0');
+    virtTestCounterPrefixEndOffset = virtTestCounterStr + strlen(virtTestCounterStr);
 }