src: remove redundant arg to virKModLoad

All callers except for the test suite pass the same value
for the second arg, so it can be removed, simplifying the
code.

Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>

src/util/virfile.c

@@ -905,7 +905,7 @@ virFileNBDLoadDriver(void)
     } else {
         g_autofree char *errbuf = NULL;
 
-        if ((errbuf = virKModLoad(NBD_DRIVER, true))) {
+        if ((errbuf = virKModLoad(NBD_DRIVER))) {
             virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
                            _("Failed to load nbd module"));
             return false;

src/util/virkmod.c

@@ -30,9 +30,7 @@ doModprobe(const char *opts, const char *module, char **outbuf, char **errbuf)
 {
     g_autoptr(virCommand) cmd = NULL;
 
-    cmd = virCommandNew(MODPROBE);
+    cmd = virCommandNewArgList(MODPROBE, opts, NULL);
-    if (opts)
-        virCommandAddArg(cmd, opts);
     if (module)
         virCommandAddArg(cmd, module);
     if (outbuf)
@@ -83,7 +81,6 @@ virKModConfig(void)
 /**
  * virKModLoad:
  * @module: Name of the module to load
- * @useBlacklist: True if honoring blacklist
  *
  * Attempts to load a kernel module
  *
@@ -92,11 +89,11 @@ virKModConfig(void)
  * by the caller
  */
 char *
-virKModLoad(const char *module, bool useBlacklist)
+virKModLoad(const char *module)
 {
     char *errbuf = NULL;
 
-    if (doModprobe(useBlacklist ? "-b" : NULL, module, NULL, &errbuf) < 0)
+    if (doModprobe("-b", module, NULL, &errbuf) < 0)
         return errbuf;
 
     VIR_FREE(errbuf);

src/util/virkmod.h

@@ -24,7 +24,7 @@
 #include "internal.h"
 
 char *virKModConfig(void);
-char *virKModLoad(const char *, bool)
+char *virKModLoad(const char *)
     ATTRIBUTE_NONNULL(1);
 char *virKModUnload(const char *)
     ATTRIBUTE_NONNULL(1);

src/util/virpci.c

@@ -1013,7 +1013,7 @@ virPCIProbeStubDriver(virPCIStubDriver driver)
     if (!probed) {
         g_autofree char *errbuf = NULL;
         probed = true;
-        if ((errbuf = virKModLoad(drvname, true))) {
+        if ((errbuf = virKModLoad(drvname))) {
             VIR_WARN("failed to load driver %s: %s", drvname, errbuf);
             goto cleanup;
         }

tests/virkmodtest.c

@@ -27,11 +27,7 @@
 # include "virkmod.h"
 # include "virstring.h"
 
-struct testInfo {
+# define MODNAME "vfio-pci"
-    const char *module;
-    const char *exp_cmd;
-    bool useBlacklist;
-};
 
 # define VIR_FROM_THIS VIR_FROM_NONE
 
@@ -87,24 +83,21 @@ checkOutput(virBufferPtr buf, const char *exp_cmd)
 
 
 static int
-testKModLoad(const void *args)
+testKModLoad(const void *args G_GNUC_UNUSED)
 {
     int ret = -1;
     char *errbuf = NULL;
-    const struct testInfo *info = args;
-    const char *module = info->module;
-    bool useBlacklist = info->useBlacklist;
     virBuffer buf = VIR_BUFFER_INITIALIZER;
 
     virCommandSetDryRun(&buf, NULL, NULL);
 
-    errbuf = virKModLoad(module, useBlacklist);
+    errbuf = virKModLoad(MODNAME);
     if (errbuf) {
         fprintf(stderr, "Failed to load, error: %s\n", errbuf);
         goto cleanup;
     }
 
-    if (checkOutput(&buf, info->exp_cmd) < 0)
+    if (checkOutput(&buf, MODPROBE " -b " MODNAME "\n") < 0)
         goto cleanup;
 
     ret = 0;
@@ -117,23 +110,21 @@ testKModLoad(const void *args)
 
 
 static int
-testKModUnload(const void *args)
+testKModUnload(const void *args G_GNUC_UNUSED)
 {
     int ret = -1;
     char *errbuf = NULL;
-    const struct testInfo *info = args;
-    const char *module = info->module;
     virBuffer buf = VIR_BUFFER_INITIALIZER;
 
     virCommandSetDryRun(&buf, NULL, NULL);
 
-    errbuf = virKModUnload(module);
+    errbuf = virKModUnload(MODNAME);
     if (errbuf) {
         fprintf(stderr, "Failed to unload, error: %s\n", errbuf);
         goto cleanup;
     }
 
-    if (checkOutput(&buf, info->exp_cmd) < 0)
+    if (checkOutput(&buf, RMMOD " " MODNAME "\n") < 0)
         goto cleanup;
 
     ret = 0;
@@ -152,23 +143,10 @@ mymain(void)
 
     if (virTestRun("config", testKModConfig, NULL) < 0)
         ret = -1;
-
+    if (virTestRun("load", testKModLoad, NULL) < 0)
-    /* Although we cannot run the command on the host, we can compare
+        ret = -1;
-     * the output of the created command against what we'd expect to be
+    if (virTestRun("unload", testKModUnload, NULL) < 0)
-     * created. So let's at least do that.
+        ret = -1;
-     */
-# define DO_TEST(_name, _cb, _blkflag, _exp_cmd) \
-    do { \
-        struct testInfo data = {.module = "vfio-pci", \
-                                .exp_cmd = _exp_cmd, \
-                                .useBlacklist = _blkflag}; \
-        if (virTestRun(_name, _cb,  &data) < 0) \
-            ret = -1; \
-    } while (0)
-
-    DO_TEST("load", testKModLoad, false, MODPROBE " vfio-pci\n");
-    DO_TEST("unload", testKModUnload, false, RMMOD " vfio-pci\n");
-    DO_TEST("blklist", testKModLoad, true, MODPROBE " -b vfio-pci\n");
 
     return ret == 0 ? EXIT_SUCCESS : EXIT_FAILURE;