libkmod-module: probe: add flag to ignore commands

diff --git a/libkmod/libkmod-module.c b/libkmod/libkmod-module.c
index d81725f..f320fc1 100644 (file)
--- a/libkmod/libkmod-module.c
+++ b/libkmod/libkmod-module.c
@@ -74,6 +74,12 @@ struct kmod_module {
         * dependency loops
         */
        bool visited : 1;
+
+       /*
+        * set by kmod_module_get_probe_list: indicates for probe_insert()
+        * whether the module's command and softdep should be ignored
+        */
+       bool ignorecmd : 1;
 };
 
 static inline const char *path_join(const char *path, size_t prefixlen,
@@ -945,6 +951,7 @@ static char *module_options_concat(const char *opt, const char *xopt)
 }
 
 static int __kmod_module_get_probe_list(struct kmod_module *mod,
+                                               bool ignorecmd,
                                                struct kmod_list **list);
 
 /* re-entrant */
@@ -962,7 +969,7 @@ static int __kmod_module_fill_softdep(struct kmod_module *mod,
 
        kmod_list_foreach(l, pre) {
                struct kmod_module *m = l->data;
-               err = __kmod_module_get_probe_list(m, list);
+               err = __kmod_module_get_probe_list(m, false, list);
                if (err < 0)
                        goto fail;
        }
@@ -975,10 +982,11 @@ static int __kmod_module_fill_softdep(struct kmod_module *mod,
        }
        *list = l;
        mod->visited = true;
+       mod->ignorecmd = (pre != NULL || post != NULL);
 
        kmod_list_foreach(l, post) {
                struct kmod_module *m = l->data;
-               err = __kmod_module_get_probe_list(m, list);
+               err = __kmod_module_get_probe_list(m, false, list);
                if (err < 0)
                        goto fail;
        }
@@ -992,6 +1000,7 @@ fail:
 
 /* re-entrant */
 static int __kmod_module_get_probe_list(struct kmod_module *mod,
+                                               bool ignorecmd,
                                                struct kmod_list **list)
 {
        struct kmod_list *dep, *l;
@@ -1004,31 +1013,32 @@ static int __kmod_module_get_probe_list(struct kmod_module *mod,
        }
 
        dep = kmod_module_get_dependencies(mod);
-
-       /*
-        * Use its softdeps and commands: just put it in the end of the list
-        */
-       l = kmod_list_append(dep, kmod_module_ref(mod));
-       if (l == NULL) {
-               kmod_module_unref(mod);
-               err = -ENOMEM;
-               goto finish;
-       }
-       dep = l;
-
        kmod_list_foreach(l, dep) {
                struct kmod_module *m = l->data;
                err = __kmod_module_fill_softdep(m, list);
                if (err < 0)
-                       break;
+                       goto finish;
        }
 
+       if (ignorecmd) {
+               l = kmod_list_append(*list, kmod_module_ref(mod));
+               if (l == NULL) {
+                       kmod_module_unref(mod);
+                       err = -ENOMEM;
+                       goto finish;
+               }
+               *list = l;
+               mod->ignorecmd = true;
+       } else
+               err = __kmod_module_fill_softdep(mod, list);
+
 finish:
        kmod_module_unref_list(dep);
        return err;
 }
 
 static int kmod_module_get_probe_list(struct kmod_module *mod,
+                                               bool ignorecmd,
                                                struct kmod_list **list)
 {
        int err;
@@ -1041,7 +1051,7 @@ static int kmod_module_get_probe_list(struct kmod_module *mod,
         */
        kmod_set_modules_visited(mod->ctx, false);
 
-       err = __kmod_module_get_probe_list(mod, list);
+       err = __kmod_module_get_probe_list(mod, ignorecmd, list);
        if (err < 0) {
                kmod_module_unref_list(*list);
                *list = NULL;
@@ -1092,7 +1102,8 @@ KMOD_EXPORT int kmod_module_probe_insert_module(struct kmod_module *mod,
                        return err;
        }
 
-       err = kmod_module_get_probe_list(mod, &list);
+       err = kmod_module_get_probe_list(mod,
+                               !!(flags & KMOD_PROBE_IGNORE_COMMAND), &list);
        if (err < 0)
                return err;
 
@@ -1121,7 +1132,7 @@ KMOD_EXPORT int kmod_module_probe_insert_module(struct kmod_module *mod,
                char *options = module_options_concat(moptions,
                                        m == mod ? extra_options : NULL);
 
-               if (cmd != NULL) {
+               if (cmd != NULL && !m->ignorecmd) {
                        if (flags & KMOD_PROBE_STOP_ON_COMMAND) {
                                DBG(mod->ctx, "Stopping on '%s': "
                                        "install command\n", m->name);

diff --git a/libkmod/libkmod.h b/libkmod/libkmod.h
index afc1c17..b377150 100644 (file)
--- a/libkmod/libkmod.h
+++ b/libkmod/libkmod.h
@@ -133,6 +133,7 @@ enum kmod_probe {
        KMOD_PROBE_APPLY_BLACKLIST = 0x08,
        KMOD_PROBE_STOP_ON_DEP_FAILURE = 0x0F,
        KMOD_PROBE_STOP_ON_COMMAND = 0x10,
+       KMOD_PROBE_IGNORE_COMMAND = 0x20,
 };
 
 /*