analyze: don't list filesystems among ungrouped that are aliases

There are a bunch of filesystems that actually are just aliases for other filesystems. So far we listed them as "ungrouped", suggesting they should be added to some file system group. But that's not really something needed, since they are after all not file systems in their own right, but aliases only (and usually legacy at that). hence, let's hide them from display (but debug log about them)
2021-11-15 22:43:03 +01:00
parent 7c604e89aa
commit e0f89b0656
1 changed files with 22 additions and 1 deletions
@@ -1944,8 +1944,29 @@ static int dump_filesystems(int argc, char *argv[], void *userdata) {

                        strv_sort(l);

-                        STRV_FOREACH(filesystem, l)
+                        STRV_FOREACH(filesystem, l) {
+                                const statfs_f_type_t *magic;
+                                bool is_primary = false;
+
+                                assert(fs_type_from_string(*filesystem, &magic) >= 0);
+
+                                for (size_t i = 0; magic[i] != 0; i++) {
+                                        const char *primary;
+
+                                        primary = fs_type_to_string(magic[i]);
+                                        assert(primary);
+
+                                        if (streq(primary, *filesystem))
+                                                is_primary = true;
+                                }
+
+                                if (!is_primary) {
+                                        log_debug("Skipping ungrouped file system '%s', because it's an alias for another one.", *filesystem);
+                                        continue;
+                                }
+
                                printf("#   %s\n", *filesystem);
+                        }
                }

                if (k < 0) {