bcache in userspace; userspace fsck

1 files changed, 143 insertions, 0 deletions

diff --git a/bcache-userspace-shim.c b/bcache-userspace-shim.c
new file mode 100644
index 0000000..c4a5466
--- /dev/null
+++ b/bcache-userspace-shim.c
@@ -0,0 +1,143 @@
+
+#include <errno.h>
+#include <linux/byteorder.h>
+#include <linux/types.h>
+
+/* stub out the bcache code we aren't building: */
+
+struct block_device;
+struct bcache_superblock;
+struct cache;
+struct cache_accounting;
+struct cache_set;
+struct closure;
+struct file;
+struct kobject;
+
+struct kmem_cache *bch_search_cache;
+
+const char *bch_backing_dev_register(struct bcache_superblock *sb)
+{
+	return "not implemented";
+}
+void bch_blockdevs_stop(struct cache_set *c) {}
+int bch_blockdev_volumes_start(struct cache_set *c) { return 0; }
+void bch_attach_backing_devs(struct cache_set *c) {}
+bool bch_is_open_backing_dev(struct block_device *bdev) { return false; }
+void bch_blockdev_exit(void) {}
+int bch_blockdev_init(void) { return 0; }
+
+void bch_fs_exit(void) {}
+int bch_fs_init(void) { return 0; }
+
+const struct file_operations bch_chardev_fops;
+
+void bcache_dev_sectors_dirty_add(struct cache_set *c, unsigned inode,
+				  u64 offset, int nr_sectors) {}
+void bch_writeback_recalc_oldest_gens(struct cache_set *c) {}
+
+void bch_notify_cache_set_read_write(struct cache_set *c) {}
+void bch_notify_cache_set_read_only(struct cache_set *c) {}
+void bch_notify_cache_set_stopped(struct cache_set *c) {}
+void bch_notify_cache_read_write(struct cache *c) {}
+void bch_notify_cache_read_only(struct cache *c) {}
+void bch_notify_cache_added(struct cache *c) {}
+void bch_notify_cache_removing(struct cache *c) {}
+void bch_notify_cache_removed(struct cache *c) {}
+void bch_notify_cache_remove_failed(struct cache *c) {}
+void bch_notify_cache_error(struct cache *c, bool b) {}
+
+int bch_cache_accounting_add_kobjs(struct cache_accounting *acc,
+				   struct kobject *parent) { return 0; }
+void bch_cache_accounting_destroy(struct cache_accounting *acc) {}
+void bch_cache_accounting_init(struct cache_accounting *acc,
+			       struct closure *parent) {}
+
+//#include "acl.c"
+#include "alloc.c"
+#include "bkey.c"
+#include "bkey_methods.c"
+//#include "blockdev.c"
+#include "bset.c"
+#include "btree_cache.c"
+#include "btree_gc.c"
+#include "btree_io.c"
+#include "btree_iter.c"
+#include "btree_update.c"
+#include "buckets.c"
+//#include "chardev.c"
+#include "checksum.c"
+#include "clock.c"
+#include "closure.c"
+#include "compress.c"
+#include "debug.c"
+#include "dirent.c"
+#include "error.c"
+#include "extents.c"
+//#include "fs.c"
+#include "fs-gc.c"
+//#include "fs-io.c"
+#include "inode.c"
+#include "io.c"
+#include "journal.c"
+#include "keybuf.c"
+#include "keylist.c"
+#include "migrate.c"
+#include "move.c"
+#include "movinggc.c"
+//#include "notify.c"
+#include "opts.c"
+//#include "request.c"
+#include "siphash.c"
+#include "six.c"
+//#include "stats.c"
+#include "super.c"
+//#include "sysfs.c"
+#include "tier.c"
+#include "trace.c"
+#include "util.c"
+//#include "writeback.c"
+#include "xattr.c"
+
+#define SHIM_KTYPE(type)						\
+struct kobj_type type ## _ktype = { .release = type ## _release, }
+
+static void bch_cache_set_internal_release(struct kobject *k) {}
+
+static void bch_cache_set_opts_dir_release(struct kobject *k) {}
+
+static void bch_cache_set_time_stats_release(struct kobject *k) {}
+
+SHIM_KTYPE(bch_cache);
+SHIM_KTYPE(bch_cache_set);
+SHIM_KTYPE(bch_cache_set_internal);
+SHIM_KTYPE(bch_cache_set_time_stats);
+SHIM_KTYPE(bch_cache_set_opts_dir);
+
+//#include "tools-util.h"
+
+int cmd_fsck(int argc, char *argv[])
+{
+	DECLARE_COMPLETION_ONSTACK(shutdown);
+	struct cache_set_opts opts = cache_set_opts_empty();
+	struct cache_set *c = NULL;
+	const char *err;
+
+	printf("registering %s...\n", argv[1]);
+
+	err = bch_register_cache_set(argv + 1, argc - 1, opts, &c);
+	if (err) {
+		BUG_ON(c);
+		fprintf(stderr, "error opening %s: %s\n", argv[1], err);
+		exit(EXIT_FAILURE);
+	}
+
+	c->stop_completion = &shutdown;
+	bch_cache_set_stop(c);
+	closure_put(&c->cl);
+
+	/* Killable? */
+	wait_for_completion(&shutdown);
+
+	return 0;
+}