Fixed MTP to work with TWRP

fs/afs/main.c

@@ -0,0 +1,184 @@
+/* AFS client file system
+ *
+ * Copyright (C) 2002,5 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@redhat.com)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/init.h>
+#include <linux/completion.h>
+#include <linux/sched.h>
+#include "internal.h"
+
+MODULE_DESCRIPTION("AFS Client File System");
+MODULE_AUTHOR("Red Hat, Inc.");
+MODULE_LICENSE("GPL");
+
+unsigned afs_debug;
+module_param_named(debug, afs_debug, uint, S_IWUSR | S_IRUGO);
+MODULE_PARM_DESC(debug, "AFS debugging mask");
+
+static char *rootcell;
+
+module_param(rootcell, charp, 0);
+MODULE_PARM_DESC(rootcell, "root AFS cell name and VL server IP addr list");
+
+struct afs_uuid afs_uuid;
+struct workqueue_struct *afs_wq;
+
+/*
+ * get a client UUID
+ */
+static int __init afs_get_client_UUID(void)
+{
+	struct timespec ts;
+	u64 uuidtime;
+	u16 clockseq;
+	int ret;
+
+	/* read the MAC address of one of the external interfaces and construct
+	 * a UUID from it */
+	ret = afs_get_MAC_address(afs_uuid.node, sizeof(afs_uuid.node));
+	if (ret < 0)
+		return ret;
+
+	getnstimeofday(&ts);
+	uuidtime = (u64) ts.tv_sec * 1000 * 1000 * 10;
+	uuidtime += ts.tv_nsec / 100;
+	uuidtime += AFS_UUID_TO_UNIX_TIME;
+	afs_uuid.time_low = uuidtime;
+	afs_uuid.time_mid = uuidtime >> 32;
+	afs_uuid.time_hi_and_version = (uuidtime >> 48) & AFS_UUID_TIMEHI_MASK;
+	afs_uuid.time_hi_and_version |= AFS_UUID_VERSION_TIME;
+
+	get_random_bytes(&clockseq, 2);
+	afs_uuid.clock_seq_low = clockseq;
+	afs_uuid.clock_seq_hi_and_reserved =
+		(clockseq >> 8) & AFS_UUID_CLOCKHI_MASK;
+	afs_uuid.clock_seq_hi_and_reserved |= AFS_UUID_VARIANT_STD;
+
+	_debug("AFS UUID: %08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x",
+	       afs_uuid.time_low,
+	       afs_uuid.time_mid,
+	       afs_uuid.time_hi_and_version,
+	       afs_uuid.clock_seq_hi_and_reserved,
+	       afs_uuid.clock_seq_low,
+	       afs_uuid.node[0], afs_uuid.node[1], afs_uuid.node[2],
+	       afs_uuid.node[3], afs_uuid.node[4], afs_uuid.node[5]);
+
+	return 0;
+}
+
+/*
+ * initialise the AFS client FS module
+ */
+static int __init afs_init(void)
+{
+	int ret;
+
+	printk(KERN_INFO "kAFS: Red Hat AFS client v0.1 registering.\n");
+
+	ret = afs_get_client_UUID();
+	if (ret < 0)
+		return ret;
+
+	/* create workqueue */
+	ret = -ENOMEM;
+	afs_wq = alloc_workqueue("afs", 0, 0);
+	if (!afs_wq)
+		return ret;
+
+	/* register the /proc stuff */
+	ret = afs_proc_init();
+	if (ret < 0)
+		goto error_proc;
+
+#ifdef CONFIG_AFS_FSCACHE
+	/* we want to be able to cache */
+	ret = fscache_register_netfs(&afs_cache_netfs);
+	if (ret < 0)
+		goto error_cache;
+#endif
+
+	/* initialise the cell DB */
+	ret = afs_cell_init(rootcell);
+	if (ret < 0)
+		goto error_cell_init;
+
+	/* initialise the VL update process */
+	ret = afs_vlocation_update_init();
+	if (ret < 0)
+		goto error_vl_update_init;
+
+	/* initialise the callback update process */
+	ret = afs_callback_update_init();
+	if (ret < 0)
+		goto error_callback_update_init;
+
+	/* create the RxRPC transport */
+	ret = afs_open_socket();
+	if (ret < 0)
+		goto error_open_socket;
+
+	/* register the filesystems */
+	ret = afs_fs_init();
+	if (ret < 0)
+		goto error_fs;
+
+	return ret;
+
+error_fs:
+	afs_close_socket();
+error_open_socket:
+	afs_callback_update_kill();
+error_callback_update_init:
+	afs_vlocation_purge();
+error_vl_update_init:
+	afs_cell_purge();
+error_cell_init:
+#ifdef CONFIG_AFS_FSCACHE
+	fscache_unregister_netfs(&afs_cache_netfs);
+error_cache:
+#endif
+	afs_proc_cleanup();
+error_proc:
+	destroy_workqueue(afs_wq);
+	rcu_barrier();
+	printk(KERN_ERR "kAFS: failed to register: %d\n", ret);
+	return ret;
+}
+
+/* XXX late_initcall is kludgy, but the only alternative seems to create
+ * a transport upon the first mount, which is worse. Or is it?
+ */
+late_initcall(afs_init);	/* must be called after net/ to create socket */
+
+/*
+ * clean up on module removal
+ */
+static void __exit afs_exit(void)
+{
+	printk(KERN_INFO "kAFS: Red Hat AFS client v0.1 unregistering.\n");
+
+	afs_fs_exit();
+	afs_kill_lock_manager();
+	afs_close_socket();
+	afs_purge_servers();
+	afs_callback_update_kill();
+	afs_vlocation_purge();
+	destroy_workqueue(afs_wq);
+	afs_cell_purge();
+#ifdef CONFIG_AFS_FSCACHE
+	fscache_unregister_netfs(&afs_cache_netfs);
+#endif
+	afs_proc_cleanup();
+	rcu_barrier();
+}
+
+module_exit(afs_exit);