mirror of https://gitee.com/openkylin/linux.git
142 lines
3.2 KiB
C
142 lines
3.2 KiB
C
/* AFS client file system
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*
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* Copyright (C) 2002,5 Red Hat, Inc. All Rights Reserved.
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* Written by David Howells (dhowells@redhat.com)
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*/
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#include <linux/module.h>
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#include <linux/moduleparam.h>
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#include <linux/init.h>
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#include <linux/completion.h>
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#include <linux/sched.h>
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#include <linux/random.h>
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#define CREATE_TRACE_POINTS
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#include "internal.h"
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MODULE_DESCRIPTION("AFS Client File System");
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MODULE_AUTHOR("Red Hat, Inc.");
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MODULE_LICENSE("GPL");
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unsigned afs_debug;
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module_param_named(debug, afs_debug, uint, S_IWUSR | S_IRUGO);
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MODULE_PARM_DESC(debug, "AFS debugging mask");
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static char *rootcell;
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module_param(rootcell, charp, 0);
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MODULE_PARM_DESC(rootcell, "root AFS cell name and VL server IP addr list");
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struct afs_uuid afs_uuid;
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struct workqueue_struct *afs_wq;
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/*
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* initialise the AFS client FS module
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*/
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static int __init afs_init(void)
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{
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int ret;
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printk(KERN_INFO "kAFS: Red Hat AFS client v0.1 registering.\n");
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generate_random_uuid((unsigned char *)&afs_uuid);
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/* create workqueue */
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ret = -ENOMEM;
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afs_wq = alloc_workqueue("afs", 0, 0);
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if (!afs_wq)
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return ret;
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/* register the /proc stuff */
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ret = afs_proc_init();
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if (ret < 0)
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goto error_proc;
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#ifdef CONFIG_AFS_FSCACHE
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/* we want to be able to cache */
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ret = fscache_register_netfs(&afs_cache_netfs);
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if (ret < 0)
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goto error_cache;
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#endif
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/* initialise the cell DB */
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ret = afs_cell_init(rootcell);
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if (ret < 0)
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goto error_cell_init;
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/* initialise the VL update process */
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ret = afs_vlocation_update_init();
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if (ret < 0)
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goto error_vl_update_init;
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/* initialise the callback update process */
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ret = afs_callback_update_init();
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if (ret < 0)
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goto error_callback_update_init;
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/* create the RxRPC transport */
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ret = afs_open_socket();
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if (ret < 0)
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goto error_open_socket;
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/* register the filesystems */
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ret = afs_fs_init();
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if (ret < 0)
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goto error_fs;
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return ret;
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error_fs:
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afs_close_socket();
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error_open_socket:
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afs_callback_update_kill();
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error_callback_update_init:
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afs_vlocation_purge();
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error_vl_update_init:
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afs_cell_purge();
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error_cell_init:
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#ifdef CONFIG_AFS_FSCACHE
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fscache_unregister_netfs(&afs_cache_netfs);
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error_cache:
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#endif
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afs_proc_cleanup();
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error_proc:
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destroy_workqueue(afs_wq);
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rcu_barrier();
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printk(KERN_ERR "kAFS: failed to register: %d\n", ret);
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return ret;
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}
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/* XXX late_initcall is kludgy, but the only alternative seems to create
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* a transport upon the first mount, which is worse. Or is it?
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*/
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late_initcall(afs_init); /* must be called after net/ to create socket */
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/*
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* clean up on module removal
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*/
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static void __exit afs_exit(void)
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{
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printk(KERN_INFO "kAFS: Red Hat AFS client v0.1 unregistering.\n");
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afs_fs_exit();
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afs_kill_lock_manager();
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afs_close_socket();
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afs_purge_servers();
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afs_callback_update_kill();
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afs_vlocation_purge();
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destroy_workqueue(afs_wq);
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afs_cell_purge();
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#ifdef CONFIG_AFS_FSCACHE
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fscache_unregister_netfs(&afs_cache_netfs);
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#endif
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afs_proc_cleanup();
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rcu_barrier();
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}
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module_exit(afs_exit);
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