1 files changed, 0 insertions, 446 deletions
diff --git a/ANDROID_3.4.5/fs/lockd/svcsubs.c b/ANDROID_3.4.5/fs/lockd/svcsubs.c
deleted file mode 100644
index 2240d384..00000000
--- a/ANDROID_3.4.5/fs/lockd/svcsubs.c
+++ /dev/null
@@ -1,446 +0,0 @@
-/*
- * linux/fs/lockd/svcsubs.c
- *
- * Various support routines for the NLM server.
- *
- * Copyright (C) 1996, Olaf Kirch <okir@monad.swb.de>
- */
-
-#include <linux/types.h>
-#include <linux/string.h>
-#include <linux/time.h>
-#include <linux/in.h>
-#include <linux/slab.h>
-#include <linux/mutex.h>
-#include <linux/sunrpc/svc.h>
-#include <linux/sunrpc/clnt.h>
-#include <linux/nfsd/nfsfh.h>
-#include <linux/nfsd/export.h>
-#include <linux/lockd/lockd.h>
-#include <linux/lockd/share.h>
-#include <linux/module.h>
-#include <linux/mount.h>
-
-#define NLMDBG_FACILITY		NLMDBG_SVCSUBS
-
-
-/*
- * Global file hash table
- */
-#define FILE_HASH_BITS		7
-#define FILE_NRHASH		(1<<FILE_HASH_BITS)
-static struct hlist_head	nlm_files[FILE_NRHASH];
-static DEFINE_MUTEX(nlm_file_mutex);
-
-#ifdef NFSD_DEBUG
-static inline void nlm_debug_print_fh(char *msg, struct nfs_fh *f)
-{
-	u32 *fhp = (u32*)f->data;
-
-	/* print the first 32 bytes of the fh */
-	dprintk("lockd: %s (%08x %08x %08x %08x %08x %08x %08x %08x)\n",
-		msg, fhp[0], fhp[1], fhp[2], fhp[3],
-		fhp[4], fhp[5], fhp[6], fhp[7]);
-}
-
-static inline void nlm_debug_print_file(char *msg, struct nlm_file *file)
-{
-	struct inode *inode = file->f_file->f_path.dentry->d_inode;
-
-	dprintk("lockd: %s %s/%ld\n",
-		msg, inode->i_sb->s_id, inode->i_ino);
-}
-#else
-static inline void nlm_debug_print_fh(char *msg, struct nfs_fh *f)
-{
-	return;
-}
-
-static inline void nlm_debug_print_file(char *msg, struct nlm_file *file)
-{
-	return;
-}
-#endif
-
-static inline unsigned int file_hash(struct nfs_fh *f)
-{
-	unsigned int tmp=0;
-	int i;
-	for (i=0; i<NFS2_FHSIZE;i++)
-		tmp += f->data[i];
-	return tmp & (FILE_NRHASH - 1);
-}
-
-/*
- * Lookup file info. If it doesn't exist, create a file info struct
- * and open a (VFS) file for the given inode.
- *
- * FIXME:
- * Note that we open the file O_RDONLY even when creating write locks.
- * This is not quite right, but for now, we assume the client performs
- * the proper R/W checking.
- */
-__be32
-nlm_lookup_file(struct svc_rqst *rqstp, struct nlm_file **result,
-					struct nfs_fh *f)
-{
-	struct hlist_node *pos;
-	struct nlm_file	*file;
-	unsigned int	hash;
-	__be32		nfserr;
-
-	nlm_debug_print_fh("nlm_lookup_file", f);
-
-	hash = file_hash(f);
-
-	/* Lock file table */
-	mutex_lock(&nlm_file_mutex);
-
-	hlist_for_each_entry(file, pos, &nlm_files[hash], f_list)
-		if (!nfs_compare_fh(&file->f_handle, f))
-			goto found;
-
-	nlm_debug_print_fh("creating file for", f);
-
-	nfserr = nlm_lck_denied_nolocks;
-	file = kzalloc(sizeof(*file), GFP_KERNEL);
-	if (!file)
-		goto out_unlock;
-
-	memcpy(&file->f_handle, f, sizeof(struct nfs_fh));
-	mutex_init(&file->f_mutex);
-	INIT_HLIST_NODE(&file->f_list);
-	INIT_LIST_HEAD(&file->f_blocks);
-
-	/* Open the file. Note that this must not sleep for too long, else
-	 * we would lock up lockd:-) So no NFS re-exports, folks.
-	 *
-	 * We have to make sure we have the right credential to open
-	 * the file.
-	 */
-	if ((nfserr = nlmsvc_ops->fopen(rqstp, f, &file->f_file)) != 0) {
-		dprintk("lockd: open failed (error %d)\n", nfserr);
-		goto out_free;
-	}
-
-	hlist_add_head(&file->f_list, &nlm_files[hash]);
-
-found:
-	dprintk("lockd: found file %p (count %d)\n", file, file->f_count);
-	*result = file;
-	file->f_count++;
-	nfserr = 0;
-
-out_unlock:
-	mutex_unlock(&nlm_file_mutex);
-	return nfserr;
-
-out_free:
-	kfree(file);
-	goto out_unlock;
-}
-
-/*
- * Delete a file after having released all locks, blocks and shares
- */
-static inline void
-nlm_delete_file(struct nlm_file *file)
-{
-	nlm_debug_print_file("closing file", file);
-	if (!hlist_unhashed(&file->f_list)) {
-		hlist_del(&file->f_list);
-		nlmsvc_ops->fclose(file->f_file);
-		kfree(file);
-	} else {
-		printk(KERN_WARNING "lockd: attempt to release unknown file!\n");
-	}
-}
-
-/*
- * Loop over all locks on the given file and perform the specified
- * action.
- */
-static int
-nlm_traverse_locks(struct nlm_host *host, struct nlm_file *file,
-			nlm_host_match_fn_t match)
-{
-	struct inode	 *inode = nlmsvc_file_inode(file);
-	struct file_lock *fl;
-	struct nlm_host	 *lockhost;
-
-again:
-	file->f_locks = 0;
-	lock_flocks(); /* protects i_flock list */
-	for (fl = inode->i_flock; fl; fl = fl->fl_next) {
-		if (fl->fl_lmops != &nlmsvc_lock_operations)
-			continue;
-
-		/* update current lock count */
-		file->f_locks++;
-
-		lockhost = (struct nlm_host *) fl->fl_owner;
-		if (match(lockhost, host)) {
-			struct file_lock lock = *fl;
-
-			unlock_flocks();
-			lock.fl_type  = F_UNLCK;
-			lock.fl_start = 0;
-			lock.fl_end   = OFFSET_MAX;
-			if (vfs_lock_file(file->f_file, F_SETLK, &lock, NULL) < 0) {
-				printk("lockd: unlock failure in %s:%d\n",
-						__FILE__, __LINE__);
-				return 1;
-			}
-			goto again;
-		}
-	}
-	unlock_flocks();
-
-	return 0;
-}
-
-static int
-nlmsvc_always_match(void *dummy1, struct nlm_host *dummy2)
-{
-	return 1;
-}
-
-/*
- * Inspect a single file
- */
-static inline int
-nlm_inspect_file(struct nlm_host *host, struct nlm_file *file, nlm_host_match_fn_t match)
-{
-	nlmsvc_traverse_blocks(host, file, match);
-	nlmsvc_traverse_shares(host, file, match);
-	return nlm_traverse_locks(host, file, match);
-}
-
-/*
- * Quick check whether there are still any locks, blocks or
- * shares on a given file.
- */
-static inline int
-nlm_file_inuse(struct nlm_file *file)
-{
-	struct inode	 *inode = nlmsvc_file_inode(file);
-	struct file_lock *fl;
-
-	if (file->f_count || !list_empty(&file->f_blocks) || file->f_shares)
-		return 1;
-
-	lock_flocks();
-	for (fl = inode->i_flock; fl; fl = fl->fl_next) {
-		if (fl->fl_lmops == &nlmsvc_lock_operations) {
-			unlock_flocks();
-			return 1;
-		}
-	}
-	unlock_flocks();
-	file->f_locks = 0;
-	return 0;
-}
-
-/*
- * Loop over all files in the file table.
- */
-static int
-nlm_traverse_files(void *data, nlm_host_match_fn_t match,
-		int (*is_failover_file)(void *data, struct nlm_file *file))
-{
-	struct hlist_node *pos, *next;
-	struct nlm_file	*file;
-	int i, ret = 0;
-
-	mutex_lock(&nlm_file_mutex);
-	for (i = 0; i < FILE_NRHASH; i++) {
-		hlist_for_each_entry_safe(file, pos, next, &nlm_files[i], f_list) {
-			if (is_failover_file && !is_failover_file(data, file))
-				continue;
-			file->f_count++;
-			mutex_unlock(&nlm_file_mutex);
-
-			/* Traverse locks, blocks and shares of this file
-			 * and update file->f_locks count */
-			if (nlm_inspect_file(data, file, match))
-				ret = 1;
-
-			mutex_lock(&nlm_file_mutex);
-			file->f_count--;
-			/* No more references to this file. Let go of it. */
-			if (list_empty(&file->f_blocks) && !file->f_locks
-			 && !file->f_shares && !file->f_count) {
-				hlist_del(&file->f_list);
-				nlmsvc_ops->fclose(file->f_file);
-				kfree(file);
-			}
-		}
-	}
-	mutex_unlock(&nlm_file_mutex);
-	return ret;
-}
-
-/*
- * Release file. If there are no more remote locks on this file,
- * close it and free the handle.
- *
- * Note that we can't do proper reference counting without major
- * contortions because the code in fs/locks.c creates, deletes and
- * splits locks without notification. Our only way is to walk the
- * entire lock list each time we remove a lock.
- */
-void
-nlm_release_file(struct nlm_file *file)
-{
-	dprintk("lockd: nlm_release_file(%p, ct = %d)\n",
-				file, file->f_count);
-
-	/* Lock file table */
-	mutex_lock(&nlm_file_mutex);
-
-	/* If there are no more locks etc, delete the file */
-	if (--file->f_count == 0 && !nlm_file_inuse(file))
-		nlm_delete_file(file);
-
-	mutex_unlock(&nlm_file_mutex);
-}
-
-/*
- * Helpers function for resource traversal
- *
- * nlmsvc_mark_host:
- *	used by the garbage collector; simply sets h_inuse.
- *	Always returns 0.
- *
- * nlmsvc_same_host:
- *	returns 1 iff the two hosts match. Used to release
- *	all resources bound to a specific host.
- *
- * nlmsvc_is_client:
- *	returns 1 iff the host is a client.
- *	Used by nlmsvc_invalidate_all
- */
-static int
-nlmsvc_mark_host(void *data, struct nlm_host *dummy)
-{
-	struct nlm_host *host = data;
-
-	host->h_inuse = 1;
-	return 0;
-}
-
-static int
-nlmsvc_same_host(void *data, struct nlm_host *other)
-{
-	struct nlm_host *host = data;
-
-	return host == other;
-}
-
-static int
-nlmsvc_is_client(void *data, struct nlm_host *dummy)
-{
-	struct nlm_host *host = data;
-
-	if (host->h_server) {
-		/* we are destroying locks even though the client
-		 * hasn't asked us too, so don't unmonitor the
-		 * client
-		 */
-		if (host->h_nsmhandle)
-			host->h_nsmhandle->sm_sticky = 1;
-		return 1;
-	} else
-		return 0;
-}
-
-/*
- * Mark all hosts that still hold resources
- */
-void
-nlmsvc_mark_resources(void)
-{
-	dprintk("lockd: nlmsvc_mark_resources\n");
-	nlm_traverse_files(NULL, nlmsvc_mark_host, NULL);
-}
-
-/*
- * Release all resources held by the given client
- */
-void
-nlmsvc_free_host_resources(struct nlm_host *host)
-{
-	dprintk("lockd: nlmsvc_free_host_resources\n");
-
-	if (nlm_traverse_files(host, nlmsvc_same_host, NULL)) {
-		printk(KERN_WARNING
-			"lockd: couldn't remove all locks held by %s\n",
-			host->h_name);
-		BUG();
-	}
-}
-
-/**
- * nlmsvc_invalidate_all - remove all locks held for clients
- *
- * Release all locks held by NFS clients.
- *
- */
-void
-nlmsvc_invalidate_all(void)
-{
-	/*
-	 * Previously, the code would call
-	 * nlmsvc_free_host_resources for each client in
-	 * turn, which is about as inefficient as it gets.
-	 * Now we just do it once in nlm_traverse_files.
-	 */
-	nlm_traverse_files(NULL, nlmsvc_is_client, NULL);
-}
-
-static int
-nlmsvc_match_sb(void *datap, struct nlm_file *file)
-{
-	struct super_block *sb = datap;
-
-	return sb == file->f_file->f_path.dentry->d_sb;
-}
-
-/**
- * nlmsvc_unlock_all_by_sb - release locks held on this file system
- * @sb: super block
- *
- * Release all locks held by clients accessing this file system.
- */
-int
-nlmsvc_unlock_all_by_sb(struct super_block *sb)
-{
-	int ret;
-
-	ret = nlm_traverse_files(sb, nlmsvc_always_match, nlmsvc_match_sb);
-	return ret ? -EIO : 0;
-}
-EXPORT_SYMBOL_GPL(nlmsvc_unlock_all_by_sb);
-
-static int
-nlmsvc_match_ip(void *datap, struct nlm_host *host)
-{
-	return rpc_cmp_addr(nlm_srcaddr(host), datap);
-}
-
-/**
- * nlmsvc_unlock_all_by_ip - release local locks by IP address
- * @server_addr: server's IP address as seen by clients
- *
- * Release all locks held by clients accessing this host
- * via the passed in IP address.
- */
-int
-nlmsvc_unlock_all_by_ip(struct sockaddr *server_addr)
-{
-	int ret;
-
-	ret = nlm_traverse_files(server_addr, nlmsvc_match_ip, NULL);
-	return ret ? -EIO : 0;
-}
-EXPORT_SYMBOL_GPL(nlmsvc_unlock_all_by_ip);