* Copyright (C) 2002 by Ron Minnich <rminnich@lanl.gov>
*
* 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.
+ * it under the terms of the GNU General Public License version 2
+ * as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
*/
#include <linux/kernel.h>
-#include <linux/config.h>
#include <linux/module.h>
#include <linux/errno.h>
#include <linux/fs.h>
#include <linux/file.h>
#include <linux/stat.h>
#include <linux/string.h>
-#include <linux/smp_lock.h>
#include <linux/inet.h>
#include <linux/pagemap.h>
#include <linux/seq_file.h>
#include <linux/mount.h>
#include <linux/idr.h>
+#include <linux/sched.h>
+#include <linux/slab.h>
+#include <net/9p/9p.h>
+#include <net/9p/client.h>
-#include "debug.h"
#include "v9fs.h"
-#include "9p.h"
#include "v9fs_vfs.h"
-#include "conv.h"
#include "fid.h"
-static void v9fs_clear_inode(struct inode *);
-static struct super_operations v9fs_super_ops;
-
-/**
- * v9fs_clear_inode - release an inode
- * @inode: inode to release
- *
- */
-
-static void v9fs_clear_inode(struct inode *inode)
-{
- filemap_fdatawrite(inode->i_mapping);
-}
+static const struct super_operations v9fs_super_ops;
/**
* v9fs_set_super - set the superblock
* v9fs_fill_super - populate superblock with info
* @sb: superblock
* @v9ses: session information
+ * @flags: flags propagated from v9fs_get_sb()
*
*/
static void
v9fs_fill_super(struct super_block *sb, struct v9fs_session_info *v9ses,
- int flags)
+ int flags, void *data)
{
sb->s_maxbytes = MAX_LFS_FILESIZE;
sb->s_blocksize_bits = fls(v9ses->maxdata - 1);
sb->s_blocksize = 1 << sb->s_blocksize_bits;
sb->s_magic = V9FS_MAGIC;
sb->s_op = &v9fs_super_ops;
+ sb->s_bdi = &v9ses->bdi;
sb->s_flags = flags | MS_ACTIVE | MS_SYNCHRONOUS | MS_DIRSYNC |
- MS_NODIRATIME | MS_NOATIME;
+ MS_NOATIME;
+
+ save_mount_options(sb, data);
}
/**
* @flags: mount flags
* @dev_name: device name that was mounted
* @data: mount options
+ * @mnt: mountpoint record to be instantiated
*
*/
-static struct super_block *v9fs_get_sb(struct file_system_type
- *fs_type, int flags,
- const char *dev_name, void *data)
+static int v9fs_get_sb(struct file_system_type *fs_type, int flags,
+ const char *dev_name, void *data,
+ struct vfsmount *mnt)
{
struct super_block *sb = NULL;
- struct v9fs_fcall *fcall = NULL;
struct inode *inode = NULL;
struct dentry *root = NULL;
struct v9fs_session_info *v9ses = NULL;
- struct v9fs_fid *root_fid = NULL;
+ struct p9_wstat *st = NULL;
int mode = S_IRWXUGO | S_ISVTX;
- uid_t uid = current->fsuid;
- gid_t gid = current->fsgid;
- int stat_result = 0;
- int newfid = 0;
+ struct p9_fid *fid;
int retval = 0;
- dprintk(DEBUG_VFS, " \n");
+ P9_DPRINTK(P9_DEBUG_VFS, " \n");
- v9ses = kcalloc(1, sizeof(struct v9fs_session_info), GFP_KERNEL);
+ v9ses = kzalloc(sizeof(struct v9fs_session_info), GFP_KERNEL);
if (!v9ses)
- return ERR_PTR(-ENOMEM);
+ return -ENOMEM;
- if ((newfid = v9fs_session_init(v9ses, dev_name, data)) < 0) {
- dprintk(DEBUG_ERROR, "problem initiating session\n");
- kfree(v9ses);
- return ERR_PTR(newfid);
+ fid = v9fs_session_init(v9ses, dev_name, data);
+ if (IS_ERR(fid)) {
+ retval = PTR_ERR(fid);
+ goto close_session;
}
- sb = sget(fs_type, NULL, v9fs_set_super, v9ses);
+ st = p9_client_stat(fid);
+ if (IS_ERR(st)) {
+ retval = PTR_ERR(st);
+ goto clunk_fid;
+ }
- v9fs_fill_super(sb, v9ses, flags);
+ sb = sget(fs_type, NULL, v9fs_set_super, v9ses);
+ if (IS_ERR(sb)) {
+ retval = PTR_ERR(sb);
+ goto free_stat;
+ }
+ v9fs_fill_super(sb, v9ses, flags, data);
inode = v9fs_get_inode(sb, S_IFDIR | mode);
if (IS_ERR(inode)) {
retval = PTR_ERR(inode);
- goto put_back_sb;
+ goto release_sb;
}
- inode->i_uid = uid;
- inode->i_gid = gid;
-
root = d_alloc_root(inode);
-
if (!root) {
+ iput(inode);
retval = -ENOMEM;
- goto put_back_sb;
+ goto release_sb;
}
sb->s_root = root;
+ root->d_inode->i_ino = v9fs_qid2ino(&st->qid);
- /* Setup the Root Inode */
- root_fid = v9fs_fid_create(root);
- if (root_fid == NULL) {
- retval = -ENOMEM;
- goto put_back_sb;
- }
+ v9fs_stat2inode(st, root->d_inode, sb);
- root_fid->fidopen = 0;
- root_fid->v9ses = v9ses;
-
- stat_result = v9fs_t_stat(v9ses, newfid, &fcall);
- if (stat_result < 0) {
- dprintk(DEBUG_ERROR, "stat error\n");
- v9fs_t_clunk(v9ses, newfid, NULL);
- v9fs_put_idpool(newfid, &v9ses->fidpool);
- } else {
- root_fid->fid = newfid;
- root_fid->qid = fcall->params.rstat.stat->qid;
- root->d_inode->i_ino =
- v9fs_qid2ino(&fcall->params.rstat.stat->qid);
- v9fs_mistat2inode(fcall->params.rstat.stat, root->d_inode, sb);
- }
+ v9fs_fid_add(root, fid);
+ p9stat_free(st);
+ kfree(st);
+
+P9_DPRINTK(P9_DEBUG_VFS, " simple set mount, return 0\n");
+ simple_set_mnt(mnt, sb);
+ return 0;
- kfree(fcall);
+free_stat:
+ p9stat_free(st);
+ kfree(st);
- if (stat_result < 0) {
- retval = stat_result;
- goto put_back_sb;
- }
+clunk_fid:
+ p9_client_clunk(fid);
- return sb;
+close_session:
+ v9fs_session_close(v9ses);
+ kfree(v9ses);
+ return retval;
-put_back_sb:
- /* deactivate_super calls v9fs_kill_super which will frees the rest */
- up_write(&sb->s_umount);
- deactivate_super(sb);
- return ERR_PTR(retval);
+release_sb:
+ p9stat_free(st);
+ kfree(st);
+ deactivate_locked_super(sb);
+ return retval;
}
/**
{
struct v9fs_session_info *v9ses = s->s_fs_info;
- dprintk(DEBUG_VFS, " %p\n", s);
+ P9_DPRINTK(P9_DEBUG_VFS, " %p\n", s);
- v9fs_dentry_release(s->s_root); /* clunk root */
+ if (s->s_root)
+ v9fs_dentry_release(s->s_root); /* clunk root */
kill_anon_super(s);
+ v9fs_session_cancel(v9ses);
v9fs_session_close(v9ses);
kfree(v9ses);
- dprintk(DEBUG_VFS, "exiting kill_super\n");
-}
-
-/**
- * v9fs_show_options - Show mount options in /proc/mounts
- * @m: seq_file to write to
- * @mnt: mount descriptor
- *
- */
-
-static int v9fs_show_options(struct seq_file *m, struct vfsmount *mnt)
-{
- struct v9fs_session_info *v9ses = mnt->mnt_sb->s_fs_info;
-
- if (v9ses->debug != 0)
- seq_printf(m, ",debug=%u", v9ses->debug);
- if (v9ses->port != V9FS_PORT)
- seq_printf(m, ",port=%u", v9ses->port);
- if (v9ses->maxdata != 9000)
- seq_printf(m, ",msize=%u", v9ses->maxdata);
- if (v9ses->afid != ~0)
- seq_printf(m, ",afid=%u", v9ses->afid);
- if (v9ses->proto == PROTO_UNIX)
- seq_puts(m, ",proto=unix");
- if (v9ses->extended == 0)
- seq_puts(m, ",noextend");
- if (v9ses->nodev == 1)
- seq_puts(m, ",nodevmap");
- seq_printf(m, ",name=%s", v9ses->name);
- seq_printf(m, ",aname=%s", v9ses->remotename);
- seq_printf(m, ",uid=%u", v9ses->uid);
- seq_printf(m, ",gid=%u", v9ses->gid);
- return 0;
+ s->s_fs_info = NULL;
+ P9_DPRINTK(P9_DEBUG_VFS, "exiting kill_super\n");
}
static void
v9fs_umount_begin(struct super_block *sb)
{
- struct v9fs_session_info *v9ses = sb->s_fs_info;
+ struct v9fs_session_info *v9ses;
- v9fs_session_cancel(v9ses);
+ v9ses = sb->s_fs_info;
+ v9fs_session_begin_cancel(v9ses);
}
-static struct super_operations v9fs_super_ops = {
+static const struct super_operations v9fs_super_ops = {
+#ifdef CONFIG_9P_FSCACHE
+ .alloc_inode = v9fs_alloc_inode,
+ .destroy_inode = v9fs_destroy_inode,
+#endif
.statfs = simple_statfs,
.clear_inode = v9fs_clear_inode,
- .show_options = v9fs_show_options,
+ .show_options = generic_show_options,
.umount_begin = v9fs_umount_begin,
};
struct file_system_type v9fs_fs_type = {
- .name = "9P",
+ .name = "9p",
.get_sb = v9fs_get_sb,
.kill_sb = v9fs_kill_super,
.owner = THIS_MODULE,
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff