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-rw-r--r--fs/cifs/cifsfs.h2
-rw-r--r--fs/cifs/export.c2
-rw-r--r--fs/dcache.c2
-rw-r--r--fs/efs/namei.c36
-rw-r--r--fs/efs/super.c5
-rw-r--r--fs/exportfs/expfs.c360
-rw-r--r--fs/ext2/dir.c44
-rw-r--r--fs/ext2/super.c36
-rw-r--r--fs/ext3/super.c37
-rw-r--r--fs/ext4/super.c37
-rw-r--r--fs/fat/inode.c26
-rw-r--r--fs/gfs2/ops_export.c83
-rw-r--r--fs/gfs2/ops_fstype.h2
-rw-r--r--fs/isofs/export.c69
-rw-r--r--fs/isofs/isofs.h2
-rw-r--r--fs/jfs/jfs_inode.h7
-rw-r--r--fs/jfs/namei.c35
-rw-r--r--fs/jfs/super.c7
-rw-r--r--fs/libfs.c88
-rw-r--r--fs/nfsd/export.c8
-rw-r--r--fs/nfsd/nfsfh.c67
-rw-r--r--fs/ntfs/namei.c77
-rw-r--r--fs/ntfs/ntfs.h2
-rw-r--r--fs/ocfs2/export.c67
-rw-r--r--fs/ocfs2/export.h2
-rw-r--r--fs/reiserfs/inode.c62
-rw-r--r--fs/reiserfs/super.c6
-rw-r--r--fs/xfs/linux-2.6/xfs_export.c206
-rw-r--r--fs/xfs/linux-2.6/xfs_export.h50
-rw-r--r--fs/xfs/linux-2.6/xfs_super.h2
30 files changed, 731 insertions, 698 deletions
diff --git a/fs/cifs/cifsfs.h b/fs/cifs/cifsfs.h
index 0a3ee5a322b..5574ba3ab1f 100644
--- a/fs/cifs/cifsfs.h
+++ b/fs/cifs/cifsfs.h
@@ -103,7 +103,7 @@ extern int cifs_ioctl(struct inode *inode, struct file *filep,
unsigned int command, unsigned long arg);
#ifdef CONFIG_CIFS_EXPERIMENTAL
-extern struct export_operations cifs_export_ops;
+extern const struct export_operations cifs_export_ops;
#endif /* EXPERIMENTAL */
#define CIFS_VERSION "1.51"
diff --git a/fs/cifs/export.c b/fs/cifs/export.c
index d614b91caec..75949d6a5f1 100644
--- a/fs/cifs/export.c
+++ b/fs/cifs/export.c
@@ -53,7 +53,7 @@ static struct dentry *cifs_get_parent(struct dentry *dentry)
return ERR_PTR(-EACCES);
}
-struct export_operations cifs_export_ops = {
+const struct export_operations cifs_export_ops = {
.get_parent = cifs_get_parent,
/* Following five export operations are unneeded so far and can default:
.get_dentry =
diff --git a/fs/dcache.c b/fs/dcache.c
index 2bb3f7ac683..d9ca1e5ceb9 100644
--- a/fs/dcache.c
+++ b/fs/dcache.c
@@ -1479,6 +1479,8 @@ static void switch_names(struct dentry *dentry, struct dentry *target)
* dentry:internal, target:external. Steal target's
* storage and make target internal.
*/
+ memcpy(target->d_iname, dentry->d_name.name,
+ dentry->d_name.len + 1);
dentry->d_name.name = target->d_name.name;
target->d_name.name = target->d_iname;
}
diff --git a/fs/efs/namei.c b/fs/efs/namei.c
index 5276b19423c..f7f407075be 100644
--- a/fs/efs/namei.c
+++ b/fs/efs/namei.c
@@ -10,6 +10,8 @@
#include <linux/string.h>
#include <linux/efs_fs.h>
#include <linux/smp_lock.h>
+#include <linux/exportfs.h>
+
static efs_ino_t efs_find_entry(struct inode *inode, const char *name, int len) {
struct buffer_head *bh;
@@ -75,13 +77,10 @@ struct dentry *efs_lookup(struct inode *dir, struct dentry *dentry, struct namei
return NULL;
}
-struct dentry *efs_get_dentry(struct super_block *sb, void *vobjp)
+static struct inode *efs_nfs_get_inode(struct super_block *sb, u64 ino,
+ u32 generation)
{
- __u32 *objp = vobjp;
- unsigned long ino = objp[0];
- __u32 generation = objp[1];
struct inode *inode;
- struct dentry *result;
if (ino == 0)
return ERR_PTR(-ESTALE);
@@ -91,20 +90,25 @@ struct dentry *efs_get_dentry(struct super_block *sb, void *vobjp)
if (is_bad_inode(inode) ||
(generation && inode->i_generation != generation)) {
- result = ERR_PTR(-ESTALE);
- goto out_iput;
+ iput(inode);
+ return ERR_PTR(-ESTALE);
}
- result = d_alloc_anon(inode);
- if (!result) {
- result = ERR_PTR(-ENOMEM);
- goto out_iput;
- }
- return result;
+ return inode;
+}
- out_iput:
- iput(inode);
- return result;
+struct dentry *efs_fh_to_dentry(struct super_block *sb, struct fid *fid,
+ int fh_len, int fh_type)
+{
+ return generic_fh_to_dentry(sb, fid, fh_len, fh_type,
+ efs_nfs_get_inode);
+}
+
+struct dentry *efs_fh_to_parent(struct super_block *sb, struct fid *fid,
+ int fh_len, int fh_type)
+{
+ return generic_fh_to_parent(sb, fid, fh_len, fh_type,
+ efs_nfs_get_inode);
}
struct dentry *efs_get_parent(struct dentry *child)
diff --git a/fs/efs/super.c b/fs/efs/super.c
index 25d0326c5f1..c79bc627f10 100644
--- a/fs/efs/super.c
+++ b/fs/efs/super.c
@@ -113,8 +113,9 @@ static const struct super_operations efs_superblock_operations = {
.remount_fs = efs_remount,
};
-static struct export_operations efs_export_ops = {
- .get_dentry = efs_get_dentry,
+static const struct export_operations efs_export_ops = {
+ .fh_to_dentry = efs_fh_to_dentry,
+ .fh_to_parent = efs_fh_to_parent,
.get_parent = efs_get_parent,
};
diff --git a/fs/exportfs/expfs.c b/fs/exportfs/expfs.c
index 8adb32a9387..109ab5e44ec 100644
--- a/fs/exportfs/expfs.c
+++ b/fs/exportfs/expfs.c
@@ -1,4 +1,13 @@
-
+/*
+ * Copyright (C) Neil Brown 2002
+ * Copyright (C) Christoph Hellwig 2007
+ *
+ * This file contains the code mapping from inodes to NFS file handles,
+ * and for mapping back from file handles to dentries.
+ *
+ * For details on why we do all the strange and hairy things in here
+ * take a look at Documentation/filesystems/Exporting.
+ */
#include <linux/exportfs.h>
#include <linux/fs.h>
#include <linux/file.h>
@@ -9,32 +18,19 @@
#define dprintk(fmt, args...) do{}while(0)
-static int get_name(struct dentry *dentry, char *name,
+static int get_name(struct vfsmount *mnt, struct dentry *dentry, char *name,
struct dentry *child);
-static struct dentry *exportfs_get_dentry(struct super_block *sb, void *obj)
+static int exportfs_get_name(struct vfsmount *mnt, struct dentry *dir,
+ char *name, struct dentry *child)
{
- struct dentry *result = ERR_PTR(-ESTALE);
-
- if (sb->s_export_op->get_dentry) {
- result = sb->s_export_op->get_dentry(sb, obj);
- if (!result)
- result = ERR_PTR(-ESTALE);
- }
-
- return result;
-}
-
-static int exportfs_get_name(struct dentry *dir, char *name,
- struct dentry *child)
-{
- struct export_operations *nop = dir->d_sb->s_export_op;
+ const struct export_operations *nop = dir->d_sb->s_export_op;
if (nop->get_name)
return nop->get_name(dir, name, child);
else
- return get_name(dir, name, child);
+ return get_name(mnt, dir, name, child);
}
/*
@@ -98,7 +94,7 @@ find_disconnected_root(struct dentry *dentry)
* It may already be, as the flag isn't always updated when connection happens.
*/
static int
-reconnect_path(struct super_block *sb, struct dentry *target_dir)
+reconnect_path(struct vfsmount *mnt, struct dentry *target_dir)
{
char nbuf[NAME_MAX+1];
int noprogress = 0;
@@ -121,7 +117,7 @@ reconnect_path(struct super_block *sb, struct dentry *target_dir)
pd->d_flags &= ~DCACHE_DISCONNECTED;
spin_unlock(&pd->d_lock);
noprogress = 0;
- } else if (pd == sb->s_root) {
+ } else if (pd == mnt->mnt_sb->s_root) {
printk(KERN_ERR "export: Eeek filesystem root is not connected, impossible\n");
spin_lock(&pd->d_lock);
pd->d_flags &= ~DCACHE_DISCONNECTED;
@@ -147,8 +143,8 @@ reconnect_path(struct super_block *sb, struct dentry *target_dir)
struct dentry *npd;
mutex_lock(&pd->d_inode->i_mutex);
- if (sb->s_export_op->get_parent)
- ppd = sb->s_export_op->get_parent(pd);
+ if (mnt->mnt_sb->s_export_op->get_parent)
+ ppd = mnt->mnt_sb->s_export_op->get_parent(pd);
mutex_unlock(&pd->d_inode->i_mutex);
if (IS_ERR(ppd)) {
@@ -161,7 +157,7 @@ reconnect_path(struct super_block *sb, struct dentry *target_dir)
dprintk("%s: find name of %lu in %lu\n", __FUNCTION__,
pd->d_inode->i_ino, ppd->d_inode->i_ino);
- err = exportfs_get_name(ppd, nbuf, pd);
+ err = exportfs_get_name(mnt, ppd, nbuf, pd);
if (err) {
dput(ppd);
dput(pd);
@@ -214,125 +210,6 @@ reconnect_path(struct super_block *sb, struct dentry *target_dir)
return 0;
}
-/**
- * find_exported_dentry - helper routine to implement export_operations->decode_fh
- * @sb: The &super_block identifying the filesystem
- * @obj: An opaque identifier of the object to be found - passed to
- * get_inode
- * @parent: An optional opqaue identifier of the parent of the object.
- * @acceptable: A function used to test possible &dentries to see if they are
- * acceptable
- * @context: A parameter to @acceptable so that it knows on what basis to
- * judge.
- *
- * find_exported_dentry is the central helper routine to enable file systems
- * to provide the decode_fh() export_operation. It's main task is to take
- * an &inode, find or create an appropriate &dentry structure, and possibly
- * splice this into the dcache in the correct place.
- *
- * The decode_fh() operation provided by the filesystem should call
- * find_exported_dentry() with the same parameters that it received except
- * that instead of the file handle fragment, pointers to opaque identifiers
- * for the object and optionally its parent are passed. The default decode_fh
- * routine passes one pointer to the start of the filehandle fragment, and
- * one 8 bytes into the fragment. It is expected that most filesystems will
- * take this approach, though the offset to the parent identifier may well be
- * different.
- *
- * find_exported_dentry() will call get_dentry to get an dentry pointer from
- * the file system. If any &dentry in the d_alias list is acceptable, it will
- * be returned. Otherwise find_exported_dentry() will attempt to splice a new
- * &dentry into the dcache using get_name() and get_parent() to find the
- * appropriate place.
- */
-
-struct dentry *
-find_exported_dentry(struct super_block *sb, void *obj, void *parent,
- int (*acceptable)(void *context, struct dentry *de),
- void *context)
-{
- struct dentry *result, *alias;
- int err = -ESTALE;
-
- /*
- * Attempt to find the inode.
- */
- result = exportfs_get_dentry(sb, obj);
- if (IS_ERR(result))
- return result;
-
- if (S_ISDIR(result->d_inode->i_mode)) {
- if (!(result->d_flags & DCACHE_DISCONNECTED)) {
- if (acceptable(context, result))
- return result;
- err = -EACCES;
- goto err_result;
- }
-
- err = reconnect_path(sb, result);
- if (err)
- goto err_result;
- } else {
- struct dentry *target_dir, *nresult;
- char nbuf[NAME_MAX+1];
-
- alias = find_acceptable_alias(result, acceptable, context);
- if (alias)
- return alias;
-
- if (parent == NULL)
- goto err_result;
-
- target_dir = exportfs_get_dentry(sb,parent);
- if (IS_ERR(target_dir)) {
- err = PTR_ERR(target_dir);
- goto err_result;
- }
-
- err = reconnect_path(sb, target_dir);
- if (err) {
- dput(target_dir);
- goto err_result;
- }
-
- /*
- * As we weren't after a directory, have one more step to go.
- */
- err = exportfs_get_name(target_dir, nbuf, result);
- if (!err) {
- mutex_lock(&target_dir->d_inode->i_mutex);
- nresult = lookup_one_len(nbuf, target_dir,
- strlen(nbuf));
- mutex_unlock(&target_dir->d_inode->i_mutex);
- if (!IS_ERR(nresult)) {
- if (nresult->d_inode) {
- dput(result);
- result = nresult;
- } else
- dput(nresult);
- }
- }
- dput(target_dir);
- }
-
- alias = find_acceptable_alias(result, acceptable, context);
- if (alias)
- return alias;
-
- /* drat - I just cannot find anything acceptable */
- dput(result);
- /* It might be justifiable to return ESTALE here,
- * but the filehandle at-least looks reasonable good
- * and it may just be a permission problem, so returning
- * -EACCESS is safer
- */
- return ERR_PTR(-EACCES);
-
- err_result:
- dput(result);
- return ERR_PTR(err);
-}
-
struct getdents_callback {
char *name; /* name that was found. It already points to a
buffer NAME_MAX+1 is size */
@@ -370,8 +247,8 @@ static int filldir_one(void * __buf, const char * name, int len,
* calls readdir on the parent until it finds an entry with
* the same inode number as the child, and returns that.
*/
-static int get_name(struct dentry *dentry, char *name,
- struct dentry *child)
+static int get_name(struct vfsmount *mnt, struct dentry *dentry,
+ char *name, struct dentry *child)
{
struct inode *dir = dentry->d_inode;
int error;
@@ -387,7 +264,7 @@ static int get_name(struct dentry *dentry, char *name,
/*
* Open the directory ...
*/
- file = dentry_open(dget(dentry), NULL, O_RDONLY);
+ file = dentry_open(dget(dentry), mntget(mnt), O_RDONLY);
error = PTR_ERR(file);
if (IS_ERR(file))
goto out;
@@ -434,100 +311,177 @@ out:
* can be used to check that it is still valid. It places them in the
* filehandle fragment where export_decode_fh expects to find them.
*/
-static int export_encode_fh(struct dentry *dentry, __u32 *fh, int *max_len,
- int connectable)
+static int export_encode_fh(struct dentry *dentry, struct fid *fid,
+ int *max_len, int connectable)
{
struct inode * inode = dentry->d_inode;
int len = *max_len;
- int type = 1;
+ int type = FILEID_INO32_GEN;
if (len < 2 || (connectable && len < 4))
return 255;
len = 2;
- fh[0] = inode->i_ino;
- fh[1] = inode->i_generation;
+ fid->i32.ino = inode->i_ino;
+ fid->i32.gen = inode->i_generation;
if (connectable && !S_ISDIR(inode->i_mode)) {
struct inode *parent;
spin_lock(&dentry->d_lock);
parent = dentry->d_parent->d_inode;
- fh[2] = parent->i_ino;
- fh[3] = parent->i_generation;
+ fid->i32.parent_ino = parent->i_ino;
+ fid->i32.parent_gen = parent->i_generation;
spin_unlock(&dentry->d_lock);
len = 4;
- type = 2;
+ type = FILEID_INO32_GEN_PARENT;
}
*max_len = len;
return type;
}
-
-/**
- * export_decode_fh - default export_operations->decode_fh function
- * @sb: The superblock
- * @fh: pointer to the file handle fragment
- * @fh_len: length of file handle fragment
- * @acceptable: function for testing acceptability of dentrys
- * @context: context for @acceptable
- *
- * This is the default decode_fh() function.
- * a fileid_type of 1 indicates that the filehandlefragment
- * just contains an object identifier understood by get_dentry.
- * a fileid_type of 2 says that there is also a directory
- * identifier 8 bytes in to the filehandlefragement.
- */
-static struct dentry *export_decode_fh(struct super_block *sb, __u32 *fh, int fh_len,
- int fileid_type,
- int (*acceptable)(void *context, struct dentry *de),
- void *context)
-{
- __u32 parent[2];
- parent[0] = parent[1] = 0;
- if (fh_len < 2 || fileid_type > 2)
- return NULL;
- if (fileid_type == 2) {
- if (fh_len > 2) parent[0] = fh[2];
- if (fh_len > 3) parent[1] = fh[3];
- }
- return find_exported_dentry(sb, fh, parent,
- acceptable, context);
-}
-
-int exportfs_encode_fh(struct dentry *dentry, __u32 *fh, int *max_len,
+int exportfs_encode_fh(struct dentry *dentry, struct fid *fid, int *max_len,
int connectable)
{
- struct export_operations *nop = dentry->d_sb->s_export_op;
+ const struct export_operations *nop = dentry->d_sb->s_export_op;
int error;
if (nop->encode_fh)
- error = nop->encode_fh(dentry, fh, max_len, connectable);
+ error = nop->encode_fh(dentry, fid->raw, max_len, connectable);
else
- error = export_encode_fh(dentry, fh, max_len, connectable);
+ error = export_encode_fh(dentry, fid, max_len, connectable);
return error;
}
EXPORT_SYMBOL_GPL(exportfs_encode_fh);
-struct dentry *exportfs_decode_fh(struct vfsmount *mnt, __u32 *fh, int fh_len,
- int fileid_type, int (*acceptable)(void *, struct dentry *),
- void *context)
+struct dentry *exportfs_decode_fh(struct vfsmount *mnt, struct fid *fid,
+ int fh_len, int fileid_type,
+ int (*acceptable)(void *, struct dentry *), void *context)
{
- struct export_operations *nop = mnt->mnt_sb->s_export_op;
- struct dentry *result;
+ const struct export_operations *nop = mnt->mnt_sb->s_export_op;
+ struct dentry *result, *alias;
+ int err;
- if (nop->decode_fh) {
- result = nop->decode_fh(mnt->mnt_sb, fh, fh_len, fileid_type,
- acceptable, context);
+ /*
+ * Try to get any dentry for the given file handle from the filesystem.
+ */
+ result = nop->fh_to_dentry(mnt->mnt_sb, fid, fh_len, fileid_type);
+ if (!result)
+ result = ERR_PTR(-ESTALE);
+ if (IS_ERR(result))
+ return result;
+
+ if (S_ISDIR(result->d_inode->i_mode)) {
+ /*
+ * This request is for a directory.
+ *
+ * On the positive side there is only one dentry for each
+ * directory inode. On the negative side this implies that we
+ * to ensure our dentry is connected all the way up to the
+ * filesystem root.
+ */
+ if (result->d_flags & DCACHE_DISCONNECTED) {
+ err = reconnect_path(mnt, result);
+ if (err)
+ goto err_result;
+ }
+
+ if (!acceptable(context, result)) {
+ err = -EACCES;
+ goto err_result;
+ }
+
+ return result;
} else {
- result = export_decode_fh(mnt->mnt_sb, fh, fh_len, fileid_type,
- acceptable, context);
+ /*
+ * It's not a directory. Life is a little more complicated.
+ */
+ struct dentry *target_dir, *nresult;
+ char nbuf[NAME_MAX+1];
+
+ /*
+ * See if either the dentry we just got from the filesystem
+ * or any alias for it is acceptable. This is always true
+ * if this filesystem is exported without the subtreecheck
+ * option. If the filesystem is exported with the subtree
+ * check option there's a fair chance we need to look at
+ * the parent directory in the file handle and make sure
+ * it's connected to the filesystem root.
+ */
+ alias = find_acceptable_alias(result, acceptable, context);
+ if (alias)
+ return alias;
+
+ /*
+ * Try to extract a dentry for the parent directory from the
+ * file handle. If this fails we'll have to give up.
+ */
+ err = -ESTALE;
+ if (!nop->fh_to_parent)
+ goto err_result;
+
+ target_dir = nop->fh_to_parent(mnt->mnt_sb, fid,
+ fh_len, fileid_type);
+ if (!target_dir)
+ goto err_result;
+ err = PTR_ERR(target_dir);
+ if (IS_ERR(target_dir))
+ goto err_result;
+
+ /*
+ * And as usual we need to make sure the parent directory is
+ * connected to the filesystem root. The VFS really doesn't
+ * like disconnected directories..
+ */
+ err = reconnect_path(mnt, target_dir);
+ if (err) {
+ dput(target_dir);
+ goto err_result;
+ }
+
+ /*
+ * Now that we've got both a well-connected parent and a
+ * dentry for the inode we're after, make sure that our
+ * inode is actually connected to the parent.
+ */
+ err = exportfs_get_name(mnt, target_dir, nbuf, result);
+ if (!err) {
+ mutex_lock(&target_dir->d_inode->i_mutex);
+ nresult = lookup_one_len(nbuf, target_dir,
+ strlen(nbuf));
+ mutex_unlock(&target_dir->d_inode->i_mutex);
+ if (!IS_ERR(nresult)) {
+ if (nresult->d_inode) {
+ dput(result);
+ result = nresult;
+ } else
+ dput(nresult);
+ }
+ }
+
+ /*
+ * At this point we are done with the parent, but it's pinned
+ * by the child dentry anyway.
+ */
+ dput(target_dir);
+
+ /*
+ * And finally make sure the dentry is actually acceptable
+ * to NFSD.
+ */
+ alias = find_acceptable_alias(result, acceptable, context);
+ if (!alias) {
+ err = -EACCES;
+ goto err_result;
+ }
+
+ return alias;
}
- return result;
+ err_result:
+ dput(result);
+ return ERR_PTR(err);
}
EXPORT_SYMBOL_GPL(exportfs_decode_fh);
-EXPORT_SYMBOL(find_exported_dentry);
-
MODULE_LICENSE("GPL");
diff --git a/fs/ext2/dir.c b/fs/ext2/dir.c
index 05d9342bb64..d868e26c15e 100644
--- a/fs/ext2/dir.c
+++ b/fs/ext2/dir.c
@@ -28,6 +28,24 @@
typedef struct ext2_dir_entry_2 ext2_dirent;
+static inline unsigned ext2_rec_len_from_disk(__le16 dlen)
+{
+ unsigned len = le16_to_cpu(dlen);
+
+ if (len == EXT2_MAX_REC_LEN)
+ return 1 << 16;
+ return len;
+}
+
+static inline __le16 ext2_rec_len_to_disk(unsigned len)
+{
+ if (len == (1 << 16))
+ return cpu_to_le16(EXT2_MAX_REC_LEN);
+ else if (len > (1 << 16))
+ BUG();
+ return cpu_to_le16(len);
+}
+
/*
* ext2 uses block-sized chunks. Arguably, sector-sized ones would be
* more robust, but we have what we have
@@ -106,7 +124,7 @@ static void ext2_check_page(struct page *page)
}
for (offs = 0; offs <= limit - EXT2_DIR_REC_LEN(1); offs += rec_len) {
p = (ext2_dirent *)(kaddr + offs);
- rec_len = le16_to_cpu(p->rec_len);
+ rec_len = ext2_rec_len_from_disk(p->rec_len);
if (rec_len < EXT2_DIR_REC_LEN(1))
goto Eshort;
@@ -204,7 +222,8 @@ static inline int ext2_match (int len, const char * const name,
*/
static inline ext2_dirent *ext2_next_entry(ext2_dirent *p)
{
- return (ext2_dirent *)((char*)p + le16_to_cpu(p->rec_len));
+ return (ext2_dirent *)((char *)p +
+ ext2_rec_len_from_disk(p->rec_len));
}
static inline unsigned
@@ -316,7 +335,7 @@ ext2_readdir (struct file * filp, void * dirent, filldir_t filldir)
return 0;
}
}
- filp->f_pos += le16_to_cpu(de->rec_len);
+ filp->f_pos += ext2_rec_len_from_disk(de->rec_len);
}
ext2_put_page(page);
}
@@ -425,7 +444,7 @@ void ext2_set_link(struct inode *dir, struct ext2_dir_entry_2 *de,
{
loff_t pos = page_offset(page) +
(char *) de - (char *) page_address(page);
- unsigned len = le16_to_cpu(de->rec_len);
+ unsigned len = ext2_rec_len_from_disk(de->rec_len);
int err;
lock_page(page);
@@ -482,7 +501,7 @@ int ext2_add_link (struct dentry *dentry, struct inode *inode)
/* We hit i_size */
name_len = 0;
rec_len = chunk_size;
- de->rec_len = cpu_to_le16(chunk_size);
+ de->rec_len = ext2_rec_len_to_disk(chunk_size);
de->inode = 0;
goto got_it;
}
@@ -496,7 +515,7 @@ int ext2_add_link (struct dentry *dentry, struct inode *inode)
if (ext2_match (namelen, name, de))
goto out_unlock;
name_len = EXT2_DIR_REC_LEN(de->name_len);
- rec_len = le16_to_cpu(de->rec_len);
+ rec_len = ext2_rec_len_from_disk(de->rec_len);
if (!de->inode && rec_len >= reclen)
goto got_it;
if (rec_len >= name_len + reclen)
@@ -518,8 +537,8 @@ got_it:
goto out_unlock;
if (de->inode) {
ext2_dirent *de1 = (ext2_dirent *) ((char *) de + name_len);
- de1->rec_len = cpu_to_le16(rec_len - name_len);
- de->rec_len = cpu_to_le16(name_len);
+ de1->rec_len = ext2_rec_len_to_disk(rec_len - name_len);
+ de->rec_len = ext2_rec_len_to_disk(name_len);
de = de1;
}
de->name_len = namelen;
@@ -550,7 +569,8 @@ int ext2_delete_entry (struct ext2_dir_entry_2 * dir, struct page * page )
struct inode *inode = mapping->host;
char *kaddr = page_address(page);
unsigned from = ((char*)dir - kaddr) & ~(ext2_chunk_size(inode)-1);
- unsigned to = ((char*)dir - kaddr) + le16_to_cpu(dir->rec_len);
+ unsigned to = ((char *)dir - kaddr) +
+ ext2_rec_len_from_disk(dir->rec_len);
loff_t pos;
ext2_dirent * pde = NULL;
ext2_dirent * de = (ext2_dirent *) (kaddr + from);
@@ -574,7 +594,7 @@ int ext2_delete_entry (struct ext2_dir_entry_2 * dir, struct page * page )
&page, NULL);
BUG_ON(err);
if (pde)
- pde->rec_len = cpu_to_le16(to - from);
+ pde->rec_len = ext2_rec_len_to_disk(to - from);
dir->inode = 0;
err = ext2_commit_chunk(page, pos, to - from);
inode->i_ctime = inode->i_mtime = CURRENT_TIME_SEC;
@@ -610,14 +630,14 @@ int ext2_make_empty(struct inode *inode, struct inode *parent)
memset(kaddr, 0, chunk_size);
de = (struct ext2_dir_entry_2 *)kaddr;
de->name_len = 1;
- de->rec_len = cpu_to_le16(EXT2_DIR_REC_LEN(1));
+ de->rec_len = ext2_rec_len_to_disk(EXT2_DIR_REC_LEN(1));
memcpy (de->name, ".\0\0", 4);
de->inode = cpu_to_le32(inode->i_ino);
ext2_set_de_type (de, inode);
de = (struct ext2_dir_entry_2 *)(kaddr + EXT2_DIR_REC_LEN(1));
de->name_len = 2;
- de->rec_len = cpu_to_le16(chunk_size - EXT2_DIR_REC_LEN(1));
+ de->rec_len = ext2_rec_len_to_disk(chunk_size - EXT2_DIR_REC_LEN(1));
de->inode = cpu_to_le32(parent->i_ino);
memcpy (de->name, "..\0", 4);
ext2_set_de_type (de, inode);
diff --git a/fs/ext2/super.c b/fs/ext2/super.c
index 77bd5f9262f..154e25f13d7 100644
--- a/fs/ext2/super.c
+++ b/fs/ext2/super.c
@@ -311,13 +311,10 @@ static const struct super_operations ext2_sops = {
#endif
};
-static struct dentry *ext2_get_dentry(struct super_block *sb, void *vobjp)
+static struct inode *ext2_nfs_get_inode(struct super_block *sb,
+ u64 ino, u32 generation)
{
- __u32 *objp = vobjp;
- unsigned long ino = objp[0];
- __u32 generation = objp[1];
struct inode *inode;
- struct dentry *result;
if (ino < EXT2_FIRST_INO(sb) && ino != EXT2_ROOT_INO)
return ERR_PTR(-ESTALE);
@@ -338,15 +335,21 @@ static struct dentry *ext2_get_dentry(struct super_block *sb, void *vobjp)
iput(inode);
return ERR_PTR(-ESTALE);
}
- /* now to find a dentry.
- * If possible, get a well-connected one
- */
- result = d_alloc_anon(inode);
- if (!result) {
- iput(inode);
- return ERR_PTR(-ENOMEM);
- }
- return result;
+ return inode;
+}
+
+static struct dentry *ext2_fh_to_dentry(struct super_block *sb, struct fid *fid,
+ int fh_len, int fh_type)
+{
+ return generic_fh_to_dentry(sb, fid, fh_len, fh_type,
+ ext2_nfs_get_inode);
+}
+
+static struct dentry *ext2_fh_to_parent(struct super_block *sb, struct fid *fid,
+ int fh_len, int fh_type)
+{
+ return generic_fh_to_parent(sb, fid, fh_len, fh_type,
+ ext2_nfs_get_inode);
}
/* Yes, most of these are left as NULL!!
@@ -354,9 +357,10 @@ static struct dentry *ext2_get_dentry(struct super_block *sb, void *vobjp)
* systems, but can be improved upon.
* Currently only get_parent is required.
*/
-static struct export_operations ext2_export_ops = {
+static const struct export_operations ext2_export_ops = {
+ .fh_to_dentry = ext2_fh_to_dentry,
+ .fh_to_parent = ext2_fh_to_parent,
.get_parent = ext2_get_parent,
- .get_dentry = ext2_get_dentry,
};
static unsigned long get_sb_block(void **data)
diff --git a/fs/ext3/super.c b/fs/ext3/super.c
index 81868c0bc40..de55da9e28b 100644
--- a/fs/ext3/super.c
+++ b/fs/ext3/super.c
@@ -631,13 +631,10 @@ static int ext3_show_options(struct seq_file *seq, struct vfsmount *vfs)
}
-static struct dentry *ext3_get_dentry(struct super_block *sb, void *vobjp)
+static struct inode *ext3_nfs_get_inode(struct super_block *sb,
+ u64 ino, u32 generation)
{
- __u32 *objp = vobjp;
- unsigned long ino = objp[0];
- __u32 generation = objp[1];
struct inode *inode;
- struct dentry *result;
if (ino < EXT3_FIRST_INO(sb) && ino != EXT3_ROOT_INO)
return ERR_PTR(-ESTALE);
@@ -660,15 +657,22 @@ static struct dentry *ext3_get_dentry(struct super_block *sb, void *vobjp)
iput(inode);
return ERR_PTR(-ESTALE);
}
- /* now to find a dentry.
- * If possible, get a well-connected one
- */
- result = d_alloc_anon(inode);
- if (!result) {
- iput(inode);
- return ERR_PTR(-ENOMEM);
- }
- return result;
+
+ return inode;
+}
+
+static struct dentry *ext3_fh_to_dentry(struct super_block *sb, struct fid *fid,
+ int fh_len, int fh_type)
+{
+ return generic_fh_to_dentry(sb, fid, fh_len, fh_type,
+ ext3_nfs_get_inode);
+}
+
+static struct dentry *ext3_fh_to_parent(struct super_block *sb, struct fid *fid,
+ int fh_len, int fh_type)
+{
+ return generic_fh_to_parent(sb, fid, fh_len, fh_type,
+ ext3_nfs_get_inode);
}
#ifdef CONFIG_QUOTA
@@ -737,9 +741,10 @@ static const struct super_operations ext3_sops = {
#endif
};
-static struct export_operations ext3_export_ops = {