[NETNS]: Process interface address manipulation routines in the namespace.

[linux-2.6-omap-h63xx.git] / fs / jfs / namei.c

diff --git a/fs/jfs/namei.c b/fs/jfs/namei.c
index 41c20477126237384bcf4421a0a6ae42765adbe7..f8718de3505e9fc56805b5a338fbb244c59e3488 100644 (file)
--- a/fs/jfs/namei.c
+++ b/fs/jfs/namei.c
@@ -20,6 +20,7 @@
 #include <linux/fs.h>
 #include <linux/ctype.h>
 #include <linux/quotaops.h>
+#include <linux/exportfs.h>
 #include "jfs_incore.h"
 #include "jfs_superblock.h"
 #include "jfs_inode.h"
@@ -328,7 +329,7 @@ static int jfs_mkdir(struct inode *dip, struct dentry *dentry, int mode)
  *             dentry  - child directory dentry
  *
  * RETURN:     -EINVAL - if name is . or ..
- *             -EINVAL  - if . or .. exist but are invalid.
+ *             -EINVAL - if . or .. exist but are invalid.
  *             errors from subroutines
  *
  * note:
@@ -517,7 +518,7 @@ static int jfs_unlink(struct inode *dip, struct dentry *dentry)
        inode_dec_link_count(ip);
 
        /*
-        *      commit zero link count object
+        *      commit zero link count object
         */
        if (ip->i_nlink == 0) {
                assert(!test_cflag(COMMIT_Nolink, ip));
@@ -596,7 +597,7 @@ static int jfs_unlink(struct inode *dip, struct dentry *dentry)
 /*
  * NAME:       commitZeroLink()
  *
- * FUNCTION:    for non-directory, called by jfs_remove(),
+ * FUNCTION:   for non-directory, called by jfs_remove(),
  *             truncate a regular file, directory or symbolic
  *             link to zero length. return 0 if type is not
  *             one of these.
@@ -676,7 +677,7 @@ static s64 commitZeroLink(tid_t tid, struct inode *ip)
 /*
  * NAME:       jfs_free_zero_link()
  *
- * FUNCTION:    for non-directory, called by iClose(),
+ * FUNCTION:   for non-directory, called by iClose(),
  *             free resources of a file from cache and WORKING map
  *             for a file previously committed with zero link count
  *             while associated with a pager object,
@@ -855,12 +856,12 @@ static int jfs_link(struct dentry *old_dentry,
  * NAME:       jfs_symlink(dip, dentry, name)
  *
  * FUNCTION:   creates a symbolic link to <symlink> by name <name>
- *                     in directory <dip>
+ *                     in directory <dip>
  *
- * PARAMETER:  dip         - parent directory vnode
- *                     dentry  - dentry of symbolic link
- *                     name    - the path name of the existing object
- *                                   that will be the source of the link
+ * PARAMETER:  dip     - parent directory vnode
+ *             dentry  - dentry of symbolic link
+ *             name    - the path name of the existing object
+ *                       that will be the source of the link
  *
  * RETURN:     errors from subroutines
  *
@@ -1052,9 +1053,9 @@ static int jfs_symlink(struct inode *dip, struct dentry *dentry,
 
 
 /*
- * NAME:        jfs_rename
+ * NAME:       jfs_rename
  *
- * FUNCTION:    rename a file or directory
+ * FUNCTION:   rename a file or directory
  */
 static int jfs_rename(struct inode *old_dir, struct dentry *old_dentry,
               struct inode *new_dir, struct dentry *new_dentry)
@@ -1102,8 +1103,8 @@ static int jfs_rename(struct inode *old_dir, struct dentry *old_dentry,
         * Make sure dest inode number (if any) is what we think it is
         */
        rc = dtSearch(new_dir, &new_dname, &ino, &btstack, JFS_LOOKUP);
-       if (rc == 0) {
-               if ((new_ip == 0) || (ino != new_ip->i_ino)) {
+       if (!rc) {
+               if ((!new_ip) || (ino != new_ip->i_ino)) {
                        rc = -ESTALE;
                        goto out3;
                }
@@ -1331,9 +1332,9 @@ static int jfs_rename(struct inode *old_dir, struct dentry *old_dentry,
 
 
 /*
- * NAME:        jfs_mknod
+ * NAME:       jfs_mknod
  *
- * FUNCTION:    Create a special file (device)
+ * FUNCTION:   Create a special file (device)
  */
 static int jfs_mknod(struct inode *dir, struct dentry *dentry,
                int mode, dev_t rdev)
@@ -1477,6 +1478,40 @@ static struct dentry *jfs_lookup(struct inode *dip, struct dentry *dentry, struc
        return dentry;
 }
 
+static struct inode *jfs_nfs_get_inode(struct super_block *sb,
+               u64 ino, u32 generation)
+{
+       struct inode *inode;
+
+       if (ino == 0)
+               return ERR_PTR(-ESTALE);
+       inode = iget(sb, ino);
+       if (inode == NULL)
+               return ERR_PTR(-ENOMEM);
+
+       if (is_bad_inode(inode) ||
+           (generation && inode->i_generation != generation)) {
+               iput(inode);
+               return ERR_PTR(-ESTALE);
+       }
+
+       return inode;
+}
+
+struct dentry *jfs_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,
+                                   jfs_nfs_get_inode);
+}
+
+struct dentry *jfs_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,
+                                   jfs_nfs_get_inode);
+}
+
 struct dentry *jfs_get_parent(struct dentry *dentry)
 {
        struct super_block *sb = dentry->d_inode->i_sb;