[XFS] remove bhv_vname_t and xfs_rename code

SGI-PV: 976035
SGI-Modid: xfs-linux-melb:xfs-kern:30804a

Signed-off-by: Barry Naujok <bnaujok@sgi.com>
Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>

fs/xfs/linux-2.6/xfs_export.c

@@ -22,6 +22,7 @@
 #include "xfs_trans.h"
 #include "xfs_sb.h"
 #include "xfs_ag.h"
+#include "xfs_dir2.h"
 #include "xfs_dmapi.h"
 #include "xfs_mount.h"
 #include "xfs_export.h"
@@ -30,8 +31,6 @@
 #include "xfs_inode.h"
 #include "xfs_vfsops.h"
 
-static struct dentry dotdot = { .d_name.name = "..", .d_name.len = 2, };
-
 /*
  * Note that we only accept fileids which are long enough rather than allow
  * the parent generation number to default to zero.  XFS considers zero a
@@ -216,7 +215,7 @@ xfs_fs_get_parent(
 	struct xfs_inode	*cip;
 	struct dentry		*parent;
 
-	error = xfs_lookup(XFS_I(child->d_inode), &dotdot, &cip);
+	error = xfs_lookup(XFS_I(child->d_inode), &xfs_name_dotdot, &cip);
 	if (unlikely(error))
 		return ERR_PTR(-error);
 

fs/xfs/linux-2.6/xfs_iops.c

@@ -239,6 +239,15 @@ xfs_init_security(
 	return error;
 }
 
+static void
+xfs_dentry_to_name(
+	struct xfs_name	*namep,
+	struct dentry	*dentry)
+{
+	namep->name = dentry->d_name.name;
+	namep->len = dentry->d_name.len;
+}
+
 STATIC void
 xfs_cleanup_inode(
 	struct inode	*dir,
@@ -246,20 +255,19 @@ xfs_cleanup_inode(
 	struct dentry	*dentry,
 	int		mode)
 {
-	struct dentry   teardown = {};
+	struct xfs_name	teardown;
 
 	/* Oh, the horror.
 	 * If we can't add the ACL or we fail in
 	 * xfs_init_security we must back out.
 	 * ENOSPC can hit here, among other things.
 	 */
-	teardown.d_inode = inode;
-	teardown.d_name = dentry->d_name;
+	xfs_dentry_to_name(&teardown, dentry);
 
 	if (S_ISDIR(mode))
-		xfs_rmdir(XFS_I(dir), &teardown);
+		xfs_rmdir(XFS_I(dir), &teardown, XFS_I(inode));
 	else
-		xfs_remove(XFS_I(dir), &teardown);
+		xfs_remove(XFS_I(dir), &teardown, XFS_I(inode));
 	iput(inode);
 }
 
@@ -273,6 +281,7 @@ xfs_vn_mknod(
 	struct inode	*inode;
 	struct xfs_inode *ip = NULL;
 	xfs_acl_t	*default_acl = NULL;
+	struct xfs_name	name;
 	attrexists_t	test_default_acl = _ACL_DEFAULT_EXISTS;
 	int		error;
 
@@ -293,6 +302,8 @@ xfs_vn_mknod(
 		}
 	}
 
+	xfs_dentry_to_name(&name, dentry);
+
 	if (IS_POSIXACL(dir) && !default_acl)
 		mode &= ~current->fs->umask;
 
@@ -303,10 +314,10 @@ xfs_vn_mknod(
 	case S_IFSOCK:
 		rdev = sysv_encode_dev(rdev);
 	case S_IFREG:
-		error = xfs_create(XFS_I(dir), dentry, mode, rdev, &ip, NULL);
+		error = xfs_create(XFS_I(dir), &name, mode, rdev, &ip, NULL);
 		break;
 	case S_IFDIR:
-		error = xfs_mkdir(XFS_I(dir), dentry, mode, &ip, NULL);
+		error = xfs_mkdir(XFS_I(dir), &name, mode, &ip, NULL);
 		break;
 	default:
 		error = EINVAL;
@@ -371,12 +382,14 @@ xfs_vn_lookup(
 	struct nameidata *nd)
 {
 	struct xfs_inode *cip;
+	struct xfs_name	name;
 	int		error;
 
 	if (dentry->d_name.len >= MAXNAMELEN)
 		return ERR_PTR(-ENAMETOOLONG);
 
-	error = xfs_lookup(XFS_I(dir), dentry, &cip);
+	xfs_dentry_to_name(&name, dentry);
+	error = xfs_lookup(XFS_I(dir), &name, &cip);
 	if (unlikely(error)) {
 		if (unlikely(error != ENOENT))
 			return ERR_PTR(-error);
@@ -394,12 +407,14 @@ xfs_vn_link(
 	struct dentry	*dentry)
 {
 	struct inode	*inode;	/* inode of guy being linked to */
+	struct xfs_name	name;
 	int		error;
 
 	inode = old_dentry->d_inode;
+	xfs_dentry_to_name(&name, dentry);
 
 	igrab(inode);
-	error = xfs_link(XFS_I(dir), XFS_I(inode), dentry);
+	error = xfs_link(XFS_I(dir), XFS_I(inode), &name);
 	if (unlikely(error)) {
 		iput(inode);
 		return -error;
@@ -417,11 +432,13 @@ xfs_vn_unlink(
 	struct dentry	*dentry)
 {
 	struct inode	*inode;
+	struct xfs_name	name;
 	int		error;
 
 	inode = dentry->d_inode;
+	xfs_dentry_to_name(&name, dentry);
 
-	error = xfs_remove(XFS_I(dir), dentry);
+	error = xfs_remove(XFS_I(dir), &name, XFS_I(inode));
 	if (likely(!error)) {
 		xfs_validate_fields(dir);	/* size needs update */
 		xfs_validate_fields(inode);
@@ -437,14 +454,15 @@ xfs_vn_symlink(
 {
 	struct inode	*inode;
 	struct xfs_inode *cip = NULL;
+	struct xfs_name	name;
 	int		error;
 	mode_t		mode;
 
 	mode = S_IFLNK |
 		(irix_symlink_mode ? 0777 & ~current->fs->umask : S_IRWXUGO);
+	xfs_dentry_to_name(&name, dentry);
 
-	error = xfs_symlink(XFS_I(dir), dentry, (char *)symname, mode,
-			    &cip, NULL);
+	error = xfs_symlink(XFS_I(dir), &name, symname, mode, &cip, NULL);
 	if (unlikely(error))
 		goto out;
 
@@ -471,9 +489,12 @@ xfs_vn_rmdir(
 	struct dentry	*dentry)
 {
 	struct inode	*inode = dentry->d_inode;
+	struct xfs_name	name;
 	int		error;
 
-	error = xfs_rmdir(XFS_I(dir), dentry);
+	xfs_dentry_to_name(&name, dentry);
+
+	error = xfs_rmdir(XFS_I(dir), &name, XFS_I(inode));
 	if (likely(!error)) {
 		xfs_validate_fields(inode);
 		xfs_validate_fields(dir);
@@ -489,9 +510,15 @@ xfs_vn_rename(
 	struct dentry	*ndentry)
 {
 	struct inode	*new_inode = ndentry->d_inode;
+	struct xfs_name	oname;
+	struct xfs_name	nname;
 	int		error;
 
-	error = xfs_rename(XFS_I(odir), odentry, XFS_I(ndir), ndentry);
+	xfs_dentry_to_name(&oname, odentry);
+	xfs_dentry_to_name(&nname, ndentry);
+
+	error = xfs_rename(XFS_I(odir), &oname, XFS_I(odentry->d_inode),
+							XFS_I(ndir), &nname);
 	if (likely(!error)) {
 		if (new_inode)
 			xfs_validate_fields(new_inode);

fs/xfs/linux-2.6/xfs_vnode.h

@@ -23,8 +23,6 @@ struct bhv_vattr;
 struct xfs_iomap;
 struct attrlist_cursor_kern;
 
-typedef struct dentry	bhv_vname_t;
-typedef __u64		bhv_vnumber_t;
 typedef struct inode	bhv_vnode_t;
 
 #define VN_ISLNK(vp)	S_ISLNK((vp)->i_mode)
@@ -210,13 +208,6 @@ static inline bhv_vnode_t *vn_grab(bhv_vnode_t *vp)
 	return inode ? vn_from_inode(inode) : NULL;
 }
 
-/*
- * Vname handling macros.
- */
-#define VNAME(dentry)		((char *) (dentry)->d_name.name)
-#define VNAMELEN(dentry)	((dentry)->d_name.len)
-#define VNAME_TO_INODE(dentry)	(XFS_I((dentry)->d_inode))
-
 /*
  * Dealing with bad inodes
  */

fs/xfs/xfs_dir2.c

@@ -44,6 +44,7 @@
 #include "xfs_error.h"
 #include "xfs_vnodeops.h"
 
+struct xfs_name xfs_name_dotdot = {"..", 2};
 
 void
 xfs_dir_mount(
@@ -146,8 +147,7 @@ int
 xfs_dir_createname(
 	xfs_trans_t		*tp,
 	xfs_inode_t		*dp,
-	char			*name,
-	int			namelen,
+	struct xfs_name		*name,
 	xfs_ino_t		inum,		/* new entry inode number */
 	xfs_fsblock_t		*first,		/* bmap's firstblock */
 	xfs_bmap_free_t		*flist,		/* bmap's freeblock list */
@@ -162,9 +162,9 @@ xfs_dir_createname(
 		return rval;
 	XFS_STATS_INC(xs_dir_create);
 
-	args.name = name;
-	args.namelen = namelen;
-	args.hashval = xfs_da_hashname(name, namelen);
+	args.name = name->name;
+	args.namelen = name->len;
+	args.hashval = xfs_da_hashname(name->name, name->len);
 	args.inumber = inum;
 	args.dp = dp;
 	args.firstblock = first;
@@ -197,8 +197,7 @@ int
 xfs_dir_lookup(
 	xfs_trans_t	*tp,
 	xfs_inode_t	*dp,
-	char		*name,
-	int		namelen,
+	struct xfs_name	*name,
 	xfs_ino_t	*inum)		/* out: inode number */
 {
 	xfs_da_args_t	args;
@@ -207,18 +206,14 @@ xfs_dir_lookup(
 
 	ASSERT((dp->i_d.di_mode & S_IFMT) == S_IFDIR);
 	XFS_STATS_INC(xs_dir_lookup);
+	memset(&args, 0, sizeof(xfs_da_args_t));
 
-	args.name = name;
-	args.namelen = namelen;
-	args.hashval = xfs_da_hashname(name, namelen);
-	args.inumber = 0;
+	args.name = name->name;
+	args.namelen = name->len;
+	args.hashval = xfs_da_hashname(name->name, name->len);
 	args.dp = dp;
-	args.firstblock = NULL;
-	args.flist = NULL;
-	args.total = 0;
 	args.whichfork = XFS_DATA_FORK;
 	args.trans = tp;
-	args.justcheck = args.addname = 0;
 	args.oknoent = 1;
 
 	if (dp->i_d.di_format == XFS_DINODE_FMT_LOCAL)
@@ -247,8 +242,7 @@ int
 xfs_dir_removename(
 	xfs_trans_t	*tp,
 	xfs_inode_t	*dp,
-	char		*name,
-	int		namelen,
+	struct xfs_name	*name,
 	xfs_ino_t	ino,
 	xfs_fsblock_t	*first,		/* bmap's firstblock */
 	xfs_bmap_free_t	*flist,		/* bmap's freeblock list */
@@ -261,9 +255,9 @@ xfs_dir_removename(
 	ASSERT((dp->i_d.di_mode & S_IFMT) == S_IFDIR);
 	XFS_STATS_INC(xs_dir_remove);
 
-	args.name = name;
-	args.namelen = namelen;
-	args.hashval = xfs_da_hashname(name, namelen);
+	args.name = name->name;
+	args.namelen = name->len;
+	args.hashval = xfs_da_hashname(name->name, name->len);
 	args.inumber = ino;
 	args.dp = dp;
 	args.firstblock = first;
@@ -329,8 +323,7 @@ int
 xfs_dir_replace(
 	xfs_trans_t	*tp,
 	xfs_inode_t	*dp,
-	char		*name,		/* name of entry to replace */
-	int		namelen,
+	struct xfs_name	*name,		/* name of entry to replace */
 	xfs_ino_t	inum,		/* new inode number */
 	xfs_fsblock_t	*first,		/* bmap's firstblock */
 	xfs_bmap_free_t	*flist,		/* bmap's freeblock list */
@@ -345,9 +338,9 @@ xfs_dir_replace(
 	if ((rval = xfs_dir_ino_validate(tp->t_mountp, inum)))
 		return rval;
 
-	args.name = name;
-	args.namelen = namelen;
-	args.hashval = xfs_da_hashname(name, namelen);
+	args.name = name->name;
+	args.namelen = name->len;
+	args.hashval = xfs_da_hashname(name->name, name->len);
 	args.inumber = inum;
 	args.dp = dp;
 	args.firstblock = first;
@@ -374,28 +367,29 @@ xfs_dir_replace(
 
 /*
  * See if this entry can be added to the directory without allocating space.
+ * First checks that the caller couldn't reserve enough space (resblks = 0).
  */
 int
 xfs_dir_canenter(
 	xfs_trans_t	*tp,
 	xfs_inode_t	*dp,
-	char		*name,		/* name of entry to add */
-	int		namelen)
+	struct xfs_name	*name,		/* name of entry to add */
+	uint		resblks)
 {
 	xfs_da_args_t	args;
 	int		rval;
 	int		v;		/* type-checking value */
 
+	if (resblks)
+		return 0;
+
 	ASSERT((dp->i_d.di_mode & S_IFMT) == S_IFDIR);
+	memset(&args, 0, sizeof(xfs_da_args_t));
 
-	args.name = name;
-	args.namelen = namelen;
-	args.hashval = xfs_da_hashname(name, namelen);
-	args.inumber = 0;
+	args.name = name->name;
+	args.namelen = name->len;
+	args.hashval = xfs_da_hashname(name->name, name->len);
 	args.dp = dp;
-	args.firstblock = NULL;
-	args.flist = NULL;
-	args.total = 0;
 	args.whichfork = XFS_DATA_FORK;
 	args.trans = tp;
 	args.justcheck = args.addname = args.oknoent = 1;

fs/xfs/xfs_dir2.h

@@ -59,6 +59,8 @@ typedef	__uint32_t	xfs_dir2_db_t;
  */
 typedef	xfs_off_t	xfs_dir2_off_t;
 
+extern struct xfs_name	xfs_name_dotdot;
+
 /*
  * Generic directory interface routines
  */
@@ -68,21 +70,21 @@ extern int xfs_dir_isempty(struct xfs_inode *dp);
 extern int xfs_dir_init(struct xfs_trans *tp, struct xfs_inode *dp,
 				struct xfs_inode *pdp);
 extern int xfs_dir_createname(struct xfs_trans *tp, struct xfs_inode *dp,
-				char *name, int namelen, xfs_ino_t inum,
+				struct xfs_name *name, xfs_ino_t inum,
 				xfs_fsblock_t *first,
 				struct xfs_bmap_free *flist, xfs_extlen_t tot);
 extern int xfs_dir_lookup(struct xfs_trans *tp, struct xfs_inode *dp,
-				char *name, int namelen, xfs_ino_t *inum);
+				struct xfs_name *name, xfs_ino_t *inum);
 extern int xfs_dir_removename(struct xfs_trans *tp, struct xfs_inode *dp,
-				char *name, int namelen, xfs_ino_t ino,
+				struct xfs_name *name, xfs_ino_t ino,
 				xfs_fsblock_t *first,
 				struct xfs_bmap_free *flist, xfs_extlen_t tot);
 extern int xfs_dir_replace(struct xfs_trans *tp, struct xfs_inode *dp,
-				char *name, int namelen, xfs_ino_t inum,
+				struct xfs_name *name, xfs_ino_t inum,
 				xfs_fsblock_t *first,
 				struct xfs_bmap_free *flist, xfs_extlen_t tot);
 extern int xfs_dir_canenter(struct xfs_trans *tp, struct xfs_inode *dp,
-				char *name, int namelen);
+				struct xfs_name *name, uint resblks);
 extern int xfs_dir_ino_validate(struct xfs_mount *mp, xfs_ino_t ino);
 
 /*

fs/xfs/xfs_mount.h

@@ -73,7 +73,7 @@ typedef int	(*xfs_send_destroy_t)(struct xfs_inode *, dm_right_t);
 typedef int	(*xfs_send_namesp_t)(dm_eventtype_t, struct xfs_mount *,
 			struct xfs_inode *, dm_right_t,
 			struct xfs_inode *, dm_right_t,
-			char *, char *, mode_t, int, int);
+			const char *, const char *, mode_t, int, int);
 typedef int	(*xfs_send_mount_t)(struct xfs_mount *, dm_right_t,
 			char *, char *);
 typedef void	(*xfs_send_unmount_t)(struct xfs_mount *, struct xfs_inode *,
@@ -401,7 +401,7 @@ typedef struct xfs_mount {
 
 /*
  * Allow large block sizes to be reported to userspace programs if the
- * "largeio" mount option is used. 
+ * "largeio" mount option is used.
  *
  * If compatibility mode is specified, simply return the basic unit of caching
  * so that we don't get inefficient read/modify/write I/O from user apps.

fs/xfs/xfs_rename.c

@@ -83,26 +83,23 @@ int xfs_rename_skip, xfs_rename_nskip;
  */
 STATIC int
 xfs_lock_for_rename(
-	xfs_inode_t	*dp1,	/* old (source) directory inode */
-	xfs_inode_t	*dp2,	/* new (target) directory inode */
-	bhv_vname_t	*vname1,/* old entry name */
-	bhv_vname_t	*vname2,/* new entry name */
-	xfs_inode_t	**ipp1,	/* inode of old entry */
-	xfs_inode_t	**ipp2,	/* inode of new entry, if it
+	xfs_inode_t	*dp1,	/* in: old (source) directory inode */
+	xfs_inode_t	*dp2,	/* in: new (target) directory inode */
+	xfs_inode_t	*ip1,	/* in: inode of old entry */
+	struct xfs_name	*name2,	/* in: new entry name */
+	xfs_inode_t	**ipp2,	/* out: inode of new entry, if it
 				   already exists, NULL otherwise. */
-	xfs_inode_t	**i_tab,/* array of inode returned, sorted */
-	int		*num_inodes)  /* number of inodes in array */
+	xfs_inode_t	**i_tab,/* out: array of inode returned, sorted */
+	int		*num_inodes)  /* out: number of inodes in array */
 {
-	xfs_inode_t		*ip1 = VNAME_TO_INODE(vname1);
-	xfs_inode_t		*ip2, *temp;
+	xfs_inode_t		*ip2 = NULL;
+	xfs_inode_t		*temp;
 	xfs_ino_t		inum1, inum2;
 	int			error;
 	int			i, j;
 	uint			lock_mode;
 	int			diff_dirs = (dp1 != dp2);
 
-	ip2 = NULL;
-
 	/*
 	 * First, find out the current inums of the entries so that we
 	 * can determine the initial locking order.  We'll have to
@@ -115,17 +112,15 @@ xfs_lock_for_rename(
 
 	inum1 = ip1->i_ino;
 
-
 	/*
 	 * Unlock dp1 and lock dp2 if they are different.
 	 */
-
 	if (diff_dirs) {
 		xfs_iunlock_map_shared(dp1, lock_mode);
 		lock_mode = xfs_ilock_map_shared(dp2);
 	}
 
-	error = xfs_dir_lookup_int(dp2, lock_mode, vname2, &inum2, &ip2);
+	error = xfs_dir_lookup_int(dp2, lock_mode, name2, &inum2, &ip2);
 	if (error == ENOENT) {		/* target does not need to exist. */
 		inum2 = 0;
 	} else if (error) {
@@ -157,6 +152,7 @@ xfs_lock_for_rename(
 		*num_inodes = 4;
 		i_tab[3] = ip2;
 	}
+	*ipp2 = i_tab[3];
 
 	/*
 	 * Sort the elements via bubble sort.  (Remember, there are at
@@ -194,21 +190,6 @@ xfs_lock_for_rename(
 		xfs_lock_inodes(i_tab, *num_inodes, 0, XFS_ILOCK_SHARED);
 	}
 
-	/*
-	 * Set the return value. Null out any unused entries in i_tab.
-	 */
-	*ipp1 = *ipp2 = NULL;
-	for (i=0; i < *num_inodes; i++) {
-		if (i_tab[i]->i_ino == inum1) {
-			*ipp1 = i_tab[i];
-		}
-		if (i_tab[i]->i_ino == inum2) {
-			*ipp2 = i_tab[i];
-		}
-	}
-	for (;i < 4; i++) {
-		i_tab[i] = NULL;
-	}
 	return 0;
 }
 
@@ -218,12 +199,13 @@ xfs_lock_for_rename(
 int
 xfs_rename(
 	xfs_inode_t	*src_dp,
-	bhv_vname_t	*src_vname,
+	struct xfs_name	*src_name,
+	xfs_inode_t	*src_ip,
 	xfs_inode_t	*target_dp,
-	bhv_vname_t	*target_vname)
+	struct xfs_name	*target_name)
 {
 	xfs_trans_t	*tp;
-	xfs_inode_t	*src_ip, *target_ip;
+	xfs_inode_t	*target_ip;
 	xfs_mount_t	*mp = src_dp->i_mount;
 	int		new_parent;		/* moving to a new dir */
 	int		src_is_directory;	/* src_name is a directory */
@@ -237,10 +219,6 @@ xfs_rename(
 	int		spaceres;
 	int		target_link_zero = 0;
 	int		num_inodes;
-	char		*src_name = VNAME(src_vname);
-	char		*target_name = VNAME(target_vname);
-	int		src_namelen = VNAMELEN(src_vname);
-	int		target_namelen = VNAMELEN(target_vname);
 
 	xfs_itrace_entry(src_dp);
 	xfs_itrace_entry(target_dp);
@@ -250,7 +228,7 @@ xfs_rename(
 		error = XFS_SEND_NAMESP(mp, DM_EVENT_RENAME,
 					src_dp, DM_RIGHT_NULL,
 					target_dp, DM_RIGHT_NULL,
-					src_name, target_name,
+					src_name->name, target_name->name,
 					0, 0, 0);
 		if (error) {
 			return error;
@@ -267,10 +245,8 @@ xfs_rename(
 	 * does not exist in the source directory.
 	 */
 	tp = NULL;
-	error = xfs_lock_for_rename(src_dp, target_dp, src_vname,
-			target_vname, &src_ip, &target_ip, inodes,
-			&num_inodes);
-
+	error = xfs_lock_for_rename(src_dp, target_dp, src_ip, target_name,
+					&target_ip, inodes, &num_inodes);
 	if (error) {
 		/*
 		 * We have nothing locked, no inode references, and
@@ -316,7 +292,7 @@ xfs_rename(
 	XFS_BMAP_INIT(&free_list, &first_block);
 	tp = xfs_trans_alloc(mp, XFS_TRANS_RENAME);
 	cancel_flags = XFS_TRANS_RELEASE_LOG_RES;
-	spaceres = XFS_RENAME_SPACE_RES(mp, target_namelen);
+	spaceres = XFS_RENAME_SPACE_RES(mp, target_name->len);
 	error = xfs_trans_reserve(tp, spaceres, XFS_RENAME_LOG_RES(mp), 0,
 			XFS_TRANS_PERM_LOG_RES, XFS_RENAME_LOG_COUNT);
 	if (error == ENOSPC) {
@@ -374,9 +350,8 @@ xfs_rename(
 		 * If there's no space reservation, check the entry will
 		 * fit before actually inserting it.
 		 */
-		if (spaceres == 0 &&
-		    (error = xfs_dir_canenter(tp, target_dp, target_name,
-						target_namelen)))
+		error = xfs_dir_canenter(tp, target_dp, target_name, spaceres);
+		if (error)
 			goto error_return;
 		/*
 		 * If target does not exist and the rename crosses
@@ -384,8 +359,8 @@ xfs_rename(
 		 * to account for the ".." reference from the new entry.
 		 */
 		error = xfs_dir_createname(tp, target_dp, target_name,
-					   target_namelen, src_ip->i_ino,
-					   &first_block, &free_list, spaceres);
+						src_ip->i_ino, &first_block,
+						&free_list, spaceres);
 		if (error == ENOSPC)
 			goto error_return;
 		if (error)
@@ -424,7 +399,7 @@ xfs_rename(
 		 * name at the destination directory, remove it first.
 		 */
 		error = xfs_dir_replace(tp, target_dp, target_name,
-					target_namelen, src_ip->i_ino,
+					src_ip->i_ino,
 					&first_block, &free_list, spaceres);
 		if (error)
 			goto abort_return;
@@ -461,7 +436,8 @@ xfs_rename(
 		 * Rewrite the ".." entry to point to the new
 		 * directory.
 		 */
-		error = xfs_dir_replace(tp, src_ip, "..", 2, target_dp->i_ino,
+		error = xfs_dir_replace(tp, src_ip, &xfs_name_dotdot,
+					target_dp->i_ino,
 					&first_block, &free_list, spaceres);
 		ASSERT(error != EEXIST);
 		if (error)
@@ -497,8 +473,8 @@ xfs_rename(
 			goto abort_return;
 	}
 
-	error = xfs_dir_removename(tp, src_dp, src_name, src_namelen,
-			src_ip->i_ino, &first_block, &free_list, spaceres);
+	error = xfs_dir_removename(tp, src_dp, src_name, src_ip->i_ino,
+					&first_block, &free_list, spaceres);
 	if (error)
 		goto abort_return;
 	xfs_ichgtime(src_dp, XFS_ICHGTIME_MOD | XFS_ICHGTIME_CHG);
@@ -583,7 +559,7 @@ std_return:
 		(void) XFS_SEND_NAMESP (mp, DM_EVENT_POSTRENAME,
 					src_dp, DM_RIGHT_NULL,
 					target_dp, DM_RIGHT_NULL,
-					src_name, target_name,
+					src_name->name, target_name->name,
 					0, error, 0);
 	}
 	return error;

fs/xfs/xfs_types.h

@@ -160,4 +160,9 @@ typedef enum {
 	XFS_BTNUM_MAX
 } xfs_btnum_t;
 
+struct xfs_name {
+	const char	*name;
+	int		len;
+};
+
 #endif	/* __XFS_TYPES_H__ */

fs/xfs/xfs_utils.c

@@ -45,7 +45,7 @@ int
 xfs_dir_lookup_int(
 	xfs_inode_t	*dp,
 	uint		lock_mode,
-	bhv_vname_t	*dentry,
+	struct xfs_name	*name,
 	xfs_ino_t	*inum,
 	xfs_inode_t	**ipp)
 {
@@ -53,7 +53,7 @@ xfs_dir_lookup_int(
 
 	xfs_itrace_entry(dp);
 
-	error = xfs_dir_lookup(NULL, dp, VNAME(dentry), VNAMELEN(dentry), inum);
+	error = xfs_dir_lookup(NULL, dp, name, inum);
 	if (!error) {
 		/*
 		 * Unlock the directory. We do this because we can't

fs/xfs/xfs_utils.h

@@ -21,8 +21,8 @@
 #define IRELE(ip)	VN_RELE(XFS_ITOV(ip))
 #define IHOLD(ip)	VN_HOLD(XFS_ITOV(ip))
 
-extern int xfs_dir_lookup_int(xfs_inode_t *, uint, bhv_vname_t *, xfs_ino_t *,
-				xfs_inode_t **);
+extern int xfs_dir_lookup_int(xfs_inode_t *, uint, struct xfs_name *,
+				xfs_ino_t *, xfs_inode_t **);
 extern int xfs_truncate_file(xfs_mount_t *, xfs_inode_t *);
 extern int xfs_dir_ialloc(xfs_trans_t **, xfs_inode_t *, mode_t, xfs_nlink_t,
 				xfs_dev_t, cred_t *, prid_t, int,

fs/xfs/xfs_vnodeops.c

@@ -1764,7 +1764,7 @@ xfs_inactive(
 int
 xfs_lookup(
 	xfs_inode_t		*dp,
-	bhv_vname_t		*dentry,
+	struct xfs_name		*name,
 	xfs_inode_t		**ipp)
 {
 	xfs_inode_t		*ip;
@@ -1778,7 +1778,7 @@ xfs_lookup(
 		return XFS_ERROR(EIO);
 
 	lock_mode = xfs_ilock_map_shared(dp);
-	error = xfs_dir_lookup_int(dp, lock_mode, dentry, &e_inum, &ip);
+	error = xfs_dir_lookup_int(dp, lock_mode, name, &e_inum, &ip);
 	if (!error) {
 		*ipp = ip;
 		xfs_itrace_ref(ip);
@@ -1790,17 +1790,16 @@ xfs_lookup(
 int
 xfs_create(
 	xfs_inode_t		*dp,
-	bhv_vname_t		*dentry,
+	struct xfs_name		*name,
 	mode_t			mode,
 	xfs_dev_t		rdev,
 	xfs_inode_t		**ipp,
 	cred_t			*credp)
 {
-	char			*name = VNAME(dentry);
-	xfs_mount_t	        *mp = dp->i_mount;
+	xfs_mount_t		*mp = dp->i_mount;
 	xfs_inode_t		*ip;
 	xfs_trans_t		*tp;
-	int                     error;
+	int			error;
 	xfs_bmap_free_t		free_list;
 	xfs_fsblock_t		first_block;
 	boolean_t		unlock_dp_on_error = B_FALSE;
@@ -1810,17 +1809,14 @@ xfs_create(
 	xfs_prid_t		prid;
 	struct xfs_dquot	*udqp, *gdqp;
 	uint			resblks;
-	int			namelen;
 
 	ASSERT(!*ipp);
 	xfs_itrace_entry(dp);
 
-	namelen = VNAMELEN(dentry);
-
 	if (DM_EVENT_ENABLED(dp, DM_EVENT_CREATE)) {
 		error = XFS_SEND_NAMESP(mp, DM_EVENT_CREATE,
 				dp, DM_RIGHT_NULL, NULL,
-				DM_RIGHT_NULL, name, NULL,
+				DM_RIGHT_NULL, name->name, NULL,
 				mode, 0, 0);
 
 		if (error)
@@ -1852,7 +1848,7 @@ xfs_create(
 
 	tp = xfs_trans_alloc(mp, XFS_TRANS_CREATE);
 	cancel_flags = XFS_TRANS_RELEASE_LOG_RES;
-	resblks = XFS_CREATE_SPACE_RES(mp, namelen);
+	resblks = XFS_CREATE_SPACE_RES(mp, name->len);
 	/*
 	 * Initially assume that the file does not exist and
 	 * reserve the resources for that case.  If that is not
@@ -1885,7 +1881,8 @@ xfs_create(
 	if (error)
 		goto error_return;
 
-	if (resblks == 0 && (error = xfs_dir_canenter(tp, dp, name, namelen)))
+	error = xfs_dir_canenter(tp, dp, name, resblks);
+	if (error)
 		goto error_return;
 	error = xfs_dir_ialloc(&tp, dp, mode, 1,
 			rdev, credp, prid, resblks > 0,
@@ -1915,7 +1912,7 @@ xfs_create(
 	xfs_trans_ijoin(tp, dp, XFS_ILOCK_EXCL);
 	unlock_dp_on_error = B_FALSE;
 
-	error = xfs_dir_createname(tp, dp, name, namelen, ip->i_ino,
+	error = xfs_dir_createname(tp, dp, name, ip->i_ino,
 					&first_block, &free_list, resblks ?
 					resblks - XFS_IALLOC_SPACE_RES(mp) : 0);
 	if (error) {
@@ -1976,7 +1973,7 @@ std_return:
 		(void) XFS_SEND_NAMESP(mp, DM_EVENT_POSTCREATE,
 			dp, DM_RIGHT_NULL,
 			*ipp ? ip : NULL,
-			DM_RIGHT_NULL, name, NULL,
+			DM_RIGHT_NULL, name->name, NULL,
 			mode, error, 0);
 	}
 	return error;
@@ -2268,12 +2265,10 @@ int remove_which_error_return = 0;
 int
 xfs_remove(
 	xfs_inode_t             *dp,
-	bhv_vname_t		*dentry)
+	struct xfs_name		*name,
+	xfs_inode_t		*ip)
 {
-	char			*name = VNAME(dentry);
 	xfs_mount_t		*mp = dp->i_mount;
-	xfs_inode_t             *ip = VNAME_TO_INODE(dentry);
-	int			namelen = VNAMELEN(dentry);
 	xfs_trans_t             *tp = NULL;
 	int                     error = 0;
 	xfs_bmap_free_t         free_list;
@@ -2289,9 +2284,9 @@ xfs_remove(
 		return XFS_ERROR(EIO);
 
 	if (DM_EVENT_ENABLED(dp, DM_EVENT_REMOVE)) {
-		error = XFS_SEND_NAMESP(mp, DM_EVENT_REMOVE, dp,
-					DM_RIGHT_NULL, NULL, DM_RIGHT_NULL,
-					name, NULL, ip->i_d.di_mode, 0, 0);
+		error = XFS_SEND_NAMESP(mp, DM_EVENT_REMOVE, dp, DM_RIGHT_NULL,
+					NULL, DM_RIGHT_NULL, name->name, NULL,
+					ip->i_d.di_mode, 0, 0);
 		if (error)
 			return error;
 	}
@@ -2376,7 +2371,7 @@ xfs_remove(
 	 * Entry must exist since we did a lookup in xfs_lock_dir_and_entry.
 	 */
 	XFS_BMAP_INIT(&free_list, &first_block);
-	error = xfs_dir_removename(tp, dp, name, namelen, ip->i_ino,
+	error = xfs_dir_removename(tp, dp, name, ip->i_ino,
 					&first_block, &free_list, 0);
 	if (error) {
 		ASSERT(error != ENOENT);
@@ -2444,7 +2439,7 @@ xfs_remove(
 		(void) XFS_SEND_NAMESP(mp, DM_EVENT_POSTREMOVE,
 				dp, DM_RIGHT_NULL,
 				NULL, DM_RIGHT_NULL,
-				name, NULL, ip->i_d.di_mode, error, 0);
+				name->name, NULL, ip->i_d.di_mode, error, 0);
 	}
 	return error;
 
@@ -2474,7 +2469,7 @@ int
 xfs_link(
 	xfs_inode_t		*tdp,
 	xfs_inode_t		*sip,
-	bhv_vname_t		*dentry)
+	struct xfs_name		*target_name)
 {
 	xfs_mount_t		*mp = tdp->i_mount;
 	xfs_trans_t		*tp;
@@ -2485,13 +2480,10 @@ xfs_link(
 	int			cancel_flags;
 	int			committed;
 	int			resblks;
-	char			*target_name = VNAME(dentry);
-	int			target_namelen;
 
 	xfs_itrace_entry(tdp);
 	xfs_itrace_entry(sip);
 
-	target_namelen = VNAMELEN(dentry);
 	ASSERT(!S_ISDIR(sip->i_d.di_mode));
 
 	if (XFS_FORCED_SHUTDOWN(mp))
@@ -2501,7 +2493,7 @@ xfs_link(
 		error = XFS_SEND_NAMESP(mp, DM_EVENT_LINK,
 					tdp, DM_RIGHT_NULL,
 					sip, DM_RIGHT_NULL,
-					target_name, NULL, 0, 0, 0);
+					target_name->name, NULL, 0, 0, 0);
 		if (error)
 			return error;
 	}
@@ -2516,7 +2508,7 @@ xfs_link(
 
 	tp = xfs_trans_alloc(mp, XFS_TRANS_LINK);
 	cancel_flags = XFS_TRANS_RELEASE_LOG_RES;
-	resblks = XFS_LINK_SPACE_RES(mp, target_namelen);
+	resblks = XFS_LINK_SPACE_RES(mp, target_name->len);
 	error = xfs_trans_reserve(tp, resblks, XFS_LINK_LOG_RES(mp), 0,
 			XFS_TRANS_PERM_LOG_RES, XFS_LINK_LOG_COUNT);
 	if (error == ENOSPC) {
@@ -2568,15 +2560,14 @@ xfs_link(
 		goto error_return;
 	}
 
-	if (resblks == 0 &&
-	    (error = xfs_dir_canenter(tp, tdp, target_name, target_namelen)))
+	error = xfs_dir_canenter(tp, tdp, target_name, resblks);
+	if (error)
 		goto error_return;
 
 	XFS_BMAP_INIT(&free_list, &first_block);
 
-	error = xfs_dir_createname(tp, tdp, target_name, target_namelen,
-				   sip->i_ino, &first_block, &free_list,
-				   resblks);
+	error = xfs_dir_createname(tp, tdp, target_name, sip->i_ino,
+					&first_block, &free_list, resblks);
 	if (error)
 		goto abort_return;
 	xfs_ichgtime(tdp, XFS_ICHGTIME_MOD | XFS_ICHGTIME_CHG);
@@ -2612,7 +2603,7 @@ std_return:
 		(void) XFS_SEND_NAMESP(mp, DM_EVENT_POSTLINK,
 				tdp, DM_RIGHT_NULL,
 				sip, DM_RIGHT_NULL,
-				target_name, NULL, 0, error, 0);
+				target_name->name, NULL, 0, error, 0);
 	}
 	return error;
 
@@ -2629,13 +2620,11 @@ std_return:
 int
 xfs_mkdir(
 	xfs_inode_t             *dp,
-	bhv_vname_t		*dentry,
+	struct xfs_name		*dir_name,
 	mode_t			mode,
 	xfs_inode_t		**ipp,
 	cred_t			*credp)
 {
-	char			*dir_name = VNAME(dentry);
-	int			dir_namelen = VNAMELEN(dentry);
 	xfs_mount_t		*mp = dp->i_mount;
 	xfs_inode_t		*cdp;	/* inode of created dir */
 	xfs_trans_t		*tp;
@@ -2659,7 +2648,7 @@ xfs_mkdir(
 	if (DM_EVENT_ENABLED(dp, DM_EVENT_CREATE)) {
 		error = XFS_SEND_NAMESP(mp, DM_EVENT_CREATE,
 					dp, DM_RIGHT_NULL, NULL,
-					DM_RIGHT_NULL, dir_name, NULL,
+					DM_RIGHT_NULL, dir_name->name, NULL,
 					mode, 0, 0);
 		if (error)
 			return error;
@@ -2688,7 +2677,7 @@ xfs_mkdir(
 
 	tp = xfs_trans_alloc(mp, XFS_TRANS_MKDIR);
 	cancel_flags = XFS_TRANS_RELEASE_LOG_RES;
-	resblks = XFS_MKDIR_SPACE_RES(mp, dir_namelen);
+	resblks = XFS_MKDIR_SPACE_RES(mp, dir_name->len);
 	error = xfs_trans_reserve(tp, resblks, XFS_MKDIR_LOG_RES(mp), 0,
 				  XFS_TRANS_PERM_LOG_RES, XFS_MKDIR_LOG_COUNT);
 	if (error == ENOSPC) {
@@ -2720,8 +2709,8 @@ xfs_mkdir(
 	if (error)
 		goto error_return;
 
-	if (resblks == 0 &&
-	    (error = xfs_dir_canenter(tp, dp, dir_name, dir_namelen)))
+	error = xfs_dir_canenter(tp, dp, dir_name, resblks);
+	if (error)
 		goto error_return;
 	/*
 	 * create the directory inode.
@@ -2750,9 +2739,9 @@ xfs_mkdir(
 
 	XFS_BMAP_INIT(&free_list, &first_block);
 
-	error = xfs_dir_createname(tp, dp, dir_name, dir_namelen, cdp->i_ino,
-				   &first_block, &free_list, resblks ?
-				   resblks - XFS_IALLOC_SPACE_RES(mp) : 0);
+	error = xfs_dir_createname(tp, dp, dir_name, cdp->i_ino,
+					&first_block, &free_list, resblks ?
+					resblks - XFS_IALLOC_SPACE_RES(mp) : 0);
 	if (error) {
 		ASSERT(error != ENOSPC);
 		goto error1;
@@ -2817,7 +2806,7 @@ std_return:
 					dp, DM_RIGHT_NULL,
 					created ? cdp : NULL,
 					DM_RIGHT_NULL,
-					dir_name, NULL,
+					dir_name->name, NULL,
 					mode, error, 0);
 	}
 	return error;
@@ -2841,13 +2830,11 @@ std_return:
 int
 xfs_rmdir(
 	xfs_inode_t             *dp,
-	bhv_vname_t		*dentry)
+	struct xfs_name		*name,
+	xfs_inode_t		*cdp)
 {
 	bhv_vnode_t		*dir_vp = XFS_ITOV(dp);
-	char			*name = VNAME(dentry);
-	int			namelen = VNAMELEN(dentry);
 	xfs_mount_t		*mp = dp->i_mount;
-  	xfs_inode_t             *cdp = VNAME_TO_INODE(dentry);
 	xfs_trans_t             *tp;
 	int                     error;
 	xfs_bmap_free_t         free_list;
@@ -2865,8 +2852,8 @@ xfs_rmdir(
 	if (DM_EVENT_ENABLED(dp, DM_EVENT_REMOVE)) {
 		error = XFS_SEND_NAMESP(mp, DM_EVENT_REMOVE,
 					dp, DM_RIGHT_NULL,
-					NULL, DM_RIGHT_NULL,
-					name, NULL, cdp->i_d.di_mode, 0, 0);
+					NULL, DM_RIGHT_NULL, name->name,
+					NULL, cdp->i_d.di_mode, 0, 0);
 		if (error)
 			return XFS_ERROR(error);
 	}
@@ -2960,7 +2947,7 @@ xfs_rmdir(
 		goto error_return;
 	}
 
-	error = xfs_dir_removename(tp, dp, name, namelen, cdp->i_ino,
+	error = xfs_dir_removename(tp, dp, name, cdp->i_ino,
 					&first_block, &free_list, resblks);
 	if (error)
 		goto error1;
@@ -3040,7 +3027,7 @@ xfs_rmdir(
 		(void) XFS_SEND_NAMESP(mp, DM_EVENT_POSTREMOVE,
 					dp, DM_RIGHT_NULL,
 					NULL, DM_RIGHT_NULL,
-					name, NULL, cdp->i_d.di_mode,
+					name->name, NULL, cdp->i_d.di_mode,
 					error, 0);
 	}
 	return error;
@@ -3058,8 +3045,8 @@ xfs_rmdir(
 int
 xfs_symlink(
 	xfs_inode_t		*dp,
-	bhv_vname_t		*dentry,
-	char			*target_path,
+	struct xfs_name		*link_name,
+	const char		*target_path,
 	mode_t			mode,
 	xfs_inode_t		**ipp,
 	cred_t			*credp)
@@ -3079,15 +3066,13 @@ xfs_symlink(
 	int			nmaps;
 	xfs_bmbt_irec_t		mval[SYMLINK_MAPS];
 	xfs_daddr_t		d;
-	char			*cur_chunk;
+	const char		*cur_chunk;
 	int			byte_cnt;
 	int			n;
 	xfs_buf_t		*bp;
 	xfs_prid_t		prid;
 	struct xfs_dquot	*udqp, *gdqp;
 	uint			resblks;
-	char			*link_name = VNAME(dentry);
-	int			link_namelen;
 
 	*ipp = NULL;
 	error = 0;
@@ -3099,8 +3084,6 @@ xfs_symlink(
 	if (XFS_FORCED_SHUTDOWN(mp))
 		return XFS_ERROR(EIO);
 
-	link_namelen = VNAMELEN(dentry);
-
 	/*
 	 * Check component lengths of the target path name.
 	 */
@@ -3111,7 +3094,7 @@ xfs_symlink(
 	if (DM_EVENT_ENABLED(dp, DM_EVENT_SYMLINK)) {
 		error = XFS_SEND_NAMESP(mp, DM_EVENT_SYMLINK, dp,
 					DM_RIGHT_NULL, NULL, DM_RIGHT_NULL,
-					link_name, target_path, 0, 0, 0);
+					link_name->name, target_path, 0, 0, 0);
 		if (error)
 			return error;
 	}
@@ -3143,7 +3126,7 @@ xfs_symlink(
 		fs_blocks = 0;
 	else
 		fs_blocks = XFS_B_TO_FSB(mp, pathlen);
-	resblks = XFS_SYMLINK_SPACE_RES(mp, link_namelen, fs_blocks);
+	resblks = XFS_SYMLINK_SPACE_RES(mp, link_name->len, fs_blocks);
 	error = xfs_trans_reserve(tp, resblks, XFS_SYMLINK_LOG_RES(mp), 0,
 			XFS_TRANS_PERM_LOG_RES, XFS_SYMLINK_LOG_COUNT);
 	if (error == ENOSPC && fs_blocks == 0) {
@@ -3177,8 +3160,8 @@ xfs_symlink(
 	/*
 	 * Check for ability to enter directory entry, if no space reserved.
 	 */
-	if (resblks == 0 &&
-	    (error = xfs_dir_canenter(tp, dp, link_name, link_namelen)))
+	error = xfs_dir_canenter(tp, dp, link_name, resblks);
+	if (error)
 		goto error_return;
 	/*
 	 * Initialize the bmap freelist prior to calling either
@@ -3270,8 +3253,8 @@ xfs_symlink(
 	/*
 	 * Create the directory entry for the symlink.
 	 */
-	error = xfs_dir_createname(tp, dp, link_name, link_namelen, ip->i_ino,
-				   &first_block, &free_list, resblks);
+	error = xfs_dir_createname(tp, dp, link_name, ip->i_ino,
+					&first_block, &free_list, resblks);
 	if (error)
 		goto error1;
 	xfs_ichgtime(dp, XFS_ICHGTIME_MOD | XFS_ICHGTIME_CHG);
@@ -3315,8 +3298,8 @@ std_return:
 		(void) XFS_SEND_NAMESP(mp, DM_EVENT_POSTSYMLINK,
 					dp, DM_RIGHT_NULL,
 					error ? NULL : ip,
-					DM_RIGHT_NULL, link_name, target_path,
-					0, error, 0);
+					DM_RIGHT_NULL, link_name->name,
+					target_path, 0, error, 0);
 	}
 
 	if (!error)

fs/xfs/xfs_vnodeops.h

@@ -23,20 +23,22 @@ int xfs_fsync(struct xfs_inode *ip, int flag, xfs_off_t start,
 		xfs_off_t stop);
 int xfs_release(struct xfs_inode *ip);
 int xfs_inactive(struct xfs_inode *ip);
-int xfs_lookup(struct xfs_inode *dp, bhv_vname_t *dentry,
+int xfs_lookup(struct xfs_inode *dp, struct xfs_name *name,
 		struct xfs_inode **ipp);
-int xfs_create(struct xfs_inode *dp, bhv_vname_t *dentry, mode_t mode,
+int xfs_create(struct xfs_inode *dp, struct xfs_name *name, mode_t mode,
 		xfs_dev_t rdev, struct xfs_inode **ipp, struct cred *credp);
-int xfs_remove(struct xfs_inode *dp, bhv_vname_t	*dentry);
+int xfs_remove(struct xfs_inode *dp, struct xfs_name *name,
+		struct xfs_inode *ip);
 int xfs_link(struct xfs_inode *tdp, struct xfs_inode *sip,
-		bhv_vname_t *dentry);
-int xfs_mkdir(struct xfs_inode *dp, bhv_vname_t *dentry,
+		struct xfs_name *target_name);
+int xfs_mkdir(struct xfs_inode *dp, struct xfs_name *dir_name,
 		mode_t mode, struct xfs_inode **ipp, struct cred *credp);
-int xfs_rmdir(struct xfs_inode *dp, bhv_vname_t *dentry);
+int xfs_rmdir(struct xfs_inode *dp, struct xfs_name *name,
+		struct xfs_inode *cdp);
 int xfs_readdir(struct xfs_inode	*dp, void *dirent, size_t bufsize,
 		       xfs_off_t *offset, filldir_t filldir);
-int xfs_symlink(struct xfs_inode *dp, bhv_vname_t *dentry,
-		char *target_path, mode_t mode, struct xfs_inode **ipp,
+int xfs_symlink(struct xfs_inode *dp, struct xfs_name *link_name,
+		const char *target_path, mode_t mode, struct xfs_inode **ipp,
 		struct cred *credp);
 int xfs_inode_flush(struct xfs_inode *ip, int flags);
 int xfs_set_dmattrs(struct xfs_inode *ip, u_int evmask, u_int16_t state);
@@ -44,8 +46,9 @@ int xfs_reclaim(struct xfs_inode *ip);
 int xfs_change_file_space(struct xfs_inode *ip, int cmd,
 		xfs_flock64_t *bf, xfs_off_t offset,
 		struct cred *credp, int	attr_flags);
-int xfs_rename(struct xfs_inode *src_dp, bhv_vname_t *src_vname,
-		struct xfs_inode *target_dp, bhv_vname_t *target_vname);
+int xfs_rename(struct xfs_inode *src_dp, struct xfs_name *src_name,
+		struct xfs_inode *src_ip, struct xfs_inode *target_dp,
+		struct xfs_name *target_name);
 int xfs_attr_get(struct xfs_inode *ip, const char *name, char *value,
 		int *valuelenp, int flags, cred_t *cred);
 int xfs_attr_set(struct xfs_inode *dp, const char *name, char *value,