[PATCH v8 13/28] xfs: Remove all strlen calls in all xfs_attr_* functions for attr names.

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Parent pointer attributes use a binary name, so strlen will not work.
Calling functions will need to pass in the name length

Signed-off-by: Allison Henderson <allison.henderson@xxxxxxxxxx>
Reviewed-by: Darrick J. Wong <darrick.wong@xxxxxxxxxx>
---
 fs/xfs/libxfs/xfs_attr.c | 16 ++++++++++------
 fs/xfs/libxfs/xfs_attr.h | 10 ++++++----
 fs/xfs/xfs_acl.c         | 12 +++++++-----
 fs/xfs/xfs_attr_item.c   |  2 +-
 fs/xfs/xfs_ioctl.c       | 13 ++++++++++---
 fs/xfs/xfs_iops.c        |  6 ++++--
 fs/xfs/xfs_trans_attr.c  |  2 +-
 fs/xfs/xfs_xattr.c       | 10 ++++++----
 8 files changed, 45 insertions(+), 26 deletions(-)

diff --git a/fs/xfs/libxfs/xfs_attr.c b/fs/xfs/libxfs/xfs_attr.c
index 79e7650..34f4ab0 100644
--- a/fs/xfs/libxfs/xfs_attr.c
+++ b/fs/xfs/libxfs/xfs_attr.c
@@ -70,6 +70,7 @@ xfs_attr_args_init(
 	struct xfs_da_args	*args,
 	struct xfs_inode	*dp,
 	const unsigned char	*name,
+	size_t			namelen,
 	int			flags)
 {
 
@@ -82,7 +83,7 @@ xfs_attr_args_init(
 	args->dp = dp;
 	args->flags = flags;
 	args->name = name;
-	args->namelen = strlen((const char *)name);
+	args->namelen = namelen;
 	if (args->namelen >= MAXNAMELEN)
 		return -EFAULT;		/* match IRIX behaviour */
 
@@ -128,6 +129,7 @@ int
 xfs_attr_get(
 	struct xfs_inode	*ip,
 	const unsigned char	*name,
+	size_t			namelen,
 	unsigned char		*value,
 	int			*valuelenp,
 	int			flags)
@@ -141,7 +143,7 @@ xfs_attr_get(
 	if (XFS_FORCED_SHUTDOWN(ip->i_mount))
 		return -EIO;
 
-	error = xfs_attr_args_init(&args, ip, name, flags);
+	error = xfs_attr_args_init(&args, ip, name, namelen, flags);
 	if (error)
 		return error;
 
@@ -370,6 +372,7 @@ int
 xfs_attr_set(
 	struct xfs_inode	*dp,
 	const unsigned char	*name,
+	size_t			namelen,
 	unsigned char		*value,
 	int			valuelen,
 	int			flags)
@@ -386,7 +389,7 @@ xfs_attr_set(
 	if (XFS_FORCED_SHUTDOWN(dp->i_mount))
 		return -EIO;
 
-	error = xfs_attr_args_init(&args, dp, name, flags);
+	error = xfs_attr_args_init(&args, dp, name, namelen, flags);
 	if (error)
 		return error;
 
@@ -438,7 +441,7 @@ xfs_attr_set(
 
 	xfs_trans_ijoin(args.trans, dp, 0);
 
-	error = xfs_attr_set_deferred(dp, args.trans, name, strlen(name),
+	error = xfs_attr_set_deferred(dp, args.trans, name, namelen,
 			value, valuelen, flags);
 	if (error)
 		goto out;
@@ -525,6 +528,7 @@ int
 xfs_attr_remove(
 	struct xfs_inode	*dp,
 	const unsigned char	*name,
+	size_t			namelen,
 	int			flags)
 {
 	struct xfs_mount	*mp = dp->i_mount;
@@ -536,7 +540,7 @@ xfs_attr_remove(
 	if (XFS_FORCED_SHUTDOWN(dp->i_mount))
 		return -EIO;
 
-	error = xfs_attr_args_init(&args, dp, name, flags);
+	error = xfs_attr_args_init(&args, dp, name, namelen, flags);
 	if (error)
 		return error;
 
@@ -575,7 +579,7 @@ xfs_attr_remove(
 
 
 	error = xfs_attr_remove_deferred(dp, args.trans,
-			name, strlen(name), flags);
+			name, namelen, flags);
 	if (error)
 		goto out;
 
diff --git a/fs/xfs/libxfs/xfs_attr.h b/fs/xfs/libxfs/xfs_attr.h
index 3a51c84..bee449d 100644
--- a/fs/xfs/libxfs/xfs_attr.h
+++ b/fs/xfs/libxfs/xfs_attr.h
@@ -174,18 +174,20 @@ int xfs_attr_list_int(struct xfs_attr_list_context *);
 int xfs_inode_hasattr(struct xfs_inode *ip);
 int xfs_attr_get_ilocked(struct xfs_inode *ip, struct xfs_da_args *args);
 int xfs_attr_get(struct xfs_inode *ip, const unsigned char *name,
-		 unsigned char *value, int *valuelenp, int flags);
+		size_t namelen, unsigned char *value, int *valuelenp,
+		int flags);
 int xfs_attr_set(struct xfs_inode *dp, const unsigned char *name,
-		 unsigned char *value, int valuelen, int flags);
+		 size_t namelen, unsigned char *value, int valuelen, int flags);
 int xfs_attr_set_args(struct xfs_da_args *args, struct xfs_buf **leaf_bp,
 		 xfs_attr_state_t *state);
-int xfs_attr_remove(struct xfs_inode *dp, const unsigned char *name, int flags);
+int xfs_attr_remove(struct xfs_inode *dp, const unsigned char *name,
+		size_t namelen, int flags);
 int xfs_has_attr(struct xfs_da_args *args);
 int xfs_attr_remove_args(struct xfs_da_args *args);
 int xfs_attr_list(struct xfs_inode *dp, char *buffer, int bufsize,
 		  int flags, struct attrlist_cursor_kern *cursor);
 int xfs_attr_args_init(struct xfs_da_args *args, struct xfs_inode *dp,
-		       const unsigned char *name, int flags);
+		       const unsigned char *name, size_t namelen, int flags);
 int xfs_attr_calc_size(struct xfs_da_args *args, int *local);
 int xfs_attr_set_deferred(struct xfs_inode *dp, struct xfs_trans *tp,
 			  void *name, unsigned int name_len, void *value,
diff --git a/fs/xfs/xfs_acl.c b/fs/xfs/xfs_acl.c
index 48166df..9b1b93e 100644
--- a/fs/xfs/xfs_acl.c
+++ b/fs/xfs/xfs_acl.c
@@ -143,8 +143,8 @@ xfs_get_acl(struct inode *inode, int type)
 	if (!xfs_acl)
 		return ERR_PTR(-ENOMEM);
 
-	error = xfs_attr_get(ip, ea_name, (unsigned char *)xfs_acl,
-							&len, ATTR_ROOT);
+	error = xfs_attr_get(ip, ea_name, strlen(ea_name),
+			     (unsigned char *)xfs_acl, &len, ATTR_ROOT);
 	if (error) {
 		/*
 		 * If the attribute doesn't exist make sure we have a negative
@@ -194,15 +194,17 @@ __xfs_set_acl(struct inode *inode, struct posix_acl *acl, int type)
 		len -= sizeof(struct xfs_acl_entry) *
 			 (XFS_ACL_MAX_ENTRIES(ip->i_mount) - acl->a_count);
 
-		error = xfs_attr_set(ip, ea_name, (unsigned char *)xfs_acl,
-				len, ATTR_ROOT);
+		error = xfs_attr_set(ip, ea_name, strlen(ea_name),
+				     (unsigned char *)xfs_acl, len, ATTR_ROOT);
 
 		kmem_free(xfs_acl);
 	} else {
 		/*
 		 * A NULL ACL argument means we want to remove the ACL.
 		 */
-		error = xfs_attr_remove(ip, ea_name, ATTR_ROOT);
+		error = xfs_attr_remove(ip, ea_name,
+					strlen(ea_name),
+					ATTR_ROOT);
 
 		/*
 		 * If the attribute didn't exist to start with that's fine.
diff --git a/fs/xfs/xfs_attr_item.c b/fs/xfs/xfs_attr_item.c
index b8db2da..5cf87e7 100644
--- a/fs/xfs/xfs_attr_item.c
+++ b/fs/xfs/xfs_attr_item.c
@@ -530,7 +530,7 @@ xfs_attri_recover(
 		return error;
 
 	error = xfs_attr_args_init(&args, ip, attrip->name,
-					attrp->alfi_attr_flags);
+			attrp->alfi_name_len, attrp->alfi_attr_flags);
 	if (error)
 		return error;
 
diff --git a/fs/xfs/xfs_ioctl.c b/fs/xfs/xfs_ioctl.c
index 6cd9218..b0a4b37 100644
--- a/fs/xfs/xfs_ioctl.c
+++ b/fs/xfs/xfs_ioctl.c
@@ -439,6 +439,7 @@ xfs_attrmulti_attr_get(
 {
 	unsigned char		*kbuf;
 	int			error = -EFAULT;
+	size_t			namelen;
 
 	if (*len > XFS_XATTR_SIZE_MAX)
 		return -EINVAL;
@@ -446,7 +447,9 @@ xfs_attrmulti_attr_get(
 	if (!kbuf)
 		return -ENOMEM;
 
-	error = xfs_attr_get(XFS_I(inode), name, kbuf, (int *)len, flags);
+	namelen = strlen(name);
+	error = xfs_attr_get(XFS_I(inode), name, namelen,
+			     kbuf, (int *)len, flags);
 	if (error)
 		goto out_kfree;
 
@@ -468,6 +471,7 @@ xfs_attrmulti_attr_set(
 {
 	unsigned char		*kbuf;
 	int			error;
+	size_t			namelen;
 
 	if (IS_IMMUTABLE(inode) || IS_APPEND(inode))
 		return -EPERM;
@@ -478,7 +482,8 @@ xfs_attrmulti_attr_set(
 	if (IS_ERR(kbuf))
 		return PTR_ERR(kbuf);
 
-	error = xfs_attr_set(XFS_I(inode), name, kbuf, len, flags);
+	namelen = strlen(name);
+	error = xfs_attr_set(XFS_I(inode), name, namelen, kbuf, len, flags);
 	if (!error)
 		xfs_forget_acl(inode, name, flags);
 	kfree(kbuf);
@@ -492,10 +497,12 @@ xfs_attrmulti_attr_remove(
 	uint32_t		flags)
 {
 	int			error;
+	size_t			namelen;
 
 	if (IS_IMMUTABLE(inode) || IS_APPEND(inode))
 		return -EPERM;
-	error = xfs_attr_remove(XFS_I(inode), name, flags);
+	namelen = strlen(name);
+	error = xfs_attr_remove(XFS_I(inode), name, namelen, flags);
 	if (!error)
 		xfs_forget_acl(inode, name, flags);
 	return error;
diff --git a/fs/xfs/xfs_iops.c b/fs/xfs/xfs_iops.c
index ab605fe..f7b1e83 100644
--- a/fs/xfs/xfs_iops.c
+++ b/fs/xfs/xfs_iops.c
@@ -60,8 +60,10 @@ xfs_initxattrs(
 	int			error = 0;
 
 	for (xattr = xattr_array; xattr->name != NULL; xattr++) {
-		error = xfs_attr_set(ip, xattr->name, xattr->value,
-				      xattr->value_len, ATTR_SECURE);
+		error = xfs_attr_set(ip, xattr->name,
+				     strlen(xattr->name),
+				     xattr->value, xattr->value_len,
+				     ATTR_SECURE);
 		if (error < 0)
 			break;
 	}
diff --git a/fs/xfs/xfs_trans_attr.c b/fs/xfs/xfs_trans_attr.c
index 4d138a9..7e20721 100644
--- a/fs/xfs/xfs_trans_attr.c
+++ b/fs/xfs/xfs_trans_attr.c
@@ -201,7 +201,7 @@ xfs_attr_finish_item(
 		/* Only need to initialize args context once */
 		name_value = ((char *)attr) + sizeof(struct xfs_attr_item);
 		error = xfs_attr_args_init(args, attr->xattri_ip, name_value,
-						attr->xattri_flags);
+					attr->xattri_name_len, attr->xattri_flags);
 		if (error)
 			goto out;
 
diff --git a/fs/xfs/xfs_xattr.c b/fs/xfs/xfs_xattr.c
index 031f720..27a3fa4 100644
--- a/fs/xfs/xfs_xattr.c
+++ b/fs/xfs/xfs_xattr.c
@@ -27,6 +27,7 @@ xfs_xattr_get(const struct xattr_handler *handler, struct dentry *unused,
 	int xflags = handler->flags;
 	struct xfs_inode *ip = XFS_I(inode);
 	int error, asize = size;
+	size_t namelen = strlen(name);
 
 	/* Convert Linux syscall to XFS internal ATTR flags */
 	if (!size) {
@@ -34,7 +35,7 @@ xfs_xattr_get(const struct xattr_handler *handler, struct dentry *unused,
 		value = NULL;
 	}
 
-	error = xfs_attr_get(ip, (unsigned char *)name, value, &asize, xflags);
+	error = xfs_attr_get(ip, name, namelen, value, 	&asize, xflags);
 	if (error)
 		return error;
 	return asize;
@@ -70,6 +71,7 @@ xfs_xattr_set(const struct xattr_handler *handler, struct dentry *unused,
 	int			xflags = handler->flags;
 	struct xfs_inode	*ip = XFS_I(inode);
 	int			error;
+	size_t			namelen = strlen(name);
 
 	/* Convert Linux syscall to XFS internal ATTR flags */
 	if (flags & XATTR_CREATE)
@@ -78,9 +80,9 @@ xfs_xattr_set(const struct xattr_handler *handler, struct dentry *unused,
 		xflags |= ATTR_REPLACE;
 
 	if (!value)
-		return xfs_attr_remove(ip, (unsigned char *)name, xflags);
-	error = xfs_attr_set(ip, (unsigned char *)name,
-				(void *)value, size, xflags);
+		return xfs_attr_remove(ip, name,
+				       namelen, xflags);
+	error = xfs_attr_set(ip, name, namelen, (void *)value, size, xflags);
 	if (!error)
 		xfs_forget_acl(inode, name, xflags);
 
-- 
2.7.4




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