kill boilerplate around posix_acl_chmod_masq()

new helper: posix_acl_chmod(&acl, gfp, mode). Replaces acl with modified clone or with NULL if that has failed; returns 0 or -ve on error. All callers of posix_acl_chmod_masq() switched to that - they'd been doing exactly the same thing. Signed-off-by: Al Viro <[email protected]>
ambv · Jul 25, 2011 · bc26ab5 · bc26ab5
1 parent 4482a08
commit bc26ab5
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Showing 14 changed files with 139 additions and 168 deletions.
diff --git a/fs/9p/acl.c b/fs/9p/acl.c
@@ -162,21 +162,18 @@ static int v9fs_set_acl(struct dentry *dentry, int type, struct posix_acl *acl)
 int v9fs_acl_chmod(struct dentry *dentry)
 {
 	int retval = 0;
-	struct posix_acl *acl, *clone;
+	struct posix_acl *acl;
 	struct inode *inode = dentry->d_inode;
 
 	if (S_ISLNK(inode->i_mode))
 		return -EOPNOTSUPP;
 	acl = v9fs_get_cached_acl(inode, ACL_TYPE_ACCESS);
 	if (acl) {
-		clone = posix_acl_clone(acl, GFP_KERNEL);
+		retval = posix_acl_chmod(&acl, GFP_KERNEL, inode->i_mode);
+		if (retval)
+			return retval;
+		retval = v9fs_set_acl(dentry, ACL_TYPE_ACCESS, acl);
 		posix_acl_release(acl);
-		if (!clone)
-			return -ENOMEM;
-		retval = posix_acl_chmod_masq(clone, inode->i_mode);
-		if (!retval)
-			retval = v9fs_set_acl(dentry, ACL_TYPE_ACCESS, clone);
-		posix_acl_release(clone);
 	}
 	return retval;
 }

diff --git a/fs/btrfs/acl.c b/fs/btrfs/acl.c
@@ -272,7 +272,7 @@ int btrfs_init_acl(struct btrfs_trans_handle *trans,
 
 int btrfs_acl_chmod(struct inode *inode)
 {
-	struct posix_acl *acl, *clone;
+	struct posix_acl *acl;
 	int ret = 0;
 
 	if (S_ISLNK(inode->i_mode))
@@ -285,17 +285,11 @@ int btrfs_acl_chmod(struct inode *inode)
 	if (IS_ERR_OR_NULL(acl))
 		return PTR_ERR(acl);
 
-	clone = posix_acl_clone(acl, GFP_KERNEL);
+	ret = posix_acl_chmod(&acl, GFP_KERNEL, inode->i_mode);
+	if (ret)
+		return ret;
+	ret = btrfs_set_acl(NULL, inode, acl, ACL_TYPE_ACCESS);
 	posix_acl_release(acl);
-	if (!clone)
-		return -ENOMEM;
-
-	ret = posix_acl_chmod_masq(clone, inode->i_mode);
-	if (!ret)
-		ret = btrfs_set_acl(NULL, inode, clone, ACL_TYPE_ACCESS);
-
-	posix_acl_release(clone);
-
 	return ret;
 }
 

diff --git a/fs/ext2/acl.c b/fs/ext2/acl.c
@@ -316,7 +316,7 @@ ext2_init_acl(struct inode *inode, struct inode *dir)
 int
 ext2_acl_chmod(struct inode *inode)
 {
-	struct posix_acl *acl, *clone;
+	struct posix_acl *acl;
         int error;
 
 	if (!test_opt(inode->i_sb, POSIX_ACL))
@@ -326,14 +326,11 @@ ext2_acl_chmod(struct inode *inode)
 	acl = ext2_get_acl(inode, ACL_TYPE_ACCESS);
 	if (IS_ERR(acl) || !acl)
 		return PTR_ERR(acl);
-	clone = posix_acl_clone(acl, GFP_KERNEL);
+	error = posix_acl_chmod(&acl, GFP_KERNEL, inode->i_mode);
+	if (error)
+		return error;
+	error = ext2_set_acl(inode, ACL_TYPE_ACCESS, acl);
 	posix_acl_release(acl);
-	if (!clone)
-		return -ENOMEM;
-	error = posix_acl_chmod_masq(clone, inode->i_mode);
-	if (!error)
-		error = ext2_set_acl(inode, ACL_TYPE_ACCESS, clone);
-	posix_acl_release(clone);
 	return error;
 }
 

diff --git a/fs/ext3/acl.c b/fs/ext3/acl.c
@@ -326,7 +326,9 @@ ext3_init_acl(handle_t *handle, struct inode *inode, struct inode *dir)
 int
 ext3_acl_chmod(struct inode *inode)
 {
-	struct posix_acl *acl, *clone;
+	struct posix_acl *acl;
+	handle_t *handle;
+	int retries = 0;
         int error;
 
 	if (S_ISLNK(inode->i_mode))
@@ -336,31 +338,24 @@ ext3_acl_chmod(struct inode *inode)
 	acl = ext3_get_acl(inode, ACL_TYPE_ACCESS);
 	if (IS_ERR(acl) || !acl)
 		return PTR_ERR(acl);
-	clone = posix_acl_clone(acl, GFP_KERNEL);
-	posix_acl_release(acl);
-	if (!clone)
-		return -ENOMEM;
-	error = posix_acl_chmod_masq(clone, inode->i_mode);
-	if (!error) {
-		handle_t *handle;
-		int retries = 0;
-
-	retry:
-		handle = ext3_journal_start(inode,
-				EXT3_DATA_TRANS_BLOCKS(inode->i_sb));
-		if (IS_ERR(handle)) {
-			error = PTR_ERR(handle);
-			ext3_std_error(inode->i_sb, error);
-			goto out;
-		}
-		error = ext3_set_acl(handle, inode, ACL_TYPE_ACCESS, clone);
-		ext3_journal_stop(handle);
-		if (error == -ENOSPC &&
-		    ext3_should_retry_alloc(inode->i_sb, &retries))
-			goto retry;
+	error = posix_acl_chmod(&acl, GFP_KERNEL, inode->i_mode);
+	if (error)
+		return error;
+retry:
+	handle = ext3_journal_start(inode,
+			EXT3_DATA_TRANS_BLOCKS(inode->i_sb));
+	if (IS_ERR(handle)) {
+		error = PTR_ERR(handle);
+		ext3_std_error(inode->i_sb, error);
+		goto out;
 	}
+	error = ext3_set_acl(handle, inode, ACL_TYPE_ACCESS, acl);
+	ext3_journal_stop(handle);
+	if (error == -ENOSPC &&
+	    ext3_should_retry_alloc(inode->i_sb, &retries))
+		goto retry;
 out:
-	posix_acl_release(clone);
+	posix_acl_release(acl);
 	return error;
 }
 

diff --git a/fs/ext4/acl.c b/fs/ext4/acl.c
@@ -324,41 +324,37 @@ ext4_init_acl(handle_t *handle, struct inode *inode, struct inode *dir)
 int
 ext4_acl_chmod(struct inode *inode)
 {
-	struct posix_acl *acl, *clone;
+	struct posix_acl *acl;
+	handle_t *handle;
+	int retries = 0;
 	int error;
 
+
 	if (S_ISLNK(inode->i_mode))
 		return -EOPNOTSUPP;
 	if (!test_opt(inode->i_sb, POSIX_ACL))
 		return 0;
 	acl = ext4_get_acl(inode, ACL_TYPE_ACCESS);
 	if (IS_ERR(acl) || !acl)
 		return PTR_ERR(acl);
-	clone = posix_acl_clone(acl, GFP_KERNEL);
-	posix_acl_release(acl);
-	if (!clone)
-		return -ENOMEM;
-	error = posix_acl_chmod_masq(clone, inode->i_mode);
-	if (!error) {
-		handle_t *handle;
-		int retries = 0;
-
-	retry:
-		handle = ext4_journal_start(inode,
-				EXT4_DATA_TRANS_BLOCKS(inode->i_sb));
-		if (IS_ERR(handle)) {
-			error = PTR_ERR(handle);
-			ext4_std_error(inode->i_sb, error);
-			goto out;
-		}
-		error = ext4_set_acl(handle, inode, ACL_TYPE_ACCESS, clone);
-		ext4_journal_stop(handle);
-		if (error == -ENOSPC &&
-		    ext4_should_retry_alloc(inode->i_sb, &retries))
-			goto retry;
+	error = posix_acl_chmod(&acl, GFP_KERNEL, inode->i_mode);
+	if (error)
+		return error;
+retry:
+	handle = ext4_journal_start(inode,
+			EXT4_DATA_TRANS_BLOCKS(inode->i_sb));
+	if (IS_ERR(handle)) {
+		error = PTR_ERR(handle);
+		ext4_std_error(inode->i_sb, error);
+		goto out;
 	}
+	error = ext4_set_acl(handle, inode, ACL_TYPE_ACCESS, acl);
+	ext4_journal_stop(handle);
+	if (error == -ENOSPC &&
+	    ext4_should_retry_alloc(inode->i_sb, &retries))
+		goto retry;
 out:
-	posix_acl_release(clone);
+	posix_acl_release(acl);
 	return error;
 }
 

diff --git a/fs/generic_acl.c b/fs/generic_acl.c
@@ -170,21 +170,18 @@ generic_acl_init(struct inode *inode, struct inode *dir)
 int
 generic_acl_chmod(struct inode *inode)
 {
-	struct posix_acl *acl, *clone;
+	struct posix_acl *acl;
 	int error = 0;
 
 	if (S_ISLNK(inode->i_mode))
 		return -EOPNOTSUPP;
 	acl = get_cached_acl(inode, ACL_TYPE_ACCESS);
 	if (acl) {
-		clone = posix_acl_clone(acl, GFP_KERNEL);
+		error = posix_acl_chmod(&acl, GFP_KERNEL, inode->i_mode);
+		if (error)
+			return error;
+		set_cached_acl(inode, ACL_TYPE_ACCESS, acl);
 		posix_acl_release(acl);
-		if (!clone)
-			return -ENOMEM;
-		error = posix_acl_chmod_masq(clone, inode->i_mode);
-		if (!error)
-			set_cached_acl(inode, ACL_TYPE_ACCESS, clone);
-		posix_acl_release(clone);
 	}
 	return error;
 }

diff --git a/fs/gfs2/acl.c b/fs/gfs2/acl.c
@@ -187,7 +187,7 @@ int gfs2_acl_create(struct gfs2_inode *dip, struct inode *inode)
 
 int gfs2_acl_chmod(struct gfs2_inode *ip, struct iattr *attr)
 {
-	struct posix_acl *acl, *clone;
+	struct posix_acl *acl;
 	char *data;
 	unsigned int len;
 	int error;
@@ -198,25 +198,19 @@ int gfs2_acl_chmod(struct gfs2_inode *ip, struct iattr *attr)
 	if (!acl)
 		return gfs2_setattr_simple(ip, attr);
 
-	clone = posix_acl_clone(acl, GFP_NOFS);
+	error = posix_acl_chmod(&acl, GFP_NOFS, attr->ia_mode);
+	if (error)
+		return error;
+
+	len = posix_acl_to_xattr(acl, NULL, 0);
+	data = kmalloc(len, GFP_NOFS);
 	error = -ENOMEM;
-	if (!clone)
+	if (data == NULL)
 		goto out;
-	posix_acl_release(acl);
-	acl = clone;
-
-	error = posix_acl_chmod_masq(acl, attr->ia_mode);
-	if (!error) {
-		len = posix_acl_to_xattr(acl, NULL, 0);
-		data = kmalloc(len, GFP_NOFS);
-		error = -ENOMEM;
-		if (data == NULL)
-			goto out;
-		posix_acl_to_xattr(acl, data, len);
-		error = gfs2_xattr_acl_chmod(ip, attr, data);
-		kfree(data);
-		set_cached_acl(&ip->i_inode, ACL_TYPE_ACCESS, acl);
-	}
+	posix_acl_to_xattr(acl, data, len);
+	error = gfs2_xattr_acl_chmod(ip, attr, data);
+	kfree(data);
+	set_cached_acl(&ip->i_inode, ACL_TYPE_ACCESS, acl);
 
 out:
 	posix_acl_release(acl);

diff --git a/fs/jffs2/acl.c b/fs/jffs2/acl.c
@@ -332,22 +332,19 @@ int jffs2_init_acl_post(struct inode *inode)
 
 int jffs2_acl_chmod(struct inode *inode)
 {
-	struct posix_acl *acl, *clone;
+	struct posix_acl *acl;
 	int rc;
 
 	if (S_ISLNK(inode->i_mode))
 		return -EOPNOTSUPP;
 	acl = jffs2_get_acl(inode, ACL_TYPE_ACCESS);
 	if (IS_ERR(acl) || !acl)
 		return PTR_ERR(acl);
-	clone = posix_acl_clone(acl, GFP_KERNEL);
+	rc = posix_acl_chmod(&acl, GFP_KERNEL, inode->i_mode);
+	if (rc)
+		return rc;
+	rc = jffs2_set_acl(inode, ACL_TYPE_ACCESS, acl);
 	posix_acl_release(acl);
-	if (!clone)
-		return -ENOMEM;
-	rc = posix_acl_chmod_masq(clone, inode->i_mode);
-	if (!rc)
-		rc = jffs2_set_acl(inode, ACL_TYPE_ACCESS, clone);
-	posix_acl_release(clone);
 	return rc;
 }
 

diff --git a/fs/jfs/acl.c b/fs/jfs/acl.c
@@ -177,8 +177,9 @@ int jfs_init_acl(tid_t tid, struct inode *inode, struct inode *dir)
 
 int jfs_acl_chmod(struct inode *inode)
 {
-	struct posix_acl *acl, *clone;
+	struct posix_acl *acl;
 	int rc;
+	tid_t tid;
 
 	if (S_ISLNK(inode->i_mode))
 		return -EOPNOTSUPP;
@@ -187,22 +188,18 @@ int jfs_acl_chmod(struct inode *inode)
 	if (IS_ERR(acl) || !acl)
 		return PTR_ERR(acl);
 
-	clone = posix_acl_clone(acl, GFP_KERNEL);
-	posix_acl_release(acl);
-	if (!clone)
-		return -ENOMEM;
-
-	rc = posix_acl_chmod_masq(clone, inode->i_mode);
-	if (!rc) {
-		tid_t tid = txBegin(inode->i_sb, 0);
-		mutex_lock(&JFS_IP(inode)->commit_mutex);
-		rc = jfs_set_acl(tid, inode, ACL_TYPE_ACCESS, clone);
-		if (!rc)
-			rc = txCommit(tid, 1, &inode, 0);
-		txEnd(tid);
-		mutex_unlock(&JFS_IP(inode)->commit_mutex);
-	}
+	rc = posix_acl_chmod(&acl, GFP_KERNEL, inode->i_mode);
+	if (rc)
+		return rc;
 
-	posix_acl_release(clone);
+	tid = txBegin(inode->i_sb, 0);
+	mutex_lock(&JFS_IP(inode)->commit_mutex);
+	rc = jfs_set_acl(tid, inode, ACL_TYPE_ACCESS, acl);
+	if (!rc)
+		rc = txCommit(tid, 1, &inode, 0);
+	txEnd(tid);
+	mutex_unlock(&JFS_IP(inode)->commit_mutex);
+
+	posix_acl_release(acl);
 	return rc;
 }
diff --git a/fs/ocfs2/acl.c b/fs/ocfs2/acl.c
@@ -327,7 +327,7 @@ int ocfs2_check_acl(struct inode *inode, int mask)
 int ocfs2_acl_chmod(struct inode *inode)
 {
 	struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
-	struct posix_acl *acl, *clone;
+	struct posix_acl *acl;
 	int ret;
 
 	if (S_ISLNK(inode->i_mode))
@@ -339,15 +339,12 @@ int ocfs2_acl_chmod(struct inode *inode)
 	acl = ocfs2_get_acl(inode, ACL_TYPE_ACCESS);
 	if (IS_ERR(acl) || !acl)
 		return PTR_ERR(acl);
-	clone = posix_acl_clone(acl, GFP_KERNEL);
+	ret = posix_acl_chmod(&acl, GFP_KERNEL, inode->i_mode);
+	if (ret)
+		return ret;
+	ret = ocfs2_set_acl(NULL, inode, NULL, ACL_TYPE_ACCESS,
+			    acl, NULL, NULL);
 	posix_acl_release(acl);
-	if (!clone)
-		return -ENOMEM;
-	ret = posix_acl_chmod_masq(clone, inode->i_mode);
-	if (!ret)
-		ret = ocfs2_set_acl(NULL, inode, NULL, ACL_TYPE_ACCESS,
-				    clone, NULL, NULL);
-	posix_acl_release(clone);
 	return ret;
 }