The vfsmount will be passed down to the LSM hook so that LSMs can compute
pathnames.
Signed-off-by: Tony Jones <[email protected]>
Signed-off-by: Andreas Gruenbacher <[email protected]>
Signed-off-by: John Johansen <[email protected]>
---
fs/unionfs/copyup.c | 5 +++--
fs/unionfs/xattr.c | 4 +++-
fs/xattr.c | 25 ++++++++++++++-----------
include/linux/xattr.h | 2 +-
4 files changed, 21 insertions(+), 15 deletions(-)
--- a/fs/unionfs/copyup.c
+++ b/fs/unionfs/copyup.c
@@ -37,7 +37,7 @@ static int copyup_xattrs(struct dentry *
char *name_list_buf = NULL;
/* query the actual size of the xattr list */
- list_size = vfs_listxattr(old_lower_dentry, NULL, 0);
+ list_size = vfs_listxattr(old_lower_dentry, old_lower_mnt, NULL, 0);
if (list_size <= 0) {
err = list_size;
goto out;
@@ -53,7 +53,8 @@ static int copyup_xattrs(struct dentry *
name_list_buf = name_list; /* save for kfree at end */
/* now get the actual xattr list of the source file */
- list_size = vfs_listxattr(old_lower_dentry, name_list, list_size);
+ list_size = vfs_listxattr(old_lower_dentry, old_lower_mnt, name_list,
+ list_size);
if (list_size <= 0) {
err = list_size;
goto out;
--- a/fs/unionfs/xattr.c
+++ b/fs/unionfs/xattr.c
@@ -134,6 +134,7 @@ out:
ssize_t unionfs_listxattr(struct dentry *dentry, char *list, size_t size)
{
struct dentry *lower_dentry = NULL;
+ struct vfsmount *lower_mnt;
int err = -EOPNOTSUPP;
char *encoded_list = NULL;
@@ -146,9 +147,10 @@ ssize_t unionfs_listxattr(struct dentry
}
lower_dentry = unionfs_lower_dentry(dentry);
+ lower_mnt = unionfs_lower_mnt(dentry);
encoded_list = list;
- err = vfs_listxattr(lower_dentry, encoded_list, size);
+ err = vfs_listxattr(lower_dentry, lower_mnt, encoded_list, size);
out:
unionfs_check_dentry(dentry);
--- a/fs/xattr.c
+++ b/fs/xattr.c
@@ -168,18 +168,20 @@ nolsm:
EXPORT_SYMBOL_GPL(vfs_getxattr);
ssize_t
-vfs_listxattr(struct dentry *d, char *list, size_t size)
+vfs_listxattr(struct dentry *dentry, struct vfsmount *mnt, char *list,
+ size_t size)
{
+ struct inode *inode = dentry->d_inode;
ssize_t error;
- error = security_inode_listxattr(d);
+ error = security_inode_listxattr(dentry);
if (error)
return error;
error = -EOPNOTSUPP;
- if (d->d_inode->i_op && d->d_inode->i_op->listxattr) {
- error = d->d_inode->i_op->listxattr(d, list, size);
- } else {
- error = security_inode_listsecurity(d->d_inode, list, size);
+ if (inode->i_op && inode->i_op->listxattr)
+ error = inode->i_op->listxattr(dentry, list, size);
+ else {
+ error = security_inode_listsecurity(inode, list, size);
if (size && error > size)
error = -ERANGE;
}
@@ -400,7 +402,8 @@ sys_fgetxattr(int fd, char __user *name,
* Extended attribute LIST operations
*/
static ssize_t
-listxattr(struct dentry *d, char __user *list, size_t size)
+listxattr(struct dentry *dentry, struct vfsmount *mnt, char __user *list,
+ size_t size)
{
ssize_t error;
char *klist = NULL;
@@ -413,7 +416,7 @@ listxattr(struct dentry *d, char __user
return -ENOMEM;
}
- error = vfs_listxattr(d, klist, size);
+ error = vfs_listxattr(dentry, mnt, klist, size);
if (error > 0) {
if (size && copy_to_user(list, klist, error))
error = -EFAULT;
@@ -435,7 +438,7 @@ sys_listxattr(char __user *path, char __
error = user_path_walk(path, &nd);
if (error)
return error;
- error = listxattr(nd.path.dentry, list, size);
+ error = listxattr(nd.path.dentry, nd.path.mnt, list, size);
path_put(&nd.path);
return error;
}
@@ -449,7 +452,7 @@ sys_llistxattr(char __user *path, char _
error = user_path_walk_link(path, &nd);
if (error)
return error;
- error = listxattr(nd.path.dentry, list, size);
+ error = listxattr(nd.path.dentry, nd.path.mnt, list, size);
path_put(&nd.path);
return error;
}
@@ -464,7 +467,7 @@ sys_flistxattr(int fd, char __user *list
if (!f)
return error;
audit_inode(NULL, f->f_path.dentry);
- error = listxattr(f->f_path.dentry, list, size);
+ error = listxattr(f->f_path.dentry, f->f_path.mnt, list, size);
fput(f);
return error;
}
--- a/include/linux/xattr.h
+++ b/include/linux/xattr.h
@@ -48,7 +48,7 @@ struct xattr_handler {
ssize_t xattr_getsecurity(struct inode *, const char *, void *, size_t);
ssize_t vfs_getxattr(struct dentry *, struct vfsmount *, char *, void *, size_t);
-ssize_t vfs_listxattr(struct dentry *d, char *list, size_t size);
+ssize_t vfs_listxattr(struct dentry *d, struct vfsmount *, char *list, size_t size);
int vfs_setxattr(struct dentry *, struct vfsmount *, char *, void *, size_t,
int);
int vfs_removexattr(struct dentry *, char *);
--
--
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