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authorAndreas Gruenbacher <agruenba@redhat.com>2016-09-29 17:48:40 +0200
committerAl Viro <viro@zeniv.linux.org.uk>2016-10-07 20:10:43 -0400
commit5f6e59ae8277cef221fdbf9b12f0c4f80db59944 (patch)
treebe029e6b617f66cb314481283bd5cf6553495e76
parentd0a5b995a308347fdb1bb0412df32acd0312523b (diff)
downloadlinux-5f6e59ae8277cef221fdbf9b12f0c4f80db59944.tar.bz2
vfs: Use IOP_XATTR flag for bad-inode handling
With this change, all the xattr handler based operations will produce an -EIO result for bad inodes, and we no longer only depend on inode->i_op to be set to bad_inode_ops. Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
-rw-r--r--fs/bad_inode.c21
-rw-r--r--fs/xattr.c8
2 files changed, 8 insertions, 21 deletions
diff --git a/fs/bad_inode.c b/fs/bad_inode.c
index 3ba385eaa26e..7bb153c33459 100644
--- a/fs/bad_inode.c
+++ b/fs/bad_inode.c
@@ -100,29 +100,12 @@ static int bad_inode_setattr(struct dentry *direntry, struct iattr *attrs)
return -EIO;
}
-static int bad_inode_setxattr(struct dentry *dentry, struct inode *inode,
- const char *name, const void *value, size_t size, int flags)
-{
- return -EIO;
-}
-
-static ssize_t bad_inode_getxattr(struct dentry *dentry, struct inode *inode,
- const char *name, void *buffer, size_t size)
-{
- return -EIO;
-}
-
static ssize_t bad_inode_listxattr(struct dentry *dentry, char *buffer,
size_t buffer_size)
{
return -EIO;
}
-static int bad_inode_removexattr(struct dentry *dentry, const char *name)
-{
- return -EIO;
-}
-
static const struct inode_operations bad_inode_ops =
{
.create = bad_inode_create,
@@ -142,10 +125,7 @@ static const struct inode_operations bad_inode_ops =
.permission = bad_inode_permission,
.getattr = bad_inode_getattr,
.setattr = bad_inode_setattr,
- .setxattr = bad_inode_setxattr,
- .getxattr = bad_inode_getxattr,
.listxattr = bad_inode_listxattr,
- .removexattr = bad_inode_removexattr,
};
@@ -175,6 +155,7 @@ void make_bad_inode(struct inode *inode)
inode->i_atime = inode->i_mtime = inode->i_ctime =
current_fs_time(inode->i_sb);
inode->i_op = &bad_inode_ops;
+ inode->i_opflags &= ~IOP_XATTR;
inode->i_fop = &bad_file_ops;
}
EXPORT_SYMBOL(make_bad_inode);
diff --git a/fs/xattr.c b/fs/xattr.c
index 38b52a356d1b..1f5d0b48422a 100644
--- a/fs/xattr.c
+++ b/fs/xattr.c
@@ -58,8 +58,11 @@ xattr_resolve_name(struct inode *inode, const char **name)
const struct xattr_handler **handlers = inode->i_sb->s_xattr;
const struct xattr_handler *handler;
- if (!(inode->i_opflags & IOP_XATTR))
+ if (!(inode->i_opflags & IOP_XATTR)) {
+ if (unlikely(is_bad_inode(inode)))
+ return ERR_PTR(-EIO);
return ERR_PTR(-EOPNOTSUPP);
+ }
for_each_xattr_handler(handlers, handler) {
const char *n;
@@ -168,6 +171,9 @@ int __vfs_setxattr_noperm(struct dentry *dentry, const char *name,
}
} else if (issec) {
const char *suffix = name + XATTR_SECURITY_PREFIX_LEN;
+
+ if (unlikely(is_bad_inode(inode)))
+ return -EIO;
error = security_inode_setsecurity(inode, suffix, value,
size, flags);
if (!error)