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-rw-r--r--fs/attr.c20
1 files changed, 14 insertions, 6 deletions
diff --git a/fs/attr.c b/fs/attr.c
index 5c45909..83c8430 100644
--- a/fs/attr.c
+++ b/fs/attr.c
@@ -47,7 +47,7 @@ int setattr_prepare(struct dentry *dentry, struct iattr *attr)
/* If force is set do it anyway. */
if (ia_valid & ATTR_FORCE)
- return 0;
+ goto kill_priv;
/* Make sure a caller can chown. */
if ((ia_valid & ATTR_UID) &&
@@ -80,6 +80,16 @@ int setattr_prepare(struct dentry *dentry, struct iattr *attr)
return -EPERM;
}
+kill_priv:
+ /* User has permission for the change */
+ if (ia_valid & ATTR_KILL_PRIV) {
+ int error;
+
+ error = security_inode_killpriv(dentry);
+ if (error)
+ return error;
+ }
+
return 0;
}
EXPORT_SYMBOL(setattr_prepare);
@@ -220,13 +230,11 @@ int notify_change(struct dentry * dentry, struct iattr * attr, struct inode **de
if (!(ia_valid & ATTR_MTIME_SET))
attr->ia_mtime = now;
if (ia_valid & ATTR_KILL_PRIV) {
- attr->ia_valid &= ~ATTR_KILL_PRIV;
- ia_valid &= ~ATTR_KILL_PRIV;
error = security_inode_need_killpriv(dentry);
- if (error > 0)
- error = security_inode_killpriv(dentry);
- if (error)
+ if (error < 0)
return error;
+ if (error == 0)
+ ia_valid = attr->ia_valid &= ~ATTR_KILL_PRIV;
}
/*
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