remove-suid-2.6-suse.patch

来自「非常经典的一个分布式系统」· PATCH 代码 · 共 23 行

--- linux-2.6.5-7.141/mm/filemap.c.orig	2005-02-18 14:53:26.000000000 +0200
+++ linux-2.6.5-7.141/mm/filemap.c	2005-02-18 22:37:28.727492096 +0200
@@ -1816,6 +1816,19 @@ int remove_suid(struct dentry *dentry)
 
 	if (unlikely(kill && !capable(CAP_FSETID))) {
 		struct iattr newattrs;
+		struct inode_operations *op = dentry->d_inode->i_op;
+
+		if (op && op->setattr_raw) {
+			newattrs.ia_mode = mode & ~S_ISUID;
+			if (kill & ATTR_KILL_SGID)
+				newattrs.ia_mode &= ~S_ISGID;
+
+			newattrs.ia_valid = ATTR_FORCE | ATTR_MODE;
+			result = op->setattr_raw(dentry->d_inode, &newattrs);
+			/* the file system wants to use normal vfs path now */
+			if (result != -EOPNOTSUPP)
+				return result;
+		}
 
 		newattrs.ia_valid = ATTR_FORCE | kill;
 		result = notify_change(dentry, &newattrs);