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# ROCK Linux: rock-src/package/base/linux24/81-reiserfs-suiddir.patch
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created by Clifford Wolf and Rene Rebe

--- ./Documentation/Configure.help.orig	2003-04-29 21:57:54.000000000 +0200
+++ ./Documentation/Configure.help	2003-04-29 22:28:05.000000000 +0200
@@ -15233,6 +15233,32 @@
   performance cost of it.  If you are fine-tuning reiserfs, say Y,
   otherwise say N.
 
+Reiserfs SUID on Directory Extension
+CONFIG_REISERFS_SUIDDIR
+  As you might know, the SGID flag has a special function on directories:
+  files within that directories will be owned by the same group that also
+  owns the directory - which is useful for creating directories which are
+  shared between the members of a group.
+
+  But that only makes sense if the umask is set to give full permissions to
+  the group (e.g. 007 or 002). Noone would do that if there is a system-wide
+  'users' group - so some distributions add an extra group for every user
+  which lets the /etc/group file grow very fast and makes the admins life
+  harder ...
+
+  Activating this feture adds a function to the SUID flag on directories,
+  which usually has no function at all:
+
+  If the SUID flag is set for a diectory, all new files in that directory
+  will get the same rights in the group-field as they have in their
+  user-field.  So, if one sets both - SUID and SGID - on a directory, it
+  will also work with a umask like 022 or 077 and there is no more need for
+  an extra group for every user.
+
+  Also, the SUID flag will be set to all subdirectories of a SUID directory
+  (as it is already now with the SGID flag on directories).
+
+
 Second extended fs support
 CONFIG_EXT2_FS
   This is the de facto standard Linux file system (method to organize
--- ./fs/Config.in.orig	2002-12-11 19:42:57.000000000 +0100
+++ ./fs/Config.in	2003-04-29 22:27:01.000000000 +0200
@@ -11,6 +11,7 @@
 tristate 'Reiserfs support' CONFIG_REISERFS_FS
 dep_mbool '  Enable reiserfs debug mode' CONFIG_REISERFS_CHECK $CONFIG_REISERFS_FS
 dep_mbool '  Stats in /proc/fs/reiserfs' CONFIG_REISERFS_PROC_INFO $CONFIG_REISERFS_FS
+dep_mbool '  Reiserfs SUID on Directory Extension' CONFIG_REISERFS_SUIDDIR $CONFIG_REISERFS_FS
 
 dep_tristate 'ADFS file system support (EXPERIMENTAL)' CONFIG_ADFS_FS $CONFIG_EXPERIMENTAL
 dep_mbool '  ADFS write support (DANGEROUS)' CONFIG_ADFS_FS_RW $CONFIG_ADFS_FS $CONFIG_EXPERIMENTAL
--- ./fs/reiserfs/namei.c.orig	2003-04-29 21:55:36.000000000 +0200
+++ ./fs/reiserfs/namei.c	2003-04-29 22:27:14.000000000 +0200
@@ -518,6 +518,14 @@
     } else
         inode->i_gid = current->fsgid;
 
+#ifdef CONFIG_REISERFS_SUIDDIR
+    if (dir->i_mode & S_ISUID) {
+       inode->i_mode |= (inode->i_mode & 0700) >> 3;
+       if (S_ISDIR(inode->i_mode))
+           inode->i_mode |= S_ISUID;
+    }
+#endif
+
     return 0 ;
 }