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- Newsgroups: comp.unix.bsd
- Path: sparky!uunet!elroy.jpl.nasa.gov!usc!cs.utexas.edu!wotan.compaq.com!moxie!hackney
- From: hackney@moxie.hou.tx.us (Greg Hackney)
- Subject: 386BSD - Bug in UFS file system + proposed fix
- Message-ID: <1992Dec16.012248.8123@moxie.hou.tx.us>
- Sender: hackney@moxie.hou.tx.us (Greg Hackney)
- Organization: None
- Date: Wed, 16 Dec 1992 01:22:48 GMT
- Lines: 45
-
- [ I posted this once, but I'm reasonably sure it didn't make it out ]
-
- There is a major bug in the 386BSD UFS code relating to file permissions.
- The major symptom is:
-
- Can't read most files that you don't own on a remote NFS 386BSD system,
- although there is public read permission, i.e.:
-
- -r--r--r-- 1 root other 5 Dec 15 19:15 /tmp/hell
-
- A very minor symptom is you can't read some LOCAL files, although
- there is public read permission, i.e. a file that looks like:
-
- -------r-- 1 root other 5 Dec 15 19:15 /tmp/hell
-
- [ This functionality seems broken on SunOS 4.1 too, but not on USL S5R4. ]
-
- Attached is the proposed fix for 386BSD.
- --
- Greg Hackney hackney@compaq.com
- Mike Busby mcb@compaq.com
-
- ---< cut here >---
-
- *** sys.386bsd/ufs/ufs_vnops.c.orig Tue Dec 15 19:07:09 1992
- --- sys.386bsd/ufs/ufs_vnops.c Tue Dec 15 19:06:55 1992
- ***************
- *** 201,207 ****
- found:
- ;
- }
- ! if ((ip->i_mode & mode) == mode)
- return (0);
- return (EACCES);
- }
- --- 201,207 ----
- found:
- ;
- }
- ! if ((ip->i_mode & mode) != 0)
- return (0);
- return (EACCES);
- }
-
-
-