cvs commit: src/sys/kern vfs_mount.c

Pawel Jakub Dawidek pjd at
Mon Feb 2 11:03:12 PST 2004

pjd         2004/02/02 11:02:05 PST

  FreeBSD src repository

  Modified files:
    sys/kern             vfs_mount.c 
  Fix many issues related to mount/unmount:
  1. Root from inside a jail was able to unmount any file system
     (except /).
  2. Unprivileged root was able to unmount file systems mounted by
     privileged root (execpt /).
  3. User from inside a jail was able to mount file system when
     sysctl vfs.usermount was set to 1.
  4. User was able to mount file system when vfs.usermount was set to 1
     (that's ok) and unmount it even if vfs.usermount was equal to 0
     (that's not correct).
  Possibility from point 1 was reported by: Dariusz Kowalski <darek at>
  Only a part of this fix will be MFC'ed (if approved).
  PR:             kern/60149
  Reviewed by:    rwatson
  Approved by:    scottl (mentor)
  MFC after:      3 days
  Revision  Changes    Path
  1.118     +33 -8     src/sys/kern/vfs_mount.c

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