cvs commit: src/sys/kern kern_prot.c

[Maxim Sobolev]

sobomax     2005-02-11 14:02:42 UTC

  FreeBSD src repository

  Modified files:
    sys/kern             kern_prot.c 
  Log:
  Add SIGTHR (32) into list of signals permitted to be delivered to the
  suid application. The problem is that Linux applications using old Linux
  threads (pre-NPTL) use signal 32 (linux SIGRTMIN) for communication between
  thread-processes. If such an linux application is installed suid or sgid
  and security.bsd.conservative_signals=1 (default), then permission will be
  denied to send such a signal and the application will freeze.
  
  I believe the same will be true for native applications that use libthr,
  since libthr uses SIGTHR for implementing conditional variables.
  
  PR:             72922
  Submitted by:   Andriy Gapon <avg at icyb.net.ua>
  MFC after:      2 weeks
  
  Revision  Changes    Path
  1.192     +1 -0      src/sys/kern/kern_prot.c