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Date: Fri, 2 Mar 2012 11:46:05 +0100
From: Corinna Vinschen <corinna-cygwin AT cygwin DOT com>
To: cygwin AT cygwin DOT com
Subject: base-files: New files to fix permission issues (was Re: 1.7.10/1.7.11: .Net programs started from a cygwin console may fail.)
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On Mar  1 11:08, Corinna Vinschen wrote:
>   # Fix a problem introduced by older versions of setup.exe
>   [...]

David, ping?  Can we add the below two files to base-files asap and
remove the tmp/temp workaround, please?

/etc/profile.d/1777fix.csh:

  #!/bin/tcsh
  # Fix a problem introduced by older versions of setup.exe
  # Read comments in /etc/profile.d/1777fix.sh for more information.
  set GUARDFILE = "/etc/.1777fix"
  if ( ! -f "${GUARDFILE}" ) then
    /bin/bash /etc/profile.d/1777fix.sh
  endif

/etc/profile.d/1777fix.sh:

  #!/bin/bash
  # Fix a problem introduced by older versions of setup.exe
  # Directories with 1777 permissions were erroneously created
  # with 777 inheritable default permissions.  This is a security
  # problem for non-Cygwin apps using these folders.  This is
  # especially tragic in case of /tmp.
  GUARDFILE="/etc/.1777fix"
  DIRLIST="/home /tmp /usr/tmp /var/log /var/run"
  if [ ! -f "${GUARDFILE}" ]
  then
    cnt=0
    success=0
    for file in ${DIRLIST}
    do
      # We test if the default group or other permissions are rwx.
      # If so, it's dangerous and highly likely that these are still
      # the permissions set by setup.exe
      if getfacl "${file}" | grep -Eq 'default:(group:|other):rwx'
      then
	cnt=$(expr $cnt + 1)
	setfacl -m d:g::r-x,d:o:r-x "${file}" 2>/dev/null \
	&& success=$(expr $success + 1)
      fi
    done
    # If no file needed treatment, or if all setfacl calls succeeded,
    # create the
    [ $cnt -eq  $success ] && touch "${GUARDFILE}"
  fi


Thanks,
Corinna

-- 
Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Project Co-Leader          cygwin AT cygwin DOT com
Red Hat

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