Re: SVGATextMode 1.8 /tmp race

From: Ben Collins (bmcat_private)
Date: Thu Oct 22 1998 - 08:16:47 PDT

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    First off, savetextmode is NOT part of SVGATextMode, it is a script from
    svgalib. I checked the savetextmode on my debian 2.0 system (svgalib
    1.2.13):
    
    [root@goodguy(11:10am)-~]%cat /usr/bin/savetextmode
    #!/bin/sh
    
    set -o noclobber
    
    restoretextmode -w /dev/stdout > /tmp/textregs
    restorefont -w /dev/stdout > /tmp/fontdata
    
    The noclobber keeps it from overwriting any files. However, from the
    origianl svgalib source the script looks like this:
    
    [root@goodguy(11:13am)-~/svgalib-1.3.0/utils]%cat savetextmode
    #!/bin/sh
    restoretextmode -w /tmp/textregs
    restorefont -w /tmp/fontdata
    
    This WILL overwrite any files. So if you use the base svgalib, then
    you have a problem. NOTE: The Debian package for svgalib 1.3 directs the
    output to /etc/vga, so it is safe. I'm not sure if redhat has this changed
    or not.
    
    On Thu, 21 Oct 1999, Adrian Voinea wrote:
    
    > Hello,
    > savetextmode, a utility that comes with SVGATextMode 1.8, saves the text
    > mode data in /tmp, in two files with the mode 644:
    >
    > [/tmp]
    > root@Death# ls -lA
    > total 1
    > drwxrwxrwx   2 root     gods         1024 Sep 24  1998 .X11-unix/
    >
    > [/tmp]
    > root@Death# savetextmode
    > svgalib: Using S3 driver (Trio64, 4096K).
    > svgalib: s3: chipsets newer than S3-864 is not supported well yet.
    > svgalib: RAMDAC: Trio64: MCLK = 47.131 MHz
    >
    > [/tmp]
    > root@Death# ls -lA
    > total 35
    > drwxrwxrwx   2 root     gods         1024 Sep 24  1998 .X11-unix/
    > -rw-r--r--   1 root     gods        32768 Oct 21 22:56 fontdata
    > -rw-r--r--   1 root     gods          385 Oct 21 22:56 textregs
    >
    - ------------------------------------------------
    Ben Collins <b.m.collinsat_private>
    UnixGroup Admin - NASA LaRC
    
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