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Allow longer commandlines in MOUNT and IMGMOUNT.

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Fix crash reported by MiniMax (mount -u 0).
Fix bug reported by Tearex ("config -get" broken).
Add some protection that makes it harder to mount a directory from
within an executable.
Add some protection to make mounting from command /c much harder.
Add a securemode commandline switch to config and dosbox that should make it
impossible to mount a location when this isn't wanted by the user. (Addresses concerns of CVE-2007-6328)
Update documentation to reflect this.


Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@3114
This commit is contained in:
Peter Veenstra 2008-03-02 11:13:47 +00:00
parent f2c40b9407
commit 3f2e4fbd83
9 changed files with 156 additions and 38 deletions
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20
docs/dosbox.1
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@ -8,6 +8,7 @@ dosbox \- an x86/DOS emulator with sound/graphics
.B [\-fullscreen]
.B [\-startmapper]
.B [\-noautoexec]
.B [\-securemode]
.BI "[\-scaler " scaler ]
.BI "[\-forcescaler " scaler ]
.BI "[\-conf " configfile ]
@ -41,6 +42,13 @@ A summary of options is included below.
.B \-noautoexec
Skips the [autoexec] section of the loaded configuration file.
.TP
.B \-securemode
.RB "Same as " \-noautoexec ", but adds " "config.com \-securemode"
at the end of
.I AUTOEXEC.BAT
(which in turn disables any changes to how the drives are mounted
.RB "inside " dosbox )
.TP
.BI \-scaler " scaler"
.RI "Uses the graphical scaler specified by " scaler ". See the configuration"
file for the available scalers
@ -67,7 +75,7 @@ wish to execute on startup. Multiple
.IR langfile .
.TP
.B \-exit
.BR dosbox " will close itself when the DOS program specified by " file "ends."
.BR dosbox " will close itself when the DOS program specified by "file " ends."
.TP
.BI \-machine " machinetype
.RB "Setup " dosbox " to emulate a specific type of machine."
@ -153,9 +161,19 @@ Display the amount of free memory
.TP
.B CONFIG [\-writeconf] [\-writelang] file
.LP
.B CONFIG -securemode
.LP
.RB "Write the current configuration or language settings to " file ,
which is located on the local filesystem. Not a mounted drive in
.BR dosbox .
.TP
.B \-securemode
.RB Switches dosbox " to a more secure mode. In this mode the"
.RI "internal commands " MOUNT ", " IMGMOUNT " and " BOOT " won\'t work."
It\'s not possible
either to create a new configfile or languagefile in this mode.
(Warning you can only undo this mode by restarting
.BR dosbox .)
.LP
The configuration file controls various settings of
.BR dosbox ": The amount of emulated memory,"