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Unix File has 000 access when written
Post 302349380 by mike_s_6 on Monday 31st of August 2009 09:34:30 PM
08-31-2009
Unix File has 000 access when written
Good day!
I would just like to ask about an issue I encountered. There is a Java program (version1.3) that we use that is hosted in Unix (HP-UX B.11.11 U), and one of its functions copies a file and writes it to another directory. It usually runs fine, but one day, it wrote a file that had 000 access on it. As far as I know, this happened only once ever in the whole run of the system. This caused a lot of problems because the file couldn't be read or deleted.
Do you guys have any idea how the file could have been written with such an access? Aside from someone playing a really bad joke and running chmod on it?
I would just like to ask about an issue I encountered. There is a Java program (version1.3) that we use that is hosted in Unix (HP-UX B.11.11 U), and one of its functions copies a file and writes it to another directory. It usually runs fine, but one day, it wrote a file that had 000 access on it. As far as I know, this happened only once ever in the whole run of the system. This caused a lot of problems because the file couldn't be read or deleted.
Do you guys have any idea how the file could have been written with such an access? Aside from someone playing a really bad joke and running chmod on it?
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LEARN ABOUT DEBIAN
dm
DM(8) BSD System Manager's Manual DM(8) NAME
dm -- dungeon master SYNOPSIS
ln -s dm game DESCRIPTION
dm is a program used to regulate game playing. dm expects to be invoked with the name of a game that a user wishes to play. This is done by creating symbolic links to dm, in the directory /usr/games for all of the regulated games. The actual binaries for these games should be placed in a ``hidden'' directory, /usr/lib/games/dm, that may only be accessed by the dm program. dm determines if the requested game is available and, if so, runs it. The file /etc/dm.conf controls the conditions under which games may be run. The file /etc/nogames may be used to ``turn off'' game playing. If the file exists, no game playing is allowed; the contents of the file will be displayed to any user requesting a game. FILES
/etc/dm.conf configuration file /etc/nogames turns off game playing /usr/lib/games/dm directory of ``real'' binaries /var/games/games.log game logging file SEE ALSO
dm.conf(5) HISTORY
The dm command appeared in 4.3BSD-Tahoe. SECURITY CONSIDERATIONS
Two issues result from dm running the games setgid ``games''. First, all games that allow users to run UNIX commands should carefully set both the real and effective group ids immediately before executing those commands. Probably more important is that dm never be setgid any- thing but ``games'' so that compromising a game will result only in the user's ability to play games at will. Secondly, games which previ- ously had no reason to run setgid and which accessed user files may have to be modified. BSD May 31, 1993 BSD