Messages in this thread | | | From | Peeter Joot <> | Subject | Re: linux-kernel-digest V1 #2839 (writable /proc/<pid>/cmdli | Date | Mon, 16 Nov 1998 17:39:16 -0500 |
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Hi Andy,
The sendmail solution that uses kmem is only for SCO if I read the code right. On linux all that is required is coping a new string into argv[0]. This is much simpler then messing around with /proc at least in our case (db2) where we have a multi-process based system rather than a multi-thread based solution.
But, your point about threads is a good one, because argv[0] would be shared for all threads and a writable /proc/<pid>/cmdline could be used to rename the ps output for different threads/clones, and overwriting argv[0] wouldn't work in this case.
Peeter
IINUS1.SMTP4@D03AU015 on 11/16/98 05:23:00 AM Please respond to IINUS1.SMTP4 @ VM To: Peeter Joot/Toronto/IBM@IBMCA cc: Subject: Re: linux-kernel-digest V1 #2839
> it is already possible (see sendmail's function setproctitle in src/con= f.c): > > 277 ? S 0:00 sendmail: accepting connections on port 25
The sendmail solution (kludge? at least on Linux :) requires write access= to /dev/kmem which only root can do. It would be a lot cleaner if you could indeed modify the cmd= line via the /proc filesystem. I really like the idea, especially when programming with thre= ads; ps should be more useful if you could easily "rename" threads without root privileges. It = sure beats seeing 20 ps entries with the original command line..
> - -- > Pavel Jan=EDk ml. > Pavel.Janik@inet.cz
Andy
-- Andy Lo A Foe, arloafoe@cs.vu.nl | Linux v2.1.128 | PII 266 http://www.cs.vu.nl/~arloafoe | GSM: 0622-440695 | Bebox 133 http://orbital.xs4all.nl/andy | ICQ: 7472949 | IRCNet: Adnans
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