/proc/*/mem weirdness

Harald Koenig (koenig@tat.physik.uni-tuebingen.de)
Fri, 12 Mar 1999 11:26:36 +0100

using plain Linux 2.2.2 I'd like to read the memory from another process using

# cat /proc/17940/mem
cat: /proc/17940/mem: No such process

pid 17940 _is_ running and working fine. reading /proc/*/mem fails for
_every_ PID in my system, except when I try /proc/self/, here I get

# cat /proc/self/mem
cat: /proc/self/mem: Permission denied

what's going on here? of course this all is done as root...

Harald

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