strace

[Chakravarthi]

as normal user when i run the following command
strace -o /tmp/a ping chakri

i get the following error message
strace: exec: Operation not permitted


any idea why this happens

regards
chakri

[Huc_1]

ls -l /usr/ping gives
-rwsr-xr-x 1 root root 32908 Feb 17 2004 /bin/ping

notice the s
set user or group ID on execution

the following command works !

strace -o /tmp/a df
but ls -l /usr/df gives
-rwxr-xr-x 1 root root 33852 May 4 18:26 /bin/df

Jean-Pierre

[Suresh Pai]

The man page for strace gives you an explanation (and a possible solution). It is, as explained by the other user, a SETUID issue. The possible solution described in the man page is to install a special version of strace with mode 'rwsr-xr--', user root and group trace, where memers of the trace group are trusted users.