[so] tema 2 linux

[Octavian Purdila]

>    1. Daca folosesc LD_PRELOAD=libtid.so imi da erori la executarea
>    ls/cat/orice program facut de mine
>    [root@localhost tema2]# export LD_PRELOAD=libtid.so
>    [root@localhost tema2]# ls
>    ls: relocation error: ./libtid.so: undefined symbol: dlopen
>    (pt compilare libtid.so execut gcc -shared -o libtid.so libtid.c)
>

Ai nevoie de gcc -shared -o libtid.so libtid.c -ldl

>    2. Daca folosesc LD_LIBRARY_PATH=. imi da eroare la compilare
>    gcc -shared -o libtid.so libtid.c
>    gcc -o tester tester.c -L. -I. -ltid
>    ./libtid.so: undefined reference to `dlopen'
>    ./libtid.so: undefined reference to `dlsym'
>    collect2: ld returned 1 exit status
>    make: *** [tester] Error 1
>    (in libtid.c/libtid.h am inclus <dlfnc.h>)
>

gcc -shared -o libtid.so libtid.c -ldl


>    3. Daca am doar kernel 2.4 cum aflu` numele procesului si CPUtime ?
>    (care pe kernel 2.6 se puteau afla din /proc/pid/stat)
>
>

Le poti afla tot din /proc/pid/stat, numele procesului fiind al doilea
camp, iar CPUTime (user) fiind al 14 camp (la fel ca si la 2.6 deci :).

tavi