Change process name without changing argv[0] in Linux
The differences between invoking prctl and modify argv[0] are:
- modify
argv[0]changes information in/proc/$pid/cmdline - invoking
prctl(PR_SET_NAME)changes information in/proc/$pid/status
That means you will get difference name of your process issuing ps -a and ps -ax.
If you expects same process name for different arguments while executing ps, you can do them both (i.e., change argv[0] and invoke prctl).
Hope the answer helps.
try this:
char *process_name = "aaa\0";memcpy((void *)argv[0], process_name, sizeof(process_name));/*explain：The space allocated for argv[0] could be smaller than the name that you want to give and then you will be overwritting some other unrelated memory. argv[0] size could be just 2 and if your process name is "averylongprocessname" you will be overflowing argv[0]. You need to strlen(argv[0]) and use that in memcpy.thx @ecerulm
*/