Module proc 

Raw /proc reading for process tree construction.

Only contains functions needed to build and maintain the process tree: comm (cmd name), status (ppid/user/tgid), stat (start_time), uid lookup.

Functions

parse_proc_entry

Parse /proc/{pid}/status into a (PidNode, ProcInfo) pair.

read_proc_comm

Read the command name for a PID from /proc/{pid}/comm.

read_proc_start_time_ns

Read the process start time in nanoseconds from /proc/{pid}/stat.

uid_to_username

Convert a UID to a username by looking up /etc/passwd.