proc_pid_personality(5) File Formats Manual proc_pid_personality(5)

/proc/pid/personality - execution domain

/proc/pid/personality (since Linux 2.6.28)
This read-only file exposes the process's execution domain, as set by personality(2). The value is displayed in hexadecimal notation.
Permission to access this file is governed by a ptrace access mode PTRACE_MODE_ATTACH_FSCREDS check; see ptrace(2).

proc(5)

2024-05-02 Linux man-pages 6.9.1