/proc/self/cmdline:
./procfs-cmdline-exe\0arg1\0arg 2\0arg3\0
/proc/<pid>/cmdline:
./procfs-cmdline-exe\0arg1\0arg 2\0arg3\0
Result of readlink("/proc/self/exe"): procfs-cmdline-exe
Result of readlink("/proc/<pid>/exe"): procfs-cmdline-exe
readlinkat: Function not implemented
readlinkat: Function not implemented