It does not judge whether the file exists

[Icenowy]

icenowy [ ~ ] $ sudo paxctl-ng -m /usr/bin/qemu-system-x86_63
icenowy [ ~ ] $ echo $?
0
icenowy [ ~ ] $ sudo paxctl-ng -m /usr/bin/qemu-system-x86_64
icenowy [ ~ ] $ echo $?
0
icenowy [ ~ ] $ [ -e /usr/bin/qemu-system-x86_63 ] && echo ok
icenowy [ ~ ] ! [ -e /usr/bin/qemu-system-x86_64 ] && echo ok
ok

[blueness]

okay so set errno = ENOENT. I'll get it into the next release.

[Icenowy]

maybe we need some error info as feedback?