IOPERM(2) - Linux manual page online | System calls

Set port input/output permissions.

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ioperm(2)	referred by	apparmor(7) \| capabilities(7) \| Config::Model::models::Systemd::Section::Service(3pm) \| fork(2) \| ioctl_console(2) \| iopl(2) \| mem(4) \| outb(2) \| syscalls(2) \| systemd.exec(5) \| unimplemented(2)
ioperm(2)	refer to	capabilities(7) \| execve(2) \| fork(2) \| iopl(2) \| outb(2)