proccontrol(1) manual page

The proccontrol command modifies the execution parameter of existing process specified by the pid argument, or starts execution of the new program command with the execution parameter set for it.

Which execution parameter is changed, selected by the mandatory parameter mode. Possible values for mode are:

aslr Control the Address Space Layout Randomization. Only applicable to the new process spawned.

trace Control the permission for debuggers to attach. Note that process is only allowed to enable tracing for itself, not for any other process.

trapcap

Controls the signalling of capability mode access violations.

protmax

Controls the implicit PROT_MAX application for mmap(2).

nonewprivs

Controls disabling the setuid and sgid bits for execve(2).

wxmap Controls the write exclusive execute mode for mappings.

kpti Controls the KPTI enable, AMD64 only.

la48 Control limiting usermode process address space to 48 bits of address, AMD64 only, on machines capable of 57-bit addressing.

The control specifies if the selected mode should be enabled or disabled. Possible values are enable and disable, with the default value being enable if not specified. See procctl(2) for detailed description of each mode effects and interaction with other process control facilities.

The -q switch makes the utility query and print the current setting for the selected mode. The -q requires the query target process specification with -p.

To disable debuggers attachment to the process 1020, execute

proccontrol -m trace -s disable -p 1020

To execute the uniq(1) program in a mode where capability access violations cause SIGTRAP delivery, do
proccontrol -m trapcap uniq
To query the current ASLR enablement mode for the running process 1020, do
proccontrol -m aslr -q -p 1020

Manual Pages — PROCCONTROL

NAME

CONTENTS

SYNOPSIS

DESCRIPTION

EXIT STATUS

EXAMPLES

SEE ALSO

HISTORY

AUTHORS

aslr	Control the Address Space Layout Randomization. Only applicable to the new process spawned.
trace	Control the permission for debuggers to attach. Note that process is only allowed to enable tracing for itself, not for any other process.
trapcap
	Controls the signalling of capability mode access violations.
protmax
	Controls the implicit PROT_MAX application for mmap(2).
nonewprivs
	Controls disabling the setuid and sgid bits for execve(2).
wxmap	Controls the write exclusive execute mode for mappings.
kpti	Controls the KPTI enable, AMD64 only.
la48	Control limiting usermode process address space to 48 bits of address, AMD64 only, on machines capable of 57-bit addressing.