PAXCTL(8)               NetBSD System Manager's Manual               PAXCTL(8)

NAME
     paxctl -- list and modify PaX flags associated with an ELF program

SYNOPSIS
     paxctl flags program ...

DESCRIPTION
     The paxctl utility is used to list and manipulate PaX flags associated
     with an ELF program.

     Each flag can be prefixed either with a ``+'' or a ``-'' sign to add or
     remove the flag, respectively.

     The following flags are available:

     a     Explicitly disable PaX ASLR for program.

     A     Explicitly enable PaX ASLR for program.

     g     Explicitly disable PaX Segvguard for program.

     G     Explicitly enable PaX Segvguard for program.

     m     Explicitly disable PaX MPROTECT (mprotect(2) restrictions) for
           program.

     M     Explicitly enable PaX MPROTECT (mprotect(2) restrictions) for
           program.

     To view existing flags on a file, execute paxctl without any flags.

SEE ALSO
     sysctl(3), options(4), security(8), sysctl(8)

HISTORY
     The paxctl utility first appeared in NetBSD 4.0.

     The paxctl utility is modeled after a tool of the same name available for
     Linux from the PaX project.

AUTHORS
     Elad Efrat <elad@NetBSD.org>
     Christos Zoulas <christos@NetBSD.org>

BUGS
     The paxctl utility currently uses elf(5) ``note'' sections to mark exe-
     cutables as PaX Segvguard enabled.  This will be done using fileassoc(9)
     in the future so that we can control who does the marking and not alter-
     ing the binary file signature.

NetBSD 5.0.1                    August 11, 2008                   NetBSD 5.0.1

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