NAME

       personality - set the process execution domain

SYNOPSIS

       #include <sys/personality.h>

       int personality(unsigned long persona);

DESCRIPTION

       Linux  supports  different  execution  domains, or personalities, for each process.  Among
       other things, execution domains tell Linux how to map signal numbers into signal  actions.
       The  execution domain system allows Linux to provide limited support for binaries compiled
       under other UNIX-like operating systems.

       If persona is not 0xffffffff, then personality() sets the caller's execution domain to the
       value specified by persona.  Specifying persona as 0xffffffff provides a way of retrieving
       the current persona without changing it.

       A list of the available execution domains can be found in <sys/personality.h>.

RETURN VALUE

       On success, the previous persona is returned.  On error, -1 is returned, and errno is  set
       appropriately.

ERRORS

       EINVAL The kernel was unable to change the personality.

VERSIONS

       This system call first appeared in Linux 1.1.20; library support was added in glibc 2.3.

CONFORMING TO

       personality()  is  Linux-specific  and  should  not  be  used  in  programs intended to be
       portable.

SEE ALSO

       setarch(8)

COLOPHON

       This page is part of release 4.04 of the Linux man-pages project.  A  description  of  the
       project,  information  about  reporting  bugs, and the latest version of this page, can be
       found at http://www.kernel.org/doc/man-pages/.