.\" Copyright (C) 1995, Thomas K. Dyas .\" .\" %%%LICENSE_START(VERBATIM) .\" Permission is granted to make and distribute verbatim copies of this .\" manual provided the copyright notice and this permission notice are .\" preserved on all copies. .\" .\" Permission is granted to copy and distribute modified versions of this .\" manual under the conditions for verbatim copying, provided that the .\" entire resulting derived work is distributed under the terms of a .\" permission notice identical to this one. .\" .\" Since the Linux kernel and libraries are constantly changing, this .\" manual page may be incorrect or out-of-date. The author(s) assume no .\" responsibility for errors or omissions, or for damages resulting from .\" the use of the information contained herein. The author(s) may not .\" have taken the same level of care in the production of this manual, .\" which is licensed free of charge, as they might when working .\" professionally. .\" .\" Formatted or processed versions of this manual, if unaccompanied by .\" the source, must acknowledge the copyright and authors of this work. .\" %%%LICENSE_END .\" .\" Created Sat Aug 21 1995 Thomas K. Dyas .\" .\" typo corrected, aeb, 950825 .\" added layout change from joey, 960722 .\" changed prototype, documented 0xffffffff, aeb, 030101 .\" Modified 2004-11-03 patch from Martin Schulze .\" .TH PERSONALITY 2 2015-02-01 "Linux" "Linux Programmer's Manual" .SH NAME personality \- set the process execution domain .SH SYNOPSIS .B #include .sp .BI "int personality(unsigned long " persona ); .SH 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 .I persona is not 0xffffffff, then .BR personality () sets the caller's execution domain to the value specified by .IR persona . Specifying .IR 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 .IR . .SH RETURN VALUE On success, the previous .I persona is returned. On error, \-1 is returned, and .I errno is set appropriately. .SH ERRORS .TP .B EINVAL The kernel was unable to change the personality. .SH CONFORMING TO .BR personality () is Linux-specific and should not be used in programs intended to be portable. .SH SEE ALSO .BR setarch (8) .SH COLOPHON This page is part of release 3.79 of the Linux .I 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/.