mirror of https://github.com/mkerrisk/man-pages
70 lines
2.4 KiB
Groff
70 lines
2.4 KiB
Groff
.\" Copyright (C) 1995, Thomas K. Dyas <tdyas@eden.rutgers.edu>
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.\"
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.\" Permission is granted to make and distribute verbatim copies of this
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.\" manual provided the copyright notice and this permission notice are
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.\" preserved on all copies.
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.\"
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.\" Permission is granted to copy and distribute modified versions of this
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.\" manual under the conditions for verbatim copying, provided that the
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.\" entire resulting derived work is distributed under the terms of a
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.\" permission notice identical to this one.
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.\"
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.\" Since the Linux kernel and libraries are constantly changing, this
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.\" manual page may be incorrect or out-of-date. The author(s) assume no
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.\" responsibility for errors or omissions, or for damages resulting from
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.\" the use of the information contained herein. The author(s) may not
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.\" have taken the same level of care in the production of this manual,
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.\" which is licensed free of charge, as they might when working
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.\" professionally.
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.\"
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.\" Formatted or processed versions of this manual, if unaccompanied by
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.\" the source, must acknowledge the copyright and authors of this work.
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.\"
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.\" Created Sat Aug 21 1995 Thomas K. Dyas <tdyas@eden.rutgers.edu>
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.\"
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.\" typo corrected, aeb, 950825
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.\" added layout change from joey, 960722
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.\" changed prototype, documented 0xffffffff, aeb, 030101
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.\" Modified 2004-11-03 patch from Martin Schulze <joey@infodrom.org>
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.\"
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.TH PERSONALITY 2 2003-01-01 "Linux 2.0" "Linux Programmer's Manual"
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.SH NAME
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personality \- set the process execution domain
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.SH SYNOPSIS
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.B #include <sys/personality.h>
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.sp
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.BI "int personality(unsigned long " persona );
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.SH DESCRIPTION
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Linux supports different execution domains, or personalities, for each
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process.
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Among other things, execution domains tell Linux how to map
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signal numbers into signal actions.
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The execution domain system allows
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Linux to provide limited support for binaries compiled under other
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Unix-like operating systems.
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This function will return the current
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.BR personality ()
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when
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.I persona
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equals 0xffffffff.
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Otherwise, it will make the execution domain
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referenced by
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.I persona
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the new execution domain of the current process.
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.SH "RETURN VALUE"
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On success, the previous
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.I persona
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is returned.
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On error, \-1 is returned, and
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.I errno
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is set appropriately.
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.SH ERRORS
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.TP
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.B EINVAL
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The kernel was unable to change the personality.
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.SH "CONFORMING TO"
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.BR personality ()
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is Linux specific and should not be used in programs intended to
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be portable.
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