man2/personality.2

   1 .\" Copyright (C) 1995, Thomas K. Dyas <tdyas@eden.rutgers.edu>
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  25 .\" Created   Sat Aug 21 1995     Thomas K. Dyas <tdyas@eden.rutgers.edu>
  26 .\"
  27 .\" typo corrected, aeb, 950825
  28 .\" added layout change from joey, 960722
  29 .\" changed prototype, documented 0xffffffff, aeb, 030101
  30 .\" Modified 2004-11-03 patch from Martin Schulze <joey@infodrom.org>
  31 .\"
  32 .TH PERSONALITY 2 2003-01-01 "Linux" "Linux Programmer's Manual"
  33 .SH NAME
  34 personality \- set the process execution domain
  35 .SH SYNOPSIS
  36 .B #include <sys/personality.h>
  37 .sp
  38 .BI "int personality(unsigned long " persona );
  39 .SH DESCRIPTION
  40 Linux supports different execution domains, or personalities, for each
  41 process.
  42 Among other things, execution domains tell Linux how to map
  43 signal numbers into signal actions.
  44 The execution domain system allows
  45 Linux to provide limited support for binaries compiled under other
  46 UNIX-like operating systems.
  47
  48 This function will return the current personality when
  49 .I persona
  50 equals 0xffffffff.
  51 Otherwise, it will make the execution domain
  52 referenced by
  53 .I persona
  54 the new execution domain of the calling process.
  55 .SH RETURN VALUE
  56 On success, the previous
  57 .I persona
  58 is returned.
  59 On error, \-1 is returned, and
  60 .I errno
  61 is set appropriately.
  62 .SH ERRORS
  63 .TP
  64 .B EINVAL
  65 The kernel was unable to change the personality.
  66 .SH CONFORMING TO
  67 .BR personality ()
  68 is Linux-specific and should not be used in programs intended to
  69 be portable.