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.\" Hey Emacs! This file is -*- nroff -*- source.
.\"
.\" Copyright (c) 1993 Michael Haardt
.\" (u31b3hs@pool.informatik.rwth-aachen.de),
.\" Fri Apr  2 11:32:09 MET DST 1993
.\"
.\" This is free documentation; you can redistribute it and/or
.\" modify it under the terms of the GNU General Public License as
.\" published by the Free Software Foundation; either version 2 of
.\" the License, or (at your option) any later version.
.\"
.\" The GNU General Public License's references to "object code"
.\" and "executables" are to be interpreted as the output of any
.\" document formatting or typesetting system, including
.\" intermediate and printed output.
.\"
.\" This manual is distributed in the hope that it will be useful,
.\" but WITHOUT ANY WARRANTY; without even the implied warranty of
.\" MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
.\" GNU General Public License for more details.
.\"
.\" You should have received a copy of the GNU General Public
.\" License along with this manual; if not, write to the Free
.\" Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139,
.\" USA.
.\"
.\" Modified Wed Jul 21 19:52:58 1993 by Rik Faith (faith@cs.unc.edu)
.\" Modified Sun Aug 21 17:40:38 1994 by Rik Faith (faith@cs.unc.edu)
.\"
.\" Traduction 9/10/1996 par Christophe Blaess (ccb@club-internet.fr)
.\" Mise a jour 19/07/1997
.TH BRK 2 "19 Juillet 1997" "Linux 0.99.11" "Manuel du programmeur Linux"
.SH NOM
brk, sbrk \- Modifier la taille du segment de donnes.
.SH SYNOPSIS
.B #include <unistd.h>
.sp
.BI "int brk(void *" fin_segment_donne );
.br
.BI "void *sbrk(ptrdiff_t " incrment );
.SH DESCRIPTION
.B brk
positionne la fin du segment de donnes (le premier mot mmoire hors
de la zone accessible)  l'adresse spcifie par
.IR fin_segment_donne.
.I fin_segment_donne
doit tre suprieur  la fin du segment de texte, et doit tre 16 Ko 
avant la fin de la pile.

.B sbrk
incrmente l'espace de donnes du programme de
.I incrment
octets. 
.B sbrk
n'est pas un appel systme, juste une fonction de la bibliothque C.
.SH "VALEUR RENVOYE"
.B brk
renvoie 0 s'il russit.

.B sbrk
retourne un pointeur sur le dbut de la nouvelle zone de donnes. 

En cas d'chec \-1 est renvoy, et
.I errno
contient le code d'erreur
.BR ENOMEM .
.SH "CONFORMIT"   
BSD 4.3

.BR brk " et " sbrk
ne sont pas dfinis dans le C Standard, et sont volontairement exclus
des standards POSIX.1 (paragraphes B.1.1.1.3 et B.8.3.3).
.SH "VOIR AUSSI"
.BR execve "(2), " getrlimit "(2), " malloc (3)

.SH TRADUCTION
Christophe Blaess, 1997.