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/*
* Copyright (C) 2000-2006 Erik Andersen <andersen@uclibc.org>
*
* Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
*/
#include <unistd.h>
#include <errno.h>
/* libc_hidden_proto(brk) */
/* Defined in brk.c. */
extern void *__curbrk attribute_hidden;
/* Extend the process's data space by INCREMENT.
If INCREMENT is negative, shrink data space by - INCREMENT.
Return start of new space allocated, or -1 for errors. */
/* libc_hidden_proto(sbrk) */
void * sbrk (intptr_t increment)
{
void *oldbrk;
if (__curbrk == NULL)
if (brk (NULL) < 0) /* Initialize the break. */
return (void *) -1;
if (increment == 0)
return __curbrk;
oldbrk = __curbrk;
if (brk (oldbrk + increment) < 0)
return (void *) -1;
return oldbrk;
}
libc_hidden_def(sbrk)
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