mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-14 09:01:07 +00:00
42 lines
1.2 KiB
C
42 lines
1.2 KiB
C
/* brk system call for Linux/x86_64.
|
|
Copyright (C) 1995-2014 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
The GNU C Library 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
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, see
|
|
<http://www.gnu.org/licenses/>. */
|
|
|
|
#include <errno.h>
|
|
#include <unistd.h>
|
|
#include <sysdep.h>
|
|
|
|
/* This must be initialized data because commons can't have aliases. */
|
|
void *__curbrk = 0;
|
|
|
|
int
|
|
__brk (void *addr)
|
|
{
|
|
void *newbrk;
|
|
|
|
__curbrk = newbrk = (void *) INLINE_SYSCALL (brk, 1, addr);
|
|
|
|
if (newbrk < addr)
|
|
{
|
|
__set_errno (ENOMEM);
|
|
return -1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
weak_alias (__brk, brk)
|