glibc/sysdeps/unix/sysv/linux/x86_64/brk.c
Roland McGrath 016080606c * sysdeps/unix/sysv/linux/powerpc/powerpc64/umount.c: Include x86_64
umount.c rather than hppa umount.c.
	* sysdeps/unix/sysv/linux/sparc/sparc32/chown.c: Include sh chown.c
	rather than m68k chown.c.
	* sysdeps/unix/sysv/linux/sparc/sparc32/fchownat.c: Include sh
	fchownat.c rather than m68k fchownat.c.
	* sysdeps/unix/sysv/linux/sh/chown.c: Copy over from m68k chown.c.
	* sysdeps/unix/sysv/linux/sh/fchownat.c: Copy over from m68k
	fchownat.c.
	* sysdeps/unix/sysv/linux/x86_64/brk.c: Copy over from hppa brk.c.
	* sysdeps/unix/sysv/linux/x86_64/umount.c: Copy over from hppa
	umount.c.
2006-02-28 19:07:44 +00:00

43 lines
1.3 KiB
C

/* brk system call for Linux/x86_64.
Copyright (C) 1995, 1996, 2000, 2001, 2006 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, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#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)