projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| d115c0d8 | 1 | /* brk system call for Linux/am33. |
| d4697bc9 | 2 | Copyright (C) 1995-2014 Free Software Foundation, Inc. |
| d115c0d8 AO |
3 | This file is part of the GNU C Library. |
| 4 | Contributed by Alexandre Oliva <aoliva@redhat.com>. | |
| 5 | Based on ../i386/brk.c. | |
| 6 | ||
| 7 | The GNU C Library is free software; you can redistribute it and/or | |
| 8 | modify it under the terms of the GNU Library General Public License as | |
| 9 | published by the Free Software Foundation; either version 2 of the | |
| 10 | License, or (at your option) any later version. | |
| 11 | ||
| 12 | The GNU C Library is distributed in the hope that it will be useful, | |
| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 15 | Library General Public License for more details. | |
| 16 | ||
| 17 | You should have received a copy of the GNU Library General Public | |
| ab84e3ff PE |
18 | License along with the GNU C Library. If not, see |
| 19 | <http://www.gnu.org/licenses/>. */ | |
| d115c0d8 AO |
20 | |
| 21 | #include <errno.h> | |
| 22 | #include <unistd.h> | |
| 23 | #include <sysdep.h> | |
| 24 | ||
| 25 | /* This must be initialized data because commons can't have aliases. */ | |
| 26 | void *__curbrk = 0; | |
| 27 | ||
| 28 | int | |
| 29 | __brk (void *addr) | |
| 30 | { | |
| 31 | void *newbrk; | |
| 32 | ||
| 70d9946a | 33 | newbrk = INLINE_SYSCALL (brk, 1, addr); |
| d115c0d8 AO |
34 | |
| 35 | __curbrk = newbrk; | |
| 36 | ||
| 37 | if (newbrk < addr) | |
| 38 | { | |
| 39 | __set_errno (ENOMEM); | |
| 40 | return -1; | |
| 41 | } | |
| 42 | ||
| 43 | return 0; | |
| 44 | } | |
| 45 | weak_alias (__brk, brk) |