| yuezonghe | 824eb0c | 2024-06-27 02:32:26 -0700 | [diff] [blame^] | 1 | /* From libc-5.3.12 */ |
| 2 | /* |
| 3 | * Copyright (C) 2000-2006 Erik Andersen <andersen@uclibc.org> |
| 4 | * |
| 5 | * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. |
| 6 | */ |
| 7 | |
| 8 | #include <errno.h> |
| 9 | #include <unistd.h> |
| 10 | #include <sys/syscall.h> |
| 11 | |
| 12 | extern void * __curbrk attribute_hidden; |
| 13 | extern int __init_brk (void) attribute_hidden; |
| 14 | extern void *_brk(void *ptr) attribute_hidden; |
| 15 | |
| 16 | int brk(void * end_data_seg) |
| 17 | { |
| 18 | if (__init_brk () == 0) |
| 19 | { |
| 20 | __curbrk = _brk(end_data_seg); |
| 21 | if (__curbrk == end_data_seg) |
| 22 | return 0; |
| 23 | __set_errno(ENOMEM); |
| 24 | } |
| 25 | return -1; |
| 26 | } |
| 27 | libc_hidden_def(brk) |