diff options
Diffstat (limited to 'drivers/android/binder_alloc.c')
-rw-r--r-- | drivers/android/binder_alloc.c | 55 |
1 files changed, 24 insertions, 31 deletions
diff --git a/drivers/android/binder_alloc.c b/drivers/android/binder_alloc.c index bb929eb87116..6d79a1b0d446 100644 --- a/drivers/android/binder_alloc.c +++ b/drivers/android/binder_alloc.c @@ -1,18 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0-only /* binder_alloc.c * * Android IPC Subsystem * * Copyright (C) 2007-2017 Google, Inc. - * - * This software is licensed under the terms of the GNU General Public - * License version 2, as published by the Free Software Foundation, and - * may be copied, distributed, and modified under those terms. - * - * This program 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 General Public License for more details. - * */ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt @@ -1128,15 +1119,16 @@ binder_alloc_copy_user_to_buffer(struct binder_alloc *alloc, return 0; } -static void binder_alloc_do_buffer_copy(struct binder_alloc *alloc, - bool to_buffer, - struct binder_buffer *buffer, - binder_size_t buffer_offset, - void *ptr, - size_t bytes) +static int binder_alloc_do_buffer_copy(struct binder_alloc *alloc, + bool to_buffer, + struct binder_buffer *buffer, + binder_size_t buffer_offset, + void *ptr, + size_t bytes) { /* All copies must be 32-bit aligned and 32-bit size */ - BUG_ON(!check_buffer(alloc, buffer, buffer_offset, bytes)); + if (!check_buffer(alloc, buffer, buffer_offset, bytes)) + return -EINVAL; while (bytes) { unsigned long size; @@ -1164,25 +1156,26 @@ static void binder_alloc_do_buffer_copy(struct binder_alloc *alloc, ptr = ptr + size; buffer_offset += size; } + return 0; } -void binder_alloc_copy_to_buffer(struct binder_alloc *alloc, - struct binder_buffer *buffer, - binder_size_t buffer_offset, - void *src, - size_t bytes) +int binder_alloc_copy_to_buffer(struct binder_alloc *alloc, + struct binder_buffer *buffer, + binder_size_t buffer_offset, + void *src, + size_t bytes) { - binder_alloc_do_buffer_copy(alloc, true, buffer, buffer_offset, - src, bytes); + return binder_alloc_do_buffer_copy(alloc, true, buffer, buffer_offset, + src, bytes); } -void binder_alloc_copy_from_buffer(struct binder_alloc *alloc, - void *dest, - struct binder_buffer *buffer, - binder_size_t buffer_offset, - size_t bytes) +int binder_alloc_copy_from_buffer(struct binder_alloc *alloc, + void *dest, + struct binder_buffer *buffer, + binder_size_t buffer_offset, + size_t bytes) { - binder_alloc_do_buffer_copy(alloc, false, buffer, buffer_offset, - dest, bytes); + return binder_alloc_do_buffer_copy(alloc, false, buffer, buffer_offset, + dest, bytes); } |