1 | // SPDX-License-Identifier: GPL-2.0 |
2 | /* |
3 | * 32 bit compatibility code for System V IPC |
4 | * |
5 | * Copyright (C) 1997,1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz) |
6 | * Copyright (C) 1997 David S. Miller (davem@caip.rutgers.edu) |
7 | * Copyright (C) 1999 Arun Sharma <arun.sharma@intel.com> |
8 | * Copyright (C) 2000 VA Linux Co |
9 | * Copyright (C) 2000 Don Dugger <n0ano@valinux.com> |
10 | * Copyright (C) 2000 Hewlett-Packard Co. |
11 | * Copyright (C) 2000 David Mosberger-Tang <davidm@hpl.hp.com> |
12 | * Copyright (C) 2000 Gerhard Tonn (ton@de.ibm.com) |
13 | * Copyright (C) 2000-2002 Andi Kleen, SuSE Labs (x86-64 port) |
14 | * Copyright (C) 2000 Silicon Graphics, Inc. |
15 | * Copyright (C) 2001 IBM |
16 | * Copyright (C) 2004 IBM Deutschland Entwicklung GmbH, IBM Corporation |
17 | * Copyright (C) 2004 Arnd Bergmann (arnd@arndb.de) |
18 | * |
19 | * This code is collected from the versions for sparc64, mips64, s390x, ia64, |
20 | * ppc64 and x86_64, all of which are based on the original sparc64 version |
21 | * by Jakub Jelinek. |
22 | * |
23 | */ |
24 | #include <linux/compat.h> |
25 | #include <linux/errno.h> |
26 | #include <linux/highuid.h> |
27 | #include <linux/init.h> |
28 | #include <linux/msg.h> |
29 | #include <linux/shm.h> |
30 | #include <linux/syscalls.h> |
31 | #include <linux/ptrace.h> |
32 | |
33 | #include <linux/mutex.h> |
34 | #include <linux/uaccess.h> |
35 | |
36 | #include "util.h" |
37 | |
38 | int get_compat_ipc64_perm(struct ipc64_perm *to, |
39 | struct compat_ipc64_perm __user *from) |
40 | { |
41 | struct compat_ipc64_perm v; |
42 | if (copy_from_user(to: &v, from, n: sizeof(v))) |
43 | return -EFAULT; |
44 | to->uid = v.uid; |
45 | to->gid = v.gid; |
46 | to->mode = v.mode; |
47 | return 0; |
48 | } |
49 | |
50 | int get_compat_ipc_perm(struct ipc64_perm *to, |
51 | struct compat_ipc_perm __user *from) |
52 | { |
53 | struct compat_ipc_perm v; |
54 | if (copy_from_user(to: &v, from, n: sizeof(v))) |
55 | return -EFAULT; |
56 | to->uid = v.uid; |
57 | to->gid = v.gid; |
58 | to->mode = v.mode; |
59 | return 0; |
60 | } |
61 | |
62 | void to_compat_ipc64_perm(struct compat_ipc64_perm *to, struct ipc64_perm *from) |
63 | { |
64 | to->key = from->key; |
65 | to->uid = from->uid; |
66 | to->gid = from->gid; |
67 | to->cuid = from->cuid; |
68 | to->cgid = from->cgid; |
69 | to->mode = from->mode; |
70 | to->seq = from->seq; |
71 | } |
72 | |
73 | void to_compat_ipc_perm(struct compat_ipc_perm *to, struct ipc64_perm *from) |
74 | { |
75 | to->key = from->key; |
76 | SET_UID(to->uid, from->uid); |
77 | SET_GID(to->gid, from->gid); |
78 | SET_UID(to->cuid, from->cuid); |
79 | SET_GID(to->cgid, from->cgid); |
80 | to->mode = from->mode; |
81 | to->seq = from->seq; |
82 | } |
83 | |