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