cregit-Linux how code gets into the kernel

Release 4.18 ipc/compat.c

Directory: ipc
// SPDX-License-Identifier: GPL-2.0
/*
 * 32 bit compatibility code for System V IPC
 *
 * Copyright (C) 1997,1998      Jakub Jelinek (jj@sunsite.mff.cuni.cz)
 * Copyright (C) 1997           David S. Miller (davem@caip.rutgers.edu)
 * Copyright (C) 1999           Arun Sharma <arun.sharma@intel.com>
 * Copyright (C) 2000           VA Linux Co
 * Copyright (C) 2000           Don Dugger <n0ano@valinux.com>
 * Copyright (C) 2000           Hewlett-Packard Co.
 * Copyright (C) 2000           David Mosberger-Tang <davidm@hpl.hp.com>
 * Copyright (C) 2000           Gerhard Tonn (ton@de.ibm.com)
 * Copyright (C) 2000-2002      Andi Kleen, SuSE Labs (x86-64 port)
 * Copyright (C) 2000           Silicon Graphics, Inc.
 * Copyright (C) 2001           IBM
 * Copyright (C) 2004           IBM Deutschland Entwicklung GmbH, IBM Corporation
 * Copyright (C) 2004           Arnd Bergmann (arnd@arndb.de)
 *
 * This code is collected from the versions for sparc64, mips64, s390x, ia64,
 * ppc64 and x86_64, all of which are based on the original sparc64 version
 * by Jakub Jelinek.
 *
 */
#include <linux/compat.h>
#include <linux/errno.h>
#include <linux/highuid.h>
#include <linux/init.h>
#include <linux/msg.h>
#include <linux/shm.h>
#include <linux/syscalls.h>
#include <linux/ptrace.h>

#include <linux/mutex.h>
#include <linux/uaccess.h>

#include "util.h"


int get_compat_ipc64_perm(struct ipc64_perm *to, struct compat_ipc64_perm __user *from) { struct compat_ipc64_perm v; if (copy_from_user(&v, from, sizeof(v))) return -EFAULT; to->uid = v.uid; to->gid = v.gid; to->mode = v.mode; return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Andrew Morton3654.55%133.33%
Al Viro3045.45%266.67%
Total66100.00%3100.00%


int get_compat_ipc_perm(struct ipc64_perm *to, struct compat_ipc_perm __user *from) { struct compat_ipc_perm v; if (copy_from_user(&v, from, sizeof(v))) return -EFAULT; to->uid = v.uid; to->gid = v.gid; to->mode = v.mode; return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Al Viro5989.39%266.67%
Andrew Morton710.61%133.33%
Total66100.00%3100.00%


void to_compat_ipc64_perm(struct compat_ipc64_perm *to, struct ipc64_perm *from) { to->key = from->key; to->uid = from->uid; to->gid = from->gid; to->cuid = from->cuid; to->cgid = from->cgid; to->mode = from->mode; to->seq = from->seq; }

Contributors

PersonTokensPropCommitsCommitProp
Al Viro6794.37%150.00%
Andrew Morton45.63%150.00%
Total71100.00%2100.00%


void to_compat_ipc_perm(struct compat_ipc_perm *to, struct ipc64_perm *from) { to->key = from->key; SET_UID(to->uid, from->uid); SET_GID(to->gid, from->gid); SET_UID(to->cuid, from->cuid); SET_GID(to->cgid, from->cgid); to->mode = from->mode; to->seq = from->seq; }

Contributors

PersonTokensPropCommitsCommitProp
Al Viro7084.34%266.67%
Andrew Morton1315.66%133.33%
Total83100.00%3100.00%


Overall Contributors

PersonTokensPropCommitsCommitProp
Al Viro22670.40%337.50%
Andrew Morton8927.73%112.50%
Chris Metcalf30.93%112.50%
Paul McQuade10.31%112.50%
Ingo Molnar10.31%112.50%
Greg Kroah-Hartman10.31%112.50%
Total321100.00%8100.00%
Directory: ipc
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