1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
6 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 only,
10 * as published by the Free Software Foundation.
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License version 2 for more details (a copy is included
16 * in the LICENSE file that accompanied this code).
18 * You should have received a copy of the GNU General Public License
19 * version 2 along with this program; If not, see
20 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
22 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
23 * CA 95054 USA or visit www.sun.com if you need additional information or
29 * Copyright 2008 Sun Microsystems, Inc. All rights reserved
30 * Use is subject to license terms.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
37 #define DEBUG_SUBSYSTEM S_LNET
39 #include <libcfs/libcfs.h>
40 #include <libcfs/kp30.h>
42 #define LNET_MINOR 240
44 int libcfs_ioctl_getdata(char *buf, char *end, void *arg)
46 struct libcfs_ioctl_hdr *hdr;
47 struct libcfs_ioctl_data *data;
51 hdr = (struct libcfs_ioctl_hdr *)buf;
52 data = (struct libcfs_ioctl_data *)buf;
54 err = copy_from_user(buf, (void *)arg, sizeof(*hdr));
58 if (hdr->ioc_version != LIBCFS_IOCTL_VERSION) {
59 CERROR("PORTALS: version mismatch kernel vs application\n");
63 if (hdr->ioc_len + buf >= end) {
64 CERROR("PORTALS: user buffer exceeds kernel buffer\n");
69 if (hdr->ioc_len < sizeof(struct libcfs_ioctl_data)) {
70 CERROR("PORTALS: user buffer too small for ioctl\n");
74 err = copy_from_user(buf, (void *)arg, hdr->ioc_len);
78 if (libcfs_ioctl_is_invalid(data)) {
79 CERROR("PORTALS: ioctl not correctly formatted\n");
83 if (data->ioc_inllen1)
84 data->ioc_inlbuf1 = &data->ioc_bulk[0];
86 if (data->ioc_inllen2)
87 data->ioc_inlbuf2 = &data->ioc_bulk[0] +
88 size_round(data->ioc_inllen1);
93 int libcfs_ioctl_popdata(void *arg, void *data, int size)
95 if (copy_to_user((char *)arg, data, size))
100 extern struct cfs_psdev_ops libcfs_psdev_ops;
103 libcfs_psdev_open(struct inode * inode, struct file * file)
105 struct libcfs_device_userstate **pdu = NULL;
110 pdu = (struct libcfs_device_userstate **)&file->private_data;
111 if (libcfs_psdev_ops.p_open != NULL)
112 rc = libcfs_psdev_ops.p_open(0, (void *)pdu);
118 /* called when closing /dev/device */
120 libcfs_psdev_release(struct inode * inode, struct file * file)
122 struct libcfs_device_userstate *pdu;
127 pdu = file->private_data;
128 if (libcfs_psdev_ops.p_close != NULL)
129 rc = libcfs_psdev_ops.p_close(0, (void *)pdu);
136 libcfs_ioctl(struct inode *inode, struct file *file,
137 unsigned int cmd, unsigned long arg)
139 struct cfs_psdev_file pfile;
142 if (current_fsuid() != 0)
145 if ( _IOC_TYPE(cmd) != IOC_LIBCFS_TYPE ||
146 _IOC_NR(cmd) < IOC_LIBCFS_MIN_NR ||
147 _IOC_NR(cmd) > IOC_LIBCFS_MAX_NR ) {
148 CDEBUG(D_IOCTL, "invalid ioctl ( type %d, nr %d, size %d )\n",
149 _IOC_TYPE(cmd), _IOC_NR(cmd), _IOC_SIZE(cmd));
153 /* Handle platform-dependent IOC requests */
155 case IOC_LIBCFS_PANIC:
156 if (!cfs_capable(CFS_CAP_SYS_BOOT))
158 panic("debugctl-invoked panic");
160 case IOC_LIBCFS_MEMHOG:
161 if (!cfs_capable(CFS_CAP_SYS_ADMIN))
167 pfile.private_data = file->private_data;
168 if (libcfs_psdev_ops.p_ioctl != NULL)
169 rc = libcfs_psdev_ops.p_ioctl(&pfile, cmd, (void *)arg);
175 static struct file_operations libcfs_fops = {
177 open: libcfs_psdev_open,
178 release: libcfs_psdev_release
181 cfs_psdev_t libcfs_dev = {