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14 * in the LICENSE file that accompanied this code).
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21 * CA 95054 USA or visit www.sun.com if you need additional information or
27 * Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
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37 #define DEBUG_SUBSYSTEM S_LNET
39 #include <libcfs/libcfs.h>
41 #define LNET_MINOR 240
43 int libcfs_ioctl_data_adjust(struct libcfs_ioctl_data *data)
47 if (libcfs_ioctl_is_invalid(data)) {
48 CERROR("libcfs ioctl: parameter not correctly formatted\n");
52 if (data->ioc_inllen1 != 0)
53 data->ioc_inlbuf1 = &data->ioc_bulk[0];
55 if (data->ioc_inllen2 != 0)
56 data->ioc_inlbuf2 = &data->ioc_bulk[0] +
57 cfs_size_round(data->ioc_inllen1);
62 int libcfs_ioctl_getdata(struct libcfs_ioctl_hdr **hdr_pp,
63 struct libcfs_ioctl_hdr __user *uhdr)
65 struct libcfs_ioctl_hdr hdr;
69 if (copy_from_user(&hdr, uhdr, sizeof(hdr)))
72 if (hdr.ioc_version != LIBCFS_IOCTL_VERSION &&
73 hdr.ioc_version != LIBCFS_IOCTL_VERSION2) {
74 CERROR("libcfs ioctl: version mismatch expected %#x, got %#x\n",
75 LIBCFS_IOCTL_VERSION, hdr.ioc_version);
79 if (hdr.ioc_len < sizeof(struct libcfs_ioctl_hdr)) {
80 CERROR("libcfs ioctl: user buffer too small for ioctl\n");
84 if (hdr.ioc_len > LIBCFS_IOC_DATA_MAX) {
85 CERROR("libcfs ioctl: user buffer is too large %d/%d\n",
86 hdr.ioc_len, LIBCFS_IOC_DATA_MAX);
90 LIBCFS_ALLOC(*hdr_pp, hdr.ioc_len);
94 if (copy_from_user(*hdr_pp, uhdr, hdr.ioc_len))
95 GOTO(failed, err = -EFAULT);
99 LIBCFS_FREE(*hdr_pp, hdr.ioc_len);
104 libcfs_psdev_open(struct inode * inode, struct file * file)
109 try_module_get(THIS_MODULE);
113 /* called when closing /dev/device */
115 libcfs_psdev_release(struct inode * inode, struct file * file)
120 module_put(THIS_MODULE);
125 libcfs_psdev_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
127 if (!capable(CAP_SYS_ADMIN))
130 if (_IOC_TYPE(cmd) != IOC_LIBCFS_TYPE ||
131 _IOC_NR(cmd) < IOC_LIBCFS_MIN_NR ||
132 _IOC_NR(cmd) > IOC_LIBCFS_MAX_NR) {
133 CDEBUG(D_IOCTL, "invalid ioctl ( type %d, nr %d, size %d )\n",
134 _IOC_TYPE(cmd), _IOC_NR(cmd), _IOC_SIZE(cmd));
138 return libcfs_ioctl(cmd, (void __user *)arg);
141 static struct file_operations libcfs_fops = {
142 .unlocked_ioctl = libcfs_psdev_ioctl,
143 .open = libcfs_psdev_open,
144 .release = libcfs_psdev_release
147 struct miscdevice libcfs_dev = {