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36 #define DEBUG_SUBSYSTEM S_LNET
38 #include <libcfs/libcfs.h>
40 #define LIBCFS_MINOR 240
42 int libcfs_ioctl_getdata(char *buf, char *end, void *arg)
44 struct libcfs_ioctl_hdr *hdr;
45 struct libcfs_ioctl_data *data;
49 hdr = (struct libcfs_ioctl_hdr *)buf;
50 data = (struct libcfs_ioctl_data *)buf;
52 err = cfs_copy_from_user(buf, (void *)arg, sizeof(*hdr));
56 if (hdr->ioc_version != LIBCFS_IOCTL_VERSION) {
57 CERROR("LIBCFS: version mismatch kernel vs application\n");
61 if (hdr->ioc_len + buf >= end) {
62 CERROR("LIBCFS: user buffer exceeds kernel buffer\n");
66 if (hdr->ioc_len < sizeof(struct libcfs_ioctl_data)) {
67 CERROR("LIBCFS: user buffer too small for ioctl\n");
71 err = cfs_copy_from_user(buf, (void *)arg, hdr->ioc_len);
75 if (libcfs_ioctl_is_invalid(data)) {
76 CERROR("LIBCFS: ioctl not correctly formatted\n");
80 if (data->ioc_inllen1)
81 data->ioc_inlbuf1 = &data->ioc_bulk[0];
83 if (data->ioc_inllen2)
84 data->ioc_inlbuf2 = &data->ioc_bulk[0] +
85 cfs_size_round(data->ioc_inllen1);
90 int libcfs_ioctl_popdata(void *arg, void *data, int size)
92 if (cfs_copy_to_user((char *)arg, data, size))
97 extern struct cfs_psdev_ops libcfs_psdev_ops;
100 libcfs_psdev_open(struct inode *in, cfs_file_t * file)
102 struct libcfs_device_userstate **pdu = NULL;
105 pdu = (struct libcfs_device_userstate **)&file->private_data;
106 if (libcfs_psdev_ops.p_open != NULL)
107 rc = libcfs_psdev_ops.p_open(0, (void *)pdu);
113 /* called when closing /dev/device */
115 libcfs_psdev_release(struct inode *in, cfs_file_t * file)
117 struct libcfss_device_userstate *pdu;
120 pdu = file->private_data;
121 if (libcfs_psdev_ops.p_close != NULL)
122 rc = libcfs_psdev_ops.p_close(0, (void *)pdu);
129 libcfs_ioctl(cfs_file_t * file, unsigned int cmd, ulong_ptr_t arg)
131 struct cfs_psdev_file pfile;
134 if ( _IOC_TYPE(cmd) != IOC_LIBCFS_TYPE ||
135 _IOC_NR(cmd) < IOC_LIBCFS_MIN_NR ||
136 _IOC_NR(cmd) > IOC_LIBCFS_MAX_NR ) {
137 CDEBUG(D_IOCTL, "invalid ioctl ( type %d, nr %d, size %d )\n",
138 _IOC_TYPE(cmd), _IOC_NR(cmd), _IOC_SIZE(cmd));
142 /* Handle platform-dependent IOC requests */
144 case IOC_LIBCFS_PANIC:
145 if (!cfs_capable(CFS_CAP_SYS_BOOT))
147 CERROR("debugctl-invoked panic");
148 KeBugCheckEx('LUFS', (ULONG_PTR)libcfs_ioctl, (ULONG_PTR)NULL, (ULONG_PTR)NULL, (ULONG_PTR)NULL);
151 case IOC_LIBCFS_MEMHOG:
153 if (!cfs_capable(CFS_CAP_SYS_ADMIN))
159 pfile.private_data = file->private_data;
160 if (libcfs_psdev_ops.p_ioctl != NULL)
161 rc = libcfs_psdev_ops.p_ioctl(&pfile, cmd, (void *)arg);
167 static struct file_operations libcfs_fops = {
168 /* owner */ THIS_MODULE,
172 /* ioctl: */ libcfs_ioctl,
173 /* open: */ libcfs_psdev_open,
174 /* release:*/ libcfs_psdev_release
177 cfs_psdev_t libcfs_dev = {