+static ssize_t
+lprocfs_sptlrpc_sepol_seq_write(struct file *file, const char __user *buffer,
+ size_t count, void *data)
+{
+ struct seq_file *seq = file->private_data;
+ struct obd_device *dev = seq->private;
+ struct client_obd *cli = &dev->u.cli;
+ struct obd_import *imp = cli->cl_import;
+ struct sepol_downcall_data *param;
+ int size = sizeof(*param);
+ int rc = 0;
+
+ if (count < size) {
+ CERROR("%s: invalid data count = %lu, size = %d\n",
+ dev->obd_name, (unsigned long) count, size);
+ return -EINVAL;
+ }
+
+ OBD_ALLOC(param, size);
+ if (param == NULL)
+ return -ENOMEM;
+
+ if (copy_from_user(param, buffer, size)) {
+ CERROR("%s: bad sepol data\n", dev->obd_name);
+ GOTO(out, rc = -EFAULT);
+ }
+
+ if (param->sdd_magic != SEPOL_DOWNCALL_MAGIC) {
+ CERROR("%s: sepol downcall bad params\n",
+ dev->obd_name);
+ GOTO(out, rc = -EINVAL);
+ }
+
+ if (param->sdd_sepol_len == 0 ||
+ param->sdd_sepol_len >= sizeof(imp->imp_sec->ps_sepol)) {
+ CERROR("%s: invalid sepol data returned\n",
+ dev->obd_name);
+ GOTO(out, rc = -EINVAL);
+ }
+ rc = param->sdd_sepol_len; /* save sdd_sepol_len */
+ OBD_FREE(param, size);
+ size = offsetof(struct sepol_downcall_data,
+ sdd_sepol[rc]);
+
+ /* alloc again with real size */
+ rc = 0;
+ OBD_ALLOC(param, size);
+ if (param == NULL)
+ return -ENOMEM;
+
+ if (copy_from_user(param, buffer, size)) {
+ CERROR("%s: bad sepol data\n", dev->obd_name);
+ GOTO(out, rc = -EFAULT);
+ }
+
+ spin_lock(&imp->imp_sec->ps_lock);
+ snprintf(imp->imp_sec->ps_sepol, param->sdd_sepol_len + 1, "%s",
+ param->sdd_sepol);
+ imp->imp_sec->ps_sepol_mtime = param->sdd_sepol_mtime;
+ spin_unlock(&imp->imp_sec->ps_lock);
+
+out:
+ if (param != NULL)
+ OBD_FREE(param, size);
+
+ return rc ? rc : count;
+}
+LPROC_SEQ_FOPS_WR_ONLY(srpc, sptlrpc_sepol);
+