patch-1.3.53 linux/fs/ncpfs/ioctl.c

• Lines: 94
• Date: Tue Jan 2 14:18:43 1996
• Orig file: v1.3.52/linux/fs/ncpfs/ioctl.c
• Orig date: Thu Jan 1 02:00:00 1970

diff -u --recursive --new-file v1.3.52/linux/fs/ncpfs/ioctl.c linux/fs/ncpfs/ioctl.c
@@ -0,0 +1,93 @@
+/*
+ *  ioctl.c
+ *
+ *  Copyright (C) 1995 by Volker Lendecke
+ *
+ */
+
+#include <asm/segment.h>
+#include <linux/errno.h>
+#include <linux/fs.h>
+#include <linux/ncp_fs.h>
+#include <linux/ioctl.h>
+#include <linux/sched.h>
+#include <linux/mm.h>
+#include <linux/ncp.h>
+
+int
+ncp_ioctl (struct inode * inode, struct file * filp,
+           unsigned int cmd, unsigned long arg)
+{
+	int result;
+	struct ncp_ioctl_request request;
+	struct ncp_server *server;
+
+	switch(cmd) {
+	case NCP_IOC_NCPREQUEST:
+
+		if (!suser())
+		{
+			return -EPERM;
+		}
+		
+		if ((result = verify_area(VERIFY_READ, (char *)arg,
+					  sizeof(request))) != 0)
+		{
+			return result;
+		}
+
+		memcpy_fromfs(&request, (struct ncp_ioctl_request *)arg,
+			      sizeof(request));
+
+		if (   (request.function > 255)
+		    || (request.size >
+			NCP_PACKET_SIZE - sizeof(struct ncp_request_header)))
+		{
+			return -EINVAL;
+		}
+
+		if ((result = verify_area(VERIFY_WRITE, (char *)request.data,
+					  NCP_PACKET_SIZE)) != 0)
+		{
+			return result;
+		}
+
+		server = NCP_SERVER(inode);
+		ncp_lock_server(server);
+
+		/* FIXME: We hack around in the server's structures
+                   here to be able to use ncp_request */
+
+		server->has_subfunction = 0;
+		server->current_size =
+			request.size + sizeof(struct ncp_request_header);
+		memcpy_fromfs(server->packet, request.data,
+			      request.size+sizeof(struct ncp_request_header));
+
+		
+		ncp_request(server, request.function);
+
+		DPRINTK("ncp_ioctl: copy %d bytes\n",
+			server->reply_size);
+		memcpy_tofs(request.data, server->packet,
+			    server->reply_size);
+
+		ncp_unlock_server(server);
+
+		return server->reply_size;
+
+        case NCP_IOC_GETMOUNTUID:
+                if ((result = verify_area(VERIFY_WRITE, (uid_t*) arg,
+                                          sizeof(uid_t))) != 0)
+		{
+                        return result;
+                }
+                put_fs_word(NCP_SERVER(inode)->m.mounted_uid, (uid_t*) arg);
+                return 0;
+
+	default:
+		return -EINVAL;
+	}
+	
+	return -EINVAL;
+}