1 #include <u.h>
2 #include <sys/socket.h>
3 #include <sys/mount.h>
4 #include <linux/version.h>
5 #if LINUX_VERSION_CODE < 0x020600
6 #	define __KERNEL__
7 #	include <linux/nfs.h>
8 #	undef __KERNEL__
9 #else
10 #	include <linux/nfs.h>
11 #endif
12 #include <linux/nfs2.h>
13 #include <linux/nfs_mount.h>
14 #include <libc.h>
15 #include "mountnfs.h"
16 
17 void
18 mountnfs(int proto, struct sockaddr_in *sa, uchar *handle, int nhandle, char *mtpt)
19 {
20 	int mflag, fd;
21 	struct nfs_mount_data nfs;
22 
23 	fd = socket(AF_INET, proto, proto==SOCK_STREAM ? IPPROTO_TCP : IPPROTO_UDP);
24 	if(fd < 0)
25 		sysfatal("socket: %r");
26 
27 	memset(&nfs, 0, sizeof nfs);
28 	nfs.version = NFS_MOUNT_VERSION;
29 	nfs.fd = fd;
30 	nfs.flags =
31 		NFS_MOUNT_SOFT|
32 		NFS_MOUNT_INTR|
33 		NFS_MOUNT_NOAC|
34 		NFS_MOUNT_NOCTO|
35 		NFS_MOUNT_VER3|
36 		NFS_MOUNT_NONLM;
37 	if(proto==SOCK_STREAM)
38 		nfs.flags |= NFS_MOUNT_TCP;
39 	nfs.rsize = 8192;
40 	nfs.wsize = 8192;
41 	nfs.timeo = 120;
42 	nfs.retrans = 2;
43 	nfs.acregmin = 60;
44 	nfs.acregmax = 600;
45 	nfs.acdirmin = 60;
46 	nfs.acdirmax = 600;
47 	nfs.addr = *sa;
48 	strcpy(nfs.hostname, "backup");
49 	nfs.namlen = 1024;
50 	nfs.bsize = 8192;
51 	memcpy(nfs.root.data, handle, nhandle);
52 	nfs.root.size = nhandle;
53 	mflag = MS_NOATIME|MS_NODEV|MS_NODIRATIME|
54 		MS_NOEXEC|MS_NOSUID|MS_RDONLY;
55 
56 	if(mount("backup:/", mtpt, "nfs", mflag, &nfs) < 0)
57 		sysfatal("mount: %r");
58 }