From 004aa293f360ea0f63ec50f5042f8c0fb2831e4f Mon Sep 17 00:00:00 2001
From: rsc <devnull@localhost>
Date: Wed, 13 Jul 2005 03:49:41 +0000
Subject: Dump-like file system backup for Unix, built on Venti.

---
 src/cmd/vbackup/mount-Linux.c | 58 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 58 insertions(+)
 create mode 100644 src/cmd/vbackup/mount-Linux.c

(limited to 'src/cmd/vbackup/mount-Linux.c')

diff --git a/src/cmd/vbackup/mount-Linux.c b/src/cmd/vbackup/mount-Linux.c
new file mode 100644
index 00000000..39b96a31
--- /dev/null
+++ b/src/cmd/vbackup/mount-Linux.c
@@ -0,0 +1,58 @@
+#include <u.h>
+#include <sys/socket.h>
+#include <sys/mount.h>
+#ifdef __Linux24__
+#	define __KERNEL__
+#	include <linux/nfs.h>
+#	undef __KERNEL__
+#else
+#	include <linux/nfs.h>
+#endif
+#include <linux/nfs2.h>
+#include <linux/nfs_mount.h>
+#include <libc.h>
+#include "mountnfs.h"
+
+void
+mountnfs(int proto, struct sockaddr_in *sa, uchar *handle, int nhandle, char *mtpt)
+{
+	int mflag, fd;
+	struct nfs_mount_data nfs;
+
+	fd = socket(AF_INET, proto, proto==SOCK_STREAM ? IPPROTO_TCP : IPPROTO_UDP);
+	if(fd < 0)
+		sysfatal("socket: %r");
+
+	memset(&nfs, 0, sizeof nfs);
+	nfs.version = NFS_MOUNT_VERSION;
+	nfs.fd = fd;
+	nfs.flags =
+		NFS_MOUNT_SOFT|
+		NFS_MOUNT_INTR|
+		NFS_MOUNT_NOAC|
+		NFS_MOUNT_NOCTO|
+		NFS_MOUNT_VER3|
+		NFS_MOUNT_NONLM;
+	if(proto==SOCK_STREAM)
+		nfs.flags |= NFS_MOUNT_TCP;
+	nfs.rsize = 8192;
+	nfs.wsize = 8192;
+	nfs.timeo = 120;
+	nfs.retrans = 2;
+	nfs.acregmin = 60;
+	nfs.acregmax = 600;
+	nfs.acdirmin = 60;
+	nfs.acdirmax = 600;
+	nfs.addr = *sa;
+	strcpy(nfs.hostname, "backup");
+	nfs.namlen = 1024;
+	nfs.bsize = 8192;
+	memcpy(nfs.root.data, handle, nhandle);
+	nfs.root.size = nhandle;
+	mflag = MS_NOATIME|MS_NODEV|MS_NODIRATIME|
+		MS_NOEXEC|MS_NOSUID|MS_RDONLY;
+
+	if(mount("backup:/", mtpt, "nfs", mflag, &nfs) < 0)
+		sysfatal("mount: %r");
+}
+
-- 
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