Dump-like file system backup for Unix, built on Venti.

src/cmd/vbackup/disknfs.c

@@ -0,0 +1,126 @@
+#include <u.h>
+#include <libc.h>
+#include <ip.h>
+#include <thread.h>
+#include <sunrpc.h>
+#include <nfs3.h>
+#include <diskfs.h>
+#include "nfs3srv.h"
+
+Disk *disk;
+Fsys *fsys;
+
+void
+usage(void)
+{
+	fprint(2, "usage: disknfs [-RTr] disk\n");
+	threadexitsall("usage");
+}
+
+extern int _threaddebuglevel;
+
+void
+threadmain(int argc, char **argv)
+{
+	char *addr;
+	SunSrv *srv;
+	Channel *nfs3chan;
+	Channel *mountchan;
+	Nfs3Handle h;
+
+	fmtinstall('B', sunrpcfmt);
+	fmtinstall('C', suncallfmt);
+	fmtinstall('H', encodefmt);
+	fmtinstall('I', eipfmt);
+	sunfmtinstall(&nfs3prog);
+	sunfmtinstall(&nfsmount3prog);
+
+	srv = sunsrv();
+	addr = "*";
+
+	ARGBEGIN{
+	case 'R':
+		srv->chatty++;
+		break;
+	case 'T':
+		_threaddebuglevel = 0xFFFFFFFF;
+		break;
+	case 'r':
+		srv->alwaysreject++;
+		break;
+	}ARGEND
+
+	if(argc != 1 && argc != 2)
+		usage();
+
+	if((disk = diskopenfile(argv[0])) == nil)
+		sysfatal("diskopen: %r");
+	if((disk = diskcache(disk, 16384, 256)) == nil)
+		sysfatal("diskcache: %r");
+
+	if((fsys = fsysopen(disk)) == nil)
+		sysfatal("ffsopen: %r");
+
+	nfs3chan = chancreate(sizeof(SunMsg*), 0);
+	mountchan = chancreate(sizeof(SunMsg*), 0);
+
+	if(argc > 1)
+		addr = argv[1];
+	addr = netmkaddr(addr, "udp", "2049");
+
+	if(sunsrvudp(srv, addr) < 0)
+		sysfatal("starting server: %r");
+	sunsrvprog(srv, &nfs3prog, nfs3chan);
+	sunsrvprog(srv, &nfsmount3prog, mountchan);
+
+	sunsrvthreadcreate(srv, nfs3proc, nfs3chan);
+	sunsrvthreadcreate(srv, mount3proc, mountchan);
+
+	fsgetroot(&h);
+	print("mountbackups -h %.*H %s /mountpoint\n", h.len, h.h, addr);
+
+	threadexits(nil);
+}
+
+void
+fsgetroot(Nfs3Handle *h)
+{
+	fsysroot(fsys, h);
+}
+
+Nfs3Status
+fsgetattr(SunAuthUnix *au, Nfs3Handle *h, Nfs3Attr *attr)
+{
+	return fsysgetattr(fsys, au, h, attr);
+}
+
+Nfs3Status
+fslookup(SunAuthUnix *au, Nfs3Handle *h, char *name, Nfs3Handle *nh)
+{
+	return fsyslookup(fsys, au, h, name, nh);
+}
+
+Nfs3Status
+fsaccess(SunAuthUnix *au, Nfs3Handle *h, u32int want, u32int *got, Nfs3Attr *attr)
+{
+	return fsysaccess(fsys, au, h, want, got, attr);
+}
+
+Nfs3Status
+fsreadlink(SunAuthUnix *au, Nfs3Handle *h, char **link)
+{
+	return fsysreadlink(fsys, au, h, link);
+}
+
+Nfs3Status
+fsreadfile(SunAuthUnix *au, Nfs3Handle *h, u32int count, u64int offset, uchar **data, u32int *pcount, u1int *peof)
+{
+	return fsysreadfile(fsys, au, h, count, offset, data, pcount, peof);
+}
+
+Nfs3Status
+fsreaddir(SunAuthUnix *au, Nfs3Handle *h, u32int count, u64int cookie, uchar **data, u32int *pcount, u1int *peof)
+{
+	return fsysreaddir(fsys, au, h, count, cookie, data, pcount, peof);
+}
+