From d0cda8c42368dd1208469c7bd81749667df39a03 Mon Sep 17 00:00:00 2001
From: rsc <devnull@localhost>
Date: Thu, 28 Jul 2005 12:46:10 +0000
Subject: new

---
 src/cmd/vbackup/vftp.c | 379 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 379 insertions(+)
 create mode 100644 src/cmd/vbackup/vftp.c

(limited to 'src/cmd/vbackup')

diff --git a/src/cmd/vbackup/vftp.c b/src/cmd/vbackup/vftp.c
new file mode 100644
index 00000000..bae4b901
--- /dev/null
+++ b/src/cmd/vbackup/vftp.c
@@ -0,0 +1,379 @@
+#include <u.h>
+#include <libc.h>
+#include <bio.h>
+#include <thread.h>
+#include <venti.h>
+#include <sunrpc.h>
+#include <nfs3.h>
+#include <diskfs.h>
+
+uchar *buf;
+uint bufsize;
+Nfs3Handle cwd, root;
+Biobuf bin, bout;
+char pwd[1000];
+Fsys *fsys;
+SunAuthUnix *auth;
+VtConn *z;
+VtCache *c;
+Disk *disk;
+
+char *cmdhelp(int, char**);
+char *cmdcd(int, char**);
+char *cmdpwd(int, char**);
+char *cmdls(int, char**);
+char *cmdcp(int, char**);
+char *cmdblock(int, char**);
+char *cmddisk(int, char**);
+
+typedef struct Cmd Cmd;
+struct Cmd
+{
+	char *s;
+	char *(*fn)(int, char**);
+	char *help;
+};
+
+Cmd cmdtab[] = 
+{
+	"cd", cmdcd, "cd dir - change directory",
+	"ls", cmdls, "ls [-d] path... - list file",
+	"pwd", cmdpwd, "pwd - print working directory",
+	"help", cmdhelp, "help - print usage summaries",
+	"block", cmdblock, "block path offset - print disk offset of path's byte offset",
+	"disk", cmddisk, "disk offset count - dump disk contents",
+};
+
+char*
+ebuf(void)
+{
+	static char buf[ERRMAX];
+	
+	rerrstr(buf, sizeof buf);
+	return buf;
+}
+
+char*
+walk(char *path, Nfs3Handle *ph)
+{
+	char *p, *q;
+	Nfs3Handle h;
+	Nfs3Status ok;
+	
+	if(path[0] == '/')
+		h = root;
+	else
+		h = cwd;
+	for(p=path; *p; p=q){
+		q = strchr(p, '/');
+		if(q == nil)
+			q = p+strlen(p);
+		else
+			*q++ = 0;
+		if(*p == 0)
+			continue;
+		if((ok = fsyslookup(fsys, auth, &h, p, &h)) != Nfs3Ok){
+			nfs3errstr(ok);
+			return ebuf();
+		}
+	}
+	*ph = h;
+	return nil;
+}
+
+char*
+cmdhelp(int argc, char **argv)
+{
+	int i;
+	
+	for(i=0; i<nelem(cmdtab); i++)
+		print("%s\n", cmdtab[i].help);
+	return nil;
+}
+
+char*
+cmdcd(int argc, char **argv)
+{
+	char *err;
+	Nfs3Attr attr;
+	Nfs3Status ok;
+	Nfs3Handle h;
+	
+	if(argc != 2)
+		return "usage: cd dir";
+	
+	if((err = walk(argv[1], &h)) != nil)
+		return err;
+	if((ok = fsysgetattr(fsys, auth, &h, &attr)) != Nfs3Ok){
+		nfs3errstr(ok);
+		fprint(2, "%s: %r\n");
+		return nil;
+	}
+	if(attr.type != Nfs3FileDir)
+		return "not a directory";
+	if(argv[1][0] == '/')
+		pwd[0] = 0;
+	strcat(pwd, "/");
+	strcat(pwd, argv[1]);
+	cleanname(pwd);
+	cwd = h;
+	print("%s\n", pwd);
+	return nil;
+}
+
+char*
+cmdpwd(int argc, char **argv)
+{
+	if(argc != 1)
+		return "usage: pwd";
+
+	print("%s\n", pwd);
+	return nil;
+}
+
+/*
+ * XXX maybe make a list of these in memory and then print them nicer
+ */
+void
+ls(char *dir, char *elem, Nfs3Attr *attr)
+{
+	char c;
+	
+	c = ' ';	/* use attr->type */
+	Bprint(&bout, "%s%s%s", dir ? dir : "", dir && elem ? "/" : "", elem ? elem : "");
+	Bprint(&bout, " %c%luo %1d %4d %4d", c, attr->mode, attr->nlink, attr->uid, attr->gid);
+	Bprint(&bout, " %11,lld %11,lld %4d.%4d %#11,llux %#11,llux",
+		attr->size, attr->used, attr->major, attr->minor, attr->fsid, attr->fileid);
+	Bprint(&bout, "\n");
+}
+
+void
+lsdir(char *dir, Nfs3Handle *h)
+{
+	uchar *data, *p, *ep;
+	Nfs3Attr attr;
+	Nfs3Entry e;
+	Nfs3Handle eh;
+	u32int count;
+	u1int eof;
+	Nfs3Status ok;
+	u64int cookie;
+	
+	cookie = 0;
+	for(;;){
+		ok = fsysreaddir(fsys, auth, h, 8192, cookie, &data, &count, &eof);
+fprint(2, "got %d\n", count);
+		if(ok != Nfs3Ok){
+			nfs3errstr(ok);
+			fprint(2, "ls %s: %r\n", dir);
+			return;
+		}
+		p = data;
+		ep = data+count;
+		while(p<ep){
+			if(nfs3entryunpack(p, ep, &p, &e) < 0){
+				fprint(2, "%s: unpacking directory: %r\n", dir);
+				break;
+			}
+			cookie = e.cookie;
+			if((ok = fsyslookup(fsys, auth, h, e.name, &eh)) != Nfs3Ok){
+				nfs3errstr(ok);
+				fprint(2, "%s/%s: %r\n", dir, e.name);
+				continue;
+			}
+			if((ok = fsysgetattr(fsys, auth, &eh, &attr)) != Nfs3Ok){
+				nfs3errstr(ok);
+				fprint(2, "%s/%s: %r\n", dir, e.name);
+				continue;
+			}
+			ls(dir, e.name, &attr);
+		}	
+		free(data);
+		if(eof)
+			break;
+	}
+}
+
+char*
+cmdls(int argc, char **argv)
+{
+	int i;
+	int dflag;
+	char *e;
+	Nfs3Handle h;
+	Nfs3Attr attr;
+	Nfs3Status ok;
+	
+	dflag = 0;
+	ARGBEGIN{
+	case 'd':
+		dflag = 1;
+		break;
+	default:
+		return "usage: ls [-d] [path...]";
+	}ARGEND
+
+	if(argc == 0){
+		lsdir(nil, &cwd);
+		Bflush(&bout);
+		return nil;
+	}
+	
+	for(i=0; i<argc; i++){
+		if((e = walk(argv[i], &h)) != nil){
+			fprint(2, "%s: %s\n", argv[i], e);
+			continue;
+		}
+		if((ok = fsysgetattr(fsys, auth, &h, &attr)) != Nfs3Ok){
+			nfs3errstr(ok);
+			fprint(2, "%s: %r\n", argv[i]);
+			continue;
+		}
+		if(attr.type != Nfs3FileDir || dflag)
+			ls(argv[i], nil, &attr);
+		else
+			lsdir(argv[i], &h);
+		Bflush(&bout);
+	}
+	return nil;
+}
+
+char*
+cmdblock(int argc, char **argv)
+{
+	char *e;
+	Nfs3Handle h;
+	u64int bno;
+	
+	ARGBEGIN{
+	default:
+		return "usage: block path offset";
+	}ARGEND
+	
+	if(argc != 2)
+		return "usage: block path offset";
+
+	if((e = walk(argv[0], &h)) != nil){
+		fprint(2, "%s: %s\n", argv[0], e);
+		return nil;
+	}
+	if((bno = fsys->fileblock(fsys, &h, strtoll(argv[1], 0, 0))) == 0){
+		fprint(2, "%s: %r\n", argv[0]);
+		return nil;
+	}
+	print("%#llux\n", bno);
+	return nil;
+}
+
+char*
+cmddisk(int argc, char **argv)
+{
+	Block *b;
+	int delta, count, i;
+	u64int offset;
+	uchar *p;
+	
+	ARGBEGIN{
+	default:
+		return "usage: disk offset count";
+	}ARGEND
+	
+	if(argc != 2)
+		return "usage: disk offset count";
+
+	offset = strtoull(argv[0], 0, 0);
+	count = atoi(argv[1]);
+	delta = offset%fsys->blocksize;
+	
+	b = diskread(disk, fsys->blocksize, offset-delta);
+	if(b == nil){
+		fprint(2, "diskread: %r\n");
+		return nil;
+	}
+	p = b->data + delta;
+	for(i=0; i<count; i++){
+		Bprint(&bout, "%2.2ux ", p[i]);
+		if(i%16 == 15)
+			Bprint(&bout, "\n");
+		else if(i%8 == 7)
+			Bprint(&bout, " - ");
+	}
+	if(i%16 != 0)
+		Bprint(&bout, "\n");
+	Bflush(&bout);
+	blockput(b);
+	return nil;
+}
+
+void
+usage(void)
+{
+	fprint(2, "usage: vftp score\n");
+	threadexitsall("usage");
+}
+
+void
+threadmain(int argc, char **argv)
+{
+	char *err, *f[10], *p;
+	int i, nf;
+	uchar score[VtScoreSize];
+	Nfs3Status ok;
+	
+	ARGBEGIN{
+	case 'V':
+		chattyventi++;
+		break;
+	default:
+		usage();
+	}ARGEND
+	
+	if(argc != 1)
+		usage();
+
+	fmtinstall('F', vtfcallfmt);
+	fmtinstall('H', encodefmt);
+	fmtinstall('V', vtscorefmt);
+
+	if(vtparsescore(argv[0], nil, score) < 0)
+		sysfatal("bad score '%s'", argv[0]);
+	if((z = vtdial(nil)) == nil)
+		sysfatal("vtdial: %r");
+	if(vtconnect(z) < 0)
+		sysfatal("vtconnect: %r");
+	if((c = vtcachealloc(z, 16384, 32)) == nil)
+		sysfatal("vtcache: %r");
+	if((disk = diskopenventi(c, score)) == nil)
+		sysfatal("diskopenventi: %r");
+	if((fsys = fsysopen(disk)) == nil)
+		sysfatal("ffsopen: %r");
+
+	fprint(2, "block size %d\n", fsys->blocksize);
+	buf = emalloc(fsys->blocksize);
+	if((ok = fsysroot(fsys, &root)) != Nfs3Ok){
+		nfs3errstr(ok);
+		sysfatal("accessing root: %r");
+	}
+	cwd = root;
+	Binit(&bin, 0, OREAD);
+	Binit(&bout, 1, OWRITE);
+	
+	while(fprint(2, "vftp> "), (p = Brdstr(&bin, '\n', 1)) != nil){
+		if(p[0] == '#')
+			continue;
+		nf = tokenize(p, f, nelem(f));
+		if(nf == 0)
+			continue;
+		for(i=0; i<nelem(cmdtab); i++){
+			if(strcmp(f[0], cmdtab[i].s) == 0){
+				if((err = cmdtab[i].fn(nf, f)) != nil)
+					fprint(2, "%s\n", err);
+				break;
+			}
+		}
+		if(i == nelem(cmdtab))
+			fprint(2, "unknown command '%s'\n", f[0]);
+	}
+	threadexitsall(nil);
+}
+
-- 
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