1 #include <u.h>
2 #include <libc.h>
3 #include <thread.h>
4 #include <sunrpc.h>
5 #include <nfs3.h>
6 #include <diskfs.h>
7 
8 int debug;
9 
10 void
11 usage(void)
12 {
13 	fprint(2, "usage: fsview fspartition cmd\n");
14 	fprint(2, "cmd is:\n");
15 	fprint(2, "\tcat file\n");
16 	fprint(2, "\tls dir\n");
17 	fprint(2, "\tstat file\n");
18 	threadexitsall("usage");
19 }
20 
21 void
22 printattr(Nfs3Attr *attr)
23 {
24 	Fmt fmt;
25 	char buf[256];
26 
27 	fmtfdinit(&fmt, 2, buf, sizeof buf);
28 	nfs3attrprint(&fmt, attr);
29 	fmtfdflush(&fmt);
30 	fprint(2, "\n");
31 }
32 
33 char buf[8192];
34 
35 void
36 x(int ok)
37 {
38 	if(ok != Nfs3Ok){
39 		nfs3errstr(ok);
40 		sysfatal("%r");
41 	}
42 }
43 
44 void
45 threadmain(int argc, char **argv)
46 {
47 	char *p, *q;
48 	u32int n;
49 	Disk *disk;
50 	Fsys *fsys;
51 	Nfs3Handle h;
52 	SunAuthUnix au;
53 	Nfs3Attr attr;
54 	u64int offset;
55 	u1int eof;
56 	uchar *data;
57 	char *link;
58 
59 	ARGBEGIN{
60 	case 'd':
61 		debug = 1;
62 		break;
63 	default:
64 		usage();
65 	}ARGEND
66 
67 	if(argc != 3)
68 		usage();
69 
70 	if((disk = diskopenfile(argv[0])) == nil)
71 		sysfatal("diskopen: %r");
72 	if((disk = diskcache(disk, 16384, 16)) == nil)
73 		sysfatal("diskcache: %r");
74 	if((fsys = fsysopen(disk)) == nil)
75 		sysfatal("fsysopen: %r");
76 
77 	allowall = 1;
78 	memset(&au, 0, sizeof au);
79 
80 	/* walk */
81 	if(debug) fprint(2, "get root...");
82 	x(fsysroot(fsys, &h));
83 	p = argv[2];
84 	while(*p){
85 		while(*p == '/')
86 			p++;
87 		if(*p == 0)
88 			break;
89 		q = strchr(p, '/');
90 		if(q){
91 			*q = 0;
92 			q++;
93 		}else
94 			q = "";
95 		if(debug) fprint(2, "walk %s...", p);
96 		x(fsyslookup(fsys, &au, &h, p, &h));
97 		p = q;
98 	}
99 
100 	if(debug) fprint(2, "getattr...");
101 	x(fsysgetattr(fsys, &au, &h, &attr));
102 	printattr(&attr);
103 
104 	/* do the op */
105 	if(strcmp(argv[1], "cat") == 0){
106 		switch(attr.type){
107 		case Nfs3FileReg:
108 		case Nfs3FileDir:
109 			offset = 0;
110 			for(;;){
111 				x(fsysreadfile(fsys, &au, &h, sizeof buf, offset, &data, &n, &eof));
112 				if(n){
113 					write(1, data, n);
114 					free(data);
115 					offset += n;
116 				}
117 				if(eof)
118 					break;
119 			}
120 			break;
121 		case Nfs3FileSymlink:
122 			x(fsysreadlink(fsys, &au, &h, &link));
123 			print("%s\n", link);
124 			break;
125 		default:
126 			print("cannot cat: not file, not link\n");
127 			break;
128 		}
129 	}else if(strcmp(argv[1], "ls") == 0){
130 		/* not implemented */
131 	}else if(strcmp(argv[1], "stat") == 0){
132 		/* already done */
133 	}
134 	threadexitsall(nil);
135 }