1 d3df3087 2003-12-06 devnull #include	<u.h>
 2 d3df3087 2003-12-06 devnull #include	<libc.h>
 3 d3df3087 2003-12-06 devnull #include	<fcall.h>
 4 d3df3087 2003-12-06 devnull 
 5 d3df3087 2003-12-06 devnull int
 6 d3df3087 2003-12-06 devnull statcheck(uchar *buf, uint nbuf)
 7 d3df3087 2003-12-06 devnull {
 8 d3df3087 2003-12-06 devnull 	uchar *ebuf;
 9 d3df3087 2003-12-06 devnull 	int i;
10 d3df3087 2003-12-06 devnull 
11 d3df3087 2003-12-06 devnull 	ebuf = buf + nbuf;
12 d3df3087 2003-12-06 devnull 
13 d3df3087 2003-12-06 devnull 	if(nbuf < STATFIXLEN || nbuf != BIT16SZ + GBIT16(buf))
14 d3df3087 2003-12-06 devnull 		return -1;
15 d3df3087 2003-12-06 devnull 
16 d3df3087 2003-12-06 devnull 	buf += STATFIXLEN - 4 * BIT16SZ;
17 d3df3087 2003-12-06 devnull 
18 d3df3087 2003-12-06 devnull 	for(i = 0; i < 4; i++){
19 d3df3087 2003-12-06 devnull 		if(buf + BIT16SZ > ebuf)
20 d3df3087 2003-12-06 devnull 			return -1;
21 d3df3087 2003-12-06 devnull 		buf += BIT16SZ + GBIT16(buf);
22 d3df3087 2003-12-06 devnull 	}
23 d3df3087 2003-12-06 devnull 
24 d3df3087 2003-12-06 devnull 	if(buf != ebuf)
25 d3df3087 2003-12-06 devnull 		return -1;
26 d3df3087 2003-12-06 devnull 
27 d3df3087 2003-12-06 devnull 	return 0;
28 d3df3087 2003-12-06 devnull }
29 d3df3087 2003-12-06 devnull 
30 d3df3087 2003-12-06 devnull static char nullstring[] = "";
31 d3df3087 2003-12-06 devnull 
32 d3df3087 2003-12-06 devnull uint
33 d3df3087 2003-12-06 devnull convM2D(uchar *buf, uint nbuf, Dir *d, char *strs)
34 d3df3087 2003-12-06 devnull {
35 d3df3087 2003-12-06 devnull 	uchar *p, *ebuf;
36 d3df3087 2003-12-06 devnull 	char *sv[4];
37 d3df3087 2003-12-06 devnull 	int i, ns;
38 d3df3087 2003-12-06 devnull 
39 d3df3087 2003-12-06 devnull 	if(nbuf < STATFIXLEN)
40 d3df3087 2003-12-06 devnull 		return 0; 
41 d3df3087 2003-12-06 devnull 
42 d3df3087 2003-12-06 devnull 	p = buf;
43 d3df3087 2003-12-06 devnull 	ebuf = buf + nbuf;
44 d3df3087 2003-12-06 devnull 
45 d3df3087 2003-12-06 devnull 	p += BIT16SZ;	/* ignore size */
46 d3df3087 2003-12-06 devnull 	d->type = GBIT16(p);
47 d3df3087 2003-12-06 devnull 	p += BIT16SZ;
48 d3df3087 2003-12-06 devnull 	d->dev = GBIT32(p);
49 d3df3087 2003-12-06 devnull 	p += BIT32SZ;
50 d3df3087 2003-12-06 devnull 	d->qid.type = GBIT8(p);
51 d3df3087 2003-12-06 devnull 	p += BIT8SZ;
52 d3df3087 2003-12-06 devnull 	d->qid.vers = GBIT32(p);
53 d3df3087 2003-12-06 devnull 	p += BIT32SZ;
54 d3df3087 2003-12-06 devnull 	d->qid.path = GBIT64(p);
55 d3df3087 2003-12-06 devnull 	p += BIT64SZ;
56 d3df3087 2003-12-06 devnull 	d->mode = GBIT32(p);
57 d3df3087 2003-12-06 devnull 	p += BIT32SZ;
58 d3df3087 2003-12-06 devnull 	d->atime = GBIT32(p);
59 d3df3087 2003-12-06 devnull 	p += BIT32SZ;
60 d3df3087 2003-12-06 devnull 	d->mtime = GBIT32(p);
61 d3df3087 2003-12-06 devnull 	p += BIT32SZ;
62 d3df3087 2003-12-06 devnull 	d->length = GBIT64(p);
63 d3df3087 2003-12-06 devnull 	p += BIT64SZ;
64 d3df3087 2003-12-06 devnull 
65 d3df3087 2003-12-06 devnull 	for(i = 0; i < 4; i++){
66 d3df3087 2003-12-06 devnull 		if(p + BIT16SZ > ebuf)
67 d3df3087 2003-12-06 devnull 			return 0;
68 d3df3087 2003-12-06 devnull 		ns = GBIT16(p);
69 d3df3087 2003-12-06 devnull 		p += BIT16SZ;
70 d3df3087 2003-12-06 devnull 		if(p + ns > ebuf)
71 d3df3087 2003-12-06 devnull 			return 0;
72 d3df3087 2003-12-06 devnull 		if(strs){
73 d3df3087 2003-12-06 devnull 			sv[i] = strs;
74 d3df3087 2003-12-06 devnull 			memmove(strs, p, ns);
75 d3df3087 2003-12-06 devnull 			strs += ns;
76 d3df3087 2003-12-06 devnull 			*strs++ = '\0';
77 d3df3087 2003-12-06 devnull 		}
78 d3df3087 2003-12-06 devnull 		p += ns;
79 d3df3087 2003-12-06 devnull 	}
80 d3df3087 2003-12-06 devnull 
81 d3df3087 2003-12-06 devnull 	if(strs){
82 d3df3087 2003-12-06 devnull 		d->name = sv[0];
83 d3df3087 2003-12-06 devnull 		d->uid = sv[1];
84 d3df3087 2003-12-06 devnull 		d->gid = sv[2];
85 d3df3087 2003-12-06 devnull 		d->muid = sv[3];
86 d3df3087 2003-12-06 devnull 	}else{
87 d3df3087 2003-12-06 devnull 		d->name = nullstring;
88 d3df3087 2003-12-06 devnull 		d->uid = nullstring;
89 d3df3087 2003-12-06 devnull 		d->gid = nullstring;
90 d3df3087 2003-12-06 devnull 		d->muid = nullstring;
91 d3df3087 2003-12-06 devnull 	}
92 d3df3087 2003-12-06 devnull 	
93 d3df3087 2003-12-06 devnull 	return p - buf;
94 d3df3087 2003-12-06 devnull }