1*8ccd4a63SDavid du Colombier #include <u.h>
2*8ccd4a63SDavid du Colombier #include <libc.h>
3*8ccd4a63SDavid du Colombier #include <fcall.h>
4*8ccd4a63SDavid du Colombier
5*8ccd4a63SDavid du Colombier int
statcheck(uchar * buf,uint nbuf)6*8ccd4a63SDavid du Colombier statcheck(uchar *buf, uint nbuf)
7*8ccd4a63SDavid du Colombier {
8*8ccd4a63SDavid du Colombier uchar *ebuf;
9*8ccd4a63SDavid du Colombier int i;
10*8ccd4a63SDavid du Colombier
11*8ccd4a63SDavid du Colombier ebuf = buf + nbuf;
12*8ccd4a63SDavid du Colombier
13*8ccd4a63SDavid du Colombier if(nbuf < STATFIXLEN || nbuf != BIT16SZ + GBIT16(buf))
14*8ccd4a63SDavid du Colombier return -1;
15*8ccd4a63SDavid du Colombier
16*8ccd4a63SDavid du Colombier buf += STATFIXLEN - 4 * BIT16SZ;
17*8ccd4a63SDavid du Colombier
18*8ccd4a63SDavid du Colombier for(i = 0; i < 4; i++){
19*8ccd4a63SDavid du Colombier if(buf + BIT16SZ > ebuf)
20*8ccd4a63SDavid du Colombier return -1;
21*8ccd4a63SDavid du Colombier buf += BIT16SZ + GBIT16(buf);
22*8ccd4a63SDavid du Colombier }
23*8ccd4a63SDavid du Colombier
24*8ccd4a63SDavid du Colombier if(buf != ebuf)
25*8ccd4a63SDavid du Colombier return -1;
26*8ccd4a63SDavid du Colombier
27*8ccd4a63SDavid du Colombier return 0;
28*8ccd4a63SDavid du Colombier }
29*8ccd4a63SDavid du Colombier
30*8ccd4a63SDavid du Colombier static char nullstring[] = "";
31*8ccd4a63SDavid du Colombier
32*8ccd4a63SDavid du Colombier uint
convM2D(uchar * buf,uint nbuf,Dir * d,char * strs)33*8ccd4a63SDavid du Colombier convM2D(uchar *buf, uint nbuf, Dir *d, char *strs)
34*8ccd4a63SDavid du Colombier {
35*8ccd4a63SDavid du Colombier uchar *p, *ebuf;
36*8ccd4a63SDavid du Colombier char *sv[4];
37*8ccd4a63SDavid du Colombier int i, ns;
38*8ccd4a63SDavid du Colombier
39*8ccd4a63SDavid du Colombier if(nbuf < STATFIXLEN)
40*8ccd4a63SDavid du Colombier return 0;
41*8ccd4a63SDavid du Colombier
42*8ccd4a63SDavid du Colombier p = buf;
43*8ccd4a63SDavid du Colombier ebuf = buf + nbuf;
44*8ccd4a63SDavid du Colombier
45*8ccd4a63SDavid du Colombier p += BIT16SZ; /* ignore size */
46*8ccd4a63SDavid du Colombier d->type = GBIT16(p);
47*8ccd4a63SDavid du Colombier p += BIT16SZ;
48*8ccd4a63SDavid du Colombier d->dev = GBIT32(p);
49*8ccd4a63SDavid du Colombier p += BIT32SZ;
50*8ccd4a63SDavid du Colombier d->qid.type = GBIT8(p);
51*8ccd4a63SDavid du Colombier p += BIT8SZ;
52*8ccd4a63SDavid du Colombier d->qid.vers = GBIT32(p);
53*8ccd4a63SDavid du Colombier p += BIT32SZ;
54*8ccd4a63SDavid du Colombier d->qid.path = GBIT64(p);
55*8ccd4a63SDavid du Colombier p += BIT64SZ;
56*8ccd4a63SDavid du Colombier d->mode = GBIT32(p);
57*8ccd4a63SDavid du Colombier p += BIT32SZ;
58*8ccd4a63SDavid du Colombier d->atime = GBIT32(p);
59*8ccd4a63SDavid du Colombier p += BIT32SZ;
60*8ccd4a63SDavid du Colombier d->mtime = GBIT32(p);
61*8ccd4a63SDavid du Colombier p += BIT32SZ;
62*8ccd4a63SDavid du Colombier d->length = GBIT64(p);
63*8ccd4a63SDavid du Colombier p += BIT64SZ;
64*8ccd4a63SDavid du Colombier
65*8ccd4a63SDavid du Colombier for(i = 0; i < 4; i++){
66*8ccd4a63SDavid du Colombier if(p + BIT16SZ > ebuf)
67*8ccd4a63SDavid du Colombier return 0;
68*8ccd4a63SDavid du Colombier ns = GBIT16(p);
69*8ccd4a63SDavid du Colombier p += BIT16SZ;
70*8ccd4a63SDavid du Colombier if(p + ns > ebuf)
71*8ccd4a63SDavid du Colombier return 0;
72*8ccd4a63SDavid du Colombier if(strs){
73*8ccd4a63SDavid du Colombier sv[i] = strs;
74*8ccd4a63SDavid du Colombier memmove(strs, p, ns);
75*8ccd4a63SDavid du Colombier strs += ns;
76*8ccd4a63SDavid du Colombier *strs++ = '\0';
77*8ccd4a63SDavid du Colombier }
78*8ccd4a63SDavid du Colombier p += ns;
79*8ccd4a63SDavid du Colombier }
80*8ccd4a63SDavid du Colombier
81*8ccd4a63SDavid du Colombier if(strs){
82*8ccd4a63SDavid du Colombier d->name = sv[0];
83*8ccd4a63SDavid du Colombier d->uid = sv[1];
84*8ccd4a63SDavid du Colombier d->gid = sv[2];
85*8ccd4a63SDavid du Colombier d->muid = sv[3];
86*8ccd4a63SDavid du Colombier }else{
87*8ccd4a63SDavid du Colombier d->name = nullstring;
88*8ccd4a63SDavid du Colombier d->uid = nullstring;
89*8ccd4a63SDavid du Colombier d->gid = nullstring;
90*8ccd4a63SDavid du Colombier d->muid = nullstring;
91*8ccd4a63SDavid du Colombier }
92*8ccd4a63SDavid du Colombier
93*8ccd4a63SDavid du Colombier return p - buf;
94*8ccd4a63SDavid du Colombier }
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