void
validstat(uint8_t *s, usize n)
{
usize m;
char buf[64];
if(statcheck(s, n) < 0)
error(Ebadstat);
/* verify that name entry is acceptable */
s += STATFIXLEN - 4*BIT16SZ; /* location of first string */
/*
* s now points at count for first string.
* if it's too long, let the server decide; this is
* only for his protection anyway. otherwise
* we'd have to allocate and waserror.
*/
m = GBIT16(s);
s += BIT16SZ;
if(m+1 > sizeof buf)
return;
memmove(buf, s, m);
buf[m] = '\0';
/* name could be '/' */
if(strcmp(buf, "/") != 0)
validname(buf, 0);
}
static int
dirpackage(uint8_t *buf, int ts, Dir **d, uint32_t *nd, int dotu)
{
char *s;
int ss, i, n, nn;
uint m;
*d = nil;
*nd = 0;
if(ts <= 0)
return 0;
/*
* first find number of all stats, check they look like stats, & size all associated strings
*/
ss = 0;
n = 0;
for(i = 0; i < ts; i += m){
m = BIT16SZ + GBIT16(&buf[i]);
if(statcheck(&buf[i], m, dotu) < 0)
break;
ss += m;
n++;
}
if(i != ts) {
DEBUG("statcheck");
return EBADRPC;
}
*d = malloc_9p(n * sizeof(Dir) + ss);
if (*d == NULL)
return ENOMEM;
/*
* then convert all buffers
*/
s = (char*)*d + n * sizeof(Dir);
nn = 0;
for(i = 0; i < ts; i += m){
m = BIT16SZ + GBIT16(&buf[i]);
if(nn >= n || convM2D(&buf[i], m, *d + nn, s, dotu) != m){
free_9p(*d);
*d = nil;
DEBUG("convM2D");
return EBADRPC;
}
nn++;
s += m;
}
*nd = nn;
return 0;
}
static void
rstat(Fcall* f)
{
Dir d;
cleannames();
convM2D(f->stat, f->nstat, &d, statbuf);
d.name = importname(d.name);
f->nstat = convD2M(&d, (uchar*)dirbuf, sizeof(dirbuf));
f->stat = (uchar*)dirbuf;
if (statcheck(f->stat, f->nstat) < 0)
dprint("stat fails\n");
}
static void
twstat(Fcall* f)
{
Dir d;
cleannames();
if (convM2D(f->stat, f->nstat, &d, statbuf) <= BIT16SZ)
return;
d.name = exportname(d.name);
f->nstat = convD2M(&d, (uchar*)dirbuf, sizeof(dirbuf));
f->stat = (uchar*)dirbuf;
if (statcheck(f->stat, f->nstat) < 0)
dprint("stat fails\n");
}
static
long
dirpackage(uchar *buf, long ts, Dir **d)
{
char *s;
long ss, i, n, nn, m;
*d = nil;
if(ts <= 0)
return 0;
/*
* first find number of all stats, check they look like stats, & size all associated strings
*/
ss = 0;
n = 0;
for(i = 0; i < ts; i += m){
m = BIT16SZ + GBIT16(&buf[i]);
if(statcheck(&buf[i], m) < 0)
break;
ss += m;
n++;
}
if(i != ts)
return -1;
*d = malloc(n * sizeof(Dir) + ss);
if(*d == nil)
return -1;
/*
* then convert all buffers
*/
s = (char*)*d + n * sizeof(Dir);
nn = 0;
for(i = 0; i < ts; i += m){
m = BIT16SZ + GBIT16((uchar*)&buf[i]);
if(nn >= n || convM2D(&buf[i], m, *d + nn, s) != m){
free(*d);
*d = nil;
return -1;
}
nn++;
s += m;
}
return nn;
}
