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Add 9P2000.u functions.

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This commit is contained in:
rsc 2005-09-13 01:37:14 +00:00
parent b7eed2e0e1
commit fb941e08c5
4 changed files with 120 additions and 22 deletions
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44
src/lib9/convM2D.c
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@ -3,10 +3,10 @@
#include <fcall.h>
int
statcheck(uchar *buf, uint nbuf)
statchecku(uchar *buf, uint nbuf, int dotu)
{
uchar *ebuf;
int i;
int i, nstr;
ebuf = buf + nbuf;
@ -15,12 +15,18 @@ statcheck(uchar *buf, uint nbuf)
buf += STATFIXLEN - 4 * BIT16SZ;
for(i = 0; i < 4; i++){
nstr = 4;
if(dotu)
nstr = 5;
for(i = 0; i < nstr; i++){
if(buf + BIT16SZ > ebuf)
return -1;
buf += BIT16SZ + GBIT16(buf);
}
if(dotu)
buf += 3*BIT32SZ;
if(buf != ebuf)
return -1;
@ -30,11 +36,11 @@ statcheck(uchar *buf, uint nbuf)
static char nullstring[] = "";
uint
convM2D(uchar *buf, uint nbuf, Dir *d, char *strs)
convM2Du(uchar *buf, uint nbuf, Dir *d, char *strs, int dotu)
{
uchar *p, *ebuf;
char *sv[4];
int i, ns;
char *sv[5];
int i, ns, nstr;
if(nbuf < STATFIXLEN)
return 0;
@ -62,7 +68,10 @@ convM2D(uchar *buf, uint nbuf, Dir *d, char *strs)
d->length = GBIT64(p);
p += BIT64SZ;
for(i = 0; i < 4; i++){
nstr = 4;
if(dotu)
nstr = 5;
for(i = 0; i < nstr; i++){
if(p + BIT16SZ > ebuf)
return 0;
ns = GBIT16(p);
@ -78,17 +87,38 @@ convM2D(uchar *buf, uint nbuf, Dir *d, char *strs)
p += ns;
}
if(dotu){
if(p + BIT32SZ*3 > ebuf)
return 0;
d->uidnum = GBIT32(p);
p += BIT32SZ;
d->gidnum = GBIT32(p);
p += BIT32SZ;
d->muidnum = GBIT32(p);
p += BIT32SZ;
}
if(strs){
d->name = sv[0];
d->uid = sv[1];
d->gid = sv[2];
d->muid = sv[3];
d->ext = nullstring;
if(dotu)
d->ext = sv[4];
}else{
d->name = nullstring;
d->uid = nullstring;
d->gid = nullstring;
d->muid = nullstring;
d->ext = nullstring;
}
return p - buf;
}
uint
convM2D(uchar *buf, uint nbuf, Dir *d, char *strs)
{
return convM2Du(buf, nbuf, d, strs, 0);
}