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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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61
src/lib9/convD2M.c
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@ -3,30 +3,44 @@
#include <fcall.h>
uint
sizeD2M(Dir *d)
sizeD2Mu(Dir *d, int dotu)
{
char *sv[4];
int i, ns;
char *sv[5];
int i, ns, nstr, fixlen;
sv[0] = d->name;
sv[1] = d->uid;
sv[2] = d->gid;
sv[3] = d->muid;
fixlen = STATFIXLEN;
nstr = 4;
if(dotu){
fixlen = STATFIXLENU;
sv[4] = d->ext;
nstr = 5;
}
ns = 0;
for(i = 0; i < 4; i++)
for(i = 0; i < nstr; i++)
if(sv[i])
ns += strlen(sv[i]);
return STATFIXLEN + ns;
return fixlen + ns;
}
uint
convD2M(Dir *d, uchar *buf, uint nbuf)
sizeD2M(Dir *d)
{
return sizeD2Mu(d, 0);
}
uint
convD2Mu(Dir *d, uchar *buf, uint nbuf, int dotu)
{
uchar *p, *ebuf;
char *sv[4];
int i, ns, nsv[4], ss;
char *sv[5];
int i, ns, nsv[4], ss, nstr, fixlen;
if(nbuf < BIT16SZ)
return 0;
@ -39,8 +53,16 @@ convD2M(Dir *d, uchar *buf, uint nbuf)
sv[2] = d->gid;
sv[3] = d->muid;
fixlen = STATFIXLEN;
nstr = 4;
if(dotu){
fixlen = STATFIXLENU;
sv[4] = d->ext;
nstr = 5;
}
ns = 0;
for(i = 0; i < 4; i++){
for(i = 0; i < nstr; i++){
if(sv[i])
nsv[i] = strlen(sv[i]);
else
@ -48,7 +70,7 @@ convD2M(Dir *d, uchar *buf, uint nbuf)
ns += nsv[i];
}
ss = STATFIXLEN + ns;
ss = fixlen + ns;
/* set size befor erroring, so user can know how much is needed */
/* note that length excludes count field itself */
@ -77,7 +99,7 @@ convD2M(Dir *d, uchar *buf, uint nbuf)
PBIT64(p, d->length);
p += BIT64SZ;
for(i = 0; i < 4; i++){
for(i = 0; i < nstr; i++){
ns = nsv[i];
if(p + ns + BIT16SZ > ebuf)
return 0;
@ -87,9 +109,24 @@ convD2M(Dir *d, uchar *buf, uint nbuf)
memmove(p, sv[i], ns);
p += ns;
}
if(dotu){
PBIT32(p, d->uidnum);
p += BIT32SZ;
PBIT32(p, d->gidnum);
p += BIT32SZ;
PBIT32(p, d->muidnum);
p += BIT32SZ;
}
if(ss != p - buf)
return 0;
return p - buf;
}
uint
convD2M(Dir *d, uchar *buf, uint nbuf)
{
return convD2Mu(d, buf, nbuf, 0);
}