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Add 9P2000.u extensions.

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This commit is contained in:
rsc 2005-09-13 02:25:16 +00:00
parent 71f0567294
commit bbfdd7a64e
1 changed files with 55 additions and 9 deletions
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64
src/cmd/vac/vacfs.c
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@ -61,6 +61,7 @@ VacFs *fs;
VtConn *conn;
// VtSession *session;
int noperm;
int dotu;
Fid * newfid(int);
void error(char*);
@ -76,7 +77,7 @@ VacDir *dirBufGet(DirBuf*);
int dirBufUnget(DirBuf*);
void dirBufFree(DirBuf*);
int vacdirread(Fid *f, char *p, long off, long cnt);
int vdStat(VacDir *vd, uchar *p, int np);
int vdStat(VacFile *parent, VacDir *vd, uchar *p, int np);
void srv(void* a);
@ -242,6 +243,10 @@ rversion(Fid *unused)
if(strncmp(rhdr.version, "9P2000", 6) != 0)
return vtstrdup("unrecognized 9P version");
thdr.version = "9P2000";
if(strncmp(rhdr.version, "9P2000.u", 8) == 0){
dotu = 1;
thdr.version = "9P2000.u";
}
return nil;
}
@ -355,6 +360,8 @@ rwalk(Fid *f)
qid.type = QTFILE;
if(vacfileisdir(file))
qid.type = QTDIR;
if(vacfilegetmode(file)&ModeLink)
qid.type = QTSYMLINK;
qid.vers = vacfilegetmcount(file);
qid.path = vacfilegetid(file);
thdr.wqid[nqid] = qid;
@ -499,6 +506,12 @@ rread(Fid *f)
cnt = rhdr.count;
if(f->qid.type & QTDIR)
n = vacdirread(f, buf, off, cnt);
else if(vacfilegetmode(f->file)&ModeDevice)
return vtstrdup("device");
else if(vacfilegetmode(f->file)&ModeLink)
return vtstrdup("symbolic link");
else if(vacfilegetmode(f->file)&ModeNamedPipe)
return vtstrdup("named pipe");
else
n = vacfileread(vf, buf, cnt, off);
if(n < 0) {
@ -586,13 +599,16 @@ rstat(Fid *f)
{
VacDir dir;
static uchar statbuf[1024];
VacFile *parent;
if(!f->busy)
return vtstrdup(Enotexist);
parent = vacfilegetparent(f->file);
vacfilegetdir(f->file, &dir);
thdr.stat = statbuf;
thdr.nstat = vdStat(&dir, thdr.stat, sizeof statbuf);
thdr.nstat = vdStat(parent, &dir, thdr.stat, sizeof statbuf);
vdcleanup(&dir);
vacfiledecref(parent);
return 0;
}
@ -605,11 +621,16 @@ rwstat(Fid *f)
}
int
vdStat(VacDir *vd, uchar *p, int np)
vdStat(VacFile *parent, VacDir *vd, uchar *p, int np)
{
char *ext;
int n, ret;
uvlong size;
Dir dir;
VacFile *vf;
memset(&dir, 0, sizeof(dir));
ext = nil;
/*
* Where do path and version come from
@ -629,7 +650,28 @@ vdStat(VacDir *vd, uchar *p, int np)
dir.qid.type |= QTDIR;
dir.mode |= DMDIR;
}
if(vd->mode & (ModeLink|ModeDevice|ModeNamedPipe)){
vf = vacfilewalk(parent, vd->elem);
if(vf == nil)
return 0;
vacfilegetsize(vf, &size);
ext = malloc(size+1);
if(ext == nil)
return 0;
n = vacfileread(vf, ext, size, 0);
ext[size] = 0;
vacfiledecref(vf);
if(vd->mode & ModeLink){
dir.qid.type |= QTSYMLINK;
dir.mode |= DMSYMLINK;
}
if(vd->mode & ModeDevice)
dir.mode |= DMDEVICE;
if(vd->mode & ModeNamedPipe)
dir.mode |= DMNAMEDPIPE;
}
dir.atime = vd->atime;
dir.mtime = vd->mtime;
dir.length = vd->size;
@ -638,8 +680,11 @@ vdStat(VacDir *vd, uchar *p, int np)
dir.uid = vd->uid;
dir.gid = vd->gid;
dir.muid = vd->mid;
dir.ext = ext;
return convD2M(&dir, p, np);
ret = convD2Mu(&dir, p, np, dotu);
free(ext);
return ret;
}
DirBuf*
@ -726,7 +771,7 @@ vacdirread(Fid *f, char *p, long off, long cnt)
return -1;
break;
}
n = vdStat(vd, (uchar*)p, cnt-nb);
n = vdStat(f->file, vd, (uchar*)p, cnt-nb);
if(n <= BIT16SZ) {
dirBufUnget(f->db);
break;
@ -779,7 +824,7 @@ io(void)
continue;
if(n < 0)
break;
if(convM2S(mdata, n, &rhdr) != n)
if(convM2Su(mdata, n, &rhdr, dotu) != n)
sysfatal("convM2S conversion error");
if(dflag)
@ -793,6 +838,7 @@ io(void)
if(err){
thdr.type = Rerror;
thdr.ename = err;
thdr.errornum = 0;
}else{
thdr.type = rhdr.type + 1;
thdr.fid = rhdr.fid;
@ -800,7 +846,7 @@ io(void)
thdr.tag = rhdr.tag;
if(dflag)
fprint(2, "vacfs:->%F\n", &thdr);
n = convS2M(&thdr, mdata, messagesize);
n = convS2Mu(&thdr, mdata, messagesize, dotu);
if (err)
vtfree(err);