void
vacstdin(VacFile *fp, char *name)
{
int64_t off;
VacFile *f;
static char buf[8192];
int n;
if((f = vacfilecreate(fp, name, 0666)) == nil){
warn("vacfilecreate %s: %r", name);
return;
}
off = 0;
while((n = read(0, buf, sizeof buf)) > 0){
if(vacfilewrite(f, buf, n, off) < 0){
warn("venti write %s: %r", name);
vacfiledecref(f);
return;
}
off += n;
}
vacfileflush(f, 1);
vacfiledecref(f);
}
char *
rremove(Fid *f)
{
VacFile *vf, *vfp;
char errbuf[80];
char *err = nil;
if(!f->busy)
return vtstrdup(Enotexist);
vf = f->file;
vfp = vacfilegetparent(vf);
if(!permf(vfp, f->user, Pwrite)) {
err = Eperm;
goto Exit;
}
if(!vacfileremove(vf)) {
rerrstr(errbuf, sizeof errbuf);
err = errbuf;
}
Exit:
vacfiledecref(vfp);
rclunk(f);
return vtstrdup(err);
}
char*
rcreate(Fid* fid)
{
VacFile *vf;
uint32_t mode;
if(fid->open)
return vtstrdup(Eisopen);
if(!fid->busy)
return vtstrdup(Enotexist);
if(fs->mode & ModeSnapshot)
return vtstrdup(Erdonly);
vf = fid->file;
if(!vacfileisdir(vf))
return vtstrdup(Enotdir);
if(!permf(vf, fid->user, Pwrite))
return vtstrdup(Eperm);
mode = rhdr.perm & 0777;
if(rhdr.perm & DMDIR){
if((rhdr.mode & OTRUNC) || (rhdr.perm & DMAPPEND))
return vtstrdup(Emode);
switch(rhdr.mode & OPERM){
default:
return vtstrdup(Emode);
case OEXEC:
case OREAD:
break;
case OWRITE:
case ORDWR:
return vtstrdup(Eperm);
}
mode |= ModeDir;
}
vf = vacfilecreate(vf, rhdr.name, mode);
if(vf == nil) {
char err[80];
rerrstr(err, sizeof err);
return vtstrdup(err);
}
vacfiledecref(fid->file);
fid->file = vf;
fid->qid.type = QTFILE;
if(vacfileisdir(vf))
fid->qid.type = QTDIR;
fid->qid.vers = vacfilegetmcount(vf);
fid->qid.path = vacfilegetid(vf);
thdr.qid = fid->qid;
thdr.iounit = messagesize - IOHDRSZ;
return 0;
}
char *
rclunk(Fid *f)
{
f->busy = 0;
f->open = 0;
vtfree(f->user);
f->user = nil;
if(f->file)
vacfiledecref(f->file);
f->file = nil;
vdeclose(f->vde);
f->vde = nil;
return 0;
}
char *
rstat(Fid *f)
{
VacDir dir;
static uint8_t statbuf[1024];
VacFile *parent;
if(!f->busy)
return vtstrdup(Enotexist);
parent = vacfilegetparent(f->file);
vacfilegetdir(f->file, &dir);
thdr.stat = statbuf;
thdr.nstat = vacstat(parent, &dir, thdr.stat, sizeof statbuf);
vdcleanup(&dir);
vacfiledecref(parent);
return 0;
}
int
vacmerge(VacFile *fp, char *name)
{
VacFs *mfs;
VacDir vd;
VacDirEnum *de;
VacFile *mp;
uint64_t maxqid, offset;
if(strlen(name) < 4 || strcmp(name+strlen(name)-4, ".vac") != 0)
return -1;
if((mfs = vacfsopen(z, name, VtOREAD, 100)) == nil)
return -1;
if(verbose)
fprint(2, "merging %s\n", name);
mp = vacfsgetroot(mfs);
de = vdeopen(mp);
if(de){
offset = 0;
if(vacfsgetmaxqid(mfs, &maxqid) >= 0){
_vacfsnextqid(fs, &offset);
vacfsjumpqid(fs, maxqid+1);
}
while(vderead(de, &vd) > 0){
if(vd.qid > maxqid){
warn("vacmerge %s: maxqid=%lld but %s has %lld",
name, maxqid, vd.elem, vd.qid);
vacfsjumpqid(fs, vd.qid - maxqid);
maxqid = vd.qid;
}
vacmergefile(fp, mp, &vd, name,
offset, maxqid);
vdcleanup(&vd);
}
vdeclose(de);
}
vacfiledecref(mp);
vacfsclose(mfs);
return 0;
}
/*
* fp is the directory we're writing.
* mp is the directory whose contents we're merging in.
* d is the directory entry of the file from mp that we want to add to fp.
* vacfile is the name of the .vac file, for error messages.
* offset is the qid that qid==0 in mp should correspond to.
* max is the maximum qid we expect to see (not really needed).
*/
int
vacmergefile(VacFile *fp, VacFile *mp, VacDir *d, char *vacfile,
int64_t offset, int64_t max)
{
VtEntry ed, em;
VacFile *mf;
VacFile *f;
mf = vacfilewalk(mp, d->elem);
if(mf == nil){
warn("could not walk %s in %s", d->elem, vacfile);
return -1;
}
if(vacfilegetentries(mf, &ed, &em) < 0){
warn("could not get entries for %s in %s", d->elem, vacfile);
vacfiledecref(mf);
return -1;
}
if((f = vacfilecreate(fp, d->elem, d->mode)) == nil){
warn("vacfilecreate %s: %r", d->elem);
vacfiledecref(mf);
return -1;
}
if(d->qidspace){
d->qidoffset += offset;
d->qidmax += offset;
}else{
d->qidspace = 1;
d->qidoffset = offset;
d->qidmax = max;
}
if(vacfilesetdir(f, d) < 0
|| vacfilesetentries(f, &ed, &em) < 0
|| vacfilesetqidspace(f, d->qidoffset, d->qidmax) < 0){
warn("vacmergefile %s: %r", d->elem);
vacfiledecref(mf);
vacfiledecref(f);
return -1;
}
vacfiledecref(mf);
vacfiledecref(f);
return 0;
}
void
threadmain(int argc, char **argv)
{
int i, j, fd, n, printstats;
Dir *d;
char *s;
uint64_t u;
VacFile *f, *fdiff;
VacFs *fsdiff;
int blocksize;
int outfd;
char *stdinname;
char *diffvac;
uint64_t qid;
fmtinstall('F', vtfcallfmt);
fmtinstall('H', encodefmt);
fmtinstall('V', vtscorefmt);
blocksize = BlockSize;
stdinname = nil;
printstats = 0;
fsdiff = nil;
diffvac = nil;
ARGBEGIN{
case 'V':
chattyventi++;
break;
case 'a':
archivefile = EARGF(usage());
break;
case 'b':
u = unittoull(EARGF(usage()));
if(u < 512)
u = 512;
if(u > VtMaxLumpSize)
u = VtMaxLumpSize;
blocksize = u;
break;
case 'd':
diffvac = EARGF(usage());
break;
case 'e':
excludepattern(EARGF(usage()));
break;
case 'f':
vacfile = EARGF(usage());
break;
case 'h':
host = EARGF(usage());
break;
case 'i':
stdinname = EARGF(usage());
break;
case 'm':
merge++;
break;
case 'q':
qdiff++;
break;
case 's':
printstats++;
break;
case 'v':
verbose++;
break;
case 'x':
loadexcludefile(EARGF(usage()));
break;
default:
usage();
}ARGEND
if(argc == 0 && !stdinname)
usage();
if(archivefile && (vacfile || diffvac)){
fprint(2, "cannot use -a with -f, -d\n");
usage();
}
z = vtdial(host);
if(z == nil)
sysfatal("could not connect to server: %r");
if(vtconnect(z) < 0)
sysfatal("vtconnect: %r");
// Setup:
// fs is the output vac file system
// f is directory in output vac to write new files
// fdiff is corresponding directory in existing vac
if(archivefile){
VacFile *fp;
char yyyy[5];
char mmdd[10];
char oldpath[40];
Tm tm;
fdiff = nil;
if((outfd = open(archivefile, ORDWR)) < 0){
if(access(archivefile, 0) >= 0)
sysfatal("open %s: %r", archivefile);
if((outfd = create(archivefile, OWRITE, 0666)) < 0)
sysfatal("create %s: %r", archivefile);
atexit(removevacfile); // because it is new
if((fs = vacfscreate(z, blocksize, 512)) == nil)
sysfatal("vacfscreate: %r");
}else{
if((fs = vacfsopen(z, archivefile, VtORDWR, 512)) == nil)
sysfatal("vacfsopen %s: %r", archivefile);
if((fdiff = recentarchive(fs, oldpath)) != nil){
if(verbose)
fprint(2, "diff %s\n", oldpath);
}else
if(verbose)
fprint(2, "no recent archive to diff against\n");
}
// Create yyyy/mmdd.
tm = *localtime(time(0));
snprint(yyyy, sizeof yyyy, "%04d", tm.year+1900);
fp = vacfsgetroot(fs);
if((f = vacfilewalk(fp, yyyy)) == nil
&& (f = vacfilecreate(fp, yyyy, ModeDir|0555)) == nil)
sysfatal("vacfscreate %s: %r", yyyy);
vacfiledecref(fp);
fp = f;
snprint(mmdd, sizeof mmdd, "%02d%02d", tm.mon+1, tm.mday);
n = 0;
while((f = vacfilewalk(fp, mmdd)) != nil){
vacfiledecref(f);
n++;
snprint(mmdd+4, sizeof mmdd-4, ".%d", n);
}
f = vacfilecreate(fp, mmdd, ModeDir|0555);
if(f == nil)
sysfatal("vacfscreate %s/%s: %r", yyyy, mmdd);
vacfiledecref(fp);
if(verbose)
fprint(2, "archive %s/%s\n", yyyy, mmdd);
}else{
if(vacfile == nil)
outfd = 1;
else if((outfd = create(vacfile, OWRITE, 0666)) < 0)
sysfatal("create %s: %r", vacfile);
atexit(removevacfile);
if((fs = vacfscreate(z, blocksize, 512)) == nil)
sysfatal("vacfscreate: %r");
f = vacfsgetroot(fs);
fdiff = nil;
if(diffvac){
if((fsdiff = vacfsopen(z, diffvac, VtOREAD, 128)) == nil)
warn("vacfsopen %s: %r", diffvac);
else
fdiff = vacfsgetroot(fsdiff);
}
}
if(stdinname)
vacstdin(f, stdinname);
for(i=0; i<argc; i++){
// We can't use / and . and .. and ../.. as valid archive
// names, so expand to the list of files in the directory.
if(argv[i][0] == 0){
warn("empty string given as command-line argument");
continue;
}
cleanname(argv[i]);
if(strcmp(argv[i], "/") == 0
|| strcmp(argv[i], ".") == 0
|| strcmp(argv[i], "..") == 0
|| (strlen(argv[i]) > 3 && strcmp(argv[i]+strlen(argv[i])-3, "/..") == 0)){
if((fd = open(argv[i], OREAD)) < 0){
warn("open %s: %r", argv[i]);
continue;
}
while((n = dirread(fd, &d)) > 0){
for(j=0; j<n; j++){
s = vtmalloc(strlen(argv[i])+1+strlen(d[j].name)+1);
strcpy(s, argv[i]);
strcat(s, "/");
strcat(s, d[j].name);
cleanname(s);
vac(f, fdiff, s, &d[j]);
}
free(d);
}
close(fd);
continue;
}
if((d = dirstat(argv[i])) == nil){
warn("stat %s: %r", argv[i]);
continue;
}
vac(f, fdiff, argv[i], d);
free(d);
}
if(fdiff)
vacfiledecref(fdiff);
/*
* Record the maximum qid so that vacs can be merged
* without introducing overlapping qids. Older versions
* of vac arranged that the root would have the largest
* qid in the file system, but we can't do that anymore
* (the root gets created first!).
*/
if(_vacfsnextqid(fs, &qid) >= 0)
vacfilesetqidspace(f, 0, qid);
vacfiledecref(f);
/*
* Copy fsdiff's root block score into fs's slot for that,
* so that vacfssync will copy it into root.prev for us.
* Just nice documentation, no effect.
*/
if(fsdiff)
memmove(fs->score, fsdiff->score, VtScoreSize);
if(vacfssync(fs) < 0)
fprint(2, "vacfssync: %r\n");
fprint(outfd, "vac:%V\n", fs->score);
atexitdont(removevacfile);
vacfsclose(fs);
vthangup(z);
if(printstats){
fprint(2,
"%d files, %d files skipped, %d directories\n"
"%lld data bytes written, %lld data bytes skipped\n",
stats.nfile, stats.skipfiles, stats.ndir, stats.data, stats.skipdata);
dup(2, 1);
packetstats();
}
threadexitsall(0);
}
/*
* Archive the file named name, which has stat info d,
* into the vac directory fp (p = parent).
*
* If we're doing a vac -d against another archive, the
* equivalent directory to fp in that archive is diffp.
*/
void
vac(VacFile *fp, VacFile *diffp, char *name, Dir *d)
{
char *elem, *s;
static char buf[65536];
int fd, i, n, bsize;
int64_t off;
Dir *dk; // kids
VacDir vd, vddiff;
VacFile *f, *fdiff;
VtEntry e;
if(!includefile(name)){
warn("excluding %s%s", name, (d->mode&DMDIR) ? "/" : "");
return;
}
if(d->mode&DMDIR)
stats.ndir++;
else
stats.nfile++;
if(merge && vacmerge(fp, name) >= 0)
return;
if(verbose)
fprint(2, "%s%s\n", name, (d->mode&DMDIR) ? "/" : "");
if((fd = open(name, OREAD)) < 0){
warn("open %s: %r", name);
return;
}
elem = strrchr(name, '/');
if(elem)
elem++;
else
elem = name;
plan9tovacdir(&vd, d);
if((f = vacfilecreate(fp, elem, vd.mode)) == nil){
warn("vacfilecreate %s: %r", name);
return;
}
if(diffp)
fdiff = vacfilewalk(diffp, elem);
else
fdiff = nil;
if(vacfilesetdir(f, &vd) < 0)
warn("vacfilesetdir %s: %r", name);
if(d->mode&DMDIR){
while((n = dirread(fd, &dk)) > 0){
for(i=0; i<n; i++){
s = vtmalloc(strlen(name)+1+strlen(dk[i].name)+1);
strcpy(s, name);
strcat(s, "/");
strcat(s, dk[i].name);
vac(f, fdiff, s, &dk[i]);
free(s);
}
free(dk);
}
}else{
off = 0;
bsize = fs->bsize;
if(fdiff){
/*
* Copy fdiff's contents into f by moving the score.
* We'll diff and update below.
*/
if(vacfilegetentries(fdiff, &e, nil) >= 0)
if(vacfilesetentries(f, &e, nil) >= 0){
bsize = e.dsize;
/*
* Or if -q is set, and the metadata looks the same,
* don't even bother reading the file.
*/
if(qdiff && vacfilegetdir(fdiff, &vddiff) >= 0){
if(vddiff.mtime == vd.mtime)
if(vddiff.size == vd.size)
if(!vddiff.plan9 || (/* vddiff.p9path == vd.p9path && */ vddiff.p9version == vd.p9version)){
stats.skipfiles++;
stats.nfile--;
vdcleanup(&vddiff);
goto Out;
}
/*
* Skip over presumably-unchanged prefix
* of an append-only file.
*/
if(vd.mode&ModeAppend)
if(vddiff.size < vd.size)
if(vddiff.plan9 && vd.plan9)
if(vddiff.p9path == vd.p9path){
off = vd.size/bsize*bsize;
if(seek(fd, off, 0) >= 0)
stats.skipdata += off;
else{
seek(fd, 0, 0); // paranoia
off = 0;
}
}
vdcleanup(&vddiff);
// XXX different verbose chatty prints for kaminsky?
}
}
}
if(qdiff && verbose)
fprint(2, "+%s\n", name);
while((n = readn(fd, buf, bsize)) > 0){
if(fdiff && sha1matches(f, off/bsize, (uint8_t*)buf, n)){
off += n;
stats.skipdata += n;
continue;
}
if(vacfilewrite(f, buf, n, off) < 0){
warn("venti write %s: %r", name);
goto Out;
}
stats.data += n;
off += n;
}
/*
* Since we started with fdiff's contents,
* set the size in case fdiff was bigger.
*/
if(fdiff && vacfilesetsize(f, off) < 0)
warn("vtfilesetsize %s: %r", name);
}
Out:
vacfileflush(f, 1);
vacfiledecref(f);
if(fdiff)
vacfiledecref(fdiff);
close(fd);
}
VacFile*
recentarchive(VacFs *fs, char *path)
{
VacFile *fp, *f;
VacDirEnum *de;
VacDir vd;
char buf[10];
int year, mmdd, nn, n, n1;
char *p;
fp = vacfsgetroot(fs);
de = vdeopen(fp);
year = 0;
if(de){
for(; vderead(de, &vd) > 0; vdcleanup(&vd)){
if(strlen(vd.elem) != 4)
continue;
if((n = strtol(vd.elem, &p, 10)) < 1900 || *p != 0)
continue;
if(year < n)
year = n;
}
}
vdeclose(de);
if(year == 0){
vacfiledecref(fp);
return nil;
}
snprint(buf, sizeof buf, "%04d", year);
if((f = vacfilewalk(fp, buf)) == nil){
fprint(2, "warning: dirread %s but cannot walk", buf);
vacfiledecref(fp);
return nil;
}
fp = f;
de = vdeopen(fp);
mmdd = 0;
nn = 0;
if(de){
for(; vderead(de, &vd) > 0; vdcleanup(&vd)){
if(strlen(vd.elem) < 4)
continue;
if((n = strtol(vd.elem, &p, 10)) < 100 || n > 1231 || p != vd.elem+4)
continue;
if(*p == '.'){
if(p[1] == '0' || (n1 = strtol(p+1, &p, 10)) == 0 || *p != 0)
continue;
}else{
if(*p != 0)
continue;
n1 = 0;
}
if(n < mmdd || (n == mmdd && n1 < nn))
continue;
mmdd = n;
nn = n1;
}
}
vdeclose(de);
if(mmdd == 0){
vacfiledecref(fp);
return nil;
}
if(nn == 0)
snprint(buf, sizeof buf, "%04d", mmdd);
else
snprint(buf, sizeof buf, "%04d.%d", mmdd, nn);
if((f = vacfilewalk(fp, buf)) == nil){
fprint(2, "warning: dirread %s but cannot walk", buf);
vacfiledecref(fp);
return nil;
}
vacfiledecref(fp);
sprint(path, "%04d/%s", year, buf);
return f;
}
char*
rwalk(Fid *f)
{
VacFile *file, *nfile;
Fid *nf;
int nqid, nwname;
Qid qid;
char *err = nil;
if(f->busy == 0)
return Enotexist;
nf = nil;
if(rhdr.fid != rhdr.newfid){
if(f->open)
return vtstrdup(Eisopen);
if(f->busy == 0)
return vtstrdup(Enotexist);
nf = newfid(rhdr.newfid);
if(nf->busy)
return vtstrdup(Eisopen);
nf->busy = 1;
nf->open = 0;
nf->qid = f->qid;
nf->file = vacfileincref(f->file);
nf->user = vtstrdup(f->user);
f = nf;
}
nwname = rhdr.nwname;
/* easy case */
if(nwname == 0) {
thdr.nwqid = 0;
return 0;
}
file = f->file;
vacfileincref(file);
qid = f->qid;
for(nqid = 0; nqid < nwname; nqid++){
if((qid.type & QTDIR) == 0){
err = Enotdir;
break;
}
if(!permf(file, f->user, Pexec)) {
err = Eperm;
break;
}
nfile = vacfilewalk(file, rhdr.wname[nqid]);
if(nfile == nil)
break;
vacfiledecref(file);
file = nfile;
qid.type = QTFILE;
if(vacfileisdir(file))
qid.type = QTDIR;
qid.vers = vacfilegetmcount(file);
qid.path = vacfilegetid(file);
thdr.wqid[nqid] = qid;
}
thdr.nwqid = nqid;
if(nqid == nwname){
/* success */
f->qid = thdr.wqid[nqid-1];
vacfiledecref(f->file);
f->file = file;
return 0;
}
vacfiledecref(file);
if(nf != nil)
rclunk(nf);
/* only error on the first element */
if(nqid == 0)
return vtstrdup(err);
return 0;
}
void
unvac(VacFile *f, char *name, VacDir *vdir)
{
static char buf[65536];
int fd, n, m, bsize;
ulong mode, mode9;
char *newname;
char *what;
vlong off;
Dir d, *dp;
VacDirEnum *vde;
VacDir newvdir;
VacFile *newf;
if(vdir)
mode = vdir->mode;
else
mode = vacfilegetmode(f);
if(vdir){
if(table){
if(chatty){
mode9 = vdir->mode&0777;
if(mode&ModeDir)
mode9 |= DMDIR;
if(mode&ModeAppend)
mode9 |= DMAPPEND;
if(mode&ModeExclusive)
mode9 |= DMEXCL;
print("%M %-10s %-10s %11lld %t %s\n",
mode9, vdir->uid, vdir->gid, vdir->size,
vdir->mtime, name);
}else
print("%s%s\n", name, (mode&ModeDir) ? "/" : "");
}
else if(chatty)
fprint(2, "%s%s\n", name, (mode&ModeDir) ? "/" : "");
}
if(mode&(ModeDevice|ModeLink|ModeNamedPipe|ModeExclusive)){
if(table)
return;
if(mode&ModeDevice)
what = "device";
else if(mode&ModeLink)
what = "link";
else if(mode&ModeNamedPipe)
what = "named pipe";
else if(mode&ModeExclusive)
what = "lock";
else
what = "unknown type of file";
fprint(2, "warning: ignoring %s %s\n", what, name);
return;
}
if(mode&ModeDir){
if((vde = vdeopen(f)) == nil){
fprint(2, "vdeopen %s: %r", name);
errors++;
return;
}
if(!table && !tostdout && vdir){
// create directory
if((dp = dirstat(name)) == nil){
if((fd = create(name, OREAD, DMDIR|(mode&0777))) < 0){
fprint(2, "mkdir %s: %r\n", name);
vdeclose(vde);
}
close(fd);
}else{
if(!(dp->mode&DMDIR)){
fprint(2, "%s already exists and is not a directory\n", name);
errors++;
free(dp);
vdeclose(vde);
return;
}
free(dp);
}
}
while(vderead(vde, &newvdir) > 0){
if(name == nil)
newname = newvdir.elem;
else
newname = smprint("%s/%s", name, newvdir.elem);
if(wantfile(newname)){
if((newf = vacfilewalk(f, newvdir.elem)) == nil){
fprint(2, "walk %s: %r\n", name);
errors++;
}else if(newf == f){
fprint(2, "walk loop: %s\n", newname);
vacfiledecref(newf);
}else{
unvac(newf, newname, &newvdir);
vacfiledecref(newf);
}
}
if(newname != newvdir.elem)
free(newname);
vdcleanup(&newvdir);
}
vdeclose(vde);
}else{
if(!table){
off = 0;
if(tostdout)
fd = dup(1, -1);
else if(diff && (fd = open(name, ORDWR)) >= 0){
bsize = vacfiledsize(f);
while((n = readn(fd, buf, bsize)) > 0){
if(sha1matches(f, off/bsize, (uchar*)buf, n)){
off += n;
stats.skipdata += n;
continue;
}
seek(fd, off, 0);
if((m = vacfileread(f, buf, n, off)) < 0)
break;
if(writen(fd, buf, m) != m){
fprint(2, "write %s: %r\n", name);
goto Err;
}
off += m;
stats.data += m;
if(m < n){
nulldir(&d);
d.length = off;
if(dirfwstat(fd, &d) < 0){
fprint(2, "dirfwstat %s: %r\n", name);
goto Err;
}
break;
}
}
}
else if((fd = create(name, OWRITE, mode&0777)) < 0){
fprint(2, "create %s: %r\n", name);
errors++;
return;
}
while((n = vacfileread(f, buf, sizeof buf, off)) > 0){
if(writen(fd, buf, n) != n){
fprint(2, "write %s: %r\n", name);
Err:
errors++;
close(fd);
remove(name);
return;
}
off += n;
stats.data += n;
}
close(fd);
}
}
if(vdir && settimes && !tostdout){
nulldir(&d);
d.mtime = vdir->mtime;
if(dirwstat(name, &d) < 0)
fprint(2, "warning: setting mtime on %s: %r", name);
}
}
int
vacstat(VacFile *parent, VacDir *vd, uchar *p, int np)
{
int ret;
Dir dir;
#ifdef PLAN9PORT
int n;
VacFile *vf;
uvlong size;
char *ext = nil;
#endif
memset(&dir, 0, sizeof(dir));
dir.qid.path = vd->qid + vacfilegetqidoffset(parent);
if(vd->qidspace)
dir.qid.path += vd->qidoffset;
dir.qid.vers = vd->mcount;
dir.mode = vd->mode & 0777;
if(vd->mode & ModeAppend){
dir.qid.type |= QTAPPEND;
dir.mode |= DMAPPEND;
}
if(vd->mode & ModeExclusive){
dir.qid.type |= QTEXCL;
dir.mode |= DMEXCL;
}
if(vd->mode & ModeDir){
dir.qid.type |= QTDIR;
dir.mode |= DMDIR;
}
#ifdef PLAN9PORT
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);
USED(n);
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;
}
#endif
dir.atime = vd->atime;
dir.mtime = vd->mtime;
dir.length = vd->size;
dir.name = vd->elem;
dir.uid = vd->uid;
dir.gid = vd->gid;
dir.muid = vd->mid;
ret = convD2M(&dir, p, np);
#ifdef PLAN9PORT
free(ext);
#endif
return ret;
}