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;
}
int
vacdirread(Fid *f, char *p, int32_t off, int32_t cnt)
{
int i, n, nb;
VacDir vd;
/*
* special case of rewinding a directory
* otherwise ignore the offset
*/
if(off == 0 && f->vde){
vdeclose(f->vde);
f->vde = nil;
}
if(f->vde == nil){
f->vde = vdeopen(f->file);
if(f->vde == nil)
return -1;
}
for(nb = 0; nb < cnt; nb += n) {
i = vderead(f->vde, &vd);
if(i < 0)
return -1;
if(i == 0)
break;
n = vacstat(f->file, &vd, (uint8_t*)p, cnt-nb);
if(n <= BIT16SZ) {
vdeunread(f->vde);
break;
}
vdcleanup(&vd);
p += n;
}
return nb;
}
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;
}
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);
}
}