8 int mainstacksize = 128*1024;
10 typedef struct Sink Sink;
11 typedef struct MetaSink MetaSink;
12 typedef struct DirSink DirSink;
18 uchar *pbuf[VtPointerDepth+1];
26 uchar *p; /* current pointer */
27 uchar *ep; /* end pointer */
35 uchar *rp; /* start of current record */
36 uchar *p; /* current pointer */
37 uchar *ep; /* end pointer */
40 static void usage(void);
41 static int strpcmp(const void*, const void*);
42 static void warn(char *fmt, ...);
43 static void cleanup(void);
44 static u64int unittoull(char *s);
45 static void vac(VtConn *z, char *argv[]);
46 static void vacfile(DirSink *dsink, char *lname, char *sname, VacFile*);
47 static void vacstdin(DirSink *dsink, char *name, VacFile *vf);
48 static void vacdata(DirSink *dsink, int fd, char *lname, VacFile*, Dir*);
49 static void vacdir(DirSink *dsink, int fd, char *lname, char *sname, VacFile*);
50 static int vacmerge(DirSink *dsink, char *lname, char *sname);
51 static int vacspecial(DirSink *dsink, Dir *dir, char *lname, char *sname, VacFile *vf);
52 Sink *sinkalloc(VtConn *z, int psize, int dsize);
53 void sinkwrite(Sink *k, uchar *data, int n);
54 void sinkwritescore(Sink *k, uchar *score, int n);
55 void sinkclose(Sink *k);
56 void sinkfree(Sink *k);
58 DirSink *dirsinkalloc(VtConn *z, int psize, int dsize);
59 void dirsinkwrite(DirSink *k, VtEntry*);
60 void dirsinkwritesink(DirSink *k, Sink*);
61 int dirsinkwritefile(DirSink *k, VacFile *vf);
62 void dirsinkclose(DirSink *k);
63 void dirsinkfree(DirSink *k);
65 MetaSink *metasinkalloc(VtConn *z, int psize, int dsize);
66 void metasinkputc(MetaSink *k, int c);
67 void metasinkputstring(MetaSink *k, char *s);
68 void metasinkputuint32(MetaSink *k, ulong x);
69 void metasinkputuint64(MetaSink *k, uvlong x);
70 void metasinkwrite(MetaSink *k, uchar *data, int n);
71 void metasinkwritedir(MetaSink *ms, VacDir *vd);
72 void metasinkeor(MetaSink *k);
73 void metasinkclose(MetaSink *k);
74 void metasinkfree(MetaSink *k);
75 void plan9tovacdir(VacDir*, Dir*, ulong entry, uvlong qid);
92 int bsize = BlockSize;
98 char *exclude[MaxExclude];
107 fprint(2, "usage: %s [-amqsv] [-h host] [-d vacfile] [-b blocksize] [-i name] [-e exclude] [-f vacfile] file ... \n", argv0);
108 threadexitsall("usage");
112 threadmain(int argc, char *argv[])
128 bsize = unittoull(p);
138 if(nexclude >= MaxExclude)
139 sysfatal("too many exclusions\n");
140 exclude[nexclude] = ARGF();
141 if(exclude[nexclude] == nil)
182 if(bsize > VtMaxLumpSize)
183 bsize = VtMaxLumpSize;
186 fmtinstall('V', vtscorefmt);
190 sysfatal("could not connect to server: %r");
193 sysfatal("vtconnect: %r");
195 qsort(exclude, nexclude, sizeof(char*), strpcmp);
200 fprint(2, "warning: could not ask server to flush pending writes: %r\n");
203 fprint(2, "files %ld:%ld data %ld:%ld:%ld meta %ld\n", stats.file, stats.sfile,
204 stats.data, stats.skip, stats.sdata, stats.meta);
212 strpcmp(const void *p0, const void *p1)
214 return strcmp(*(char**)p0, *(char**)p1);
218 vacwrite(VtConn *z, uchar score[VtScoreSize], int type, uchar *buf, int n)
222 sha1(buf, n, score, nil);
225 return vtwrite(z, score, type, buf, n);
229 lastelem(char *oname)
235 if((p = strrchr(oname, '/')) == nil)
241 vac(VtConn *z, char *argv[])
246 uchar score[VtScoreSize], buf[VtRootSize];
256 if(getwd(cwd, sizeof(cwd)) == 0)
257 sysfatal("can't find current directory: %r\n");
259 dsink = dirsinkalloc(z, bsize, bsize);
263 fs = vacfsopen(z, dfile, VtOREAD, 1000);
265 fprint(2, "could not open diff: %s: %r\n", dfile);
270 fd = create(oname, OWRITE, 0666);
272 sysfatal("could not create file: %s: %r", oname);
278 sysfatal("dirfstat failed: %r");
280 dir->name = lastelem(oname);
284 for(; *argv; argv++) {
287 for (cp = *argv; *cp; cp++)
299 vff = vacfileopen(fs, cp2);
300 vacfile(dsink, argv[0], cp2, vff);
303 if(cd && chdir(cwd) < 0)
304 sysfatal("can't cd back to %s: %r\n", cwd);
310 vff = vacfileopen(fs, isi);
311 vacstdin(dsink, isi, vff);
318 /* build meta information for the root */
319 ms = metasinkalloc(z, bsize, bsize);
320 /* fake into a directory */
321 dir->mode = DMDIR|0555;
322 dir->qid.type |= QTDIR;
323 plan9tovacdir(&vd, dir, 0, fileid++);
324 if(strcmp(vd.elem, "/") == 0){
326 vd.elem = vtstrdup("root");
328 metasinkwritedir(ms, &vd);
332 ds = dirsinkalloc(z, bsize, bsize);
333 dirsinkwritesink(ds, dsink->sink);
334 dirsinkwritesink(ds, dsink->msink->sink);
335 dirsinkwritesink(ds, ms->sink);
338 memset(&root, 0, sizeof(root));
339 strncpy(root.name, dir->name, sizeof(root.name));
340 root.name[sizeof(root.name)-1] = 0;
342 sprint(root.type, "vac");
343 memmove(root.score, ds->sink->dir.score, VtScoreSize);
344 root.blocksize = maxbsize;
346 vacfsgetscore(fs, root.prev);
354 vtrootpack(&root, buf);
355 if(vacwrite(z, score, VtRootType, buf, VtRootSize) < 0)
356 sysfatal("vacWrite failed: %r");
358 fprint(fd, "vac:%V\n", score);
360 /* avoid remove at cleanup */
365 isexcluded(char *name)
373 x = strcmp(exclude[i], name);
385 vacfile(DirSink *dsink, char *lname, char *sname, VacFile *vf)
392 if(isexcluded(lname)) {
393 warn("excluding: %s", lname);
397 if(merge && vacmerge(dsink, lname, sname) >= 0)
400 if((dir = dirstat(sname)) == nil){
401 warn("could not stat file %s: %r", lname);
404 if(dir->mode&(DMSYMLINK|DMDEVICE|DMNAMEDPIPE)){
405 vacspecial(dsink, dir, lname, sname, vf);
408 }else if(dir->mode&DMSOCKET){
414 fd = open(sname, OREAD);
416 warn("could not open file: %s: %r", lname);
421 fprint(2, "%s\n", lname);
425 warn("can't stat %s: %r", lname);
429 dir->name = lastelem(sname);
431 entry = dsink->nentry;
433 if(dir->mode & DMDIR)
434 vacdir(dsink, fd, lname, sname, vf);
436 vacdata(dsink, fd, lname, vf, dir);
438 plan9tovacdir(&vd, dir, entry, fileid++);
439 metasinkwritedir(dsink->msink, &vd);
447 vacstdin(DirSink *dsink, char *name, VacFile *vf)
454 fprint(2, "%s\n", "<stdio>");
458 warn("can't stat <stdio>: %r");
463 entry = dsink->nentry;
465 vacdata(dsink, 0, "<stdin>", vf, dir);
467 plan9tovacdir(&vd, dir, entry, fileid++);
468 vd.elem = vtstrdup(name);
469 metasinkwritedir(dsink->msink, &vd);
476 sha1check(u8int *score, uchar *buf, int n)
478 uchar score2[VtScoreSize];
480 sha1(buf, n, score2, nil);
481 if(memcmp(score, score2, VtScoreSize) == 0)
487 vacdataskip(Sink *sink, VacFile *vf, int fd, ulong blocks, uchar *buf, char *lname)
491 uchar score[VtScoreSize];
493 /* skip blocks for append only files */
494 if(seek(fd, (blocks-1)*bsize, 0) != (blocks-1)*bsize) {
495 warn("error seeking: %s", lname);
498 n = readn(fd, buf, bsize);
500 warn("error checking append only file: %s", lname);
503 if(vacfileblockscore(vf, blocks-1, score)<0 || sha1check(score, buf, n)<0) {
504 warn("last block of append file did not match: %s", lname);
508 for(i=0; i<blocks; i++) {
509 if(vacfileblockscore(vf, i, score) < 0) {
510 warn("could not get score: %s: %lud", lname, i);
511 seek(fd, i*bsize, 0);
515 sinkwritescore(sink, score, bsize);
525 vacdata(DirSink *dsink, int fd, char *lname, VacFile *vf, Dir *dir)
530 uchar score[VtScoreSize];
536 if(vf != nil && qdiff) {
537 vacfilegetdir(vf, &vd);
538 if(vd.mtime == dir->mtime)
539 if(vd.size == dir->length)
540 if(!vd.plan9 || /* vd.p9path == dir->qid.path && */ vd.p9version == dir->qid.vers)
541 if(dirsinkwritefile(dsink, vf)) {
547 /* look for an append only file */
548 if((dir->mode&DMAPPEND) != 0)
549 if(vd.size < dir->length)
551 if(vd.p9path == dir->qid.path)
552 vfblocks = vd.size/bsize;
558 buf = vtmalloc(bsize);
559 sink = sinkalloc(dsink->sink->z, bsize, bsize);
561 same = stats.sdata+stats.skip;
564 block += vacdataskip(sink, vf, fd, vfblocks, buf, lname);
566 if(0) fprint(2, "vacData: %s: %ld\n", lname, block);
568 n = readn(fd, buf, bsize);
570 warn("file truncated due to read error: %s: %r", lname);
573 if(vf != nil && vacfileblockscore(vf, block, score)>=0 && sha1check(score, buf, n)>=0) {
575 sinkwritescore(sink, score, n);
577 sinkwrite(sink, buf, n);
580 same = stats.sdata+stats.skip - same;
582 if(same && (dir->mode&DMAPPEND) != 0)
583 if(0)fprint(2, "%s: total %lud same %lud:%lud diff %lud\n",
584 lname, block, same, vfblocks, block-same);
587 dirsinkwritesink(dsink, sink);
594 vacdir(DirSink *dsink, int fd, char *lname, char *sname, VacFile *vf)
603 ds = dirsinkalloc(dsink->sink->z, bsize, bsize);
604 while((nd = dirread(fd, &dirs)) > 0){
605 for(i = 0; i < nd; i++){
607 /* check for bad file names */
608 if(name[0] == 0 || strcmp(name, ".") == 0 || strcmp(name, "..") == 0)
610 ln = vtmalloc(strlen(lname) + strlen(name) + 2);
611 sn = vtmalloc(strlen(sname) + strlen(name) + 2);
619 vvf = vacfilewalk(vf, name);
622 vacfile(ds, ln, sn, vvf);
631 dirsinkwritesink(dsink, ds->sink);
632 dirsinkwritesink(dsink, ds->msink->sink);
637 vacmergefile(DirSink *dsink, VacFile *vf, VacDir *dir, uvlong offset, uvlong *max)
639 uchar buf[VtEntrySize];
643 if(vacfileread(vf, buf, VtEntrySize, (uvlong)dir->entry*VtEntrySize) != VtEntrySize) {
644 warn("could not read venti dir entry: %s\n", dir->elem);
647 vtentryunpack(&dd, buf, 0);
649 if(dir->mode & ModeDir) {
654 if(vacfileread(vf, buf, VtEntrySize, e*VtEntrySize) != VtEntrySize) {
655 warn("could not read venti dir entry: %s\n", dir->elem);
658 vtentryunpack(&md, buf, 0);
661 /* max might incorrect in some old dumps */
662 if(dir->qid >= *max) {
663 warn("qid out of range: %s", dir->elem);
668 dir->entry = dsink->nentry;
671 dir->qidoffset += offset;
674 dir->qidoffset = offset;
678 dirsinkwrite(dsink, &dd);
679 if(dir->mode & ModeDir)
680 dirsinkwrite(dsink, &md);
681 metasinkwritedir(dsink->msink, dir);
687 vacmerge(DirSink *dsink, char *lname, char *sname)
696 if((p=strrchr(sname, '.')) == nil || strcmp(p, ".vac") != 0)
700 fs = vacfsopen(dsink->sink->z, sname, VtOREAD, 100);
704 vf = vacfileopen(fs, "/");
707 max = vacfilegetid(vf);
713 fprint(2, "merging: %s\n", lname);
715 if(maxbsize < fs->bsize)
716 maxbsize = fs->bsize;
719 if(vderead(d, &dir) < 1)
721 vacmergefile(dsink, vf, &dir, fileid, &max);
736 vacspecial(DirSink *dsink, Dir* dir, char *lname, char *sname, VacFile *vf)
739 int buflen, dtype, major, minor, n;
746 buf = malloc(buflen);
751 fprint(2, "%s\n", lname);
753 dir->name = lastelem(sname);
755 if(dir->mode & DMSYMLINK){
756 while((n = readlink(sname, buf, buflen)) == buflen){
758 btmp = vtrealloc(buf, buflen);
766 dir->mode |= DMSYMLINK;
767 }else if(dir->mode & DMDEVICE){
768 dtype = (dir->qid.path >> 16) & 0xFF;
769 minor = dir->qid.path & 0xff;
770 major = (dir->qid.path >> 8) & 0xFF;
771 n = snprint(buf, buflen, "%c %d %d", dtype, major, minor);
774 entry = dsink->nentry;
776 sink = sinkalloc(dsink->sink->z, bsize, bsize);
777 sinkwrite(sink, (uchar*)buf, n);
779 dirsinkwritesink(dsink, sink);
783 dir->name = lastelem(sname);
785 plan9tovacdir(&vd, dir, entry, fileid++);
786 metasinkwritedir(dsink->msink, &vd);
794 sinkalloc(VtConn *z, int psize, int dsize)
799 if(psize < 512 || psize > VtMaxLumpSize)
800 sysfatal("sinkalloc: bad psize");
801 if(dsize < 512 || dsize > VtMaxLumpSize)
802 sysfatal("sinkalloc: bad psize");
804 psize = VtScoreSize*(psize/VtScoreSize);
806 k = vtmallocz(sizeof(Sink));
808 k->dir.flags = VtEntryActive;
809 k->dir.psize = psize;
810 k->dir.dsize = dsize;
811 k->buf = vtmallocz(VtPointerDepth*k->dir.psize + VtScoreSize);
812 for(i=0; i<=VtPointerDepth; i++)
813 k->pbuf[i] = k->buf + i*k->dir.psize;
818 sinkwritescore(Sink *k, uchar score[VtScoreSize], int n)
824 memmove(k->pbuf[0], score, VtScoreSize);
828 for(i=0; i<VtPointerDepth; i++) {
829 k->pbuf[i] += VtScoreSize;
830 if(k->pbuf[i] < k->buf + d->psize*(i+1))
832 if(i == VtPointerDepth-1)
833 sysfatal("file too big");
834 p = k->buf+i*d->psize;
836 if(vacwrite(k->z, k->pbuf[i+1], VtDataType+1+i, p, d->psize) < 0)
837 sysfatal("vacwrite failed: %r");
841 /* round size up to multiple of dsize */
842 d->size = d->dsize * ((d->size + d->dsize-1)/d->dsize);
848 sinkwrite(Sink *k, uchar *p, int n)
851 uchar score[VtScoreSize];
857 sysfatal("sinkWrite: size too big");
859 if((k->dir.type&~VtTypeDepthMask) == VtDirType){
866 if(vacwrite(k->z, score, type, p, n) < 0)
867 sysfatal("vacWrite failed: %r");
869 sinkwritescore(k, score, n);
873 sizetodepth(uvlong s, int psize, int dsize)
878 /* determine pointer depth */
879 np = psize/VtScoreSize;
880 s = (s + dsize - 1)/dsize;
881 for(d = 0; s > 1; d++)
897 memmove(kd->score, vtzeroscore, VtScoreSize);
901 for(n=VtPointerDepth-1; n>0; n--)
902 if(k->pbuf[n] > k->buf + kd->psize*n)
905 base = kd->type&~VtTypeDepthMask;
906 kd->type = base + sizetodepth(kd->size, kd->psize, kd->dsize);
908 /* skip full part of tree */
909 for(i=0; i<n && k->pbuf[i] == k->buf + kd->psize*i; i++)
912 /* is the tree completely full */
913 if(i == n && k->pbuf[n] == k->buf + kd->psize*n + VtScoreSize) {
914 memmove(kd->score, k->pbuf[n] - VtScoreSize, VtScoreSize);
919 /* clean up the edge */
921 p = k->buf+i*kd->psize;
923 if(vacwrite(k->z, k->pbuf[i+1], base+1+i, p, k->pbuf[i]-p) < 0)
924 sysfatal("vacWrite failed: %r");
925 k->pbuf[i+1] += VtScoreSize;
927 memmove(kd->score, k->pbuf[i] - VtScoreSize, VtScoreSize);
938 dirsinkalloc(VtConn *z, int psize, int dsize)
943 ds = VtEntrySize*(dsize/VtEntrySize);
945 k = vtmallocz(sizeof(DirSink));
946 k->sink = sinkalloc(z, psize, ds);
947 k->sink->dir.type = VtDirType;
948 k->msink = metasinkalloc(z, psize, dsize);
949 k->buf = vtmalloc(ds);
956 dirsinkwrite(DirSink *k, VtEntry *dir)
958 if(k->p + VtEntrySize > k->ep) {
959 sinkwrite(k->sink, k->buf, k->p - k->buf);
962 vtentrypack(dir, k->p, 0);
968 dirsinkwritesink(DirSink *k, Sink *sink)
970 dirsinkwrite(k, &sink->dir);
974 dirsinkwritefile(DirSink *k, VacFile *vf)
978 if(vacfilegetvtentry(vf, &dir) < 0)
980 dirsinkwrite(k, &dir);
985 dirsinkclose(DirSink *k)
987 metasinkclose(k->msink);
989 sinkwrite(k->sink, k->buf, k->p - k->buf);
994 dirsinkfree(DirSink *k)
997 metasinkfree(k->msink);
1003 metasinkalloc(VtConn *z, int psize, int dsize)
1007 k = vtmallocz(sizeof(MetaSink));
1008 k->sink = sinkalloc(z, psize, dsize);
1009 k->buf = vtmalloc(dsize);
1010 k->maxindex = dsize/100; /* 100 byte entries seems reasonable */
1013 k->rp = k->p = k->buf + MetaHeaderSize + k->maxindex*MetaIndexSize;
1014 k->ep = k->buf + dsize;
1018 /* hack to get base to compare routine - not reentrant */
1022 dircmp(const void *p0, const void *p1)
1027 /* name is first element of entry */
1029 q0 = blockbase + (q0[0]<<8) + q0[1];
1030 n0 = (q0[6]<<8) + q0[7];
1034 q1 = blockbase + (q1[0]<<8) + q1[1];
1035 n1 = (q1[6]<<8) + q1[7];
1039 return memcmp(q0, q1, n0);
1041 r = memcmp(q0, q1, n0);
1044 r = memcmp(q0, q1, n1);
1050 metasinkflush(MetaSink *k)
1058 assert(k->nindex <= k->maxindex);
1065 mb.nindex = k->nindex;
1066 mb.maxindex = k->maxindex;
1070 p += MetaHeaderSize;
1072 /* XXX this is not reentrant! */
1074 qsort(p, k->nindex, MetaIndexSize, dircmp);
1075 p += k->nindex*MetaIndexSize;
1077 memset(p, 0, (k->maxindex-k->nindex)*MetaIndexSize);
1078 p += (k->maxindex-k->nindex)*MetaIndexSize;
1080 sinkwrite(k->sink, k->buf, n);
1082 /* move down partial entry */
1084 memmove(p, k->rp, n);
1091 metasinkputc(MetaSink *k, int c)
1096 sysfatal("directory entry too large");
1102 metasinkputstring(MetaSink *k, char *s)
1105 metasinkputc(k, n>>8);
1107 metasinkwrite(k, (uchar*)s, n);
1111 metasinkputuint32(MetaSink *k, ulong x)
1113 metasinkputc(k, x>>24);
1114 metasinkputc(k, x>>16);
1115 metasinkputc(k, x>>8);
1120 metasinkputuint64(MetaSink *k, uvlong x)
1122 metasinkputuint32(k, x>>32);
1123 metasinkputuint32(k, x);
1127 metasinkwrite(MetaSink *k, uchar *data, int n)
1129 if(k->p + n > k->ep)
1131 if(k->p + n > k->ep)
1132 sysfatal("directory entry too large");
1134 memmove(k->p, data, n);
1139 metasinkwritedir(MetaSink *ms, VacDir *dir)
1141 metasinkputuint32(ms, DirMagic);
1142 metasinkputc(ms, Version>>8);
1143 metasinkputc(ms, Version);
1144 metasinkputstring(ms, dir->elem);
1145 metasinkputuint32(ms, dir->entry);
1146 metasinkputuint64(ms, dir->qid);
1147 metasinkputstring(ms, dir->uid);
1148 metasinkputstring(ms, dir->gid);
1149 metasinkputstring(ms, dir->mid);
1150 metasinkputuint32(ms, dir->mtime);
1151 metasinkputuint32(ms, dir->mcount);
1152 metasinkputuint32(ms, dir->ctime);
1153 metasinkputuint32(ms, dir->atime);
1154 metasinkputuint32(ms, dir->mode);
1157 metasinkputc(ms, DirPlan9Entry); /* plan9 extra info */
1158 metasinkputc(ms, 0); /* plan9 extra size */
1159 metasinkputc(ms, 12); /* plan9 extra size */
1160 metasinkputuint64(ms, dir->p9path);
1161 metasinkputuint32(ms, dir->p9version);
1164 if(dir->qidspace != 0) {
1165 metasinkputc(ms, DirQidSpaceEntry);
1166 metasinkputc(ms, 0);
1167 metasinkputc(ms, 16);
1168 metasinkputuint64(ms, dir->qidoffset);
1169 metasinkputuint64(ms, dir->qidmax);
1173 metasinkputc(ms, DirGenEntry);
1174 metasinkputc(ms, 0);
1175 metasinkputc(ms, 4);
1176 metasinkputuint32(ms, dir->gen);
1184 plan9tovacdir(VacDir *vd, Dir *dir, ulong entry, uvlong qid)
1186 memset(vd, 0, sizeof(VacDir));
1188 vd->elem = vtstrdup(dir->name);
1191 vd->uid = vtstrdup(dir->uid);
1192 vd->gid = vtstrdup(dir->gid);
1193 vd->mid = vtstrdup(dir->muid);
1194 vd->mtime = dir->mtime;
1196 vd->ctime = dir->mtime; /* ctime: not available on plan 9 */
1197 vd->atime = dir->atime;
1199 vd->mode = dir->mode & 0777;
1200 if(dir->mode & DMDIR)
1201 vd->mode |= ModeDir;
1202 if(dir->mode & DMAPPEND)
1203 vd->mode |= ModeAppend;
1204 if(dir->mode & DMEXCL)
1205 vd->mode |= ModeExclusive;
1206 if(dir->mode & DMDEVICE)
1207 vd->mode |= ModeDevice;
1208 if(dir->mode & DMNAMEDPIPE)
1209 vd->mode |= ModeNamedPipe;
1210 if(dir->mode & DMSYMLINK)
1211 vd->mode |= ModeLink;
1214 vd->p9path = dir->qid.path;
1215 vd->p9version = dir->qid.vers;
1220 metasinkeor(MetaSink *k)
1225 p = k->buf + MetaHeaderSize;
1226 p += k->nindex * MetaIndexSize;
1227 o = k->rp-k->buf; /* offset from start of block */
1228 n = k->p-k->rp; /* size of entry */
1235 if(k->nindex == k->maxindex)
1240 metasinkclose(MetaSink *k)
1247 metasinkfree(MetaSink *k)
1255 warn(char *fmt, ...)
1260 fprint(2, "%s: ", argv0);
1261 vfprint(2, fmt, arg);
1273 #define TWID64 ((u64int)~(u64int)0)
1283 n = strtoul(s, &es, 0);
1284 if(*es == 'k' || *es == 'K'){
1287 }else if(*es == 'm' || *es == 'M'){
1290 }else if(*es == 'g' || *es == 'G'){
1291 n *= 1024*1024*1024;