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https://github.com/9fans/plan9port.git
synced 2025-01-12 11:10:07 +00:00
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2 changed files with 1010 additions and 0 deletions
696
src/cmd/venti/srv/hdisk.c
Normal file
696
src/cmd/venti/srv/hdisk.c
Normal file
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@ -0,0 +1,696 @@
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#include "stdinc.h"
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#include "dat.h"
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#include "fns.h"
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#include "whack.h"
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static int disksummary(HConnect*);
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static int diskarenapart(HConnect*, char*, Part*);
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static int diskbloom(HConnect*, char*, Part*);
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static int diskisect(HConnect*, char*, Part*);
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int
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hdisk(HConnect *c)
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{
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char *disk, *type;
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Part *p;
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int ret;
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if(hsethtml(c) < 0)
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return -1;
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disk = hargstr(c, "disk", "");
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if(!disk[0])
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return disksummary(c);
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if((p = initpart(disk, OREAD)) == nil){
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hprint(&c->hout, "open %s: %r", disk);
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return 0;
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}
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type = hargstr(c, "type", "");
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switch(type[0]){
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case 'a':
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ret = diskarenapart(c, disk, p);
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break;
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case 'b':
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ret = diskbloom(c, disk, p);
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break;
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case 'i':
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ret = diskisect(c, disk, p);
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break;
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default:
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hprint(&c->hout, "unknown disk type %s", type);
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return 0;
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}
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freepart(p);
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return ret;
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}
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static int
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disksummary(HConnect *c)
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{
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int i;
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Index *ix;
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Part *p;
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hprint(&c->hout, "<h1>venti disks</h1>\n");
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hprint(&c->hout, "<pre>\n");
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ix = mainindex;
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p = nil;
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for(i=0; i<ix->narenas; i++){
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if(ix->arenas[i]->part == p)
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continue;
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p = ix->arenas[i]->part;
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hprint(&c->hout, "<a href=\"/disk?disk=%s&type=a\">%s</a> %s\n", p->name, p->name, ix->arenas[i]->name);
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}
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hprint(&c->hout, "\n");
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p = nil;
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for(i=0; i<ix->nsects; i++){
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if(ix->sects[i]->part == p)
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continue;
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p = ix->sects[i]->part;
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hprint(&c->hout, "<a href=\"/disk?disk=%s&type=i\">%s</a> %s\n", p->name, p->name, ix->sects[i]->name);
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}
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hprint(&c->hout, "\n");
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if(ix->bloom){
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p = ix->bloom->part;
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hprint(&c->hout, "<a href=\"/disk?disk=%s&type=b\">%s</a> %s\n", p->name, p->name, "bloom filter");
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}
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return 0;
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}
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static char*
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readap(Part *p, ArenaPart *ap)
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{
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uchar *blk;
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char *table;
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blk = vtmalloc(8192);
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if(readpart(p, PartBlank, blk, 8192) != 8192)
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return nil;
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if(unpackarenapart(ap, blk) < 0){
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werrstr("corrupt arena part header: %r");
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return nil;
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}
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vtfree(blk);
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ap->tabbase = (PartBlank+HeadSize+ap->blocksize-1)&~(ap->blocksize-1);
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ap->tabsize = ap->arenabase - ap->tabbase;
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table = vtmalloc(ap->tabsize+1);
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if(readpart(p, ap->tabbase, (uchar*)table, ap->tabsize) != ap->tabsize){
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werrstr("reading arena part directory: %r");
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return nil;
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}
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table[ap->tabsize] = 0;
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return table;
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}
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static int
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xfindarena(char *table, char *name, vlong *start, vlong *end)
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{
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int i, nline;
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char *p, *q, *f[4], line[256];
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nline = atoi(table);
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p = strchr(table, '\n');
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if(p)
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p++;
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for(i=0; i<nline; i++){
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if(p == nil)
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break;
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q = strchr(p, '\n');
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if(q)
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*q++ = 0;
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if(strlen(p) >= sizeof line){
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p = q;
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continue;
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}
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strcpy(line, p);
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memset(f, 0, sizeof f);
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if(tokenize(line, f, nelem(f)) < 3){
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p = q;
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continue;
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}
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if(strcmp(f[0], name) == 0){
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*start = strtoull(f[1], 0, 0);
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*end = strtoull(f[2], 0, 0);
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return 0;
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}
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p = q;
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}
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return -1;
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}
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static void
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diskarenatable(HConnect *c, char *disk, char *table)
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{
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char *p, *q;
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int i, nline;
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char *f[4], line[256], base[256];
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hprint(&c->hout, "<h2>table</h2>\n");
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hprint(&c->hout, "<pre>\n");
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nline = atoi(table);
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snprint(base, sizeof base, "/disk?disk=%s&type=a", disk);
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p = strchr(table, '\n');
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if(p)
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p++;
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for(i=0; i<nline; i++){
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if(p == nil){
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hprint(&c->hout, "<b><i>unexpected end of table</i></b>\n");
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break;
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}
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q = strchr(p, '\n');
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if(q)
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*q++ = 0;
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if(strlen(p) >= sizeof line){
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hprint(&c->hout, "%s\n", p);
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p = q;
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continue;
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}
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strcpy(line, p);
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memset(f, 0, sizeof f);
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if(tokenize(line, f, 3) < 3){
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hprint(&c->hout, "%s\n", p);
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p = q;
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continue;
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}
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p = q;
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hprint(&c->hout, "<a href=\"%s&arena=%s\">%s</a> %s %s\n",
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base, f[0], f[0], f[1], f[2]);
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}
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hprint(&c->hout, "</pre>\n");
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}
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static char*
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fmttime(char *buf, ulong time)
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{
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strcpy(buf, ctime(time));
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buf[28] = 0;
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return buf;
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}
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static int diskarenaclump(HConnect*, Arena*, vlong, char*);
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static int diskarenatoc(HConnect*, Arena*);
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static int
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diskarenapart(HConnect *c, char *disk, Part *p)
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{
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char *arenaname;
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ArenaPart ap;
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ArenaHead head;
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Arena arena;
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char *table;
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char *score;
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char *clump;
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uchar *blk;
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vlong start, end, off;
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char tbuf[60];
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hprint(&c->hout, "<h1>arena partition %s</h1>\n", disk);
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if((table = readap(p, &ap)) == nil){
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hprint(&c->hout, "%r\n");
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goto out;
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}
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hprint(&c->hout, "<pre>\n");
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hprint(&c->hout, "version=%d blocksize=%d base=%d\n",
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ap.version, ap.blocksize, ap.arenabase);
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hprint(&c->hout, "</pre>\n");
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arenaname = hargstr(c, "arena", "");
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if(arenaname[0] == 0){
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diskarenatable(c, disk, table);
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goto out;
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}
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if(xfindarena(table, arenaname, &start, &end) < 0){
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hprint(&c->hout, "no such arena %s\n", arenaname);
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goto out;
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}
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hprint(&c->hout, "<h2>arena %s</h2>\n", arenaname);
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hprint(&c->hout, "<pre>start=%#llx end=%#llx<pre>\n", start, end);
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if(end < start || end - start < HeadSize){
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hprint(&c->hout, "bad size %#llx\n", end - start);
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goto out;
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}
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// read arena header, tail
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blk = vtmalloc(HeadSize);
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if(readpart(p, start, blk, HeadSize) != HeadSize){
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hprint(&c->hout, "reading header: %r\n");
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vtfree(blk);
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goto out;
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}
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if(unpackarenahead(&head, blk) < 0){
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hprint(&c->hout, "corrupt arena header: %r\n");
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// hhex(blk, HeadSize);
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vtfree(blk);
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goto out;
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}
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vtfree(blk);
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hprint(&c->hout, "head:\n<pre>\n");
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hprint(&c->hout, "version=%d name=%s blocksize=%d size=%#llx clumpmagic=%#ux\n",
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head.version, head.name, head.blocksize, head.size,
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head.clumpmagic);
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hprint(&c->hout, "</pre><br><br>\n");
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if(head.blocksize > MaxIoSize || head.blocksize >= end - start){
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hprint(&c->hout, "corrupt block size %d\n", head.blocksize);
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goto out;
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}
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blk = vtmalloc(head.blocksize);
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if(readpart(p, end - head.blocksize, blk, head.blocksize) < 0){
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hprint(&c->hout, "reading tail: %r\n");
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vtfree(blk);
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goto out;
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}
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memset(&arena, 0, sizeof arena);
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arena.part = p;
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arena.blocksize = head.blocksize;
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arena.clumpmax = head.blocksize / ClumpInfoSize;
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arena.base = start + head.blocksize;
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arena.size = end - start - 2 * head.blocksize;
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if(unpackarena(&arena, blk) < 0){
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vtfree(blk);
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goto out;
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}
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scorecp(arena.score, blk+head.blocksize - VtScoreSize);
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vtfree(blk);
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hprint(&c->hout, "tail:\n<pre>\n");
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hprint(&c->hout, "version=%d name=%s\n", arena.version, arena.name);
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hprint(&c->hout, "ctime=%d %s\n", arena.ctime, fmttime(tbuf, arena.ctime));
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hprint(&c->hout, "wtime=%d %s\n", arena.wtime, fmttime(tbuf, arena.wtime));
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hprint(&c->hout, "clumpmagic=%#ux\n", arena.clumpmagic);
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hprint(&c->hout, "score %V\n", arena.score);
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hprint(&c->hout, "diskstats:\n");
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hprint(&c->hout, "\tclumps=%,d cclumps=%,d used=%,lld uncsize=%,lld sealed=%d\n",
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arena.diskstats.clumps, arena.diskstats.cclumps,
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arena.diskstats.used, arena.diskstats.uncsize,
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arena.diskstats.sealed);
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hprint(&c->hout, "memstats:\n");
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hprint(&c->hout, "\tclumps=%,d cclumps=%,d used=%,lld uncsize=%,lld sealed=%d\n",
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arena.memstats.clumps, arena.memstats.cclumps,
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arena.memstats.used, arena.memstats.uncsize,
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arena.memstats.sealed);
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if(arena.clumpmax == 0){
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hprint(&c->hout, "bad clumpmax\n");
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goto out;
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}
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||||
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score = hargstr(c, "score", "");
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clump = hargstr(c, "clump", "");
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||||
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if(clump[0]){
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||||
off = strtoull(clump, 0, 0);
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diskarenaclump(c, &arena, off, score[0] ? score : nil);
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||||
}else if(score[0]){
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diskarenaclump(c, &arena, -1, score);
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||||
}else{
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||||
diskarenatoc(c, &arena);
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}
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||||
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out:
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free(table);
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return 0;
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}
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||||
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static vlong
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findintoc(HConnect *c, Arena *arena, uchar *score)
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||||
{
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||||
uchar *blk;
|
||||
int i;
|
||||
vlong off;
|
||||
vlong coff;
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||||
ClumpInfo ci;
|
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blk = vtmalloc(arena->blocksize);
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off = arena->base + arena->size;
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coff = 0;
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for(i=0; i<arena->memstats.clumps; i++){
|
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if(i%arena->clumpmax == 0){
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off -= arena->blocksize;
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if(readpart(arena->part, off, blk, arena->blocksize) != arena->blocksize){
|
||||
if(c)
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hprint(&c->hout, "<i>clump info directory at %#llx: %r</i>\n<br>\n",
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off);
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break;
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}
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||||
}
|
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unpackclumpinfo(&ci, blk+(i%arena->clumpmax)*ClumpInfoSize);
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||||
if(scorecmp(ci.score, score) == 0){
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||||
vtfree(blk);
|
||||
return coff;
|
||||
}
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coff += ClumpSize + ci.size;
|
||||
}
|
||||
vtfree(blk);
|
||||
return -1;
|
||||
}
|
||||
|
||||
|
||||
static int
|
||||
diskarenatoc(HConnect *c, Arena *arena)
|
||||
{
|
||||
uchar *blk;
|
||||
int i;
|
||||
vlong off;
|
||||
vlong coff;
|
||||
ClumpInfo ci;
|
||||
char base[512];
|
||||
int cib;
|
||||
|
||||
snprint(base, sizeof base, "/disk?disk=%s&type=a&arena=%s",
|
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arena->part->name, arena->name);
|
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|
||||
blk = vtmalloc(arena->blocksize);
|
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off = arena->base + arena->size;
|
||||
hprint(&c->hout, "<h2>table of contents</h2>\n");
|
||||
hprint(&c->hout, "<pre>\n");
|
||||
hprint(&c->hout, "%5s %6s %7s %s\n", "type", "size", "uncsize", "score");
|
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coff = 0;
|
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cib = hargint(c, "cib", 0);
|
||||
|
||||
for(i=0; i<arena->memstats.clumps; i++){
|
||||
if(i%arena->clumpmax == 0){
|
||||
off -= arena->blocksize;
|
||||
if(readpart(arena->part, off, blk, arena->blocksize) != arena->blocksize){
|
||||
hprint(&c->hout, "<i>clump info directory at %#llx: %r</i>\n<br>\n",
|
||||
off);
|
||||
i += arena->clumpmax-1;
|
||||
coff = -1;
|
||||
continue;
|
||||
}
|
||||
}
|
||||
unpackclumpinfo(&ci, blk+(i%arena->clumpmax)*ClumpInfoSize);
|
||||
if(i/arena->clumpmax == cib || i%arena->clumpmax == 0){
|
||||
hprint(&c->hout, "%5d %6d %7d %V",
|
||||
ci.type, ci.size, ci.uncsize, ci.score);
|
||||
if(coff >= 0)
|
||||
hprint(&c->hout, " at <a href=\"%s&clump=%#llx&score=%V\">%#llx</a>",
|
||||
base, coff, ci.score, coff);
|
||||
if(i/arena->clumpmax != cib)
|
||||
hprint(&c->hout, " <font size=-1><a href=\"%s&cib=%d\">more</a></font>", base, i/arena->clumpmax);
|
||||
hprint(&c->hout, "\n");
|
||||
}
|
||||
if(coff >= 0)
|
||||
coff += ClumpSize + ci.size;
|
||||
}
|
||||
hprint(&c->hout, "</pre>\n");
|
||||
return 0;
|
||||
}
|
||||
|
||||
#define U32GET(p) ((u32int)(((p)[0]<<24)|((p)[1]<<16)|((p)[2]<<8)|(p)[3]))
|
||||
static int
|
||||
diskarenaclump(HConnect *c, Arena *arena, vlong off, char *scorestr)
|
||||
{
|
||||
uchar *blk, *blk2;
|
||||
Clump cl;
|
||||
char err[ERRMAX];
|
||||
uchar xscore[VtScoreSize], score[VtScoreSize];
|
||||
Unwhack uw;
|
||||
int n;
|
||||
|
||||
if(scorestr){
|
||||
if(vtparsescore(scorestr, nil, score) < 0){
|
||||
hprint(&c->hout, "bad score %s: %r\n", scorestr);
|
||||
return -1;
|
||||
}
|
||||
if(off < 0){
|
||||
off = findintoc(c, arena, score);
|
||||
if(off < 0){
|
||||
hprint(&c->hout, "score %V not found in arena %s\n", score, arena->name);
|
||||
return -1;
|
||||
}
|
||||
hprint(&c->hout, "score %V at %#llx\n", score, off);
|
||||
}
|
||||
}else
|
||||
memset(score, 0, sizeof score);
|
||||
|
||||
if(off < 0){
|
||||
hprint(&c->hout, "bad offset %#llx\n", off);
|
||||
return -1;
|
||||
}
|
||||
|
||||
off += arena->base;
|
||||
|
||||
blk = vtmalloc(ClumpSize + VtMaxLumpSize);
|
||||
if(readpart(arena->part, off, blk, ClumpSize + VtMaxLumpSize) != ClumpSize + VtMaxLumpSize){
|
||||
hprint(&c->hout, "reading at %#llx: %r\n", off);
|
||||
vtfree(blk);
|
||||
return -1;
|
||||
}
|
||||
|
||||
if(unpackclump(&cl, blk, arena->clumpmagic) < 0){
|
||||
hprint(&c->hout, "unpackclump: %r\n<br>");
|
||||
rerrstr(err, sizeof err);
|
||||
if(strstr(err, "magic")){
|
||||
hprint(&c->hout, "trying again with magic=%#ux<br>\n", U32GET(blk));
|
||||
if(unpackclump(&cl, blk, U32GET(blk)) < 0){
|
||||
hprint(&c->hout, "unpackclump: %r\n<br>\n");
|
||||
goto error;
|
||||
}
|
||||
}else
|
||||
goto error;
|
||||
}
|
||||
|
||||
hprint(&c->hout, "<pre>type=%d size=%d uncsize=%d score=%V\n", cl.info.type, cl.info.size, cl.info.uncsize, cl.info.score);
|
||||
hprint(&c->hout, "encoding=%d creator=%d time=%d %s</pre>\n", cl.encoding, cl.creator, cl.time, fmttime(err, cl.time));
|
||||
|
||||
if(cl.info.type == VtCorruptType)
|
||||
hprint(&c->hout, "clump is marked corrupt<br>\n");
|
||||
|
||||
if(cl.info.size >= VtMaxLumpSize){
|
||||
hprint(&c->hout, "clump too big\n");
|
||||
goto error;
|
||||
}
|
||||
|
||||
switch(cl.encoding){
|
||||
case ClumpECompress:
|
||||
blk2 = vtmalloc(VtMaxLumpSize);
|
||||
unwhackinit(&uw);
|
||||
n = unwhack(&uw, blk2, cl.info.uncsize, blk+ClumpSize, cl.info.size);
|
||||
if(n < 0){
|
||||
hprint(&c->hout, "decompression failed\n");
|
||||
vtfree(blk2);
|
||||
goto error;
|
||||
}
|
||||
if(n != cl.info.uncsize){
|
||||
hprint(&c->hout, "got wrong amount: %d wanted %d\n", n, cl.info.uncsize);
|
||||
// hhex(blk2, n);
|
||||
vtfree(blk2);
|
||||
goto error;
|
||||
}
|
||||
scoremem(xscore, blk2, cl.info.uncsize);
|
||||
vtfree(blk2);
|
||||
break;
|
||||
case ClumpENone:
|
||||
scoremem(xscore, blk+ClumpSize, cl.info.size);
|
||||
break;
|
||||
}
|
||||
|
||||
hprint(&c->hout, "score=%V<br>\n", xscore);
|
||||
if(scorestr && scorecmp(score, xscore) != 0)
|
||||
hprint(&c->hout, "score does NOT match expected %V\n", score);
|
||||
|
||||
vtfree(blk);
|
||||
return 0;
|
||||
|
||||
error:
|
||||
// hhex(blk, ClumpSize + VtMaxLumpSize);
|
||||
vtfree(blk);
|
||||
return -1;
|
||||
}
|
||||
|
||||
static int
|
||||
diskbloom(HConnect *c, char *disk, Part *p)
|
||||
{
|
||||
USED(c);
|
||||
USED(disk);
|
||||
USED(p);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int
|
||||
diskisect(HConnect *c, char *disk, Part *p)
|
||||
{
|
||||
USED(c);
|
||||
USED(disk);
|
||||
USED(p);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void
|
||||
debugamap(HConnect *c)
|
||||
{
|
||||
int i;
|
||||
AMap *amap;
|
||||
|
||||
hprint(&c->hout, "<h2>arena map</h2>\n");
|
||||
hprint(&c->hout, "<pre>\n");
|
||||
|
||||
amap = mainindex->amap;
|
||||
for(i=0; i<mainindex->narenas; i++)
|
||||
hprint(&c->hout, "%s %#llx %#llx\n",
|
||||
amap[i].name, amap[i].start, amap[i].stop);
|
||||
}
|
||||
|
||||
static void
|
||||
debugread(HConnect *c, u8int *score)
|
||||
{
|
||||
int type;
|
||||
Lump *u;
|
||||
IAddr ia;
|
||||
IEntry ie;
|
||||
int i, rac;
|
||||
Arena *arena;
|
||||
u64int aa;
|
||||
ZBlock *zb;
|
||||
Clump cl;
|
||||
vlong off;
|
||||
u8int sc[VtScoreSize];
|
||||
|
||||
if(scorecmp(score, zeroscore) == 0){
|
||||
hprint(&c->hout, "zero score\n");
|
||||
return;
|
||||
}
|
||||
|
||||
hprint(&c->hout, "<h2>index search %V</h2><pre>\n", score);
|
||||
if(_lookupscore(score, -1, &ia, nil) < 0)
|
||||
hprint(&c->hout, " icache: not found\n");
|
||||
else
|
||||
hprint(&c->hout, " icache: addr=%#llx size=%d type=%d blocks=%d\n",
|
||||
ia.addr, ia.size, ia.type, ia.blocks);
|
||||
|
||||
if(loadientry(mainindex, score, -1, &ie) < 0)
|
||||
hprint(&c->hout, " idisk: not found\n");
|
||||
else
|
||||
hprint(&c->hout, " idisk: addr=%#llx size=%d type=%d blocks=%d\n",
|
||||
ie.ia.addr, ie.ia.size, ie.ia.type, ie.ia.blocks);
|
||||
|
||||
hprint(&c->hout, "</pre><h2>lookup %V</h2>\n", score);
|
||||
hprint(&c->hout, "<pre>\n");
|
||||
|
||||
for(type=0; type < VtMaxType; type++){
|
||||
hprint(&c->hout, "%V type %d:", score, type);
|
||||
u = lookuplump(score, type);
|
||||
if(u->data != nil)
|
||||
hprint(&c->hout, " +cache");
|
||||
else
|
||||
hprint(&c->hout, " -cache");
|
||||
putlump(u);
|
||||
|
||||
if(lookupscore(score, type, &ia, &rac) < 0){
|
||||
hprint(&c->hout, " -lookup\n");
|
||||
continue;
|
||||
}
|
||||
hprint(&c->hout, "\n lookupscore: addr=%#llx size=%d blocks=%d rac=%d\n",
|
||||
ia.addr, ia.size, ia.blocks, rac);
|
||||
|
||||
arena = amapitoa(mainindex, ia.addr, &aa);
|
||||
if(arena == nil){
|
||||
hprint(&c->hout, " amapitoa failed: %r\n");
|
||||
continue;
|
||||
}
|
||||
|
||||
hprint(&c->hout, " amapitoa: aa=%#llx arena="
|
||||
"<a href=\"/disk?disk=%s&type=a&arena=%s&score=%V\">%s</a>\n",
|
||||
aa, arena->part->name, arena->name, score, arena->name);
|
||||
zb = loadclump(arena, aa, ia.blocks, &cl, sc, 1);
|
||||
if(zb == nil){
|
||||
hprint(&c->hout, " loadclump failed: %r\n");
|
||||
continue;
|
||||
}
|
||||
|
||||
hprint(&c->hout, " loadclump: uncsize=%d type=%d score=%V\n",
|
||||
cl.info.uncsize, cl.info.type, sc);
|
||||
if(ia.size != cl.info.uncsize || ia.type != cl.info.type || scorecmp(score, sc) != 0){
|
||||
hprint(&c->hout, " clump info mismatch\n");
|
||||
continue;
|
||||
}
|
||||
}
|
||||
|
||||
if(hargstr(c, "brute", "")[0] == 'y'){
|
||||
hprint(&c->hout, "</pre>\n");
|
||||
hprint(&c->hout, "<h2>brute force arena search %V</h2>\n", score);
|
||||
hprint(&c->hout, "<pre>\n");
|
||||
|
||||
for(i=0; i<mainindex->narenas; i++){
|
||||
arena = mainindex->arenas[i];
|
||||
hprint(&c->hout, "%s...\n", arena->name);
|
||||
hflush(&c->hout);
|
||||
off = findintoc(nil, arena, score);
|
||||
if(off >= 0)
|
||||
hprint(&c->hout, "%s %#llx (%#llx)\n", arena->name, off, mainindex->amap[i].start + off);
|
||||
}
|
||||
}
|
||||
|
||||
hprint(&c->hout, "</pre>\n");
|
||||
}
|
||||
|
||||
static void
|
||||
debugmem(HConnect *c)
|
||||
{
|
||||
Index *ix;
|
||||
|
||||
ix = mainindex;
|
||||
hprint(&c->hout, "<h2>memory</h2>\n");
|
||||
|
||||
hprint(&c->hout, "<pre>\n");
|
||||
hprint(&c->hout, "ix=%p\n", ix);
|
||||
hprint(&c->hout, "\tarenas=%p\n", ix->arenas);
|
||||
if(ix->narenas > 0)
|
||||
hprint(&c->hout, "\tarenas[...] = %p...%p\n", ix->arenas[0], ix->arenas[ix->narenas-1]);
|
||||
hprint(&c->hout, "\tsmap=%p\n", ix->smap);
|
||||
hprint(&c->hout, "\tamap=%p\n", ix->amap);
|
||||
hprint(&c->hout, "\tbloom=%p\n", ix->bloom);
|
||||
hprint(&c->hout, "\tbloom->data=%p\n", ix->bloom ? ix->bloom->data : nil);
|
||||
hprint(&c->hout, "\tisects=%p\n", ix->sects);
|
||||
if(ix->nsects > 0)
|
||||
hprint(&c->hout, "\tsects[...] = %p...%p\n", ix->sects[0], ix->sects[ix->nsects-1]);
|
||||
}
|
||||
|
||||
int
|
||||
hdebug(HConnect *c)
|
||||
{
|
||||
char *scorestr, *op;
|
||||
u8int score[VtScoreSize];
|
||||
|
||||
if(hsethtml(c) < 0)
|
||||
return -1;
|
||||
hprint(&c->hout, "<h1>venti debug</h1>\n");
|
||||
|
||||
op = hargstr(c, "op", "");
|
||||
if(!op[0]){
|
||||
hprint(&c->hout, "no op\n");
|
||||
return 0;
|
||||
}
|
||||
|
||||
if(strcmp(op, "amap") == 0){
|
||||
debugamap(c);
|
||||
return 0;
|
||||
}
|
||||
|
||||
if(strcmp(op, "mem") == 0){
|
||||
debugmem(c);
|
||||
return 0;
|
||||
}
|
||||
|
||||
if(strcmp(op, "read") == 0){
|
||||
scorestr = hargstr(c, "score", "");
|
||||
if(vtparsescore(scorestr, nil, score) < 0){
|
||||
hprint(&c->hout, "bad score %s: %r\n", scorestr);
|
||||
return 0;
|
||||
}
|
||||
debugread(c, score);
|
||||
return 0;
|
||||
}
|
||||
|
||||
hprint(&c->hout, "unknown op %s", op);
|
||||
return 0;
|
||||
}
|
||||
314
src/cmd/venti/srv/reseal.c
Normal file
314
src/cmd/venti/srv/reseal.c
Normal file
|
|
@ -0,0 +1,314 @@
|
|||
#include "stdinc.h"
|
||||
#include "dat.h"
|
||||
#include "fns.h"
|
||||
|
||||
static int verbose;
|
||||
static int fd;
|
||||
static uchar *data;
|
||||
static uchar *data1;
|
||||
static int blocksize;
|
||||
static int sleepms;
|
||||
|
||||
void
|
||||
usage(void)
|
||||
{
|
||||
fprint(2, "usage: reseal [-b blocksize] [-s ms] [-v] arenapart1 [name...]]\n");
|
||||
threadexitsall(0);
|
||||
}
|
||||
|
||||
static int
|
||||
pwriteblock(int fd, uchar *buf, int n, vlong off)
|
||||
{
|
||||
int nr, m;
|
||||
|
||||
for(nr = 0; nr < n; nr += m){
|
||||
m = n - nr;
|
||||
m = pwrite(fd, &buf[nr], m, off+nr);
|
||||
if(m <= 0)
|
||||
return -1;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int
|
||||
preadblock(int fd, uchar *buf, int n, vlong off)
|
||||
{
|
||||
int nr, m;
|
||||
|
||||
for(nr = 0; nr < n; nr += m){
|
||||
m = n - nr;
|
||||
m = pread(fd, &buf[nr], m, off+nr);
|
||||
if(m <= 0){
|
||||
if(m == 0)
|
||||
werrstr("early eof");
|
||||
return -1;
|
||||
}
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int
|
||||
readblock(int fd, uchar *buf, int n)
|
||||
{
|
||||
int nr, m;
|
||||
|
||||
for(nr = 0; nr < n; nr += m){
|
||||
m = n - nr;
|
||||
m = read(fd, &buf[nr], m);
|
||||
if(m <= 0){
|
||||
if(m == 0)
|
||||
werrstr("early eof");
|
||||
return -1;
|
||||
}
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int
|
||||
loadheader(char *name, ArenaHead *head, Arena *arena, int fd, vlong off)
|
||||
{
|
||||
if(preadblock(fd, data, head->blocksize, off + head->size - head->blocksize) < 0){
|
||||
fprint(2, "%s: reading arena tail: %r\n", name);
|
||||
return -1;
|
||||
}
|
||||
|
||||
memset(arena, 0, sizeof *arena);
|
||||
if(unpackarena(arena, data) < 0){
|
||||
fprint(2, "%s: unpack arena tail: %r\n", name);
|
||||
return -1;
|
||||
}
|
||||
arena->blocksize = head->blocksize;
|
||||
arena->base = off + head->blocksize;
|
||||
arena->clumpmax = arena->blocksize / ClumpInfoSize;
|
||||
arena->size = head->size - 2*head->blocksize;
|
||||
|
||||
if(arena->diskstats.sealed)
|
||||
scorecp(arena->score, data + head->blocksize - VtScoreSize);
|
||||
return 0;
|
||||
}
|
||||
|
||||
uchar zero[VtScoreSize];
|
||||
|
||||
static int
|
||||
verify(int fd, Arena *arena, void *data, uchar *newscore)
|
||||
{
|
||||
vlong e, bs, n, o;
|
||||
DigestState ds, ds1;
|
||||
uchar score[VtScoreSize];
|
||||
|
||||
/*
|
||||
* now we know how much to read
|
||||
* read everything but the last block, which is special
|
||||
*/
|
||||
e = arena->size + arena->blocksize;
|
||||
o = arena->base - arena->blocksize;
|
||||
bs = arena->blocksize;
|
||||
memset(&ds, 0, sizeof ds);
|
||||
for(n = 0; n < e; n += bs){
|
||||
if(preadblock(fd, data, bs, o + n) < 0){
|
||||
werrstr("read: %r");
|
||||
return -1;
|
||||
}
|
||||
if(n + bs > e)
|
||||
bs = e - n;
|
||||
sha1(data, bs, nil, &ds);
|
||||
}
|
||||
|
||||
/* last block */
|
||||
if(preadblock(fd, data, arena->blocksize, o + e) < 0){
|
||||
werrstr("read: %r");
|
||||
return -1;
|
||||
}
|
||||
ds1 = ds;
|
||||
sha1(data, bs - VtScoreSize, nil, &ds);
|
||||
sha1(zero, VtScoreSize, score, &ds);
|
||||
if(scorecmp(score, arena->score) != 0){
|
||||
werrstr("score mismatch: %V != %V", score, arena->score);
|
||||
return -1;
|
||||
}
|
||||
|
||||
/* prepare new last block */
|
||||
memset(data, 0, arena->blocksize);
|
||||
packarena(arena, data);
|
||||
sha1(data, bs, newscore, &ds1);
|
||||
scorecp((uchar*)data + arena->blocksize - VtScoreSize, newscore);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void
|
||||
resealarena(char *name, vlong len)
|
||||
{
|
||||
ArenaHead head;
|
||||
Arena arena;
|
||||
DigestState s;
|
||||
u64int off;
|
||||
uchar newscore[VtScoreSize];
|
||||
|
||||
fprint(2, "%s: begin reseal\n", name);
|
||||
|
||||
memset(&s, 0, sizeof s);
|
||||
|
||||
off = seek(fd, 0, 1);
|
||||
|
||||
/*
|
||||
* read a little bit, which will include the header
|
||||
*/
|
||||
if(preadblock(fd, data, HeadSize, off) < 0){
|
||||
fprint(2, "%s: reading header: %r\n", name);
|
||||
return;
|
||||
}
|
||||
if(unpackarenahead(&head, data) < 0){
|
||||
fprint(2, "%s: corrupt arena header: %r\n", name);
|
||||
return;
|
||||
}
|
||||
if(head.version != ArenaVersion4 && head.version != ArenaVersion5)
|
||||
fprint(2, "%s: warning: unknown arena version %d\n", name, head.version);
|
||||
if(len != 0 && len != head.size)
|
||||
fprint(2, "%s: warning: unexpected length %lld != %lld\n", name, head.size, len);
|
||||
if(strcmp(name, "<stdin>") != 0 && strcmp(head.name, name) != 0)
|
||||
fprint(2, "%s: warning: unexpected name %s\n", name, head.name);
|
||||
|
||||
if(loadheader(name, &head, &arena, fd, off) < 0)
|
||||
return;
|
||||
|
||||
if(!arena.diskstats.sealed){
|
||||
fprint(2, "%s: not sealed\n", name);
|
||||
return;
|
||||
}
|
||||
|
||||
if(verify(fd, &arena, data, newscore) < 0){
|
||||
fprint(2, "%s: failed to verify before reseal: %r\n", name);
|
||||
return;
|
||||
}
|
||||
fprint(2, "%s: verified: %V\n", name, arena.score);
|
||||
|
||||
if(pwriteblock(fd, data, arena.blocksize, arena.base + arena.size) < 0){
|
||||
fprint(2, "%s: writing new tail: %r\n", name);
|
||||
return;
|
||||
}
|
||||
scorecp(arena.score, newscore);
|
||||
fprint(2, "%s: resealed: %V\n", name, newscore);
|
||||
|
||||
if(verify(fd, &arena, data, newscore) < 0){
|
||||
fprint(2, "%s: failed to verify after reseal!: %r\n", name);
|
||||
return;
|
||||
}
|
||||
|
||||
fprint(2, "%s: verified: %V\n", name, newscore);
|
||||
}
|
||||
|
||||
static int
|
||||
shouldcheck(char *name, char **s, int n)
|
||||
{
|
||||
int i;
|
||||
|
||||
if(n == 0)
|
||||
return 1;
|
||||
|
||||
for(i=0; i<n; i++){
|
||||
if(s[i] && strcmp(name, s[i]) == 0){
|
||||
s[i] = nil;
|
||||
return 1;
|
||||
}
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
char *
|
||||
readap(int fd, ArenaPart *ap)
|
||||
{
|
||||
char *table;
|
||||
|
||||
if(preadblock(fd, data, 8192, PartBlank) < 0)
|
||||
sysfatal("read arena part header: %r");
|
||||
if(unpackarenapart(ap, data) < 0)
|
||||
sysfatal("corrupted arena part header: %r");
|
||||
fprint(2, "# arena part version=%d blocksize=%d arenabase=%d\n",
|
||||
ap->version, ap->blocksize, ap->arenabase);
|
||||
ap->tabbase = (PartBlank+HeadSize+ap->blocksize-1)&~(ap->blocksize-1);
|
||||
ap->tabsize = ap->arenabase - ap->tabbase;
|
||||
table = malloc(ap->tabsize+1);
|
||||
if(preadblock(fd, (uchar*)table, ap->tabsize, ap->tabbase) < 0)
|
||||
sysfatal("reading arena part directory: %r");
|
||||
table[ap->tabsize] = 0;
|
||||
return table;
|
||||
}
|
||||
|
||||
void
|
||||
threadmain(int argc, char *argv[])
|
||||
{
|
||||
int i, nline;
|
||||
char *p, *q, *table, *f[10], line[256];
|
||||
vlong start, stop;
|
||||
ArenaPart ap;
|
||||
|
||||
ventifmtinstall();
|
||||
blocksize = MaxIoSize;
|
||||
ARGBEGIN{
|
||||
case 'b':
|
||||
blocksize = unittoull(EARGF(usage()));
|
||||
break;
|
||||
case 's':
|
||||
sleepms = atoi(EARGF(usage()));
|
||||
break;
|
||||
case 'v':
|
||||
verbose++;
|
||||
break;
|
||||
default:
|
||||
usage();
|
||||
break;
|
||||
}ARGEND
|
||||
|
||||
if(argc < 2)
|
||||
usage();
|
||||
|
||||
data = vtmalloc(blocksize);
|
||||
if((fd = open(argv[0], ORDWR)) < 0)
|
||||
sysfatal("open %s: %r", argv[0]);
|
||||
|
||||
table = readap(fd, &ap);
|
||||
|
||||
nline = atoi(table);
|
||||
p = strchr(table, '\n');
|
||||
if(p)
|
||||
p++;
|
||||
for(i=0; i<nline; i++){
|
||||
if(p == nil){
|
||||
fprint(2, "warning: unexpected arena table end\n");
|
||||
break;
|
||||
}
|
||||
q = strchr(p, '\n');
|
||||
if(q)
|
||||
*q++ = 0;
|
||||
if(strlen(p) >= sizeof line){
|
||||
fprint(2, "warning: long arena table line: %s\n", p);
|
||||
p = q;
|
||||
continue;
|
||||
}
|
||||
strcpy(line, p);
|
||||
memset(f, 0, sizeof f);
|
||||
if(tokenize(line, f, nelem(f)) < 3){
|
||||
fprint(2, "warning: bad arena table line: %s\n", p);
|
||||
p = q;
|
||||
continue;
|
||||
}
|
||||
p = q;
|
||||
if(shouldcheck(f[0], argv+1, argc-1)){
|
||||
start = strtoull(f[1], 0, 0);
|
||||
stop = strtoull(f[2], 0, 0);
|
||||
if(stop <= start){
|
||||
fprint(2, "%s: bad start,stop %lld,%lld\n", f[0], stop, start);
|
||||
continue;
|
||||
}
|
||||
if(seek(fd, start, 0) < 0)
|
||||
fprint(2, "%s: seek to start: %r\n", f[0]);
|
||||
resealarena(f[0], stop - start);
|
||||
}
|
||||
}
|
||||
for(i=2; i<argc; i++)
|
||||
if(argv[i] != 0)
|
||||
fprint(2, "%s: did not find arena\n", argv[i]);
|
||||
|
||||
threadexitsall(nil);
|
||||
}
|
||||
Loading…
Reference in a new issue