From a0d146edd7a7de6236a0d60baafeeb59f8452aae Mon Sep 17 00:00:00 2001
From: rsc <devnull@localhost>
Date: Tue, 12 Jul 2005 15:23:36 +0000
Subject: return of venti

---
 src/cmd/venti/srv/printindex.c | 99 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 99 insertions(+)
 create mode 100644 src/cmd/venti/srv/printindex.c

(limited to 'src/cmd/venti/srv/printindex.c')

diff --git a/src/cmd/venti/srv/printindex.c b/src/cmd/venti/srv/printindex.c
new file mode 100644
index 00000000..edbcf793
--- /dev/null
+++ b/src/cmd/venti/srv/printindex.c
@@ -0,0 +1,99 @@
+#include "stdinc.h"
+#include "dat.h"
+#include "fns.h"
+#include <bio.h>
+
+Biobuf bout;
+
+static void
+pie(IEntry *ie)
+{
+	Bprint(&bout, "%22lld %V %3d %5d\n",
+		ie->ia.addr, ie->score, ie->ia.type, ie->ia.size);
+}
+
+void
+usage(void)
+{
+	fprint(2, "usage: printindex [-B blockcachesize] config [isectname...]\n");
+	threadexitsall(0);
+}
+
+Config conf;
+
+int
+shoulddump(char *name, int argc, char **argv)
+{
+	int i;
+
+	if(argc == 0)
+		return 1;
+	for(i=0; i<argc; i++)
+		if(strcmp(name, argv[i]) == 0)
+			return 1;
+	return 0;
+}
+
+void
+dumpisect(ISect *is)
+{
+	int j;
+	uchar *buf;
+	u32int i;
+	u64int off;
+	IBucket ib;
+	IEntry ie;
+
+	buf = emalloc(is->blocksize);
+	for(i=0; i<is->blocks; i++){
+		off = is->blockbase+(u64int)is->blocksize*i;
+		if(readpart(is->part, off, buf, is->blocksize) < 0)
+			fprint(2, "read %s at 0x%llux: %r\n", is->part->name, off);
+		else{
+			unpackibucket(&ib, buf, is->bucketmagic);
+			for(j=0; j<ib.n; j++){
+				unpackientry(&ie, &ib.data[j*IEntrySize]);
+				pie(&ie);
+			}
+		}
+	}
+}
+
+void
+threadmain(int argc, char *argv[])
+{
+	int i;
+	Index *ix;
+	u32int bcmem;
+
+	bcmem = 0;
+	ARGBEGIN{
+	case 'B':
+		bcmem = unittoull(ARGF());
+		break;
+	default:
+		usage();
+		break;
+	}ARGEND
+
+	if(argc < 1)
+		usage();
+
+	fmtinstall('H', encodefmt);
+
+	if(initventi(argv[0], &conf) < 0)
+		sysfatal("can't init venti: %r");
+
+	if(bcmem < maxblocksize * (mainindex->narenas + mainindex->nsects * 4 + 16))
+		bcmem = maxblocksize * (mainindex->narenas + mainindex->nsects * 4 + 16);
+	if(0) fprint(2, "initialize %d bytes of disk block cache\n", bcmem);
+	initdcache(bcmem);
+
+	ix = mainindex;
+	Binit(&bout, 1, OWRITE);
+	for(i=0; i<ix->nsects; i++)
+		if(shoulddump(ix->sects[i]->name, argc-1, argv+1))
+			dumpisect(ix->sects[i]);
+	Bterm(&bout);
+	threadexitsall(0);
+}
-- 
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