dedup

commit d44390527612ca94178f33bd6ce15d999c7cd220
parent 705d45cf7f4bf7006081d44dc0a6439ec90dcede
Author: sin <sin@2f30.org>
Date:   Wed, 21 Mar 2018 17:33:20 +0000

Use fstat to get the size of the file

Diffstat:
M
dedup.c
 | 
14
+++++++++++---

1 file changed, 11 insertions(+), 3 deletions(-)
diff --git a/dedup.c b/dedup.c
@@ -232,13 +232,21 @@ grow_ent(struct ent *ent, uint64_t nblks)
 uint64_t
 storefile_nblks(void)
 {
-	return lseek(sfd, 0, SEEK_END) / sizeof(struct blk);
+	struct stat sb;
+
+	if (fstat(sfd, &sb) == -1)
+		err(1, "fstat");
+	return sb.st_size /  sizeof(struct blk);
 }
 
 uint64_t
 cachefile_nblks(void)
 {
-	return lseek(cfd, 0, SEEK_END) / sizeof(struct cache_data);
+	struct stat sb;
+
+	if (fstat(cfd, &sb) == -1)
+		err(1, "fstat");
+	return sb.st_size /  sizeof(struct cache_data);
 }
 
 void
@@ -495,7 +503,7 @@ init(void)
 		err(1, "open %s", CACHEF);
 
 	if (fstat(ifd, &sb) == -1)
-		err(1, "stat %s", INDEXF);
+		err(1, "fstat %s", INDEXF);
 	if (sb.st_size != 0)
 		xread(ifd, &enthdr, sizeof(enthdr));