Improve sparse file handling when printing the block list for an inode by

not bailing out early when a hole is encountered in the direct block list.
Print NULL block pointers in the direct block list.  Simplify the
code that prints the fragment count.

Match the style of the existing code.

Reviewed by:	mckusick
MFC after:	1 week

1 files changed, 6 insertions, 7 deletions

diff --git a/sbin/fsdb/fsdbutil.c b/sbin/fsdb/fsdbutil.c
index 7ed78a7..f434677 100644
--- a/sbin/fsdb/fsdbutil.c
+++ b/sbin/fsdb/fsdbutil.c
@@ -293,22 +293,21 @@ printblocks(ino_t inum, union dinode *dp)
     printf("Blocks for inode %d:\n", inum);
     printf("Direct blocks:\n");
     ndb = howmany(DIP(dp, di_size), sblock.fs_bsize);
-    for (i = 0; i < NDADDR; i++) {
-	if (DIP(dp, di_db[i]) == 0) {
-	    putchar('\n');
-	    return;
-	}
+    for (i = 0; i < NDADDR && i < ndb; i++) {
 	if (i > 0)
 	    printf(", ");
 	blkno = DIP(dp, di_db[i]);
 	printf("%jd", (intmax_t)blkno);
-	if (--ndb == 0 && (offset = blkoff(&sblock, DIP(dp, di_size))) != 0) {
+    }
+    if (ndb <= NDADDR) {
+	offset = blkoff(&sblock, DIP(dp, di_size));
+	if (offset != 0) {
 	    nfrags = numfrags(&sblock, fragroundup(&sblock, offset));
 	    printf(" (%d frag%s)", nfrags, nfrags > 1? "s": "");
 	}
     }
     putchar('\n');
-    if (ndb == 0)
+    if (ndb <= NDADDR)
 	return;
 
     bufp = malloc((unsigned int)sblock.fs_bsize);