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-rw-r--r--toys/posix/tar.c17
1 files changed, 5 insertions, 12 deletions
diff --git a/toys/posix/tar.c b/toys/posix/tar.c
index d3680ad2..e513424e 100644
--- a/toys/posix/tar.c
+++ b/toys/posix/tar.c
@@ -313,20 +313,13 @@ static int add_to_tar(struct dirtree *node)
TT.sparse[TT.sparselen++] = ld;
len += TT.sparse[TT.sparselen++] = lo-ld;
}
- if (lo == st->st_size) {
- if (TT.sparselen<=2) TT.sparselen = 0;
- else {
- // Gratuitous extra entry for compatibility with other versions
- TT.sparse[TT.sparselen++] = lo;
- TT.sparse[TT.sparselen++] = 0;
- }
- break;
- }
- if ((ld = lseek(fd, lo, SEEK_DATA)) < lo) ld = st->st_size;
+ if (lo == st->st_size || (ld = lseek(fd, lo, SEEK_DATA)) < lo) break;
}
// If there were extents, change type to S record
- if (TT.sparselen) {
+ if (TT.sparselen>2) {
+ TT.sparse[TT.sparselen++] = st->st_size;
+ TT.sparse[TT.sparselen++] = 0;
hdr.type = 'S';
lnk = (char *)&hdr;
for (i = 0; i<TT.sparselen && i<8; i++)
@@ -337,7 +330,7 @@ static int add_to_tar(struct dirtree *node)
if (TT.sparselen>8) lnk[482] = 1;
itoo(lnk+483, 12, st->st_size);
ITOO(hdr.size, len);
- }
+ } else TT.sparselen = 0;
lseek(fd, 0, SEEK_SET);
}
}