From aed35c78c6a51a4b4c37ebda5643d2246842fb74 Mon Sep 17 00:00:00 2001
From: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
Date: Fri, 8 Jul 2022 17:08:34 +0200
Subject: Fix: libfstree: actually use a full 32 bit hard link counter
The squashfs on-disk format uses 32 bit link counters, but the fstree
used 16 bit ones. Because the link count also includes child nodes,
this artificially limited the number of entries in a directory to ~64k
files.
This patch removes the limit by switching libfstree to 32 bit counters.
Reported-by: Marvin Renich <mrvn@renich.org>
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
---
lib/fstree/hardlink.c | 2 +-
lib/fstree/mknode.c | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
(limited to 'lib')
diff --git a/lib/fstree/hardlink.c b/lib/fstree/hardlink.c
index 11ab566..f45acf7 100644
--- a/lib/fstree/hardlink.c
+++ b/lib/fstree/hardlink.c
@@ -62,7 +62,7 @@ int fstree_resolve_hard_link(fstree_t *fs, tree_node_t *node)
return -1;
}
- if (node->link_count == 0x0FFFF) {
+ if (node->link_count == 0xFFFFFFFF) {
errno = EMLINK;
return -1;
}
diff --git a/lib/fstree/mknode.c b/lib/fstree/mknode.c
index 11026f6..2b1f89d 100644
--- a/lib/fstree/mknode.c
+++ b/lib/fstree/mknode.c
@@ -88,7 +88,7 @@ tree_node_t *fstree_mknode(tree_node_t *parent, const char *name,
}
if (parent != NULL) {
- if (parent->link_count == 0x0FFFF) {
+ if (parent->link_count == 0xFFFFFFFF) {
free(n);
errno = EMLINK;
return NULL;
--
cgit v1.2.3