From: Robert Pengelly <robertapengelly@hotmail.com>
Date: Sun, 31 Aug 2025 19:28:20 +0000 (+0100)
Subject: Don't forget to swap the superblock on after read
X-Git-Url: https://git.candlhat.org/?a=commitdiff_plain;h=0aa14d117d01ae4eb883bdad0b66fca97e5169bd;p=e2fsprogs.git

Don't forget to swap the superblock on after read
---

diff --git a/common.c b/common.c
index 560f16e..2322812 100644
--- a/common.c
+++ b/common.c
@@ -52,7 +52,7 @@ static void swap32_byte_array (unsigned char *arr, unsigned long n) {
 
 }
 
-static void swap_sb (struct superblock *sb) {
+void swap_sb (struct superblock *sb) {
 
     swap32 (sb->s_inodes_count);
     swap32 (sb->s_blocks_count);
diff --git a/common.h b/common.h
index d39c2ff..9dd806c 100644
--- a/common.h
+++ b/common.h
@@ -220,7 +220,9 @@ struct directory *new_dir (struct filesystem *fs, unsigned long dnod, const char
 struct directory *shrink_dir (struct dirwalker *dw, unsigned long nod, const char *name, unsigned short nlen);
 
 char *dir_name (struct dirwalker *dw);
+
 void init_bw (struct blockwalker *bw);
+void swap_sb (struct superblock *sb);
 
 void extend_inode_blk (struct filesystem *fs, struct inode_pos *ipos, unsigned char *b, signed long amount);
 void finish_fs (struct filesystem *fs);
diff --git a/e2cp.c b/e2cp.c
index a2abcf7..eaa6d45 100644
--- a/e2cp.c
+++ b/e2cp.c
@@ -797,6 +797,10 @@ int main (int argc, char **argv) {
     
     }
     
+    if (bigendian) {
+		swap_sb (&sup);
+    }
+    
     if (sup.s_magic[0] != (EXT2_SUPER_MAGIC & 0xff) || sup.s_magic[1] != ((EXT2_SUPER_MAGIC >> 8) & 0xff)) {
     
         report_at (program_name, 0, REPORT_ERROR, "'%s' has a unsupported file system", outfile);
diff --git a/e2md.c b/e2md.c
index 763567b..eb8e354 100644
--- a/e2md.c
+++ b/e2md.c
@@ -396,6 +396,10 @@ int main (int argc, char **argv) {
     
     }
     
+    if (bigendian) {
+		swap_sb (&sup);
+    }
+    
     if (sup.s_magic[0] != (EXT2_SUPER_MAGIC & 0xff) || sup.s_magic[1] != ((EXT2_SUPER_MAGIC >> 8) & 0xff)) {
     
         report_at (program_name, 0, REPORT_ERROR, "'%s' has a unsupported file system", outfile);