[LTP] [PATCH v2] inode01: Use uint64_t to prevent inode truncation on 32-bit

[Wake Liu]

On 32-bit architectures, ino_t is typically 32-bit, whereas the kernel
and struct stat may support 64-bit inode numbers (e.g. st_ino is
unsigned long long).

The conversion of inode01 to the new API introduced tracking of inodes
in an array of struct inode_info, which used ino_t. This causes 64-bit
inode numbers to be truncated to 32-bit when running as a 32-bit binary
on a filesystem that uses 64-bit inodes.

This truncation can lead to false duplicate inode reports and test
failures.

Fix this by using uint64_t for tracking inode numbers throughout the
test.

Signed-off-by: Wake Liu <wakel@google.com>
---
v1 -> v2:
 - Also change record_inode() parameter type to uint64_t to prevent truncation before assignment.

 testcases/kernel/fs/inode/inode01.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/testcases/kernel/fs/inode/inode01.c b/testcases/kernel/fs/inode/inode01.c
index 2816ad61a..50b5311a4 100644
--- a/testcases/kernel/fs/inode/inode01.c
+++ b/testcases/kernel/fs/inode/inode01.c
@@ -36,7 +36,7 @@ static struct tcase {
 };
 
 struct inode_info {
-	ino_t ino;
+	uint64_t ino;
 	char path[PATH_MAX];
 };
 
@@ -68,13 +68,13 @@ static void create_tree(const struct tcase *tc, const char *parent,
 }
 
 static void record_inode(struct inode_info *inodes, unsigned int idx,
-			 const char *path, ino_t ino)
+			 const char *path, uint64_t ino)
 {
 	inodes[idx].ino = ino;
 	snprintf(inodes[idx].path, sizeof(inodes[idx].path), "%s", path);
 }
 
-static ino_t verify_file(const struct tcase *tc, const char *path)
+static uint64_t verify_file(const struct tcase *tc, const char *path)
 {
 	char buf[PATH_MAX];
 	char extra;
@@ -128,7 +128,7 @@ static void verify_tree(const struct tcase *tc, const char *parent,
 	for (i = 0; i < tc->fanout; i++, create_file = !create_file) {
 		char path[PATH_MAX];
 		unsigned int my_id;
-		ino_t ino;
+		uint64_t ino;
 
 		snprintf(path, sizeof(path), "%s/%08u", parent, ++*id);
 
-- 
2.55.0.654.g21b8a5bc05-goog