[PATCH] erofs-utils: lib: fix tarerofs 32-bit overflows

[Gao Xiang]

Otherwise, large files won't be imported properly.

Fixes: e3dfe4b8db26 ("erofs-utils: mkfs: support tgz streams for tarerofs")
Fixes: 95d315fd7958 ("erofs-utils: introduce tarerofs")
Signed-off-by: Gao Xiang <hsiang...@linux.alibaba.com>
---
 lib/tar.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/lib/tar.c b/lib/tar.c
index b45657d..8d606f9 100644
--- a/lib/tar.c
+++ b/lib/tar.c
@@ -233,7 +233,7 @@ int erofs_iostream_read(struct erofs_iostream *ios, void 
**buf, u64 bytes)
                                          ret, erofs_strerror(-errno));
        }
        *buf = ios->buffer;
-       ret = min_t(int, ios->tail, bytes);
+       ret = min_t(int, ios->tail, min_t(u64, bytes, INT_MAX));
        ios->head = ret;
        return ret;
 }
@@ -605,10 +605,9 @@ void tarerofs_remove_inode(struct erofs_inode *inode)
 static int tarerofs_write_file_data(struct erofs_inode *inode,
                                    struct erofs_tarfile *tar)
 {
-       unsigned int j;
        void *buf;
        int fd, nread;
-       u64 off;
+       u64 off, j;
 
        if (!inode->i_diskbuf) {
                inode->i_diskbuf = calloc(1, sizeof(*inode->i_diskbuf));
-- 
2.39.3