[PATCH] VFS: Make filldir_t and struct kstat deal in 64-bit inode numbers

[linux-2.6.git] / arch / x86_64 / ia32 / sys_ia32.c

diff --git a/arch/x86_64/ia32/sys_ia32.c b/arch/x86_64/ia32/sys_ia32.c
index 26a01717cc1a449703894bcc8154071d05ecc860..c9bac3af29d6a746be28d38a241667e78593df3f 100644 (file)
--- a/arch/x86_64/ia32/sys_ia32.c
+++ b/arch/x86_64/ia32/sys_ia32.c
@@ -76,6 +76,8 @@
 
 int cp_compat_stat(struct kstat *kbuf, struct compat_stat __user *ubuf)
 {
+       compat_ino_t ino;
+
        typeof(ubuf->st_uid) uid = 0;
        typeof(ubuf->st_gid) gid = 0;
        SET_UID(uid, kbuf->uid);
@@ -84,9 +86,12 @@ int cp_compat_stat(struct kstat *kbuf, struct compat_stat __user *ubuf)
                return -EOVERFLOW;
        if (kbuf->size >= 0x7fffffff)
                return -EOVERFLOW;
+       ino = kbuf->ino;
+       if (sizeof(ino) < sizeof(kbuf->ino) && ino != kbuf->ino)
+               return -EOVERFLOW;
        if (!access_ok(VERIFY_WRITE, ubuf, sizeof(struct compat_stat)) ||
            __put_user (old_encode_dev(kbuf->dev), &ubuf->st_dev) ||
-           __put_user (kbuf->ino, &ubuf->st_ino) ||
+           __put_user (ino, &ubuf->st_ino) ||
            __put_user (kbuf->mode, &ubuf->st_mode) ||
            __put_user (kbuf->nlink, &ubuf->st_nlink) ||
            __put_user (uid, &ubuf->st_uid) ||