grub2/0006-Support-lseek64.patch

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From 608bec51128008afb81c9e3f297283e9f830a146 Mon Sep 17 00:00:00 2001
From: Vladimir Serbinenko <phcoder@gmail.com>
Date: Mon, 23 Jan 2017 20:21:05 +0300
Subject: [PATCH 006/176] Support lseek64.
Android doesn't have 64-bit off_t, so use off64_t instead.
---
configure.ac | 5 ++++-
grub-core/osdep/unix/hostdisk.c | 8 ++++++++
2 files changed, 12 insertions(+), 1 deletion(-)
diff --git a/configure.ac b/configure.ac
index d10d8adac..e0262e159 100644
--- a/configure.ac
+++ b/configure.ac
@@ -373,7 +373,10 @@ case "$host_os" in
;;
*)
AC_CHECK_SIZEOF(off_t)
- test x"$ac_cv_sizeof_off_t" = x8 || AC_MSG_ERROR([Large file support is required]);;
+ if test x"$ac_cv_sizeof_off_t" != x8 ; then
+ AC_CHECK_SIZEOF(off64_t)
+ test x"$ac_cv_sizeof_off64_t" = x8 || AC_MSG_ERROR([Large file support is required])
+ fi;;
esac
if test x$USE_NLS = xno; then
diff --git a/grub-core/osdep/unix/hostdisk.c b/grub-core/osdep/unix/hostdisk.c
index 2a8c5882e..5450cf416 100644
--- a/grub-core/osdep/unix/hostdisk.c
+++ b/grub-core/osdep/unix/hostdisk.c
@@ -77,11 +77,19 @@ grub_util_get_fd_size (grub_util_fd_t fd, const char *name, unsigned *log_secsiz
int
grub_util_fd_seek (grub_util_fd_t fd, grub_uint64_t off)
{
+#if SIZEOF_OFF_T == 8
off_t offset = (off_t) off;
if (lseek (fd, offset, SEEK_SET) != offset)
return -1;
+#elif SIZEOF_OFF64_T == 8
+ off64_t offset = (off64_t) off;
+ if (lseek64 (fd, offset, SEEK_SET) != offset)
+ return -1;
+#else
+#error "No large file support"
+#endif
return 0;
}
--
2.13.0