From b8e4320b7b2e12b5e5ceedc71272a608056fbb7a Mon Sep 17 00:00:00 2001
From: Christos Zoulas <christos@zoulas.com>
Date: Mon, 29 Mar 2021 17:27:37 -0400
Subject: [PATCH] Not all statfs's have f_iosize

---
 configure.ac                         | 7 +++++++
 libarchive/archive_read_disk_posix.c | 5 +++++
 2 files changed, 12 insertions(+)

diff --git a/configure.ac b/configure.ac
index dd10e7e4d..201185dfd 100644
--- a/configure.ac
+++ b/configure.ac
@@ -566,6 +566,13 @@ AC_CHECK_MEMBERS([struct statfs.f_namemax],,,
 #include <sys/mount.h>
 ])
 
+# Check for f_iosize in struct statfs
+AC_CHECK_MEMBERS([struct statfs.f_iosize],,,
+[
+#include <sys/param.h>
+#include <sys/mount.h>
+])
+
 # Check for f_iosize in struct statvfs
 AC_CHECK_MEMBERS([struct statvfs.f_iosize],,,
 [
diff --git a/libarchive/archive_read_disk_posix.c b/libarchive/archive_read_disk_posix.c
index 772e203bb..3c8bd11e8 100644
--- a/libarchive/archive_read_disk_posix.c
+++ b/libarchive/archive_read_disk_posix.c
@@ -1544,8 +1544,13 @@ set_statfs_transfer_size(struct filesystem *fs, const struct statfs *sfs)
 {
 	fs->xfer_align = sfs->f_bsize > 0 ? (long)sfs->f_bsize : -1;
 	fs->max_xfer_size = -1;
+#if defined(HAVE_STRUCT_STATFS_F_IOSIZE)
 	fs->min_xfer_size = sfs->f_iosize > 0 ? (long)sfs->f_iosize : -1;
 	fs->incr_xfer_size = sfs->f_iosize > 0 ? (long)sfs->f_iosize : -1;
+#else
+	fs->min_xfer_size = sfs->f_bsize > 0 ? (long)sfs->f_bsize : -1;
+	fs->incr_xfer_size = sfs->f_bsize > 0 ? (long)sfs->f_bsize : -1;
+#endif
 }
 #endif
 
-- 
2.47.2