From 659e87fe1cf3348a4e9f1bacfe205316fefd8a51 Mon Sep 17 00:00:00 2001
From: Brent Cook <busterb@gmail.com>
Date: Tue, 7 Oct 2025 03:49:29 -0500
Subject: move ftruncate to common libcompat for tests

---
 CMakeLists.txt            |  5 +++++
 crypto/CMakeLists.txt     |  4 ++++
 crypto/Makefile.am        |  4 ++++
 crypto/compat/ftruncate.c | 17 +++++++++++++++++
 m4/check-libc.m4          |  3 ++-
 tls/CMakeLists.txt        |  1 -
 tls/Makefile.am           |  1 -
 tls/compat/ftruncate.c    | 17 -----------------
 8 files changed, 32 insertions(+), 20 deletions(-)
 create mode 100644 crypto/compat/ftruncate.c
 delete mode 100644 tls/compat/ftruncate.c

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 17e5a0c..d73e185 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -226,6 +226,11 @@ if(HAVE_ASPRINTF)
 	add_definitions(-DHAVE_ASPRINTF)
 endif()
 
+check_symbol_exists(ftruncate "unistd.h" HAVE_FTRUNCATE)
+if(HAVE_FTRUNCATE)
+	add_definitions(-DHAVE_FTRUNCATE)
+endif()
+
 check_symbol_exists(getdelim "stdio.h" HAVE_GETDELIM)
 if(HAVE_GETDELIM)
 	add_definitions(-DHAVE_GETDELIM)
diff --git a/crypto/CMakeLists.txt b/crypto/CMakeLists.txt
index aacd2a7..137cf70 100644
--- a/crypto/CMakeLists.txt
+++ b/crypto/CMakeLists.txt
@@ -624,6 +624,10 @@ if(NOT HAVE_FREEZERO)
 	set(COMPAT_SRC ${COMPAT_SRC} compat/freezero.c)
 endif()
 
+if(NOT HAVE_FTRUNCATE)
+	set(COMPAT_SRC ${COMPAT_SRC} compat/ftruncate.c)
+endif()
+
 if(NOT HAVE_GETDELIM)
 	set(COMPAT_SRC ${COMPAT_SRC} compat/getdelim.c)
 endif()
diff --git a/crypto/Makefile.am b/crypto/Makefile.am
index a116996..7fea236 100644
--- a/crypto/Makefile.am
+++ b/crypto/Makefile.am
@@ -148,6 +148,10 @@ if !HAVE_FREEZERO
 libcompat_la_SOURCES += compat/freezero.c
 endif
 
+if !HAVE_FTRUNCATE
+libcompat_la_SOURCES += compat/ftruncate.c
+endif
+
 if !HAVE_GETDELIM
 libcompat_la_SOURCES += compat/getdelim.c
 endif
diff --git a/crypto/compat/ftruncate.c b/crypto/compat/ftruncate.c
new file mode 100644
index 0000000..e825e50
--- /dev/null
+++ b/crypto/compat/ftruncate.c
@@ -0,0 +1,17 @@
+/*
+ * Public domain
+ *
+ * Kinichiro Inoguchi <inoguchi@openbsd.org>
+ */
+
+#ifdef _WIN32
+
+#include <unistd.h>
+
+int
+ftruncate(int fd, off_t length)
+{
+	return _chsize(fd, length);
+}
+
+#endif
diff --git a/m4/check-libc.m4 b/m4/check-libc.m4
index dadf0da..eec3cb3 100644
--- a/m4/check-libc.m4
+++ b/m4/check-libc.m4
@@ -22,7 +22,7 @@ AC_CHECK_HEADERS([netinet/ip.h], [], [],
 ])
 AC_HEADER_RESOLV
 # Check for general libc functions
-AC_CHECK_FUNCS([asprintf freezero getdelim getline memmem])
+AC_CHECK_FUNCS([asprintf freezero ftruncate getdelim getline memmem])
 AC_CHECK_FUNCS([readpassphrase reallocarray recallocarray])
 AC_CHECK_FUNCS([strcasecmp strlcat strlcpy strndup strnlen strsep strtonum])
 AC_CHECK_FUNCS([timegm _mkgmtime timespecsub])
@@ -39,6 +39,7 @@ AC_CACHE_CHECK([for getpagesize], ac_cv_func_getpagesize, [
 ])
 AM_CONDITIONAL([HAVE_ASPRINTF], [test "x$ac_cv_func_asprintf" = xyes])
 AM_CONDITIONAL([HAVE_FREEZERO], [test "x$ac_cv_func_freezero" = xyes])
+AM_CONDITIONAL([HAVE_FTRUNCATE], [test "x$ac_cv_func_ftruncate" = xyes])
 AM_CONDITIONAL([HAVE_GETDELIM], [test "x$ac_cv_func_getdelim" = xyes])
 AM_CONDITIONAL([HAVE_GETLINE], [test "x$ac_cv_func_getline" = xyes])
 AM_CONDITIONAL([HAVE_GETPAGESIZE], [test "x$ac_cv_func_getpagesize" = xyes])
diff --git a/tls/CMakeLists.txt b/tls/CMakeLists.txt
index 6475245..a1b244a 100644
--- a/tls/CMakeLists.txt
+++ b/tls/CMakeLists.txt
@@ -37,7 +37,6 @@ if(WIN32)
 		${TLS_SRC}
 	)
 
-	set(TLS_COMPAT_SRC ${TLS_COMPAT_SRC} compat/ftruncate.c)
 	set(TLS_COMPAT_SRC ${TLS_COMPAT_SRC} compat/pread.c)
 	set(TLS_COMPAT_SRC ${TLS_COMPAT_SRC} compat/pwrite.c)
 endif()
diff --git a/tls/Makefile.am b/tls/Makefile.am
index 2a7b089..03824b4 100644
--- a/tls/Makefile.am
+++ b/tls/Makefile.am
@@ -70,7 +70,6 @@ libtls_la_SOURCES += tls_verify.c
 noinst_HEADERS = tls_internal.h
 
 if HOST_WIN
-libtls_la_SOURCES += compat/ftruncate.c
 libtls_la_SOURCES += compat/pread.c
 libtls_la_SOURCES += compat/pwrite.c
 endif
diff --git a/tls/compat/ftruncate.c b/tls/compat/ftruncate.c
deleted file mode 100644
index e825e50..0000000
--- a/tls/compat/ftruncate.c
+++ /dev/null
@@ -1,17 +0,0 @@
-/*
- * Public domain
- *
- * Kinichiro Inoguchi <inoguchi@openbsd.org>
- */
-
-#ifdef _WIN32
-
-#include <unistd.h>
-
-int
-ftruncate(int fd, off_t length)
-{
-	return _chsize(fd, length);
-}
-
-#endif
-- 
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