[PATCH v2 1/2] ntdll: Use posix_fallocate(2/3) instead of fallocate(2).

[Chip Davis]

From: Charles Davis <cdavis5x at gmail.com>

The fallocate(2) call only exists on Linux. posix_fallocate() is more
portable.

Signed-off-by: Chip Davis <cdavis at codeweavers.com>
---
v2: Don't fall back to fallocate(2).
---
 configure.ac           | 10 +---------
 dlls/ntdll/unix/file.c |  9 +++++----
 2 files changed, 6 insertions(+), 13 deletions(-)

diff --git a/configure.ac b/configure.ac
index fec39b6f2ac..cc8a4b79aaf 100644
--- a/configure.ac
+++ b/configure.ac
@@ -2183,6 +2183,7 @@ AC_CHECK_FUNCS(\
 	poll \
 	port_create \
 	posix_fadvise \
+	posix_fallocate \
 	prctl \
 	proc_pidinfo \
 	readlink \
@@ -2274,15 +2275,6 @@ then
   AC_DEFINE(HAVE_SCHED_SETAFFINITY, 1, [Define to 1 if you have the `sched_setaffinity' function.])
 fi
 
-AC_CACHE_CHECK([for fallocate],wine_cv_have_fallocate,
-                AC_LINK_IFELSE([AC_LANG_PROGRAM(
-[[#define _GNU_SOURCE
-#include <fcntl.h>]], [[fallocate(-1, 0, 0, 0);]])],[wine_cv_have_fallocate=yes],[wine_cv_have_fallocate=no]))
-if test "$wine_cv_have_fallocate" = "yes"
-then
-  AC_DEFINE(HAVE_FALLOCATE, 1, [Define to 1 if you have the `fallocate' function.])
-fi
-
 dnl **** Check for types ****
 
 AC_C_INLINE
diff --git a/dlls/ntdll/unix/file.c b/dlls/ntdll/unix/file.c
index 046338b2a82..e10c79cb846 100644
--- a/dlls/ntdll/unix/file.c
+++ b/dlls/ntdll/unix/file.c
@@ -4574,11 +4574,12 @@ NTSTATUS WINAPI NtSetInformationFile( HANDLE handle, IO_STATUS_BLOCK *io,
                 status = STATUS_INVALID_PARAMETER;
             else
             {
-#ifdef HAVE_FALLOCATE
-                if (fallocate( fd, 0, 0, (off_t)info->ValidDataLength.QuadPart ) == -1)
+#ifdef HAVE_POSIX_ALLOCATE
+                int err;
+                if ((err = posix_fallocate( fd, 0, (off_t)info->ValidDataLength.QuadPart )) != 0)
                 {
-                    if (errno == EOPNOTSUPP) WARN( "fallocate not supported on this filesystem\n" );
-                    else status = errno_to_status( errno );
+                    if (err == EOPNOTSUPP) WARN( "posix_fallocate not supported on this filesystem\n" );
+                    else status = errno_to_status( err );
                 }
 #else
                 FIXME( "setting valid data length not supported\n" );
-- 
2.33.0