[PATCH v10 1/2] Added support for class FILE_INFORMATION_ALLOCATION in setFileInformationByHandle

[Stéphane Bacri]

From: Stéphane Bacri

---
 configure              |  6 ++++++
 configure.ac           |  1 +
 dlls/kernelbase/file.c |  5 ++++-
 dlls/ntdll/unix/file.c | 19 +++++++++++++++++++
 include/config.h.in    |  3 +++
 5 files changed, 33 insertions(+), 1 deletion(-)

diff --git a/configure b/configure
index c2d47a7c5db..bc9c6731c2f 100755
--- a/configure
+++ b/configure
@@ -21086,6 +21086,12 @@ if test "x$ac_cv_func_posix_fallocate" = xyes
 then :
   printf "%s\n" "#define HAVE_POSIX_FALLOCATE 1" >>confdefs.h

+fi
+ac_fn_c_check_func "$LINENO" "fallocate" "ac_cv_func_fallocate"
+if test "x$ac_cv_func_fallocate" = xyes
+then :
+  printf "%s\n" "#define HAVE_FALLOCATE 1" >>confdefs.h
+
 fi
 ac_fn_c_check_func "$LINENO" "prctl" "ac_cv_func_prctl"
 if test "x$ac_cv_func_prctl" = xyes
diff --git a/configure.ac b/configure.ac
index dd139950e10..0c1d5806dd1 100644
--- a/configure.ac
+++ b/configure.ac
@@ -2075,6 +2075,7 @@ AC_CHECK_FUNCS(\
    port_create \
    posix_fadvise \
    posix_fallocate \
+	fallocate \
    prctl \
    sched_getcpu \
    sched_yield \
diff --git a/dlls/kernelbase/file.c b/dlls/kernelbase/file.c
index f0dedfe3b14..416892ef14c 100644
--- a/dlls/kernelbase/file.c
+++ b/dlls/kernelbase/file.c
@@ -3678,7 +3678,6 @@ BOOL WINAPI DECLSPEC_HOTPATCH SetFileInformationByHandle( HANDLE file, FILE_INFO
     switch (class)
     {
     case FileNameInfo:
-    case FileAllocationInfo:
     case FileStreamInfo:
     case FileIdBothDirectoryInfo:
     case FileIdBothDirectoryRestartInfo:
@@ -3693,6 +3692,10 @@ BOOL WINAPI DECLSPEC_HOTPATCH SetFileInformationByHandle( HANDLE file, FILE_INFO
         SetLastError( ERROR_CALL_NOT_IMPLEMENTED );
         return FALSE;

+    case FileAllocationInfo:
+        status = NtSetInformationFile( file, &io, info, size, FileAllocationInformation );
+        break;
+
     case FileEndOfFileInfo:
         status = NtSetInformationFile( file, &io, info, size, FileEndOfFileInformation );
         break;
diff --git a/dlls/ntdll/unix/file.c b/dlls/ntdll/unix/file.c
index faef06ae084..c0afde83062 100644
--- a/dlls/ntdll/unix/file.c
+++ b/dlls/ntdll/unix/file.c
@@ -4693,6 +4693,25 @@ NTSTATUS WINAPI NtSetInformationFile( HANDLE handle, IO_STATUS_BLOCK *io,
         else status = STATUS_INVALID_PARAMETER_3;
         break;

+    case FileAllocationInformation:
+#ifdef HAVE_FALLOCATE
+        if (len >= sizeof(FILE_ALLOCATION_INFORMATION))
+        {
+            const FILE_ALLOCATION_INFORMATION *info = ptr;
+            if ((status = server_get_unix_fd( handle, 0, &fd, &needs_close, NULL, NULL )))
+                return io->Status = status;
+
+            if (fallocate( fd, FALLOC_FL_KEEP_SIZE, 0, (off_t)info->AllocationSize.QuadPart ) == -1)
+                status = errno_to_status( errno );
+
+            if (needs_close) close( fd );
+        }
+        else status = STATUS_INVALID_PARAMETER_3;
+#else
+            WARN( "setting file allocation information not supported on this platform\n" );
+#endif
+        break;
+
     case FilePositionInformation:
         if (len >= sizeof(FILE_POSITION_INFORMATION))
         {
diff --git a/include/config.h.in b/include/config.h.in
index 6033d8674f3..57add31fc95 100644
--- a/include/config.h.in
+++ b/include/config.h.in
@@ -321,6 +321,9 @@
 /* Define to 1 if you have the 'posix_fallocate' function. */
 #undef HAVE_POSIX_FALLOCATE

+/* Define to 1 if you have the 'fallocate' function. */
+#undef HAVE_FALLOCATE
+
 /* Define to 1 if you have the 'prctl' function. */
 #undef HAVE_PRCTL