* autoload.cc (NtSetInformationFile): Define.

	* cygwin.din: Export posix_fadvise and posix_fallocate.
	* fhandler.cc (fhandler_base::fadvise): New method.
	(fhandler_base::ftruncate): Add allow_truncate parameter.
	* fhandler.h (class fhandler_base): Add fadvise method.  Accomodate
	new parameter to ftruncate.
	(class fhandler_pipe): Add fadvise and ftruncate methods.
	(class fhandler_disk_file): Add fadvise method.  Accomodate new
	parameter to ftruncate.
	* fhandler_disk_file.cc (fhandler_disk_file::fadvise): New method.
	(fhandler_disk_file::ftruncate): Accomodate new allow_truncate
	parameter.  Set EOF using NtSetInformationFile on NT.
	* ntdll.h (struct _FILE_END_OF_FILE_INFORMATION): Define.
	(NtSetInformationFile): Declare.
	* pipe.cc (fhandler_pipe::fadvise): New method.
	(fhandler_pipe::ftruncate): Ditto.
	* syscalls.cc (posix_fadvise): New function.
	(posix_fallocate): Ditto.
	(ftruncate64): Accomodate second parameter to fhandler's ftruncate
	method.
	* include/fcntl.h: Add POSIX_FADV_* flags.  Add declarations of
	posix_fadvise and posix_fallocate.
	* include/cygwin/version.h: Bump API minor number.

1 files changed, 33 insertions, 1 deletions

diff --git a/winsup/cygwin/syscalls.cc b/winsup/cygwin/syscalls.cc
index a8b7aa815..c56cb58f0 100644
--- a/winsup/cygwin/syscalls.cc
+++ b/winsup/cygwin/syscalls.cc
@@ -1753,12 +1753,44 @@ cygwin_setmode (int fd, int mode)
 }
 
 extern "C" int
+posix_fadvise (int fd, _off64_t offset, _off64_t len, int advice)
+{
+  int res = -1;
+  cygheap_fdget cfd (fd);
+  if (cfd >= 0)
+    res = cfd->fadvise (offset, len, advice);
+  else
+    set_errno (EBADF);
+  syscall_printf ("%d = posix_fadvice (%d, %D, %D, %d)",
+  		  res, fd, offset, len, advice);
+  return res;
+}
+
+extern "C" int
+posix_fallocate (int fd, _off64_t offset, _off64_t len)
+{
+  int res = -1;
+  if (offset < 0 || len == 0)
+    set_errno (EINVAL);
+  else
+    {
+      cygheap_fdget cfd (fd);
+      if (cfd >= 0)
+	res = cfd->ftruncate (offset + len, false);
+      else
+	set_errno (EBADF);
+    }
+  syscall_printf ("%d = posix_fallocate (%d, %D, %D)", res, fd, offset, len);
+  return res;
+}
+
+extern "C" int
 ftruncate64 (int fd, _off64_t length)
 {
   int res = -1;
   cygheap_fdget cfd (fd);
   if (cfd >= 0)
-    res = cfd->ftruncate (length);
+    res = cfd->ftruncate (length, true);
   else
     set_errno (EBADF);
   syscall_printf ("%d = ftruncate (%d, %D)", res, fd, length);