* 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.

winsup/cygwin/ChangeLog

@@ -1,3 +1,29 @@
+2006-08-07  Corinna Vinschen  <corinna@vinschen.de>
+
+	* 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. 
+
 2006-08-02  Christopher Faylor  <cgf@timesys.com>
 
 	* environ.cc (env_win32_to_posix_path_list): Declare.

winsup/cygwin/autoload.cc

@@ -403,6 +403,7 @@ LoadDLLfuncNt (NtQuerySecurityObject, 20, ntdll)
 LoadDLLfuncNt (NtQueryVirtualMemory, 24, ntdll)
 LoadDLLfuncNt (NtQueryVolumeInformationFile, 20, ntdll)
 LoadDLLfuncNt (NtSetEaFile, 16, ntdll)
+LoadDLLfuncNt (NtSetInformationFile, 20, ntdll)
 LoadDLLfuncNt (NtSetSecurityObject, 12, ntdll)
 LoadDLLfuncNt (NtUnlockVirtualMemory, 16, ntdll)
 LoadDLLfuncNt (NtUnmapViewOfSection, 8, ntdll)

winsup/cygwin/cygwin.din

@@ -976,6 +976,8 @@ poll SIGFE
 _poll = poll SIGFE
 popen SIGFE
 _popen = popen SIGFE
+posix_fadvise SIGFE
+posix_fallocate SIGFE
 posix_openpt SIGFE
 posix_regcomp SIGFE
 posix_regerror SIGFE

winsup/cygwin/fhandler.cc

@@ -1652,7 +1652,14 @@ fhandler_base::facl (int cmd, int nentries, __aclent32_t *aclbufp)
 }
 
 int
-fhandler_base::ftruncate (_off64_t length)
+fhandler_base::fadvise (_off64_t offset, _off64_t length, int advice)
+{
+  set_errno (EINVAL);
+  return -1;
+}
+
+int
+fhandler_base::ftruncate (_off64_t length, bool allow_truncate)
 {
   set_errno (EINVAL);
   return -1;

winsup/cygwin/fhandler.h

@@ -279,7 +279,8 @@ class fhandler_base
   virtual int __stdcall fchmod (mode_t mode) __attribute__ ((regparm (1)));
   virtual int __stdcall fchown (__uid32_t uid, __gid32_t gid) __attribute__ ((regparm (2)));
   virtual int __stdcall facl (int, int, __acl32 *) __attribute__ ((regparm (3)));
-  virtual int __stdcall ftruncate (_off64_t) __attribute__ ((regparm (2)));
+  virtual int __stdcall fadvise (_off64_t, _off64_t, int) __attribute__ ((regparm (3)));
+  virtual int __stdcall ftruncate (_off64_t, bool) __attribute__ ((regparm (3)));
   virtual int __stdcall link (const char *) __attribute__ ((regparm (2)));
   virtual int __stdcall utimes (const struct timeval *) __attribute__ ((regparm (2)));
   virtual int __stdcall fsync () __attribute__ ((regparm (1)));
@@ -536,6 +537,8 @@ class fhandler_pipe: public fhandler_base
   }
   int dup (fhandler_base *child);
   int ioctl (unsigned int cmd, void *);
+  int __stdcall fadvise (_off64_t, _off64_t, int) __attribute__ ((regparm (3)));
+  int __stdcall ftruncate (_off64_t, bool) __attribute__ ((regparm (3)));
   void fixup_in_child ();
   virtual void fixup_after_fork (HANDLE);
   void fixup_after_exec ();
@@ -684,7 +687,8 @@ class fhandler_disk_file: public fhandler_base
   int __stdcall fchmod (mode_t mode) __attribute__ ((regparm (1)));
   int __stdcall fchown (__uid32_t uid, __gid32_t gid) __attribute__ ((regparm (2)));
   int __stdcall facl (int, int, __acl32 *) __attribute__ ((regparm (3)));
-  int __stdcall ftruncate (_off64_t) __attribute__ ((regparm (2)));
+  int __stdcall fadvise (_off64_t, _off64_t, int) __attribute__ ((regparm (3)));
+  int __stdcall ftruncate (_off64_t, bool) __attribute__ ((regparm (3)));
   int __stdcall link (const char *) __attribute__ ((regparm (2)));
   int __stdcall utimes (const struct timeval *) __attribute__ ((regparm (2)));
 

winsup/cygwin/fhandler_disk_file.cc

@@ -762,45 +762,116 @@ fhandler_disk_file::facl (int cmd, int nentries, __aclent32_t *aclbufp)
 }
 
 int
-fhandler_disk_file::ftruncate (_off64_t length)
+fhandler_disk_file::fadvise (_off64_t offset, _off64_t length, int advice)
 {
-  int res = -1, res_bug = 0;
+  if (advice < POSIX_FADV_NORMAL || advice > POSIX_FADV_NOREUSE)
+    {
+      set_errno (EINVAL);
+      return -1;
+    }
+
+  if (!wincap.is_winnt ())
+    return 0;
+
+  /* Windows only supports advice flags for the whole file.  We're using
+     a simplified test here so that we don't have to ask for the actual
+     file size.  Length == 0 means all bytes starting at offset anyway.
+     So we only actually follow the advice, if it's given for offset == 0. */
+  if (offset != 0)
+    return 0;
+
+  /* We only support normal and sequential mode for now.  Everything which
+     is not POSIX_FADV_SEQUENTIAL is treated like POSIX_FADV_NORMAL. */
+  if (advice != POSIX_FADV_SEQUENTIAL)
+    advice = POSIX_FADV_NORMAL;
+
+  IO_STATUS_BLOCK io;
+  FILE_MODE_INFORMATION fmi;
+  NTSTATUS status = NtQueryInformationFile (get_handle (), &io,
+					    &fmi, sizeof fmi,
+					    FileModeInformation);
+  if (!NT_SUCCESS (status))
+    __seterrno_from_nt_status (status);
+  else
+    {
+      fmi.Mode &= ~FILE_SEQUENTIAL_ONLY;
+      if (advice == POSIX_FADV_SEQUENTIAL)
+        fmi.Mode |= FILE_SEQUENTIAL_ONLY;
+      status = NtSetInformationFile (get_handle (), &io, &fmi, sizeof fmi,
+				     FileModeInformation);
+      if (NT_SUCCESS (status))
+	return 0;
+      __seterrno_from_nt_status (status);
+    }
+
+  return -1;
+}
+
+int
+fhandler_disk_file::ftruncate (_off64_t length, bool allow_truncate)
+{
+  int res = -1;
 
-  if (length < 0 || !get_output_handle ())
+  if (length < 0 || !get_handle ())
     set_errno (EINVAL);
   else if (pc.isdir ())
     set_errno (EISDIR);
   else if (!(get_access () & GENERIC_WRITE))
     set_errno (EBADF);
   else
     {
-      _off64_t prev_loc = lseek (0, SEEK_CUR);
-      if (lseek (length, SEEK_SET) >= 0)
-	{
-	  if (get_fs_flags (FILE_SUPPORTS_SPARSE_FILES))
+      _off64_t actual_length;
+      DWORD size_high = 0;
+      actual_length = GetFileSize (get_handle (), &size_high);
+      actual_length += ((_off64_t) size_high) << 32;
+
+      /* If called through posix_fallocate, silently succeed if length
+         is less than the file's actual length. */
+      if (!allow_truncate && length < actual_length)
+	return 0;
+
+      if (wincap.is_winnt ())
+        {
+	  NTSTATUS status;
+	  IO_STATUS_BLOCK io;
+	  FILE_END_OF_FILE_INFORMATION feofi;
+
+	  feofi.EndOfFile.QuadPart = length;
+	  /* Create sparse files only when called through ftruncate, not when
+	     called through posix_fallocate. */
+	  if (allow_truncate
+	      && get_fs_flags (FILE_SUPPORTS_SPARSE_FILES)
+	      && length >= actual_length + (128 * 1024))
 	    {
-	      _off64_t actual_length;
-	      DWORD size_high = 0;
-	      actual_length = GetFileSize (get_output_handle (), &size_high);
-	      actual_length += ((_off64_t) size_high) << 32;
-	      if (length >= actual_length + (128 * 1024))
-		{
-		  DWORD dw;
-		  BOOL r = DeviceIoControl (get_output_handle (),
-					    FSCTL_SET_SPARSE, NULL, 0, NULL,
-					    0, &dw, NULL);
-		  syscall_printf ("%d = DeviceIoControl(%p, FSCTL_SET_SPARSE)",
-				  r, get_output_handle ());
-		}
+	      DWORD dw;
+	      BOOL r = DeviceIoControl (get_handle (),
+					FSCTL_SET_SPARSE, NULL, 0, NULL,
+					0, &dw, NULL);
+	      syscall_printf ("%d = DeviceIoControl(%p, FSCTL_SET_SPARSE)",
+				  r, get_handle ());
 	    }
-	  else if (wincap.has_lseek_bug ())
-	    res_bug = write (&res, 0);
-	  if (!SetEndOfFile (get_output_handle ()))
-	    __seterrno ();
+	  status = NtSetInformationFile (get_handle (), &io,
+					 &feofi, sizeof feofi,
+					 FileEndOfFileInformation);
+	  if (!NT_SUCCESS (status))
+	    __seterrno_from_nt_status (status);
 	  else
-	    res = res_bug;
-	  /* restore original file pointer location */
-	  lseek (prev_loc, SEEK_SET);
+	    res = 0;
+	}
+      else
+        {
+	  _off64_t prev_loc = lseek (0, SEEK_CUR);
+	  if (lseek (length, SEEK_SET) >= 0)
+	    {
+	      int res_bug = write (&res, 0);
+	      if (!SetEndOfFile (get_handle ()))
+		__seterrno ();
+	      else
+		res = res_bug;
+	      /* restore original file pointer location */
+	      lseek (prev_loc, SEEK_SET);
+	    }
+
 	}
     }
   return res;

winsup/cygwin/include/cygwin/version.h

@@ -294,12 +294,13 @@ details. */
       158: Export bindresvport, bindresvport_sa, iruserok_sa, rcmd_af,
 	   rresvport_af.
       159: Export posix_openpt.
+      160: Export posix_fadvice, posix_fallocate.
      */
 
      /* Note that we forgot to bump the api for ualarm, strtoll, strtoull */
 
 #define CYGWIN_VERSION_API_MAJOR 0
-#define CYGWIN_VERSION_API_MINOR 159
+#define CYGWIN_VERSION_API_MINOR 160
 
      /* There is also a compatibity version number associated with the
 	shared memory regions.  It is incremented when incompatible

winsup/cygwin/include/fcntl.h

@@ -1,6 +1,6 @@
 /* fcntl.h
 
-   Copyright 1996, 1998, 2001, 2005 Red Hat, Inc.
+   Copyright 1996, 1998, 2001, 2005, 2006 Red Hat, Inc.
 
 This file is part of Cygwin.
 
@@ -23,4 +23,20 @@ details. */
 #define O_DSYNC		_FSYNC
 #define O_RSYNC		_FSYNC
 
+#define POSIX_FADV_NORMAL	0
+#define POSIX_FADV_SEQUENTIAL	1
+#define POSIX_FADV_RANDOM	2
+#define POSIX_FADV_WILLNEED	3
+#define POSIX_FADV_DONTNEED	4
+#define POSIX_FADV_NOREUSE	5
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+extern int posix_fadvise _PARAMS ((int, off_t, off_t, int));
+extern int posix_fallocate _PARAMS ((int, off_t, off_t));
+#ifdef __cplusplus
+}
+#endif
+
 #endif /* _FCNTL_H */

winsup/cygwin/ntdll.h

@@ -484,6 +484,10 @@ typedef struct _FILE_POSITION_INFORMATION {
   LARGE_INTEGER CurrentByteOffset;
 } FILE_POSITION_INFORMATION, *PFILE_POSITION_INFORMATION;
 
+typedef struct _FILE_END_OF_FILE_INFORMATION {
+  LARGE_INTEGER EndOfFile;
+} FILE_END_OF_FILE_INFORMATION, *PFILE_END_OF_FILE_INFORMATION;
+
 typedef struct _FILE_MODE_INFORMATION {
   ULONG Mode;
 } FILE_MODE_INFORMATION, *PFILE_MODE_INFORMATION;
@@ -646,6 +650,8 @@ extern "C"
 					       VOID *, ULONG,
 					       FS_INFORMATION_CLASS);
   NTSTATUS NTAPI NtSetEaFile (HANDLE, PIO_STATUS_BLOCK, PVOID, ULONG);
+  NTSTATUS NTAPI NtSetInformationFile (HANDLE, PIO_STATUS_BLOCK, PVOID, ULONG,
+				       FILE_INFORMATION_CLASS);
   NTSTATUS NTAPI NtSetSecurityObject (HANDLE, SECURITY_INFORMATION,
 				      PSECURITY_DESCRIPTOR);
   NTSTATUS NTAPI NtUnlockVirtualMemory (HANDLE, PVOID *, ULONG *, ULONG);

winsup/cygwin/pipe.cc

@@ -151,6 +151,20 @@ fhandler_pipe::lseek (_off64_t offset, int whence)
   return -1;
 }
 
+int
+fhandler_pipe::fadvise (_off64_t offset, _off64_t length, int advice)
+{
+  set_errno (ESPIPE);
+  return -1;
+}
+
+int
+fhandler_pipe::ftruncate (_off64_t length, bool allow_truncate)
+{
+  set_errno (allow_truncate ? EINVAL : ESPIPE);
+  return -1;
+}
+
 void
 fhandler_pipe::set_close_on_exec (bool val)
 {

winsup/cygwin/syscalls.cc

@@ -1752,13 +1752,45 @@ cygwin_setmode (int fd, int mode)
   return res;
 }
 
+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);