revert of mass delete of the posix subsystem. perhaps there is hope for it yet.

[reactos.git] / posix / lib / psxdll / unistd / write.c

diff --git a/posix/lib/psxdll/unistd/write.c b/posix/lib/psxdll/unistd/write.c
new file mode 100644 (file)
index 0000000..55186ea
--- /dev/null
+++ b/posix/lib/psxdll/unistd/write.c
@@ -0,0 +1,68 @@
+/* $Id: write.c,v 1.6 2002/10/29 04:45:48 rex Exp $
+ */
+/*
+ * COPYRIGHT:   See COPYING in the top level directory
+ * PROJECT:     ReactOS POSIX+ Subsystem
+ * FILE:        subsys/psx/lib/psxdll/unistd/write.c
+ * PURPOSE:     Write on a file
+ * PROGRAMMER:  KJK::Hyperion <noog@libero.it>
+ * UPDATE HISTORY:
+ *              15/02/2002: Created
+ *              21/03/2002: Implemented write() (KJK::Hyperion <noog@libero.it>)
+ */
+
+#include <ddk/ntddk.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <psx/debug.h>
+#include <psx/errno.h>
+#include <psx/fdtable.h>
+
+ssize_t write(int fildes, const void *buf, size_t nbyte)
+{
+ __fildes_t      fdDescriptor;
+ NTSTATUS        nErrCode;
+ IO_STATUS_BLOCK isbStatus;
+
+ if(nbyte == 0)
+  return (0);
+
+ if(fcntl(fildes, F_GETALL, &fdDescriptor) == -1)
+ {
+  ERR("fcntl() failed, errno %d", errno);
+  return (0);
+ }
+
+ if((fdDescriptor.OpenFlags && O_APPEND) == O_APPEND)
+ {
+  TODO("move file pointer to the end");
+ }
+
+ INFO("handle for descriptor %d is %d", fildes, fdDescriptor.FileHandle);
+
+ nErrCode = NtWriteFile
+ (
+  fdDescriptor.FileHandle,
+  NULL,
+  NULL,
+  NULL,
+  &isbStatus,
+  (PVOID)buf,
+  nbyte,
+  NULL,
+  NULL
+ );
+
+ if(!NT_SUCCESS(nErrCode))
+ {
+  ERR("NtWriteFile() failed with status 0x%08X", nErrCode);
+  errno = __status_to_errno(nErrCode);
+  return (0);
+ }
+
+ return (isbStatus.Information);
+}
+
+/* EOF */
+