support/sys-sendfile.c

   1 /*
   2  * <sys/sendfile.h> wrapper functions.
   3  *
   4  * Authors:
   5  *   Jonathan Pryor (jonpryor@vt.edu)
   6  *
   7  * Copyright (C) 2004 Jonathan Pryor
   8  */
   9
  10 #include <config.h>
  11
  12 #include <sys/types.h>
  13 #include <errno.h>
  14
  15 #include "mono/utils/mono-compiler.h"
  16 #include "map.h"
  17 #include "mph.h"
  18
  19 #ifdef HAVE_SYS_SENDFILE_H
  20 #include <sys/sendfile.h>
  21 #endif /* ndef HAVE_SYS_SENDFILE_H */
  22
  23 G_BEGIN_DECLS
  24
  25 #ifdef HAVE_SENDFILE
  26 mph_ssize_t
  27 Mono_Posix_Syscall_sendfile (int out_fd, int in_fd, mph_off_t *offset, mph_size_t count)
  28 {
  29         off_t _offset;
  30         ssize_t r;
  31         mph_return_if_off_t_overflow (*offset);
  32
  33         _offset = *offset;
  34
  35 #if defined(HOST_DARWIN) || defined(HOST_BSD)
  36         /* The BSD version has 6 arguments */
  37         g_assert_not_reached ();
  38 #else
  39         r = sendfile (out_fd, in_fd, &_offset, (size_t) count);
  40 #endif
  41
  42         *offset = _offset;
  43
  44         return r;
  45 }
  46 #endif /* ndef HAVE_SENDFILE */
  47
  48 G_END_DECLS
  49
  50 /*
  51  * vim: noexpandtab
  52  */