sendfile
--------

Documentation:
 man sendfile

Gnulib module: ---

Portability problems fixed by Gnulib:

Portability problems not fixed by Gnulib:

  * This function is missing on some platforms: NetBSD 5.0, OpenBSD 3.8, Minix 3.1.8, AIX 5.1, IRIX 6.5, Solaris 11 2010-11, Cygwin, mingw, MSVC 14, Android 4.4.

  * On platforms where off_t is a 32-bit type, this function may not work correctly on files larger than 2 GB.  The fix is to use the AC_SYS_LARGEFILE macro.