/* * sendfile64 syscall. Copes with 64 bit and 32 bit machines * and on 32 bit machines this sends things into the kernel as * two 32-bit arguments (high and low 32 bits of length) that * are ordered based on endianess. It turns out endian.h has * just the macro we need to order things, __LONG_LONG_PAIR. * * Copyright (C) 2002 Erik Andersen <andersen@codepoet.org> * * This file is subject to the terms and conditions of the GNU * Lesser General Public License. See the file COPYING.LIB in * the main directory of this archive for more details. */ #include <features.h> #include <unistd.h> #include <errno.h> #include <endian.h> #include <stdint.h> #include <sys/sendfile.h> #include <sys/syscall.h> #if defined __NR_sendfile64 #if __WORDSIZE == 64 || (defined(__powerpc__) && defined (__UCLIBC_HAS_LFS__)) /* For a 64 bit machine, life is simple... */ _syscall4(ssize_t,sendfile64, int, out_fd, int, in_fd, __off64_t *, offset, size_t, count); #elif __WORDSIZE == 32 #if defined __UCLIBC_HAS_LFS__ _syscall4(ssize_t,sendfile64, int, out_fd, int, in_fd, __off64_t *, offset, size_t, count); #endif /* __UCLIBC_HAS_LFS__ */ #else /* __WORDSIZE */ #error Your machine is not 64 bit or 32 bit, I am dazed and confused. #endif /* __WORDSIZE */ #else /* ! defined __NR_sendfile64 */ ssize_t sendfile64 (int out_fd, int in_fd, __off64_t *offset, size_t count) { __set_errno (ENOSYS); return -1; } #endif