Implement sendfile64

 -Erik

2 files changed, 48 insertions, 1 deletions

diff --git a/libc/sysdeps/linux/common/Makefile b/libc/sysdeps/linux/common/Makefile
index a0b140f65..f66c09f31 100644
--- a/libc/sysdeps/linux/common/Makefile
+++ b/libc/sysdeps/linux/common/Makefile
@@ -34,7 +34,8 @@ CSRC=	waitpid.c getdnnm.c gethstnm.c getcwd.c \
 	wait3.c setpgrp.c getdtablesize.c create_module.c ptrace.c \
 	cmsg_nxthdr.c longjmp.c open64.c ftruncate64.c \
 	truncate64.c getrlimit64.c setrlimit64.c creat64.c mmap64.c \
-	llseek.c pread_write.c _exit.c setuid.c sync.c getdirname.c
+	llseek.c pread_write.c _exit.c setuid.c sync.c getdirname.c \
+	sendfile64.c
 ifneq ($(strip $(EXCLUDE_BRK)),y)
 CSRC+=sbrk.c
 endif
diff --git a/libc/sysdeps/linux/common/sendfile64.c b/libc/sysdeps/linux/common/sendfile64.c
new file mode 100644
index 000000000..17ba803ea
--- /dev/null
+++ b/libc/sysdeps/linux/common/sendfile64.c
@@ -0,0 +1,46 @@
+/*
+ * 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 __WORDSIZE == 64
+/* 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__
+#if defined __NR_sendfile64
+_syscall4(ssize_t,sendfile64, int, out_fd, int, in_fd, __off64_t *, offset, size_t, count)
+
+#else
+ssize_t sendfile64 (int out_fd, int in_fd, __off64_t *offset, size_t count)
+{
+  __set_errno (ENOSYS);
+  return -1;
+}
+#endif
+
+#endif /* __UCLIBC_HAS_LFS__ */
+
+#else /* __WORDSIZE */
+#error Your machine is not 64 bit or 32 bit, I am dazed and confused.
+#endif