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authorEric Andersen <andersen@codepoet.org>2002-11-14 00:55:46 +0000
committerEric Andersen <andersen@codepoet.org>2002-11-14 00:55:46 +0000
commit1a953df3b4e0545c5d42f656834346ec16cf2654 (patch)
tree3c072207ca94e5493682906b2703b3d7a548391b /libc/sysdeps
parent4c316e6c2c8d44bfdda55fa6bae8efdd345eb14b (diff)
Implement sendfile64
-Erik
Diffstat (limited to 'libc/sysdeps')
-rw-r--r--libc/sysdeps/linux/common/Makefile3
-rw-r--r--libc/sysdeps/linux/common/sendfile64.c46
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