[PATCH] splice: add support for sys_tee()

Basically an in-kernel implementation of tee, which uses splice and the
pipe buffers as an intelligent way to pass data around by reference.

Where the user space tee consumes the input and produces a stdout and
file output, this syscall merely duplicates the data inside a pipe to
another pipe. No data is copied, the output just grabs a reference to the
input pipe data.

Signed-off-by: Jens Axboe <axboe@suse.de>

1 files changed, 2 insertions, 1 deletions

diff --git a/include/asm-powerpc/unistd.h b/include/asm-powerpc/unistd.h
index 536ba0873052..c612f1a62772 100644
--- a/include/asm-powerpc/unistd.h
+++ b/include/asm-powerpc/unistd.h
@@ -302,8 +302,9 @@
 #define __NR_ppoll              281
 #define __NR_unshare            282
 #define __NR_splice             283
+#define __NR_tee                284
 
-#define __NR_syscalls           284
+#define __NR_syscalls           285
 
 #ifdef __KERNEL__
 #define __NR__exit __NR_exit