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authorJens Axboe <axboe@suse.de>2006-03-30 15:15:30 +0200
committerLinus Torvalds <torvalds@g5.osdl.org>2006-03-30 12:28:18 -0800
commit5274f052e7b3dbd81935772eb551dfd0325dfa9d (patch)
treec79f813ec513660edb6f1e4a75cb366c6b84f53f /include/linux/syscalls.h
parent5d4fe2c1ce83c3e967ccc1ba3d580c1a5603a866 (diff)
[PATCH] Introduce sys_splice() system call
This adds support for the sys_splice system call. Using a pipe as a transport, it can connect to files or sockets (latter as output only). From the splice.c comments: "splice": joining two ropes together by interweaving their strands. This is the "extended pipe" functionality, where a pipe is used as an arbitrary in-memory buffer. Think of a pipe as a small kernel buffer that you can use to transfer data from one end to the other. The traditional unix read/write is extended with a "splice()" operation that transfers data buffers to or from a pipe buffer. Named by Larry McVoy, original implementation from Linus, extended by Jens to support splicing to files and fixing the initial implementation bugs. Signed-off-by: Jens Axboe <axboe@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/linux/syscalls.h')
-rw-r--r--include/linux/syscalls.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h
index e487e3b60f60..e78ffc7d5b56 100644
--- a/include/linux/syscalls.h
+++ b/include/linux/syscalls.h
@@ -569,5 +569,7 @@ asmlinkage long compat_sys_newfstatat(unsigned int dfd, char __user * filename,
asmlinkage long compat_sys_openat(unsigned int dfd, const char __user *filename,
int flags, int mode);
asmlinkage long sys_unshare(unsigned long unshare_flags);
+asmlinkage long sys_splice(int fdin, int fdout, size_t len,
+ unsigned int flags);
#endif