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authorJens Axboe <axboe@suse.de>2006-04-26 14:39:29 +0200
committerJens Axboe <axboe@suse.de>2006-04-26 14:39:29 +0200
commit00522fb41a2a9bf0f98a007c0e2b516a3873148c (patch)
tree18bcbfb598f0ad0a4745aaee25dab6dccc6449a1 /include/linux/pipe_fs_i.h
parent912d35f86781e64d73be1ef358f703c08905ac37 (diff)
downloadlwn-00522fb41a2a9bf0f98a007c0e2b516a3873148c.tar.gz
lwn-00522fb41a2a9bf0f98a007c0e2b516a3873148c.zip
[PATCH] splice: rearrange moving to/from pipe helpers
We need these for people writing their own ->splice_read/write hooks. Signed-off-by: Jens Axboe <axboe@suse.de>
Diffstat (limited to 'include/linux/pipe_fs_i.h')
-rw-r--r--include/linux/pipe_fs_i.h17
1 files changed, 17 insertions, 0 deletions
diff --git a/include/linux/pipe_fs_i.h b/include/linux/pipe_fs_i.h
index ef7f33c0be19..0008d4bd4059 100644
--- a/include/linux/pipe_fs_i.h
+++ b/include/linux/pipe_fs_i.h
@@ -61,4 +61,21 @@ void __free_pipe_info(struct pipe_inode_info *);
/* from/to, of course */
#define SPLICE_F_MORE (0x04) /* expect more data */
+/*
+ * Passed to the actors
+ */
+struct splice_desc {
+ unsigned int len, total_len; /* current and remaining length */
+ unsigned int flags; /* splice flags */
+ struct file *file; /* file to read/write */
+ loff_t pos; /* file position */
+};
+
+typedef int (splice_actor)(struct pipe_inode_info *, struct pipe_buffer *,
+ struct splice_desc *);
+
+extern ssize_t splice_from_pipe(struct pipe_inode_info *, struct file *,
+ loff_t *, size_t, unsigned int,
+ splice_actor *);
+
#endif