aleph/lkl_linux
1
0
Fork 0
mirror of https://github.com/lkl/linux.git synced 2025-12-19 16:13:19 +09:00
Code Issues Packages Projects Releases Wiki Activity

splice: change exported internal do_splice() helper to take kernel offset

Browse Source 
With the set_fs change, we can no longer rely on copy_{to,from}_user()
accepting a kernel pointer, and it was bad form to do so anyway. Clean
this up and change the internal helper that io_uring uses to deal with
kernel pointers instead. This puts the offset copy in/out in __do_splice()
instead, which just calls the same helper.

Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Jens Axboe
2020-10-22 14:15:51 -06:00
parent 4017eb91a9
commit ee6e00c868
2 changed files with 52 additions and 15 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
include/linux/splice.h
View File

@@ -78,8 +78,8 @@ extern ssize_t add_to_pipe(struct pipe_inode_info *,
struct pipe_buffer *);
extern ssize_t splice_direct_to_actor(struct file *, struct splice_desc *,
splice_direct_actor *);
extern long do_splice(struct file *in, loff_t __user *off_in,
struct file *out, loff_t __user *off_out,
extern long do_splice(struct file *in, loff_t *off_in,
struct file *out, loff_t *off_out,
size_t len, unsigned int flags);
extern long do_tee(struct file *in, struct file *out, size_t len,