From: Jens Axboe axboe@kernel.dk
Commit a4104821ad651d8a0b374f0b2474c345bbb42f82 upstream.
Since we no longer allow sending io_uring fds over SCM_RIGHTS, move to using io_is_uring_fops() to detect whether this is a io_uring fd or not. With that done, kill off io_uring_get_socket() as nobody calls it anymore.
This is in preparation to yanking out the rest of the core related to unix gc with io_uring.
Signed-off-by: Jens Axboe axboe@kernel.dk Signed-off-by: Sasha Levin sashal@kernel.org --- include/linux/io_uring.h | 9 +++++---- io_uring/io_uring.c | 13 ------------- io_uring/io_uring.h | 1 - net/core/scm.c | 2 +- net/unix/scm.c | 4 +--- 5 files changed, 7 insertions(+), 22 deletions(-)
diff --git a/include/linux/io_uring.h b/include/linux/io_uring.h index aefb73eeeebff..b3a32687f5143 100644 --- a/include/linux/io_uring.h +++ b/include/linux/io_uring.h @@ -93,6 +93,7 @@ int io_uring_cmd_sock(struct io_uring_cmd *cmd, unsigned int issue_flags); void io_uring_cmd_mark_cancelable(struct io_uring_cmd *cmd, unsigned int issue_flags); struct task_struct *io_uring_cmd_get_task(struct io_uring_cmd *cmd); +bool io_is_uring_fops(struct file *file); #else static inline int io_uring_cmd_import_fixed(u64 ubuf, unsigned long len, int rw, struct iov_iter *iter, void *ioucmd) @@ -111,10 +112,6 @@ static inline void io_uring_cmd_do_in_task_lazy(struct io_uring_cmd *ioucmd, void (*task_work_cb)(struct io_uring_cmd *, unsigned)) { } -static inline struct sock *io_uring_get_socket(struct file *file) -{ - return NULL; -} static inline void io_uring_task_cancel(void) { } @@ -141,6 +138,10 @@ static inline struct task_struct *io_uring_cmd_get_task(struct io_uring_cmd *cmd { return NULL; } +static inline bool io_is_uring_fops(struct file *file) +{ + return false; +} #endif
#endif diff --git a/io_uring/io_uring.c b/io_uring/io_uring.c index 59f5791c90c31..06bd8795a87d1 100644 --- a/io_uring/io_uring.c +++ b/io_uring/io_uring.c @@ -177,19 +177,6 @@ static struct ctl_table kernel_io_uring_disabled_table[] = { }; #endif
-struct sock *io_uring_get_socket(struct file *file) -{ -#if defined(CONFIG_UNIX) - if (io_is_uring_fops(file)) { - struct io_ring_ctx *ctx = file->private_data; - - return ctx->ring_sock->sk; - } -#endif - return NULL; -} -EXPORT_SYMBOL(io_uring_get_socket); - static inline void io_submit_flush_completions(struct io_ring_ctx *ctx) { if (!wq_list_empty(&ctx->submit_state.compl_reqs) || diff --git a/io_uring/io_uring.h b/io_uring/io_uring.h index c9992cd7f1385..0d66a7058dbe1 100644 --- a/io_uring/io_uring.h +++ b/io_uring/io_uring.h @@ -61,7 +61,6 @@ struct file *io_file_get_fixed(struct io_kiocb *req, int fd, unsigned issue_flags);
void __io_req_task_work_add(struct io_kiocb *req, unsigned flags); -bool io_is_uring_fops(struct file *file); bool io_alloc_async_data(struct io_kiocb *req); void io_req_task_queue(struct io_kiocb *req); void io_queue_iowq(struct io_kiocb *req, struct io_tw_state *ts_dont_use); diff --git a/net/core/scm.c b/net/core/scm.c index 7dc47c17d8638..737917c7ac627 100644 --- a/net/core/scm.c +++ b/net/core/scm.c @@ -105,7 +105,7 @@ static int scm_fp_copy(struct cmsghdr *cmsg, struct scm_fp_list **fplp) if (fd < 0 || !(file = fget_raw(fd))) return -EBADF; /* don't allow io_uring files */ - if (io_uring_get_socket(file)) { + if (io_is_uring_fops(file)) { fput(file); return -EINVAL; } diff --git a/net/unix/scm.c b/net/unix/scm.c index 6ff628f2349f5..822ce0d0d7915 100644 --- a/net/unix/scm.c +++ b/net/unix/scm.c @@ -35,10 +35,8 @@ struct sock *unix_get_socket(struct file *filp) /* PF_UNIX ? */ if (s && ops && ops->family == PF_UNIX) u_sock = s; - } else { - /* Could be an io_uring instance */ - u_sock = io_uring_get_socket(filp); } + return u_sock; } EXPORT_SYMBOL(unix_get_socket);