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This works just like pipe2(2), except it also supports fixed file descriptors. Used in a similar fashion as for other fd instantiating opcodes (like accept, socket, open, etc), where sqe->file_slot is set appropriately if two direct descriptors are desired rather than a set of normal file descriptors. sqe->addr must be set to a pointer to an array of 2 integers, which is where the fixed/normal file descriptors are copied to. sqe->pipe_flags contains flags, same as what is allowed for pipe2(2). Future expansion of per-op private flags can go in sqe->ioprio, like we do for other opcodes that take both a "syscall" flag set and an io_uring opcode specific flag set. Signed-off-by: Jens Axboe <axboe@kernel.dk>
20 lines
888 B
C
20 lines
888 B
C
// SPDX-License-Identifier: GPL-2.0
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int __io_close_fixed(struct io_ring_ctx *ctx, unsigned int issue_flags,
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unsigned int offset);
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int io_openat_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe);
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int io_openat(struct io_kiocb *req, unsigned int issue_flags);
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void io_open_cleanup(struct io_kiocb *req);
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int io_openat2_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe);
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int io_openat2(struct io_kiocb *req, unsigned int issue_flags);
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int io_close_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe);
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int io_close(struct io_kiocb *req, unsigned int issue_flags);
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int io_pipe_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe);
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int io_pipe(struct io_kiocb *req, unsigned int issue_flags);
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int io_install_fixed_fd_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe);
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int io_install_fixed_fd(struct io_kiocb *req, unsigned int issue_flags);
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