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| author | Breno Leitao <leitao@debian.org> | 2023-10-16 06:47:47 -0700 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2023-10-19 16:42:03 -0600 |
| commit | a5d2f99aff6b6f9cd6a1ab6907d8be8066114791 (patch) | |
| tree | fb1fb9b5d0b5b6afa0d15b6ea99343d0b665131c /include/uapi/linux/io_uring.h | |
| parent | d2cac3ec823798861f8f39b4aa0ec960ffa997b0 (diff) | |
| download | linux-a5d2f99aff6b6f9cd6a1ab6907d8be8066114791.tar.gz linux-a5d2f99aff6b6f9cd6a1ab6907d8be8066114791.tar.bz2 linux-a5d2f99aff6b6f9cd6a1ab6907d8be8066114791.zip | |
io_uring/cmd: Introduce SOCKET_URING_OP_GETSOCKOPT
Add support for getsockopt command (SOCKET_URING_OP_GETSOCKOPT), where
level is SOL_SOCKET. This is leveraging the sockptr_t infrastructure,
where a sockptr_t is either userspace or kernel space, and handled as
such.
Differently from the getsockopt(2), the optlen field is not a userspace
pointers. In getsockopt(2), userspace provides optlen pointer, which is
overwritten by the kernel. In this implementation, userspace passes a
u32, and the new value is returned in cqe->res. I.e., optlen is not a
pointer.
Important to say that userspace needs to keep the pointer alive until
the CQE is completed.
Signed-off-by: Breno Leitao <leitao@debian.org>
Reviewed-by: Gabriel Krisman Bertazi <krisman@suse.de>
Link: https://lore.kernel.org/r/20231016134750.1381153-10-leitao@debian.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'include/uapi/linux/io_uring.h')
| -rw-r--r-- | include/uapi/linux/io_uring.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/include/uapi/linux/io_uring.h b/include/uapi/linux/io_uring.h index 425f64eee44e..dcf7272463e9 100644 --- a/include/uapi/linux/io_uring.h +++ b/include/uapi/linux/io_uring.h @@ -43,6 +43,10 @@ struct io_uring_sqe { union { __u64 addr; /* pointer to buffer or iovecs */ __u64 splice_off_in; + struct { + __u32 level; + __u32 optname; + }; }; __u32 len; /* buffer size or number of iovecs */ union { @@ -80,6 +84,7 @@ struct io_uring_sqe { union { __s32 splice_fd_in; __u32 file_index; + __u32 optlen; struct { __u16 addr_len; __u16 __pad3[1]; @@ -90,6 +95,7 @@ struct io_uring_sqe { __u64 addr3; __u64 __pad2[1]; }; + __u64 optval; /* * If the ring is initialized with IORING_SETUP_SQE128, then * this field is used for 80 bytes of arbitrary command data @@ -736,6 +742,7 @@ struct io_uring_recvmsg_out { enum { SOCKET_URING_OP_SIOCINQ = 0, SOCKET_URING_OP_SIOCOUTQ, + SOCKET_URING_OP_GETSOCKOPT, }; #ifdef __cplusplus |