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authorBreno Leitao <leitao@debian.org>2023-10-16 06:47:48 -0700
committerJens Axboe <axboe@kernel.dk>2023-10-19 16:42:03 -0600
commit4232c6e349f3a591fd0f432e6b858d32095adce6 (patch)
treed4af616068a1fb5ad312b0240625e6b6dbfc4558 /io_uring
parenta5d2f99aff6b6f9cd6a1ab6907d8be8066114791 (diff)
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io_uring/cmd: Introduce SOCKET_URING_OP_SETSOCKOPT
Add initial support for SOCKET_URING_OP_SETSOCKOPT. This new command is similar to setsockopt. This implementation leverages the function do_sock_setsockopt(), which is shared with the setsockopt() system call path. Important to say that userspace needs to keep the pointer's memory alive until the operation is completed. I.e, the memory could not be deallocated before the CQE is returned to userspace. Signed-off-by: Breno Leitao <leitao@debian.org> Reviewed-by: Gabriel Krisman Bertazi <krisman@suse.de> Link: https://lore.kernel.org/r/20231016134750.1381153-11-leitao@debian.org Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'io_uring')
-rw-r--r--io_uring/uring_cmd.c21
1 files changed, 21 insertions, 0 deletions
diff --git a/io_uring/uring_cmd.c b/io_uring/uring_cmd.c
index 8b045830b0d9..acbc2924ecd2 100644
--- a/io_uring/uring_cmd.c
+++ b/io_uring/uring_cmd.c
@@ -240,6 +240,25 @@ static inline int io_uring_cmd_getsockopt(struct socket *sock,
return optlen;
}
+static inline int io_uring_cmd_setsockopt(struct socket *sock,
+ struct io_uring_cmd *cmd,
+ unsigned int issue_flags)
+{
+ bool compat = !!(issue_flags & IO_URING_F_COMPAT);
+ int optname, optlen, level;
+ void __user *optval;
+ sockptr_t optval_s;
+
+ optval = u64_to_user_ptr(READ_ONCE(cmd->sqe->optval));
+ optname = READ_ONCE(cmd->sqe->optname);
+ optlen = READ_ONCE(cmd->sqe->optlen);
+ level = READ_ONCE(cmd->sqe->level);
+ optval_s = USER_SOCKPTR(optval);
+
+ return do_sock_setsockopt(sock, compat, level, optname, optval_s,
+ optlen);
+}
+
#if defined(CONFIG_NET)
int io_uring_cmd_sock(struct io_uring_cmd *cmd, unsigned int issue_flags)
{
@@ -264,6 +283,8 @@ int io_uring_cmd_sock(struct io_uring_cmd *cmd, unsigned int issue_flags)
return arg;
case SOCKET_URING_OP_GETSOCKOPT:
return io_uring_cmd_getsockopt(sock, cmd, issue_flags);
+ case SOCKET_URING_OP_SETSOCKOPT:
+ return io_uring_cmd_setsockopt(sock, cmd, issue_flags);
default:
return -EOPNOTSUPP;
}