From: Jens Axboe <axboe@kernel.dk>
Date: Wed, 15 Jun 2022 22:27:42 +0000 (-0600)
Subject: io_uring: move opcode table to opdef.c
X-Git-Tag: for-5.20/io_uring-2022-07-29~117
X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=d9b57aa3cfc792ccac6858376c017dbea6cb2872;p=linux-block.git

io_uring: move opcode table to opdef.c

We already have the declarations in opdef.h, move the rest into its own
file rather than in the main io_uring.c file.

Signed-off-by: Jens Axboe <axboe@kernel.dk>
---

diff --git a/io_uring/Makefile b/io_uring/Makefile
index d70deed65a0b..466639c289be 100644
--- a/io_uring/Makefile
+++ b/io_uring/Makefile
@@ -7,5 +7,5 @@ obj-$(CONFIG_IO_URING)		+= io_uring.o xattr.o nop.o fs.o splice.o \
 					openclose.o uring_cmd.o epoll.o \
 					statx.o net.o msg_ring.o timeout.o \
 					sqpoll.o fdinfo.o tctx.o poll.o \
-					cancel.o kbuf.o rsrc.o rw.o
+					cancel.o kbuf.o rsrc.o rw.o opdef.o
 obj-$(CONFIG_IO_WQ)		+= io-wq.o
diff --git a/io_uring/io_uring.c b/io_uring/io_uring.c
index 0af61a6c29cf..c70319098627 100644
--- a/io_uring/io_uring.c
+++ b/io_uring/io_uring.c
@@ -90,22 +90,8 @@
 #include "kbuf.h"
 #include "rsrc.h"
 
-#include "xattr.h"
-#include "nop.h"
-#include "fs.h"
-#include "splice.h"
-#include "sync.h"
-#include "advise.h"
-#include "openclose.h"
-#include "uring_cmd.h"
-#include "epoll.h"
-#include "statx.h"
-#include "net.h"
-#include "msg_ring.h"
 #include "timeout.h"
 #include "poll.h"
-#include "cancel.h"
-#include "rw.h"
 
 #define IORING_MAX_ENTRIES	32768
 #define IORING_MAX_CQ_ENTRIES	(2 * IORING_MAX_ENTRIES)
@@ -161,13 +147,6 @@ static void io_eventfd_signal(struct io_ring_ctx *ctx);
 
 static struct kmem_cache *req_cachep;
 
-const char *io_uring_get_opcode(u8 opcode)
-{
-	if (opcode < IORING_OP_LAST)
-		return io_op_defs[opcode].name;
-	return "INVALID";
-}
-
 struct sock *io_uring_get_socket(struct file *file)
 {
 #if defined(CONFIG_UNIX)
@@ -1478,12 +1457,6 @@ bool io_alloc_async_data(struct io_kiocb *req)
 	return true;
 }
 
-static __maybe_unused int io_eopnotsupp_prep(struct io_kiocb *kiocb,
-					     const struct io_uring_sqe *sqe)
-{
-	return -EOPNOTSUPP;
-}
-
 int io_req_prep_async(struct io_kiocb *req)
 {
 	const struct io_op_def *def = &io_op_defs[req->opcode];
@@ -3909,442 +3882,8 @@ out_fput:
 	return ret;
 }
 
-static int io_no_issue(struct io_kiocb *req, unsigned int issue_flags)
-{
-	WARN_ON_ONCE(1);
-	return -ECANCELED;
-}
-
-const struct io_op_def io_op_defs[] = {
-	[IORING_OP_NOP] = {
-		.audit_skip		= 1,
-		.iopoll			= 1,
-		.name			= "NOP",
-		.prep			= io_nop_prep,
-		.issue			= io_nop,
-	},
-	[IORING_OP_READV] = {
-		.needs_file		= 1,
-		.unbound_nonreg_file	= 1,
-		.pollin			= 1,
-		.buffer_select		= 1,
-		.plug			= 1,
-		.audit_skip		= 1,
-		.ioprio			= 1,
-		.iopoll			= 1,
-		.async_size		= sizeof(struct io_async_rw),
-		.name			= "READV",
-		.prep			= io_prep_rw,
-		.issue			= io_read,
-		.prep_async		= io_readv_prep_async,
-		.cleanup		= io_readv_writev_cleanup,
-	},
-	[IORING_OP_WRITEV] = {
-		.needs_file		= 1,
-		.hash_reg_file		= 1,
-		.unbound_nonreg_file	= 1,
-		.pollout		= 1,
-		.plug			= 1,
-		.audit_skip		= 1,
-		.ioprio			= 1,
-		.iopoll			= 1,
-		.async_size		= sizeof(struct io_async_rw),
-		.name			= "WRITEV",
-		.prep			= io_prep_rw,
-		.issue			= io_write,
-		.prep_async		= io_writev_prep_async,
-		.cleanup		= io_readv_writev_cleanup,
-	},
-	[IORING_OP_FSYNC] = {
-		.needs_file		= 1,
-		.audit_skip		= 1,
-		.name			= "FSYNC",
-		.prep			= io_fsync_prep,
-		.issue			= io_fsync,
-	},
-	[IORING_OP_READ_FIXED] = {
-		.needs_file		= 1,
-		.unbound_nonreg_file	= 1,
-		.pollin			= 1,
-		.plug			= 1,
-		.audit_skip		= 1,
-		.ioprio			= 1,
-		.iopoll			= 1,
-		.async_size		= sizeof(struct io_async_rw),
-		.name			= "READ_FIXED",
-		.prep			= io_prep_rw,
-		.issue			= io_read,
-	},
-	[IORING_OP_WRITE_FIXED] = {
-		.needs_file		= 1,
-		.hash_reg_file		= 1,
-		.unbound_nonreg_file	= 1,
-		.pollout		= 1,
-		.plug			= 1,
-		.audit_skip		= 1,
-		.ioprio			= 1,
-		.iopoll			= 1,
-		.async_size		= sizeof(struct io_async_rw),
-		.name			= "WRITE_FIXED",
-		.prep			= io_prep_rw,
-		.issue			= io_write,
-	},
-	[IORING_OP_POLL_ADD] = {
-		.needs_file		= 1,
-		.unbound_nonreg_file	= 1,
-		.audit_skip		= 1,
-		.name			= "POLL_ADD",
-		.prep			= io_poll_add_prep,
-		.issue			= io_poll_add,
-	},
-	[IORING_OP_POLL_REMOVE] = {
-		.audit_skip		= 1,
-		.name			= "POLL_REMOVE",
-		.prep			= io_poll_remove_prep,
-		.issue			= io_poll_remove,
-	},
-	[IORING_OP_SYNC_FILE_RANGE] = {
-		.needs_file		= 1,
-		.audit_skip		= 1,
-		.name			= "SYNC_FILE_RANGE",
-		.prep			= io_sfr_prep,
-		.issue			= io_sync_file_range,
-	},
-	[IORING_OP_SENDMSG] = {
-		.needs_file		= 1,
-		.unbound_nonreg_file	= 1,
-		.pollout		= 1,
-		.ioprio			= 1,
-		.name			= "SENDMSG",
-#if defined(CONFIG_NET)
-		.async_size		= sizeof(struct io_async_msghdr),
-		.prep			= io_sendmsg_prep,
-		.issue			= io_sendmsg,
-		.prep_async		= io_sendmsg_prep_async,
-		.cleanup		= io_sendmsg_recvmsg_cleanup,
-#else
-		.prep			= io_eopnotsupp_prep,
-#endif
-	},
-	[IORING_OP_RECVMSG] = {
-		.needs_file		= 1,
-		.unbound_nonreg_file	= 1,
-		.pollin			= 1,
-		.buffer_select		= 1,
-		.ioprio			= 1,
-		.name			= "RECVMSG",
-#if defined(CONFIG_NET)
-		.async_size		= sizeof(struct io_async_msghdr),
-		.prep			= io_recvmsg_prep,
-		.issue			= io_recvmsg,
-		.prep_async		= io_recvmsg_prep_async,
-		.cleanup		= io_sendmsg_recvmsg_cleanup,
-#else
-		.prep			= io_eopnotsupp_prep,
-#endif
-	},
-	[IORING_OP_TIMEOUT] = {
-		.audit_skip		= 1,
-		.async_size		= sizeof(struct io_timeout_data),
-		.name			= "TIMEOUT",
-		.prep			= io_timeout_prep,
-		.issue			= io_timeout,
-	},
-	[IORING_OP_TIMEOUT_REMOVE] = {
-		/* used by timeout updates' prep() */
-		.audit_skip		= 1,
-		.name			= "TIMEOUT_REMOVE",
-		.prep			= io_timeout_remove_prep,
-		.issue			= io_timeout_remove,
-	},
-	[IORING_OP_ACCEPT] = {
-		.needs_file		= 1,
-		.unbound_nonreg_file	= 1,
-		.pollin			= 1,
-		.poll_exclusive		= 1,
-		.ioprio			= 1,	/* used for flags */
-		.name			= "ACCEPT",
-#if defined(CONFIG_NET)
-		.prep			= io_accept_prep,
-		.issue			= io_accept,
-#else
-		.prep			= io_eopnotsupp_prep,
-#endif
-	},
-	[IORING_OP_ASYNC_CANCEL] = {
-		.audit_skip		= 1,
-		.name			= "ASYNC_CANCEL",
-		.prep			= io_async_cancel_prep,
-		.issue			= io_async_cancel,
-	},
-	[IORING_OP_LINK_TIMEOUT] = {
-		.audit_skip		= 1,
-		.async_size		= sizeof(struct io_timeout_data),
-		.name			= "LINK_TIMEOUT",
-		.prep			= io_link_timeout_prep,
-		.issue			= io_no_issue,
-	},
-	[IORING_OP_CONNECT] = {
-		.needs_file		= 1,
-		.unbound_nonreg_file	= 1,
-		.pollout		= 1,
-		.name			= "CONNECT",
-#if defined(CONFIG_NET)
-		.async_size		= sizeof(struct io_async_connect),
-		.prep			= io_connect_prep,
-		.issue			= io_connect,
-		.prep_async		= io_connect_prep_async,
-#else
-		.prep			= io_eopnotsupp_prep,
-#endif
-	},
-	[IORING_OP_FALLOCATE] = {
-		.needs_file		= 1,
-		.name			= "FALLOCATE",
-		.prep			= io_fallocate_prep,
-		.issue			= io_fallocate,
-	},
-	[IORING_OP_OPENAT] = {
-		.name			= "OPENAT",
-		.prep			= io_openat_prep,
-		.issue			= io_openat,
-		.cleanup		= io_open_cleanup,
-	},
-	[IORING_OP_CLOSE] = {
-		.name			= "CLOSE",
-		.prep			= io_close_prep,
-		.issue			= io_close,
-	},
-	[IORING_OP_FILES_UPDATE] = {
-		.audit_skip		= 1,
-		.iopoll			= 1,
-		.name			= "FILES_UPDATE",
-		.prep			= io_files_update_prep,
-		.issue			= io_files_update,
-	},
-	[IORING_OP_STATX] = {
-		.audit_skip		= 1,
-		.name			= "STATX",
-		.prep			= io_statx_prep,
-		.issue			= io_statx,
-		.cleanup		= io_statx_cleanup,
-	},
-	[IORING_OP_READ] = {
-		.needs_file		= 1,
-		.unbound_nonreg_file	= 1,
-		.pollin			= 1,
-		.buffer_select		= 1,
-		.plug			= 1,
-		.audit_skip		= 1,
-		.ioprio			= 1,
-		.iopoll			= 1,
-		.async_size		= sizeof(struct io_async_rw),
-		.name			= "READ",
-		.prep			= io_prep_rw,
-		.issue			= io_read,
-	},
-	[IORING_OP_WRITE] = {
-		.needs_file		= 1,
-		.hash_reg_file		= 1,
-		.unbound_nonreg_file	= 1,
-		.pollout		= 1,
-		.plug			= 1,
-		.audit_skip		= 1,
-		.ioprio			= 1,
-		.iopoll			= 1,
-		.async_size		= sizeof(struct io_async_rw),
-		.name			= "WRITE",
-		.prep			= io_prep_rw,
-		.issue			= io_write,
-	},
-	[IORING_OP_FADVISE] = {
-		.needs_file		= 1,
-		.audit_skip		= 1,
-		.name			= "FADVISE",
-		.prep			= io_fadvise_prep,
-		.issue			= io_fadvise,
-	},
-	[IORING_OP_MADVISE] = {
-		.name			= "MADVISE",
-		.prep			= io_madvise_prep,
-		.issue			= io_madvise,
-	},
-	[IORING_OP_SEND] = {
-		.needs_file		= 1,
-		.unbound_nonreg_file	= 1,
-		.pollout		= 1,
-		.audit_skip		= 1,
-		.ioprio			= 1,
-		.name			= "SEND",
-#if defined(CONFIG_NET)
-		.prep			= io_sendmsg_prep,
-		.issue			= io_send,
-#else
-		.prep			= io_eopnotsupp_prep,
-#endif
-	},
-	[IORING_OP_RECV] = {
-		.needs_file		= 1,
-		.unbound_nonreg_file	= 1,
-		.pollin			= 1,
-		.buffer_select		= 1,
-		.audit_skip		= 1,
-		.ioprio			= 1,
-		.name			= "RECV",
-#if defined(CONFIG_NET)
-		.prep			= io_recvmsg_prep,
-		.issue			= io_recv,
-#else
-		.prep			= io_eopnotsupp_prep,
-#endif
-	},
-	[IORING_OP_OPENAT2] = {
-		.name			= "OPENAT2",
-		.prep			= io_openat2_prep,
-		.issue			= io_openat2,
-		.cleanup		= io_open_cleanup,
-	},
-	[IORING_OP_EPOLL_CTL] = {
-		.unbound_nonreg_file	= 1,
-		.audit_skip		= 1,
-		.name			= "EPOLL",
-#if defined(CONFIG_EPOLL)
-		.prep			= io_epoll_ctl_prep,
-		.issue			= io_epoll_ctl,
-#else
-		.prep			= io_eopnotsupp_prep,
-#endif
-	},
-	[IORING_OP_SPLICE] = {
-		.needs_file		= 1,
-		.hash_reg_file		= 1,
-		.unbound_nonreg_file	= 1,
-		.audit_skip		= 1,
-		.name			= "SPLICE",
-		.prep			= io_splice_prep,
-		.issue			= io_splice,
-	},
-	[IORING_OP_PROVIDE_BUFFERS] = {
-		.audit_skip		= 1,
-		.iopoll			= 1,
-		.name			= "PROVIDE_BUFFERS",
-		.prep			= io_provide_buffers_prep,
-		.issue			= io_provide_buffers,
-	},
-	[IORING_OP_REMOVE_BUFFERS] = {
-		.audit_skip		= 1,
-		.iopoll			= 1,
-		.name			= "REMOVE_BUFFERS",
-		.prep			= io_remove_buffers_prep,
-		.issue			= io_remove_buffers,
-	},
-	[IORING_OP_TEE] = {
-		.needs_file		= 1,
-		.hash_reg_file		= 1,
-		.unbound_nonreg_file	= 1,
-		.audit_skip		= 1,
-		.name			= "TEE",
-		.prep			= io_tee_prep,
-		.issue			= io_tee,
-	},
-	[IORING_OP_SHUTDOWN] = {
-		.needs_file		= 1,
-		.name			= "SHUTDOWN",
-#if defined(CONFIG_NET)
-		.prep			= io_shutdown_prep,
-		.issue			= io_shutdown,
-#else
-		.prep			= io_eopnotsupp_prep,
-#endif
-	},
-	[IORING_OP_RENAMEAT] = {
-		.name			= "RENAMEAT",
-		.prep			= io_renameat_prep,
-		.issue			= io_renameat,
-		.cleanup		= io_renameat_cleanup,
-	},
-	[IORING_OP_UNLINKAT] = {
-		.name			= "UNLINKAT",
-		.prep			= io_unlinkat_prep,
-		.issue			= io_unlinkat,
-		.cleanup		= io_unlinkat_cleanup,
-	},
-	[IORING_OP_MKDIRAT] = {
-		.name			= "MKDIRAT",
-		.prep			= io_mkdirat_prep,
-		.issue			= io_mkdirat,
-		.cleanup		= io_mkdirat_cleanup,
-	},
-	[IORING_OP_SYMLINKAT] = {
-		.name			= "SYMLINKAT",
-		.prep			= io_symlinkat_prep,
-		.issue			= io_symlinkat,
-		.cleanup		= io_link_cleanup,
-	},
-	[IORING_OP_LINKAT] = {
-		.name			= "LINKAT",
-		.prep			= io_linkat_prep,
-		.issue			= io_linkat,
-		.cleanup		= io_link_cleanup,
-	},
-	[IORING_OP_MSG_RING] = {
-		.needs_file		= 1,
-		.iopoll			= 1,
-		.name			= "MSG_RING",
-		.prep			= io_msg_ring_prep,
-		.issue			= io_msg_ring,
-	},
-	[IORING_OP_FSETXATTR] = {
-		.needs_file = 1,
-		.name			= "FSETXATTR",
-		.prep			= io_fsetxattr_prep,
-		.issue			= io_fsetxattr,
-		.cleanup		= io_xattr_cleanup,
-	},
-	[IORING_OP_SETXATTR] = {
-		.name			= "SETXATTR",
-		.prep			= io_setxattr_prep,
-		.issue			= io_setxattr,
-		.cleanup		= io_xattr_cleanup,
-	},
-	[IORING_OP_FGETXATTR] = {
-		.needs_file = 1,
-		.name			= "FGETXATTR",
-		.prep			= io_fgetxattr_prep,
-		.issue			= io_fgetxattr,
-		.cleanup		= io_xattr_cleanup,
-	},
-	[IORING_OP_GETXATTR] = {
-		.name			= "GETXATTR",
-		.prep			= io_getxattr_prep,
-		.issue			= io_getxattr,
-		.cleanup		= io_xattr_cleanup,
-	},
-	[IORING_OP_SOCKET] = {
-		.audit_skip		= 1,
-		.name			= "SOCKET",
-#if defined(CONFIG_NET)
-		.prep			= io_socket_prep,
-		.issue			= io_socket,
-#else
-		.prep			= io_eopnotsupp_prep,
-#endif
-	},
-	[IORING_OP_URING_CMD] = {
-		.needs_file		= 1,
-		.plug			= 1,
-		.name			= "URING_CMD",
-		.async_size		= uring_cmd_pdu_size(1),
-		.prep			= io_uring_cmd_prep,
-		.issue			= io_uring_cmd,
-		.prep_async		= io_uring_cmd_prep_async,
-	},
-};
-
 static int __init io_uring_init(void)
 {
-	int i;
-
 #define __BUILD_BUG_VERIFY_ELEMENT(stype, eoffset, etype, ename) do { \
 	BUILD_BUG_ON(offsetof(stype, ename) != eoffset); \
 	BUILD_BUG_ON(sizeof(etype) != sizeof_field(stype, ename)); \
@@ -4400,17 +3939,11 @@ static int __init io_uring_init(void)
 	BUILD_BUG_ON(SQE_COMMON_FLAGS >= (1 << 8));
 	BUILD_BUG_ON((SQE_VALID_FLAGS | SQE_COMMON_FLAGS) != SQE_VALID_FLAGS);
 
-	BUILD_BUG_ON(ARRAY_SIZE(io_op_defs) != IORING_OP_LAST);
 	BUILD_BUG_ON(__REQ_F_LAST_BIT > 8 * sizeof(int));
 
 	BUILD_BUG_ON(sizeof(atomic_t) != sizeof(u32));
 
-	for (i = 0; i < ARRAY_SIZE(io_op_defs); i++) {
-		BUG_ON(!io_op_defs[i].prep);
-		if (io_op_defs[i].prep != io_eopnotsupp_prep)
-			BUG_ON(!io_op_defs[i].issue);
-		WARN_ON_ONCE(!io_op_defs[i].name);
-	}
+	io_uring_optable_init();
 
 	req_cachep = KMEM_CACHE(io_kiocb, SLAB_HWCACHE_ALIGN | SLAB_PANIC |
 				SLAB_ACCOUNT);
diff --git a/io_uring/io_uring_types.h b/io_uring/io_uring_types.h
index 147e1e597530..fb87af5fd8e7 100644
--- a/io_uring/io_uring_types.h
+++ b/io_uring/io_uring_types.h
@@ -3,6 +3,8 @@
 
 #include <linux/blkdev.h>
 #include <linux/task_work.h>
+#include <linux/bitmap.h>
+#include <uapi/linux/io_uring.h>
 
 #include "io-wq.h"
 #include "filetable.h"
diff --git a/io_uring/opdef.c b/io_uring/opdef.c
new file mode 100644
index 000000000000..d687d33f9c0c
--- /dev/null
+++ b/io_uring/opdef.c
@@ -0,0 +1,495 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * io_uring opcode handling table
+ */
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/fs.h>
+#include <linux/file.h>
+#include <linux/io_uring.h>
+
+#include "io_uring_types.h"
+#include "io_uring.h"
+#include "opdef.h"
+#include "refs.h"
+#include "tctx.h"
+#include "sqpoll.h"
+#include "fdinfo.h"
+#include "kbuf.h"
+#include "rsrc.h"
+
+#include "xattr.h"
+#include "nop.h"
+#include "fs.h"
+#include "splice.h"
+#include "sync.h"
+#include "advise.h"
+#include "openclose.h"
+#include "uring_cmd.h"
+#include "epoll.h"
+#include "statx.h"
+#include "net.h"
+#include "msg_ring.h"
+#include "timeout.h"
+#include "poll.h"
+#include "cancel.h"
+#include "rw.h"
+
+static int io_no_issue(struct io_kiocb *req, unsigned int issue_flags)
+{
+	WARN_ON_ONCE(1);
+	return -ECANCELED;
+}
+
+static __maybe_unused int io_eopnotsupp_prep(struct io_kiocb *kiocb,
+					     const struct io_uring_sqe *sqe)
+{
+	return -EOPNOTSUPP;
+}
+
+const struct io_op_def io_op_defs[] = {
+	[IORING_OP_NOP] = {
+		.audit_skip		= 1,
+		.iopoll			= 1,
+		.name			= "NOP",
+		.prep			= io_nop_prep,
+		.issue			= io_nop,
+	},
+	[IORING_OP_READV] = {
+		.needs_file		= 1,
+		.unbound_nonreg_file	= 1,
+		.pollin			= 1,
+		.buffer_select		= 1,
+		.plug			= 1,
+		.audit_skip		= 1,
+		.ioprio			= 1,
+		.iopoll			= 1,
+		.async_size		= sizeof(struct io_async_rw),
+		.name			= "READV",
+		.prep			= io_prep_rw,
+		.issue			= io_read,
+		.prep_async		= io_readv_prep_async,
+		.cleanup		= io_readv_writev_cleanup,
+	},
+	[IORING_OP_WRITEV] = {
+		.needs_file		= 1,
+		.hash_reg_file		= 1,
+		.unbound_nonreg_file	= 1,
+		.pollout		= 1,
+		.plug			= 1,
+		.audit_skip		= 1,
+		.ioprio			= 1,
+		.iopoll			= 1,
+		.async_size		= sizeof(struct io_async_rw),
+		.name			= "WRITEV",
+		.prep			= io_prep_rw,
+		.issue			= io_write,
+		.prep_async		= io_writev_prep_async,
+		.cleanup		= io_readv_writev_cleanup,
+	},
+	[IORING_OP_FSYNC] = {
+		.needs_file		= 1,
+		.audit_skip		= 1,
+		.name			= "FSYNC",
+		.prep			= io_fsync_prep,
+		.issue			= io_fsync,
+	},
+	[IORING_OP_READ_FIXED] = {
+		.needs_file		= 1,
+		.unbound_nonreg_file	= 1,
+		.pollin			= 1,
+		.plug			= 1,
+		.audit_skip		= 1,
+		.ioprio			= 1,
+		.iopoll			= 1,
+		.async_size		= sizeof(struct io_async_rw),
+		.name			= "READ_FIXED",
+		.prep			= io_prep_rw,
+		.issue			= io_read,
+	},
+	[IORING_OP_WRITE_FIXED] = {
+		.needs_file		= 1,
+		.hash_reg_file		= 1,
+		.unbound_nonreg_file	= 1,
+		.pollout		= 1,
+		.plug			= 1,
+		.audit_skip		= 1,
+		.ioprio			= 1,
+		.iopoll			= 1,
+		.async_size		= sizeof(struct io_async_rw),
+		.name			= "WRITE_FIXED",
+		.prep			= io_prep_rw,
+		.issue			= io_write,
+	},
+	[IORING_OP_POLL_ADD] = {
+		.needs_file		= 1,
+		.unbound_nonreg_file	= 1,
+		.audit_skip		= 1,
+		.name			= "POLL_ADD",
+		.prep			= io_poll_add_prep,
+		.issue			= io_poll_add,
+	},
+	[IORING_OP_POLL_REMOVE] = {
+		.audit_skip		= 1,
+		.name			= "POLL_REMOVE",
+		.prep			= io_poll_remove_prep,
+		.issue			= io_poll_remove,
+	},
+	[IORING_OP_SYNC_FILE_RANGE] = {
+		.needs_file		= 1,
+		.audit_skip		= 1,
+		.name			= "SYNC_FILE_RANGE",
+		.prep			= io_sfr_prep,
+		.issue			= io_sync_file_range,
+	},
+	[IORING_OP_SENDMSG] = {
+		.needs_file		= 1,
+		.unbound_nonreg_file	= 1,
+		.pollout		= 1,
+		.ioprio			= 1,
+		.name			= "SENDMSG",
+#if defined(CONFIG_NET)
+		.async_size		= sizeof(struct io_async_msghdr),
+		.prep			= io_sendmsg_prep,
+		.issue			= io_sendmsg,
+		.prep_async		= io_sendmsg_prep_async,
+		.cleanup		= io_sendmsg_recvmsg_cleanup,
+#else
+		.prep			= io_eopnotsupp_prep,
+#endif
+	},
+	[IORING_OP_RECVMSG] = {
+		.needs_file		= 1,
+		.unbound_nonreg_file	= 1,
+		.pollin			= 1,
+		.buffer_select		= 1,
+		.ioprio			= 1,
+		.name			= "RECVMSG",
+#if defined(CONFIG_NET)
+		.async_size		= sizeof(struct io_async_msghdr),
+		.prep			= io_recvmsg_prep,
+		.issue			= io_recvmsg,
+		.prep_async		= io_recvmsg_prep_async,
+		.cleanup		= io_sendmsg_recvmsg_cleanup,
+#else
+		.prep			= io_eopnotsupp_prep,
+#endif
+	},
+	[IORING_OP_TIMEOUT] = {
+		.audit_skip		= 1,
+		.async_size		= sizeof(struct io_timeout_data),
+		.name			= "TIMEOUT",
+		.prep			= io_timeout_prep,
+		.issue			= io_timeout,
+	},
+	[IORING_OP_TIMEOUT_REMOVE] = {
+		/* used by timeout updates' prep() */
+		.audit_skip		= 1,
+		.name			= "TIMEOUT_REMOVE",
+		.prep			= io_timeout_remove_prep,
+		.issue			= io_timeout_remove,
+	},
+	[IORING_OP_ACCEPT] = {
+		.needs_file		= 1,
+		.unbound_nonreg_file	= 1,
+		.pollin			= 1,
+		.poll_exclusive		= 1,
+		.ioprio			= 1,	/* used for flags */
+		.name			= "ACCEPT",
+#if defined(CONFIG_NET)
+		.prep			= io_accept_prep,
+		.issue			= io_accept,
+#else
+		.prep			= io_eopnotsupp_prep,
+#endif
+	},
+	[IORING_OP_ASYNC_CANCEL] = {
+		.audit_skip		= 1,
+		.name			= "ASYNC_CANCEL",
+		.prep			= io_async_cancel_prep,
+		.issue			= io_async_cancel,
+	},
+	[IORING_OP_LINK_TIMEOUT] = {
+		.audit_skip		= 1,
+		.async_size		= sizeof(struct io_timeout_data),
+		.name			= "LINK_TIMEOUT",
+		.prep			= io_link_timeout_prep,
+		.issue			= io_no_issue,
+	},
+	[IORING_OP_CONNECT] = {
+		.needs_file		= 1,
+		.unbound_nonreg_file	= 1,
+		.pollout		= 1,
+		.name			= "CONNECT",
+#if defined(CONFIG_NET)
+		.async_size		= sizeof(struct io_async_connect),
+		.prep			= io_connect_prep,
+		.issue			= io_connect,
+		.prep_async		= io_connect_prep_async,
+#else
+		.prep			= io_eopnotsupp_prep,
+#endif
+	},
+	[IORING_OP_FALLOCATE] = {
+		.needs_file		= 1,
+		.name			= "FALLOCATE",
+		.prep			= io_fallocate_prep,
+		.issue			= io_fallocate,
+	},
+	[IORING_OP_OPENAT] = {
+		.name			= "OPENAT",
+		.prep			= io_openat_prep,
+		.issue			= io_openat,
+		.cleanup		= io_open_cleanup,
+	},
+	[IORING_OP_CLOSE] = {
+		.name			= "CLOSE",
+		.prep			= io_close_prep,
+		.issue			= io_close,
+	},
+	[IORING_OP_FILES_UPDATE] = {
+		.audit_skip		= 1,
+		.iopoll			= 1,
+		.name			= "FILES_UPDATE",
+		.prep			= io_files_update_prep,
+		.issue			= io_files_update,
+	},
+	[IORING_OP_STATX] = {
+		.audit_skip		= 1,
+		.name			= "STATX",
+		.prep			= io_statx_prep,
+		.issue			= io_statx,
+		.cleanup		= io_statx_cleanup,
+	},
+	[IORING_OP_READ] = {
+		.needs_file		= 1,
+		.unbound_nonreg_file	= 1,
+		.pollin			= 1,
+		.buffer_select		= 1,
+		.plug			= 1,
+		.audit_skip		= 1,
+		.ioprio			= 1,
+		.iopoll			= 1,
+		.async_size		= sizeof(struct io_async_rw),
+		.name			= "READ",
+		.prep			= io_prep_rw,
+		.issue			= io_read,
+	},
+	[IORING_OP_WRITE] = {
+		.needs_file		= 1,
+		.hash_reg_file		= 1,
+		.unbound_nonreg_file	= 1,
+		.pollout		= 1,
+		.plug			= 1,
+		.audit_skip		= 1,
+		.ioprio			= 1,
+		.iopoll			= 1,
+		.async_size		= sizeof(struct io_async_rw),
+		.name			= "WRITE",
+		.prep			= io_prep_rw,
+		.issue			= io_write,
+	},
+	[IORING_OP_FADVISE] = {
+		.needs_file		= 1,
+		.audit_skip		= 1,
+		.name			= "FADVISE",
+		.prep			= io_fadvise_prep,
+		.issue			= io_fadvise,
+	},
+	[IORING_OP_MADVISE] = {
+		.name			= "MADVISE",
+		.prep			= io_madvise_prep,
+		.issue			= io_madvise,
+	},
+	[IORING_OP_SEND] = {
+		.needs_file		= 1,
+		.unbound_nonreg_file	= 1,
+		.pollout		= 1,
+		.audit_skip		= 1,
+		.ioprio			= 1,
+		.name			= "SEND",
+#if defined(CONFIG_NET)
+		.prep			= io_sendmsg_prep,
+		.issue			= io_send,
+#else
+		.prep			= io_eopnotsupp_prep,
+#endif
+	},
+	[IORING_OP_RECV] = {
+		.needs_file		= 1,
+		.unbound_nonreg_file	= 1,
+		.pollin			= 1,
+		.buffer_select		= 1,
+		.audit_skip		= 1,
+		.ioprio			= 1,
+		.name			= "RECV",
+#if defined(CONFIG_NET)
+		.prep			= io_recvmsg_prep,
+		.issue			= io_recv,
+#else
+		.prep			= io_eopnotsupp_prep,
+#endif
+	},
+	[IORING_OP_OPENAT2] = {
+		.name			= "OPENAT2",
+		.prep			= io_openat2_prep,
+		.issue			= io_openat2,
+		.cleanup		= io_open_cleanup,
+	},
+	[IORING_OP_EPOLL_CTL] = {
+		.unbound_nonreg_file	= 1,
+		.audit_skip		= 1,
+		.name			= "EPOLL",
+#if defined(CONFIG_EPOLL)
+		.prep			= io_epoll_ctl_prep,
+		.issue			= io_epoll_ctl,
+#else
+		.prep			= io_eopnotsupp_prep,
+#endif
+	},
+	[IORING_OP_SPLICE] = {
+		.needs_file		= 1,
+		.hash_reg_file		= 1,
+		.unbound_nonreg_file	= 1,
+		.audit_skip		= 1,
+		.name			= "SPLICE",
+		.prep			= io_splice_prep,
+		.issue			= io_splice,
+	},
+	[IORING_OP_PROVIDE_BUFFERS] = {
+		.audit_skip		= 1,
+		.iopoll			= 1,
+		.name			= "PROVIDE_BUFFERS",
+		.prep			= io_provide_buffers_prep,
+		.issue			= io_provide_buffers,
+	},
+	[IORING_OP_REMOVE_BUFFERS] = {
+		.audit_skip		= 1,
+		.iopoll			= 1,
+		.name			= "REMOVE_BUFFERS",
+		.prep			= io_remove_buffers_prep,
+		.issue			= io_remove_buffers,
+	},
+	[IORING_OP_TEE] = {
+		.needs_file		= 1,
+		.hash_reg_file		= 1,
+		.unbound_nonreg_file	= 1,
+		.audit_skip		= 1,
+		.name			= "TEE",
+		.prep			= io_tee_prep,
+		.issue			= io_tee,
+	},
+	[IORING_OP_SHUTDOWN] = {
+		.needs_file		= 1,
+		.name			= "SHUTDOWN",
+#if defined(CONFIG_NET)
+		.prep			= io_shutdown_prep,
+		.issue			= io_shutdown,
+#else
+		.prep			= io_eopnotsupp_prep,
+#endif
+	},
+	[IORING_OP_RENAMEAT] = {
+		.name			= "RENAMEAT",
+		.prep			= io_renameat_prep,
+		.issue			= io_renameat,
+		.cleanup		= io_renameat_cleanup,
+	},
+	[IORING_OP_UNLINKAT] = {
+		.name			= "UNLINKAT",
+		.prep			= io_unlinkat_prep,
+		.issue			= io_unlinkat,
+		.cleanup		= io_unlinkat_cleanup,
+	},
+	[IORING_OP_MKDIRAT] = {
+		.name			= "MKDIRAT",
+		.prep			= io_mkdirat_prep,
+		.issue			= io_mkdirat,
+		.cleanup		= io_mkdirat_cleanup,
+	},
+	[IORING_OP_SYMLINKAT] = {
+		.name			= "SYMLINKAT",
+		.prep			= io_symlinkat_prep,
+		.issue			= io_symlinkat,
+		.cleanup		= io_link_cleanup,
+	},
+	[IORING_OP_LINKAT] = {
+		.name			= "LINKAT",
+		.prep			= io_linkat_prep,
+		.issue			= io_linkat,
+		.cleanup		= io_link_cleanup,
+	},
+	[IORING_OP_MSG_RING] = {
+		.needs_file		= 1,
+		.iopoll			= 1,
+		.name			= "MSG_RING",
+		.prep			= io_msg_ring_prep,
+		.issue			= io_msg_ring,
+	},
+	[IORING_OP_FSETXATTR] = {
+		.needs_file = 1,
+		.name			= "FSETXATTR",
+		.prep			= io_fsetxattr_prep,
+		.issue			= io_fsetxattr,
+		.cleanup		= io_xattr_cleanup,
+	},
+	[IORING_OP_SETXATTR] = {
+		.name			= "SETXATTR",
+		.prep			= io_setxattr_prep,
+		.issue			= io_setxattr,
+		.cleanup		= io_xattr_cleanup,
+	},
+	[IORING_OP_FGETXATTR] = {
+		.needs_file = 1,
+		.name			= "FGETXATTR",
+		.prep			= io_fgetxattr_prep,
+		.issue			= io_fgetxattr,
+		.cleanup		= io_xattr_cleanup,
+	},
+	[IORING_OP_GETXATTR] = {
+		.name			= "GETXATTR",
+		.prep			= io_getxattr_prep,
+		.issue			= io_getxattr,
+		.cleanup		= io_xattr_cleanup,
+	},
+	[IORING_OP_SOCKET] = {
+		.audit_skip		= 1,
+		.name			= "SOCKET",
+#if defined(CONFIG_NET)
+		.prep			= io_socket_prep,
+		.issue			= io_socket,
+#else
+		.prep			= io_eopnotsupp_prep,
+#endif
+	},
+	[IORING_OP_URING_CMD] = {
+		.needs_file		= 1,
+		.plug			= 1,
+		.name			= "URING_CMD",
+		.async_size		= uring_cmd_pdu_size(1),
+		.prep			= io_uring_cmd_prep,
+		.issue			= io_uring_cmd,
+		.prep_async		= io_uring_cmd_prep_async,
+	},
+};
+
+const char *io_uring_get_opcode(u8 opcode)
+{
+	if (opcode < IORING_OP_LAST)
+		return io_op_defs[opcode].name;
+	return "INVALID";
+}
+
+void __init io_uring_optable_init(void)
+{
+	int i;
+
+	BUILD_BUG_ON(ARRAY_SIZE(io_op_defs) != IORING_OP_LAST);
+
+	for (i = 0; i < ARRAY_SIZE(io_op_defs); i++) {
+		BUG_ON(!io_op_defs[i].prep);
+		if (io_op_defs[i].prep != io_eopnotsupp_prep)
+			BUG_ON(!io_op_defs[i].issue);
+		WARN_ON_ONCE(!io_op_defs[i].name);
+	}
+}
diff --git a/io_uring/opdef.h b/io_uring/opdef.h
index 4578adcdba8a..ece8ed4f96c4 100644
--- a/io_uring/opdef.h
+++ b/io_uring/opdef.h
@@ -37,4 +37,6 @@ struct io_op_def {
 };
 
 extern const struct io_op_def io_op_defs[];
+
+void io_uring_optable_init(void);
 #endif