io_uring: add io_uring_get_opcode

In some debug scenarios it is useful to have the text representation of
the opcode. Add this function in preparation.

Signed-off-by: Dylan Yudaken <dylany@fb.com>
Link: https://lore.kernel.org/r/20220426082907.3600028-3-dylany@fb.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>

diff --git a/fs/io_uring.c b/fs/io_uring.c
index bf95ef9240e51fd87b93b216850ce99046e6c2a8..dfebbf3a272a310aa7786c3fd5b02465081c9156 100644 (file)
--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -1285,6 +1285,107 @@ static struct kmem_cache *req_cachep;
 
 static const struct file_operations io_uring_fops;
 
+const char *io_uring_get_opcode(u8 opcode)
+{
+       switch ((enum io_uring_op)opcode) {
+       case IORING_OP_NOP:
+               return "NOP";
+       case IORING_OP_READV:
+               return "READV";
+       case IORING_OP_WRITEV:
+               return "WRITEV";
+       case IORING_OP_FSYNC:
+               return "FSYNC";
+       case IORING_OP_READ_FIXED:
+               return "READ_FIXED";
+       case IORING_OP_WRITE_FIXED:
+               return "WRITE_FIXED";
+       case IORING_OP_POLL_ADD:
+               return "POLL_ADD";
+       case IORING_OP_POLL_REMOVE:
+               return "POLL_REMOVE";
+       case IORING_OP_SYNC_FILE_RANGE:
+               return "SYNC_FILE_RANGE";
+       case IORING_OP_SENDMSG:
+               return "SENDMSG";
+       case IORING_OP_RECVMSG:
+               return "RECVMSG";
+       case IORING_OP_TIMEOUT:
+               return "TIMEOUT";
+       case IORING_OP_TIMEOUT_REMOVE:
+               return "TIMEOUT_REMOVE";
+       case IORING_OP_ACCEPT:
+               return "ACCEPT";
+       case IORING_OP_ASYNC_CANCEL:
+               return "ASYNC_CANCEL";
+       case IORING_OP_LINK_TIMEOUT:
+               return "LINK_TIMEOUT";
+       case IORING_OP_CONNECT:
+               return "CONNECT";
+       case IORING_OP_FALLOCATE:
+               return "FALLOCATE";
+       case IORING_OP_OPENAT:
+               return "OPENAT";
+       case IORING_OP_CLOSE:
+               return "CLOSE";
+       case IORING_OP_FILES_UPDATE:
+               return "FILES_UPDATE";
+       case IORING_OP_STATX:
+               return "STATX";
+       case IORING_OP_READ:
+               return "READ";
+       case IORING_OP_WRITE:
+               return "WRITE";
+       case IORING_OP_FADVISE:
+               return "FADVISE";
+       case IORING_OP_MADVISE:
+               return "MADVISE";
+       case IORING_OP_SEND:
+               return "SEND";
+       case IORING_OP_RECV:
+               return "RECV";
+       case IORING_OP_OPENAT2:
+               return "OPENAT2";
+       case IORING_OP_EPOLL_CTL:
+               return "EPOLL_CTL";
+       case IORING_OP_SPLICE:
+               return "SPLICE";
+       case IORING_OP_PROVIDE_BUFFERS:
+               return "PROVIDE_BUFFERS";
+       case IORING_OP_REMOVE_BUFFERS:
+               return "REMOVE_BUFFERS";
+       case IORING_OP_TEE:
+               return "TEE";
+       case IORING_OP_SHUTDOWN:
+               return "SHUTDOWN";
+       case IORING_OP_RENAMEAT:
+               return "RENAMEAT";
+       case IORING_OP_UNLINKAT:
+               return "UNLINKAT";
+       case IORING_OP_MKDIRAT:
+               return "MKDIRAT";
+       case IORING_OP_SYMLINKAT:
+               return "SYMLINKAT";
+       case IORING_OP_LINKAT:
+               return "LINKAT";
+       case IORING_OP_MSG_RING:
+               return "MSG_RING";
+       case IORING_OP_FSETXATTR:
+               return "FSETXATTR";
+       case IORING_OP_SETXATTR:
+               return "SETXATTR";
+       case IORING_OP_FGETXATTR:
+               return "FGETXATTR";
+       case IORING_OP_GETXATTR:
+               return "GETXATTR";
+       case IORING_OP_SOCKET:
+               return "SOCKET";
+       case IORING_OP_LAST:
+               return "INVALID";
+       }
+       return "INVALID";
+}
+
 struct sock *io_uring_get_socket(struct file *file)
 {
 #if defined(CONFIG_UNIX)

diff --git a/include/linux/io_uring.h b/include/linux/io_uring.h
index 1814e698d86115910cdc4b766ffc7f6fd09a9c3f..24651c229ed290f8df107be3d0f059556dd17208 100644 (file)
--- a/include/linux/io_uring.h
+++ b/include/linux/io_uring.h
@@ -10,6 +10,7 @@ struct sock *io_uring_get_socket(struct file *file);
 void __io_uring_cancel(bool cancel_all);
 void __io_uring_free(struct task_struct *tsk);
 void io_uring_unreg_ringfd(void);
+const char *io_uring_get_opcode(u8 opcode);
 
 static inline void io_uring_files_cancel(void)
 {
@@ -42,6 +43,10 @@ static inline void io_uring_files_cancel(void)
 static inline void io_uring_free(struct task_struct *tsk)
 {
 }
+static inline const char *io_uring_get_opcode(u8 opcode)
+{
+       return "";
+}
 #endif
 
 #endif