Merge remote-tracking branch 'remotes/mcayland/tags/qemu-macppc-20210113' into staging

[mirror_qemu.git] / fsdev / file-op-9p.h

diff --git a/fsdev/file-op-9p.h b/fsdev/file-op-9p.h
index 1e96c8bed93c9942b63d98914ab6ee5ca84aa693..42f677cf38c2d2002868a476e9870eafd79df839 100644 (file)
--- a/fsdev/file-op-9p.h
+++ b/fsdev/file-op-9p.h
@@ -1,5 +1,5 @@
 /*
- * Virtio 9p
+ * 9p
  *
  * Copyright IBM, Corp. 2010
  *
@@ -10,35 +10,31 @@
  * the COPYING file in the top-level directory.
  *
  */
-#ifndef _FILEOP_H
-#define _FILEOP_H
-#include <sys/types.h>
+
+#ifndef FILE_OP_9P_H
+#define FILE_OP_9P_H
+
 #include <dirent.h>
-#include <sys/time.h>
 #include <utime.h>
-#include <sys/stat.h>
-#include <sys/uio.h>
 #include <sys/vfs.h>
+#include "qemu-fsdev-throttle.h"
 
 #define SM_LOCAL_MODE_BITS    0600
 #define SM_LOCAL_DIR_MODE_BITS    0700
 
-typedef struct FsCred
-{
+typedef struct FsCred {
     uid_t   fc_uid;
     gid_t   fc_gid;
     mode_t  fc_mode;
     dev_t   fc_rdev;
 } FsCred;
 
-struct xattr_operations;
-struct FsContext;
-struct V9fsPath;
+typedef struct FsContext FsContext;
+typedef struct V9fsPath V9fsPath;
 
-typedef struct extended_ops {
-    int (*get_st_gen)(struct FsContext *, struct V9fsPath *,
-                      mode_t, uint64_t *);
-} extended_ops;
+typedef struct ExtendedOps {
+    int (*get_st_gen)(FsContext *, V9fsPath *, mode_t, uint64_t *);
+} ExtendedOps;
 
 /* export flags */
 #define V9FS_IMMEDIATE_WRITEOUT     0x00000001
@@ -56,14 +52,29 @@ typedef struct extended_ops {
  * On failure ignore the error.
  */
 #define V9FS_SM_NONE                0x00000010
-#define V9FS_RDONLY                 0x00000020
-#define V9FS_PROXY_SOCK_FD          0x00000040
-#define V9FS_PROXY_SOCK_NAME        0x00000080
+/*
+ * uid/gid part of .virtfs_meatadata namespace
+ */
+#define V9FS_SM_MAPPED_FILE         0x00000020
+#define V9FS_RDONLY                 0x00000040
+#define V9FS_PROXY_SOCK_FD          0x00000080
+#define V9FS_PROXY_SOCK_NAME        0x00000100
+/*
+ * multidevs option (either one of the two applies exclusively)
+ */
+#define V9FS_REMAP_INODES           0x00000200
+#define V9FS_FORBID_MULTIDEVS       0x00000400
+/*
+ * Disables certain performance warnings from being logged on host side.
+ */
+#define V9FS_NO_PERF_WARN           0x00000800
 
-#define V9FS_SEC_MASK               0x0000001C
+#define V9FS_SEC_MASK               0x0000003C
 
 
 typedef struct FileOperations FileOperations;
+typedef struct XattrOperations XattrOperations;
+
 /*
  * Structure to store the various fsdev's passed through command line.
  */
@@ -72,32 +83,37 @@ typedef struct FsDriverEntry {
     char *path;
     int export_flags;
     FileOperations *ops;
+    FsThrottle fst;
+    mode_t fmode;
+    mode_t dmode;
 } FsDriverEntry;
 
-typedef struct FsContext
-{
+struct FsContext {
     uid_t uid;
     char *fs_root;
     int export_flags;
-    struct xattr_operations **xops;
-    struct extended_ops exops;
+    XattrOperations **xops;
+    ExtendedOps exops;
+    FsThrottle *fst;
     /* fs driver specific data */
     void *private;
-} FsContext;
+    mode_t fmode;
+    mode_t dmode;
+};
 
-typedef struct V9fsPath {
+struct V9fsPath {
     uint16_t size;
     char *data;
-} V9fsPath;
+};
 
 typedef union V9fsFidOpenState V9fsFidOpenState;
 
 void cred_init(FsCred *);
 
-struct FileOperations
-{
-    int (*parse_opts)(QemuOpts *, struct FsDriverEntry *);
-    int (*init)(struct FsContext *);
+struct FileOperations {
+    int (*parse_opts)(QemuOpts *, FsDriverEntry *, Error **errp);
+    int (*init)(FsContext *, Error **errp);
+    void (*cleanup)(FsContext *);
     int (*lstat)(FsContext *, V9fsPath *, struct stat *);
     ssize_t (*readlink)(FsContext *, V9fsPath *, char *, size_t);
     int (*chmod)(FsContext *, V9fsPath *, FsCred *);
@@ -117,8 +133,7 @@ struct FileOperations
                  int, FsCred *, V9fsFidOpenState *);
     void (*rewinddir)(FsContext *, V9fsFidOpenState *);
     off_t (*telldir)(FsContext *, V9fsFidOpenState *);
-    int (*readdir_r)(FsContext *, V9fsFidOpenState *,
-                     struct dirent *, struct dirent **);
+    struct dirent * (*readdir)(FsContext *, V9fsFidOpenState *);
     void (*seekdir)(FsContext *, V9fsFidOpenState *, off_t);
     ssize_t (*preadv)(FsContext *, V9fsFidOpenState *,
                       const struct iovec *, int, off_t);
@@ -140,7 +155,6 @@ struct FileOperations
     int (*renameat)(FsContext *ctx, V9fsPath *olddir, const char *old_name,
                     V9fsPath *newdir, const char *new_name);
     int (*unlinkat)(FsContext *ctx, V9fsPath *dir, const char *name, int flags);
-    void *opaque;
 };
 
 #endif