1. 添加处理rpc返回值的宏，将其转化为Result类型方便处理，将rpc过来ret值如实返还给sys

src/lib.rs

@@ -7,10 +7,9 @@ use lws_client::{
 use serde_json::{self, Value};
 use std::error::Error;
 use std::ffi::OsStr;
-use std::fs::File;
 use std::io::{Error as IoError, ErrorKind, Read as IoRead};
-use std::thread::{self, JoinHandle};
+use std::thread::{self};
-use std::{env, path, vec};
+use std::{env, vec};
 use tokio::runtime::{Builder, Runtime};
 use tonic::transport::Channel as RpcChannel;
 extern crate log;
@@ -432,6 +431,14 @@ pub struct LwsVfsIns {
     cache: FileAttrCacheManager,
 }
 
+macro_rules! ret2result {
+    ($ret:expr) => {
+        match $ret {
+            0 => Ok(()),
+            _ => Err($ret),
+        }
+    };
+}
 fn mode_to_filetype(mode: libc::mode_t) -> FileType {
     match mode & libc::S_IFMT {
         libc::S_IFDIR => FileType::Directory,
@@ -541,8 +548,8 @@ impl FilesystemMT for LwsVfsIns {
         };
         log::trace!("get resp: {:?}", resp);
         if resp.ret != 0 {
-            self.cache.set(&path, Err(libc::ENOENT));
+            self.cache.set(&path, Err(resp.ret));
-            return Err(libc::ENOENT);
+            return Err(resp.ret);
         }
         let attr = file_attr(&resp.stat.unwrap(), &req);
         self.cache.set(&path, Ok(attr.clone()));
@@ -606,10 +613,7 @@ impl FilesystemMT for LwsVfsIns {
             }
         };
         log::trace!("get resp: {:?}", resp);
-        if resp.ret != 0 {
+        ret2result!(resp.ret)
-            return Err(libc::ENOMSG);
-        }
-        Ok(())
     }
 
     /// Set timestamps of a filesystem entry.
@@ -666,10 +670,7 @@ impl FilesystemMT for LwsVfsIns {
             }
         };
         log::trace!("get resp: {:?}", resp);
-        if resp.ret != 0 {
+        ret2result!(resp.ret)
-            return Err(libc::ENOMSG);
-        }
-        Ok(())
     }
 
     // END OF SETATTR FUNCTIONS
@@ -732,7 +733,7 @@ impl FilesystemMT for LwsVfsIns {
         };
         log::trace!("get resp: {:?}", resp);
         if resp.ret != 0 {
-            return Err(libc::ENOMSG);
+            return Err(resp.ret)
         }
         self.getattr(req, Path::new(&path), None)
     }
@@ -768,10 +769,7 @@ impl FilesystemMT for LwsVfsIns {
         };
         self.cache.clr(vec![path]);
         log::trace!("get resp: {:?}", resp);
-        if resp.ret != 0 {
+        ret2result!(resp.ret)
-            return Err(libc::ENOMSG);
-        }
-        Ok(())
     }
 
     /// Remove a directory.
@@ -807,10 +805,7 @@ impl FilesystemMT for LwsVfsIns {
             }
         };
         log::trace!("get resp: {:?}", resp);
-        if resp.ret != 0 {
+        ret2result!(resp.ret)
-            return Err(libc::ENOMSG);
-        }
-        Ok(())
     }
 
     /// Create a symbolic link.
@@ -870,10 +865,7 @@ impl FilesystemMT for LwsVfsIns {
             }
         };
         log::trace!("get resp: {:?}", resp);
-        if resp.ret != 0 {
+        ret2result!(resp.ret)
-            return Err(libc::ENOMSG);
-        }
-        Ok(())
     }
 
     /// Create a hard link.
@@ -929,7 +921,7 @@ impl FilesystemMT for LwsVfsIns {
         };
         log::trace!("get resp: {:?}", resp);
         if resp.ret != 0 {
-            return Err(libc::ENOMSG);
+            return Err(resp.ret)
         }
         let fi = resp.fi.unwrap();
         Ok((fi.fh, fi.flags))
@@ -989,7 +981,7 @@ impl FilesystemMT for LwsVfsIns {
         };
         log::trace!("get fread resp size is: {}", resp.size);
         if resp.ret != 0 {
-            return callback(Err(libc::ENOMSG));
+            return callback(Err(resp.ret));
         }
         callback(Ok(&resp.buff))
     }
@@ -1044,7 +1036,7 @@ impl FilesystemMT for LwsVfsIns {
         };
         log::trace!("get resp: {:?}", resp);
         if resp.ret != 0 {
-            return Err(libc::ENOMSG);
+            return Err(resp.ret)
         }
         Ok(resp.size as u32)
     }
@@ -1089,10 +1081,7 @@ impl FilesystemMT for LwsVfsIns {
             }
         };
         log::trace!("get resp: {:?}", resp);
-        if resp.ret != 0 {
+        ret2result!(resp.ret)
-            return Err(libc::ENOMSG);
-        }
-        Ok(())
     }
 
     /// Called when an open file is closed.
@@ -1145,11 +1134,8 @@ impl FilesystemMT for LwsVfsIns {
             }
         };
         log::trace!("get resp: {:?}", resp);
-        if resp.ret != 0 {
+        ret2result!(resp.ret)
-            return Err(libc::ENOMSG);
-        }
         // self.cache.clr(vec![path]);
-        Ok(())
     }
 
     /// Write out any pending changes of a file.
@@ -1203,7 +1189,7 @@ impl FilesystemMT for LwsVfsIns {
         };
         log::trace!("get resp: {:?}", resp);
         if resp.ret != 0 {
-            return Err(libc::ENOMSG);
+            return Err(resp.ret);
         }
         Ok((resp.fi.unwrap().fh, flags))
     }
@@ -1268,7 +1254,7 @@ impl FilesystemMT for LwsVfsIns {
         };
         log::trace!("get resp: {:?}", resp);
         if resp.ret != 0 {
-            return Err(libc::ENOMSG);
+            return Err(resp.ret)
         }
         let mut dirs = vec![];
         // let clrs: Vec<String> = resp.dirs.iter().map(|dir| dir.name.clone().into()).collect();
@@ -1321,10 +1307,7 @@ impl FilesystemMT for LwsVfsIns {
             }
         };
         log::trace!("get resp: {:?}", resp);
-        if resp.ret != 0 {
+        ret2result!(resp.ret)
-            return Err(libc::ENOMSG);
-        }
-        Ok(())
     }
 
     /// Write out any pending changes to a directory.
@@ -1444,10 +1427,7 @@ impl FilesystemMT for LwsVfsIns {
             }
         };
         log::trace!("get resp: {:?}", resp);
-        if resp.ret != 0 {
+        ret2result!(resp.ret)
-            return Err(libc::EACCES);
-        }
-        Ok(())
     }
 
     /// Create and open a new file.
@@ -1501,15 +1481,17 @@ impl FilesystemMT for LwsVfsIns {
         }
         self.cache.clr(vec![path.to_string()]);
         let fi = resp.fi.unwrap();
-        if let Ok((ttl, attr)) = self.getattr(req, Path::new(&path), Some(fi.fh)) {
+        match self.getattr(req, Path::new(&path), Some(fi.fh)) {
-            return Ok(CreatedEntry {
+            Ok((ttl, attr)) => {
+                Ok(CreatedEntry {
                     fh: fi.fh,
                     flags,
                     attr,
                     ttl,
-            });
+                })
+            },
+            Err(e) => Err(e),
         }
-        Err(libc::ENOMSG)
     }
 }
 
@@ -1594,7 +1576,15 @@ impl LwsVfsIns {
     where
         F: FilesystemMT + Sync + Send + 'static,
     {
-        let fuse_args = [OsStr::new("-o"), OsStr::new("fsname=lws_vfs")];
+        let user = match env::var("USER") {
+            Ok(user) => user,
+            Err(_) => {
+                log::warn!("Can not get user name, use 'unknown'");
+                "unknown".to_string()
+            },
+        };
+        let name = format!("fsname=lws_vfs@{}", user);
+        let fuse_args = [OsStr::new("-o"), OsStr::new(name.as_str())];
         fuse_mt::mount(
             fuse_mt::FuseMT::new(file_system, 10),
             &mount_point,