ENH: Convert errno to string error message

apache · Nov 1, 2017 · db7ef3a · db7ef3a
1 parent 6ed9287
commit db7ef3a
Showing 1 changed file with 4 additions and 4 deletions.
diff --git a/cpp/src/arrow/io/file.cc b/cpp/src/arrow/io/file.cc
@@ -267,8 +267,8 @@ static inline Status FileRead(int fd, uint8_t* buffer, int64_t nbytes,
 #endif
 
   if (*bytes_read == -1) {
-    // TODO(wesm): errno to string
-    return Status::IOError("Error reading bytes from file");
+    return Status::IOError(std::string("Error reading bytes from file: ") +
+                           std::string(strerror(errno)));
   }
 
   return Status::OK();
@@ -293,8 +293,8 @@ static inline Status FileWrite(int fd, const uint8_t* buffer, int64_t nbytes) {
 #endif
 
   if (ret == -1) {
-    // TODO(wesm): errno to string
-    return Status::IOError("Error writing bytes to file");
+    return Status::IOError(std::string("Error writing bytes from file: ") +
+                           std::string(strerror(errno)));
   }
   return Status::OK();
 }