ui: track how much decoded data we consumed when doing SASL encoding

[qemu.git] / nbd / common.c

diff --git a/nbd/common.c b/nbd/common.c
index 7456021f7ef4b598902115a3124524ab45f9023f..6047d717489b85be4e6d8984c46b4bf6887a904d 100644 (file)
--- a/nbd/common.c
+++ b/nbd/common.c
@@ -18,6 +18,7 @@
 
 #include "qemu/osdep.h"
 #include "qapi/error.h"
+#include "trace.h"
 #include "nbd-internal.h"
 
 /* Discard length bytes from channel.  Return -errno on failure and 0 on
@@ -150,6 +151,28 @@ const char *nbd_cmd_lookup(uint16_t cmd)
 }
 
 
+const char *nbd_reply_type_lookup(uint16_t type)
+{
+    switch (type) {
+    case NBD_REPLY_TYPE_NONE:
+        return "none";
+    case NBD_REPLY_TYPE_OFFSET_DATA:
+        return "data";
+    case NBD_REPLY_TYPE_OFFSET_HOLE:
+        return "hole";
+    case NBD_REPLY_TYPE_ERROR:
+        return "generic error";
+    case NBD_REPLY_TYPE_ERROR_OFFSET:
+        return "error at offset";
+    default:
+        if (type & (1 << 15)) {
+            return "<unknown error>";
+        }
+        return "<unknown>";
+    }
+}
+
+
 const char *nbd_err_lookup(int err)
 {
     switch (err) {
@@ -165,9 +188,47 @@ const char *nbd_err_lookup(int err)
         return "EINVAL";
     case NBD_ENOSPC:
         return "ENOSPC";
+    case NBD_EOVERFLOW:
+        return "EOVERFLOW";
     case NBD_ESHUTDOWN:
         return "ESHUTDOWN";
     default:
         return "<unknown>";
     }
 }
+
+
+int nbd_errno_to_system_errno(int err)
+{
+    int ret;
+    switch (err) {
+    case NBD_SUCCESS:
+        ret = 0;
+        break;
+    case NBD_EPERM:
+        ret = EPERM;
+        break;
+    case NBD_EIO:
+        ret = EIO;
+        break;
+    case NBD_ENOMEM:
+        ret = ENOMEM;
+        break;
+    case NBD_ENOSPC:
+        ret = ENOSPC;
+        break;
+    case NBD_EOVERFLOW:
+        ret = EOVERFLOW;
+        break;
+    case NBD_ESHUTDOWN:
+        ret = ESHUTDOWN;
+        break;
+    default:
+        trace_nbd_unknown_error(err);
+        /* fallthrough */
+    case NBD_EINVAL:
+        ret = EINVAL;
+        break;
+    }
+    return ret;
+}