Report EMSGSIZE when appropriate for sendmsg

src/trusted/desc/nacl_desc_imc.c

 /*
  * Copyright 2008 The Native Client Authors. All rights reserved.
  * Use of this source code is governed by a BSD-style license that can
  * be found in the LICENSE file.
  */
 
 /*
  * NaCl Service Runtime.  I/O Descriptor / Handle abstraction.
  */
 
@@ skipping 184 matching lines @@
   int result;
 
   NaClXMutexLock(&self->sendmsg_mu);
   result = NaClSendDatagram(self->base.h, dgram, flags);
   NaClXMutexUnlock(&self->sendmsg_mu);
 
   if (-1 == result) {
 #if NACL_WINDOWS
     return -NaClXlateSystemError(GetLastError());
 #elif NACL_LINUX || NACL_OSX
-    return -errno;
+    return -NaClXlateErrno(errno);
 #else
 # error "Unknown target platform: cannot translate error code(s) from SendMsg"
 #endif
   }
   return result;
 }
 
 
 /*
  * NaClDescXferableDataDescSendMsg implements imc_sendmsg For
@@ skipping 32 matching lines @@
              " non-zero handle_count\n"));
     return -NACL_ABI_EINVAL;
   }
 
   result = NaClSendDatagram(self->base.h, dgram, flags);
 
   if (-1 == result) {
 #if NACL_WINDOWS
     return -NaClXlateSystemError(GetLastError());
 #elif NACL_LINUX || NACL_OSX
-    return -errno;
+    return -NaClXlateErrno(errno);
 #else
 # error "Unknown target platform: cannot translate error code(s) from SendMsg"
 #endif
   }
   return result;
 }
 
 
 /*
  * See discussion at NaClDescImcDescSendMsg for details.  An
@@ skipping 198 matching lines @@
   *xfer->next_handle++ = NACL_INVALID_HANDLE;
   *baseptr = (struct NaClDesc *) ndxdp;
   rv = 0;
 
 cleanup:
   if (rv < 0) {
     free(ndxdp);
   }
   return rv;
 }