[project @ 1998-12-02 13:17:09 by simonm]

[ghc-hetmet.git] / ghc / lib / misc / cbits / readDescriptor.c

diff --git a/ghc/lib/misc/cbits/readDescriptor.c b/ghc/lib/misc/cbits/readDescriptor.c
index bfc26cb..d535898 100644 (file)
--- a/ghc/lib/misc/cbits/readDescriptor.c
+++ b/ghc/lib/misc/cbits/readDescriptor.c
@@ -8,8 +8,9 @@
 #endif
 
 #define NON_POSIX_SOURCE
-#include "rtsdefs.h"
+#include "Rts.h"
 #include "ghcSockets.h"
+#include "stgio.h"
 
 StgInt
 readDescriptor(I_ fd, A_ buf, I_ nbytes)
@@ -19,7 +20,40 @@ readDescriptor(I_ fd, A_ buf, I_ nbytes)
     while ((sucked = read((int) fd, (char *) buf, (int) nbytes)) < 0) {
       if (errno != EINTR) {
          cvtErrno();
-         stdErrno();
+         switch (ghc_errno) {
+         default:
+             stdErrno();
+             break;
+         case GHC_EBADF:
+                     ghc_errtype = ERR_INVALIDARGUMENT;
+              ghc_errstr  = "Not a valid write descriptor";
+             break;
+         case GHC_EBADMSG:
+                     ghc_errtype = ERR_SYSTEMERROR;
+              ghc_errstr  = "Message waiting to be read is not a data message";
+             break;
+         case GHC_EFAULT:
+                     ghc_errtype = ERR_INVALIDARGUMENT;
+              ghc_errstr  = "Data buffer not in writeable part of user address space";
+             break;
+         case GHC_EINVAL:
+             ghc_errtype = ERR_INVALIDARGUMENT;
+             ghc_errstr  = "Seek pointer associated with descriptor negative";
+             break;
+         case GHC_EIO:
+             ghc_errtype = ERR_SYSTEMERROR;
+             ghc_errstr  = "I/O error occurred while writing to file system";
+             break;
+         case GHC_EISDIR:
+             ghc_errtype = ERR_INAPPROPRIATETYPE;
+             ghc_errstr  = "Descriptor refers to a directory";
+             break;
+         case GHC_EAGAIN:
+         case GHC_EWOULDBLOCK:
+             ghc_errtype = ERR_OTHERERROR;
+             ghc_errstr  = "No data could be written immediately";
+             break;
+         }
          return -1;
       }
     }