Update sys/errno.h from FreeBSD

This is SVN revision 229286 from FreeBSD 9.0.0, with the RISC OS-isms left at the top.
The numbers for EDOM, ERANGE, and EILSEQ are redefined if already defined, to sidestep clashes with those defined by ISO9899.

Version 5.57. Tagged as 'TCPIPLibs-5_57'

VersionNum

-/* (5.56)
+/* (5.57)
  *
  * This file is automatically maintained by srccommit, do not edit manually.
  * Last processed by srccommit version: 1.1.
  *
  */
-#define Module_MajorVersion_CMHG        5.56
+#define Module_MajorVersion_CMHG        5.57
 #define Module_MinorVersion_CMHG        
-#define Module_Date_CMHG                26 Aug 2012
+#define Module_Date_CMHG                26 May 2013
 
-#define Module_MajorVersion             "5.56"
-#define Module_Version                  556
+#define Module_MajorVersion             "5.57"
+#define Module_Version                  557
 #define Module_MinorVersion             ""
-#define Module_Date                     "26 Aug 2012"
+#define Module_Date                     "26 May 2013"
 
-#define Module_ApplicationDate          "26-Aug-12"
+#define Module_ApplicationDate          "26-May-13"
 
 #define Module_ComponentName            "TCPIPLibs"
 #define Module_ComponentPath            "mixed/RiscOS/Sources/Lib/TCPIPLibs"
 
-#define Module_FullVersion              "5.56"
-#define Module_HelpVersion              "5.56 (26 Aug 2012)"
-#define Module_LibraryVersionInfo       "5:56"
+#define Module_FullVersion              "5.57"
+#define Module_HelpVersion              "5.57 (26 May 2013)"
+#define Module_LibraryVersionInfo       "5:57"

headers/sys/h/errno

-/*
+/*-
  * Copyright (c) 1982, 1986, 1989, 1993
  *	The Regents of the University of California.  All rights reserved.
  * (c) UNIX System Laboratories, Inc.
@@ -52,7 +52,7 @@ extern int errno;			/* global error number */
 extern _kernel_oserror _inet_error;
 
 /*
- * this function returns the last error string
+ * This function returns the last error string
  * returned from the Internet module
  */
 extern char *_inet_err(void);
@@ -95,7 +95,7 @@ extern char *_inet_err(void);
 #define	EFBIG		27		/* File too large */
 #define	ENOSPC		28		/* No space left on device */
 #define	ESPIPE		29		/* Illegal seek */
-#define	EROFS		30		/* Read-only file system */
+#define	EROFS		30		/* Read-only filesystem */
 #define	EMLINK		31		/* Too many links */
 #define	EPIPE		32		/* Broken pipe */
 
@@ -123,9 +123,10 @@ extern char *_inet_err(void);
 #define	EMSGSIZE	40		/* Message too long */
 #define	EPROTOTYPE	41		/* Protocol wrong type for socket */
 #define	ENOPROTOOPT	42		/* Protocol not available */
-#define	EPROTONOSUPPORT 43		/* Protocol not supported */
-#define	ESOCKTNOSUPPORT 44		/* Socket type not supported */
+#define	EPROTONOSUPPORT	43		/* Protocol not supported */
+#define	ESOCKTNOSUPPORT	44		/* Socket type not supported */
 #define	EOPNOTSUPP	45		/* Operation not supported */
+#define	ENOTSUP		EOPNOTSUPP	/* Operation not supported */
 #define	EPFNOSUPPORT	46		/* Protocol family not supported */
 #define	EAFNOSUPPORT	47		/* Address family not supported by protocol family */
 #define	EADDRINUSE	48		/* Address already in use */
@@ -142,7 +143,7 @@ extern char *_inet_err(void);
 #define	ENOTCONN	57		/* Socket is not connected */
 #define	ESHUTDOWN	58		/* Can't send after socket shutdown */
 #define	ETOOMANYREFS	59		/* Too many references: can't splice */
-#define	ETIMEDOUT	60		/* Connection timed out */
+#define	ETIMEDOUT	60		/* Operation timed out */
 #define	ECONNREFUSED	61		/* Connection refused */
 
 #define	ELOOP		62		/* Too many levels of symbolic links */
@@ -179,13 +180,39 @@ extern char *_inet_err(void);
 #define	EFTYPE		79		/* Inappropriate file type or format */
 #define	EAUTH		80		/* Authentication error */
 #define	ENEEDAUTH	81		/* Need authenticator */
-#define	ELAST		81		/* Must be equal largest errno */
+#define	EIDRM		82		/* Identifier removed */
+#define	ENOMSG		83		/* No message of desired type */
+#define	EOVERFLOW	84		/* Value too large to be stored in data type */
+#define	ECANCELED	85		/* Operation canceled */
+#ifdef EILSEQ				/* get rid of ANSI define */
+#undef EILSEQ
+#endif
+#define	EILSEQ		86		/* Illegal byte sequence */
+#define	ENOATTR		87		/* Attribute not found */
+
+#define	EDOOFUS		88		/* Programming error */
+#endif /* _POSIX_SOURCE */
+
+#define	EBADMSG		89		/* Bad message */
+#define	EMULTIHOP	90		/* Multihop attempted */
+#define	ENOLINK		91		/* Link has been severed */
+#define	EPROTO		92		/* Protocol error */
+
+#ifndef _POSIX_SOURCE
+#define	ENOTCAPABLE	93		/* Capabilities insufficient */
+#define	ECAPMODE	94		/* Not permitted in capability mode */
+#endif /* _POSIX_SOURCE */
+
+#ifndef _POSIX_SOURCE
+#define	ELAST		94		/* Must be equal largest errno */
 #endif /* _POSIX_SOURCE */
 
 #ifdef KERNEL
 /* pseudo-errors returned inside kernel to modify return to process */
-#define	ERESTART	-1		/* restart syscall */
-#define	EJUSTRETURN	-2		/* don't modify regs, just return */
+#define	ERESTART	(-1)		/* restart syscall */
+#define	EJUSTRETURN	(-2)		/* don't modify regs, just return */
+#define	ENOIOCTL	(-3)		/* ioctl not handled by this layer */
+#define	EDIRIOCTL	(-4)		/* do direct ioctl in GEOM */
 #endif
 
 #endif