# HG changeset patch
# User Richard Lowe <richlowe@richlowe.net>
# Date 1308788604 25200
# Node ID 8bbc95af7713ee2cb681ad092130d824e0408733
# Parent  d4e1700ca0911eac75adab98d166cc9c6ff4db89
2062 libbc uname() deals with nodename/nodeext distastefully
Reviewed by: Joshua M. Clulow <josh@sysmgr.org>
Reviewed by: Alexander Eremin <alexander.eremin@nexenta.com>
Reviewed by: Robert Mustacchi <rm@joyent.com>
Approved by: Gordon Ross <gwr@nexenta.com>

diff -r d4e1700ca091 -r 8bbc95af7713 usr/src/lib/libbc/libc/sys/common/uname.c
--- a/usr/src/lib/libbc/libc/sys/common/uname.c	Fri Feb 03 20:27:13 2012 +0100
+++ b/usr/src/lib/libbc/libc/sys/common/uname.c	Wed Jun 22 17:23:24 2011 -0700
@@ -24,23 +24,21 @@
  * Use is subject to license terms.
  */
 
-#pragma ident	"%Z%%M%	%I%	%E% SMI" 
-
 #include	<errno.h>
 #include	<string.h>
 #include	<sys/utsname.h>
 #include	<sys/syscall.h>
 
-/* 
+/*
  * utsname structure has a different format in SVr4/SunOS 5.0.
  * The data needs to be mapped before returning to the user.
  */
 
-/* 
+/*
  * The following values and structure are from the SVR4 utsname.h.
  */
 #define		NEW_SYS_NMLN	257
-#define 	SYS_NMLN	9
+#define		SYS_NMLN	9
 #define		SYS_NDLN	65
 
 struct n_utsname {
@@ -51,14 +49,14 @@
 	char machine[NEW_SYS_NMLN];
 };
 
-int uname( uts )
-register struct utsname *uts;		/* where to put results */
+int
+uname(struct utsname *uts)
 {
-	return(bc_uname(uts));
+	return (bc_uname(uts));
 }
 
-int bc_uname( uts )
-struct utsname *uts;
+int
+bc_uname(struct utsname *uts)
 {
 	struct n_utsname n_uts;
 	int    ret;
@@ -67,9 +65,18 @@
 		memcpy(uts->sysname, n_uts.sysname, SYS_NMLN);
 		if (strlen(n_uts.sysname) > SYS_NMLN)
 			uts->sysname[SYS_NMLN-1] = '\0';
-		memcpy(uts->nodename, n_uts.nodename, SYS_NDLN);
+
+		/*
+		 * The nodename was originally 9 bytes (including NUL), but a
+		 * field was added, following it, extending it to SYS_NDLN.
+		 * So we have to copy it in two passes
+		 */
+		memcpy(uts->nodename, n_uts.nodename, SYS_NMLN);
+		memcpy(uts->nodeext, n_uts.nodename + SYS_NMLN,
+		    SYS_NDLN - SYS_NMLN);
 		if (strlen(n_uts.nodename) > SYS_NDLN)
-			uts->nodename[SYS_NDLN-1] = '\0';
+			uts->nodeext[sizeof (uts->nodeext) - 1] = '\0';
+
 		memcpy(uts->release, n_uts.release, SYS_NMLN);
 		if (strlen(n_uts.release) > SYS_NMLN)
 			uts->release[SYS_NMLN-1] = '\0';
@@ -81,5 +88,5 @@
 			uts->machine[SYS_NMLN-1] = '\0';
 	}
 
-	return(ret);
+	return (ret);
 }