On linux platforms, grok /proc/cpuinfo for the CPU/vendor info.

Prob not suitable for upstream seeing as how it's 100% linux-specific

Patch originally by Carlos E. Gorges <carlos@techlinux.com.br>, but 
heavily reworked to suck less.

--- coreutils/src/uname.c
+++ coreutils/src/uname.c
@@ -44,6 +44,11 @@
 # include <mach-o/arch.h>
 #endif
 
+#if defined (__linux__)
+# define USE_PROCINFO
+# define UNAME_HARDWARE_PLATFORM
+#endif
+
 #include "system.h"
 #include "error.h"
 #include "quote.h"
@@ -129,6 +134,84 @@
   exit (status);
 }
 
+#if defined(USE_PROCINFO)
+
+# if defined(__s390__) || defined(__s390x__)
+#  define CPUINFO_FILE    "/proc/sysinfo"
+#  define CPUINFO_FORMAT  "%[^\t :]%*[ :]%[^\n]\n"
+# else
+#  define CPUINFO_FILE    "/proc/cpuinfo"
+#  define CPUINFO_FORMAT  "%[^\t:]\t:%[^\n]\n"
+# endif
+
+# define PROCINFO_ARCHITECTURE      0
+# define PROCINFO_HARDWARE_PLATFORM 1
+
+static void __eat_trailing_space(char *buf)
+{
+	char *tmp = buf + strlen(buf) - 1;
+	while (tmp > buf && isspace(*tmp))
+		*tmp-- = '\0';
+}
+
+static int __linux_procinfo (int x, char *fstr)
+{
+	FILE *fp;
+
+	char *procinfo_keys[] = {
+		#if defined(__i386__) || defined(__x86_64__)
+			"model name", "vendor_id"
+		#elif defined(__ia64__)
+			"model", "vendor"
+		#elif defined(__alpha__)
+			"cpu model", "system type"
+		#elif defined(sparc) || defined(__sparc__)
+			"type", "cpu"
+		#elif defined(__hppa__)
+			"cpu", "model"
+		#elif defined(__mips__)
+			"cpu model", "system type"
+		#elif defined(__powerpc__) || defined(__powerpc64__)
+			"cpu", "machine"
+		#elif defined(__arm__)
+			"Processor", "Hardware"
+		#elif defined(__s390__) || defined(__s390x__)
+			"Type", "Manufacturer"
+		#elif defined(__sh__)
+			"cpu family", "Machine"
+		#elif defined(__m68k__)
+			"CPU", "MMU"
+		#elif defined(__cris__)
+			"cpu", "cpu model"
+		#else
+			"???", "???"
+		#endif
+	};
+
+	if ((fp = fopen(CPUINFO_FILE, "r")) != NULL) {
+		char key[64], value[257], *ret = NULL;
+
+		while (fscanf(fp, CPUINFO_FORMAT, key, value) != EOF) {
+			__eat_trailing_space(key);
+			if (!strcmp(key, procinfo_keys[x])) {
+				__eat_trailing_space(value);
+				ret = value + (isblank(*value) ? 1 : 0);
+				break;
+			}
+		}
+		fclose(fp);
+
+		if (ret) {
+			strncpy(fstr, ret, 257);
+			return 0;
+		}
+	}
+
+	return -1;
+}
+
+#endif
+
 /* Print ELEMENT, preceded by a space if something has already been
    printed.  */
 
@@ -243,10 +328,14 @@
   if (toprint & PRINT_PROCESSOR)
     {
       char const *element = unknown;
-#if HAVE_SYSINFO && defined SI_ARCHITECTURE
+#if ( HAVE_SYSINFO && defined SI_ARCHITECTURE ) || defined(USE_PROCINFO)
       {
 	static char processor[257];
+#if defined(USE_PROCINFO)
+	if (0 <= __linux_procinfo (PROCINFO_ARCHITECTURE, processor))
+#else
 	if (0 <= sysinfo (SI_ARCHITECTURE, processor, sizeof processor))
+#endif
 	  element = processor;
       }
 #endif
@@ -278,9 +369,13 @@
       if (element == unknown)
 	{
 	  static char hardware_platform[257];
+#if defined(USE_PROCINFO)
+	  if (0 <= __linux_procinfo (PROCINFO_HARDWARE_PLATFORM, hardware_platform))
+#else
 	  size_t s = sizeof hardware_platform;
 	  static int mib[] = { CTL_HW, UNAME_HARDWARE_PLATFORM };
 	  if (sysctl (mib, 2, hardware_platform, &s, 0, 0) >= 0)
+#endif
 	    element = hardware_platform;
 	}
 #endif