2005-01-11  Thorsten Kukuk  <kukuk@suse.de>

        * posix/getconf.c: Add new option -a to print the names of

        the current system configuration variables to stdout.

        Based on patch from Josh Aas <josha@sgi.com>.

--- posix/getconf.c

+++ posix/getconf.c	2005/01/11 09:07:54

@@ -941,9 +941,54 @@

   fprintf (stderr,

 	   _("Usage: %s [-v specification] variable_name [pathname]\n"),

 	   __progname);

+  fprintf (stderr,

+	   _("       %s -a [pathname]\n"), __progname);

   exit (2);

 }

+static void

+print_all (const char *path)

+{

+  register const struct conf *c;

+  size_t clen;

+  long int value;

+  char *cvalue;

+  for (c = vars; c->name != NULL; ++c) {

+    printf("%-35s", c->name);

+    switch (c->call) {

+      case PATHCONF:

+        value = pathconf (path, c->call_name);

+        if (value != -1) {

+          printf("%ld", value);

+        }

+        printf("\n");

+        break;

+      case SYSCONF:

+        value = sysconf (c->call_name);

+        if (value == -1l) {

+          if (c->call_name == _SC_UINT_MAX

+            || c->call_name == _SC_ULONG_MAX)

+            printf ("%lu", value);

+        }

+        else {

+          printf ("%ld", value);

+        }

+        printf ("\n");

+        break;

+      case CONFSTR:

+        clen = confstr (c->call_name, (char *) NULL, 0);

+        cvalue = (char *) malloc (clen);

+        if (cvalue == NULL)

+          error (3, 0, _("memory exhausted"));

+        if (confstr (c->call_name, cvalue, clen) != clen)

+          error (3, errno, "confstr");

+        printf ("%.*s\n", (int) clen, cvalue);

+        break;

+    }

+  }

+  exit (0);

+}

+

 int

 main (int argc, char *argv[])

 {

@@ -1050,6 +1094,16 @@

 	}

     }

+  if (argc > 1 && strcmp (argv[1], "-a") == 0)

+    {

+      if (argc == 2)

+	print_all ("/");

+      else if (argc == 3)

+	print_all (argv[2]);

+      else

+	usage ();

+    }

+

   if (argc < 2 || argc > 3)

     usage ();