(initialize): Use setrlimit to increase the limit on number of open

	file descriptors, if the config file says to do so.
	Moved code to calculate number of open connections here from main().
(main): Some code moved to initialize().

src/server/ramkomd.c

 /*
- * $Id: ramkomd.c,v 0.51 1994/06/29 23:30:59 ceder Exp $
+ * $Id: ramkomd.c,v 0.52 1994/10/24 00:34:39 ceder Exp $
  * Copyright (C) 1991, 1992, 1993, 1994  Lysator Academic Computer Association.
  *
  * This file is part of the LysKOM server.
@@ -31,7 +31,7 @@
  * It has grown! /ceder
  */
 
-static char *rcsid = "$Id: ramkomd.c,v 0.51 1994/06/29 23:30:59 ceder Exp $";
+static char *rcsid = "$Id: ramkomd.c,v 0.52 1994/10/24 00:34:39 ceder Exp $";
 #include "rcs.h"
 USE(rcsid);
 
@@ -51,6 +51,9 @@ USE(rcsid);
 #endif
 #include <sys/wait.h>
 #include <time.h>
+#ifdef HAVE_SYS_RESOURCE_H
+#  include <sys/resource.h>
+#endif
 #include <unistd.h>
 #include <setjmp.h>
 #if defined(HAVE_SYS_PARAM_H) && !defined(HAVE_GETCWD)
@@ -84,6 +87,10 @@ USE(rcsid);
 #include "server-config.h"
 #include "manipulate.h"
 
+#if defined(HAVE_SETRLIMIT) && defined(RLIMIT_OFILE) && !defined(RLIMIT_NOFILE)
+#  define RLIMIT_NOFILE RLIMIT_OFILE
+#endif
+
 struct kom_par param;
  
 Kom_err		  kom_errno = KOM_NO_ERROR;
@@ -292,6 +299,10 @@ go_daemon(const char *prefix, const char *logf)
 void
 initialize(const char *config_file)
 {
+#if defined(HAVE_SETRLIMIT) && defined(RLIMIT_NOFILE)
+    struct rlimit rlim;
+#endif
+
     read_configuration(config_file);
 
 #ifdef HAVE_LOCALE_H
@@ -309,6 +320,52 @@ initialize(const char *config_file)
 	exit(1);
     }
 #endif
+
+#if defined(HAVE_SETRLIMIT) && defined(RLIMIT_NOFILE)
+    if (param.no_file != -1)
+    {
+	if (getrlimit(RLIMIT_NOFILE, &rlim) < 0)
+	{
+	    perror("getrlimit(RLIMIT_NOFILE) failed");
+	    exit(1);
+	}
+	if (param.no_files > rlim.rlim_max)
+	{
+	    fprintf(stderr, "attempt to raise open files from %d to %d, "
+		    "but only %d is allowed\n", rlim.rlim_cur, param.no_files,
+		    rlim.rlim_max);
+	    rlim.rlim_cur = rlim.rlim_max;
+	}
+	else
+	    rlim.rlim_cur = param.no_files;
+	
+	if (setrlimit(RLIMIT_NOFILE, &rlim) < 0)
+	{
+	    perror("setrlimit failed");
+	    exit(1);
+	}
+    }
+#else
+    if (param.no_files != -1)
+    {
+	fprintf(stderr,
+		"can't alter number of open files in your environment.\n");
+	exit(1);
+    }
+#endif
+
+    /* Find out how many connections we can handle. */
+#if defined (HAVE_SYSCONF)
+    MAX_NO_OF_CONNECTIONS = sysconf(_SC_OPEN_MAX) - PROTECTED_FDS;
+#else
+# ifdef HAVE_GETDTABLESIZE
+    MAX_NO_OF_CONNECTIONS = getdtablesize() - PROTECTED_FDS;
+# else
+    /* If we don't have getdtablesize or sysconf, MAX_NO_OF_CONNECTIONS is
+       set at compile time. */
+# endif
+#endif
+
     go_daemon(param.dbase_dir, param.logfile_name);
     server_init(param.ip_client_port, param.ip_mux_port);
     init_data_base(param.dbase_dir);
@@ -330,20 +387,6 @@ main (int    argc,
 #include "version.incl"
 	, getpid());
 
-    /* Find out how many connections we can handle. */
-
-#if defined (HAVE_SYSCONF)
-    MAX_NO_OF_CONNECTIONS = sysconf(_SC_OPEN_MAX) - PROTECTED_FDS;
-#else
-# ifdef HAVE_GETDTABLESIZE
-    MAX_NO_OF_CONNECTIONS = getdtablesize() - PROTECTED_FDS;
-# else
-    /* If we don't have getdtablesize or sysconf, MAX_NO_OF_CONNECTIONS is
-       set at compile time. */
-# endif
-#endif
-
-
 #ifdef ENCRYPT_PASSWORDS
     /* Seed the random number generator. */
     srand(time(NULL) + getpid());