Add libbroken.

git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@417 ec53bebd-3082-4978-b11e-865c3cabbd6b

lib/roken/getdtablesize.c

@@ -0,0 +1,50 @@
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <sys/types.h>
+#include <sys/time.h>
+#include <sys/param.h>
+#include <unistd.h>
+
+#ifdef HAVE_SYS_RESOURCE_H
+#include <sys/resource.h>
+#endif
+
+#ifdef HAVE_SYS_SYSCTL_H
+#include <sys/sysctl.h>
+#endif
+
+int getdtablesize(void)
+{
+    int files = -1;
+#if defined(HAVE_SYSCONF) && defined(_SC_OPEN_MAX)
+    files = sysconf(_SC_OPEN_MAX);
+
+#elif definded(HAVE_GETRLIMIT) && defined(RLIMIT_NOFILE)
+    struct rlimit res;
+    if(getrlimit(RLIMIT_NOFILE, &res) == 0)
+	files = res.rlim_cur;
+
+#elif defined(HAVE_SYSCTL) && defined(CTL_KERN) && defined(KERN_MAXFILES)
+    int mib[2];
+    size_t len;
+    
+    mib[0] = CTL_KERN;
+    mib[1] = KERN_MAXFILES;
+    len = sizeof(files);
+    sysctl(&mib, 2, &files, sizeof(nfil), NULL, 0);
+#endif
+
+#ifdef OPEN_MAX
+    if(files < 0)
+	files = OPEN_MAX;
+#endif
+
+#ifdef NOFILE
+    if(files < 0)
+	files = NOFILE;
+#endif    
+    
+    return files;
+}