initial code commit

src/resources.cpp

@@ -0,0 +1,78 @@
+/*
+   The MIT License (MIT)
+
+   Copyright (c) 2014 Antonio SJ Musumeci <trapexit@spawn.link>
+
+   Permission is hereby granted, free of charge, to any person obtaining a copy
+   of this software and associated documentation files (the "Software"), to deal
+   in the Software without restriction, including without limitation the rights
+   to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+   copies of the Software, and to permit persons to whom the Software is
+   furnished to do so, subject to the following conditions:
+
+   The above copyright notice and this permission notice shall be included in
+   all copies or substantial portions of the Software.
+
+   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+   IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+   FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+   AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+   LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+   OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+   THE SOFTWARE.
+*/
+
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/time.h>
+#include <sys/resource.h>
+
+namespace mergerfs
+{
+  namespace resources
+  {
+    int
+    reset_umask(void)
+    {
+      umask(0);
+      return 0;
+    }
+
+    int
+    maxout_rlimit(int resource)
+    {
+      struct rlimit rlim;
+
+      if(geteuid() == 0)
+        {
+          rlim.rlim_cur = RLIM_INFINITY;
+          rlim.rlim_max = RLIM_INFINITY;
+        }
+      else
+        {
+          int rv;
+
+          rv = ::getrlimit(resource,&rlim);
+          if(rv == -1)
+            return -1;
+
+          rlim.rlim_cur = rlim.rlim_max;
+        }
+
+      return ::setrlimit(resource,&rlim);
+    }
+
+    int
+    maxout_rlimit_nofile(void)
+    {
+      return maxout_rlimit(RLIMIT_NOFILE);
+    }
+
+    int
+    maxout_rlimit_fsize(void)
+    {
+      return maxout_rlimit(RLIMIT_FSIZE);
+    }
+  }
+}