added some Makefile things and command line parsing

7 files changed, 1240 insertions, 0 deletions

diff --git a/AUTHORS b/AUTHORS
new file mode 100644
index 0000000..c0a8471
--- /dev/null
+++ b/AUTHORS
@@ -0,0 +1,2 @@
+Authors of pgfuse:
+  Andreas Baumann <abaumann@yahoo.com>
diff --git a/INSTALL b/INSTALL
new file mode 100644
index 0000000..450c9f8
--- /dev/null
+++ b/INSTALL
@@ -0,0 +1,17 @@
+Prerequisites
+-------------
+
+required:
+
+* libpq from Postgresql and header files
+
+optionally:
+
+* gengetopt 2.22.x: a commmand line argument generator,
+  generates pgfuse_cmdline.h and pgfuse_cmdline.c
+  (just needed, if you change pgfuse.ggo)
+  
+Compilation
+-----------
+
+make should do the trick. :-)
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..5f2af39
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,22 @@
+all: pgfuse
+
+CFLAGS = -Wall -g `pkg-config fuse --cflags`
+LDFLAGS = `pkg-config fuse --libs`
+
+clean:
+	rm -f pgfuse pgfuse.o
+
+pgfuse: pgfuse.o pgfuse_cmdline.o
+	gcc -o pgfuse $(LDFLAGS) pgfuse.o pgfuse_cmdline.o
+
+pgfuse_cmdline.o: pgfuse_cmdline.c pgfuse_cmdline.h
+	gcc -c $(CFLAGS) -o pgfuse_cmdline.o pgfuse_cmdline.c
+
+pgfuse.o: pgfuse.c pgfuse_cmdline.h
+	gcc -c $(CFLAGS) -o pgfuse.o pgfuse.c
+
+pgfuse_cmdline.h: pgfuse.ggo
+	gengetopt -F pgfuse_cmdline --conf-parser -i pgfuse.ggo
+
+pgfuse_cmdline.c: pgfuse.ggo
+	gengetopt -F pgfuse_cmdline --conf-parser -i pgfuse.ggo 
diff --git a/pgfuse.c b/pgfuse.c
new file mode 100644
index 0000000..00bfea6
--- /dev/null
+++ b/pgfuse.c
@@ -0,0 +1,88 @@
+/*
+    Copyright (C) 2012 Andreas Baumann <abaumann@yahoo.com>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include <unistd.h>		/* for exit */
+#include <stdlib.h>		/* for EXIT_FAILURE, EXIT_SUCCESS */
+#include <stdio.h>		/* for fprintf */
+
+#include "pgfuse_cmdline.h"	/* for command line and option parsing (gengetopt) */
+
+static int parse_options_and_arguments( int argc, char *argv[], struct gengetopt_args_info *args_info ) {
+	struct cmdline_parser_params params;
+
+	cmdline_parser_params_init( &params );
+	params.override = 1;
+	params.initialize = 0;
+	params.check_required = 1;
+
+        cmdline_parser_init( args_info );
+
+        if( cmdline_parser_ext( argc, argv, args_info, &params ) != 0 ) {
+        	cmdline_parser_free( args_info );
+        	return EXIT_FAILURE;
+        }
+
+        return EXIT_SUCCESS;
+}
+
+static int test_config( const char *filename ) {
+	return EXIT_SUCCESS;
+}
+
+static int read_config( const char *filename, struct gengetopt_args_info *args_info ) {
+	char *config_filename = strdup( filename );
+	struct cmdline_parser_params params;
+
+	cmdline_parser_params_init( &params );
+	params.override = 0;
+	params.initialize = 0;
+	params.check_required = 1;
+
+	if( cmdline_parser_config_file( config_filename, args_info, &params ) != 0 ) {
+		fprintf( stdout, "\n%s\n", gengetopt_args_info_usage );
+		cmdline_parser_free( args_info );
+		free( config_filename );
+		return EXIT_FAILURE;
+	}
+	free( config_filename );
+	
+	return EXIT_SUCCESS;
+}
+
+int main( int argc, char *argv[] )
+{
+	struct gengetopt_args_info args_info;
+	
+	if( parse_options_and_arguments( argc, argv, &args_info ) == EXIT_FAILURE ) {
+		exit( EXIT_FAILURE );
+	}
+
+	if( args_info.config_file_given ) {
+		if( read_config(  args_info.config_file_arg, &args_info ) == EXIT_FAILURE ) {
+			exit( EXIT_FAILURE );
+		}
+	}
+	
+	if( args_info.test_given ) {
+		cmdline_parser_free( &args_info );
+		exit( test_config( args_info.config_file_arg ) );
+	}
+	
+	cmdline_parser_free( &args_info );
+	
+	exit( EXIT_SUCCESS );
+}
diff --git a/pgfuse.ggo b/pgfuse.ggo
new file mode 100644
index 0000000..722de1e
--- /dev/null
+++ b/pgfuse.ggo
@@ -0,0 +1,23 @@
+package "pgfuse"
+version "0.0.1"
+usage "pgfuse [options] <mount point>"
+description "User land filesystem using a Postgresql database\n"
+
+section "Main Options"
+	option "ro" r
+		"Do not allow write operations, only read operations"
+		optional
+		
+	option "debug" d
+		"Increase debug level (option can be given many times)"
+		optional multiple
+		
+	option "test" t
+		"Test the configuration without running pgfuse"
+		optional
+
+	option "config-file" c
+		"An optional configuration file to be read by pgfuse"
+                string typestr="file"
+                optional
+
diff --git a/pgfuse_cmdline.c b/pgfuse_cmdline.c
new file mode 100644
index 0000000..324b986
--- /dev/null
+++ b/pgfuse_cmdline.c
@@ -0,0 +1,880 @@
+/*
+  File autogenerated by gengetopt version 2.22.5
+  generated with the following command:
+  gengetopt -F pgfuse_cmdline --conf-parser -i pgfuse.ggo 
+
+  The developers of gengetopt consider the fixed text that goes in all
+  gengetopt output files to be in the public domain:
+  we make no copyright claims on it.
+*/
+
+/* If we use autoconf.  */
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#ifndef FIX_UNUSED
+#define FIX_UNUSED(X) (void) (X) /* avoid warnings for unused params */
+#endif
+
+#include <getopt.h>
+
+#include "pgfuse_cmdline.h"
+
+const char *gengetopt_args_info_purpose = "";
+
+const char *gengetopt_args_info_usage = "Usage: pgfuse [options] <mount point>";
+
+const char *gengetopt_args_info_description = "User land filesystem using a Postgresql database\n";
+
+const char *gengetopt_args_info_help[] = {
+  "  -h, --help              Print help and exit",
+  "  -V, --version           Print version and exit",
+  "\nMain Options:",
+  "  -r, --ro                Do not allow write operations, only read operations",
+  "  -d, --debug             Increase debug level (option can be given many times)",
+  "  -t, --test              Test the configuration without running pgfuse",
+  "  -c, --config-file=file  An optional configuration file to be read by pgfuse",
+    0
+};
+
+typedef enum {ARG_NO
+  , ARG_STRING
+} cmdline_parser_arg_type;
+
+static
+void clear_given (struct gengetopt_args_info *args_info);
+static
+void clear_args (struct gengetopt_args_info *args_info);
+
+static int
+cmdline_parser_internal (int argc, char **argv, struct gengetopt_args_info *args_info,
+                        struct cmdline_parser_params *params, const char *additional_error);
+
+static int
+cmdline_parser_required2 (struct gengetopt_args_info *args_info, const char *prog_name, const char *additional_error);
+struct line_list
+{
+  char * string_arg;
+  struct line_list * next;
+};
+
+static struct line_list *cmd_line_list = 0;
+static struct line_list *cmd_line_list_tmp = 0;
+
+static void
+free_cmd_list(void)
+{
+  /* free the list of a previous call */
+  if (cmd_line_list)
+    {
+      while (cmd_line_list) {
+        cmd_line_list_tmp = cmd_line_list;
+        cmd_line_list = cmd_line_list->next;
+        free (cmd_line_list_tmp->string_arg);
+        free (cmd_line_list_tmp);
+      }
+    }
+}
+
+
+static char *
+gengetopt_strdup (const char *s);
+
+static
+void clear_given (struct gengetopt_args_info *args_info)
+{
+  args_info->help_given = 0 ;
+  args_info->version_given = 0 ;
+  args_info->ro_given = 0 ;
+  args_info->debug_given = 0 ;
+  args_info->test_given = 0 ;
+  args_info->config_file_given = 0 ;
+}
+
+static
+void clear_args (struct gengetopt_args_info *args_info)
+{
+  FIX_UNUSED (args_info);
+  args_info->config_file_arg = NULL;
+  args_info->config_file_orig = NULL;
+  
+}
+
+static
+void init_args_info(struct gengetopt_args_info *args_info)
+{
+
+
+  args_info->help_help = gengetopt_args_info_help[0] ;
+  args_info->version_help = gengetopt_args_info_help[1] ;
+  args_info->ro_help = gengetopt_args_info_help[3] ;
+  args_info->debug_help = gengetopt_args_info_help[4] ;
+  args_info->debug_min = 0;
+  args_info->debug_max = 0;
+  args_info->test_help = gengetopt_args_info_help[5] ;
+  args_info->config_file_help = gengetopt_args_info_help[6] ;
+  
+}
+
+void
+cmdline_parser_print_version (void)
+{
+  printf ("%s %s\n",
+     (strlen(CMDLINE_PARSER_PACKAGE_NAME) ? CMDLINE_PARSER_PACKAGE_NAME : CMDLINE_PARSER_PACKAGE),
+     CMDLINE_PARSER_VERSION);
+}
+
+static void print_help_common(void) {
+  cmdline_parser_print_version ();
+
+  if (strlen(gengetopt_args_info_purpose) > 0)
+    printf("\n%s\n", gengetopt_args_info_purpose);
+
+  if (strlen(gengetopt_args_info_usage) > 0)
+    printf("\n%s\n", gengetopt_args_info_usage);
+
+  printf("\n");
+
+  if (strlen(gengetopt_args_info_description) > 0)
+    printf("%s\n\n", gengetopt_args_info_description);
+}
+
+void
+cmdline_parser_print_help (void)
+{
+  int i = 0;
+  print_help_common();
+  while (gengetopt_args_info_help[i])
+    printf("%s\n", gengetopt_args_info_help[i++]);
+}
+
+void
+cmdline_parser_init (struct gengetopt_args_info *args_info)
+{
+  clear_given (args_info);
+  clear_args (args_info);
+  init_args_info (args_info);
+}
+
+void
+cmdline_parser_params_init(struct cmdline_parser_params *params)
+{
+  if (params)
+    { 
+      params->override = 0;
+      params->initialize = 1;
+      params->check_required = 1;
+      params->check_ambiguity = 0;
+      params->print_errors = 1;
+    }
+}
+
+struct cmdline_parser_params *
+cmdline_parser_params_create(void)
+{
+  struct cmdline_parser_params *params = 
+    (struct cmdline_parser_params *)malloc(sizeof(struct cmdline_parser_params));
+  cmdline_parser_params_init(params);  
+  return params;
+}
+
+static void
+free_string_field (char **s)
+{
+  if (*s)
+    {
+      free (*s);
+      *s = 0;
+    }
+}
+
+
+static void
+cmdline_parser_release (struct gengetopt_args_info *args_info)
+{
+
+  free_string_field (&(args_info->config_file_arg));
+  free_string_field (&(args_info->config_file_orig));
+  
+  
+
+  clear_given (args_info);
+}
+
+
+static void
+write_into_file(FILE *outfile, const char *opt, const char *arg, const char *values[])
+{
+  FIX_UNUSED (values);
+  if (arg) {
+    fprintf(outfile, "%s=\"%s\"\n", opt, arg);
+  } else {
+    fprintf(outfile, "%s\n", opt);
+  }
+}
+
+static void
+write_multiple_into_file(FILE *outfile, int len, const char *opt, char **arg, const char *values[])
+{
+  int i;
+  
+  for (i = 0; i < len; ++i)
+    write_into_file(outfile, opt, (arg ? arg[i] : 0), values);
+}
+
+int
+cmdline_parser_dump(FILE *outfile, struct gengetopt_args_info *args_info)
+{
+  int i = 0;
+
+  if (!outfile)
+    {
+      fprintf (stderr, "%s: cannot dump options to stream\n", CMDLINE_PARSER_PACKAGE);
+      return EXIT_FAILURE;
+    }
+
+  if (args_info->help_given)
+    write_into_file(outfile, "help", 0, 0 );
+  if (args_info->version_given)
+    write_into_file(outfile, "version", 0, 0 );
+  if (args_info->ro_given)
+    write_into_file(outfile, "ro", 0, 0 );
+  write_multiple_into_file(outfile, args_info->debug_given, "debug", 0, 0);
+  if (args_info->test_given)
+    write_into_file(outfile, "test", 0, 0 );
+  if (args_info->config_file_given)
+    write_into_file(outfile, "config-file", args_info->config_file_orig, 0);
+  
+
+  i = EXIT_SUCCESS;
+  return i;
+}
+
+int
+cmdline_parser_file_save(const char *filename, struct gengetopt_args_info *args_info)
+{
+  FILE *outfile;
+  int i = 0;
+
+  outfile = fopen(filename, "w");
+
+  if (!outfile)
+    {
+      fprintf (stderr, "%s: cannot open file for writing: %s\n", CMDLINE_PARSER_PACKAGE, filename);
+      return EXIT_FAILURE;
+    }
+
+  i = cmdline_parser_dump(outfile, args_info);
+  fclose (outfile);
+
+  return i;
+}
+
+void
+cmdline_parser_free (struct gengetopt_args_info *args_info)
+{
+  cmdline_parser_release (args_info);
+}
+
+/** @brief replacement of strdup, which is not standard */
+char *
+gengetopt_strdup (const char *s)
+{
+  char *result = 0;
+  if (!s)
+    return result;
+
+  result = (char*)malloc(strlen(s) + 1);
+  if (result == (char*)0)
+    return (char*)0;
+  strcpy(result, s);
+  return result;
+}
+
+static int
+check_multiple_option_occurrences(const char *prog_name, unsigned int option_given, unsigned int min, unsigned int max, const char *option_desc);
+
+int
+check_multiple_option_occurrences(const char *prog_name, unsigned int option_given, unsigned int min, unsigned int max, const char *option_desc)
+{
+  int error = 0;
+
+  if (option_given && (min > 0 || max > 0))
+    {
+      if (min > 0 && max > 0)
+        {
+          if (min == max)
+            {
+              /* specific occurrences */
+              if (option_given != (unsigned int) min)
+                {
+                  fprintf (stderr, "%s: %s option occurrences must be %d\n",
+                    prog_name, option_desc, min);
+                  error = 1;
+                }
+            }
+          else if (option_given < (unsigned int) min
+                || option_given > (unsigned int) max)
+            {
+              /* range occurrences */
+              fprintf (stderr, "%s: %s option occurrences must be between %d and %d\n",
+                prog_name, option_desc, min, max);
+              error = 1;
+            }
+        }
+      else if (min > 0)
+        {
+          /* at least check */
+          if (option_given < min)
+            {
+              fprintf (stderr, "%s: %s option occurrences must be at least %d\n",
+                prog_name, option_desc, min);
+              error = 1;
+            }
+        }
+      else if (max > 0)
+        {
+          /* at most check */
+          if (option_given > max)
+            {
+              fprintf (stderr, "%s: %s option occurrences must be at most %d\n",
+                prog_name, option_desc, max);
+              error = 1;
+            }
+        }
+    }
+    
+  return error;
+}
+int
+cmdline_parser (int argc, char **argv, struct gengetopt_args_info *args_info)
+{
+  return cmdline_parser2 (argc, argv, args_info, 0, 1, 1);
+}
+
+int
+cmdline_parser_ext (int argc, char **argv, struct gengetopt_args_info *args_info,
+                   struct cmdline_parser_params *params)
+{
+  int result;
+  result = cmdline_parser_internal (argc, argv, args_info, params, 0);
+
+  if (result == EXIT_FAILURE)
+    {
+      cmdline_parser_free (args_info);
+      exit (EXIT_FAILURE);
+    }
+  
+  return result;
+}
+
+int
+cmdline_parser2 (int argc, char **argv, struct gengetopt_args_info *args_info, int override, int initialize, int check_required)
+{
+  int result;
+  struct cmdline_parser_params params;
+  
+  params.override = override;
+  params.initialize = initialize;
+  params.check_required = check_required;
+  params.check_ambiguity = 0;
+  params.print_errors = 1;
+
+  result = cmdline_parser_internal (argc, argv, args_info, &params, 0);
+
+  if (result == EXIT_FAILURE)
+    {
+      cmdline_parser_free (args_info);
+      exit (EXIT_FAILURE);
+    }
+  
+  return result;
+}
+
+int
+cmdline_parser_required (struct gengetopt_args_info *args_info, const char *prog_name)
+{
+  int result = EXIT_SUCCESS;
+
+  if (cmdline_parser_required2(args_info, prog_name, 0) > 0)
+    result = EXIT_FAILURE;
+
+  if (result == EXIT_FAILURE)
+    {
+      cmdline_parser_free (args_info);
+      exit (EXIT_FAILURE);
+    }
+  
+  return result;
+}
+
+int
+cmdline_parser_required2 (struct gengetopt_args_info *args_info, const char *prog_name, const char *additional_error)
+{
+  int error = 0;
+  FIX_UNUSED (additional_error);
+
+  /* checks for required options */
+  if (check_multiple_option_occurrences(prog_name, args_info->debug_given, args_info->debug_min, args_info->debug_max, "'--debug' ('-d')"))
+     error = 1;
+  
+  
+  /* checks for dependences among options */
+
+  return error;
+}
+
+
+static char *package_name = 0;
+
+/**
+ * @brief updates an option
+ * @param field the generic pointer to the field to update
+ * @param orig_field the pointer to the orig field
+ * @param field_given the pointer to the number of occurrence of this option
+ * @param prev_given the pointer to the number of occurrence already seen
+ * @param value the argument for this option (if null no arg was specified)
+ * @param possible_values the possible values for this option (if specified)
+ * @param default_value the default value (in case the option only accepts fixed values)
+ * @param arg_type the type of this option
+ * @param check_ambiguity @see cmdline_parser_params.check_ambiguity
+ * @param override @see cmdline_parser_params.override
+ * @param no_free whether to free a possible previous value
+ * @param multiple_option whether this is a multiple option
+ * @param long_opt the corresponding long option
+ * @param short_opt the corresponding short option (or '-' if none)
+ * @param additional_error possible further error specification
+ */
+static
+int update_arg(void *field, char **orig_field,
+               unsigned int *field_given, unsigned int *prev_given, 
+               char *value, const char *possible_values[],
+               const char *default_value,
+               cmdline_parser_arg_type arg_type,
+               int check_ambiguity, int override,
+               int no_free, int multiple_option,
+               const char *long_opt, char short_opt,
+               const char *additional_error)
+{
+  char *stop_char = 0;
+  const char *val = value;
+  int found;
+  char **string_field;
+  FIX_UNUSED (field);
+
+  stop_char = 0;
+  found = 0;
+
+  if (!multiple_option && prev_given && (*prev_given || (check_ambiguity && *field_given)))
+    {
+      if (short_opt != '-')
+        fprintf (stderr, "%s: `--%s' (`-%c') option given more than once%s\n", 
+               package_name, long_opt, short_opt,
+               (additional_error ? additional_error : ""));
+      else
+        fprintf (stderr, "%s: `--%s' option given more than once%s\n", 
+               package_name, long_opt,
+               (additional_error ? additional_error : ""));
+      return 1; /* failure */
+    }
+
+  FIX_UNUSED (default_value);
+    
+  if (field_given && *field_given && ! override)
+    return 0;
+  if (prev_given)
+    (*prev_given)++;
+  if (field_given)
+    (*field_given)++;
+  if (possible_values)
+    val = possible_values[found];
+
+  switch(arg_type) {
+  case ARG_STRING:
+    if (val) {
+      string_field = (char **)field;
+      if (!no_free && *string_field)
+        free (*string_field); /* free previous string */
+      *string_field = gengetopt_strdup (val);
+    }
+    break;
+  default:
+    break;
+  };
+
+
+  /* store the original value */
+  switch(arg_type) {
+  case ARG_NO:
+    break;
+  default:
+    if (value && orig_field) {
+      if (no_free) {
+        *orig_field = value;
+      } else {
+        if (*orig_field)
+          free (*orig_field); /* free previous string */
+        *orig_field = gengetopt_strdup (value);
+      }
+    }
+  };
+
+  return 0; /* OK */
+}
+
+
+int
+cmdline_parser_internal (
+  int argc, char **argv, struct gengetopt_args_info *args_info,
+                        struct cmdline_parser_params *params, const char *additional_error)
+{
+  int c;	/* Character of the parsed option.  */
+
+  int error = 0;
+  struct gengetopt_args_info local_args_info;
+  
+  int override;
+  int initialize;
+  int check_required;
+  int check_ambiguity;
+  
+  package_name = argv[0];
+  
+  override = params->override;
+  initialize = params->initialize;
+  check_required = params->check_required;
+  check_ambiguity = params->check_ambiguity;
+
+  if (initialize)
+    cmdline_parser_init (args_info);
+
+  cmdline_parser_init (&local_args_info);
+
+  optarg = 0;
+  optind = 0;
+  opterr = params->print_errors;
+  optopt = '?';
+
+  while (1)
+    {
+      int option_index = 0;
+
+      static struct option long_options[] = {
+        { "help",	0, NULL, 'h' },
+        { "version",	0, NULL, 'V' },
+        { "ro",	0, NULL, 'r' },
+        { "debug",	0, NULL, 'd' },
+        { "test",	0, NULL, 't' },
+        { "config-file",	1, NULL, 'c' },
+        { 0,  0, 0, 0 }
+      };
+
+      c = getopt_long (argc, argv, "hVrdtc:", long_options, &option_index);
+
+      if (c == -1) break;	/* Exit from `while (1)' loop.  */
+
+      switch (c)
+        {
+        case 'h':	/* Print help and exit.  */
+          cmdline_parser_print_help ();
+          cmdline_parser_free (&local_args_info);
+          exit (EXIT_SUCCESS);
+
+        case 'V':	/* Print version and exit.  */
+          cmdline_parser_print_version ();
+          cmdline_parser_free (&local_args_info);
+          exit (EXIT_SUCCESS);
+
+        case 'r':	/* Do not allow write operations, only read operations.  */
+        
+        
+          if (update_arg( 0 , 
+               0 , &(args_info->ro_given),
+              &(local_args_info.ro_given), optarg, 0, 0, ARG_NO,
+              check_ambiguity, override, 0, 0,
+              "ro", 'r',
+              additional_error))
+            goto failure;
+        
+          break;
+        case 'd':	/* Increase debug level (option can be given many times).  */
+        
+          local_args_info.debug_given++;
+        
+          break;
+        case 't':	/* Test the configuration without running pgfuse.  */
+        
+        
+          if (update_arg( 0 , 
+               0 , &(args_info->test_given),
+              &(local_args_info.test_given), optarg, 0, 0, ARG_NO,
+              check_ambiguity, override, 0, 0,
+              "test", 't',
+              additional_error))
+            goto failure;
+        
+          break;
+        case 'c':	/* An optional configuration file to be read by pgfuse.  */
+        
+        
+          if (update_arg( (void *)&(args_info->config_file_arg), 
+               &(args_info->config_file_orig), &(args_info->config_file_given),
+              &(local_args_info.config_file_given), optarg, 0, 0, ARG_STRING,
+              check_ambiguity, override, 0, 0,
+              "config-file", 'c',
+              additional_error))
+            goto failure;
+        
+          break;
+
+        case 0:	/* Long option with no short option */
+        case '?':	/* Invalid option.  */
+          /* `getopt_long' already printed an error message.  */
+          goto failure;
+
+        default:	/* bug: option not considered.  */
+          fprintf (stderr, "%s: option unknown: %c%s\n", CMDLINE_PARSER_PACKAGE, c, (additional_error ? additional_error : ""));
+          abort ();
+        } /* switch */
+    } /* while */
+
+
+
+  args_info->debug_given += local_args_info.debug_given;
+  local_args_info.debug_given = 0;
+  
+  if (check_required)
+    {
+      error += cmdline_parser_required2 (args_info, argv[0], additional_error);
+    }
+
+  cmdline_parser_release (&local_args_info);
+
+  if ( error )
+    return (EXIT_FAILURE);
+
+  return 0;
+
+failure:
+  
+  cmdline_parser_release (&local_args_info);
+  return (EXIT_FAILURE);
+}
+
+#ifndef CONFIG_FILE_LINE_SIZE
+#define CONFIG_FILE_LINE_SIZE 2048
+#endif
+#define ADDITIONAL_ERROR " in configuration file "
+
+#define CONFIG_FILE_LINE_BUFFER_SIZE (CONFIG_FILE_LINE_SIZE+3)
+/* 3 is for "--" and "=" */
+
+static int
+_cmdline_parser_configfile (const char *filename, int *my_argc)
+{
+  FILE* file;
+  char my_argv[CONFIG_FILE_LINE_BUFFER_SIZE+1];
+  char linebuf[CONFIG_FILE_LINE_SIZE];
+  int line_num = 0;
+  int result = 0, equal;
+  char *fopt, *farg;
+  char *str_index;
+  size_t len, next_token;
+  char delimiter;
+
+  if ((file = fopen(filename, "r")) == 0)
+    {
+      fprintf (stderr, "%s: Error opening configuration file '%s'\n",
+               CMDLINE_PARSER_PACKAGE, filename);
+      return EXIT_FAILURE;
+    }
+
+  while ((fgets(linebuf, CONFIG_FILE_LINE_SIZE, file)) != 0)
+    {
+      ++line_num;
+      my_argv[0] = '\0';
+      len = strlen(linebuf);
+      if (len > (CONFIG_FILE_LINE_BUFFER_SIZE-1))
+        {
+          fprintf (stderr, "%s:%s:%d: Line too long in configuration file\n",
+                   CMDLINE_PARSER_PACKAGE, filename, line_num);
+          result = EXIT_FAILURE;
+          break;
+        }
+
+      /* find first non-whitespace character in the line */
+      next_token = strspn (linebuf, " \t\r\n");
+      str_index  = linebuf + next_token;
+
+      if ( str_index[0] == '\0' || str_index[0] == '#')
+        continue; /* empty line or comment line is skipped */
+
+      fopt = str_index;
+
+      /* truncate fopt at the end of the first non-valid character */
+      next_token = strcspn (fopt, " \t\r\n=");
+
+      if (fopt[next_token] == '\0') /* the line is over */
+        {
+          farg  = 0;
+          equal = 0;
+          goto noarg;
+        }
+
+      /* remember if equal sign is present */
+      equal = (fopt[next_token] == '=');
+      fopt[next_token++] = '\0';
+
+      /* advance pointers to the next token after the end of fopt */
+      next_token += strspn (fopt + next_token, " \t\r\n");
+
+      /* check for the presence of equal sign, and if so, skip it */
+      if ( !equal )
+        if ((equal = (fopt[next_token] == '=')))
+          {
+            next_token++;
+            next_token += strspn (fopt + next_token, " \t\r\n");
+          }
+      str_index  += next_token;
+
+      /* find argument */
+      farg = str_index;
+      if ( farg[0] == '\"' || farg[0] == '\'' )
+        { /* quoted argument */
+          str_index = strchr (++farg, str_index[0] ); /* skip opening quote */
+          if (! str_index)
+            {
+              fprintf
+                (stderr,
+                 "%s:%s:%d: unterminated string in configuration file\n",
+                 CMDLINE_PARSER_PACKAGE, filename, line_num);
+              result = EXIT_FAILURE;
+              break;
+            }
+        }
+      else
+        { /* read up the remaining part up to a delimiter */
+          next_token = strcspn (farg, " \t\r\n#\'\"");
+          str_index += next_token;
+        }
+
+      /* truncate farg at the delimiter and store it for further check */
+      delimiter = *str_index, *str_index++ = '\0';
+
+      /* everything but comment is illegal at the end of line */
+      if (delimiter != '\0' && delimiter != '#')
+        {
+          str_index += strspn(str_index, " \t\r\n");
+          if (*str_index != '\0' && *str_index != '#')
+            {
+              fprintf
+                (stderr,
+                 "%s:%s:%d: malformed string in configuration file\n",
+                 CMDLINE_PARSER_PACKAGE, filename, line_num);
+              result = EXIT_FAILURE;
+              break;
+            }
+        }
+
+    noarg:
+      if (!strcmp(fopt,"include")) {
+        if (farg && *farg) {
+          result = _cmdline_parser_configfile(farg, my_argc);
+        } else {
+          fprintf(stderr, "%s:%s:%d: include requires a filename argument.\n",
+                  CMDLINE_PARSER_PACKAGE, filename, line_num);
+        }
+        continue;
+      }
+      len = strlen(fopt);
+      strcat (my_argv, len > 1 ? "--" : "-");
+      strcat (my_argv, fopt);
+      if (len > 1 && ((farg && *farg) || equal))
+        strcat (my_argv, "=");
+      if (farg && *farg)
+        strcat (my_argv, farg);
+      ++(*my_argc);
+
+      cmd_line_list_tmp = (struct line_list *) malloc (sizeof (struct line_list));
+      cmd_line_list_tmp->next = cmd_line_list;
+      cmd_line_list = cmd_line_list_tmp;
+      cmd_line_list->string_arg = gengetopt_strdup(my_argv);
+    } /* while */
+
+  if (file)
+    fclose(file);
+  return result;
+}
+
+int
+cmdline_parser_configfile (
+  const char *filename,
+                           struct gengetopt_args_info *args_info,
+                           int override, int initialize, int check_required)
+{
+  struct cmdline_parser_params params;
+
+  params.override = override;
+  params.initialize = initialize;
+  params.check_required = check_required;
+  params.check_ambiguity = 0;
+  params.print_errors = 1;
+  
+  return cmdline_parser_config_file (filename, args_info, &params);
+}
+
+int
+cmdline_parser_config_file (const char *filename,
+                           struct gengetopt_args_info *args_info,
+                           struct cmdline_parser_params *params)
+{
+  int i, result;
+  int my_argc = 1;
+  char **my_argv_arg;
+  char *additional_error;
+
+  /* store the program name */
+  cmd_line_list_tmp = (struct line_list *) malloc (sizeof (struct line_list));
+  cmd_line_list_tmp->next = cmd_line_list;
+  cmd_line_list = cmd_line_list_tmp;
+  cmd_line_list->string_arg = gengetopt_strdup (CMDLINE_PARSER_PACKAGE);
+
+  result = _cmdline_parser_configfile(filename, &my_argc);
+
+  if (result != EXIT_FAILURE) {
+    my_argv_arg = (char **) malloc((my_argc+1) * sizeof(char *));
+    cmd_line_list_tmp = cmd_line_list;
+
+    for (i = my_argc - 1; i >= 0; --i) {
+      my_argv_arg[i] = cmd_line_list_tmp->string_arg;
+      cmd_line_list_tmp = cmd_line_list_tmp->next;
+    }
+
+    my_argv_arg[my_argc] = 0;
+
+    additional_error = (char *)malloc(strlen(filename) + strlen(ADDITIONAL_ERROR) + 1);
+    strcpy (additional_error, ADDITIONAL_ERROR);
+    strcat (additional_error, filename);
+    result =
+      cmdline_parser_internal (my_argc, my_argv_arg, args_info,
+                              params,
+                              additional_error);
+
+    free (additional_error);
+    free (my_argv_arg);
+  }
+
+  free_cmd_list();
+  if (result == EXIT_FAILURE)
+    {
+      cmdline_parser_free (args_info);
+      exit (EXIT_FAILURE);
+    }
+  
+  return result;
+}
diff --git a/pgfuse_cmdline.h b/pgfuse_cmdline.h
new file mode 100644
index 0000000..4245031
--- /dev/null
+++ b/pgfuse_cmdline.h
@@ -0,0 +1,208 @@
+/** @file pgfuse_cmdline.h
+ *  @brief The header file for the command line option parser
+ *  generated by GNU Gengetopt version 2.22.5
+ *  http://www.gnu.org/software/gengetopt.
+ *  DO NOT modify this file, since it can be overwritten
+ *  @author GNU Gengetopt by Lorenzo Bettini */
+
+#ifndef PGFUSE_CMDLINE_H
+#define PGFUSE_CMDLINE_H
+
+/* If we use autoconf.  */
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <stdio.h> /* for FILE */
+
+#ifdef __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+
+#ifndef CMDLINE_PARSER_PACKAGE
+/** @brief the program name (used for printing errors) */
+#define CMDLINE_PARSER_PACKAGE "pgfuse"
+#endif
+
+#ifndef CMDLINE_PARSER_PACKAGE_NAME
+/** @brief the complete program name (used for help and version) */
+#define CMDLINE_PARSER_PACKAGE_NAME "pgfuse"
+#endif
+
+#ifndef CMDLINE_PARSER_VERSION
+/** @brief the program version */
+#define CMDLINE_PARSER_VERSION "0.0.1"
+#endif
+
+/** @brief Where the command line options are stored */
+struct gengetopt_args_info
+{
+  const char *help_help; /**< @brief Print help and exit help description.  */
+  const char *version_help; /**< @brief Print version and exit help description.  */
+  const char *ro_help; /**< @brief Do not allow write operations, only read operations help description.  */
+  unsigned int debug_min; /**< @brief Increase debug level (option can be given many times)'s minimum occurreces */
+  unsigned int debug_max; /**< @brief Increase debug level (option can be given many times)'s maximum occurreces */
+  const char *debug_help; /**< @brief Increase debug level (option can be given many times) help description.  */
+  const char *test_help; /**< @brief Test the configuration without running pgfuse help description.  */
+  char * config_file_arg;	/**< @brief An optional configuration file to be read by pgfuse.  */
+  char * config_file_orig;	/**< @brief An optional configuration file to be read by pgfuse original value given at command line.  */
+  const char *config_file_help; /**< @brief An optional configuration file to be read by pgfuse help description.  */
+  
+  unsigned int help_given ;	/**< @brief Whether help was given.  */
+  unsigned int version_given ;	/**< @brief Whether version was given.  */
+  unsigned int ro_given ;	/**< @brief Whether ro was given.  */
+  unsigned int debug_given ;	/**< @brief Whether debug was given.  */
+  unsigned int test_given ;	/**< @brief Whether test was given.  */
+  unsigned int config_file_given ;	/**< @brief Whether config-file was given.  */
+
+} ;
+
+/** @brief The additional parameters to pass to parser functions */
+struct cmdline_parser_params
+{
+  int override; /**< @brief whether to override possibly already present options (default 0) */
+  int initialize; /**< @brief whether to initialize the option structure gengetopt_args_info (default 1) */
+  int check_required; /**< @brief whether to check that all required options were provided (default 1) */
+  int check_ambiguity; /**< @brief whether to check for options already specified in the option structure gengetopt_args_info (default 0) */
+  int print_errors; /**< @brief whether getopt_long should print an error message for a bad option (default 1) */
+} ;
+
+/** @brief the purpose string of the program */
+extern const char *gengetopt_args_info_purpose;
+/** @brief the usage string of the program */
+extern const char *gengetopt_args_info_usage;
+/** @brief all the lines making the help output */
+extern const char *gengetopt_args_info_help[];
+
+/**
+ * The command line parser
+ * @param argc the number of command line options
+ * @param argv the command line options
+ * @param args_info the structure where option information will be stored
+ * @return 0 if everything went fine, NON 0 if an error took place
+ */
+int cmdline_parser (int argc, char **argv,
+  struct gengetopt_args_info *args_info);
+
+/**
+ * The command line parser (version with additional parameters - deprecated)
+ * @param argc the number of command line options
+ * @param argv the command line options
+ * @param args_info the structure where option information will be stored
+ * @param override whether to override possibly already present options
+ * @param initialize whether to initialize the option structure my_args_info
+ * @param check_required whether to check that all required options were provided
+ * @return 0 if everything went fine, NON 0 if an error took place
+ * @deprecated use cmdline_parser_ext() instead
+ */
+int cmdline_parser2 (int argc, char **argv,
+  struct gengetopt_args_info *args_info,
+  int override, int initialize, int check_required);
+
+/**
+ * The command line parser (version with additional parameters)
+ * @param argc the number of command line options
+ * @param argv the command line options
+ * @param args_info the structure where option information will be stored
+ * @param params additional parameters for the parser
+ * @return 0 if everything went fine, NON 0 if an error took place
+ */
+int cmdline_parser_ext (int argc, char **argv,
+  struct gengetopt_args_info *args_info,
+  struct cmdline_parser_params *params);
+
+/**
+ * Save the contents of the option struct into an already open FILE stream.
+ * @param outfile the stream where to dump options
+ * @param args_info the option struct to dump
+ * @return 0 if everything went fine, NON 0 if an error took place
+ */
+int cmdline_parser_dump(FILE *outfile,
+  struct gengetopt_args_info *args_info);
+
+/**
+ * Save the contents of the option struct into a (text) file.
+ * This file can be read by the config file parser (if generated by gengetopt)
+ * @param filename the file where to save
+ * @param args_info the option struct to save
+ * @return 0 if everything went fine, NON 0 if an error took place
+ */
+int cmdline_parser_file_save(const char *filename,
+  struct gengetopt_args_info *args_info);
+
+/**
+ * Print the help
+ */
+void cmdline_parser_print_help(void);
+/**
+ * Print the version
+ */
+void cmdline_parser_print_version(void);
+
+/**
+ * Initializes all the fields a cmdline_parser_params structure 
+ * to their default values
+ * @param params the structure to initialize
+ */
+void cmdline_parser_params_init(struct cmdline_parser_params *params);
+
+/**
+ * Allocates dynamically a cmdline_parser_params structure and initializes
+ * all its fields to their default values
+ * @return the created and initialized cmdline_parser_params structure
+ */
+struct cmdline_parser_params *cmdline_parser_params_create(void);
+
+/**
+ * Initializes the passed gengetopt_args_info structure's fields
+ * (also set default values for options that have a default)
+ * @param args_info the structure to initialize
+ */
+void cmdline_parser_init (struct gengetopt_args_info *args_info);
+/**
+ * Deallocates the string fields of the gengetopt_args_info structure
+ * (but does not deallocate the structure itself)
+ * @param args_info the structure to deallocate
+ */
+void cmdline_parser_free (struct gengetopt_args_info *args_info);
+
+/**
+ * The config file parser (deprecated version)
+ * @param filename the name of the config file
+ * @param args_info the structure where option information will be stored
+ * @param override whether to override possibly already present options
+ * @param initialize whether to initialize the option structure my_args_info
+ * @param check_required whether to check that all required options were provided
+ * @return 0 if everything went fine, NON 0 if an error took place
+ * @deprecated use cmdline_parser_config_file() instead
+ */
+int cmdline_parser_configfile (const char *filename,
+  struct gengetopt_args_info *args_info,
+  int override, int initialize, int check_required);
+
+/**
+ * The config file parser
+ * @param filename the name of the config file
+ * @param args_info the structure where option information will be stored
+ * @param params additional parameters for the parser
+ * @return 0 if everything went fine, NON 0 if an error took place
+ */
+int cmdline_parser_config_file (const char *filename,
+  struct gengetopt_args_info *args_info,
+  struct cmdline_parser_params *params);
+
+/**
+ * Checks that all the required options were specified
+ * @param args_info the structure to check
+ * @param prog_name the name of the program that will be used to print
+ *   possible errors
+ * @return
+ */
+int cmdline_parser_required (struct gengetopt_args_info *args_info,
+  const char *prog_name);
+
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+#endif /* PGFUSE_CMDLINE_H */