src/client/fuse/main.c

   1 /* $Id$
   2  * client FUSE interface for libcaptive
   3  * Copyright (C) 2005 Jan Kratochvil <project-captive@jankratochvil.net>
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; exactly version 2 of June 1991 is required
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write to the Free Software
  16  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  17  */
  18
  19
  20 #include "config.h"
  21
  22 #include <fuse.h>
  23 #include <popt.h>
  24 #include <locale.h>
  25 #include <stdlib.h>
  26 #include <string.h>
  27
  28 #include <captive/client-vfs.h>
  29 #include <captive/macros.h>
  30
  31 #include "main.h"       /* self */
  32 #include "op_statfs.h"
  33 #include "op_fsync.h"
  34 #include "op_fsyncdir.h"
  35 #include "op_opendir.h"
  36 #include "op_readdir.h"
  37 #include "op_releasedir.h"
  38 #include "op_open.h"
  39 #include "op_read.h"
  40 #include "op_release.h"
  41 #include "op_getattr.h"
  42 #include "op_mknod.h"
  43 #include "op_unlink.h"
  44 #include "op_mkdir.h"
  45 #include "op_rmdir.h"
  46 #include "op_chmod.h"
  47 #include "op_truncate.h"
  48 #include "op_write.h"
  49 #include "op_rename.h"
  50 #include "op_utime.h"
  51
  52
  53 CaptiveVfsObject *capfuse_captive_vfs_object;
  54
  55 static const struct poptOption popt_table[]={
  56         CAPTIVE_POPT_INCLUDE,
  57         POPT_AUTOHELP
  58         POPT_TABLEEND
  59         };
  60
  61 static const struct fuse_operations capfuse_operations={
  62         statfs:     op_statfs,
  63         fsync:      op_fsync,
  64         fsyncdir:   op_fsyncdir,
  65         opendir:    op_opendir,
  66         readdir:    op_readdir,
  67         releasedir: op_releasedir,
  68         open:       op_open,
  69         read:       op_read,
  70         release:    op_release,
  71         getattr:    op_getattr,
  72         mknod:      op_mknod,
  73         unlink:     op_unlink,
  74         mkdir:      op_mkdir,
  75         rmdir:      op_rmdir,
  76         chmod:      op_chmod,
  77         truncate:   op_truncate,
  78         write:      op_write,
  79         rename:     op_rename,
  80         utime:      op_utime,
  81         };
  82
  83 /* argv[0] expected as the program name. */
  84 /* Only options and mountpoint expected here. */
  85 static void capfuse_run(int argc,const char **argv)
  86 {
  87 char *capfuse_mountpoint;
  88 int capfuse_multithreaded,capfuse_fd;
  89 struct fuse *capfuse_fuse;
  90
  91         if (!(capfuse_fuse=fuse_setup(
  92                                 argc,   /* argc */
  93                                 (/*de-const; broken fuset_setup()*/char **)argv,        /* argv */
  94                                 &capfuse_operations,    /* op */
  95                                 sizeof(capfuse_operations),     /* op_size */
  96                         &capfuse_mountpoint,    /* mountpoint */
  97                         &capfuse_multithreaded, /* multithreaded */
  98                         &capfuse_fd)))  /* fd */
  99                 g_error(_("FUSE fuse_setup() failed"));
 100         if (fuse_loop(capfuse_fuse)) {
 101                 /* Do not: g_error(_("FUSE fuse_loop() error"));
 102                  * as it is caused on each umount(8).
 103                  * FIXME: Why?
 104                  */
 105                 }
 106         fuse_teardown(capfuse_fuse,capfuse_fd,capfuse_mountpoint);
 107 }
 108
 109 int main(int argc,char **argv)
 110 {
 111 poptContext context;
 112 int errint;
 113 int rest_argc;
 114 const char **rest_argv,**csp;
 115 struct captive_options options;
 116 const char **capfuse_argv;
 117
 118         g_log_set_always_fatal(~(0
 119                         |G_LOG_LEVEL_MESSAGE
 120                         |G_LOG_LEVEL_INFO
 121                         |G_LOG_LEVEL_DEBUG
 122                         ));
 123
 124         /* Prevent output block buffering if redirecting stdout to file. */
 125         setvbuf(stdout,(char *)NULL,_IONBF,0);
 126         setvbuf(stderr,(char *)NULL,_IONBF,0);
 127
 128         /* Initialize the i18n stuff */
 129         setlocale(LC_ALL,"");
 130         bindtextdomain(PACKAGE,LOCALEDIR);
 131         textdomain(PACKAGE);
 132
 133         /* Initialize GObject subsystem of GLib. */
 134         g_type_init();
 135
 136         captive_options_init(&options);
 137         captive_options=&options;       /* for parsing by 'CAPTIVE_POPT_INCLUDE' */
 138
 139         context=poptGetContext(
 140                         PACKAGE,        /* name */
 141                         argc,(/*en-const*/const char **)argv,   /* argc,argv */
 142                         popt_table,     /* options */
 143                         POPT_CONTEXT_POSIXMEHARDER);    /* flags; && !POPT_CONTEXT_KEEP_FIRST */
 144         if (context==NULL) {
 145                 g_error(_("Error parsing command-line arguments"));
 146                 return EXIT_FAILURE;
 147                 }
 148         errint=poptReadDefaultConfig(context,
 149                         TRUE);  /* useEnv */
 150         if (errint!=0)
 151                 g_warning(_("Error reading default popt configuration"));
 152         errint=poptGetNextOpt(context);
 153         if (errint!=-1) {
 154                 g_error(_("Error parsing (dash-prefixed) command-line argument"));
 155                 return EXIT_FAILURE;
 156                 }
 157         rest_argv=poptGetArgs(context);
 158         for (csp=rest_argv,rest_argc=0;csp && *csp;csp++)
 159                 rest_argc++;
 160
 161         captive_options=NULL;   /* already parsed by 'CAPTIVE_POPT_INCLUDE' */
 162
 163         /* image_iochannel */
 164         if (rest_argc<1) {
 165                 g_error(_("File/device disk image pathname command-line argument required"));
 166                 return EXIT_FAILURE;
 167                 }
 168         g_assert(options.image_iochannel==NULL);
 169         if (!(options.image_iochannel=g_io_channel_new_file(
 170                         rest_argv[0],   /* filename */
 171                         (options.rwmode==CAPTIVE_OPTION_RWMODE_RW ? "r+" : "r"),        /* mode */
 172                         NULL))) {       /* error */
 173                 g_error(_("image_iochannel open failed"));
 174                 return EXIT_FAILURE;
 175                 }
 176
 177         if (options.filesystem.type==CAPTIVE_OPTIONS_MODULE_TYPE_EMPTY) {
 178                 g_error(_("'--filesystem' option required ('ntfs.sys' pathname suggested)"));
 179                 return EXIT_FAILURE;
 180                 }
 181         if (!options.load_module) {
 182                 g_warning(_("'--load-module' option required ('ntoskrnl.exe' pathname suggested)"));
 183                 return EXIT_FAILURE;
 184                 }
 185
 186         if (GNOME_VFS_OK!=captive_vfs_new(&capfuse_captive_vfs_object,&options)) {
 187                 g_error(_("captive_vfs_new() failed"));
 188                 return EXIT_FAILURE;
 189                 }
 190         captive_options_free(&options);
 191         rest_argc--;
 192         rest_argv++;
 193
 194         /* Simulate argv[0] there as it got cut by popt. */
 195         captive_newn_alloca(capfuse_argv,1+rest_argc+1);
 196         capfuse_argv[0]=argv[0];
 197         memcpy(capfuse_argv+1,rest_argv,sizeof(*rest_argv)*(rest_argc+1));
 198
 199         /* FIXFUSE: fuse_main()/fuse_main_real() would be enough for Captive fuse but
 200          * the public interface of fuse_main() is too broken.
 201          */
 202         capfuse_run(1+rest_argc,capfuse_argv);
 203
 204         /* 'rest_argv' gets cleared by 'poptFreeContext(context);' below */
 205         poptFreeContext(context);
 206
 207         if (capfuse_captive_vfs_object) {
 208                 g_object_unref(capfuse_captive_vfs_object);
 209                 capfuse_captive_vfs_object=NULL;
 210                 }
 211
 212         return EXIT_SUCCESS;
 213 }