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
  36
  37 CaptiveVfsObject *capfuse_captive_vfs_object;
  38
  39 static const struct poptOption popt_table[]={
  40         CAPTIVE_POPT_INCLUDE,
  41         POPT_AUTOHELP
  42         POPT_TABLEEND
  43         };
  44
  45 static const struct fuse_operations capfuse_operations={
  46         statfs:     op_statfs,
  47         fsync:      op_fsync,
  48         fsyncdir:   op_fsyncdir,
  49 #if 0
  50         getattr:    op_getattr,
  51         mknod:      op_mknod,
  52         mkdir:      op_mkdir,
  53         unlink:     op_unlink,
  54         rmdir:      op_rmdir,
  55         rename:     op_rename,
  56         chmod:      op_chmod,
  57         truncate:   op_truncate,
  58         utime:      op_utime,
  59         open:       op_open,
  60         read:       op_read,
  61         write:      op_write,
  62         flush:      op_flush,
  63         release:    op_release,
  64         opendir:    op_opendir,
  65         readdir:    op_readdir,
  66         releasedir: op_releasedir,
  67 #endif
  68         };
  69
  70 /* argv[0] expected as the program name. */
  71 /* Only options and mountpoint expected here. */
  72 static void capfuse_run(int argc,const char **argv)
  73 {
  74 char *capfuse_mountpoint;
  75 int capfuse_multithreaded,capfuse_fd;
  76 struct fuse *capfuse_fuse;
  77
  78         if (!(capfuse_fuse=fuse_setup(
  79                                 argc,   /* argc */
  80                                 (/*de-const; broken fuset_setup()*/char **)argv,        /* argv */
  81                                 &capfuse_operations,    /* op */
  82                                 sizeof(capfuse_operations),     /* op_size */
  83                         &capfuse_mountpoint,    /* mountpoint */
  84                         &capfuse_multithreaded, /* multithreaded */
  85                         &capfuse_fd)))  /* fd */
  86                 g_error(_("FUSE fuse_setup() failed"));
  87         if (fuse_loop(capfuse_fuse))
  88                 g_error(_("FUSE fuse_loop() error: %m"));
  89         fuse_teardown(capfuse_fuse,capfuse_fd,capfuse_mountpoint);
  90 }
  91
  92 int main(int argc,char **argv)
  93 {
  94 poptContext context;
  95 int errint;
  96 int rest_argc;
  97 const char **rest_argv,**csp;
  98 struct captive_options options;
  99 const char **capfuse_argv;
 100
 101         g_log_set_always_fatal(~(0
 102                         |G_LOG_LEVEL_MESSAGE
 103                         |G_LOG_LEVEL_INFO
 104                         |G_LOG_LEVEL_DEBUG
 105                         ));
 106
 107         /* Prevent output block buffering if redirecting stdout to file. */
 108         setvbuf(stdout,(char *)NULL,_IONBF,0);
 109         setvbuf(stderr,(char *)NULL,_IONBF,0);
 110
 111         /* Initialize the i18n stuff */
 112         setlocale(LC_ALL,"");
 113         bindtextdomain(PACKAGE,LOCALEDIR);
 114         textdomain(PACKAGE);
 115
 116         /* Initialize GObject subsystem of GLib. */
 117         g_type_init();
 118
 119         captive_options_init(&options);
 120         captive_options=&options;       /* for parsing by 'CAPTIVE_POPT_INCLUDE' */
 121
 122         context=poptGetContext(
 123                         PACKAGE,        /* name */
 124                         argc,(/*en-const*/const char **)argv,   /* argc,argv */
 125                         popt_table,     /* options */
 126                         POPT_CONTEXT_POSIXMEHARDER);    /* flags; && !POPT_CONTEXT_KEEP_FIRST */
 127         if (context==NULL) {
 128                 g_error(_("Error parsing command-line arguments"));
 129                 return EXIT_FAILURE;
 130                 }
 131         errint=poptReadDefaultConfig(context,
 132                         TRUE);  /* useEnv */
 133         if (errint!=0)
 134                 g_warning(_("Error reading default popt configuration"));
 135         errint=poptGetNextOpt(context);
 136         if (errint!=-1) {
 137                 g_error(_("Error parsing (dash-prefixed) command-line argument"));
 138                 return EXIT_FAILURE;
 139                 }
 140         rest_argv=poptGetArgs(context);
 141         for (csp=rest_argv,rest_argc=0;csp && *csp;csp++)
 142                 rest_argc++;
 143
 144         captive_options=NULL;   /* already parsed by 'CAPTIVE_POPT_INCLUDE' */
 145
 146         /* image_iochannel */
 147         if (rest_argc<1) {
 148                 g_error(_("File/device disk image pathname command-line argument required"));
 149                 return EXIT_FAILURE;
 150                 }
 151         g_assert(options.image_iochannel==NULL);
 152         if (!(options.image_iochannel=g_io_channel_new_file(
 153                         rest_argv[0],   /* filename */
 154                         (options.rwmode==CAPTIVE_OPTION_RWMODE_RW ? "r+" : "r"),        /* mode */
 155                         NULL))) {       /* error */
 156                 g_error(_("image_iochannel open failed"));
 157                 return EXIT_FAILURE;
 158                 }
 159
 160         if (options.filesystem.type==CAPTIVE_OPTIONS_MODULE_TYPE_EMPTY) {
 161                 g_error(_("'--filesystem' option required ('ntfs.sys' pathname suggested)"));
 162                 return EXIT_FAILURE;
 163                 }
 164         if (!options.load_module) {
 165                 g_warning(_("'--load-module' option required ('ntoskrnl.exe' pathname suggested)"));
 166                 return EXIT_FAILURE;
 167                 }
 168
 169         if (GNOME_VFS_OK!=captive_vfs_new(&capfuse_captive_vfs_object,&options)) {
 170                 g_error(_("captive_vfs_new() failed"));
 171                 return EXIT_FAILURE;
 172                 }
 173         captive_options_free(&options);
 174         rest_argc--;
 175         rest_argv++;
 176
 177         /* Simulate argv[0] there as it got cut by popt. */
 178         captive_newn_alloca(capfuse_argv,1+rest_argc+1);
 179         capfuse_argv[0]=argv[0];
 180         memcpy(capfuse_argv+1,rest_argv,sizeof(*rest_argv)*(rest_argc+1));
 181
 182         /* FIXFUSE: fuse_main()/fuse_main_real() would be enough for Captive fuse but
 183          * the public interface of fuse_main() is too broken.
 184          */
 185         capfuse_run(1+rest_argc,capfuse_argv);
 186
 187         /* 'rest_argv' gets cleared by 'poptFreeContext(context);' below */
 188         poptFreeContext(context);
 189
 190         if (capfuse_captive_vfs_object) {
 191                 g_object_unref(capfuse_captive_vfs_object);
 192                 capfuse_captive_vfs_object=NULL;
 193                 }
 194
 195         return EXIT_SUCCESS;
 196 }