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 #include <syslog.h>
  28
  29 #include <captive/client-vfs.h>
  30 #include <captive/macros.h>
  31
  32 #include "main.h"       /* self */
  33 #include "op_statfs.h"
  34 #include "op_fsync.h"
  35 #include "op_fsyncdir.h"
  36 #include "op_opendir.h"
  37 #include "op_readdir.h"
  38 #include "op_releasedir.h"
  39 #include "op_open.h"
  40 #include "op_read.h"
  41 #include "op_release.h"
  42 #include "op_getattr.h"
  43 #include "op_mknod.h"
  44 #include "op_unlink.h"
  45 #include "op_mkdir.h"
  46 #include "op_rmdir.h"
  47 #include "op_chmod.h"
  48 #include "op_truncate.h"
  49 #include "op_write.h"
  50 #include "op_rename.h"
  51 #include "op_utime.h"
  52
  53
  54 /* Config: */
  55 /* FIXME: Dupe with libcaptive/client/options.c */
  56 #define DEFAULT_SYSLOG_FACILITY LOG_DAEMON
  57
  58
  59 CaptiveVfsObject *capfuse_captive_vfs_object;
  60
  61 static const struct poptOption popt_table[]={
  62         CAPTIVE_POPT_INCLUDE,
  63         POPT_AUTOHELP
  64         POPT_TABLEEND
  65         };
  66
  67 static const struct fuse_operations capfuse_operations={
  68         statfs:     op_statfs,
  69         fsync:      op_fsync,
  70         fsyncdir:   op_fsyncdir,
  71         opendir:    op_opendir,
  72         readdir:    op_readdir,
  73         releasedir: op_releasedir,
  74         open:       op_open,
  75         read:       op_read,
  76         release:    op_release,
  77         getattr:    op_getattr,
  78         mknod:      op_mknod,
  79         unlink:     op_unlink,
  80         mkdir:      op_mkdir,
  81         rmdir:      op_rmdir,
  82         chmod:      op_chmod,
  83         truncate:   op_truncate,
  84         write:      op_write,
  85         rename:     op_rename,
  86         utime:      op_utime,
  87         };
  88
  89 /* argv[0] expected as the program name. */
  90 /* Only options and mountpoint expected here. */
  91 static void capfuse_run(int argc,const char **argv)
  92 {
  93 char *capfuse_mountpoint;
  94 int capfuse_multithreaded,capfuse_fd;
  95 struct fuse *capfuse_fuse;
  96
  97         if (!(capfuse_fuse=fuse_setup(
  98                                 argc,   /* argc */
  99                                 (/*de-const; broken fuset_setup()*/char **)argv,        /* argv */
 100                                 &capfuse_operations,    /* op */
 101                                 sizeof(capfuse_operations),     /* op_size */
 102                         &capfuse_mountpoint,    /* mountpoint */
 103                         &capfuse_multithreaded, /* multithreaded */
 104                         &capfuse_fd)))  /* fd */
 105                 g_error(_("FUSE fuse_setup() failed"));
 106         if (fuse_loop(capfuse_fuse)) {
 107                 /* Do not: g_error(_("FUSE fuse_loop() error"));
 108                  * as it is caused on each umount(8).
 109                  * FIXME: Why?
 110                  */
 111                 }
 112         fuse_teardown(capfuse_fuse,capfuse_fd,capfuse_mountpoint);
 113 }
 114
 115 int main(int argc,char **argv)
 116 {
 117 poptContext context;
 118 int errint;
 119 int rest_argc;
 120 const char **rest_argv,**csp;
 121 struct captive_options options;
 122 const char **capfuse_argv;
 123 const char *program_name=argv[0];
 124 const char *sandbox_server_argv0=G_STRINGIFY(SBINDIR) "/captive-sandbox-server";
 125
 126         g_log_set_always_fatal(~(0
 127                         |G_LOG_LEVEL_MESSAGE
 128                         |G_LOG_LEVEL_INFO
 129                         |G_LOG_LEVEL_DEBUG
 130                         ));
 131
 132         /* Prevent output block buffering if redirecting stdout to file. */
 133         setvbuf(stdout,(char *)NULL,_IONBF,0);
 134         setvbuf(stderr,(char *)NULL,_IONBF,0);
 135
 136         /* Initialize the i18n stuff */
 137         setlocale(LC_ALL,"");
 138         bindtextdomain(PACKAGE,LOCALEDIR);
 139         textdomain(PACKAGE);
 140
 141         /* Initialize GObject subsystem of GLib. */
 142         g_type_init();
 143
 144 struct captive_options {
 145         struct captive_options_module filesystem;
 146         enum captive_option_rwmode rwmode;
 147         enum captive_option_media media;
 148         gboolean debug_messages;
 149         GIOChannel *image_iochannel;
 150         GList *load_module;     /* of 'struct captive_options_module *' */
 151         gboolean sandbox;
 152         char **sandbox_server_argv;
 153         gchar *sandbox_server_ior;
 154         gchar *bug_pathname;
 155         int syslog_facility;    /* LOG_*; -1 if not used */
 156         };
 157
 158         captive_options_init(&options);
 159         captive_options=&options;       /* for parsing by 'CAPTIVE_POPT_INCLUDE' */
 160
 161         g_assert(!options.sandbox_server_argv);
 162         g_assert(!options.sandbox_server_ior);
 163         /* captive_options_free(&options) will: g_free(options.sandbox_server_argv); */
 164         /* Allocation is so terrible to be compatible with: captive_options_copy() */
 165         options.sandbox_server_argv=g_malloc(2*sizeof(*options.sandbox_server_argv)+strlen(sandbox_server_argv0)+1);
 166         options.sandbox_server_argv[0]=(char *)(options.sandbox_server_argv+2);
 167         options.sandbox_server_argv[1]=NULL;
 168         strcpy(options.sandbox_server_argv[0],sandbox_server_argv0);
 169         options.sandbox=TRUE;
 170
 171         g_assert(!options.bug_pathname);
 172         options.bug_pathname=g_strdup(G_STRINGIFY(VARLIBCAPTIVEDIR) "/bug-%FT%T.captivebug.xml.gz");
 173
 174         options.syslog_facility=DEFAULT_SYSLOG_FACILITY;
 175
 176         context=poptGetContext(
 177                         PACKAGE,        /* name */
 178                         argc,(/*en-const*/const char **)argv,   /* argc,argv */
 179                         popt_table,     /* options */
 180                         POPT_CONTEXT_POSIXMEHARDER);    /* flags; && !POPT_CONTEXT_KEEP_FIRST */
 181         if (context==NULL) {
 182                 g_error(_("Error parsing command-line arguments"));
 183                 return EXIT_FAILURE;
 184                 }
 185         errint=poptReadDefaultConfig(context,
 186                         TRUE);  /* useEnv */
 187         if (errint!=0)
 188                 g_warning(_("Error reading default popt configuration"));
 189         errint=poptGetNextOpt(context);
 190         if (errint!=-1) {
 191                 g_error(_("Error parsing (dash-prefixed) command-line argument"));
 192                 return EXIT_FAILURE;
 193                 }
 194         rest_argv=poptGetArgs(context);
 195         for (csp=rest_argv,rest_argc=0;csp && *csp;csp++)
 196                 rest_argc++;
 197
 198         captive_options=NULL;   /* already parsed by 'CAPTIVE_POPT_INCLUDE' */
 199
 200         /* image_iochannel */
 201         if (rest_argc<1) {
 202                 g_error(_("File/device disk image pathname command-line argument required"));
 203                 return EXIT_FAILURE;
 204                 }
 205         g_assert(options.image_iochannel==NULL);
 206         if (!(options.image_iochannel=g_io_channel_new_file(
 207                         rest_argv[0],   /* filename */
 208                         (options.rwmode==CAPTIVE_OPTION_RWMODE_RW ? "r+" : "r"),        /* mode */
 209                         NULL))) {       /* error */
 210                 g_error(_("image_iochannel failed open of: %s"),rest_argv[0]);
 211                 return EXIT_FAILURE;
 212                 }
 213
 214         if (options.filesystem.type==CAPTIVE_OPTIONS_MODULE_TYPE_EMPTY) {
 215 const char *self_prefix="mount.captive-";
 216 size_t self_prefix_len=strlen(self_prefix);
 217 const char *fsname;
 218
 219                 if ((fsname=strrchr(program_name,'/')))
 220                         fsname++;
 221                 else
 222                         fsname=program_name;
 223                 if (strncmp(fsname,self_prefix,self_prefix_len))
 224                         g_error(_("Cannot detected default filesystem name from my basename: %s"),fsname);
 225                 fsname+=self_prefix_len;
 226                 if (!captive_options_module_load(&options.filesystem,
 227                                 captive_printf_alloca("%s/%s.sys",G_STRINGIFY(VARLIBCAPTIVEDIR),fsname)))
 228                         g_error(_("'--filesystem' option requires valid pathname ('ntfs.sys' suggested)"));
 229                 g_assert(options.filesystem.type!=CAPTIVE_OPTIONS_MODULE_TYPE_EMPTY);
 230                 }
 231         if (!options.load_module) {
 232 struct captive_options_module *options_module;
 233
 234                 captive_new(options_module);
 235                 if (!captive_options_module_load(options_module,G_STRINGIFY(VARLIBCAPTIVEDIR) "/ntoskrnl.exe"))
 236                         g_error(_("'--load-module' option requires valid pathname ('ntoskrnl.exe' suggested)"));
 237
 238                 options.load_module=g_list_append(options.load_module,options_module);
 239                 }
 240
 241         if (GNOME_VFS_OK!=captive_vfs_new(&capfuse_captive_vfs_object,&options)) {
 242                 g_error(_("captive_vfs_new() failed"));
 243                 return EXIT_FAILURE;
 244                 }
 245         captive_options_free(&options);
 246         rest_argc--;
 247         rest_argv++;
 248
 249         /* Simulate argv[0] there as it got cut by popt. */
 250         captive_newn_alloca(capfuse_argv,1+rest_argc+1);
 251         capfuse_argv[0]=argv[0];
 252         memcpy(capfuse_argv+1,rest_argv,sizeof(*rest_argv)*(rest_argc+1));
 253
 254         /* FIXFUSE: fuse_main()/fuse_main_real() would be enough for Captive fuse but
 255          * the public interface of fuse_main() is too broken.
 256          */
 257         capfuse_run(1+rest_argc,capfuse_argv);
 258
 259         /* 'rest_argv' gets cleared by 'poptFreeContext(context);' below */
 260         poptFreeContext(context);
 261
 262         if (capfuse_captive_vfs_object) {
 263                 g_object_unref(capfuse_captive_vfs_object);
 264                 capfuse_captive_vfs_object=NULL;
 265                 }
 266
 267         return EXIT_SUCCESS;
 268 }