servers/hgfs/hgfs.c

   1 /* This file contains the implementation of the HGFS file system server.
   2  * The file system side is handled by libsffs, whereas the host communication
   3  * is handled by libhgfs. This file mainly contains the glue between them.
   4  *
   5  * The entry points into this file are:
   6  *   main               main program function
   7  *
   8  * Created:
   9  *   April 2009 (D.C. van Moolenbroek)
  10  */
  11
  12 #include <minix/drivers.h>
  13 #include <minix/sffs.h>
  14 #include <minix/hgfs.h>
  15 #include <minix/optset.h>
  16
  17 static struct sffs_params params;
  18
  19 static struct optset optset_table[] = {
  20   { "prefix",   OPT_STRING, params.p_prefix,       sizeof(params.p_prefix) },
  21   { "uid",      OPT_INT,    &params.p_uid,         10                      },
  22   { "gid",      OPT_INT,    &params.p_gid,         10                      },
  23   { "fmask",    OPT_INT,    &params.p_file_mask,   8                       },
  24   { "dmask",    OPT_INT,    &params.p_dir_mask,    8                       },
  25   { "icase",    OPT_BOOL,   &params.p_case_insens, TRUE                    },
  26   { "noicase",  OPT_BOOL,   &params.p_case_insens, FALSE                   },
  27   { NULL,       0,          NULL,                  0                       }
  28 };
  29
  30 /*===========================================================================*
  31  *                              sef_cb_init_fresh                            *
  32  *===========================================================================*/
  33 static int sef_cb_init_fresh(int UNUSED(type), sef_init_info_t *UNUSED(info))
  34 {
  35 /* Initialize this file server. Called at startup time.
  36  */
  37   const struct sffs_table *table;
  38   int i, r;
  39
  40   /* Defaults */
  41   params.p_prefix[0] = 0;
  42   params.p_uid = 0;
  43   params.p_gid = 0;
  44   params.p_file_mask = 0755;
  45   params.p_dir_mask = 0755;
  46   params.p_case_insens = FALSE;
  47
  48   /* If we have been given an options string, parse options from there. */
  49   for (i = 1; i < env_argc - 1; i++)
  50         if (!strcmp(env_argv[i], "-o"))
  51                 optset_parse(optset_table, env_argv[++i]);
  52
  53   /* Initialize the HGFS library. If this fails, exit immediately. */
  54   if ((r = hgfs_init(&table)) != OK) {
  55         if (r == EAGAIN)
  56                 printf("HGFS: shared folders are disabled\n");
  57         else
  58                 printf("HGFS: unable to initialize HGFS library (%d)\n", r);
  59
  60         return r;
  61   }
  62
  63   /* Now initialize the SFFS library. */
  64   if ((r = sffs_init("HGFS", table, &params)) != OK) {
  65         hgfs_cleanup();
  66
  67         return r;
  68   }
  69
  70   return OK;
  71 }
  72
  73 /*===========================================================================*
  74  *                              sef_local_startup                            *
  75  *===========================================================================*/
  76 static void sef_local_startup(void)
  77 {
  78 /* Local SEF initialization.
  79  */
  80
  81   /* Register init callback. */
  82   sef_setcb_init_fresh(sef_cb_init_fresh);
  83
  84   /* Register signal callback. SFFS handles this. */
  85   sef_setcb_signal_handler(sffs_signal);
  86
  87   sef_startup();
  88 }
  89
  90 /*===========================================================================*
  91  *                              main                                         *
  92  *===========================================================================*/
  93 int main(int argc, char **argv)
  94 {
  95 /* The main function of this file server.
  96  */
  97
  98   env_setargs(argc, argv);
  99   sef_local_startup();
 100
 101   sffs_loop();
 102
 103   hgfs_cleanup();
 104
 105   return 0;
 106 }