summaryrefslogtreecommitdiff
path: root/ufs/main.c
blob: 1ae0d7495a668e215dc3b94df4b72e195c207450 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
/* 
   Copyright (C) 1994 Free Software Foundation

   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 2, 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, write to the Free Software
   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */


#include "ufs.h"
#include "fs.h"
#include <stdarg.h>
#include <stdio.h>
#include <device/device.h>
#include <hurd/startup.h>

char *ufs_version = "0.0 pre-alpha";

static char **save_argv;

/* Parse the arguments for ufs when started as a translator. */
char *
trans_parse_args (int argc, char **arg)
{
  #ifdef notyet
  /* Option to set compat_mode should be provided here. */

  /* When started as a translator, we are called with
     the device name and an optional argument -r, which
     signifies read-only. */
  if (argc < 2 || argc > 3)
    usage_trans ();
  if (argc == 2)
    devname = argv[1];
  else if (argc == 3)
    {
      if (argv[1][0] == '-' && argv[1][1] == 'r')
	{
	  diskfs_readonly = 1;
	  devname = argv[2];
	}
      else if (argv[2][0] == '-' && argv[2][1] == 'r')
	{
	  diskfs_readonly = 1;
	  devname = argv[1];
	}
      else
	usage_trans ();
    }
  
  get_privileged_ports (&host_priv_port, &master_device_port);
  if (!master_device_port)
    {
      fprintf (stderr, "%s: Cannot get master device port\n",
	       argv[0]);
      exit (1);
    }
  /* We only need the host port if we are a bootstrap filesystem. */
  if (host_priv_port)
    mach_port_deallocate (mach_task_self (), host_priv_port);

  mach_port_insert_right (mach_task_self (), ufs_control_port,
			  ufs_control_port, MACH_MSG_TYPE_MAKE_SEND);
  fsys_startup (bootstrap, ufs_control_port, &ufs_realnode);
  mach_port_deallocate (mach_task_self (), ufs_control_port);
#else
  task_terminate (mach_task_self ());
  for (;;);
#endif
}

struct node *diskfs_root_node;

/* Set diskfs_root_node to the root inode. */
static void
warp_root (void)
{
  error_t err;
  err = iget (2, &diskfs_root_node);
  assert (!err);
  mutex_unlock (&diskfs_root_node->lock);
}

/* XXX */
struct mutex printf_lock;
int printf (const char *fmt, ...)
{
  va_list arg;
  int done;
  va_start (arg, fmt);
  mutex_lock (&printf_lock);
  done = vprintf (fmt, arg);
  mutex_unlock (&printf_lock);
  va_end (arg);
  return done;
}

int diskfs_readonly;

void
main (int argc, char **argv)
{
  char *devname;
  mach_port_t bootstrap;
  error_t err;
  int sizes[DEV_GET_SIZE_COUNT];
  u_int sizescnt = 2;

 
  save_argv = argv;

  mutex_init (&printf_lock);	/* XXX */

  task_get_bootstrap_port (mach_task_self (), &bootstrap);
  
  if (bootstrap)
    devname = trans_parse_args (argc, argv);
  else
    {
      devname = diskfs_parse_bootargs (argc, argv);
      compat_mode = COMPAT_GNU;
    }
  
  diskfs_init_diskfs (bootstrap);
  
  err = device_open (diskfs_master_device, 
		     (diskfs_readonly ? 0 : D_WRITE) | D_READ,
		     devname, &ufs_device);
  assert (!err);

  /* Check to make sure device sector size is reasonable. */
  err = device_get_status (ufs_device, DEV_GET_SIZE, sizes, &sizescnt);
  assert (sizescnt == DEV_GET_SIZE_COUNT);
  if (sizes[DEV_GET_SIZE_RECORD_SIZE] != DEV_BSIZE)
    {
      fprintf (stderr, "Bad device record size %d (should be %d)\n",
	       sizes[DEV_GET_SIZE_RECORD_SIZE], DEV_BSIZE);
      exit (1);
    }
  
  get_hypermetadata ();

  /* Check to make sure device size is big enough.  */
  if (sizes[DEV_GET_SIZE_DEVICE_SIZE] != 0)
    if (sizes[DEV_GET_SIZE_DEVICE_SIZE] < sblock->fs_size * sblock->fs_fsize)
      {
	fprintf (stderr, 
		 "Disk size %d less than necessary "
		 "(superblock says we need %ld)\n",
		 sizes[DEV_GET_SIZE_DEVICE_SIZE],
		 sblock->fs_size * sblock->fs_fsize);
	exit (1);
      }

  /* If the filesystem has new features in it, don't pay attention to
     the user's request not to use them. */
  if ((sblock->fs_inodefmt == FS_44INODEFMT
       || direct_symlink_extension)
      && compat_mode == COMPAT_BSD42)
    compat_mode = COMPAT_BSD44;

  if (!diskfs_readonly)
    {
      sblock->fs_clean = 0;
      strcpy (sblock->fs_fsmnt, "Hurd /");
      sblock_dirty = 1;
      diskfs_set_hypermetadata (1, 0);
    }

  inode_init ();
  pager_init ();
  
  diskfs_spawn_first_thread ();
  
  warp_root ();
  
  if (!bootstrap)
    diskfs_start_bootstrap ();
  
  diskfs_main_request_loop ();
}


void
diskfs_init_completed ()
{
  mach_port_t proc, startup;
  error_t err;

  _hurd_proc_init (save_argv);
  proc = getproc();
  proc_register_version (proc, diskfs_host_priv, "ufs", HURD_RELEASE,
			 ufs_version);
  err = proc_getmsgport (proc, 1, &startup);
  if (!err)
    {
      startup_essential_task (startup, mach_task_self (), MACH_PORT_NULL,
			      "ufs", diskfs_host_priv);
      mach_port_deallocate (mach_task_self (), startup);
    }
  mach_port_deallocate (mach_task_self (), proc);
}