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/*
Copyright (C) 1994,95,96,97,98,99 Free Software Foundation, Inc.
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 <stdarg.h>
#include <stdio.h>
#include <error.h>
#include <device/device.h>
#include <fcntl.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#include <argz.h>
#include <argp.h>
#include <hurd/store.h>
struct node *diskfs_root_node;
struct store *store = 0;
struct store_parsed *store_parsed = 0;
char *diskfs_disk_name = 0;
/* Number of device blocks per DEV_BSIZE block. */
unsigned log2_dev_blocks_per_dev_bsize = 0;
/* Set diskfs_root_node to the root inode. */
static void
warp_root (void)
{
error_t err;
err = diskfs_cached_lookup (2, &diskfs_root_node);
assert (!err);
mutex_unlock (&diskfs_root_node->lock);
}
/* XXX */
struct mutex printf_lock = MUTEX_INITIALIZER;
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;
/* Ufs-specific options. XXX this should be moved so it can be done at
runtime as well as startup. */
static const struct argp_option
options[] =
{
{"compat", 'C', "FMT", 0,
"FMT may be GNU, 4.4, or 4.2, and determines which filesystem extensions"
" are written onto the disk (default is GNU)"},
{0}
};
/* Parse a ufs-specific command line option. */
static error_t
parse_opt (int key, char *arg, struct argp_state *state)
{
switch (key)
{
enum compat_mode mode;
case 'C':
if (strcasecmp (arg, "gnu") == 0)
mode = COMPAT_GNU;
else if (strcmp (arg, "4.4") == 0)
mode = COMPAT_BSD44;
else if (strcmp (arg, "4.2") == 0)
{
if (sblock
&& (sblock->fs_inodefmt == FS_44INODEFMT
|| direct_symlink_extension))
{
argp_failure (state, 0, 0,
"4.2 compat mode requested on 4.4 fs");
return EINVAL;
}
mode = COMPAT_BSD42;
}
else
{
argp_error (state, "%s: Unknown compatibility mode", arg);
return EINVAL;
}
state->hook = (void *)mode; /* Save it for the end. */
break;
case ARGP_KEY_INIT:
state->child_inputs[0] = state->input;
state->hook = (void *)compat_mode; break;
case ARGP_KEY_SUCCESS:
compat_mode = (enum compat_mode)state->hook; break;
default:
return ARGP_ERR_UNKNOWN;
}
return 0;
}
/* Add our startup arguments to the standard diskfs set. */
static const struct argp_child startup_children[] =
{{&diskfs_store_startup_argp}, {0}};
static struct argp startup_argp = {options, parse_opt, 0, 0, startup_children};
/* Similarly at runtime. */
static const struct argp_child runtime_children[] =
{{&diskfs_std_runtime_argp}, {0}};
static struct argp runtime_argp = {options, parse_opt, 0, 0, runtime_children};
struct argp *diskfs_runtime_argp = (struct argp *)&runtime_argp;
/* Override the standard diskfs routine so we can add our own output. */
error_t
diskfs_append_args (char **argz, unsigned *argz_len)
{
error_t err;
/* Get the standard things. */
err = diskfs_append_std_options (argz, argz_len);
if (!err && compat_mode != COMPAT_GNU)
err = argz_add (argz, argz_len,
((compat_mode == COMPAT_BSD42)
? "--compat=4.2"
: "--compat=4.4"));
if (! err)
err = store_parsed_append_args (store_parsed, argz, argz_len);
return err;
}
int
main (int argc, char **argv)
{
mach_port_t bootstrap;
/* Initialize the diskfs library, parse arguments, and open the store.
This starts the first diskfs thread for us. */
store = diskfs_init_main (&startup_argp, argc, argv,
&store_parsed, &bootstrap);
if (store->block_size > DEV_BSIZE)
error (4, 0, "%s: Bad device block size %d (should be <= %d)",
diskfs_disk_name, store->block_size, DEV_BSIZE);
if (store->size < SBSIZE + SBOFF)
error (5, 0, "%s: Disk too small (%ld bytes)", diskfs_disk_name,
store->size);
log2_dev_blocks_per_dev_bsize = 0;
while ((1 << log2_dev_blocks_per_dev_bsize) < DEV_BSIZE)
log2_dev_blocks_per_dev_bsize++;
log2_dev_blocks_per_dev_bsize -= store->log2_block_size;
/* Map the entire disk. */
create_disk_pager ();
get_hypermetadata ();
inode_init ();
/* Find our root node. */
warp_root ();
/* Now that we are all set up to handle requests, and diskfs_root_node is
set properly, it is safe to export our fsys control port to the
outside world. */
diskfs_startup_diskfs (bootstrap, 0);
/* SET HOST NAME */
/* And this thread is done with its work. */
cthread_exit (0);
return 0;
}
error_t
diskfs_reload_global_state ()
{
flush_pokes ();
pager_flush (diskfs_disk_pager, 1);
get_hypermetadata ();
return 0;
}
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