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/*
Copyright (C) 1994, 1995, 1996 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 <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>
char *ufs_version = "0.0";
struct node *diskfs_root_node;
/* 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 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->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 *startup_parents[] = { &diskfs_std_device_startup_argp, 0};
static struct argp startup_argp = {options, parse_opt, 0, 0, startup_parents};
/* Similarly at runtime. */
static const struct argp *runtime_parents[] = {&diskfs_std_runtime_argp, 0};
static struct argp runtime_argp = {options, parse_opt, 0, 0, runtime_parents};
struct argp *diskfs_runtime_argp = (struct argp *)&runtime_argp;
/* Override the standard diskfs routine so we can add our own output. */
error_t
diskfs_get_options (char **argz, unsigned *argz_len)
{
error_t err;
*argz = 0;
*argz_len = 0;
/* 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)
free (argz); /* Deallocate what diskfs returned. */
}
return err;
}
int
main (int argc, char **argv)
{
error_t err;
off_t disk_size;
mach_port_t bootstrap;
argp_parse (&startup_argp, argc, argv, 0, 0, 0);
/* This must come after the args have been parsed, as this is where the
host priv ports are set for booting. */
diskfs_console_stdio ();
if (diskfs_boot_flags)
{
/* We are the bootstrap filesystem. */
bootstrap = MACH_PORT_NULL;
diskfs_use_mach_device = 1;
compat_mode = COMPAT_GNU;
}
else
{
task_get_bootstrap_port (mach_task_self (), &bootstrap);
if (bootstrap == MACH_PORT_NULL)
error (2, 0, "Must be started as a translator");
}
/* Initialize the diskfs library. Must come before any other diskfs call. */
err = diskfs_init_diskfs ();
if (err)
error (4, err, "init");
err = diskfs_device_open ();
if (err)
error (3, err, "%s", diskfs_device_arg);
if (diskfs_device_block_size != DEV_BSIZE)
error (4, err, "%s: Bad device record size %d (should be %d)",
diskfs_device_arg, diskfs_device_block_size, DEV_BSIZE);
if (diskfs_log2_device_block_size == 0)
error (4, err, "%s: Device block size (%d) not a power of 2",
diskfs_device_arg, diskfs_device_block_size);
disk_size = diskfs_device_size << diskfs_log2_device_block_size;
assert (disk_size >= SBSIZE + SBOFF);
/* Map the entire disk. */
create_disk_pager ();
/* Start the first request thread, to handle RPCs and page requests. */
diskfs_spawn_first_thread ();
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);
/* And this thread is done with its work. */
cthread_exit (0);
return 0;
}
error_t
diskfs_reload_global_state ()
{
flush_pokes ();
pager_flush (disk_pager, 1);
get_hypermetadata ();
return 0;
}
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