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super.c
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super.c
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/***************************************************************************
*
* Copyright (c) 1997-2022 Jeff V. Merkey
* 7260 SE Tenino St.
* Portland, Oregon 97206
* jeffmerkey@gmail.com
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the Lesser GNU Public License as published by the
* Free Software Foundation, version 2.1, or 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.
*
* Original Authorship :
* source code written by Jeff V. Merkey
*
* Original Contributors :
* Jeff V. Merkey
*
*
*
****************************************************************************
*
*
* AUTHOR : Jeff V. Merkey (jeffmerkey@gmail.com)
* FILE : SUPER.C
* DESCRIP : VFS Super Block Module for Linux* DATE : November 16, 1998
*
*
***************************************************************************/
#define NWFSMOD_VERSION_INFO 1
#include "globals.h"
#if (LINUX_24)
int nwfs_remount(struct super_block *sb, int *flags, char *data)
{
return 0;
}
struct super_block *nwfs_read_super(struct super_block *sb, void *data, int silent)
{
register VOLUME *volume;
BYTE name[64];
register BYTE *p, *n;
register ULONG count, AutoRepair = FALSE;
kdev_t dev = sb->s_dev;
#if (VERBOSE)
NWFSPrint("read super\n");
#endif
if (!data)
{
NWFSPrint("nwfs: missing VOLUME_NAME\n");
NWFSPrint("usage: mount [name] [/mount_point] -t nwfs -o VOLUME_NAME(+)\n");
NWFSPrint(" where VOLUME_NAME is the name of a NetWare file system Volume\n");
NWFSPrint(" and '+' enables the driver to auto-repair volume errors during volume mount\n");
NWFSPrint(" invoke NWVOL for a listing of detected NetWare Volumes in\n");
NWFSPrint(" this system.\n\n");
NWFSPrint(" Utilities for Linux are:\n");
NWFSPrint(" NWVOL - List detected NetWare volumes\n");
NWFSPrint(" NWDISK/NWCONFIG - File System/Partition Config Utility\n");
sb->s_dev = 0;
return NULL;
}
NWFSVolumeScan();
count = 0;
p = (BYTE *) data;
n = &name[0];
while (*p && (*p != ' ') && (*p != '\r') && (*p != '\n') && (*p != '+') &&
(count < 16))
{
*n++ = *p++;
count++;
}
*n = '\0';
if (*p == '+')
{
NWFSPrint("nwfs: volume auto-repair enabled\n");
AutoRepair = TRUE;
}
volume = MountHandledVolume(name);
if (!volume)
{
NWFSPrint("nwfs: error mounting volume %s\n", name);
sb->s_dev = 0;
return NULL;
}
sb->s_blocksize = LogicalBlockSize;
switch (sb->s_blocksize)
{
case 512:
sb->s_blocksize_bits = 9;
break;
case 1024:
sb->s_blocksize_bits = 10;
break;
case 2048:
sb->s_blocksize_bits = 11;
break;
case 4096:
sb->s_blocksize_bits = 12;
break;
}
sb->s_magic = _LINUX_FS_ID;
sb->s_dev = dev;
sb->s_op = &nwfs_sops;
sb->u.generic_sbp = (void *) volume;
sb->s_root = d_alloc_root(iget(sb, 0));
if (!sb->s_root)
{
NWFSPrint("nwfs: get root inode failed\n");
sb->s_dev = 0;
return NULL;
}
return sb;
}
void nwfs_put_super(struct super_block *sb)
{
register VOLUME *volume;
register ULONG retCode;
#if (VERBOSE)
NWFSPrint("put super\n");
#endif
sb->s_dev = 0;
volume = (VOLUME *) sb->u.generic_sbp;
sb->u.generic_sbp = 0;
retCode = DismountVolumeByHandle(volume);
if (retCode)
NWFSPrint("nwfs: errors dismounting volume %s", volume->VolumeName);
return;
}
int nwfs_statfs(struct super_block *sb, struct statfs *buf)
{
register VOLUME *volume = (VOLUME *) sb->u.generic_sbp;
register ULONG bpb = (IO_BLOCK_SIZE / LogicalBlockSize);
buf->f_type = _LINUX_FS_ID;
buf->f_bsize = LogicalBlockSize;
buf->f_blocks = volume->VolumeClusters * volume->BlocksPerCluster * bpb;
buf->f_bfree = volume->VolumeFreeClusters * volume->BlocksPerCluster * bpb;
buf->f_bavail = volume->VolumeFreeClusters * volume->BlocksPerCluster * bpb;
buf->f_namelen = 255;
return 0;
}
#endif
#if (LINUX_22)
int nwfs_remount(struct super_block *sb, int *flags, char *data)
{
return 0;
}
struct super_block *nwfs_read_super(struct super_block *sb, void *data, int silent)
{
register VOLUME *volume;
BYTE name[32];
register BYTE *p, *n;
register ULONG count, AutoRepair = FALSE;
kdev_t dev = sb->s_dev;
extern ULONG NWRepairVolume(VOLUME *volume, ULONG flags);
if (!data)
{
NWFSPrint("nwfs: missing VOLUME_NAME\n");
NWFSPrint("USAGE: mount [name] [/mount_point] -t nwfs -o VOLUME_NAME(+)\n");
NWFSPrint(" where VOLUME_NAME is the name of a NetWare file system Volume\n");
NWFSPrint(" and '+' enables the driver to auto-repair volume errors during volume mount\n");
NWFSPrint(" invoke NWVOL for a listing of detected NetWare Volumes in\n");
NWFSPrint(" this system.\n\n");
NWFSPrint(" Utilities for Linux are:\n");
NWFSPrint(" NWVOL - List detected NetWare volumes\n");
NWFSPrint(" NWDISK/NWCONFIG - File System/Partition Config Utility\n");
sb->s_dev = 0;
return NULL;
}
MOD_INC_USE_COUNT;
lock_super(sb);
NWFSVolumeScan();
count = 0;
p = (BYTE *) data;
n = &name[0];
while (*p && (*p != ' ') && (*p != '\r') && (*p != '\n') && (*p != '+') &&
(count < 16))
{
*n++ = *p++;
count++;
}
*n = '\0';
if (*p == '+')
{
NWFSPrint("nwfs: volume auto-repair enabled\n");
AutoRepair = TRUE;
}
volume = MountHandledVolume(name);
if (!volume)
{
NWFSPrint("nwfs: error mounting volume %s\n", name);
sb->s_dev = 0;
unlock_super(sb);
MOD_DEC_USE_COUNT;
return NULL;
}
sb->s_blocksize = LogicalBlockSize;
switch (sb->s_blocksize)
{
case 512:
sb->s_blocksize_bits = 9;
break;
case 1024:
sb->s_blocksize_bits = 10;
break;
case 2048:
sb->s_blocksize_bits = 11;
break;
case 4096:
sb->s_blocksize_bits = 12;
break;
}
sb->s_magic = _LINUX_FS_ID;
sb->s_dev = dev;
sb->s_op = &nwfs_sops;
sb->u.generic_sbp = (void *) volume;
sb->s_root = d_alloc_root(iget(sb, 0), NULL);
if (!sb->s_root)
{
NWFSPrint("nwfs: get root inode failed\n");
sb->s_dev = 0;
unlock_super(sb);
MOD_DEC_USE_COUNT;
return NULL;
}
unlock_super(sb);
return sb;
}
void nwfs_put_super(struct super_block *sb)
{
register VOLUME *volume;
register ULONG retCode;
sb->s_dev = 0;
volume = (VOLUME *) sb->u.generic_sbp;
sb->u.generic_sbp = 0;
retCode = DismountVolumeByHandle(volume);
if (retCode)
NWFSPrint("nwfs: errors dismounting volume %s", volume->VolumeName);
MOD_DEC_USE_COUNT;
return;
}
int nwfs_statfs(struct super_block *sb, struct statfs *buf, int bufsiz)
{
register VOLUME *volume = (VOLUME *) sb->u.generic_sbp;
register ULONG bpb = (IO_BLOCK_SIZE / LogicalBlockSize);
struct statfs tmp;
tmp.f_type = _LINUX_FS_ID;
tmp.f_bsize = LogicalBlockSize;
tmp.f_blocks = volume->VolumeClusters * volume->BlocksPerCluster * bpb;
tmp.f_bfree = volume->VolumeFreeClusters * volume->BlocksPerCluster * bpb;
tmp.f_bavail = volume->VolumeFreeClusters * volume->BlocksPerCluster * bpb;
tmp.f_files = 0;
tmp.f_ffree = 0;
tmp.f_namelen = 255;
return copy_to_user(buf, &tmp, bufsiz) ? -EFAULT : 0;
}
#endif
#if (LINUX_20)
int nwfs_remount(struct super_block *sb, int *flags, char *data)
{
return 0;
}
struct super_block *nwfs_read_super(struct super_block *sb, void *data, int silent)
{
register VOLUME *volume;
BYTE name[32];
register BYTE *p, *n;
register ULONG count, AutoRepair = FALSE;
kdev_t dev = sb->s_dev;
if (!data)
{
NWFSPrint("nwfs: missing VOLUME_NAME\n");
NWFSPrint("USAGE: mount [name] [/mount_point] -t nwfs -o VOLUME_NAME(+)\n");
NWFSPrint(" where VOLUME_NAME is the name of a NetWare file system Volume\n");
NWFSPrint(" and '+' enables the driver to auto-repair volume errors during volume mount\n");
NWFSPrint(" invoke NWVOL for a listing of detected NetWare Volumes in\n");
NWFSPrint(" this system.\n\n");
NWFSPrint(" Utilities for Linux are:\n");
NWFSPrint(" NWVOL - List detected NetWare volumes\n");
NWFSPrint(" NWDISK/NWCONFIG - File System/Partition Config Utility\n");
sb->s_dev = 0;
return NULL;
}
NWFSVolumeScan();
count = 0;
p = (BYTE *) data;
n = &name[0];
while (*p && (*p != ' ') && (*p != '\r') && (*p != '\n') && (*p != '+') &&
(count < 16))
{
*n++ = *p++;
count++;
}
*n = '\0';
if (*p == '+')
{
NWFSPrint("nwfs: volume auto-repair enabled\n");
AutoRepair = TRUE;
}
volume = MountHandledVolume(name);
if (!volume)
{
NWFSPrint("nwfs: error mounting volume %s\n", name);
sb->s_dev = 0;
return NULL;
}
MOD_INC_USE_COUNT;
lock_super(sb);
sb->s_blocksize = LogicalBlockSize;
switch (sb->s_blocksize)
{
case 512:
sb->s_blocksize_bits = 9;
break;
case 1024:
sb->s_blocksize_bits = 10;
break;
case 2048:
sb->s_blocksize_bits = 11;
break;
case 4096:
sb->s_blocksize_bits = 12;
break;
}
sb->s_magic = _LINUX_FS_ID;
sb->s_dev = dev;
sb->s_op = &nwfs_sops;
sb->u.generic_sbp = (void *) volume;
unlock_super(sb);
sb->s_mounted = iget(sb, 0);
if (!sb->s_mounted)
{
NWFSPrint("nwfs: get root inode failed\n");
sb->s_dev = 0;
MOD_DEC_USE_COUNT;
return NULL;
}
sb->s_mounted->i_atime = sb->s_mounted->i_mtime = NWFSGetSystemTime();
sb->s_mounted->i_ctime = NWFSGetSystemTime();
return sb;
}
void nwfs_put_super(struct super_block *sb)
{
register VOLUME *volume;
register ULONG retCode;
lock_super(sb);
sb->s_dev = 0;
volume = (VOLUME *) sb->u.generic_sbp;
sb->u.generic_sbp = 0;
unlock_super(sb);
retCode = DismountVolumeByHandle(volume);
if (retCode)
NWFSPrint("nwfs: errors dismounting volume %s", volume->VolumeName);
MOD_DEC_USE_COUNT;
return;
}
void nwfs_statfs(struct super_block *sb, struct statfs *buf, int bufsiz)
{
register VOLUME *volume = (VOLUME *) sb->u.generic_sbp;
register ULONG bpb = (IO_BLOCK_SIZE / LogicalBlockSize);
struct statfs tmp;
tmp.f_type = _LINUX_FS_ID;
tmp.f_bsize = LogicalBlockSize;
tmp.f_blocks = volume->VolumeClusters * volume->BlocksPerCluster * bpb;
tmp.f_bfree = volume->VolumeFreeClusters * volume->BlocksPerCluster * bpb;
tmp.f_bavail = volume->VolumeFreeClusters * volume->BlocksPerCluster * bpb;
tmp.f_files = 0;
tmp.f_ffree = 0;
tmp.f_namelen = 255;
NWFSCopyToUserSpace(buf, &tmp, bufsiz);
}
int nwfs_register_symbols(void)
{
return 0;
}
#endif