/*
* Copyright (c) 2000 Silicon Graphics, Inc. All Rights Reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of version 2 of the GNU General Public License as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it would be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
*
* Further, this software is distributed without any warranty that it is
* free of the rightful claim of any third person regarding infringement
* or the like. Any license provided herein, whether implied or
* otherwise, applies only to this software file. Patent licenses, if
* any, provided herein do not apply to combinations of this program with
* other software, or any other product whatsoever.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write the Free Software Foundation, Inc., 59
* Temple Place - Suite 330, Boston MA 02111-1307, USA.
*
* Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
* Mountain View, CA 94043, or:
*
* http://www.sgi.com
*
* For further information regarding this notice, see:
*
* http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
*/
#include <xfs.h>
#include <linux/bitops.h>
#include <linux/locks.h>
#include <linux/smp_lock.h>
#include <linux/xfs_iops.h>
#include <linux/blkdev.h>
#include <linux/init.h>
#include <linux/page_buf.h>
/* xfs_vfs[ops].c */
extern void vfsinit(void);
extern int xfs_init(int fstype);
extern void xfs_cleanup(void);
#ifdef CONFIG_XFS_DMAPI
extern void dmapi_init(void);
extern void dmapi_uninit(void);
#endif
static struct super_operations linvfs_sops;
#define MS_DATA 0x04
#define MNTOPT_LOGBUFS "logbufs" /* number of XFS log buffers */
#define MNTOPT_LOGBSIZE "logbsize" /* size of XFS log buffers */
#define MNTOPT_LOGDEV "logdev" /* log device */
#define MNTOPT_RTDEV "rtdev" /* realtime I/O device */
#define MNTOPT_DMAPI "dmapi" /* DMI enabled (DMAPI / XDSM) */
#define MNTOPT_XDSM "xdsm" /* DMI enabled (DMAPI / XDSM) */
#define MNTOPT_BIOSIZE "biosize" /* log2 of preferred buffered io size */
#define MNTOPT_WSYNC "wsync" /* safe-mode nfs compatible mount */
#define MNTOPT_NOATIME "noatime" /* don't modify access times on reads */
#define MNTOPT_INO64 "ino64" /* force inodes into 64-bit range */
#define MNTOPT_NOALIGN "noalign" /* turn off stripe alignment */
#define MNTOPT_SUNIT "sunit" /* data volume stripe unit */
#define MNTOPT_SWIDTH "swidth" /* data volume stripe width */
#define MNTOPT_NORECOVERY "norecovery" /* don't run XFS recovery */
#define MNTOPT_OSYNCISDSYNC "osyncisdsync" /* o_sync == o_dsync on this fs */
#define MNTOPT_QUOTA "quota" /* disk quotas */
#define MNTOPT_MRQUOTA "mrquota" /* don't turnoff if SB has quotas on */
#define MNTOPT_NOSUID "nosuid" /* disallow setuid program execution */
#define MNTOPT_NOQUOTA "noquota" /* no quotas */
#define MNTOPT_UQUOTA "usrquota" /* user quota enabled */
#define MNTOPT_GQUOTA "grpquota" /* group quota enabled */
#define MNTOPT_UQUOTANOENF "uqnoenforce"/* user quota limit enforcement */
#define MNTOPT_GQUOTANOENF "gqnoenforce"/* group quota limit enforcement */
#define MNTOPT_QUOTANOENF "qnoenforce" /* same as uqnoenforce */
#define MNTOPT_RO "ro" /* read only */
#define MNTOPT_RW "rw" /* read/write */
STATIC int
mountargs_xfs(
char *options,
int flags,
struct xfs_args *args)
{
char *this_char, *value, *eov;
int logbufs = -1;
int logbufsize = -1;
int dsunit, dswidth, vol_dsunit, vol_dswidth;
int iosize;
int error;
iosize = dsunit = dswidth = vol_dsunit = vol_dswidth = 0;
memset(args, 0, sizeof(*args));
args->version = 3;
args->flags = flags & MS_RDONLY;
if (flags & MS_NOATIME)
args->flags |= XFSMNT_NOATIME;
for (this_char = strtok (options, ",");
this_char != NULL;
this_char = strtok (NULL, ",")) {
if ((value = strchr (this_char, '=')) != NULL)
*value++ = 0;
if (!strcmp(this_char, MNTOPT_LOGBUFS)) {
if (!strcmp(value, "none")) {
logbufs = 0;
printk(
"mount: this FS is trash after writing to it\n");
} else {
logbufs = simple_strtoul(value, &eov, 10);
if (logbufs < 2 || logbufs > 8) {
printk(
"mount: Illegal logbufs amount: %d\n",
logbufs);
return 1;
}
}
} else if (!strcmp(this_char, MNTOPT_LOGBSIZE)) {
logbufsize = simple_strtoul(value, &eov, 10);
if (logbufsize != 16*1024 && logbufsize != 32*1024) {
printk(
"mount: Illegal logbufsize: %d (not 16k or 32k)\n",
logbufsize);
return 1;
}
} else if (!strcmp(this_char, MNTOPT_LOGDEV)) {
struct nameidata nd;
if (!value)
continue;
error = 0;
lock_kernel();
if (path_init(value, LOOKUP_FOLLOW, &nd))
error = path_walk(value, &nd);
if (error) {
unlock_kernel();
printk(
"mount: Invalid log device \"%s\", error = %d\n",
value, error);
return 1;
}
args->logdev = nd.dentry->d_inode->i_rdev;
path_release(&nd);
unlock_kernel();
} else if (!strcmp(this_char, MNTOPT_DMAPI)) {
args->flags |= XFSMNT_DMAPI;
} else if (!strcmp(this_char, MNTOPT_XDSM)) {
args->flags |= XFSMNT_DMAPI;
} else if (!strcmp(this_char, MNTOPT_RTDEV)) {
struct nameidata nd;
if (!value)
continue;
error = 0;
lock_kernel();
if (path_init(value, LOOKUP_FOLLOW, &nd))
error = path_walk(value, &nd);
if (error) {
unlock_kernel();
printk(
"mount: Invalid realtime device \"%s\", error = %d\n",
value, error);
return 1;
}
args->rtdev = nd.dentry->d_inode->i_rdev;
path_release(&nd);
unlock_kernel();
} else if (!strcmp(this_char, MNTOPT_BIOSIZE)) {
iosize = simple_strtoul(value, &eov, 10);
if (iosize > 255 || iosize <= 0) {
printk(
"mount: illegal biosize %d, value out of bounds\n",
iosize);
return 1;
}
args->flags |= XFSMNT_IOSIZE;
args->iosizelog = (uint8_t) iosize;
} else if (!strcmp(this_char, MNTOPT_WSYNC)) {
args->flags |= XFSMNT_WSYNC;
} else if (!strcmp(this_char, MNTOPT_NOATIME)) {
args->flags |= XFSMNT_NOATIME;
} else if (!strcmp(this_char, MNTOPT_OSYNCISDSYNC)) {
args->flags |= XFSMNT_OSYNCISDSYNC;
} else if (!strcmp(this_char, MNTOPT_NORECOVERY)) {
args->flags |= XFSMNT_NORECOVERY;
} else if (!strcmp(this_char, MNTOPT_INO64)) {
#ifdef XFS_BIG_FILESYSTEMS
args->flags |= XFSMNT_INO64;
#else
printk("mount: ino64 option not allowed on this system\n");
return 1;
#endif
} else if (!strcmp(this_char, MNTOPT_UQUOTA)) {
args->flags |= XFSMNT_UQUOTA | XFSMNT_UQUOTAENF;
} else if (!strcmp(this_char, MNTOPT_QUOTA)) {
args->flags |= XFSMNT_UQUOTA | XFSMNT_UQUOTAENF;
} else if (!strcmp(this_char, MNTOPT_UQUOTANOENF)) {
args->flags |= XFSMNT_UQUOTA;
args->flags &= ~XFSMNT_UQUOTAENF;
} else if (!strcmp(this_char, MNTOPT_QUOTANOENF)) {
args->flags |= XFSMNT_UQUOTA;
args->flags &= ~XFSMNT_UQUOTAENF;
} else if (!strcmp(this_char, MNTOPT_MRQUOTA)) {
args->flags |= XFSMNT_QUOTAMAYBE;
} else if (!strcmp(this_char, MNTOPT_GQUOTA)) {
args->flags |= XFSMNT_GQUOTA | XFSMNT_GQUOTAENF;
} else if (!strcmp(this_char, MNTOPT_GQUOTANOENF)) {
args->flags |= XFSMNT_GQUOTA;
args->flags &= ~XFSMNT_GQUOTAENF;
} else if (!strcmp(this_char, MNTOPT_NOALIGN)) {
args->flags |= XFSMNT_NOALIGN;
} else if (!strcmp(this_char, MNTOPT_SUNIT)) {
dsunit = simple_strtoul(value, &eov, 10);
} else if (!strcmp(this_char, MNTOPT_SWIDTH)) {
dswidth = simple_strtoul(value, &eov, 10);
} else if (!strcmp(this_char, MNTOPT_RO)) {
args->flags |= MS_RDONLY;
} else if (!strcmp(this_char, MNTOPT_NOSUID)) {
args->flags |= MS_NOSUID;
} else {
printk(
"mount: unknown mount option \"%s\".\n", this_char);
return 1;
}
}
if (args->flags & XFSMNT_NORECOVERY) {
if ((args->flags & MS_RDONLY) == 0) {
printk(
"mount: no-recovery XFS mounts must be read-only.\n");
return 1;
}
}
if ((args->flags & XFSMNT_NOALIGN) && (dsunit || dswidth)) {
printk(
"mount: sunit and swidth options are incompatible with the noalign option\n");
return 1;
}
if ((dsunit && !dswidth) || (!dsunit && dswidth)) {
printk(
"mount: both sunit and swidth options have to be specified\n");
return 1;
}
if (dsunit && (dswidth % dsunit != 0)) {
printk(
"mount: stripe width (%d) has to be a multiple of the stripe unit (%d)\n",
dswidth, dsunit);
return 1;
}
if ((args->flags & XFSMNT_NOALIGN) != XFSMNT_NOALIGN) {
if (dsunit) {
args->sunit = dsunit;
args->flags |= XFSMNT_RETERR;
} else
args->sunit = vol_dsunit;
dswidth ? (args->swidth = dswidth) :
(args->swidth = vol_dswidth);
} else
args->sunit = args->swidth = 0;
args->logbufs = logbufs;
args->logbufsize = logbufsize;
return 0;
}
int
spectodevs(
struct super_block *sb,
struct xfs_args *args,
dev_t *ddevp,
dev_t *logdevp,
dev_t *rtdevp)
{
*ddevp = sb->s_dev;
if (args->logdev)
*logdevp = args->logdev;
else
*logdevp = *ddevp;
if (args->rtdev)
*rtdevp = args->rtdev;
else
*rtdevp = 0;
return 0;
}
void
linvfs_release_target(struct pb_target *target)
{
if (target) {
pagebuf_delwri_flush(target, PBDF_WAIT, NULL);
pagebuf_lock_disable(target);
}
}
struct super_block *
linvfs_read_super(
struct super_block *sb,
void *data,
int silent)
{
vfsops_t *vfsops;
extern vfsops_t xfs_vfsops;
vfs_t *vfsp;
vnode_t *cvp, *rootvp;
struct mounta ap;
struct mounta *uap = ≈
char spec[256];
struct xfs_args arg, *args = &arg;
int error;
statvfs_t statvfs;
struct inode *ip, *cip;
/* Setup the uap structure */
memset(uap, 0, sizeof(struct mounta));
sprintf(spec, bdevname(sb->s_dev));
uap->spec = spec;
uap->flags = MS_DATA;
if (mountargs_xfs((char *)data, sb->s_flags, args) != 0) {
return NULL;
}
args->fsname = uap->spec;
uap->dataptr = (char *)args;
uap->datalen = sizeof(*args);
/* Kludge in XFS until we have other VFS/VNODE FSs */
vfsops = &xfs_vfsops;
/* Set up the vfs_t structure */
vfsp = vfs_allocate();
if (sb->s_flags & MS_RDONLY)
vfsp->vfs_flag |= VFS_RDONLY;
/* Setup up the cvp structure */
cip = (struct inode *)kmem_alloc(sizeof(struct inode),0);
bzero(cip, sizeof(*cip));
atomic_set(&cip->i_count, 1);
cvp = LINVFS_GET_VN_ADDRESS(cip);
cvp->v_type = VDIR;
cvp->v_number = 1; /* Place holder */
cvp->v_inode = cip;
#ifdef CONFIG_XFS_VNODE_TRACING
cvp->v_trace = ktrace_alloc(VNODE_TRACE_SIZE, KM_SLEEP);
#endif /* CONFIG_XFS_VNODE_TRACING */
vn_trace_entry(cvp, "linvfs_read_super", (inst_t *)__return_address);
cvp->v_flag |= VMOUNTING;
vn_bhv_head_init(VN_BHV_HEAD(cvp), "vnode"); /* for DMAPI */
LINVFS_SET_CVP(sb, cvp);
vfsp->vfs_super = sb;
#ifdef CONFIG_FS_POSIX_ACL
sb->s_posix_acl_flag = 1;
#endif
sb->s_blocksize = 512;
sb->s_blocksize_bits = ffs(sb->s_blocksize) - 1;
set_blocksize(sb->s_dev, 512);
sb->s_op = &linvfs_sops;
sb->dq_op = NULL;
LINVFS_SET_VFS(sb, vfsp);
VFSOPS_MOUNT(vfsops, vfsp, cvp, uap, NULL, sys_cred, error);
if (error)
goto fail_vfsop;
VFS_STATVFS(vfsp, &statvfs, NULL, error);
if (error)
goto fail_unmount;
sb->s_magic = XFS_SB_MAGIC;
sb->s_dirt = 1; /* Make sure we get regular syncs */
/* For kernels which have the s_maxbytes field - set it */
#ifdef MAX_NON_LFS
sb->s_maxbytes = XFS_MAX_FILE_OFFSET;
#endif
VFS_ROOT(vfsp, &rootvp, error);
if (error)
goto fail_unmount;
ip = LINVFS_GET_IP(rootvp);
linvfs_set_inode_ops(ip);
linvfs_revalidate_core(ip, ATTR_COMM);
sb->s_root = d_alloc_root(ip);
if (!sb->s_root)
goto fail_vnrele;
if (is_bad_inode((struct inode *) sb->s_root))
goto fail_vnrele;
/* Don't set the VFS_DMI flag until here because we don't want
* to send events while replaying the log.
*/
if (args->flags & XFSMNT_DMAPI)
vfsp->vfs_flag |= VFS_DMI;
vn_trace_exit(rootvp, "linvfs_read_super", (inst_t *)__return_address);
return(sb);
fail_vnrele:
VN_RELE(rootvp);
fail_unmount:
VFS_UNMOUNT(vfsp, 0, sys_cred, error);
/* We need to do something here to shut down the
VNODE/VFS layer. */
fail_vfsop:
vfs_deallocate(vfsp);
#ifdef CONFIG_XFS_VNODE_TRACING
ktrace_free(cvp->v_trace);
cvp->v_trace = NULL;
#endif /* CONFIG_XFS_VNODE_TRACING */
kfree(cvp->v_inode);
return(NULL);
}
void
linvfs_set_inode_ops(
struct inode *inode)
{
vnode_t *vp;
vp = LINVFS_GET_VN_ADDRESS(inode);
inode->i_mode = VTTOIF(vp->v_type);
if (vp->v_type == VNON) {
make_bad_inode(inode);
} else if (S_ISREG(inode->i_mode)) {
inode->i_op = &linvfs_file_inode_operations;
inode->i_fop = &linvfs_file_operations;
inode->i_mapping->a_ops = &linvfs_aops;
} else if (S_ISDIR(inode->i_mode)) {
inode->i_op = &linvfs_dir_inode_operations;
inode->i_fop = &linvfs_dir_operations;
} else if (S_ISLNK(inode->i_mode)) {
inode->i_op = &linvfs_symlink_inode_operations;
if (inode->i_blocks)
inode->i_mapping->a_ops = &linvfs_aops;
} else {
inode->i_op = &linvfs_file_inode_operations;
init_special_inode(inode, inode->i_mode, inode->i_rdev);
}
}
void
linvfs_read_inode(
struct inode *inode)
{
vfs_t *vfsp = LINVFS_GET_VFS(inode->i_sb);
if (vfsp) {
vn_initialize(vfsp, inode, 1);
} else {
make_bad_inode(inode);
return;
}
inode->i_version = ++event;
}
/*
* The write method is only used to
* trace interesting events in the life of a vnode.
*/
#ifdef CONFIG_XFS_VNODE_TRACING
void
linvfs_write_inode(
struct inode *inode,
int sync)
{
vnode_t *vp = LINVFS_GET_VP(inode);
if (vp) {
vn_trace_entry(vp, "linvfs_write_inode",
(inst_t *)__return_address);
}
}
#endif /* CONFIG_XFS_VNODE_TRACING */
void
linvfs_delete_inode(
struct inode *inode)
{
vnode_t *vp = LINVFS_GET_VP(inode);
if (vp) {
vn_trace_entry(vp, "linvfs_delete_inode",
(inst_t *)__return_address);
/*
* Remove the vnode, the nlink count
* is zero & the unlink will complete.
*/
vp->v_flag |= VPURGE;
vn_remove(vp);
}
clear_inode(inode);
}
void
linvfs_clear_inode(
struct inode *inode)
{
vnode_t *vp = LINVFS_GET_VP(inode);
if (vp) {
vn_trace_entry(vp, "linvfs_clear_inode",
(inst_t *)__return_address);
/*
* Do all our cleanup, and remove
* this vnode.
*/
vp->v_flag |= VPURGE;
vn_remove(vp);
}
}
void
linvfs_put_inode(
struct inode *inode)
{
vnode_t *vp = LINVFS_GET_VP(inode);
if (vp) vn_put(vp);
}
void
linvfs_put_super(
struct super_block *sb)
{
int error;
int sector_size = 512;
kdev_t dev = sb->s_dev;
vfs_t *vfsp = LINVFS_GET_VFS(sb);
vnode_t *cvp;
VFS_DOUNMOUNT(vfsp, 0, NULL, sys_cred, error);
if (error) {
printk("XFS unmount got error %d\n", error);
printk("linvfs_put_super: vfsp/0x%p left dangling!\n", vfsp);
return;
}
vfs_deallocate(vfsp);
cvp = LINVFS_GET_CVP(sb);
#ifdef CONFIG_XFS_VNODE_TRACING
ktrace_free(cvp->v_trace);
cvp->v_trace = NULL;
#endif /* CONFIG_XFS_VNODE_TRACING */
kfree(cvp->v_inode);
/* Do something to get rid of the VNODE/VFS layer here */
/* Reset device block size */
if (hardsect_size[MAJOR(dev)])
sector_size = hardsect_size[MAJOR(dev)][MINOR(dev)];
set_blocksize(dev, sector_size);
}
void
linvfs_write_super(
struct super_block *sb)
{
vfs_t *vfsp = LINVFS_GET_VFS(sb);
int error;
if (sb->s_flags & MS_RDONLY) {
return;
}
VFS_SYNC(vfsp, SYNC_FSDATA|SYNC_BDFLUSH|SYNC_NOWAIT|SYNC_ATTR,
sys_cred, error);
sb->s_dirt = 1; /* Keep the syncs coming. */
}
int
linvfs_statfs(
struct super_block *sb,
struct statfs *buf)
{
vfs_t *vfsp = LINVFS_GET_VFS(sb);
statvfs_t stat;
int error;
VFS_STATVFS(vfsp, &stat, NULL, error);
if (error){
return(-error);
}
buf->f_type = XFS_SB_MAGIC;
buf->f_bsize = stat.f_bsize;
buf->f_blocks = stat.f_blocks;
buf->f_bfree = stat.f_bfree;
buf->f_bavail = stat.f_bavail;
buf->f_files = stat.f_files;
buf->f_ffree = stat.f_ffree;
buf->f_fsid.val[0] = stat.f_fsid;
buf->f_fsid.val[1] = 0;
buf->f_namelen = stat.f_namemax;
return 0;
}
int
linvfs_remount(
struct super_block *sb,
int *flags,
char *options)
{
struct xfs_args args;
vfs_t *vfsp;
vnode_t *cvp;
vfsp = LINVFS_GET_VFS(sb);
cvp = LINVFS_GET_CVP(sb);
#ifdef CONFIG_FS_POSIX_ACL
sb->s_posix_acl_flag = 1;
#endif
if ((*flags & MS_RDONLY) == (sb->s_flags & MS_RDONLY))
return 0;
if (mountargs_xfs(options, *flags, &args) != 0)
return -ENOSPC;
if (*flags & MS_RDONLY || args.flags & MS_RDONLY) {
int error;
int save = sb->s_flags;
xfs_mount_t *mp = XFS_BHVTOM(vfsp->vfs_fbhv);
sb->s_flags |= MS_RDONLY;
XFS_bflush(mp->m_ddev_targ);
VFS_SYNC(vfsp, SYNC_ATTR|SYNC_WAIT|SYNC_CLOSE,
sys_cred, error);
if (error) {
sb->s_flags=save;
return -error;
}
XFS_log_write_unmount_ro(vfsp->vfs_fbhv);
vfsp->vfs_flag |= VFS_RDONLY;
} else {
vfsp->vfs_flag &= ~VFS_RDONLY;
sb->s_flags &= ~MS_RDONLY;
}
return 0;
}
void
linvfs_freeze_fs(
struct super_block *sb)
{
vfs_t *vfsp;
vnode_t *vp;
int error;
vfsp = LINVFS_GET_VFS(sb);
if (sb->s_flags & MS_RDONLY) {
return;
}
VFS_ROOT(vfsp, &vp, error);
VOP_IOCTL(vp, LINVFS_GET_IP(vp), NULL, XFS_IOC_FREEZE, 0, error);
VN_RELE(vp);
}
void
linvfs_unfreeze_fs(
struct super_block *sb)
{
vfs_t *vfsp;
vnode_t *vp;
int error;
vfsp = LINVFS_GET_VFS(sb);
VFS_ROOT(vfsp, &vp, error);
VOP_IOCTL(vp, LINVFS_GET_IP(vp), NULL, XFS_IOC_THAW, 0, error);
}
int
linvfs_dmapi_mount(
struct super_block *sb,
char *dir_name)
{
vfsops_t *vfsops;
extern vfsops_t xfs_vfsops;
char fsname[256];
vnode_t *cvp; /* covered vnode */
vfs_t *vfsp; /* mounted vfs */
int error;
vfsp = LINVFS_GET_VFS(sb);
if ( ! (vfsp->vfs_flag & VFS_DMI) )
return 0;
cvp = LINVFS_GET_CVP(sb);
sprintf(fsname, bdevname(sb->s_dev));
/* Kludge in XFS until we have other VFS/VNODE FSs */
vfsops = &xfs_vfsops;
VFSOPS_DMAPI_MOUNT(vfsops, vfsp, cvp, dir_name, fsname, error);
if (error) {
vfsp->vfs_flag &= ~VFS_DMI;
return -error;
}
return 0;
}
int
linvfs_quotactl(
struct super_block *sb,
int cmd,
int type,
int id,
caddr_t addr)
{
xfs_mount_t *mp;
vfs_t *vfsp;
int error;
if (!IS_XQM_CMD(cmd))
return -EINVAL;
if (type == USRQUOTA)
type = XFS_DQ_USER;
else if (type == GRPQUOTA)
type = XFS_DQ_GROUP;
else
return -EINVAL;
vfsp = LINVFS_GET_VFS(sb);
mp = XFS_BHVTOM(vfsp->vfs_fbhv);
ASSERT(mp);
error = xfs_quotactl(mp, vfsp, cmd, id, type, addr);
if (error)
return -error;
return 0;
}
static struct super_operations linvfs_sops = {
read_inode: linvfs_read_inode,
#ifdef CONFIG_XFS_VNODE_TRACING
write_inode: linvfs_write_inode,
#endif
#ifdef CONFIG_XFS_DMAPI
dmapi_mount_event: linvfs_dmapi_mount,
#endif
#ifdef CONFIG_XFS_QUOTA
quotactl: linvfs_quotactl,
#endif
put_inode: linvfs_put_inode,
delete_inode: linvfs_delete_inode,
clear_inode: linvfs_clear_inode,
put_super: linvfs_put_super,
write_super: linvfs_write_super,
write_super_lockfs: linvfs_freeze_fs,
unlockfs: linvfs_unfreeze_fs,
statfs: linvfs_statfs,
remount_fs: linvfs_remount
};
DECLARE_FSTYPE_DEV(xfs_fs_type, XFS_NAME, linvfs_read_super);
static int __init init_xfs_fs(void)
{
struct sysinfo si;
si_meminfo(&si);
physmem = si.totalram;
cred_init();
vfsinit();
xfs_init(0);
#ifdef CONFIG_XFS_GRIO
xfs_grio_init();
#endif
#ifdef CONFIG_XFS_DMAPI
dmapi_init();
#endif
printk(KERN_INFO
"XFS filesystem Copyright (c) 2001 Silicon Graphics, Inc.\n");
return register_filesystem(&xfs_fs_type);
}
static void __exit exit_xfs_fs(void)
{
#ifdef CONFIG_XFS_DMAPI
dmapi_uninit();
#endif
#ifdef CONFIG_XFS_GRIO
xfs_grio_uninit();
#endif
xfs_cleanup();
unregister_filesystem(&xfs_fs_type);
}
EXPORT_NO_SYMBOLS;
module_init(init_xfs_fs);
module_exit(exit_xfs_fs);
![[BACK]](/icons/back.gif){kind=icon}
Return to xfs_super.c CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [Development] / xfs-linux / linux-2.4