2 * Copyright (c) 2000-2004 Silicon Graphics, Inc. All Rights Reserved.
4 * This program is free software; you can redistribute it and/or modify it
5 * under the terms of version 2 of the GNU General Public License as
6 * published by the Free Software Foundation.
8 * This program is distributed in the hope that it would be useful, but
9 * WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
12 * Further, this software is distributed without any warranty that it is
13 * free of the rightful claim of any third person regarding infringement
14 * or the like. Any license provided herein, whether implied or
15 * otherwise, applies only to this software file. Patent licenses, if
16 * any, provided herein do not apply to combinations of this program with
17 * other software, or any other product whatsoever.
19 * You should have received a copy of the GNU General Public License along
20 * with this program; if not, write the Free Software Foundation, Inc., 59
21 * Temple Place - Suite 330, Boston MA 02111-1307, USA.
23 * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
24 * Mountain View, CA 94043, or:
28 * For further information regarding this notice, see:
30 * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
38 #include "xfs_trans.h"
42 #include "xfs_alloc.h"
43 #include "xfs_dmapi.h"
44 #include "xfs_quota.h"
45 #include "xfs_mount.h"
46 #include "xfs_alloc_btree.h"
47 #include "xfs_bmap_btree.h"
48 #include "xfs_ialloc_btree.h"
49 #include "xfs_btree.h"
50 #include "xfs_ialloc.h"
51 #include "xfs_attr_sf.h"
52 #include "xfs_dir_sf.h"
53 #include "xfs_dir2_sf.h"
54 #include "xfs_dinode.h"
55 #include "xfs_inode.h"
58 #include "xfs_rtalloc.h"
59 #include "xfs_error.h"
60 #include "xfs_itable.h"
66 #include "xfs_buf_item.h"
67 #include "xfs_utils.h"
68 #include "xfs_version.h"
70 #include <linux/namei.h>
71 #include <linux/init.h>
72 #include <linux/mount.h>
73 #include <linux/suspend.h>
75 STATIC struct quotactl_ops linvfs_qops;
76 STATIC struct super_operations linvfs_sops;
77 STATIC struct export_operations linvfs_export_ops;
78 STATIC kmem_cache_t * linvfs_inode_cachep;
80 STATIC struct xfs_mount_args *
82 struct super_block *sb)
84 struct xfs_mount_args *args;
86 args = kmem_zalloc(sizeof(struct xfs_mount_args), KM_SLEEP);
87 args->logbufs = args->logbufsize = -1;
88 strncpy(args->fsname, sb->s_id, MAXNAMELEN);
90 /* Copy the already-parsed mount(2) flags we're interested in */
91 if (sb->s_flags & MS_NOATIME)
92 args->flags |= XFSMNT_NOATIME;
94 /* Default to 32 bit inodes on Linux all the time */
95 args->flags |= XFSMNT_32BITINODES;
102 unsigned int blockshift)
104 unsigned int pagefactor = 1;
105 unsigned int bitshift = BITS_PER_LONG - 1;
107 /* Figure out maximum filesize, on Linux this can depend on
108 * the filesystem blocksize (on 32 bit platforms).
109 * __block_prepare_write does this in an [unsigned] long...
110 * page->index << (PAGE_CACHE_SHIFT - bbits)
111 * So, for page sized blocks (4K on 32 bit platforms),
112 * this wraps at around 8Tb (hence MAX_LFS_FILESIZE which is
113 * (((u64)PAGE_CACHE_SIZE << (BITS_PER_LONG-1))-1)
114 * but for smaller blocksizes it is less (bbits = log2 bsize).
115 * Note1: get_block_t takes a long (implicit cast from above)
116 * Note2: The Large Block Device (LBD and HAVE_SECTOR_T) patch
117 * can optionally convert the [unsigned] long from above into
118 * an [unsigned] long long.
121 #if BITS_PER_LONG == 32
122 # if defined(CONFIG_LBD)
123 ASSERT(sizeof(sector_t) == 8);
124 pagefactor = PAGE_CACHE_SIZE;
125 bitshift = BITS_PER_LONG;
127 pagefactor = PAGE_CACHE_SIZE >> (PAGE_CACHE_SHIFT - blockshift);
131 return (((__uint64_t)pagefactor) << bitshift) - 1;
134 STATIC __inline__ void
138 vnode_t *vp = LINVFS_GET_VP(inode);
140 if (vp->v_type == VNON) {
141 make_bad_inode(inode);
142 } else if (S_ISREG(inode->i_mode)) {
143 inode->i_op = &linvfs_file_inode_operations;
144 inode->i_fop = &linvfs_file_operations;
145 inode->i_mapping->a_ops = &linvfs_aops;
146 } else if (S_ISDIR(inode->i_mode)) {
147 inode->i_op = &linvfs_dir_inode_operations;
148 inode->i_fop = &linvfs_dir_operations;
149 } else if (S_ISLNK(inode->i_mode)) {
150 inode->i_op = &linvfs_symlink_inode_operations;
152 inode->i_mapping->a_ops = &linvfs_aops;
154 inode->i_op = &linvfs_file_inode_operations;
155 init_special_inode(inode, inode->i_mode, inode->i_rdev);
159 STATIC __inline__ void
160 xfs_revalidate_inode(
165 struct inode *inode = LINVFS_GET_IP(vp);
167 inode->i_mode = (ip->i_d.di_mode & MODEMASK) | VTTOIF(vp->v_type);
168 inode->i_nlink = ip->i_d.di_nlink;
169 inode->i_uid = ip->i_d.di_uid;
170 inode->i_gid = ip->i_d.di_gid;
171 if (((1 << vp->v_type) & ((1<<VBLK) | (1<<VCHR))) == 0) {
174 xfs_dev_t dev = ip->i_df.if_u2.if_rdev;
175 inode->i_rdev = MKDEV(sysv_major(dev) & 0x1ff, sysv_minor(dev));
177 inode->i_blksize = PAGE_CACHE_SIZE;
178 inode->i_generation = ip->i_d.di_gen;
179 i_size_write(inode, ip->i_d.di_size);
181 XFS_FSB_TO_BB(mp, ip->i_d.di_nblocks + ip->i_delayed_blks);
182 inode->i_atime.tv_sec = ip->i_d.di_atime.t_sec;
183 inode->i_atime.tv_nsec = ip->i_d.di_atime.t_nsec;
184 inode->i_mtime.tv_sec = ip->i_d.di_mtime.t_sec;
185 inode->i_mtime.tv_nsec = ip->i_d.di_mtime.t_nsec;
186 inode->i_ctime.tv_sec = ip->i_d.di_ctime.t_sec;
187 inode->i_ctime.tv_nsec = ip->i_d.di_ctime.t_nsec;
188 if (ip->i_d.di_flags & XFS_DIFLAG_IMMUTABLE)
189 inode->i_flags |= S_IMMUTABLE;
191 inode->i_flags &= ~S_IMMUTABLE;
192 if (ip->i_d.di_flags & XFS_DIFLAG_IUNLINK)
193 inode->i_flags |= S_IUNLINK;
195 inode->i_flags &= ~S_IUNLINK;
196 if (ip->i_d.di_flags & XFS_DIFLAG_BARRIER)
197 inode->i_flags |= S_BARRIER;
199 inode->i_flags &= ~S_BARRIER;
200 if (ip->i_d.di_flags & XFS_DIFLAG_APPEND)
201 inode->i_flags |= S_APPEND;
203 inode->i_flags &= ~S_APPEND;
204 if (ip->i_d.di_flags & XFS_DIFLAG_SYNC)
205 inode->i_flags |= S_SYNC;
207 inode->i_flags &= ~S_SYNC;
208 if (ip->i_d.di_flags & XFS_DIFLAG_NOATIME)
209 inode->i_flags |= S_NOATIME;
211 inode->i_flags &= ~S_NOATIME;
212 vp->v_flag &= ~VMODIFIED;
216 xfs_initialize_vnode(
219 bhv_desc_t *inode_bhv,
222 xfs_inode_t *ip = XFS_BHVTOI(inode_bhv);
223 struct inode *inode = LINVFS_GET_IP(vp);
225 if (!inode_bhv->bd_vobj) {
226 vp->v_vfsp = bhvtovfs(bdp);
227 bhv_desc_init(inode_bhv, ip, vp, &xfs_vnodeops);
228 bhv_insert(VN_BHV_HEAD(vp), inode_bhv);
231 vp->v_type = IFTOVT(ip->i_d.di_mode);
233 /* Have we been called during the new inode create process,
234 * in which case we are too early to fill in the Linux inode.
236 if (vp->v_type == VNON)
239 xfs_revalidate_inode(XFS_BHVTOM(bdp), vp, ip);
241 /* For new inodes we need to set the ops vectors,
242 * and unlock the inode.
244 if (unlock && (inode->i_state & I_NEW)) {
245 xfs_set_inodeops(inode);
246 unlock_new_inode(inode);
254 struct inode *inode = LINVFS_GET_IP(XFS_ITOV(ip));
256 filemap_flush(inode->i_mapping);
263 sync_blockdev(XFS_ITOV(ip)->v_vfsp->vfs_super->s_bdev);
264 xfs_log_force(ip->i_mount, (xfs_lsn_t)0, XFS_LOG_FORCE|XFS_LOG_SYNC);
271 struct block_device **bdevp)
275 *bdevp = open_bdev_excl(name, 0, mp);
276 if (IS_ERR(*bdevp)) {
277 error = PTR_ERR(*bdevp);
278 printk("XFS: Invalid device [%s], error=%d\n", name, error);
286 struct block_device *bdev)
289 close_bdev_excl(bdev);
293 STATIC struct inode *
295 struct super_block *sb)
299 vp = (vnode_t *)kmem_cache_alloc(linvfs_inode_cachep,
300 kmem_flags_convert(KM_SLEEP));
303 return LINVFS_GET_IP(vp);
307 linvfs_destroy_inode(
310 kmem_cache_free(linvfs_inode_cachep, LINVFS_GET_VP(inode));
316 kmem_cache_t *cachep,
319 vnode_t *vp = (vnode_t *)data;
321 if ((flags & (SLAB_CTOR_VERIFY|SLAB_CTOR_CONSTRUCTOR)) ==
322 SLAB_CTOR_CONSTRUCTOR)
323 inode_init_once(LINVFS_GET_IP(vp));
327 init_inodecache( void )
329 linvfs_inode_cachep = kmem_cache_create("linvfs_icache",
331 SLAB_HWCACHE_ALIGN|SLAB_RECLAIM_ACCOUNT,
334 if (linvfs_inode_cachep == NULL)
340 destroy_inodecache( void )
342 if (kmem_cache_destroy(linvfs_inode_cachep))
343 printk(KERN_WARNING "%s: cache still in use!\n", __FUNCTION__);
347 * Attempt to flush the inode, this will actually fail
348 * if the inode is pinned, but we dirty the inode again
349 * at the point when it is unpinned after a log write,
350 * since this is when the inode itself becomes flushable.
357 vnode_t *vp = LINVFS_GET_VP(inode);
358 int error, flags = FLUSH_INODE;
361 vn_trace_entry(vp, __FUNCTION__, (inst_t *)__return_address);
364 VOP_IFLUSH(vp, flags, error);
372 vnode_t *vp = LINVFS_GET_VP(inode);
376 vn_trace_entry(vp, __FUNCTION__, (inst_t *)__return_address);
378 * Do all our cleanup, and remove this vnode.
385 #define SYNCD_FLAGS (SYNC_FSDATA|SYNC_BDFLUSH|SYNC_ATTR)
391 vfs_t *vfsp = (vfs_t *) arg;
394 daemonize("xfssyncd");
396 vfsp->vfs_sync_task = current;
398 wake_up(&vfsp->vfs_wait_sync_task);
401 set_current_state(TASK_INTERRUPTIBLE);
402 schedule_timeout(xfs_syncd_interval);
404 if (current->flags & PF_FREEZE)
405 refrigerator(PF_FREEZE);
406 if (vfsp->vfs_flag & VFS_UMOUNT)
408 if (vfsp->vfs_flag & VFS_RDONLY)
410 VFS_SYNC(vfsp, SYNCD_FLAGS, NULL, error);
413 vfsp->vfs_sync_task = NULL;
415 wake_up(&vfsp->vfs_wait_sync_task);
426 pid = kernel_thread(xfssyncd, (void *) vfsp,
427 CLONE_VM | CLONE_FS | CLONE_FILES);
430 wait_event(vfsp->vfs_wait_sync_task, vfsp->vfs_sync_task);
438 vfsp->vfs_flag |= VFS_UMOUNT;
441 wake_up_process(vfsp->vfs_sync_task);
442 wait_event(vfsp->vfs_wait_sync_task, !vfsp->vfs_sync_task);
447 struct super_block *sb)
449 vfs_t *vfsp = LINVFS_GET_VFS(sb);
452 linvfs_stop_syncd(vfsp);
453 VFS_SYNC(vfsp, SYNC_ATTR|SYNC_DELWRI, NULL, error);
455 VFS_UNMOUNT(vfsp, 0, NULL, error);
457 printk("XFS unmount got error %d\n", error);
458 printk("%s: vfsp/0x%p left dangling!\n", __FUNCTION__, vfsp);
462 vfs_deallocate(vfsp);
467 struct super_block *sb)
469 vfs_t *vfsp = LINVFS_GET_VFS(sb);
472 if (sb->s_flags & MS_RDONLY) {
473 sb->s_dirt = 0; /* paranoia */
476 /* Push the log and superblock a little */
477 VFS_SYNC(vfsp, SYNC_FSDATA, NULL, error);
483 struct super_block *sb,
486 vfs_t *vfsp = LINVFS_GET_VFS(sb);
488 int flags = SYNC_FSDATA;
493 VFS_SYNC(vfsp, flags, NULL, error);
501 struct super_block *sb,
502 struct kstatfs *statp)
504 vfs_t *vfsp = LINVFS_GET_VFS(sb);
507 VFS_STATVFS(vfsp, statp, NULL, error);
513 struct super_block *sb,
517 vfs_t *vfsp = LINVFS_GET_VFS(sb);
518 struct xfs_mount_args *args = xfs_args_allocate(sb);
521 VFS_PARSEARGS(vfsp, options, args, 1, error);
523 VFS_MNTUPDATE(vfsp, flags, args, error);
524 kmem_free(args, sizeof(*args));
530 struct super_block *sb)
532 VFS_FREEZE(LINVFS_GET_VFS(sb));
535 STATIC struct dentry *
537 struct dentry *child)
541 struct dentry *parent;
542 struct inode *ip = NULL;
543 struct dentry dotdot;
545 dotdot.d_name.name = "..";
546 dotdot.d_name.len = 2;
550 vp = LINVFS_GET_VP(child->d_inode);
551 VOP_LOOKUP(vp, &dotdot, &cvp, 0, NULL, NULL, error);
555 ip = LINVFS_GET_IP(cvp);
558 return ERR_PTR(-EACCES);
562 return ERR_PTR(-error);
563 parent = d_alloc_anon(ip);
566 parent = ERR_PTR(-ENOMEM);
571 STATIC struct dentry *
573 struct super_block *sb,
578 struct dentry *result;
580 vfs_t *vfsp = LINVFS_GET_VFS(sb);
583 xfid.fid_len = sizeof(xfs_fid2_t) - sizeof(xfid.fid_len);
585 xfid.fid_gen = ((__u32 *)data)[1];
586 xfid.fid_ino = ((__u32 *)data)[0];
588 VFS_VGET(vfsp, &vp, (fid_t *)&xfid, error);
589 if (error || vp == NULL)
590 return ERR_PTR(-ESTALE) ;
592 inode = LINVFS_GET_IP(vp);
593 result = d_alloc_anon(inode);
596 return ERR_PTR(-ENOMEM);
604 struct vfsmount *mnt)
606 struct vfs *vfsp = LINVFS_GET_VFS(mnt->mnt_sb);
609 VFS_SHOWARGS(vfsp, m, error);
615 struct super_block *sb,
616 struct fs_quota_stat *fqs)
618 struct vfs *vfsp = LINVFS_GET_VFS(sb);
621 VFS_QUOTACTL(vfsp, Q_XGETQSTAT, 0, (caddr_t)fqs, error);
627 struct super_block *sb,
631 struct vfs *vfsp = LINVFS_GET_VFS(sb);
634 VFS_QUOTACTL(vfsp, op, 0, (caddr_t)&flags, error);
640 struct super_block *sb,
643 struct fs_disk_quota *fdq)
645 struct vfs *vfsp = LINVFS_GET_VFS(sb);
648 getmode = (type == GRPQUOTA) ? Q_XGETGQUOTA : Q_XGETQUOTA;
649 VFS_QUOTACTL(vfsp, getmode, id, (caddr_t)fdq, error);
655 struct super_block *sb,
658 struct fs_disk_quota *fdq)
660 struct vfs *vfsp = LINVFS_GET_VFS(sb);
663 setmode = (type == GRPQUOTA) ? Q_XSETGQLIM : Q_XSETQLIM;
664 VFS_QUOTACTL(vfsp, setmode, id, (caddr_t)fdq, error);
670 struct super_block *sb,
675 struct vfs *vfsp = vfs_allocate();
676 struct xfs_mount_args *args = xfs_args_allocate(sb);
677 struct kstatfs statvfs;
680 vfsp->vfs_super = sb;
681 LINVFS_SET_VFS(sb, vfsp);
682 if (sb->s_flags & MS_RDONLY)
683 vfsp->vfs_flag |= VFS_RDONLY;
684 bhv_insert_all_vfsops(vfsp);
686 VFS_PARSEARGS(vfsp, (char *)data, args, 0, error);
688 bhv_remove_all_vfsops(vfsp, 1);
692 sb_min_blocksize(sb, BBSIZE);
693 sb->s_export_op = &linvfs_export_ops;
694 sb->s_qcop = &linvfs_qops;
695 sb->s_op = &linvfs_sops;
697 VFS_MOUNT(vfsp, args, NULL, error);
699 bhv_remove_all_vfsops(vfsp, 1);
703 VFS_STATVFS(vfsp, &statvfs, NULL, error);
708 sb->s_magic = statvfs.f_type;
709 sb->s_blocksize = statvfs.f_bsize;
710 sb->s_blocksize_bits = ffs(statvfs.f_bsize) - 1;
711 sb->s_maxbytes = xfs_max_file_offset(sb->s_blocksize_bits);
712 set_posix_acl_flag(sb);
714 VFS_ROOT(vfsp, &rootvp, error);
718 sb->s_root = d_alloc_root(LINVFS_GET_IP(rootvp));
723 if (is_bad_inode(sb->s_root->d_inode)) {
727 if ((error = linvfs_start_syncd(vfsp)))
729 vn_trace_exit(rootvp, __FUNCTION__, (inst_t *)__return_address);
731 kmem_free(args, sizeof(*args));
743 VFS_UNMOUNT(vfsp, 0, NULL, error2);
746 vfs_deallocate(vfsp);
747 kmem_free(args, sizeof(*args));
751 STATIC struct super_block *
753 struct file_system_type *fs_type,
755 const char *dev_name,
758 return get_sb_bdev(fs_type, flags, dev_name, data, linvfs_fill_super);
762 STATIC struct export_operations linvfs_export_ops = {
763 .get_parent = linvfs_get_parent,
764 .get_dentry = linvfs_get_dentry,
767 STATIC struct super_operations linvfs_sops = {
768 .alloc_inode = linvfs_alloc_inode,
769 .destroy_inode = linvfs_destroy_inode,
770 .write_inode = linvfs_write_inode,
771 .clear_inode = linvfs_clear_inode,
772 .put_super = linvfs_put_super,
773 .write_super = linvfs_write_super,
774 .sync_fs = linvfs_sync_super,
775 .write_super_lockfs = linvfs_freeze_fs,
776 .statfs = linvfs_statfs,
777 .remount_fs = linvfs_remount,
778 .show_options = linvfs_show_options,
781 STATIC struct quotactl_ops linvfs_qops = {
782 .get_xstate = linvfs_getxstate,
783 .set_xstate = linvfs_setxstate,
784 .get_xquota = linvfs_getxquota,
785 .set_xquota = linvfs_setxquota,
788 STATIC struct file_system_type xfs_fs_type = {
789 .owner = THIS_MODULE,
791 .get_sb = linvfs_get_sb,
792 .kill_sb = kill_block_super,
793 .fs_flags = FS_REQUIRES_DEV,
802 static char message[] __initdata = KERN_INFO \
803 XFS_VERSION_STRING " with " XFS_BUILD_OPTIONS " enabled\n";
808 xfs_physmem = si.totalram;
812 error = init_inodecache();
814 goto undo_inodecache;
816 error = pagebuf_init();
826 error = register_filesystem(&xfs_fs_type);
835 destroy_inodecache();
846 unregister_filesystem(&xfs_fs_type);
849 destroy_inodecache();
853 module_init(init_xfs_fs);
854 module_exit(exit_xfs_fs);
856 MODULE_AUTHOR("Silicon Graphics, Inc.");
857 MODULE_DESCRIPTION(XFS_VERSION_STRING " with " XFS_BUILD_OPTIONS " enabled");
858 MODULE_LICENSE("GPL");