| /* |
| * Copyright (c) 2000-2005 Silicon Graphics, Inc. |
| * All Rights Reserved. |
| * |
| * 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. |
| * |
| * 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. 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 the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| #include "xfs.h" |
| #include "xfs_fs.h" |
| #include "xfs_bit.h" |
| #include "xfs_log.h" |
| #include "xfs_inum.h" |
| #include "xfs_trans.h" |
| #include "xfs_sb.h" |
| #include "xfs_ag.h" |
| #include "xfs_dir2.h" |
| #include "xfs_alloc.h" |
| #include "xfs_dmapi.h" |
| #include "xfs_quota.h" |
| #include "xfs_mount.h" |
| #include "xfs_bmap_btree.h" |
| #include "xfs_alloc_btree.h" |
| #include "xfs_ialloc_btree.h" |
| #include "xfs_dir2_sf.h" |
| #include "xfs_attr_sf.h" |
| #include "xfs_dinode.h" |
| #include "xfs_inode.h" |
| #include "xfs_bmap.h" |
| #include "xfs_btree.h" |
| #include "xfs_ialloc.h" |
| #include "xfs_rtalloc.h" |
| #include "xfs_error.h" |
| #include "xfs_itable.h" |
| #include "xfs_rw.h" |
| #include "xfs_acl.h" |
| #include "xfs_attr.h" |
| #include "xfs_buf_item.h" |
| #include "xfs_utils.h" |
| #include "xfs_vnodeops.h" |
| |
| #include <linux/capability.h> |
| #include <linux/xattr.h> |
| #include <linux/namei.h> |
| #include <linux/security.h> |
| #include <linux/falloc.h> |
| #include <linux/fiemap.h> |
| |
| /* |
| * Bring the atime in the XFS inode uptodate. |
| * Used before logging the inode to disk or when the Linux inode goes away. |
| */ |
| void |
| xfs_synchronize_atime( |
| xfs_inode_t *ip) |
| { |
| struct inode *inode = VFS_I(ip); |
| |
| if (!(inode->i_state & I_CLEAR)) { |
| ip->i_d.di_atime.t_sec = (__int32_t)inode->i_atime.tv_sec; |
| ip->i_d.di_atime.t_nsec = (__int32_t)inode->i_atime.tv_nsec; |
| } |
| } |
| |
| /* |
| * If the linux inode is valid, mark it dirty. |
| * Used when commiting a dirty inode into a transaction so that |
| * the inode will get written back by the linux code |
| */ |
| void |
| xfs_mark_inode_dirty_sync( |
| xfs_inode_t *ip) |
| { |
| struct inode *inode = VFS_I(ip); |
| |
| if (!(inode->i_state & (I_WILL_FREE|I_FREEING|I_CLEAR))) |
| mark_inode_dirty_sync(inode); |
| } |
| |
| /* |
| * Change the requested timestamp in the given inode. |
| * We don't lock across timestamp updates, and we don't log them but |
| * we do record the fact that there is dirty information in core. |
| */ |
| void |
| xfs_ichgtime( |
| xfs_inode_t *ip, |
| int flags) |
| { |
| struct inode *inode = VFS_I(ip); |
| timespec_t tv; |
| int sync_it = 0; |
| |
| tv = current_fs_time(inode->i_sb); |
| |
| if ((flags & XFS_ICHGTIME_MOD) && |
| !timespec_equal(&inode->i_mtime, &tv)) { |
| inode->i_mtime = tv; |
| ip->i_d.di_mtime.t_sec = (__int32_t)tv.tv_sec; |
| ip->i_d.di_mtime.t_nsec = (__int32_t)tv.tv_nsec; |
| sync_it = 1; |
| } |
| if ((flags & XFS_ICHGTIME_CHG) && |
| !timespec_equal(&inode->i_ctime, &tv)) { |
| inode->i_ctime = tv; |
| ip->i_d.di_ctime.t_sec = (__int32_t)tv.tv_sec; |
| ip->i_d.di_ctime.t_nsec = (__int32_t)tv.tv_nsec; |
| sync_it = 1; |
| } |
| |
| /* |
| * We update the i_update_core field _after_ changing |
| * the timestamps in order to coordinate properly with |
| * xfs_iflush() so that we don't lose timestamp updates. |
| * This keeps us from having to hold the inode lock |
| * while doing this. We use the SYNCHRONIZE macro to |
| * ensure that the compiler does not reorder the update |
| * of i_update_core above the timestamp updates above. |
| */ |
| if (sync_it) { |
| SYNCHRONIZE(); |
| ip->i_update_core = 1; |
| xfs_mark_inode_dirty_sync(ip); |
| } |
| } |
| |
| /* |
| * Hook in SELinux. This is not quite correct yet, what we really need |
| * here (as we do for default ACLs) is a mechanism by which creation of |
| * these attrs can be journalled at inode creation time (along with the |
| * inode, of course, such that log replay can't cause these to be lost). |
| */ |
| STATIC int |
| xfs_init_security( |
| struct inode *inode, |
| struct inode *dir) |
| { |
| struct xfs_inode *ip = XFS_I(inode); |
| size_t length; |
| void *value; |
| char *name; |
| int error; |
| |
| error = security_inode_init_security(inode, dir, &name, |
| &value, &length); |
| if (error) { |
| if (error == -EOPNOTSUPP) |
| return 0; |
| return -error; |
| } |
| |
| error = xfs_attr_set(ip, name, value, length, ATTR_SECURE); |
| |
| kfree(name); |
| kfree(value); |
| return error; |
| } |
| |
| static void |
| xfs_dentry_to_name( |
| struct xfs_name *namep, |
| struct dentry *dentry) |
| { |
| namep->name = dentry->d_name.name; |
| namep->len = dentry->d_name.len; |
| } |
| |
| STATIC void |
| xfs_cleanup_inode( |
| struct inode *dir, |
| struct inode *inode, |
| struct dentry *dentry) |
| { |
| struct xfs_name teardown; |
| |
| /* Oh, the horror. |
| * If we can't add the ACL or we fail in |
| * xfs_init_security we must back out. |
| * ENOSPC can hit here, among other things. |
| */ |
| xfs_dentry_to_name(&teardown, dentry); |
| |
| xfs_remove(XFS_I(dir), &teardown, XFS_I(inode)); |
| iput(inode); |
| } |
| |
| STATIC int |
| xfs_vn_mknod( |
| struct inode *dir, |
| struct dentry *dentry, |
| int mode, |
| dev_t rdev) |
| { |
| struct inode *inode; |
| struct xfs_inode *ip = NULL; |
| xfs_acl_t *default_acl = NULL; |
| struct xfs_name name; |
| int (*test_default_acl)(struct inode *) = _ACL_DEFAULT_EXISTS; |
| int error; |
| |
| /* |
| * Irix uses Missed'em'V split, but doesn't want to see |
| * the upper 5 bits of (14bit) major. |
| */ |
| if (unlikely(!sysv_valid_dev(rdev) || MAJOR(rdev) & ~0x1ff)) |
| return -EINVAL; |
| |
| if (test_default_acl && test_default_acl(dir)) { |
| if (!_ACL_ALLOC(default_acl)) { |
| return -ENOMEM; |
| } |
| if (!_ACL_GET_DEFAULT(dir, default_acl)) { |
| _ACL_FREE(default_acl); |
| default_acl = NULL; |
| } |
| } |
| |
| xfs_dentry_to_name(&name, dentry); |
| |
| if (IS_POSIXACL(dir) && !default_acl) |
| mode &= ~current_umask(); |
| |
| switch (mode & S_IFMT) { |
| case S_IFCHR: |
| case S_IFBLK: |
| case S_IFIFO: |
| case S_IFSOCK: |
| rdev = sysv_encode_dev(rdev); |
| case S_IFREG: |
| error = xfs_create(XFS_I(dir), &name, mode, rdev, &ip, NULL); |
| break; |
| case S_IFDIR: |
| error = xfs_mkdir(XFS_I(dir), &name, mode, &ip, NULL); |
| break; |
| default: |
| error = EINVAL; |
| break; |
| } |
| |
| if (unlikely(error)) |
| goto out_free_acl; |
| |
| inode = VFS_I(ip); |
| |
| error = xfs_init_security(inode, dir); |
| if (unlikely(error)) |
| goto out_cleanup_inode; |
| |
| if (default_acl) { |
| error = _ACL_INHERIT(inode, mode, default_acl); |
| if (unlikely(error)) |
| goto out_cleanup_inode; |
| _ACL_FREE(default_acl); |
| } |
| |
| |
| d_instantiate(dentry, inode); |
| return -error; |
| |
| out_cleanup_inode: |
| xfs_cleanup_inode(dir, inode, dentry); |
| out_free_acl: |
| if (default_acl) |
| _ACL_FREE(default_acl); |
| return -error; |
| } |
| |
| STATIC int |
| xfs_vn_create( |
| struct inode *dir, |
| struct dentry *dentry, |
| int mode, |
| struct nameidata *nd) |
| { |
| return xfs_vn_mknod(dir, dentry, mode, 0); |
| } |
| |
| STATIC int |
| xfs_vn_mkdir( |
| struct inode *dir, |
| struct dentry *dentry, |
| int mode) |
| { |
| return xfs_vn_mknod(dir, dentry, mode|S_IFDIR, 0); |
| } |
| |
| STATIC struct dentry * |
| xfs_vn_lookup( |
| struct inode *dir, |
| struct dentry *dentry, |
| struct nameidata *nd) |
| { |
| struct xfs_inode *cip; |
| struct xfs_name name; |
| int error; |
| |
| if (dentry->d_name.len >= MAXNAMELEN) |
| return ERR_PTR(-ENAMETOOLONG); |
| |
| xfs_dentry_to_name(&name, dentry); |
| error = xfs_lookup(XFS_I(dir), &name, &cip, NULL); |
| if (unlikely(error)) { |
| if (unlikely(error != ENOENT)) |
| return ERR_PTR(-error); |
| d_add(dentry, NULL); |
| return NULL; |
| } |
| |
| return d_splice_alias(VFS_I(cip), dentry); |
| } |
| |
| STATIC struct dentry * |
| xfs_vn_ci_lookup( |
| struct inode *dir, |
| struct dentry *dentry, |
| struct nameidata *nd) |
| { |
| struct xfs_inode *ip; |
| struct xfs_name xname; |
| struct xfs_name ci_name; |
| struct qstr dname; |
| int error; |
| |
| if (dentry->d_name.len >= MAXNAMELEN) |
| return ERR_PTR(-ENAMETOOLONG); |
| |
| xfs_dentry_to_name(&xname, dentry); |
| error = xfs_lookup(XFS_I(dir), &xname, &ip, &ci_name); |
| if (unlikely(error)) { |
| if (unlikely(error != ENOENT)) |
| return ERR_PTR(-error); |
| /* |
| * call d_add(dentry, NULL) here when d_drop_negative_children |
| * is called in xfs_vn_mknod (ie. allow negative dentries |
| * with CI filesystems). |
| */ |
| return NULL; |
| } |
| |
| /* if exact match, just splice and exit */ |
| if (!ci_name.name) |
| return d_splice_alias(VFS_I(ip), dentry); |
| |
| /* else case-insensitive match... */ |
| dname.name = ci_name.name; |
| dname.len = ci_name.len; |
| dentry = d_add_ci(dentry, VFS_I(ip), &dname); |
| kmem_free(ci_name.name); |
| return dentry; |
| } |
| |
| STATIC int |
| xfs_vn_link( |
| struct dentry *old_dentry, |
| struct inode *dir, |
| struct dentry *dentry) |
| { |
| struct inode *inode = old_dentry->d_inode; |
| struct xfs_name name; |
| int error; |
| |
| xfs_dentry_to_name(&name, dentry); |
| |
| error = xfs_link(XFS_I(dir), XFS_I(inode), &name); |
| if (unlikely(error)) |
| return -error; |
| |
| atomic_inc(&inode->i_count); |
| d_instantiate(dentry, inode); |
| return 0; |
| } |
| |
| STATIC int |
| xfs_vn_unlink( |
| struct inode *dir, |
| struct dentry *dentry) |
| { |
| struct xfs_name name; |
| int error; |
| |
| xfs_dentry_to_name(&name, dentry); |
| |
| error = -xfs_remove(XFS_I(dir), &name, XFS_I(dentry->d_inode)); |
| if (error) |
| return error; |
| |
| /* |
| * With unlink, the VFS makes the dentry "negative": no inode, |
| * but still hashed. This is incompatible with case-insensitive |
| * mode, so invalidate (unhash) the dentry in CI-mode. |
| */ |
| if (xfs_sb_version_hasasciici(&XFS_M(dir->i_sb)->m_sb)) |
| d_invalidate(dentry); |
| return 0; |
| } |
| |
| STATIC int |
| xfs_vn_symlink( |
| struct inode *dir, |
| struct dentry *dentry, |
| const char *symname) |
| { |
| struct inode *inode; |
| struct xfs_inode *cip = NULL; |
| struct xfs_name name; |
| int error; |
| mode_t mode; |
| |
| mode = S_IFLNK | |
| (irix_symlink_mode ? 0777 & ~current_umask() : S_IRWXUGO); |
| xfs_dentry_to_name(&name, dentry); |
| |
| error = xfs_symlink(XFS_I(dir), &name, symname, mode, &cip, NULL); |
| if (unlikely(error)) |
| goto out; |
| |
| inode = VFS_I(cip); |
| |
| error = xfs_init_security(inode, dir); |
| if (unlikely(error)) |
| goto out_cleanup_inode; |
| |
| d_instantiate(dentry, inode); |
| return 0; |
| |
| out_cleanup_inode: |
| xfs_cleanup_inode(dir, inode, dentry); |
| out: |
| return -error; |
| } |
| |
| STATIC int |
| xfs_vn_rename( |
| struct inode *odir, |
| struct dentry *odentry, |
| struct inode *ndir, |
| struct dentry *ndentry) |
| { |
| struct inode *new_inode = ndentry->d_inode; |
| struct xfs_name oname; |
| struct xfs_name nname; |
| |
| xfs_dentry_to_name(&oname, odentry); |
| xfs_dentry_to_name(&nname, ndentry); |
| |
| return -xfs_rename(XFS_I(odir), &oname, XFS_I(odentry->d_inode), |
| XFS_I(ndir), &nname, new_inode ? |
| XFS_I(new_inode) : NULL); |
| } |
| |
| /* |
| * careful here - this function can get called recursively, so |
| * we need to be very careful about how much stack we use. |
| * uio is kmalloced for this reason... |
| */ |
| STATIC void * |
| xfs_vn_follow_link( |
| struct dentry *dentry, |
| struct nameidata *nd) |
| { |
| char *link; |
| int error = -ENOMEM; |
| |
| link = kmalloc(MAXPATHLEN+1, GFP_KERNEL); |
| if (!link) |
| goto out_err; |
| |
| error = -xfs_readlink(XFS_I(dentry->d_inode), link); |
| if (unlikely(error)) |
| goto out_kfree; |
| |
| nd_set_link(nd, link); |
| return NULL; |
| |
| out_kfree: |
| kfree(link); |
| out_err: |
| nd_set_link(nd, ERR_PTR(error)); |
| return NULL; |
| } |
| |
| STATIC void |
| xfs_vn_put_link( |
| struct dentry *dentry, |
| struct nameidata *nd, |
| void *p) |
| { |
| char *s = nd_get_link(nd); |
| |
| if (!IS_ERR(s)) |
| kfree(s); |
| } |
| |
| #ifdef CONFIG_XFS_POSIX_ACL |
| STATIC int |
| xfs_check_acl( |
| struct inode *inode, |
| int mask) |
| { |
| struct xfs_inode *ip = XFS_I(inode); |
| int error; |
| |
| xfs_itrace_entry(ip); |
| |
| if (XFS_IFORK_Q(ip)) { |
| error = xfs_acl_iaccess(ip, mask, NULL); |
| if (error != -1) |
| return -error; |
| } |
| |
| return -EAGAIN; |
| } |
| |
| STATIC int |
| xfs_vn_permission( |
| struct inode *inode, |
| int mask) |
| { |
| return generic_permission(inode, mask, xfs_check_acl); |
| } |
| #else |
| #define xfs_vn_permission NULL |
| #endif |
| |
| STATIC int |
| xfs_vn_getattr( |
| struct vfsmount *mnt, |
| struct dentry *dentry, |
| struct kstat *stat) |
| { |
| struct inode *inode = dentry->d_inode; |
| struct xfs_inode *ip = XFS_I(inode); |
| struct xfs_mount *mp = ip->i_mount; |
| |
| xfs_itrace_entry(ip); |
| |
| if (XFS_FORCED_SHUTDOWN(mp)) |
| return XFS_ERROR(EIO); |
| |
| stat->size = XFS_ISIZE(ip); |
| stat->dev = inode->i_sb->s_dev; |
| stat->mode = ip->i_d.di_mode; |
| stat->nlink = ip->i_d.di_nlink; |
| stat->uid = ip->i_d.di_uid; |
| stat->gid = ip->i_d.di_gid; |
| stat->ino = ip->i_ino; |
| #if XFS_BIG_INUMS |
| stat->ino += mp->m_inoadd; |
| #endif |
| stat->atime = inode->i_atime; |
| stat->mtime.tv_sec = ip->i_d.di_mtime.t_sec; |
| stat->mtime.tv_nsec = ip->i_d.di_mtime.t_nsec; |
| stat->ctime.tv_sec = ip->i_d.di_ctime.t_sec; |
| stat->ctime.tv_nsec = ip->i_d.di_ctime.t_nsec; |
| stat->blocks = |
| XFS_FSB_TO_BB(mp, ip->i_d.di_nblocks + ip->i_delayed_blks); |
| |
| |
| switch (inode->i_mode & S_IFMT) { |
| case S_IFBLK: |
| case S_IFCHR: |
| stat->blksize = BLKDEV_IOSIZE; |
| stat->rdev = MKDEV(sysv_major(ip->i_df.if_u2.if_rdev) & 0x1ff, |
| sysv_minor(ip->i_df.if_u2.if_rdev)); |
| break; |
| default: |
| if (XFS_IS_REALTIME_INODE(ip)) { |
| /* |
| * If the file blocks are being allocated from a |
| * realtime volume, then return the inode's realtime |
| * extent size or the realtime volume's extent size. |
| */ |
| stat->blksize = |
| xfs_get_extsz_hint(ip) << mp->m_sb.sb_blocklog; |
| } else |
| stat->blksize = xfs_preferred_iosize(mp); |
| stat->rdev = 0; |
| break; |
| } |
| |
| return 0; |
| } |
| |
| STATIC int |
| xfs_vn_setattr( |
| struct dentry *dentry, |
| struct iattr *iattr) |
| { |
| return -xfs_setattr(XFS_I(dentry->d_inode), iattr, 0); |
| } |
| |
| /* |
| * block_truncate_page can return an error, but we can't propagate it |
| * at all here. Leave a complaint + stack trace in the syslog because |
| * this could be bad. If it is bad, we need to propagate the error further. |
| */ |
| STATIC void |
| xfs_vn_truncate( |
| struct inode *inode) |
| { |
| int error; |
| error = block_truncate_page(inode->i_mapping, inode->i_size, |
| xfs_get_blocks); |
| WARN_ON(error); |
| } |
| |
| STATIC long |
| xfs_vn_fallocate( |
| struct inode *inode, |
| int mode, |
| loff_t offset, |
| loff_t len) |
| { |
| long error; |
| loff_t new_size = 0; |
| xfs_flock64_t bf; |
| xfs_inode_t *ip = XFS_I(inode); |
| |
| /* preallocation on directories not yet supported */ |
| error = -ENODEV; |
| if (S_ISDIR(inode->i_mode)) |
| goto out_error; |
| |
| bf.l_whence = 0; |
| bf.l_start = offset; |
| bf.l_len = len; |
| |
| xfs_ilock(ip, XFS_IOLOCK_EXCL); |
| error = xfs_change_file_space(ip, XFS_IOC_RESVSP, &bf, |
| 0, XFS_ATTR_NOLOCK); |
| if (!error && !(mode & FALLOC_FL_KEEP_SIZE) && |
| offset + len > i_size_read(inode)) |
| new_size = offset + len; |
| |
| /* Change file size if needed */ |
| if (new_size) { |
| struct iattr iattr; |
| |
| iattr.ia_valid = ATTR_SIZE; |
| iattr.ia_size = new_size; |
| error = xfs_setattr(ip, &iattr, XFS_ATTR_NOLOCK); |
| } |
| |
| xfs_iunlock(ip, XFS_IOLOCK_EXCL); |
| out_error: |
| return error; |
| } |
| |
| #define XFS_FIEMAP_FLAGS (FIEMAP_FLAG_SYNC|FIEMAP_FLAG_XATTR) |
| |
| /* |
| * Call fiemap helper to fill in user data. |
| * Returns positive errors to xfs_getbmap. |
| */ |
| STATIC int |
| xfs_fiemap_format( |
| void **arg, |
| struct getbmapx *bmv, |
| int *full) |
| { |
| int error; |
| struct fiemap_extent_info *fieinfo = *arg; |
| u32 fiemap_flags = 0; |
| u64 logical, physical, length; |
| |
| /* Do nothing for a hole */ |
| if (bmv->bmv_block == -1LL) |
| return 0; |
| |
| logical = BBTOB(bmv->bmv_offset); |
| physical = BBTOB(bmv->bmv_block); |
| length = BBTOB(bmv->bmv_length); |
| |
| if (bmv->bmv_oflags & BMV_OF_PREALLOC) |
| fiemap_flags |= FIEMAP_EXTENT_UNWRITTEN; |
| else if (bmv->bmv_oflags & BMV_OF_DELALLOC) { |
| fiemap_flags |= FIEMAP_EXTENT_DELALLOC; |
| physical = 0; /* no block yet */ |
| } |
| if (bmv->bmv_oflags & BMV_OF_LAST) |
| fiemap_flags |= FIEMAP_EXTENT_LAST; |
| |
| error = fiemap_fill_next_extent(fieinfo, logical, physical, |
| length, fiemap_flags); |
| if (error > 0) { |
| error = 0; |
| *full = 1; /* user array now full */ |
| } |
| |
| return -error; |
| } |
| |
| STATIC int |
| xfs_vn_fiemap( |
| struct inode *inode, |
| struct fiemap_extent_info *fieinfo, |
| u64 start, |
| u64 length) |
| { |
| xfs_inode_t *ip = XFS_I(inode); |
| struct getbmapx bm; |
| int error; |
| |
| error = fiemap_check_flags(fieinfo, XFS_FIEMAP_FLAGS); |
| if (error) |
| return error; |
| |
| /* Set up bmap header for xfs internal routine */ |
| bm.bmv_offset = BTOBB(start); |
| /* Special case for whole file */ |
| if (length == FIEMAP_MAX_OFFSET) |
| bm.bmv_length = -1LL; |
| else |
| bm.bmv_length = BTOBB(length); |
| |
| /* our formatter will tell xfs_getbmap when to stop. */ |
| bm.bmv_count = MAXEXTNUM; |
| bm.bmv_iflags = BMV_IF_PREALLOC; |
| if (fieinfo->fi_flags & FIEMAP_FLAG_XATTR) |
| bm.bmv_iflags |= BMV_IF_ATTRFORK; |
| if (!(fieinfo->fi_flags & FIEMAP_FLAG_SYNC)) |
| bm.bmv_iflags |= BMV_IF_DELALLOC; |
| |
| error = xfs_getbmap(ip, &bm, xfs_fiemap_format, fieinfo); |
| if (error) |
| return -error; |
| |
| return 0; |
| } |
| |
| static const struct inode_operations xfs_inode_operations = { |
| .permission = xfs_vn_permission, |
| .truncate = xfs_vn_truncate, |
| .getattr = xfs_vn_getattr, |
| .setattr = xfs_vn_setattr, |
| .setxattr = generic_setxattr, |
| .getxattr = generic_getxattr, |
| .removexattr = generic_removexattr, |
| .listxattr = xfs_vn_listxattr, |
| .fallocate = xfs_vn_fallocate, |
| .fiemap = xfs_vn_fiemap, |
| }; |
| |
| static const struct inode_operations xfs_dir_inode_operations = { |
| .create = xfs_vn_create, |
| .lookup = xfs_vn_lookup, |
| .link = xfs_vn_link, |
| .unlink = xfs_vn_unlink, |
| .symlink = xfs_vn_symlink, |
| .mkdir = xfs_vn_mkdir, |
| /* |
| * Yes, XFS uses the same method for rmdir and unlink. |
| * |
| * There are some subtile differences deeper in the code, |
| * but we use S_ISDIR to check for those. |
| */ |
| .rmdir = xfs_vn_unlink, |
| .mknod = xfs_vn_mknod, |
| .rename = xfs_vn_rename, |
| .permission = xfs_vn_permission, |
| .getattr = xfs_vn_getattr, |
| .setattr = xfs_vn_setattr, |
| .setxattr = generic_setxattr, |
| .getxattr = generic_getxattr, |
| .removexattr = generic_removexattr, |
| .listxattr = xfs_vn_listxattr, |
| }; |
| |
| static const struct inode_operations xfs_dir_ci_inode_operations = { |
| .create = xfs_vn_create, |
| .lookup = xfs_vn_ci_lookup, |
| .link = xfs_vn_link, |
| .unlink = xfs_vn_unlink, |
| .symlink = xfs_vn_symlink, |
| .mkdir = xfs_vn_mkdir, |
| /* |
| * Yes, XFS uses the same method for rmdir and unlink. |
| * |
| * There are some subtile differences deeper in the code, |
| * but we use S_ISDIR to check for those. |
| */ |
| .rmdir = xfs_vn_unlink, |
| .mknod = xfs_vn_mknod, |
| .rename = xfs_vn_rename, |
| .permission = xfs_vn_permission, |
| .getattr = xfs_vn_getattr, |
| .setattr = xfs_vn_setattr, |
| .setxattr = generic_setxattr, |
| .getxattr = generic_getxattr, |
| .removexattr = generic_removexattr, |
| .listxattr = xfs_vn_listxattr, |
| }; |
| |
| static const struct inode_operations xfs_symlink_inode_operations = { |
| .readlink = generic_readlink, |
| .follow_link = xfs_vn_follow_link, |
| .put_link = xfs_vn_put_link, |
| .permission = xfs_vn_permission, |
| .getattr = xfs_vn_getattr, |
| .setattr = xfs_vn_setattr, |
| .setxattr = generic_setxattr, |
| .getxattr = generic_getxattr, |
| .removexattr = generic_removexattr, |
| .listxattr = xfs_vn_listxattr, |
| }; |
| |
| STATIC void |
| xfs_diflags_to_iflags( |
| struct inode *inode, |
| struct xfs_inode *ip) |
| { |
| if (ip->i_d.di_flags & XFS_DIFLAG_IMMUTABLE) |
| inode->i_flags |= S_IMMUTABLE; |
| else |
| inode->i_flags &= ~S_IMMUTABLE; |
| if (ip->i_d.di_flags & XFS_DIFLAG_APPEND) |
| inode->i_flags |= S_APPEND; |
| else |
| inode->i_flags &= ~S_APPEND; |
| if (ip->i_d.di_flags & XFS_DIFLAG_SYNC) |
| inode->i_flags |= S_SYNC; |
| else |
| inode->i_flags &= ~S_SYNC; |
| if (ip->i_d.di_flags & XFS_DIFLAG_NOATIME) |
| inode->i_flags |= S_NOATIME; |
| else |
| inode->i_flags &= ~S_NOATIME; |
| } |
| |
| /* |
| * Initialize the Linux inode, set up the operation vectors and |
| * unlock the inode. |
| * |
| * When reading existing inodes from disk this is called directly |
| * from xfs_iget, when creating a new inode it is called from |
| * xfs_ialloc after setting up the inode. |
| * |
| * We are always called with an uninitialised linux inode here. |
| * We need to initialise the necessary fields and take a reference |
| * on it. |
| */ |
| void |
| xfs_setup_inode( |
| struct xfs_inode *ip) |
| { |
| struct inode *inode = &ip->i_vnode; |
| |
| inode->i_ino = ip->i_ino; |
| inode->i_state = I_NEW|I_LOCK; |
| inode_add_to_lists(ip->i_mount->m_super, inode); |
| |
| inode->i_mode = ip->i_d.di_mode; |
| inode->i_nlink = ip->i_d.di_nlink; |
| inode->i_uid = ip->i_d.di_uid; |
| inode->i_gid = ip->i_d.di_gid; |
| |
| switch (inode->i_mode & S_IFMT) { |
| case S_IFBLK: |
| case S_IFCHR: |
| inode->i_rdev = |
| MKDEV(sysv_major(ip->i_df.if_u2.if_rdev) & 0x1ff, |
| sysv_minor(ip->i_df.if_u2.if_rdev)); |
| break; |
| default: |
| inode->i_rdev = 0; |
| break; |
| } |
| |
| inode->i_generation = ip->i_d.di_gen; |
| i_size_write(inode, ip->i_d.di_size); |
| inode->i_atime.tv_sec = ip->i_d.di_atime.t_sec; |
| inode->i_atime.tv_nsec = ip->i_d.di_atime.t_nsec; |
| inode->i_mtime.tv_sec = ip->i_d.di_mtime.t_sec; |
| inode->i_mtime.tv_nsec = ip->i_d.di_mtime.t_nsec; |
| inode->i_ctime.tv_sec = ip->i_d.di_ctime.t_sec; |
| inode->i_ctime.tv_nsec = ip->i_d.di_ctime.t_nsec; |
| xfs_diflags_to_iflags(inode, ip); |
| |
| switch (inode->i_mode & S_IFMT) { |
| case S_IFREG: |
| inode->i_op = &xfs_inode_operations; |
| inode->i_fop = &xfs_file_operations; |
| inode->i_mapping->a_ops = &xfs_address_space_operations; |
| break; |
| case S_IFDIR: |
| if (xfs_sb_version_hasasciici(&XFS_M(inode->i_sb)->m_sb)) |
| inode->i_op = &xfs_dir_ci_inode_operations; |
| else |
| inode->i_op = &xfs_dir_inode_operations; |
| inode->i_fop = &xfs_dir_file_operations; |
| break; |
| case S_IFLNK: |
| inode->i_op = &xfs_symlink_inode_operations; |
| if (!(ip->i_df.if_flags & XFS_IFINLINE)) |
| inode->i_mapping->a_ops = &xfs_address_space_operations; |
| break; |
| default: |
| inode->i_op = &xfs_inode_operations; |
| init_special_inode(inode, inode->i_mode, inode->i_rdev); |
| break; |
| } |
| |
| xfs_iflags_clear(ip, XFS_INEW); |
| barrier(); |
| |
| unlock_new_inode(inode); |
| } |