diff options
Diffstat (limited to 'fs/ntfs3/frecord.c')
| -rw-r--r-- | fs/ntfs3/frecord.c | 97 |
1 files changed, 83 insertions, 14 deletions
diff --git a/fs/ntfs3/frecord.c b/fs/ntfs3/frecord.c index a469c608a394..41c7ffad2790 100644 --- a/fs/ntfs3/frecord.c +++ b/fs/ntfs3/frecord.c @@ -102,7 +102,9 @@ void ni_clear(struct ntfs_inode *ni) { struct rb_node *node; - if (!ni->vfs_inode.i_nlink && ni->mi.mrec && is_rec_inuse(ni->mi.mrec)) + if (!ni->vfs_inode.i_nlink && ni->mi.mrec && + is_rec_inuse(ni->mi.mrec) && + !(ni->mi.sbi->flags & NTFS_FLAGS_LOG_REPLAYING)) ni_delete_all(ni); al_destroy(ni); @@ -1900,13 +1902,13 @@ enum REPARSE_SIGN ni_parse_reparse(struct ntfs_inode *ni, struct ATTRIB *attr, /* * fiemap_fill_next_extent_k - a copy of fiemap_fill_next_extent - * but it accepts kernel address for fi_extents_start + * but it uses 'fe_k' instead of fieinfo->fi_extents_start */ static int fiemap_fill_next_extent_k(struct fiemap_extent_info *fieinfo, - u64 logical, u64 phys, u64 len, u32 flags) + struct fiemap_extent *fe_k, u64 logical, + u64 phys, u64 len, u32 flags) { struct fiemap_extent extent; - struct fiemap_extent __user *dest = fieinfo->fi_extents_start; /* only count the extents */ if (fieinfo->fi_extents_max == 0) { @@ -1930,8 +1932,7 @@ static int fiemap_fill_next_extent_k(struct fiemap_extent_info *fieinfo, extent.fe_length = len; extent.fe_flags = flags; - dest += fieinfo->fi_extents_mapped; - memcpy(dest, &extent, sizeof(extent)); + memcpy(fe_k + fieinfo->fi_extents_mapped, &extent, sizeof(extent)); fieinfo->fi_extents_mapped++; if (fieinfo->fi_extents_mapped == fieinfo->fi_extents_max) @@ -1949,7 +1950,6 @@ int ni_fiemap(struct ntfs_inode *ni, struct fiemap_extent_info *fieinfo, __u64 vbo, __u64 len) { int err = 0; - struct fiemap_extent __user *fe_u = fieinfo->fi_extents_start; struct fiemap_extent *fe_k = NULL; struct ntfs_sb_info *sbi = ni->mi.sbi; u8 cluster_bits = sbi->cluster_bits; @@ -2008,7 +2008,6 @@ int ni_fiemap(struct ntfs_inode *ni, struct fiemap_extent_info *fieinfo, err = -ENOMEM; goto out; } - fieinfo->fi_extents_start = fe_k; end = vbo + len; alloc_size = le64_to_cpu(attr->nres.alloc_size); @@ -2098,8 +2097,8 @@ int ni_fiemap(struct ntfs_inode *ni, struct fiemap_extent_info *fieinfo, if (vbo + dlen >= end) flags |= FIEMAP_EXTENT_LAST; - err = fiemap_fill_next_extent_k(fieinfo, vbo, lbo, dlen, - flags); + err = fiemap_fill_next_extent_k(fieinfo, fe_k, vbo, lbo, + dlen, flags); if (err < 0) break; @@ -2120,7 +2119,7 @@ int ni_fiemap(struct ntfs_inode *ni, struct fiemap_extent_info *fieinfo, if (vbo + bytes >= end) flags |= FIEMAP_EXTENT_LAST; - err = fiemap_fill_next_extent_k(fieinfo, vbo, lbo, bytes, + err = fiemap_fill_next_extent_k(fieinfo, fe_k, vbo, lbo, bytes, flags); if (err < 0) break; @@ -2137,15 +2136,13 @@ int ni_fiemap(struct ntfs_inode *ni, struct fiemap_extent_info *fieinfo, /* * Copy to user memory out of lock */ - if (copy_to_user(fe_u, fe_k, + if (copy_to_user(fieinfo->fi_extents_start, fe_k, fieinfo->fi_extents_max * sizeof(struct fiemap_extent))) { err = -EFAULT; } out: - /* Restore original pointer. */ - fieinfo->fi_extents_start = fe_u; kfree(fe_k); return err; } @@ -3455,3 +3452,75 @@ out: return 0; } + +/* + * ni_set_compress + * + * Helper for 'ntfs_fileattr_set'. + * Changes compression for empty files and directories only. + */ +int ni_set_compress(struct inode *inode, bool compr) +{ + int err; + struct ntfs_inode *ni = ntfs_i(inode); + struct ATTR_STD_INFO *std; + const char *bad_inode; + + if (is_compressed(ni) == !!compr) + return 0; + + if (is_sparsed(ni)) { + /* sparse and compress not compatible. */ + return -EOPNOTSUPP; + } + + if (!S_ISREG(inode->i_mode) && !S_ISDIR(inode->i_mode)) { + /*Skip other inodes. (symlink,fifo,...) */ + return -EOPNOTSUPP; + } + + bad_inode = NULL; + + ni_lock(ni); + + std = ni_std(ni); + if (!std) { + bad_inode = "no std"; + goto out; + } + + if (S_ISREG(inode->i_mode)) { + err = attr_set_compress(ni, compr); + if (err) { + if (err == -ENOENT) { + /* Fix on the fly? */ + /* Each file must contain data attribute. */ + bad_inode = "no data attribute"; + } + goto out; + } + } + + ni->std_fa = std->fa; + if (compr) + std->fa |= FILE_ATTRIBUTE_COMPRESSED; + else + std->fa &= ~FILE_ATTRIBUTE_COMPRESSED; + + if (ni->std_fa != std->fa) { + ni->std_fa = std->fa; + ni->mi.dirty = true; + } + /* update duplicate information and directory entries in ni_write_inode.*/ + ni->ni_flags |= NI_FLAG_UPDATE_PARENT; + err = 0; + +out: + ni_unlock(ni); + if (bad_inode) { + ntfs_bad_inode(inode, bad_inode); + err = -EINVAL; + } + + return err; +} |