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| author | Anton Altaparmakov <aia21@cantab.net> | 2005-10-04 16:01:06 +0100 |
|---|---|---|
| committer | Anton Altaparmakov <aia21@cantab.net> | 2005-10-04 16:01:06 +0100 |
| commit | e9438250b635f7832e99a8c8d2e394dd1522ce65 (patch) | |
| tree | e91de9667aa45e9f02387a2dc013982af245d029 /fs/ntfs/inode.c | |
| parent | dd072330d1a60be11a5c284fa1e645350750a4fc (diff) | |
| download | linux-e9438250b635f7832e99a8c8d2e394dd1522ce65.tar.bz2 | |
NTFS: Enable ATTR_SIZE attribute changes in ntfs_setattr(). This completes
the initial implementation of file truncation. Now both open(2)ing
a file with the O_TRUNC flag and the {,f}truncate(2) system calls
will resize a file appropriately. The limitations are that only
uncompressed and unencrypted files are supported. Also, there is
only very limited support for highly fragmented files (the ones whose
$DATA attribute is split into multiple attribute extents).
Signed-off-by: Anton Altaparmakov <aia21@cantab.net>
Diffstat (limited to 'fs/ntfs/inode.c')
| -rw-r--r-- | fs/ntfs/inode.c | 23 |
1 files changed, 15 insertions, 8 deletions
diff --git a/fs/ntfs/inode.c b/fs/ntfs/inode.c index a1682342baa6..b24f4c4b2c5c 100644 --- a/fs/ntfs/inode.c +++ b/fs/ntfs/inode.c @@ -2845,8 +2845,7 @@ int ntfs_setattr(struct dentry *dentry, struct iattr *attr) err = inode_change_ok(vi, attr); if (err) - return err; - + goto out; /* We do not support NTFS ACLs yet. */ if (ia_valid & (ATTR_UID | ATTR_GID | ATTR_MODE)) { ntfs_warning(vi->i_sb, "Changes in user/group/mode are not " @@ -2854,14 +2853,22 @@ int ntfs_setattr(struct dentry *dentry, struct iattr *attr) err = -EOPNOTSUPP; goto out; } - if (ia_valid & ATTR_SIZE) { if (attr->ia_size != i_size_read(vi)) { - ntfs_warning(vi->i_sb, "Changes in inode size are not " - "supported yet, ignoring."); - err = -EOPNOTSUPP; - // TODO: Implement... - // err = vmtruncate(vi, attr->ia_size); + ntfs_inode *ni = NTFS_I(vi); + /* + * FIXME: For now we do not support resizing of + * compressed or encrypted files yet. + */ + if (NInoCompressed(ni) || NInoEncrypted(ni)) { + ntfs_warning(vi->i_sb, "Changes in inode size " + "are not supported yet for " + "%s files, ignoring.", + NInoCompressed(ni) ? + "compressed" : "encrypted"); + err = -EOPNOTSUPP; + } else + err = vmtruncate(vi, attr->ia_size); if (err || ia_valid == ATTR_SIZE) goto out; } else { |