int fat_notify_change(struct dentry *dentry, struct iattr *attr)
{
struct msdos_sb_info *sbi = MSDOS_SB(dentry->d_sb);
struct inode *inode = dentry->d_inode;
int mask, error = 0;
lock_kernel();
/*
* Expand the file. Since inode_setattr() updates ->i_size
* before calling the ->truncate(), but FAT needs to fill the
* hole before it.
*/
if (attr->ia_valid & ATTR_SIZE) {
if (attr->ia_size > inode->i_size) {
error = fat_cont_expand(inode, attr->ia_size);
//error = fat_cont_expand(inode, (unsigned int)attr->ia_size);
if (error || attr->ia_valid == ATTR_SIZE)
goto out;
attr->ia_valid &= ~ATTR_SIZE;
}
}
error = inode_change_ok(inode, attr);
if (error) {
if (sbi->options.quiet)
error = 0;
goto out;
}
if (((attr->ia_valid & ATTR_UID) &&
(attr->ia_uid != sbi->options.fs_uid)) ||
((attr->ia_valid & ATTR_GID) &&
(attr->ia_gid != sbi->options.fs_gid)) ||
((attr->ia_valid & ATTR_MODE) &&
(attr->ia_mode & ~MSDOS_VALID_MODE)))
error = -EPERM;
if (error) {
if (sbi->options.quiet)
error = 0;
goto out;
}
error = inode_setattr(inode, attr);
if (error)
goto out;
if (S_ISDIR(inode->i_mode))
mask = sbi->options.fs_dmask;
else
mask = sbi->options.fs_fmask;
inode->i_mode &= S_IFMT | (S_IRWXUGO & ~mask);
out:
unlock_kernel();
return error;
}
err = fat_chain_add(inode, cluster, 1);
if (err) {
fat_free_clusters(inode, cluster);
goto error;
}
}
err = fat_get_cluster(inode, FAT_ENT_EOF, &fclus, &dclus);
if (err < 0) {
fat_msg(sb, KERN_ERR,
"fat_fallocate():fat_get_cluster() error");
goto error;
}
MSDOS_I(inode)->mmu_private = (fclus + 1) << sbi->cluster_bits;
} else {
mutex_lock(&inode->i_mutex);
err = fat_cont_expand(inode, (offset + len));
if (err) {
fat_msg(sb, KERN_ERR,
"fat_fallocate():fat_cont_expand() error");
}
}
error:
mutex_unlock(&inode->i_mutex);
return err;
}
#endif
/* Free all clusters after the skip'th cluster. */
static int fat_free(struct inode *inode, int skip)
{
struct super_block *sb = inode->i_sb;