char name[nlen + 1];
int err;
struct dentry *tmp_dentry = NULL;
- struct dentry *hidden_dentry;
- struct dentry *hidden_dir_dentry = NULL;
+ struct dentry *lower_dentry;
+ struct dentry *lower_dir_dentry = NULL;
- hidden_dentry = unionfs_lower_dentry_idx(dentry, bstart);
+ lower_dentry = unionfs_lower_dentry_idx(dentry, bstart);
sprintf(name, ".unionfs%*.*lx",
- i_inosize, i_inosize, hidden_dentry->d_inode->i_ino);
+ i_inosize, i_inosize, lower_dentry->d_inode->i_ino);
/*
* Loop, looking for an unused temp name to copyup to.
printk(KERN_DEBUG "unionfs: trying to rename %s to %s\n",
dentry->d_name.name, name);
- tmp_dentry = lookup_one_len(name, hidden_dentry->d_parent,
+ tmp_dentry = lookup_one_len(name, lower_dentry->d_parent,
nlen);
if (IS_ERR(tmp_dentry)) {
err = PTR_ERR(tmp_dentry);
}
/* bring it to the same state as an unlinked file */
- hidden_dentry = unionfs_lower_dentry_idx(dentry, dbstart(dentry));
+ lower_dentry = unionfs_lower_dentry_idx(dentry, dbstart(dentry));
if (!unionfs_lower_inode_idx(dentry->d_inode, bindex)) {
- atomic_inc(&hidden_dentry->d_inode->i_count);
+ atomic_inc(&lower_dentry->d_inode->i_count);
unionfs_set_lower_inode_idx(dentry->d_inode, bindex,
- hidden_dentry->d_inode);
+ lower_dentry->d_inode);
}
- hidden_dir_dentry = lock_parent(hidden_dentry);
- err = vfs_unlink(hidden_dir_dentry->d_inode, hidden_dentry);
- unlock_dir(hidden_dir_dentry);
+ lower_dir_dentry = lock_parent(lower_dentry);
+ err = vfs_unlink(lower_dir_dentry->d_inode, lower_dentry);
+ unlock_dir(lower_dir_dentry);
out:
if (!err)
static int open_all_files(struct file *file)
{
int bindex, bstart, bend, err = 0;
- struct file *hidden_file;
- struct dentry *hidden_dentry;
+ struct file *lower_file;
+ struct dentry *lower_dentry;
struct dentry *dentry = file->f_dentry;
struct super_block *sb = dentry->d_sb;
bend = dbend(dentry);
for (bindex = bstart; bindex <= bend; bindex++) {
- hidden_dentry = unionfs_lower_dentry_idx(dentry, bindex);
- if (!hidden_dentry)
+ lower_dentry = unionfs_lower_dentry_idx(dentry, bindex);
+ if (!lower_dentry)
continue;
- dget(hidden_dentry);
+ dget(lower_dentry);
unionfs_mntget(dentry, bindex);
unionfs_read_lock(sb);
branchget(sb, bindex);
unionfs_read_unlock(sb);
- hidden_file =
- dentry_open(hidden_dentry,
+ lower_file =
+ dentry_open(lower_dentry,
unionfs_lower_mnt_idx(dentry, bindex),
file->f_flags);
- if (IS_ERR(hidden_file)) {
- err = PTR_ERR(hidden_file);
+ if (IS_ERR(lower_file)) {
+ err = PTR_ERR(lower_file);
goto out;
} else
- unionfs_set_lower_file_idx(file, bindex, hidden_file);
+ unionfs_set_lower_file_idx(file, bindex, lower_file);
}
out:
return err;
static int open_highest_file(struct file *file, int willwrite)
{
int bindex, bstart, bend, err = 0;
- struct file *hidden_file;
- struct dentry *hidden_dentry;
+ struct file *lower_file;
+ struct dentry *lower_dentry;
struct dentry *dentry = file->f_dentry;
struct inode *parent_inode = dentry->d_parent->d_inode;
struct super_block *sb = dentry->d_sb;
bstart = dbstart(dentry);
bend = dbend(dentry);
- hidden_dentry = unionfs_lower_dentry(dentry);
+ lower_dentry = unionfs_lower_dentry(dentry);
if (willwrite && IS_WRITE_FLAG(file->f_flags) && is_robranch(dentry)) {
for (bindex = bstart - 1; bindex >= 0; bindex--) {
err = copyup_file(parent_inode, file, bstart, bindex,
goto out;
}
- dget(hidden_dentry);
+ dget(lower_dentry);
unionfs_mntget(dentry, bstart);
unionfs_read_lock(sb);
branchget(sb, bstart);
unionfs_read_unlock(sb);
- hidden_file = dentry_open(hidden_dentry,
- unionfs_lower_mnt_idx(dentry, bstart),
- file->f_flags);
- if (IS_ERR(hidden_file)) {
- err = PTR_ERR(hidden_file);
+ lower_file = dentry_open(lower_dentry,
+ unionfs_lower_mnt_idx(dentry, bstart),
+ file->f_flags);
+ if (IS_ERR(lower_file)) {
+ err = PTR_ERR(lower_file);
goto out;
}
- unionfs_set_lower_file(file, hidden_file);
+ unionfs_set_lower_file(file, lower_file);
/* Fix up the position. */
- hidden_file->f_pos = file->f_pos;
+ lower_file->f_pos = file->f_pos;
- memcpy(&hidden_file->f_ra, &file->f_ra, sizeof(struct file_ra_state));
+ memcpy(&lower_file->f_ra, &file->f_ra, sizeof(struct file_ra_state));
out:
return err;
}
/* unionfs_open helper function: open a directory */
static int __open_dir(struct inode *inode, struct file *file)
{
- struct dentry *hidden_dentry;
- struct file *hidden_file;
+ struct dentry *lower_dentry;
+ struct file *lower_file;
int bindex, bstart, bend;
bstart = fbstart(file) = dbstart(file->f_dentry);
bend = fbend(file) = dbend(file->f_dentry);
for (bindex = bstart; bindex <= bend; bindex++) {
- hidden_dentry =
+ lower_dentry =
unionfs_lower_dentry_idx(file->f_dentry, bindex);
- if (!hidden_dentry)
+ if (!lower_dentry)
continue;
- dget(hidden_dentry);
+ dget(lower_dentry);
unionfs_mntget(file->f_dentry, bindex);
- hidden_file = dentry_open(hidden_dentry,
- unionfs_lower_mnt_idx(file->f_dentry,
- bindex),
- file->f_flags);
- if (IS_ERR(hidden_file))
- return PTR_ERR(hidden_file);
+ lower_file = dentry_open(lower_dentry,
+ unionfs_lower_mnt_idx(file->f_dentry,
+ bindex),
+ file->f_flags);
+ if (IS_ERR(lower_file))
+ return PTR_ERR(lower_file);
- unionfs_set_lower_file_idx(file, bindex, hidden_file);
+ unionfs_set_lower_file_idx(file, bindex, lower_file);
/*
* The branchget goes after the open, because otherwise
/* unionfs_open helper function: open a file */
static int __open_file(struct inode *inode, struct file *file)
{
- struct dentry *hidden_dentry;
- struct file *hidden_file;
- int hidden_flags;
+ struct dentry *lower_dentry;
+ struct file *lower_file;
+ int lower_flags;
int bindex, bstart, bend;
- hidden_dentry = unionfs_lower_dentry(file->f_dentry);
- hidden_flags = file->f_flags;
+ lower_dentry = unionfs_lower_dentry(file->f_dentry);
+ lower_flags = file->f_flags;
bstart = fbstart(file) = dbstart(file->f_dentry);
bend = fbend(file) = dbend(file->f_dentry);
/*
- * check for the permission for hidden file. If the error is
+ * check for the permission for lower file. If the error is
* COPYUP_ERR, copyup the file.
*/
- if (hidden_dentry->d_inode && is_robranch(file->f_dentry)) {
+ if (lower_dentry->d_inode && is_robranch(file->f_dentry)) {
/*
* if the open will change the file, copy it up otherwise
* defer it.
*/
- if (hidden_flags & O_TRUNC) {
+ if (lower_flags & O_TRUNC) {
int size = 0;
int err = -EROFS;
}
return err;
} else
- hidden_flags &= ~(OPEN_WRITE_FLAGS);
+ lower_flags &= ~(OPEN_WRITE_FLAGS);
}
- dget(hidden_dentry);
+ dget(lower_dentry);
/*
* dentry_open will decrement mnt refcnt if err.
* otherwise fput() will do an mntput() for us upon file close.
*/
unionfs_mntget(file->f_dentry, bstart);
- hidden_file =
- dentry_open(hidden_dentry,
+ lower_file =
+ dentry_open(lower_dentry,
unionfs_lower_mnt_idx(file->f_dentry, bstart),
- hidden_flags);
- if (IS_ERR(hidden_file))
- return PTR_ERR(hidden_file);
+ lower_flags);
+ if (IS_ERR(lower_file))
+ return PTR_ERR(lower_file);
- unionfs_set_lower_file(file, hidden_file);
+ unionfs_set_lower_file(file, lower_file);
unionfs_read_lock(inode->i_sb);
branchget(inode->i_sb, bstart);
unionfs_read_unlock(inode->i_sb);
int unionfs_open(struct inode *inode, struct file *file)
{
int err = 0;
- struct file *hidden_file = NULL;
+ struct file *lower_file = NULL;
struct dentry *dentry = NULL;
int bindex = 0, bstart = 0, bend = 0;
int size;
/*
* open all directories and make the unionfs file struct point to
- * these hidden file structs
+ * these lower file structs
*/
if (S_ISDIR(inode->i_mode))
err = __open_dir(inode, file); /* open a dir */
if (err) {
atomic_dec(&UNIONFS_I(dentry->d_inode)->totalopens);
for (bindex = bstart; bindex <= bend; bindex++) {
- hidden_file = unionfs_lower_file_idx(file, bindex);
- if (!hidden_file)
+ lower_file = unionfs_lower_file_idx(file, bindex);
+ if (!lower_file)
continue;
unionfs_read_lock(file->f_dentry->d_sb);
branchput(file->f_dentry->d_sb, bindex);
unionfs_read_unlock(file->f_dentry->d_sb);
- /* fput calls dput for hidden_dentry */
- fput(hidden_file);
+ /* fput calls dput for lower_dentry */
+ fput(lower_file);
}
}
/* release all lower object references & free the file info structure */
int unionfs_file_release(struct inode *inode, struct file *file)
{
- struct file *hidden_file = NULL;
+ struct file *lower_file = NULL;
struct unionfs_file_info *fileinfo;
struct unionfs_inode_info *inodeinfo;
struct super_block *sb = inode->i_sb;
BUG_ON(file->f_dentry->d_inode != inode);
inodeinfo = UNIONFS_I(inode);
- /* fput all the hidden files */
+ /* fput all the lower files */
fgen = atomic_read(&fileinfo->generation);
bstart = fbstart(file);
bend = fbend(file);
for (bindex = bstart; bindex <= bend; bindex++) {
- hidden_file = unionfs_lower_file_idx(file, bindex);
+ lower_file = unionfs_lower_file_idx(file, bindex);
- if (hidden_file) {
- fput(hidden_file);
+ if (lower_file) {
+ fput(lower_file);
unionfs_read_lock(sb);
branchput(sb, bindex);
unionfs_read_unlock(sb);
/* pass the ioctl to the lower fs */
static long do_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
{
- struct file *hidden_file;
+ struct file *lower_file;
int err;
- hidden_file = unionfs_lower_file(file);
+ lower_file = unionfs_lower_file(file);
- err = security_file_ioctl(hidden_file, cmd, arg);
+ err = security_file_ioctl(lower_file, cmd, arg);
if (err)
goto out;
err = -ENOTTY;
- if (!hidden_file || !hidden_file->f_op)
+ if (!lower_file || !lower_file->f_op)
goto out;
- if (hidden_file->f_op->unlocked_ioctl) {
- err = hidden_file->f_op->unlocked_ioctl(hidden_file, cmd, arg);
- } else if (hidden_file->f_op->ioctl) {
+ if (lower_file->f_op->unlocked_ioctl) {
+ err = lower_file->f_op->unlocked_ioctl(lower_file, cmd, arg);
+ } else if (lower_file->f_op->ioctl) {
lock_kernel();
- err = hidden_file->f_op->ioctl(hidden_file->f_dentry->d_inode,
- hidden_file, cmd, arg);
+ err = lower_file->f_op->ioctl(lower_file->f_dentry->d_inode,
+ lower_file, cmd, arg);
unlock_kernel();
}
fd_set branchlist;
int bstart = 0, bend = 0, bindex = 0;
int orig_bstart, orig_bend;
- struct dentry *dentry, *hidden_dentry;
+ struct dentry *dentry, *lower_dentry;
struct vfsmount *mnt;
dentry = file->f_dentry;
FD_ZERO(&branchlist);
for (bindex = bstart; bindex <= bend; bindex++) {
- hidden_dentry = unionfs_lower_dentry_idx(dentry, bindex);
- if (!hidden_dentry)
+ lower_dentry = unionfs_lower_dentry_idx(dentry, bindex);
+ if (!lower_dentry)
continue;
- if (hidden_dentry->d_inode)
+ if (lower_dentry->d_inode)
FD_SET(bindex, &branchlist);
/* purge any lower objects after partial_lookup */
if (bindex < orig_bstart || bindex > orig_bend) {
- dput(hidden_dentry);
+ dput(lower_dentry);
unionfs_set_lower_dentry_idx(dentry, bindex, NULL);
iput(unionfs_lower_inode_idx(dentry->d_inode, bindex));
unionfs_set_lower_inode_idx(dentry->d_inode, bindex,
int unionfs_flush(struct file *file, fl_owner_t id)
{
int err = 0;
- struct file *hidden_file = NULL;
+ struct file *lower_file = NULL;
struct dentry *dentry = file->f_dentry;
int bindex, bstart, bend;
bstart = fbstart(file);
bend = fbend(file);
for (bindex = bstart; bindex <= bend; bindex++) {
- hidden_file = unionfs_lower_file_idx(file, bindex);
+ lower_file = unionfs_lower_file_idx(file, bindex);
- if (hidden_file && hidden_file->f_op &&
- hidden_file->f_op->flush) {
- err = hidden_file->f_op->flush(hidden_file, id);
+ if (lower_file && lower_file->f_op &&
+ lower_file->f_op->flush) {
+ err = lower_file->f_op->flush(lower_file, id);
if (err)
goto out_lock;
#ifdef CONFIG_UNION_FS_XATTR
/* copyup all extended attrs for a given dentry */
-static int copyup_xattrs(struct dentry *old_hidden_dentry,
- struct dentry *new_hidden_dentry)
+static int copyup_xattrs(struct dentry *old_lower_dentry,
+ struct dentry *new_lower_dentry)
{
int err = 0;
ssize_t list_size = -1;
char *attr_value = NULL;
char *name_list_orig = NULL;
- list_size = vfs_listxattr(old_hidden_dentry, NULL, 0);
+ list_size = vfs_listxattr(old_lower_dentry, NULL, 0);
if (list_size <= 0) {
err = list_size;
err = PTR_ERR(name_list);
goto out;
}
- list_size = vfs_listxattr(old_hidden_dentry, name_list, list_size);
+ list_size = vfs_listxattr(old_lower_dentry, name_list, list_size);
attr_value = unionfs_xattr_alloc(XATTR_SIZE_MAX, XATTR_SIZE_MAX);
if (!attr_value || IS_ERR(attr_value)) {
err = PTR_ERR(name_list);
ssize_t size;
/* Lock here since vfs_getxattr doesn't lock for us */
- mutex_lock(&old_hidden_dentry->d_inode->i_mutex);
- size = vfs_getxattr(old_hidden_dentry, name_list,
+ mutex_lock(&old_lower_dentry->d_inode->i_mutex);
+ size = vfs_getxattr(old_lower_dentry, name_list,
attr_value, XATTR_SIZE_MAX);
- mutex_unlock(&old_hidden_dentry->d_inode->i_mutex);
+ mutex_unlock(&old_lower_dentry->d_inode->i_mutex);
if (size < 0) {
err = size;
goto out;
goto out;
}
/* Don't lock here since vfs_setxattr does it for us. */
- err = vfs_setxattr(new_hidden_dentry, name_list, attr_value,
+ err = vfs_setxattr(new_lower_dentry, name_list, attr_value,
size, 0);
if (err < 0)
/* Determine the mode based on the copyup flags, and the existing dentry. */
static int copyup_permissions(struct super_block *sb,
- struct dentry *old_hidden_dentry,
- struct dentry *new_hidden_dentry)
+ struct dentry *old_lower_dentry,
+ struct dentry *new_lower_dentry)
{
- struct inode *i = old_hidden_dentry->d_inode;
+ struct inode *i = old_lower_dentry->d_inode;
struct iattr newattrs;
int err;
ATTR_ATIME_SET | ATTR_MTIME_SET | ATTR_FORCE |
ATTR_GID | ATTR_UID | ATTR_MODE;
- err = notify_change(new_hidden_dentry, &newattrs);
+ err = notify_change(new_lower_dentry, &newattrs);
return err;
}
* if the object being copied up is a regular file, the file is only created,
* the contents have to be copied up separately
*/
-static int __copyup_ndentry(struct dentry *old_hidden_dentry,
- struct dentry *new_hidden_dentry,
- struct dentry *new_hidden_parent_dentry,
+static int __copyup_ndentry(struct dentry *old_lower_dentry,
+ struct dentry *new_lower_dentry,
+ struct dentry *new_lower_parent_dentry,
char *symbuf)
{
int err = 0;
- umode_t old_mode = old_hidden_dentry->d_inode->i_mode;
+ umode_t old_mode = old_lower_dentry->d_inode->i_mode;
struct sioq_args args;
if (S_ISDIR(old_mode)) {
- args.mkdir.parent = new_hidden_parent_dentry->d_inode;
- args.mkdir.dentry = new_hidden_dentry;
+ args.mkdir.parent = new_lower_parent_dentry->d_inode;
+ args.mkdir.dentry = new_lower_dentry;
args.mkdir.mode = old_mode;
run_sioq(__unionfs_mkdir, &args);
err = args.err;
} else if (S_ISLNK(old_mode)) {
- args.symlink.parent = new_hidden_parent_dentry->d_inode;
- args.symlink.dentry = new_hidden_dentry;
+ args.symlink.parent = new_lower_parent_dentry->d_inode;
+ args.symlink.dentry = new_lower_dentry;
args.symlink.symbuf = symbuf;
args.symlink.mode = old_mode;
err = args.err;
} else if (S_ISBLK(old_mode) || S_ISCHR(old_mode) ||
S_ISFIFO(old_mode) || S_ISSOCK(old_mode)) {
- args.mknod.parent = new_hidden_parent_dentry->d_inode;
- args.mknod.dentry = new_hidden_dentry;
+ args.mknod.parent = new_lower_parent_dentry->d_inode;
+ args.mknod.dentry = new_lower_dentry;
args.mknod.mode = old_mode;
- args.mknod.dev = old_hidden_dentry->d_inode->i_rdev;
+ args.mknod.dev = old_lower_dentry->d_inode->i_rdev;
run_sioq(__unionfs_mknod, &args);
err = args.err;
} else if (S_ISREG(old_mode)) {
- args.create.parent = new_hidden_parent_dentry->d_inode;
- args.create.dentry = new_hidden_dentry;
+ args.create.parent = new_lower_parent_dentry->d_inode;
+ args.create.dentry = new_lower_dentry;
args.create.mode = old_mode;
args.create.nd = NULL;
}
static int __copyup_reg_data(struct dentry *dentry,
- struct dentry *new_hidden_dentry, int new_bindex,
- struct dentry *old_hidden_dentry, int old_bindex,
+ struct dentry *new_lower_dentry, int new_bindex,
+ struct dentry *old_lower_dentry, int old_bindex,
struct file **copyup_file, loff_t len)
{
struct super_block *sb = dentry->d_sb;
branchget(sb, old_bindex);
unionfs_read_unlock(sb);
/* dentry_open calls dput and mntput if it returns an error */
- input_file = dentry_open(old_hidden_dentry,
+ input_file = dentry_open(old_lower_dentry,
unionfs_lower_mnt_idx(dentry, old_bindex),
O_RDONLY | O_LARGEFILE);
if (IS_ERR(input_file)) {
- dput(old_hidden_dentry);
+ dput(old_lower_dentry);
err = PTR_ERR(input_file);
goto out;
}
}
/* open new file */
- dget(new_hidden_dentry);
+ dget(new_lower_dentry);
output_mnt = unionfs_mntget(sb->s_root, new_bindex);
unionfs_read_lock(sb);
branchget(sb, new_bindex);
unionfs_read_unlock(sb);
- output_file = dentry_open(new_hidden_dentry, output_mnt,
+ output_file = dentry_open(new_lower_dentry, output_mnt,
O_WRONLY | O_LARGEFILE);
if (IS_ERR(output_file)) {
err = PTR_ERR(output_file);
if (!err)
err = output_file->f_op->fsync(output_file,
- new_hidden_dentry, 0);
+ new_lower_dentry, 0);
if (err)
goto out_close_out;
* dput the lower references for old and new dentry & clear a lower dentry
* pointer
*/
-static void __clear(struct dentry *dentry, struct dentry *old_hidden_dentry,
+static void __clear(struct dentry *dentry, struct dentry *old_lower_dentry,
int old_bstart, int old_bend,
- struct dentry *new_hidden_dentry, int new_bindex)
+ struct dentry *new_lower_dentry, int new_bindex)
{
- /* get rid of the hidden dentry and all its traces */
+ /* get rid of the lower dentry and all its traces */
unionfs_set_lower_dentry_idx(dentry, new_bindex, NULL);
set_dbstart(dentry, old_bstart);
set_dbend(dentry, old_bend);
- dput(new_hidden_dentry);
- dput(old_hidden_dentry);
+ dput(new_lower_dentry);
+ dput(old_lower_dentry);
}
/*
int new_bindex, const char *name, int namelen,
struct file **copyup_file, loff_t len)
{
- struct dentry *new_hidden_dentry;
- struct dentry *old_hidden_dentry = NULL;
+ struct dentry *new_lower_dentry;
+ struct dentry *old_lower_dentry = NULL;
struct super_block *sb;
int err = 0;
int old_bindex;
int old_bstart;
int old_bend;
- struct dentry *new_hidden_parent_dentry = NULL;
+ struct dentry *new_lower_parent_dentry = NULL;
mm_segment_t oldfs;
char *symbuf = NULL;
goto out;
/* Create the directory structure above this dentry. */
- new_hidden_dentry = create_parents(dir, dentry, name, new_bindex);
- if (IS_ERR(new_hidden_dentry)) {
- err = PTR_ERR(new_hidden_dentry);
+ new_lower_dentry = create_parents(dir, dentry, name, new_bindex);
+ if (IS_ERR(new_lower_dentry)) {
+ err = PTR_ERR(new_lower_dentry);
goto out;
}
- old_hidden_dentry = unionfs_lower_dentry_idx(dentry, old_bindex);
- /* we conditionally dput this old_hidden_dentry at end of function */
- dget(old_hidden_dentry);
+ old_lower_dentry = unionfs_lower_dentry_idx(dentry, old_bindex);
+ /* we conditionally dput this old_lower_dentry at end of function */
+ dget(old_lower_dentry);
/* For symlinks, we must read the link before we lock the directory. */
- if (S_ISLNK(old_hidden_dentry->d_inode->i_mode)) {
+ if (S_ISLNK(old_lower_dentry->d_inode->i_mode)) {
symbuf = kmalloc(PATH_MAX, GFP_KERNEL);
if (!symbuf) {
- __clear(dentry, old_hidden_dentry,
+ __clear(dentry, old_lower_dentry,
old_bstart, old_bend,
- new_hidden_dentry, new_bindex);
+ new_lower_dentry, new_bindex);
err = -ENOMEM;
goto out_free;
}
oldfs = get_fs();
set_fs(KERNEL_DS);
- err = old_hidden_dentry->d_inode->i_op->readlink(
- old_hidden_dentry,
+ err = old_lower_dentry->d_inode->i_op->readlink(
+ old_lower_dentry,
(char __user *)symbuf,
PATH_MAX);
set_fs(oldfs);
if (err) {
- __clear(dentry, old_hidden_dentry,
+ __clear(dentry, old_lower_dentry,
old_bstart, old_bend,
- new_hidden_dentry, new_bindex);
+ new_lower_dentry, new_bindex);
goto out_free;
}
symbuf[err] = '\0';
}
/* Now we lock the parent, and create the object in the new branch. */
- new_hidden_parent_dentry = lock_parent(new_hidden_dentry);
+ new_lower_parent_dentry = lock_parent(new_lower_dentry);
/* create the new inode */
- err = __copyup_ndentry(old_hidden_dentry, new_hidden_dentry,
- new_hidden_parent_dentry, symbuf);
+ err = __copyup_ndentry(old_lower_dentry, new_lower_dentry,
+ new_lower_parent_dentry, symbuf);
if (err) {
- __clear(dentry, old_hidden_dentry,
+ __clear(dentry, old_lower_dentry,
old_bstart, old_bend,
- new_hidden_dentry, new_bindex);
+ new_lower_dentry, new_bindex);
goto out_unlock;
}
/* We actually copyup the file here. */
- if (S_ISREG(old_hidden_dentry->d_inode->i_mode))
- err = __copyup_reg_data(dentry, new_hidden_dentry, new_bindex,
- old_hidden_dentry, old_bindex,
+ if (S_ISREG(old_lower_dentry->d_inode->i_mode))
+ err = __copyup_reg_data(dentry, new_lower_dentry, new_bindex,
+ old_lower_dentry, old_bindex,
copyup_file, len);
if (err)
goto out_unlink;
/* Set permissions. */
- if ((err = copyup_permissions(sb, old_hidden_dentry,
- new_hidden_dentry)))
+ if ((err = copyup_permissions(sb, old_lower_dentry,
+ new_lower_dentry)))
goto out_unlink;
#ifdef CONFIG_UNION_FS_XATTR
/* Selinux uses extended attributes for permissions. */
- if ((err = copyup_xattrs(old_hidden_dentry, new_hidden_dentry)))
+ if ((err = copyup_xattrs(old_lower_dentry, new_lower_dentry)))
goto out_unlink;
#endif /* CONFIG_UNION_FS_XATTR */
* quota, or something else happened so let's unlink; we don't
* really care about the return value of vfs_unlink
*/
- vfs_unlink(new_hidden_parent_dentry->d_inode, new_hidden_dentry);
+ vfs_unlink(new_lower_parent_dentry->d_inode, new_lower_dentry);
if (copyup_file) {
/* need to close the file */
*/
out_unlock:
- unlock_dir(new_hidden_parent_dentry);
+ unlock_dir(new_lower_parent_dentry);
out_free:
/*
- * If old_hidden_dentry was a directory, we need to dput it. If it
+ * If old_lower_dentry was a directory, we need to dput it. If it
* was a file, then it was already dput indirectly by other
* functions we call above which operate on regular files.
*/
- if (old_hidden_dentry && old_hidden_dentry->d_inode &&
- S_ISDIR(old_hidden_dentry->d_inode->i_mode))
- dput(old_hidden_dentry);
+ if (old_lower_dentry && old_lower_dentry->d_inode &&
+ S_ISDIR(old_lower_dentry->d_inode->i_mode))
+ dput(old_lower_dentry);
kfree(symbuf);
if (err)
* If we got here, then we copied up to an
* unlinked-open file, whose name is .unionfsXXXXX.
*/
- struct inode *inode = new_hidden_dentry->d_inode;
+ struct inode *inode = new_lower_dentry->d_inode;
atomic_inc(&inode->i_count);
unionfs_set_lower_inode_idx(dentry->d_inode,
ibstart(dentry->d_inode),
int err;
struct dentry *child_dentry;
struct dentry *parent_dentry;
- struct dentry *hidden_parent_dentry = NULL;
- struct dentry *hidden_dentry = NULL;
+ struct dentry *lower_parent_dentry = NULL;
+ struct dentry *lower_dentry = NULL;
const char *childname;
unsigned int childnamelen;
int nr_dentry;
verify_locked(dentry);
if ((err = is_robranch_super(dir->i_sb, bindex))) {
- hidden_dentry = ERR_PTR(err);
+ lower_dentry = ERR_PTR(err);
goto out;
}
old_bstart = dbstart(dentry);
old_bend = dbend(dentry);
- hidden_dentry = ERR_PTR(-ENOMEM);
+ lower_dentry = ERR_PTR(-ENOMEM);
/* There is no sense allocating any less than the minimum. */
nr_dentry = 1;
parent_dentry = child_dentry->d_parent;
unionfs_lock_dentry(parent_dentry);
- /* find out the hidden_parent_dentry in the given branch */
- hidden_parent_dentry =
+ /* find out the lower_parent_dentry in the given branch */
+ lower_parent_dentry =
unionfs_lower_dentry_idx(parent_dentry, bindex);
/* grow path table */
p = krealloc(path, nr_dentry * sizeof(struct dentry *),
GFP_KERNEL);
if (!p) {
- hidden_dentry = ERR_PTR(-ENOMEM);
+ lower_dentry = ERR_PTR(-ENOMEM);
goto out;
}
path = p;
/* store the child dentry */
path[count++] = child_dentry;
- } while (!hidden_parent_dentry);
+ } while (!lower_parent_dentry);
count--;
sb = dentry->d_sb;
* shorter than what would be a much longer while loop.
*/
begin:
- /* get hidden parent dir in the current branch */
- hidden_parent_dentry = unionfs_lower_dentry_idx(parent_dentry, bindex);
+ /* get lower parent dir in the current branch */
+ lower_parent_dentry = unionfs_lower_dentry_idx(parent_dentry, bindex);
unionfs_unlock_dentry(parent_dentry);
/* init the values to lookup */
if (child_dentry != dentry) {
/* lookup child in the underlying file system */
- hidden_dentry = lookup_one_len(childname, hidden_parent_dentry,
- childnamelen);
- if (IS_ERR(hidden_dentry))
+ lower_dentry = lookup_one_len(childname, lower_parent_dentry,
+ childnamelen);
+ if (IS_ERR(lower_dentry))
goto out;
} else {
/*
* Is the name a whiteout of the child name ? lookup the
* whiteout child in the underlying file system
*/
- hidden_dentry = lookup_one_len(name, hidden_parent_dentry,
- strlen(name));
- if (IS_ERR(hidden_dentry))
+ lower_dentry = lookup_one_len(name, lower_parent_dentry,
+ strlen(name));
+ if (IS_ERR(lower_dentry))
goto out;
/* Replace the current dentry (if any) with the new one */
dput(unionfs_lower_dentry_idx(dentry, bindex));
unionfs_set_lower_dentry_idx(dentry, bindex,
- hidden_dentry);
+ lower_dentry);
__cleanup_dentry(dentry, bindex, old_bstart, old_bend);
goto out;
}
- if (hidden_dentry->d_inode) {
+ if (lower_dentry->d_inode) {
/*
* since this already exists we dput to avoid
* multiple references on the same dentry
*/
- dput(hidden_dentry);
+ dput(lower_dentry);
} else {
struct sioq_args args;
/* it's a negative dentry, create a new dir */
- hidden_parent_dentry = lock_parent(hidden_dentry);
+ lower_parent_dentry = lock_parent(lower_dentry);
- args.mkdir.parent = hidden_parent_dentry->d_inode;
- args.mkdir.dentry = hidden_dentry;
+ args.mkdir.parent = lower_parent_dentry->d_inode;
+ args.mkdir.dentry = lower_dentry;
args.mkdir.mode = child_dentry->d_inode->i_mode;
run_sioq(__unionfs_mkdir, &args);
if (!err)
err = copyup_permissions(dir->i_sb, child_dentry,
- hidden_dentry);
- unlock_dir(hidden_parent_dentry);
+ lower_dentry);
+ unlock_dir(lower_parent_dentry);
if (err) {
- struct inode *inode = hidden_dentry->d_inode;
+ struct inode *inode = lower_dentry->d_inode;
/*
* If we get here, it means that we created a new
* dentry+inode, but copying permissions failed.
* Therefore, we should delete this inode and dput
* the dentry so as not to leave cruft behind.
*/
- if (hidden_dentry->d_op && hidden_dentry->d_op->d_iput)
- hidden_dentry->d_op->d_iput(hidden_dentry,
- inode);
+ if (lower_dentry->d_op && lower_dentry->d_op->d_iput)
+ lower_dentry->d_op->d_iput(lower_dentry,
+ inode);
else
iput(inode);
- hidden_dentry->d_inode = NULL;
- dput(hidden_dentry);
- hidden_dentry = ERR_PTR(err);
+ lower_dentry->d_inode = NULL;
+ dput(lower_dentry);
+ lower_dentry = ERR_PTR(err);
goto out;
}
}
- __set_inode(child_dentry, hidden_dentry, bindex);
- __set_dentry(child_dentry, hidden_dentry, bindex);
+ __set_inode(child_dentry, lower_dentry, bindex);
+ __set_dentry(child_dentry, lower_dentry, bindex);
parent_dentry = child_dentry;
child_dentry = path[--count];
goto begin;
out:
/* cleanup any leftover locks from the do/while loop above */
- if (IS_ERR(hidden_dentry))
+ if (IS_ERR(lower_dentry))
while (count)
unionfs_unlock_dentry(path[count--]);
kfree(path);
- return hidden_dentry;
+ return lower_dentry;
}
/* set lower mnt of dentry+parents to the first parent node that has an mnt */
*/
/* it's always useful to know what part of the code called us */
-#define PRINT_CALLER() \
-do { \
- if (!printed_caller) { \
- printk("PC:%s:%s:%d\n",fname,fxn,line); \
- printed_caller = 1; \
- } \
- } while (0)
+#define PRINT_CALLER() \
+ do { \
+ if (!printed_caller) { \
+ printk("PC:%s:%s:%d\n",fname,fxn,line); \
+ printed_caller = 1; \
+ } \
+ } while (0)
/*
* __unionfs_check_{inode,dentry,file} perform exhaustive sanity checking on
struct nameidata *nd)
{
int valid = 1; /* default is valid (1); invalid is 0. */
- struct dentry *hidden_dentry;
+ struct dentry *lower_dentry;
int bindex, bstart, bend;
int sbgen, dgen;
int positive = 0;
bstart = dbstart(dentry);
bend = dbend(dentry);
if (bstart >= 0) {
- struct dentry *hidden_dentry;
+ struct dentry *lower_dentry;
for (bindex = bstart; bindex <= bend; bindex++) {
- hidden_dentry =
+ lower_dentry =
unionfs_lower_dentry_idx(dentry,
bindex);
- dput(hidden_dentry);
+ dput(lower_dentry);
}
}
set_dbstart(dentry, -1);
bstart = ibstart(dentry->d_inode);
bend = ibend(dentry->d_inode);
if (bstart >= 0) {
- struct inode *hidden_inode;
+ struct inode *lower_inode;
for (bindex = bstart; bindex <= bend;
bindex++) {
- hidden_inode =
+ lower_inode =
unionfs_lower_inode_idx(
dentry->d_inode,
bindex);
- iput(hidden_inode);
+ iput(lower_inode);
}
}
kfree(UNIONFS_I(dentry->d_inode)->lower_inodes);
bend = dbend(dentry);
BUG_ON(bstart == -1);
for (bindex = bstart; bindex <= bend; bindex++) {
- hidden_dentry = unionfs_lower_dentry_idx(dentry, bindex);
- if (!hidden_dentry || !hidden_dentry->d_op
- || !hidden_dentry->d_op->d_revalidate)
+ lower_dentry = unionfs_lower_dentry_idx(dentry, bindex);
+ if (!lower_dentry || !lower_dentry->d_op
+ || !lower_dentry->d_op->d_revalidate)
continue;
- if (!hidden_dentry->d_op->d_revalidate(hidden_dentry,
- &lowernd))
+ if (!lower_dentry->d_op->d_revalidate(lower_dentry,
+ &lowernd))
valid = 0;
}
goto out;
} else if (dbstart(dentry) < 0) {
/* this is due to a failed lookup */
- printk(KERN_DEBUG "unionfs: dentry without hidden "
+ printk(KERN_DEBUG "unionfs: dentry without lower "
"dentries: %.*s",
dentry->d_name.len, dentry->d_name.name);
goto out_free;
}
- /* Release all the hidden dentries */
+ /* Release all the lower dentries */
bstart = dbstart(dentry);
bend = dbend(dentry);
for (bindex = bstart; bindex <= bend; bindex++) {
static int unionfs_readdir(struct file *file, void *dirent, filldir_t filldir)
{
int err = 0;
- struct file *hidden_file = NULL;
+ struct file *lower_file = NULL;
struct inode *inode = NULL;
struct unionfs_getdents_callback buf;
struct unionfs_dir_state *uds;
bend = fbend(file);
while (uds->bindex <= bend) {
- hidden_file = unionfs_lower_file_idx(file, uds->bindex);
- if (!hidden_file) {
+ lower_file = unionfs_lower_file_idx(file, uds->bindex);
+ if (!lower_file) {
uds->bindex++;
uds->dirpos = 0;
continue;
buf.sb = inode->i_sb;
/* Read starting from where we last left off. */
- offset = vfs_llseek(hidden_file, uds->dirpos, SEEK_SET);
+ offset = vfs_llseek(lower_file, uds->dirpos, SEEK_SET);
if (offset < 0) {
err = offset;
goto out;
}
- err = vfs_readdir(hidden_file, unionfs_filldir, &buf);
+ err = vfs_readdir(lower_file, unionfs_filldir, &buf);
/* Save the position for when we continue. */
- offset = vfs_llseek(hidden_file, 0, SEEK_CUR);
+ offset = vfs_llseek(lower_file, 0, SEEK_CUR);
if (offset < 0) {
err = offset;
goto out;
uds->dirpos = offset;
/* Copy the atime. */
- fsstack_copy_attr_atime(inode, hidden_file->f_dentry->d_inode);
+ fsstack_copy_attr_atime(inode, lower_file->f_dentry->d_inode);
if (err < 0)
goto out;
/*
* Delete all of the whiteouts in a given directory for rmdir.
*
- * hidden directory inode should be locked
+ * lower directory inode should be locked
*/
int do_delete_whiteouts(struct dentry *dentry, int bindex,
struct unionfs_dir_state *namelist)
{
int err = 0;
- struct dentry *hidden_dir_dentry = NULL;
- struct dentry *hidden_dentry;
+ struct dentry *lower_dir_dentry = NULL;
+ struct dentry *lower_dentry;
char *name = NULL, *p;
- struct inode *hidden_dir;
+ struct inode *lower_dir;
int i;
struct list_head *pos;
struct filldir_node *cursor;
- /* Find out hidden parent dentry */
- hidden_dir_dentry = unionfs_lower_dentry_idx(dentry, bindex);
- BUG_ON(!S_ISDIR(hidden_dir_dentry->d_inode->i_mode));
- hidden_dir = hidden_dir_dentry->d_inode;
- BUG_ON(!S_ISDIR(hidden_dir->i_mode));
+ /* Find out lower parent dentry */
+ lower_dir_dentry = unionfs_lower_dentry_idx(dentry, bindex);
+ BUG_ON(!S_ISDIR(lower_dir_dentry->d_inode->i_mode));
+ lower_dir = lower_dir_dentry->d_inode;
+ BUG_ON(!S_ISDIR(lower_dir->i_mode));
err = -ENOMEM;
name = __getname();
continue;
strcpy(p, cursor->name);
- hidden_dentry =
- lookup_one_len(name, hidden_dir_dentry,
+ lower_dentry =
+ lookup_one_len(name, lower_dir_dentry,
cursor->namelen +
UNIONFS_WHLEN);
- if (IS_ERR(hidden_dentry)) {
- err = PTR_ERR(hidden_dentry);
+ if (IS_ERR(lower_dentry)) {
+ err = PTR_ERR(lower_dentry);
break;
}
- if (hidden_dentry->d_inode)
- err = vfs_unlink(hidden_dir, hidden_dentry);
- dput(hidden_dentry);
+ if (lower_dentry->d_inode)
+ err = vfs_unlink(lower_dir, lower_dentry);
+ dput(lower_dentry);
if (err)
break;
}
__putname(name);
/* After all of the removals, we should copy the attributes once. */
- fsstack_copy_attr_times(dentry->d_inode, hidden_dir_dentry->d_inode);
+ fsstack_copy_attr_times(dentry->d_inode, lower_dir_dentry->d_inode);
out:
return err;
{
int err;
struct super_block *sb;
- struct dentry *hidden_dir_dentry;
- struct inode *hidden_dir;
+ struct dentry *lower_dir_dentry;
+ struct inode *lower_dir;
struct sioq_args args;
sb = dentry->d_sb;
if (err)
goto out;
- hidden_dir_dentry = unionfs_lower_dentry_idx(dentry, bindex);
- BUG_ON(!S_ISDIR(hidden_dir_dentry->d_inode->i_mode));
- hidden_dir = hidden_dir_dentry->d_inode;
- BUG_ON(!S_ISDIR(hidden_dir->i_mode));
+ lower_dir_dentry = unionfs_lower_dentry_idx(dentry, bindex);
+ BUG_ON(!S_ISDIR(lower_dir_dentry->d_inode->i_mode));
+ lower_dir = lower_dir_dentry->d_inode;
+ BUG_ON(!S_ISDIR(lower_dir->i_mode));
- mutex_lock(&hidden_dir->i_mutex);
- if (!permission(hidden_dir, MAY_WRITE | MAY_EXEC, NULL))
+ mutex_lock(&lower_dir->i_mutex);
+ if (!permission(lower_dir, MAY_WRITE | MAY_EXEC, NULL))
err = do_delete_whiteouts(dentry, bindex, namelist);
else {
args.deletewh.namelist = namelist;
run_sioq(__delete_whiteouts, &args);
err = args.err;
}
- mutex_unlock(&hidden_dir->i_mutex);
+ mutex_unlock(&lower_dir->i_mutex);
out:
unionfs_read_unlock(sb);
int check_empty(struct dentry *dentry, struct unionfs_dir_state **namelist)
{
int err = 0;
- struct dentry *hidden_dentry = NULL;
+ struct dentry *lower_dentry = NULL;
struct super_block *sb;
- struct file *hidden_file;
+ struct file *lower_file;
struct unionfs_rdutil_callback *buf = NULL;
int bindex, bstart, bend, bopaque;
goto out;
}
- /* Process the hidden directories with rdutil_callback as a filldir. */
+ /* Process the lower directories with rdutil_callback as a filldir. */
for (bindex = bstart; bindex <= bend; bindex++) {
- hidden_dentry = unionfs_lower_dentry_idx(dentry, bindex);
- if (!hidden_dentry)
+ lower_dentry = unionfs_lower_dentry_idx(dentry, bindex);
+ if (!lower_dentry)
continue;
- if (!hidden_dentry->d_inode)
+ if (!lower_dentry->d_inode)
continue;
- if (!S_ISDIR(hidden_dentry->d_inode->i_mode))
+ if (!S_ISDIR(lower_dentry->d_inode->i_mode))
continue;
- dget(hidden_dentry);
+ dget(lower_dentry);
unionfs_mntget(dentry, bindex);
unionfs_read_lock(sb);
branchget(sb, bindex);
unionfs_read_unlock(sb);
- hidden_file =
- dentry_open(hidden_dentry,
+ lower_file =
+ dentry_open(lower_dentry,
unionfs_lower_mnt_idx(dentry, bindex),
O_RDONLY);
- if (IS_ERR(hidden_file)) {
- err = PTR_ERR(hidden_file);
- dput(hidden_dentry);
+ if (IS_ERR(lower_file)) {
+ err = PTR_ERR(lower_file);
+ dput(lower_dentry);
unionfs_read_lock(sb);
branchput(sb, bindex);
unionfs_read_unlock(sb);
do {
buf->filldir_called = 0;
buf->rdstate->bindex = bindex;
- err = vfs_readdir(hidden_file,
+ err = vfs_readdir(lower_file,
readdir_util_callback, buf);
if (buf->err)
err = buf->err;
} while ((err >= 0) && buf->filldir_called);
- /* fput calls dput for hidden_dentry */
- fput(hidden_file);
+ /* fput calls dput for lower_dentry */
+ fput(lower_file);
unionfs_read_lock(sb);
branchput(sb, bindex);
unionfs_read_unlock(sb);
/* Superblock to lower superblock. */
static inline struct super_block *unionfs_lower_super(
- const struct super_block *sb)
+ const struct super_block *sb)
{
return UNIONFS_SB(sb)->data[sbstart(sb)].sb;
}
static inline struct super_block *unionfs_lower_super_idx(
- const struct super_block *sb,
- int index)
+ const struct super_block *sb,
+ int index)
{
return UNIONFS_SB(sb)->data[index].sb;
}
}
static inline struct dentry *unionfs_lower_dentry_idx(
- const struct dentry *dent,
- int index)
+ const struct dentry *dent,
+ int index)
{
return UNIONFS_D(dent)->lower_paths[index].dentry;
}
}
static inline struct vfsmount *unionfs_lower_mnt_idx(
- const struct dentry *dent,
- int index)
+ const struct dentry *dent,
+ int index)
{
return UNIONFS_D(dent)->lower_paths[index].mnt;
}
int mode, struct nameidata *nd)
{
int err = 0;
- struct dentry *hidden_dentry = NULL;
+ struct dentry *lower_dentry = NULL;
struct dentry *wh_dentry = NULL;
- struct dentry *new_hidden_dentry;
- struct dentry *hidden_parent_dentry = NULL;
+ struct dentry *new_lower_dentry;
+ struct dentry *lower_parent_dentry = NULL;
int bindex = 0, bstart;
char *name = NULL;
int valid = 0;
/* We start out in the leftmost branch. */
bstart = dbstart(dentry);
- hidden_dentry = unionfs_lower_dentry(dentry);
+ lower_dentry = unionfs_lower_dentry(dentry);
/*
* check if whiteout exists in this branch, i.e. lookup .wh.foo
goto out;
}
- wh_dentry = lookup_one_len(name, hidden_dentry->d_parent,
+ wh_dentry = lookup_one_len(name, lower_dentry->d_parent,
dentry->d_name.len + UNIONFS_WHLEN);
if (IS_ERR(wh_dentry)) {
err = PTR_ERR(wh_dentry);
* First truncate it and then rename it to foo (hence having
* the same overall effect as a normal create.
*/
- struct dentry *hidden_dir_dentry;
+ struct dentry *lower_dir_dentry;
struct iattr newattrs;
mutex_lock(&wh_dentry->d_inode->i_mutex);
"failed: %d, ignoring..\n",
__FILE__, __LINE__, err);
- new_hidden_dentry = unionfs_lower_dentry(dentry);
- dget(new_hidden_dentry);
+ new_lower_dentry = unionfs_lower_dentry(dentry);
+ dget(new_lower_dentry);
- hidden_dir_dentry = dget_parent(wh_dentry);
- lock_rename(hidden_dir_dentry, hidden_dir_dentry);
+ lower_dir_dentry = dget_parent(wh_dentry);
+ lock_rename(lower_dir_dentry, lower_dir_dentry);
if (!(err = is_robranch_super(dentry->d_sb, bstart))) {
- err = vfs_rename(hidden_dir_dentry->d_inode,
+ err = vfs_rename(lower_dir_dentry->d_inode,
wh_dentry,
- hidden_dir_dentry->d_inode,
- new_hidden_dentry);
+ lower_dir_dentry->d_inode,
+ new_lower_dentry);
}
if (!err) {
fsstack_copy_attr_times(parent,
- new_hidden_dentry->d_parent->
+ new_lower_dentry->d_parent->
d_inode);
fsstack_copy_inode_size(parent,
- new_hidden_dentry->d_parent->
+ new_lower_dentry->d_parent->
d_inode);
parent->i_nlink = unionfs_get_nlinks(parent);
}
- unlock_rename(hidden_dir_dentry, hidden_dir_dentry);
- dput(hidden_dir_dentry);
+ unlock_rename(lower_dir_dentry, lower_dir_dentry);
+ dput(lower_dir_dentry);
- dput(new_hidden_dentry);
+ dput(new_lower_dentry);
if (err) {
/* exit if the error returned was NOT -EROFS */
}
for (bindex = bstart; bindex >= 0; bindex--) {
- hidden_dentry = unionfs_lower_dentry_idx(dentry, bindex);
- if (!hidden_dentry) {
+ lower_dentry = unionfs_lower_dentry_idx(dentry, bindex);
+ if (!lower_dentry) {
/*
- * if hidden_dentry is NULL, create the entire
+ * if lower_dentry is NULL, create the entire
* dentry directory structure in branch 'bindex'.
- * hidden_dentry will NOT be null when bindex == bstart
+ * lower_dentry will NOT be null when bindex == bstart
* because lookup passed as a negative unionfs dentry
* pointing to a lone negative underlying dentry.
*/
- hidden_dentry = create_parents(parent, dentry,
- dentry->d_name.name,
- bindex);
- if (!hidden_dentry || IS_ERR(hidden_dentry)) {
- if (IS_ERR(hidden_dentry))
- err = PTR_ERR(hidden_dentry);
+ lower_dentry = create_parents(parent, dentry,
+ dentry->d_name.name,
+ bindex);
+ if (!lower_dentry || IS_ERR(lower_dentry)) {
+ if (IS_ERR(lower_dentry))
+ err = PTR_ERR(lower_dentry);
continue;
}
}
- hidden_parent_dentry = lock_parent(hidden_dentry);
- if (IS_ERR(hidden_parent_dentry)) {
- err = PTR_ERR(hidden_parent_dentry);
+ lower_parent_dentry = lock_parent(lower_dentry);
+ if (IS_ERR(lower_parent_dentry)) {
+ err = PTR_ERR(lower_parent_dentry);
goto out;
}
/* We shouldn't create things in a read-only branch. */
if (!(err = is_robranch_super(dentry->d_sb, bindex)))
- err = vfs_create(hidden_parent_dentry->d_inode,
- hidden_dentry, mode, nd);
+ err = vfs_create(lower_parent_dentry->d_inode,
+ lower_dentry, mode, nd);
- if (err || !hidden_dentry->d_inode) {
- unlock_dir(hidden_parent_dentry);
+ if (err || !lower_dentry->d_inode) {
+ unlock_dir(lower_parent_dentry);
/* break out of for loop if the error wasn't -EROFS */
if (!IS_COPYUP_ERR(err))
parent->i_sb, 0));
if (!err) {
fsstack_copy_attr_times(parent,
- hidden_parent_dentry->
+ lower_parent_dentry->
d_inode);
fsstack_copy_inode_size(parent,
- hidden_parent_dentry->
+ lower_parent_dentry->
d_inode);
/* update no. of links on parent directory */
parent->i_nlink = unionfs_get_nlinks(parent);
}
- unlock_dir(hidden_parent_dentry);
+ unlock_dir(lower_parent_dentry);
break;
}
}
struct dentry *new_dentry)
{
int err = 0;
- struct dentry *hidden_old_dentry = NULL;
- struct dentry *hidden_new_dentry = NULL;
- struct dentry *hidden_dir_dentry = NULL;
+ struct dentry *lower_old_dentry = NULL;
+ struct dentry *lower_new_dentry = NULL;
+ struct dentry *lower_dir_dentry = NULL;
struct dentry *whiteout_dentry;
char *name = NULL;
goto out;
}
- hidden_new_dentry = unionfs_lower_dentry(new_dentry);
+ lower_new_dentry = unionfs_lower_dentry(new_dentry);
/*
* check if whiteout exists in the branch of new dentry, i.e. lookup
goto out;
}
- whiteout_dentry = lookup_one_len(name, hidden_new_dentry->d_parent,
+ whiteout_dentry = lookup_one_len(name, lower_new_dentry->d_parent,
new_dentry->d_name.len +
UNIONFS_WHLEN);
if (IS_ERR(whiteout_dentry)) {
whiteout_dentry = NULL;
} else {
/* found a .wh.foo entry, unlink it and then call vfs_link() */
- hidden_dir_dentry = lock_parent(whiteout_dentry);
+ lower_dir_dentry = lock_parent(whiteout_dentry);
err = is_robranch_super(new_dentry->d_sb, dbstart(new_dentry));
if (!err)
- err = vfs_unlink(hidden_dir_dentry->d_inode,
+ err = vfs_unlink(lower_dir_dentry->d_inode,
whiteout_dentry);
- fsstack_copy_attr_times(dir, hidden_dir_dentry->d_inode);
+ fsstack_copy_attr_times(dir, lower_dir_dentry->d_inode);
dir->i_nlink = unionfs_get_nlinks(dir);
- unlock_dir(hidden_dir_dentry);
- hidden_dir_dentry = NULL;
+ unlock_dir(lower_dir_dentry);
+ lower_dir_dentry = NULL;
dput(whiteout_dentry);
if (err)
goto out;
}
if (dbstart(old_dentry) != dbstart(new_dentry)) {
- hidden_new_dentry = create_parents(dir, new_dentry,
- new_dentry->d_name.name,
- dbstart(old_dentry));
- err = PTR_ERR(hidden_new_dentry);
+ lower_new_dentry = create_parents(dir, new_dentry,
+ new_dentry->d_name.name,
+ dbstart(old_dentry));
+ err = PTR_ERR(lower_new_dentry);
if (IS_COPYUP_ERR(err))
goto docopyup;
- if (!hidden_new_dentry || IS_ERR(hidden_new_dentry))
+ if (!lower_new_dentry || IS_ERR(lower_new_dentry))
goto out;
}
- hidden_new_dentry = unionfs_lower_dentry(new_dentry);
- hidden_old_dentry = unionfs_lower_dentry(old_dentry);
+ lower_new_dentry = unionfs_lower_dentry(new_dentry);
+ lower_old_dentry = unionfs_lower_dentry(old_dentry);
BUG_ON(dbstart(old_dentry) != dbstart(new_dentry));
- hidden_dir_dentry = lock_parent(hidden_new_dentry);
+ lower_dir_dentry = lock_parent(lower_new_dentry);
if (!(err = is_robranch(old_dentry)))
- err = vfs_link(hidden_old_dentry, hidden_dir_dentry->d_inode,
- hidden_new_dentry);
- unlock_dir(hidden_dir_dentry);
+ err = vfs_link(lower_old_dentry, lower_dir_dentry->d_inode,
+ lower_new_dentry);
+ unlock_dir(lower_dir_dentry);
docopyup:
if (IS_COPYUP_ERR(err)) {
old_dentry->d_name.len, NULL,
old_dentry->d_inode->i_size);
if (!err) {
- hidden_new_dentry =
+ lower_new_dentry =
create_parents(dir, new_dentry,
new_dentry->d_name.name,
bindex);
- hidden_old_dentry =
+ lower_old_dentry =
unionfs_lower_dentry(old_dentry);
- hidden_dir_dentry =
- lock_parent(hidden_new_dentry);
+ lower_dir_dentry =
+ lock_parent(lower_new_dentry);
/* do vfs_link */
- err = vfs_link(hidden_old_dentry,
- hidden_dir_dentry->d_inode,
- hidden_new_dentry);
- unlock_dir(hidden_dir_dentry);
+ err = vfs_link(lower_old_dentry,
+ lower_dir_dentry->d_inode,
+ lower_new_dentry);
+ unlock_dir(lower_dir_dentry);
goto check_link;
}
}
}
check_link:
- if (err || !hidden_new_dentry->d_inode)
+ if (err || !lower_new_dentry->d_inode)
goto out;
/* Its a hard link, so use the same inode */
new_dentry->d_inode = igrab(old_dentry->d_inode);
d_instantiate(new_dentry, new_dentry->d_inode);
- fsstack_copy_attr_all(dir, hidden_new_dentry->d_parent->d_inode,
+ fsstack_copy_attr_all(dir, lower_new_dentry->d_parent->d_inode,
unionfs_get_nlinks);
- fsstack_copy_inode_size(dir, hidden_new_dentry->d_parent->d_inode);
+ fsstack_copy_inode_size(dir, lower_new_dentry->d_parent->d_inode);
/* propagate number of hard-links */
old_dentry->d_inode->i_nlink = unionfs_get_nlinks(old_dentry->d_inode);
const char *symname)
{
int err = 0;
- struct dentry *hidden_dentry = NULL;
+ struct dentry *lower_dentry = NULL;
struct dentry *whiteout_dentry = NULL;
- struct dentry *hidden_dir_dentry = NULL;
+ struct dentry *lower_dir_dentry = NULL;
umode_t mode;
int bindex = 0, bstart;
char *name = NULL;
/* We start out in the leftmost branch. */
bstart = dbstart(dentry);
- hidden_dentry = unionfs_lower_dentry(dentry);
+ lower_dentry = unionfs_lower_dentry(dentry);
/*
* check if whiteout exists in this branch, i.e. lookup .wh.foo
}
whiteout_dentry =
- lookup_one_len(name, hidden_dentry->d_parent,
+ lookup_one_len(name, lower_dentry->d_parent,
dentry->d_name.len + UNIONFS_WHLEN);
if (IS_ERR(whiteout_dentry)) {
err = PTR_ERR(whiteout_dentry);
* found a .wh.foo entry, unlink it and then call
* vfs_symlink().
*/
- hidden_dir_dentry = lock_parent(whiteout_dentry);
+ lower_dir_dentry = lock_parent(whiteout_dentry);
if (!(err = is_robranch_super(dentry->d_sb, bstart)))
- err = vfs_unlink(hidden_dir_dentry->d_inode,
+ err = vfs_unlink(lower_dir_dentry->d_inode,
whiteout_dentry);
dput(whiteout_dentry);
- fsstack_copy_attr_times(dir, hidden_dir_dentry->d_inode);
+ fsstack_copy_attr_times(dir, lower_dir_dentry->d_inode);
/* propagate number of hard-links */
dir->i_nlink = unionfs_get_nlinks(dir);
- unlock_dir(hidden_dir_dentry);
+ unlock_dir(lower_dir_dentry);
if (err) {
/* exit if the error returned was NOT -EROFS */
* with possible recursive directory creation
*/
for (bindex = bstart; bindex >= 0; bindex--) {
- hidden_dentry = unionfs_lower_dentry_idx(dentry, bindex);
- if (!hidden_dentry) {
+ lower_dentry = unionfs_lower_dentry_idx(dentry, bindex);
+ if (!lower_dentry) {
/*
- * if hidden_dentry is NULL, create the entire
+ * if lower_dentry is NULL, create the entire
* dentry directory structure in branch 'bindex'.
- * hidden_dentry will NOT be null when bindex ==
+ * lower_dentry will NOT be null when bindex ==
* bstart because lookup passed as a negative
* unionfs dentry pointing to a lone negative
* underlying dentry
*/
- hidden_dentry = create_parents(dir, dentry,
- dentry->d_name.name,
- bindex);
- if (!hidden_dentry || IS_ERR(hidden_dentry)) {
- if (IS_ERR(hidden_dentry))
- err = PTR_ERR(hidden_dentry);
-
- printk(KERN_DEBUG "unionfs: hidden dentry "
+ lower_dentry = create_parents(dir, dentry,
+ dentry->d_name.name,
+ bindex);
+ if (!lower_dentry || IS_ERR(lower_dentry)) {
+ if (IS_ERR(lower_dentry))
+ err = PTR_ERR(lower_dentry);
+
+ printk(KERN_DEBUG "unionfs: lower dentry "
"NULL (or error) for bindex = %d\n",
bindex);
continue;
}
}
- hidden_dir_dentry = lock_parent(hidden_dentry);
+ lower_dir_dentry = lock_parent(lower_dentry);
if (!(err = is_robranch_super(dentry->d_sb, bindex))) {
mode = S_IALLUGO;
err =
- vfs_symlink(hidden_dir_dentry->d_inode,
- hidden_dentry, symname, mode);
+ vfs_symlink(lower_dir_dentry->d_inode,
+ lower_dentry, symname, mode);
}
- unlock_dir(hidden_dir_dentry);
+ unlock_dir(lower_dir_dentry);
- if (err || !hidden_dentry->d_inode) {
+ if (err || !lower_dentry->d_inode) {
/*
* break out of for loop if error returned was NOT
* -EROFS.
dir->i_sb, 0));
if (!err) {
fsstack_copy_attr_times(dir,
- hidden_dir_dentry->
+ lower_dir_dentry->
d_inode);
fsstack_copy_inode_size(dir,
- hidden_dir_dentry->
+ lower_dir_dentry->
d_inode);
/*
* update number of links on parent
static int unionfs_mkdir(struct inode *parent, struct dentry *dentry, int mode)
{
int err = 0;
- struct dentry *hidden_dentry = NULL, *whiteout_dentry = NULL;
- struct dentry *hidden_parent_dentry = NULL;
+ struct dentry *lower_dentry = NULL, *whiteout_dentry = NULL;
+ struct dentry *lower_parent_dentry = NULL;
int bindex = 0, bstart;
char *name = NULL;
int whiteout_unlinked = 0;
bstart = dbstart(dentry);
- hidden_dentry = unionfs_lower_dentry(dentry);
+ lower_dentry = unionfs_lower_dentry(dentry);
/*
* check if whiteout exists in this branch, i.e. lookup .wh.foo
goto out;
}
- whiteout_dentry = lookup_one_len(name, hidden_dentry->d_parent,
+ whiteout_dentry = lookup_one_len(name, lower_dentry->d_parent,
dentry->d_name.len + UNIONFS_WHLEN);
if (IS_ERR(whiteout_dentry)) {
err = PTR_ERR(whiteout_dentry);
dput(whiteout_dentry);
whiteout_dentry = NULL;
} else {
- hidden_parent_dentry = lock_parent(whiteout_dentry);
+ lower_parent_dentry = lock_parent(whiteout_dentry);
/* found a.wh.foo entry, remove it then do vfs_mkdir */
if (!(err = is_robranch_super(dentry->d_sb, bstart))) {
- args.unlink.parent = hidden_parent_dentry->d_inode;
+ args.unlink.parent = lower_parent_dentry->d_inode;
args.unlink.dentry = whiteout_dentry;
run_sioq(__unionfs_unlink, &args);
err = args.err;
}
dput(whiteout_dentry);
- unlock_dir(hidden_parent_dentry);
+ unlock_dir(lower_parent_dentry);
if (err) {
/* exit if the error returned was NOT -EROFS */
if (is_robranch_super(dentry->d_sb, bindex))
continue;
- hidden_dentry = unionfs_lower_dentry_idx(dentry, bindex);
- if (!hidden_dentry) {
- hidden_dentry = create_parents(parent, dentry,
- dentry->d_name.name,
- bindex);
- if (!hidden_dentry || IS_ERR(hidden_dentry)) {
- printk(KERN_DEBUG "unionfs: hidden dentry "
+ lower_dentry = unionfs_lower_dentry_idx(dentry, bindex);
+ if (!lower_dentry) {
+ lower_dentry = create_parents(parent, dentry,
+ dentry->d_name.name,
+ bindex);
+ if (!lower_dentry || IS_ERR(lower_dentry)) {
+ printk(KERN_DEBUG "unionfs: lower dentry "
" NULL for bindex = %d\n", bindex);
continue;
}
}
- hidden_parent_dentry = lock_parent(hidden_dentry);
+ lower_parent_dentry = lock_parent(lower_dentry);
- if (IS_ERR(hidden_parent_dentry)) {
- err = PTR_ERR(hidden_parent_dentry);
+ if (IS_ERR(lower_parent_dentry)) {
+ err = PTR_ERR(lower_parent_dentry);
goto out;
}
- err = vfs_mkdir(hidden_parent_dentry->d_inode, hidden_dentry,
+ err = vfs_mkdir(lower_parent_dentry->d_inode, lower_dentry,
mode);
- unlock_dir(hidden_parent_dentry);
+ unlock_dir(lower_parent_dentry);
/* did the mkdir succeed? */
if (err)
err = PTR_ERR(unionfs_interpose(dentry, parent->i_sb, 0));
if (!err) {
fsstack_copy_attr_times(parent,
- hidden_parent_dentry->d_inode);
+ lower_parent_dentry->d_inode);
fsstack_copy_inode_size(parent,
- hidden_parent_dentry->d_inode);
+ lower_parent_dentry->d_inode);
/* update number of links on parent directory */
parent->i_nlink = unionfs_get_nlinks(parent);
dev_t dev)
{
int err = 0;
- struct dentry *hidden_dentry = NULL, *whiteout_dentry = NULL;
- struct dentry *hidden_parent_dentry = NULL;
+ struct dentry *lower_dentry = NULL, *whiteout_dentry = NULL;
+ struct dentry *lower_parent_dentry = NULL;
int bindex = 0, bstart;
char *name = NULL;
int whiteout_unlinked = 0;
bstart = dbstart(dentry);
- hidden_dentry = unionfs_lower_dentry(dentry);
+ lower_dentry = unionfs_lower_dentry(dentry);
/*
* check if whiteout exists in this branch, i.e. lookup .wh.foo
goto out;
}
- whiteout_dentry = lookup_one_len(name, hidden_dentry->d_parent,
+ whiteout_dentry = lookup_one_len(name, lower_dentry->d_parent,
dentry->d_name.len + UNIONFS_WHLEN);
if (IS_ERR(whiteout_dentry)) {
err = PTR_ERR(whiteout_dentry);
whiteout_dentry = NULL;
} else {
/* found .wh.foo, unlink it */
- hidden_parent_dentry = lock_parent(whiteout_dentry);
+ lower_parent_dentry = lock_parent(whiteout_dentry);
/* found a.wh.foo entry, remove it then do vfs_mkdir */
if (!(err = is_robranch_super(dentry->d_sb, bstart)))
- err = vfs_unlink(hidden_parent_dentry->d_inode,
+ err = vfs_unlink(lower_parent_dentry->d_inode,
whiteout_dentry);
dput(whiteout_dentry);
- unlock_dir(hidden_parent_dentry);
+ unlock_dir(lower_parent_dentry);
if (err) {
if (!IS_COPYUP_ERR(err))
if (is_robranch_super(dentry->d_sb, bindex))
continue;
- hidden_dentry = unionfs_lower_dentry_idx(dentry, bindex);
- if (!hidden_dentry) {
- hidden_dentry = create_parents(dir, dentry,
- dentry->d_name.name,
- bindex);
- if (IS_ERR(hidden_dentry)) {
+ lower_dentry = unionfs_lower_dentry_idx(dentry, bindex);
+ if (!lower_dentry) {
+ lower_dentry = create_parents(dir, dentry,
+ dentry->d_name.name,
+ bindex);
+ if (IS_ERR(lower_dentry)) {
printk(KERN_DEBUG "unionfs: failed to create "
"parents on %d, err = %ld\n",
- bindex, PTR_ERR(hidden_dentry));
+ bindex, PTR_ERR(lower_dentry));
continue;
}
}
- hidden_parent_dentry = lock_parent(hidden_dentry);
- if (IS_ERR(hidden_parent_dentry)) {
- err = PTR_ERR(hidden_parent_dentry);
+ lower_parent_dentry = lock_parent(lower_dentry);
+ if (IS_ERR(lower_parent_dentry)) {
+ err = PTR_ERR(lower_parent_dentry);
goto out;
}
- err = vfs_mknod(hidden_parent_dentry->d_inode,
- hidden_dentry, mode, dev);
+ err = vfs_mknod(lower_parent_dentry->d_inode,
+ lower_dentry, mode, dev);
if (err) {
- unlock_dir(hidden_parent_dentry);
+ unlock_dir(lower_parent_dentry);
break;
}
err = PTR_ERR(unionfs_interpose(dentry, dir->i_sb, 0));
if (!err) {
fsstack_copy_attr_times(dir,
- hidden_parent_dentry->d_inode);
+ lower_parent_dentry->d_inode);
fsstack_copy_inode_size(dir,
- hidden_parent_dentry->d_inode);
+ lower_parent_dentry->d_inode);
/* update number of links on parent directory */
dir->i_nlink = unionfs_get_nlinks(dir);
}
- unlock_dir(hidden_parent_dentry);
+ unlock_dir(lower_parent_dentry);
break;
}
int bufsiz)
{
int err;
- struct dentry *hidden_dentry;
+ struct dentry *lower_dentry;
unionfs_lock_dentry(dentry);
goto out;
}
- hidden_dentry = unionfs_lower_dentry(dentry);
+ lower_dentry = unionfs_lower_dentry(dentry);
- if (!hidden_dentry->d_inode->i_op ||
- !hidden_dentry->d_inode->i_op->readlink) {
+ if (!lower_dentry->d_inode->i_op ||
+ !lower_dentry->d_inode->i_op->readlink) {
err = -EINVAL;
goto out;
}
- err = hidden_dentry->d_inode->i_op->readlink(hidden_dentry,
- buf, bufsiz);
+ err = lower_dentry->d_inode->i_op->readlink(lower_dentry,
+ buf, bufsiz);
if (err > 0)
fsstack_copy_attr_atime(dentry->d_inode,
- hidden_dentry->d_inode);
+ lower_dentry->d_inode);
out:
unionfs_unlock_dentry(dentry);
static int unionfs_permission(struct inode *inode, int mask,
struct nameidata *nd)
{
- struct inode *hidden_inode = NULL;
+ struct inode *lower_inode = NULL;
int err = 0;
int bindex, bstart, bend;
const int is_file = !S_ISDIR(inode->i_mode);
}
for (bindex = bstart; bindex <= bend; bindex++) {
- hidden_inode = unionfs_lower_inode_idx(inode, bindex);
- if (!hidden_inode)
+ lower_inode = unionfs_lower_inode_idx(inode, bindex);
+ if (!lower_inode)
continue;
/*
* we don't have to check for files, if we are checking for
* directories.
*/
- if (!is_file && !S_ISDIR(hidden_inode->i_mode))
+ if (!is_file && !S_ISDIR(lower_inode->i_mode))
continue;
/*
* We use our own special version of permission, such that
* only the first branch returns -EROFS.
*/
- err = inode_permission(hidden_inode, mask, nd, bindex);
+ err = inode_permission(lower_inode, mask, nd, bindex);
/*
* The permissions are an intersection of the overall directory
/* only the leftmost file matters. */
if (is_file || write_mask) {
if (is_file && write_mask) {
- err = get_write_access(hidden_inode);
+ err = get_write_access(lower_inode);
if (!err)
- put_write_access(hidden_inode);
+ put_write_access(lower_inode);
}
break;
}
static int unionfs_setattr(struct dentry *dentry, struct iattr *ia)
{
int err = 0;
- struct dentry *hidden_dentry;
+ struct dentry *lower_dentry;
struct inode *inode = NULL;
- struct inode *hidden_inode = NULL;
+ struct inode *lower_inode = NULL;
int bstart, bend, bindex;
int i;
int copyup = 0;
for (bindex = bstart; (bindex <= bend) || (bindex == bstart);
bindex++) {
- hidden_dentry = unionfs_lower_dentry_idx(dentry, bindex);
- if (!hidden_dentry)
+ lower_dentry = unionfs_lower_dentry_idx(dentry, bindex);
+ if (!lower_dentry)
continue;
- BUG_ON(hidden_dentry->d_inode == NULL);
+ BUG_ON(lower_dentry->d_inode == NULL);
/* If the file is on a read only branch */
if (is_robranch_super(dentry->d_sb, bindex)
- || IS_RDONLY(hidden_dentry->d_inode)) {
+ || IS_RDONLY(lower_dentry->d_inode)) {
if (copyup || (bindex != bstart))
continue;
/* Only if its the leftmost file, copyup the file */
if (!err) {
copyup = 1;
- hidden_dentry =
+ lower_dentry =
unionfs_lower_dentry(dentry);
break;
}
}
}
- err = notify_change(hidden_dentry, ia);
+ err = notify_change(lower_dentry, ia);
if (err)
goto out;
break;
}
}
- /* get the size from the first hidden inode */
- hidden_inode = unionfs_lower_inode(dentry->d_inode);
- fsstack_copy_attr_all(inode, hidden_inode, unionfs_get_nlinks);
- fsstack_copy_inode_size(inode, hidden_inode);
+ /* get the size from the first lower inode */
+ lower_inode = unionfs_lower_inode(dentry->d_inode);
+ fsstack_copy_attr_all(inode, lower_inode, unionfs_get_nlinks);
+ fsstack_copy_inode_size(inode, lower_inode);
out:
unionfs_unlock_dentry(dentry);
unionfs_check_dentry(dentry);
static noinline int is_opaque_dir(struct dentry *dentry, int bindex)
{
int err = 0;
- struct dentry *hidden_dentry;
- struct dentry *wh_hidden_dentry;
- struct inode *hidden_inode;
+ struct dentry *lower_dentry;
+ struct dentry *wh_lower_dentry;
+ struct inode *lower_inode;
struct sioq_args args;
- hidden_dentry = unionfs_lower_dentry_idx(dentry, bindex);
- hidden_inode = hidden_dentry->d_inode;
+ lower_dentry = unionfs_lower_dentry_idx(dentry, bindex);
+ lower_inode = lower_dentry->d_inode;
- BUG_ON(!S_ISDIR(hidden_inode->i_mode));
+ BUG_ON(!S_ISDIR(lower_inode->i_mode));
- mutex_lock(&hidden_inode->i_mutex);
+ mutex_lock(&lower_inode->i_mutex);
- if (!permission(hidden_inode, MAY_EXEC, NULL))
- wh_hidden_dentry =
- lookup_one_len(UNIONFS_DIR_OPAQUE, hidden_dentry,
+ if (!permission(lower_inode, MAY_EXEC, NULL))
+ wh_lower_dentry =
+ lookup_one_len(UNIONFS_DIR_OPAQUE, lower_dentry,
sizeof(UNIONFS_DIR_OPAQUE) - 1);
else {
- args.is_opaque.dentry = hidden_dentry;
+ args.is_opaque.dentry = lower_dentry;
run_sioq(__is_opaque_dir, &args);
- wh_hidden_dentry = args.ret;
+ wh_lower_dentry = args.ret;
}
- mutex_unlock(&hidden_inode->i_mutex);
+ mutex_unlock(&lower_inode->i_mutex);
- if (IS_ERR(wh_hidden_dentry)) {
- err = PTR_ERR(wh_hidden_dentry);
+ if (IS_ERR(wh_lower_dentry)) {
+ err = PTR_ERR(wh_lower_dentry);
goto out;
}
- /* This is an opaque dir iff wh_hidden_dentry is positive */
- err = !!wh_hidden_dentry->d_inode;
+ /* This is an opaque dir iff wh_lower_dentry is positive */
+ err = !!wh_lower_dentry->d_inode;
- dput(wh_hidden_dentry);
+ dput(wh_lower_dentry);
out:
return err;
}
struct nameidata *nd, int lookupmode)
{
int err = 0;
- struct dentry *hidden_dentry = NULL;
- struct dentry *wh_hidden_dentry = NULL;
- struct dentry *hidden_dir_dentry = NULL;
+ struct dentry *lower_dentry = NULL;
+ struct dentry *wh_lower_dentry = NULL;
+ struct dentry *lower_dir_dentry = NULL;
struct dentry *parent_dentry = NULL;
struct dentry *d_interposed = NULL;
int bindex, bstart, bend, bopaque;
int dentry_count = 0; /* Number of positive dentries. */
int first_dentry_offset = -1; /* -1 is uninitialized */
struct dentry *first_dentry = NULL;
- struct dentry *first_hidden_dentry = NULL;
- struct vfsmount *first_hidden_mnt = NULL;
+ struct dentry *first_lower_dentry = NULL;
+ struct vfsmount *first_lower_mnt = NULL;
int locked_parent = 0;
int locked_child = 0;
int allocated_new_info = 0;
}
for (bindex = bstart; bindex <= bend; bindex++) {
- hidden_dentry = unionfs_lower_dentry_idx(dentry, bindex);
- if (lookupmode == INTERPOSE_PARTIAL && hidden_dentry)
+ lower_dentry = unionfs_lower_dentry_idx(dentry, bindex);
+ if (lookupmode == INTERPOSE_PARTIAL && lower_dentry)
continue;
- BUG_ON(hidden_dentry != NULL);
+ BUG_ON(lower_dentry != NULL);
- hidden_dir_dentry =
+ lower_dir_dentry =
unionfs_lower_dentry_idx(parent_dentry, bindex);
- /* if the parent hidden dentry does not exist skip this */
- if (!(hidden_dir_dentry && hidden_dir_dentry->d_inode))
+ /* if the parent lower dentry does not exist skip this */
+ if (!(lower_dir_dentry && lower_dir_dentry->d_inode))
continue;
/* also skip it if the parent isn't a directory. */
- if (!S_ISDIR(hidden_dir_dentry->d_inode->i_mode))
+ if (!S_ISDIR(lower_dir_dentry->d_inode->i_mode))
continue;
/* Reuse the whiteout name because its value doesn't change. */
}
/* check if whiteout exists in this branch: lookup .wh.foo */
- wh_hidden_dentry = lookup_one_len(whname, hidden_dir_dentry,
- namelen + UNIONFS_WHLEN);
- if (IS_ERR(wh_hidden_dentry)) {
- dput(first_hidden_dentry);
+ wh_lower_dentry = lookup_one_len(whname, lower_dir_dentry,
+ namelen + UNIONFS_WHLEN);
+ if (IS_ERR(wh_lower_dentry)) {
+ dput(first_lower_dentry);
unionfs_mntput(first_dentry, first_dentry_offset);
- err = PTR_ERR(wh_hidden_dentry);
+ err = PTR_ERR(wh_lower_dentry);
goto out_free;
}
- if (wh_hidden_dentry->d_inode) {
+ if (wh_lower_dentry->d_inode) {
/* We found a whiteout so lets give up. */
- if (S_ISREG(wh_hidden_dentry->d_inode->i_mode)) {
+ if (S_ISREG(wh_lower_dentry->d_inode->i_mode)) {
set_dbend(dentry, bindex);
set_dbopaque(dentry, bindex);
- dput(wh_hidden_dentry);
+ dput(wh_lower_dentry);
break;
}
err = -EIO;
printk(KERN_NOTICE "unionfs: EIO: invalid whiteout "
"entry type %d.\n",
- wh_hidden_dentry->d_inode->i_mode);
- dput(wh_hidden_dentry);
- dput(first_hidden_dentry);
+ wh_lower_dentry->d_inode->i_mode);
+ dput(wh_lower_dentry);
+ dput(first_lower_dentry);
unionfs_mntput(first_dentry, first_dentry_offset);
goto out_free;
}
- dput(wh_hidden_dentry);
- wh_hidden_dentry = NULL;
+ dput(wh_lower_dentry);
+ wh_lower_dentry = NULL;
/* Now do regular lookup; lookup foo */
nd->dentry = unionfs_lower_dentry_idx(dentry, bindex);
/* FIXME: fix following line for mount point crossing */
nd->mnt = unionfs_lower_mnt_idx(parent_dentry, bindex);
- hidden_dentry = lookup_one_len_nd(name, hidden_dir_dentry,
- namelen, nd);
- if (IS_ERR(hidden_dentry)) {
- dput(first_hidden_dentry);
+ lower_dentry = lookup_one_len_nd(name, lower_dir_dentry,
+ namelen, nd);
+ if (IS_ERR(lower_dentry)) {
+ dput(first_lower_dentry);
unionfs_mntput(first_dentry, first_dentry_offset);
- err = PTR_ERR(hidden_dentry);
+ err = PTR_ERR(lower_dentry);
goto out_free;
}
* Store the first negative dentry specially, because if they
* are all negative we need this for future creates.
*/
- if (!hidden_dentry->d_inode) {
- if (!first_hidden_dentry && (dbstart(dentry) == -1)) {
- first_hidden_dentry = hidden_dentry;
+ if (!lower_dentry->d_inode) {
+ if (!first_lower_dentry && (dbstart(dentry) == -1)) {
+ first_lower_dentry = lower_dentry;
/*
* FIXME: following line needs to be changed
* to allow mount-point crossing
*/
first_dentry = parent_dentry;
- first_hidden_mnt =
+ first_lower_mnt =
unionfs_mntget(parent_dentry, bindex);
first_dentry_offset = bindex;
} else
- dput(hidden_dentry);
+ dput(lower_dentry);
continue;
}
/* store underlying dentry */
if (dbstart(dentry) == -1)
set_dbstart(dentry, bindex);
- unionfs_set_lower_dentry_idx(dentry, bindex, hidden_dentry);
+ unionfs_set_lower_dentry_idx(dentry, bindex, lower_dentry);
/*
* FIXME: the following line needs to get fixed to allow
* mount-point crossing
/* update parent directory's atime with the bindex */
fsstack_copy_attr_atime(parent_dentry->d_inode,
- hidden_dir_dentry->d_inode);
+ lower_dir_dentry->d_inode);
/* We terminate file lookups here. */
- if (!S_ISDIR(hidden_dentry->d_inode->i_mode)) {
+ if (!S_ISDIR(lower_dentry->d_inode->i_mode)) {
if (lookupmode == INTERPOSE_PARTIAL)
continue;
if (dentry_count == 1)
opaque = is_opaque_dir(dentry, bindex);
if (opaque < 0) {
- dput(first_hidden_dentry);
+ dput(first_lower_dentry);
unionfs_mntput(first_dentry, first_dentry_offset);
err = opaque;
goto out_free;
/* FIXME: fix following line for mount point crossing */
nd->mnt = unionfs_lower_mnt_idx(parent_dentry, bindex);
- first_hidden_dentry =
- lookup_one_len_nd(name, hidden_dir_dentry,
+ first_lower_dentry =
+ lookup_one_len_nd(name, lower_dir_dentry,
namelen, nd);
first_dentry_offset = bindex;
- if (IS_ERR(first_hidden_dentry)) {
- err = PTR_ERR(first_hidden_dentry);
+ if (IS_ERR(first_lower_dentry)) {
+ err = PTR_ERR(first_lower_dentry);
goto out;
}
* mount-point crossing
*/
first_dentry = dentry;
- first_hidden_mnt = unionfs_mntget(dentry->d_sb->s_root,
- bindex);
+ first_lower_mnt = unionfs_mntget(dentry->d_sb->s_root,
+ bindex);
}
unionfs_set_lower_dentry_idx(dentry, first_dentry_offset,
- first_hidden_dentry);
+ first_lower_dentry);
unionfs_set_lower_mnt_idx(dentry, first_dentry_offset,
- first_hidden_mnt);
+ first_lower_mnt);
set_dbstart(dentry, first_dentry_offset);
set_dbend(dentry, first_dentry_offset);
* If we're holding onto the first negative dentry & corresponding
* vfsmount - throw it out.
*/
- dput(first_hidden_dentry);
+ dput(first_lower_dentry);
unionfs_mntput(first_dentry, first_dentry_offset);
/* Partial lookups need to re-interpose, or throw away older negs. */
int bindex;
int bstart = dbstart(dentry);
int bend = dbend(dentry);
- struct dentry *hidden_dentry;
+ struct dentry *lower_dentry;
for (bindex = bstart; bindex <= bend; bindex++) {
- hidden_dentry = unionfs_lower_dentry_idx(dentry, bindex);
- if (!hidden_dentry)
+ lower_dentry = unionfs_lower_dentry_idx(dentry, bindex);
+ if (!lower_dentry)
continue;
- if (hidden_dentry->d_inode) {
+ if (lower_dentry->d_inode) {
set_dbstart(dentry, bindex);
break;
}
- dput(hidden_dentry);
+ dput(lower_dentry);
unionfs_set_lower_dentry_idx(dentry, bindex, NULL);
}
}
struct dentry *unionfs_interpose(struct dentry *dentry, struct super_block *sb,
int flag)
{
- struct inode *hidden_inode;
- struct dentry *hidden_dentry;
+ struct inode *lower_inode;
+ struct dentry *lower_dentry;
int err = 0;
struct inode *inode;
int is_negative_dentry = 1;
fill_i_info:
skipped = 0;
for (bindex = bstart; bindex <= bend; bindex++) {
- hidden_dentry = unionfs_lower_dentry_idx(dentry, bindex);
- if (!hidden_dentry) {
+ lower_dentry = unionfs_lower_dentry_idx(dentry, bindex);
+ if (!lower_dentry) {
unionfs_set_lower_inode_idx(inode, bindex, NULL);
continue;
}
- /* Initialize the hidden inode to the new hidden inode. */
- if (!hidden_dentry->d_inode)
+ /* Initialize the lower inode to the new lower inode. */
+ if (!lower_dentry->d_inode)
continue;
unionfs_set_lower_inode_idx(inode, bindex,
- igrab(hidden_dentry->d_inode));
+ igrab(lower_dentry->d_inode));
}
ibstart(inode) = dbstart(dentry);
ibend(inode) = dbend(dentry);
/* Use attributes from the first branch. */
- hidden_inode = unionfs_lower_inode(inode);
+ lower_inode = unionfs_lower_inode(inode);
/* Use different set of inode ops for symlinks & directories */
- if (S_ISLNK(hidden_inode->i_mode))
+ if (S_ISLNK(lower_inode->i_mode))
inode->i_op = &unionfs_symlink_iops;
- else if (S_ISDIR(hidden_inode->i_mode))
+ else if (S_ISDIR(lower_inode->i_mode))
inode->i_op = &unionfs_dir_iops;
/* Use different set of file ops for directories */
- if (S_ISDIR(hidden_inode->i_mode))
+ if (S_ISDIR(lower_inode->i_mode))
inode->i_fop = &unionfs_dir_fops;
/* properly initialize special inodes */
- if (S_ISBLK(hidden_inode->i_mode) || S_ISCHR(hidden_inode->i_mode) ||
- S_ISFIFO(hidden_inode->i_mode) || S_ISSOCK(hidden_inode->i_mode))
- init_special_inode(inode, hidden_inode->i_mode,
- hidden_inode->i_rdev);
+ if (S_ISBLK(lower_inode->i_mode) || S_ISCHR(lower_inode->i_mode) ||
+ S_ISFIFO(lower_inode->i_mode) || S_ISSOCK(lower_inode->i_mode))
+ init_special_inode(inode, lower_inode->i_mode,
+ lower_inode->i_rdev);
/* all well, copy inode attributes */
- fsstack_copy_attr_all(inode, hidden_inode, unionfs_get_nlinks);
- fsstack_copy_inode_size(inode, hidden_inode);
+ fsstack_copy_attr_all(inode, lower_inode, unionfs_get_nlinks);
+ fsstack_copy_inode_size(inode, lower_inode);
if (spliced)
goto out_spliced;
/* like interpose above, but for an already existing dentry */
void unionfs_reinterpose(struct dentry *dentry)
{
- struct dentry *hidden_dentry;
+ struct dentry *lower_dentry;
struct inode *inode;
int bindex, bstart, bend;
bstart = dbstart(dentry);
bend = dbend(dentry);
for (bindex = bstart; bindex <= bend; bindex++) {
- hidden_dentry = unionfs_lower_dentry_idx(dentry, bindex);
- if (!hidden_dentry)
+ lower_dentry = unionfs_lower_dentry_idx(dentry, bindex);
+ if (!lower_dentry)
continue;
- if (!hidden_dentry->d_inode)
+ if (!lower_dentry->d_inode)
continue;
if (unionfs_lower_inode_idx(inode, bindex))
continue;
unionfs_set_lower_inode_idx(inode, bindex,
- igrab(hidden_dentry->d_inode));
+ igrab(lower_dentry->d_inode));
}
ibstart(inode) = dbstart(dentry);
ibend(inode) = dbend(dentry);
return 0;
}
-/* checks if two hidden_dentries have overlapping branches */
+/* checks if two lower_dentries have overlapping branches */
static int is_branch_overlap(struct dentry *dent1, struct dentry *dent2)
{
struct dentry *dent = NULL;
/* parse the dirs= mount argument */
static int parse_dirs_option(struct super_block *sb, struct unionfs_dentry_info
- *hidden_root_info, char *options)
+ *lower_root_info, char *options)
{
struct nameidata nd;
char *name;
if (options[i] == ':')
branches++;
- /* allocate space for underlying pointers to hidden dentry */
+ /* allocate space for underlying pointers to lower dentry */
UNIONFS_SB(sb)->data =
kcalloc(branches, sizeof(struct unionfs_data), GFP_KERNEL);
if (!UNIONFS_SB(sb)->data) {
goto out;
}
- hidden_root_info->lower_paths =
+ lower_root_info->lower_paths =
kcalloc(branches, sizeof(struct path), GFP_KERNEL);
- if (!hidden_root_info->lower_paths) {
+ if (!lower_root_info->lower_paths) {
err = -ENOMEM;
goto out;
}
err = path_lookup(name, LOOKUP_FOLLOW, &nd);
if (err) {
printk(KERN_WARNING "unionfs: error accessing "
- "hidden directory '%s' (error %d)\n",
+ "lower directory '%s' (error %d)\n",
name, err);
goto out;
}
if ((err = check_branch(&nd))) {
- printk(KERN_WARNING "unionfs: hidden directory "
+ printk(KERN_WARNING "unionfs: lower directory "
"'%s' is not a valid branch\n", name);
path_release(&nd);
goto out;
}
- hidden_root_info->lower_paths[bindex].dentry = nd.dentry;
- hidden_root_info->lower_paths[bindex].mnt = nd.mnt;
+ lower_root_info->lower_paths[bindex].dentry = nd.dentry;
+ lower_root_info->lower_paths[bindex].mnt = nd.mnt;
unionfs_write_lock(sb);
set_branchperms(sb, bindex, perms);
new_branch_id(sb, bindex);
unionfs_write_unlock(sb);
- if (hidden_root_info->bstart < 0)
- hidden_root_info->bstart = bindex;
- hidden_root_info->bend = bindex;
+ if (lower_root_info->bstart < 0)
+ lower_root_info->bstart = bindex;
+ lower_root_info->bend = bindex;
bindex++;
}
goto out;
}
- BUG_ON(branches != (hidden_root_info->bend + 1));
+ BUG_ON(branches != (lower_root_info->bend + 1));
/*
* Ensure that no overlaps exist in the branches.
* branch-overlapping test.
*/
for (i = 0; i < branches; i++) {
- dent1 = hidden_root_info->lower_paths[i].dentry;
+ dent1 = lower_root_info->lower_paths[i].dentry;
for (j = i + 1; j < branches; j++) {
- dent2 = hidden_root_info->lower_paths[j].dentry;
+ dent2 = lower_root_info->lower_paths[j].dentry;
if (is_branch_overlap(dent1, dent2)) {
printk(KERN_WARNING "unionfs: branches %d and "
"%d overlap\n", i, j);
out:
if (err) {
for (i = 0; i < branches; i++)
- if (hidden_root_info->lower_paths[i].dentry) {
- dput(hidden_root_info->lower_paths[i].dentry);
+ if (lower_root_info->lower_paths[i].dentry) {
+ dput(lower_root_info->lower_paths[i].dentry);
/* initialize: can't use unionfs_mntput here */
- mntput(hidden_root_info->lower_paths[i].mnt);
+ mntput(lower_root_info->lower_paths[i].mnt);
}
- kfree(hidden_root_info->lower_paths);
+ kfree(lower_root_info->lower_paths);
kfree(UNIONFS_SB(sb)->data);
/*
* MUST clear the pointers to prevent potential double free if
* the caller dies later on
*/
- hidden_root_info->lower_paths = NULL;
+ lower_root_info->lower_paths = NULL;
UNIONFS_SB(sb)->data = NULL;
}
return err;
/*
* Parse mount options. See the manual page for usage instructions.
*
- * Returns the dentry object of the lower-level (hidden) directory;
- * We want to mount our stackable file system on top of that hidden directory.
+ * Returns the dentry object of the lower-level (lower) directory;
+ * We want to mount our stackable file system on top of that lower directory.
*/
static struct unionfs_dentry_info *unionfs_parse_options(
- struct super_block *sb,
- char *options)
+ struct super_block *sb,
+ char *options)
{
- struct unionfs_dentry_info *hidden_root_info;
+ struct unionfs_dentry_info *lower_root_info;
char *optname;
int err = 0;
int bindex;
/* allocate private data area */
err = -ENOMEM;
- hidden_root_info =
+ lower_root_info =
kzalloc(sizeof(struct unionfs_dentry_info), GFP_KERNEL);
- if (!hidden_root_info)
+ if (!lower_root_info)
goto out_error;
- hidden_root_info->bstart = -1;
- hidden_root_info->bend = -1;
- hidden_root_info->bopaque = -1;
+ lower_root_info->bstart = -1;
+ lower_root_info->bend = -1;
+ lower_root_info->bopaque = -1;
while ((optname = strsep(&options, ",")) != NULL) {
char *optarg;
err = -EINVAL;
goto out_error;
}
- err = parse_dirs_option(sb, hidden_root_info, optarg);
+ err = parse_dirs_option(sb, lower_root_info, optarg);
if (err)
goto out_error;
continue;
goto out;
out_error:
- if (hidden_root_info && hidden_root_info->lower_paths) {
- for (bindex = hidden_root_info->bstart;
- bindex >= 0 && bindex <= hidden_root_info->bend;
+ if (lower_root_info && lower_root_info->lower_paths) {
+ for (bindex = lower_root_info->bstart;
+ bindex >= 0 && bindex <= lower_root_info->bend;
bindex++) {
struct dentry *d;
struct vfsmount *m;
- d = hidden_root_info->lower_paths[bindex].dentry;
- m = hidden_root_info->lower_paths[bindex].mnt;
+ d = lower_root_info->lower_paths[bindex].dentry;
+ m = lower_root_info->lower_paths[bindex].mnt;
dput(d);
/* initializing: can't use unionfs_mntput here */
}
}
- kfree(hidden_root_info->lower_paths);
- kfree(hidden_root_info);
+ kfree(lower_root_info->lower_paths);
+ kfree(lower_root_info);
kfree(UNIONFS_SB(sb)->data);
UNIONFS_SB(sb)->data = NULL;
- hidden_root_info = ERR_PTR(err);
+ lower_root_info = ERR_PTR(err);
out:
- return hidden_root_info;
+ return lower_root_info;
}
/*
int silent)
{
int err = 0;
- struct unionfs_dentry_info *hidden_root_info = NULL;
+ struct unionfs_dentry_info *lower_root_info = NULL;
int bindex, bstart, bend;
if (!raw_data) {
init_rwsem(&UNIONFS_SB(sb)->rwsem);
UNIONFS_SB(sb)->high_branch_id = -1; /* -1 == invalid branch ID */
- hidden_root_info = unionfs_parse_options(sb, raw_data);
- if (IS_ERR(hidden_root_info)) {
+ lower_root_info = unionfs_parse_options(sb, raw_data);
+ if (IS_ERR(lower_root_info)) {
printk(KERN_WARNING
"unionfs: read_super: error while parsing options "
- "(err = %ld)\n", PTR_ERR(hidden_root_info));
- err = PTR_ERR(hidden_root_info);
- hidden_root_info = NULL;
+ "(err = %ld)\n", PTR_ERR(lower_root_info));
+ err = PTR_ERR(lower_root_info);
+ lower_root_info = NULL;
goto out_free;
}
- if (hidden_root_info->bstart == -1) {
+ if (lower_root_info->bstart == -1) {
err = -ENOENT;
goto out_free;
}
- /* set the hidden superblock field of upper superblock */
- bstart = hidden_root_info->bstart;
+ /* set the lower superblock field of upper superblock */
+ bstart = lower_root_info->bstart;
BUG_ON(bstart != 0);
- sbend(sb) = bend = hidden_root_info->bend;
+ sbend(sb) = bend = lower_root_info->bend;
for (bindex = bstart; bindex <= bend; bindex++) {
struct dentry *d;
- d = hidden_root_info->lower_paths[bindex].dentry;
+ d = lower_root_info->lower_paths[bindex].dentry;
unionfs_write_lock(sb);
unionfs_set_lower_super_idx(sb, bindex, d->d_sb);
if ((err = new_dentry_private_data(sb->s_root)))
goto out_freedpd;
- /* Set the hidden dentries for s_root */
+ /* Set the lower dentries for s_root */
for (bindex = bstart; bindex <= bend; bindex++) {
struct dentry *d;
struct vfsmount *m;
- d = hidden_root_info->lower_paths[bindex].dentry;
- m = hidden_root_info->lower_paths[bindex].mnt;
+ d = lower_root_info->lower_paths[bindex].dentry;
+ m = lower_root_info->lower_paths[bindex].mnt;
unionfs_set_lower_dentry_idx(sb->s_root, bindex, d);
unionfs_set_lower_mnt_idx(sb->s_root, bindex, m);
dput(sb->s_root);
out_dput:
- if (hidden_root_info && !IS_ERR(hidden_root_info)) {
- for (bindex = hidden_root_info->bstart;
- bindex <= hidden_root_info->bend; bindex++) {
+ if (lower_root_info && !IS_ERR(lower_root_info)) {
+ for (bindex = lower_root_info->bstart;
+ bindex <= lower_root_info->bend; bindex++) {
struct dentry *d;
struct vfsmount *m;
- d = hidden_root_info->lower_paths[bindex].dentry;
- m = hidden_root_info->lower_paths[bindex].mnt;
+ d = lower_root_info->lower_paths[bindex].dentry;
+ m = lower_root_info->lower_paths[bindex].mnt;
dput(d);
/* initializing: can't use unionfs_mntput here */
mntput(m);
}
- kfree(hidden_root_info->lower_paths);
- kfree(hidden_root_info);
- hidden_root_info = NULL;
+ kfree(lower_root_info->lower_paths);
+ kfree(lower_root_info);
+ lower_root_info = NULL;
}
out_free:
sb->s_fs_info = NULL;
out:
- if (hidden_root_info && !IS_ERR(hidden_root_info)) {
- kfree(hidden_root_info->lower_paths);
- kfree(hidden_root_info);
+ if (lower_root_info && !IS_ERR(lower_root_info)) {
+ kfree(lower_root_info->lower_paths);
+ kfree(lower_root_info);
}
return err;
}
#define MINHASHSIZE 1
static int guesstimate_hash_size(struct inode *inode)
{
- struct inode *hidden_inode;
+ struct inode *lower_inode;
int bindex;
int hashsize = MINHASHSIZE;
return UNIONFS_I(inode)->hashsize;
for (bindex = ibstart(inode); bindex <= ibend(inode); bindex++) {
- if (!(hidden_inode = unionfs_lower_inode_idx(inode, bindex)))
+ if (!(lower_inode = unionfs_lower_inode_idx(inode, bindex)))
continue;
- if (hidden_inode->i_size == DENTPAGE)
+ if (lower_inode->i_size == DENTPAGE)
hashsize += DENTPERONEPAGE;
else
- hashsize += (hidden_inode->i_size / DENTPAGE) *
+ hashsize += (lower_inode->i_size / DENTPAGE) *
DENTPERPAGE;
}
int bindex, struct dentry **wh_old)
{
int err = 0;
- struct dentry *hidden_old_dentry;
- struct dentry *hidden_new_dentry;
- struct dentry *hidden_old_dir_dentry;
- struct dentry *hidden_new_dir_dentry;
- struct dentry *hidden_wh_dentry;
- struct dentry *hidden_wh_dir_dentry;
+ struct dentry *lower_old_dentry;
+ struct dentry *lower_new_dentry;
+ struct dentry *lower_old_dir_dentry;
+ struct dentry *lower_new_dir_dentry;
+ struct dentry *lower_wh_dentry;
+ struct dentry *lower_wh_dir_dentry;
char *wh_name = NULL;
- hidden_new_dentry = unionfs_lower_dentry_idx(new_dentry, bindex);
- hidden_old_dentry = unionfs_lower_dentry_idx(old_dentry, bindex);
+ lower_new_dentry = unionfs_lower_dentry_idx(new_dentry, bindex);
+ lower_old_dentry = unionfs_lower_dentry_idx(old_dentry, bindex);
- if (!hidden_new_dentry) {
- hidden_new_dentry =
+ if (!lower_new_dentry) {
+ lower_new_dentry =
create_parents(new_dentry->d_parent->d_inode,
new_dentry, new_dentry->d_name.name,
bindex);
- if (IS_ERR(hidden_new_dentry)) {
+ if (IS_ERR(lower_new_dentry)) {
printk(KERN_DEBUG "unionfs: error creating directory "
"tree for rename, bindex = %d, err = %ld\n",
- bindex, PTR_ERR(hidden_new_dentry));
- err = PTR_ERR(hidden_new_dentry);
+ bindex, PTR_ERR(lower_new_dentry));
+ err = PTR_ERR(lower_new_dentry);
goto out;
}
}
goto out;
}
- hidden_wh_dentry = lookup_one_len(wh_name, hidden_new_dentry->d_parent,
- new_dentry->d_name.len +
- UNIONFS_WHLEN);
- if (IS_ERR(hidden_wh_dentry)) {
- err = PTR_ERR(hidden_wh_dentry);
+ lower_wh_dentry = lookup_one_len(wh_name, lower_new_dentry->d_parent,
+ new_dentry->d_name.len +
+ UNIONFS_WHLEN);
+ if (IS_ERR(lower_wh_dentry)) {
+ err = PTR_ERR(lower_wh_dentry);
goto out;
}
- if (hidden_wh_dentry->d_inode) {
+ if (lower_wh_dentry->d_inode) {
/* get rid of the whiteout that is existing */
- if (hidden_new_dentry->d_inode) {
+ if (lower_new_dentry->d_inode) {
printk(KERN_WARNING "unionfs: both a whiteout and a "
"dentry exist when doing a rename!\n");
err = -EIO;
- dput(hidden_wh_dentry);
+ dput(lower_wh_dentry);
goto out;
}
- hidden_wh_dir_dentry = lock_parent(hidden_wh_dentry);
+ lower_wh_dir_dentry = lock_parent(lower_wh_dentry);
if (!(err = is_robranch_super(old_dentry->d_sb, bindex)))
- err = vfs_unlink(hidden_wh_dir_dentry->d_inode,
- hidden_wh_dentry);
+ err = vfs_unlink(lower_wh_dir_dentry->d_inode,
+ lower_wh_dentry);
- dput(hidden_wh_dentry);
- unlock_dir(hidden_wh_dir_dentry);
+ dput(lower_wh_dentry);
+ unlock_dir(lower_wh_dir_dentry);
if (err)
goto out;
} else
- dput(hidden_wh_dentry);
+ dput(lower_wh_dentry);
- dget(hidden_old_dentry);
- hidden_old_dir_dentry = dget_parent(hidden_old_dentry);
- hidden_new_dir_dentry = dget_parent(hidden_new_dentry);
+ dget(lower_old_dentry);
+ lower_old_dir_dentry = dget_parent(lower_old_dentry);
+ lower_new_dir_dentry = dget_parent(lower_new_dentry);
- lock_rename(hidden_old_dir_dentry, hidden_new_dir_dentry);
+ lock_rename(lower_old_dir_dentry, lower_new_dir_dentry);
err = is_robranch_super(old_dentry->d_sb, bindex);
if (err)
err = PTR_ERR(whname);
if (IS_ERR(whname))
goto out_unlock;
- *wh_old = lookup_one_len(whname, hidden_old_dir_dentry,
+ *wh_old = lookup_one_len(whname, lower_old_dir_dentry,
old_dentry->d_name.len +
UNIONFS_WHLEN);
kfree(whname);
}
}
- err = vfs_rename(hidden_old_dir_dentry->d_inode, hidden_old_dentry,
- hidden_new_dir_dentry->d_inode, hidden_new_dentry);
+ err = vfs_rename(lower_old_dir_dentry->d_inode, lower_old_dentry,
+ lower_new_dir_dentry->d_inode, lower_new_dentry);
out_unlock:
- unlock_rename(hidden_old_dir_dentry, hidden_new_dir_dentry);
+ unlock_rename(lower_old_dir_dentry, lower_new_dir_dentry);
- dput(hidden_old_dir_dentry);
- dput(hidden_new_dir_dentry);
- dput(hidden_old_dentry);
+ dput(lower_old_dir_dentry);
+ dput(lower_new_dir_dentry);
+ dput(lower_old_dentry);
out:
if (!err) {
* (2) We did a copy_up
*/
if ((old_bstart != old_bend) || (do_copyup != -1)) {
- struct dentry *hidden_parent;
+ struct dentry *lower_parent;
BUG_ON(!wh_old || wh_old->d_inode || bwh_old < 0);
- hidden_parent = lock_parent(wh_old);
- local_err = vfs_create(hidden_parent->d_inode, wh_old, S_IRUGO,
+ lower_parent = lock_parent(wh_old);
+ local_err = vfs_create(lower_parent->d_inode, wh_old, S_IRUGO,
NULL);
- unlock_dir(hidden_parent);
+ unlock_dir(lower_parent);
if (!local_err)
set_dbopaque(old_dentry, bwh_old);
else {
revert:
/* Do revert here. */
- local_err = unionfs_refresh_hidden_dentry(new_dentry, old_bstart);
+ local_err = unionfs_refresh_lower_dentry(new_dentry, old_bstart);
if (local_err) {
printk(KERN_WARNING "unionfs: revert failed in rename: "
"the new refresh failed.\n");
eio = -EIO;
}
- local_err = unionfs_refresh_hidden_dentry(old_dentry, old_bstart);
+ local_err = unionfs_refresh_lower_dentry(old_dentry, old_bstart);
if (local_err) {
printk(KERN_WARNING "unionfs: revert failed in rename: "
"the old refresh failed.\n");
eio = -EIO;
}
- local_err = unionfs_refresh_hidden_dentry(new_dentry, bindex);
+ local_err = unionfs_refresh_lower_dentry(new_dentry, bindex);
if (local_err)
eio = -EIO;
- local_err = unionfs_refresh_hidden_dentry(old_dentry, bindex);
+ local_err = unionfs_refresh_lower_dentry(old_dentry, bindex);
if (local_err)
eio = -EIO;
{
char *whname;
int bindex = -1, bstart = -1, bend = -1;
- struct dentry *parent, *hidden_parent, *wh_dentry;
+ struct dentry *parent, *lower_parent, *wh_dentry;
whname = alloc_whname(dentry->d_name.name, dentry->d_name.len);
if (IS_ERR(whname))
bend = dbend(parent);
wh_dentry = ERR_PTR(-ENOENT);
for (bindex = bstart; bindex <= bend; bindex++) {
- hidden_parent = unionfs_lower_dentry_idx(parent, bindex);
- if (!hidden_parent)
+ lower_parent = unionfs_lower_dentry_idx(parent, bindex);
+ if (!lower_parent)
continue;
- wh_dentry = lookup_one_len(whname, hidden_parent,
+ wh_dentry = lookup_one_len(whname, lower_parent,
dentry->d_name.len + UNIONFS_WHLEN);
if (IS_ERR(wh_dentry))
continue;
goto out;
/*
- * if new_dentry is already hidden because of whiteout,
+ * if new_dentry is already lower because of whiteout,
* simply override it even if the whited-out dir is not empty.
*/
wh_dentry = lookup_whiteout(new_dentry);
else {
/*
* force re-lookup since the dir on ro branch is not renamed,
- * and hidden dentries still indicate the un-renamed ones.
+ * and lower dentries still indicate the un-renamed ones.
*/
if (S_ISDIR(old_dentry->d_inode->i_mode))
atomic_dec(&UNIONFS_D(old_dentry)->generation);
int create_whiteout(struct dentry *dentry, int start)
{
int bstart, bend, bindex;
- struct dentry *hidden_dir_dentry;
- struct dentry *hidden_dentry;
- struct dentry *hidden_wh_dentry;
+ struct dentry *lower_dir_dentry;
+ struct dentry *lower_dentry;
+ struct dentry *lower_wh_dentry;
char *name = NULL;
int err = -EINVAL;
}
for (bindex = start; bindex >= 0; bindex--) {
- hidden_dentry = unionfs_lower_dentry_idx(dentry, bindex);
+ lower_dentry = unionfs_lower_dentry_idx(dentry, bindex);
- if (!hidden_dentry) {
+ if (!lower_dentry) {
/*
- * if hidden dentry is not present, create the
- * entire hidden dentry directory structure and go
+ * if lower dentry is not present, create the
+ * entire lower dentry directory structure and go
* ahead. Since we want to just create whiteout, we
* only want the parent dentry, and hence get rid of
* this dentry.
*/
- hidden_dentry = create_parents(dentry->d_inode,
- dentry,
- dentry->d_name.name,
- bindex);
- if (!hidden_dentry || IS_ERR(hidden_dentry)) {
+ lower_dentry = create_parents(dentry->d_inode,
+ dentry,
+ dentry->d_name.name,
+ bindex);
+ if (!lower_dentry || IS_ERR(lower_dentry)) {
printk(KERN_DEBUG "unionfs: create_parents "
"failed for bindex = %d\n", bindex);
continue;
}
}
- hidden_wh_dentry =
- lookup_one_len(name, hidden_dentry->d_parent,
+ lower_wh_dentry =
+ lookup_one_len(name, lower_dentry->d_parent,
dentry->d_name.len + UNIONFS_WHLEN);
- if (IS_ERR(hidden_wh_dentry))
+ if (IS_ERR(lower_wh_dentry))
continue;
/*
* The whiteout already exists. This used to be impossible,
* but now is possible because of opaqueness.
*/
- if (hidden_wh_dentry->d_inode) {
- dput(hidden_wh_dentry);
+ if (lower_wh_dentry->d_inode) {
+ dput(lower_wh_dentry);
err = 0;
goto out;
}
- hidden_dir_dentry = lock_parent(hidden_wh_dentry);
+ lower_dir_dentry = lock_parent(lower_wh_dentry);
if (!(err = is_robranch_super(dentry->d_sb, bindex)))
- err = vfs_create(hidden_dir_dentry->d_inode,
- hidden_wh_dentry,
+ err = vfs_create(lower_dir_dentry->d_inode,
+ lower_wh_dentry,
~current->fs->umask & S_IRWXUGO,
NULL);
- unlock_dir(hidden_dir_dentry);
- dput(hidden_wh_dentry);
+ unlock_dir(lower_dir_dentry);
+ dput(lower_wh_dentry);
if (!err || !IS_COPYUP_ERR(err))
break;
* This is a helper function for rename, which ends up with hosed over
* dentries when it needs to revert.
*/
-int unionfs_refresh_hidden_dentry(struct dentry *dentry, int bindex)
+int unionfs_refresh_lower_dentry(struct dentry *dentry, int bindex)
{
- struct dentry *hidden_dentry;
- struct dentry *hidden_parent;
+ struct dentry *lower_dentry;
+ struct dentry *lower_parent;
int err = 0;
verify_locked(dentry);
unionfs_lock_dentry(dentry->d_parent);
- hidden_parent = unionfs_lower_dentry_idx(dentry->d_parent, bindex);
+ lower_parent = unionfs_lower_dentry_idx(dentry->d_parent, bindex);
unionfs_unlock_dentry(dentry->d_parent);
- BUG_ON(!S_ISDIR(hidden_parent->d_inode->i_mode));
+ BUG_ON(!S_ISDIR(lower_parent->d_inode->i_mode));
- hidden_dentry = lookup_one_len(dentry->d_name.name, hidden_parent,
- dentry->d_name.len);
- if (IS_ERR(hidden_dentry)) {
- err = PTR_ERR(hidden_dentry);
+ lower_dentry = lookup_one_len(dentry->d_name.name, lower_parent,
+ dentry->d_name.len);
+ if (IS_ERR(lower_dentry)) {
+ err = PTR_ERR(lower_dentry);
goto out;
}
iput(unionfs_lower_inode_idx(dentry->d_inode, bindex));
unionfs_set_lower_inode_idx(dentry->d_inode, bindex, NULL);
- if (!hidden_dentry->d_inode) {
- dput(hidden_dentry);
+ if (!lower_dentry->d_inode) {
+ dput(lower_dentry);
unionfs_set_lower_dentry_idx(dentry, bindex, NULL);
} else {
- unionfs_set_lower_dentry_idx(dentry, bindex, hidden_dentry);
+ unionfs_set_lower_dentry_idx(dentry, bindex, lower_dentry);
unionfs_set_lower_inode_idx(dentry->d_inode, bindex,
- igrab(hidden_dentry->d_inode));
+ igrab(lower_dentry->d_inode));
}
out:
int make_dir_opaque(struct dentry *dentry, int bindex)
{
int err = 0;
- struct dentry *hidden_dentry, *diropq;
- struct inode *hidden_dir;
+ struct dentry *lower_dentry, *diropq;
+ struct inode *lower_dir;
- hidden_dentry = unionfs_lower_dentry_idx(dentry, bindex);
- hidden_dir = hidden_dentry->d_inode;
+ lower_dentry = unionfs_lower_dentry_idx(dentry, bindex);
+ lower_dir = lower_dentry->d_inode;
BUG_ON(!S_ISDIR(dentry->d_inode->i_mode) ||
- !S_ISDIR(hidden_dir->i_mode));
+ !S_ISDIR(lower_dir->i_mode));
- mutex_lock(&hidden_dir->i_mutex);
- diropq = lookup_one_len(UNIONFS_DIR_OPAQUE, hidden_dentry,
+ mutex_lock(&lower_dir->i_mutex);
+ diropq = lookup_one_len(UNIONFS_DIR_OPAQUE, lower_dentry,
sizeof(UNIONFS_DIR_OPAQUE) - 1);
if (IS_ERR(diropq)) {
err = PTR_ERR(diropq);
}
if (!diropq->d_inode)
- err = vfs_create(hidden_dir, diropq, S_IRUGO, NULL);
+ err = vfs_create(lower_dir, diropq, S_IRUGO, NULL);
if (!err)
set_dbopaque(dentry, bindex);
dput(diropq);
out:
- mutex_unlock(&hidden_dir->i_mutex);
+ mutex_unlock(&lower_dir->i_mutex);
return err;
}
int sum_nlinks = 0;
int dirs = 0;
int bindex;
- struct inode *hidden_inode;
+ struct inode *lower_inode;
/* don't bother to do all the work since we're unlinked */
if (inode->i_nlink == 0)
return unionfs_lower_inode(inode)->i_nlink;
for (bindex = ibstart(inode); bindex <= ibend(inode); bindex++) {
- hidden_inode = unionfs_lower_inode_idx(inode, bindex);
+ lower_inode = unionfs_lower_inode_idx(inode, bindex);
/* ignore files */
- if (!hidden_inode || !S_ISDIR(hidden_inode->i_mode))
+ if (!lower_inode || !S_ISDIR(lower_inode->i_mode))
continue;
- BUG_ON(hidden_inode->i_nlink < 0);
+ BUG_ON(lower_inode->i_nlink < 0);
/* A deleted directory. */
- if (hidden_inode->i_nlink == 0)
+ if (lower_inode->i_nlink == 0)
continue;
dirs++;
* Some filesystems don't properly set the number of links
* on empty directories
*/
- if (hidden_inode->i_nlink == 1)
+ if (lower_inode->i_nlink == 1)
sum_nlinks += 2;
else
- sum_nlinks += (hidden_inode->i_nlink - 2);
+ sum_nlinks += (lower_inode->i_nlink - 2);
}
return (!dirs ? 0 : sum_nlinks + 2);
err = path_lookup(optarg, LOOKUP_FOLLOW, &nd);
if (err) {
printk(KERN_WARNING "unionfs: error accessing "
- "hidden directory \"%s\" (error %d)\n",
+ "lower directory \"%s\" (error %d)\n",
optarg, err);
goto out;
}
err = path_lookup(optarg, LOOKUP_FOLLOW, &nd);
if (err) {
printk(KERN_WARNING "unionfs: error accessing "
- "hidden directory \"%s\" (error %d)\n",
+ "lower directory \"%s\" (error %d)\n",
optarg, err);
goto out;
}
err = path_lookup(optarg, LOOKUP_FOLLOW, &nd);
if (err) {
printk(KERN_WARNING "unionfs: error accessing "
- "hidden directory \"%s\" (error %d)\n",
+ "lower directory \"%s\" (error %d)\n",
optarg, err);
goto out;
}
err = path_lookup(new_branch, LOOKUP_FOLLOW, &nd);
if (err) {
printk(KERN_WARNING "unionfs: error accessing "
- "hidden directory \"%s\" (error %d)\n",
+ "lower directory \"%s\" (error %d)\n",
new_branch, err);
goto out;
}
* code base supports that correctly.
*/
if ((err = check_branch(&nd))) {
- printk(KERN_WARNING "unionfs: hidden directory "
+ printk(KERN_WARNING "unionfs: lower directory "
"\"%s\" is not a valid branch\n", optarg);
path_release(&nd);
goto out;
* and then free the temps (done near the end of this function).
*/
max_branches = cur_branches + add_branches;
- /* allocate space for new pointers to hidden dentry */
+ /* allocate space for new pointers to lower dentry */
tmp_data = kcalloc(max_branches,
sizeof(struct unionfs_data), GFP_KERNEL);
if (!tmp_data) {
goto out_release;
}
- /* (re)allocate space for new pointers to hidden dentry */
+ /* (re)allocate space for new pointers to lower dentry */
size = new_branches * sizeof(struct unionfs_data);
new_data = krealloc(tmp_data, size, GFP_KERNEL);
if (!new_data) {
static void unionfs_clear_inode(struct inode *inode)
{
int bindex, bstart, bend;
- struct inode *hidden_inode;
+ struct inode *lower_inode;
struct list_head *pos, *n;
struct unionfs_dir_state *rdstate;
}
/*
- * Decrement a reference to a hidden_inode, which was incremented
+ * Decrement a reference to a lower_inode, which was incremented
* by our read_inode when it was created initially.
*/
bstart = ibstart(inode);
bend = ibend(inode);
if (bstart >= 0) {
for (bindex = bstart; bindex <= bend; bindex++) {
- hidden_inode = unionfs_lower_inode_idx(inode, bindex);
- if (!hidden_inode)
+ lower_inode = unionfs_lower_inode_idx(inode, bindex);
+ if (!lower_inode)
continue;
- iput(hidden_inode);
+ iput(lower_inode);
}
}
*/
static void unionfs_umount_begin(struct vfsmount *mnt, int flags)
{
- struct super_block *sb, *hidden_sb;
- struct vfsmount *hidden_mnt;
+ struct super_block *sb, *lower_sb;
+ struct vfsmount *lower_mnt;
int bindex, bstart, bend;
if (!(flags & MNT_FORCE))
bstart = sbstart(sb);
bend = sbend(sb);
for (bindex = bstart; bindex <= bend; bindex++) {
- hidden_mnt = unionfs_lower_mnt_idx(sb->s_root, bindex);
+ lower_mnt = unionfs_lower_mnt_idx(sb->s_root, bindex);
unionfs_read_lock(sb);
- hidden_sb = unionfs_lower_super_idx(sb, bindex);
+ lower_sb = unionfs_lower_super_idx(sb, bindex);
unionfs_read_unlock(sb);
- if (hidden_mnt && hidden_sb && hidden_sb->s_op &&
- hidden_sb->s_op->umount_begin)
- hidden_sb->s_op->umount_begin(hidden_mnt, flags);
+ if (lower_mnt && lower_sb && lower_sb->s_op &&
+ lower_sb->s_op->umount_begin)
+ lower_sb->s_op->umount_begin(lower_mnt, flags);
}
}
int hashsize;
int cookie;
- /* The hidden inodes */
+ /* The lower inodes */
struct inode **lower_inodes;
/* to keep track of reads/writes for unlinks before closes */
atomic_t totalopens;
extern void unionfs_purge_extras(struct dentry *dentry);
extern int remove_whiteouts(struct dentry *dentry,
- struct dentry *hidden_dentry, int bindex);
+ struct dentry *lower_dentry, int bindex);
extern int do_delete_whiteouts(struct dentry *dentry, int bindex,
struct unionfs_dir_state *namelist);
extern int delete_whiteouts(struct dentry *dentry, int bindex,
struct unionfs_dir_state *namelist);
-/* Re-lookup a hidden dentry. */
-extern int unionfs_refresh_hidden_dentry(struct dentry *dentry, int bindex);
+/* Re-lookup a lower dentry. */
+extern int unionfs_refresh_lower_dentry(struct dentry *dentry, int bindex);
extern void unionfs_reinterpose(struct dentry *this_dentry);
extern struct super_block *unionfs_duplicate_super(struct super_block *sb);
/* useful for tracking code reachability */
#define UDBG printk("DBG:%s:%s:%d\n",__FILE__,__FUNCTION__,__LINE__)
-#define unionfs_check_inode(i) __unionfs_check_inode((i),\
+#define unionfs_check_inode(i) __unionfs_check_inode((i), \
__FILE__,__FUNCTION__,__LINE__)
-#define unionfs_check_dentry(d) __unionfs_check_dentry((d),\
+#define unionfs_check_dentry(d) __unionfs_check_dentry((d), \
__FILE__,__FUNCTION__,__LINE__)
-#define unionfs_check_file(f) __unionfs_check_file((f),\
+#define unionfs_check_file(f) __unionfs_check_file((f), \
__FILE__,__FUNCTION__,__LINE__)
-#define show_branch_counts(sb) __show_branch_counts((sb),\
+#define show_branch_counts(sb) __show_branch_counts((sb), \
__FILE__,__FUNCTION__,__LINE__)
extern void __unionfs_check_inode(const struct inode *inode, const char *fname,
const char *fxn, int line);
/* unlink a file by creating a whiteout */
static int unionfs_unlink_whiteout(struct inode *dir, struct dentry *dentry)
{
- struct dentry *hidden_dentry;
- struct dentry *hidden_dir_dentry;
+ struct dentry *lower_dentry;
+ struct dentry *lower_dir_dentry;
int bindex;
int err = 0;
bindex = dbstart(dentry);
- hidden_dentry = unionfs_lower_dentry_idx(dentry, bindex);
- if (!hidden_dentry)
+ lower_dentry = unionfs_lower_dentry_idx(dentry, bindex);
+ if (!lower_dentry)
goto out;
- hidden_dir_dentry = lock_parent(hidden_dentry);
+ lower_dir_dentry = lock_parent(lower_dentry);
- /* avoid destroying the hidden inode if the file is in use */
- dget(hidden_dentry);
+ /* avoid destroying the lower inode if the file is in use */
+ dget(lower_dentry);
if (!(err = is_robranch_super(dentry->d_sb, bindex)))
- err = vfs_unlink(hidden_dir_dentry->d_inode, hidden_dentry);
- dput(hidden_dentry);
- fsstack_copy_attr_times(dir, hidden_dir_dentry->d_inode);
- unlock_dir(hidden_dir_dentry);
+ err = vfs_unlink(lower_dir_dentry->d_inode, lower_dentry);
+ dput(lower_dentry);
+ fsstack_copy_attr_times(dir, lower_dir_dentry->d_inode);
+ unlock_dir(lower_dir_dentry);
if (err && !IS_COPYUP_ERR(err))
goto out;
goto out;
err = create_whiteout(dentry, dbstart(dentry) - 1);
} else if (dbopaque(dentry) != -1)
- /* There is a hidden lower-priority file with the same name. */
+ /* There is a lower lower-priority file with the same name. */
err = create_whiteout(dentry, dbopaque(dentry));
else
err = create_whiteout(dentry, dbstart(dentry));
struct unionfs_dir_state *namelist)
{
int err;
- struct dentry *hidden_dentry;
- struct dentry *hidden_dir_dentry = NULL;
+ struct dentry *lower_dentry;
+ struct dentry *lower_dir_dentry = NULL;
/* Here we need to remove whiteout entries. */
err = delete_whiteouts(dentry, dbstart(dentry), namelist);
if (err)
goto out;
- hidden_dentry = unionfs_lower_dentry(dentry);
+ lower_dentry = unionfs_lower_dentry(dentry);
- hidden_dir_dentry = lock_parent(hidden_dentry);
+ lower_dir_dentry = lock_parent(lower_dentry);
- /* avoid destroying the hidden inode if the file is in use */
- dget(hidden_dentry);
+ /* avoid destroying the lower inode if the file is in use */
+ dget(lower_dentry);
if (!(err = is_robranch(dentry)))
- err = vfs_rmdir(hidden_dir_dentry->d_inode, hidden_dentry);
- dput(hidden_dentry);
+ err = vfs_rmdir(lower_dir_dentry->d_inode, lower_dentry);
+ dput(lower_dentry);
- fsstack_copy_attr_times(dir, hidden_dir_dentry->d_inode);
+ fsstack_copy_attr_times(dir, lower_dir_dentry->d_inode);
/* propagate number of hard-links */
dentry->d_inode->i_nlink = unionfs_get_nlinks(dentry->d_inode);
out:
- if (hidden_dir_dentry)
- unlock_dir(hidden_dir_dentry);
+ if (lower_dir_dentry)
+ unlock_dir(lower_dir_dentry);
return err;
}
ssize_t unionfs_getxattr(struct dentry *dentry, const char *name, void *value,
size_t size)
{
- struct dentry *hidden_dentry = NULL;
+ struct dentry *lower_dentry = NULL;
int err = -EOPNOTSUPP;
unionfs_lock_dentry(dentry);
goto out;
}
- hidden_dentry = unionfs_lower_dentry(dentry);
+ lower_dentry = unionfs_lower_dentry(dentry);
- err = vfs_getxattr(hidden_dentry, (char*) name, value, size);
+ err = vfs_getxattr(lower_dentry, (char*) name, value, size);
out:
unionfs_unlock_dentry(dentry);
int unionfs_setxattr(struct dentry *dentry, const char *name,
const void *value, size_t size, int flags)
{
- struct dentry *hidden_dentry = NULL;
+ struct dentry *lower_dentry = NULL;
int err = -EOPNOTSUPP;
unionfs_lock_dentry(dentry);
goto out;
}
- hidden_dentry = unionfs_lower_dentry(dentry);
+ lower_dentry = unionfs_lower_dentry(dentry);
- err = vfs_setxattr(hidden_dentry, (char*) name, (void*) value,
+ err = vfs_setxattr(lower_dentry, (char*) name, (void*) value,
size, flags);
out:
*/
int unionfs_removexattr(struct dentry *dentry, const char *name)
{
- struct dentry *hidden_dentry = NULL;
+ struct dentry *lower_dentry = NULL;
int err = -EOPNOTSUPP;
unionfs_lock_dentry(dentry);
goto out;
}
- hidden_dentry = unionfs_lower_dentry(dentry);
+ lower_dentry = unionfs_lower_dentry(dentry);
- err = vfs_removexattr(hidden_dentry, (char*) name);
+ err = vfs_removexattr(lower_dentry, (char*) name);
out:
unionfs_unlock_dentry(dentry);
*/
ssize_t unionfs_listxattr(struct dentry *dentry, char *list, size_t size)
{
- struct dentry *hidden_dentry = NULL;
+ struct dentry *lower_dentry = NULL;
int err = -EOPNOTSUPP;
char *encoded_list = NULL;
goto out;
}
- hidden_dentry = unionfs_lower_dentry(dentry);
+ lower_dentry = unionfs_lower_dentry(dentry);
encoded_list = list;
- err = vfs_listxattr(hidden_dentry, encoded_list, size);
+ err = vfs_listxattr(lower_dentry, encoded_list, size);
out:
unionfs_unlock_dentry(dentry);
projects / unionfs-3.2.y.git / commitdiff