[readdir] convert ubifs
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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5add2ee198
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01122e0688
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@ -346,19 +346,18 @@ static unsigned int vfs_dent_type(uint8_t type)
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* This means that UBIFS cannot support NFS which requires full
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* 'seekdir()'/'telldir()' support.
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*/
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static int ubifs_readdir(struct file *file, void *dirent, filldir_t filldir)
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static int ubifs_readdir(struct file *file, struct dir_context *ctx)
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{
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int err, over = 0;
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loff_t pos = file->f_pos;
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int err;
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struct qstr nm;
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union ubifs_key key;
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struct ubifs_dent_node *dent;
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struct inode *dir = file_inode(file);
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struct ubifs_info *c = dir->i_sb->s_fs_info;
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dbg_gen("dir ino %lu, f_pos %#llx", dir->i_ino, pos);
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dbg_gen("dir ino %lu, f_pos %#llx", dir->i_ino, ctx->pos);
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if (pos > UBIFS_S_KEY_HASH_MASK || pos == 2)
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if (ctx->pos > UBIFS_S_KEY_HASH_MASK || ctx->pos == 2)
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/*
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* The directory was seek'ed to a senseless position or there
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* are no more entries.
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@ -384,19 +383,9 @@ static int ubifs_readdir(struct file *file, void *dirent, filldir_t filldir)
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file->f_version = 1;
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/* File positions 0 and 1 correspond to "." and ".." */
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if (pos == 0) {
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if (ctx->pos < 2) {
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ubifs_assert(!file->private_data);
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over = filldir(dirent, ".", 1, 0, dir->i_ino, DT_DIR);
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if (over)
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return 0;
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file->f_pos = pos = 1;
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}
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if (pos == 1) {
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ubifs_assert(!file->private_data);
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over = filldir(dirent, "..", 2, 1,
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parent_ino(file->f_path.dentry), DT_DIR);
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if (over)
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if (!dir_emit_dots(file, ctx))
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return 0;
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/* Find the first entry in TNC and save it */
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@ -408,7 +397,7 @@ static int ubifs_readdir(struct file *file, void *dirent, filldir_t filldir)
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goto out;
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}
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file->f_pos = pos = key_hash_flash(c, &dent->key);
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ctx->pos = key_hash_flash(c, &dent->key);
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file->private_data = dent;
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}
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@ -416,16 +405,16 @@ static int ubifs_readdir(struct file *file, void *dirent, filldir_t filldir)
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if (!dent) {
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/*
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* The directory was seek'ed to and is now readdir'ed.
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* Find the entry corresponding to @pos or the closest one.
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* Find the entry corresponding to @ctx->pos or the closest one.
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*/
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dent_key_init_hash(c, &key, dir->i_ino, pos);
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dent_key_init_hash(c, &key, dir->i_ino, ctx->pos);
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nm.name = NULL;
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dent = ubifs_tnc_next_ent(c, &key, &nm);
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if (IS_ERR(dent)) {
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err = PTR_ERR(dent);
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goto out;
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}
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file->f_pos = pos = key_hash_flash(c, &dent->key);
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ctx->pos = key_hash_flash(c, &dent->key);
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file->private_data = dent;
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}
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@ -437,10 +426,9 @@ static int ubifs_readdir(struct file *file, void *dirent, filldir_t filldir)
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ubifs_inode(dir)->creat_sqnum);
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nm.len = le16_to_cpu(dent->nlen);
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over = filldir(dirent, dent->name, nm.len, pos,
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if (!dir_emit(ctx, dent->name, nm.len,
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le64_to_cpu(dent->inum),
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vfs_dent_type(dent->type));
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if (over)
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vfs_dent_type(dent->type)))
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return 0;
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/* Switch to the next entry */
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@ -453,17 +441,9 @@ static int ubifs_readdir(struct file *file, void *dirent, filldir_t filldir)
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}
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kfree(file->private_data);
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file->f_pos = pos = key_hash_flash(c, &dent->key);
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ctx->pos = key_hash_flash(c, &dent->key);
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file->private_data = dent;
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cond_resched();
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if (file->f_version == 0)
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/*
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* The file was seek'ed meanwhile, lets return and start
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* reading direntries from the new position on the next
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* invocation.
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*/
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return 0;
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}
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out:
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@ -475,15 +455,10 @@ static int ubifs_readdir(struct file *file, void *dirent, filldir_t filldir)
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kfree(file->private_data);
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file->private_data = NULL;
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/* 2 is a special value indicating that there are no more direntries */
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file->f_pos = 2;
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ctx->pos = 2;
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return 0;
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}
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static loff_t ubifs_dir_llseek(struct file *file, loff_t offset, int whence)
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{
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return generic_file_llseek(file, offset, whence);
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}
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/* Free saved readdir() state when the directory is closed */
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static int ubifs_dir_release(struct inode *dir, struct file *file)
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{
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@ -1201,10 +1176,10 @@ const struct inode_operations ubifs_dir_inode_operations = {
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};
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const struct file_operations ubifs_dir_operations = {
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.llseek = ubifs_dir_llseek,
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.llseek = generic_file_llseek,
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.release = ubifs_dir_release,
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.read = generic_read_dir,
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.readdir = ubifs_readdir,
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.iterate = ubifs_readdir,
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.fsync = ubifs_fsync,
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.unlocked_ioctl = ubifs_ioctl,
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#ifdef CONFIG_COMPAT
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