diff options
author | Christoph Hellwig <hch@lst.de> | 2019-01-29 09:32:30 +0100 |
---|---|---|
committer | Martin K. Petersen <martin.petersen@oracle.com> | 2019-02-05 21:28:13 -0500 |
commit | 80f2121380caa14895638b24b81800158c0844f2 (patch) | |
tree | fb042eef94e895eb93deb9a64de783e12272115c /fs/exofs/namei.c | |
parent | 972248e9111ee6fe9fb56c24ecfd7434f3d713ac (diff) | |
download | linux-80f2121380caa14895638b24b81800158c0844f2.tar.bz2 |
scsi: fs: remove exofs
This was an example for using the SCSI OSD protocol, which we're trying
to remove.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'fs/exofs/namei.c')
-rw-r--r-- | fs/exofs/namei.c | 323 |
1 files changed, 0 insertions, 323 deletions
diff --git a/fs/exofs/namei.c b/fs/exofs/namei.c deleted file mode 100644 index 7295cd722770..000000000000 --- a/fs/exofs/namei.c +++ /dev/null @@ -1,323 +0,0 @@ -/* - * Copyright (C) 2005, 2006 - * Avishay Traeger (avishay@gmail.com) - * Copyright (C) 2008, 2009 - * Boaz Harrosh <ooo@electrozaur.com> - * - * Copyrights for code taken from ext2: - * Copyright (C) 1992, 1993, 1994, 1995 - * Remy Card (card@masi.ibp.fr) - * Laboratoire MASI - Institut Blaise Pascal - * Universite Pierre et Marie Curie (Paris VI) - * from - * linux/fs/minix/inode.c - * Copyright (C) 1991, 1992 Linus Torvalds - * - * This file is part of exofs. - * - * exofs is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation. Since it is based on ext2, and the only - * valid version of GPL for the Linux kernel is version 2, the only valid - * version of GPL for exofs is version 2. - * - * exofs is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with exofs; if not, write to the Free Software - * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - */ - -#include "exofs.h" - -static inline int exofs_add_nondir(struct dentry *dentry, struct inode *inode) -{ - int err = exofs_add_link(dentry, inode); - if (!err) { - d_instantiate(dentry, inode); - return 0; - } - inode_dec_link_count(inode); - iput(inode); - return err; -} - -static struct dentry *exofs_lookup(struct inode *dir, struct dentry *dentry, - unsigned int flags) -{ - struct inode *inode; - ino_t ino; - - if (dentry->d_name.len > EXOFS_NAME_LEN) - return ERR_PTR(-ENAMETOOLONG); - - ino = exofs_inode_by_name(dir, dentry); - inode = ino ? exofs_iget(dir->i_sb, ino) : NULL; - return d_splice_alias(inode, dentry); -} - -static int exofs_create(struct inode *dir, struct dentry *dentry, umode_t mode, - bool excl) -{ - struct inode *inode = exofs_new_inode(dir, mode); - int err = PTR_ERR(inode); - if (!IS_ERR(inode)) { - inode->i_op = &exofs_file_inode_operations; - inode->i_fop = &exofs_file_operations; - inode->i_mapping->a_ops = &exofs_aops; - mark_inode_dirty(inode); - err = exofs_add_nondir(dentry, inode); - } - return err; -} - -static int exofs_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, - dev_t rdev) -{ - struct inode *inode; - int err; - - inode = exofs_new_inode(dir, mode); - err = PTR_ERR(inode); - if (!IS_ERR(inode)) { - init_special_inode(inode, inode->i_mode, rdev); - mark_inode_dirty(inode); - err = exofs_add_nondir(dentry, inode); - } - return err; -} - -static int exofs_symlink(struct inode *dir, struct dentry *dentry, - const char *symname) -{ - struct super_block *sb = dir->i_sb; - int err = -ENAMETOOLONG; - unsigned l = strlen(symname)+1; - struct inode *inode; - struct exofs_i_info *oi; - - if (l > sb->s_blocksize) - goto out; - - inode = exofs_new_inode(dir, S_IFLNK | S_IRWXUGO); - err = PTR_ERR(inode); - if (IS_ERR(inode)) - goto out; - - oi = exofs_i(inode); - if (l > sizeof(oi->i_data)) { - /* slow symlink */ - inode->i_op = &page_symlink_inode_operations; - inode_nohighmem(inode); - inode->i_mapping->a_ops = &exofs_aops; - memset(oi->i_data, 0, sizeof(oi->i_data)); - - err = page_symlink(inode, symname, l); - if (err) - goto out_fail; - } else { - /* fast symlink */ - inode->i_op = &simple_symlink_inode_operations; - inode->i_link = (char *)oi->i_data; - memcpy(oi->i_data, symname, l); - inode->i_size = l-1; - } - mark_inode_dirty(inode); - - err = exofs_add_nondir(dentry, inode); -out: - return err; - -out_fail: - inode_dec_link_count(inode); - iput(inode); - goto out; -} - -static int exofs_link(struct dentry *old_dentry, struct inode *dir, - struct dentry *dentry) -{ - struct inode *inode = d_inode(old_dentry); - - inode->i_ctime = current_time(inode); - inode_inc_link_count(inode); - ihold(inode); - - return exofs_add_nondir(dentry, inode); -} - -static int exofs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode) -{ - struct inode *inode; - int err; - - inode_inc_link_count(dir); - - inode = exofs_new_inode(dir, S_IFDIR | mode); - err = PTR_ERR(inode); - if (IS_ERR(inode)) - goto out_dir; - - inode->i_op = &exofs_dir_inode_operations; - inode->i_fop = &exofs_dir_operations; - inode->i_mapping->a_ops = &exofs_aops; - - inode_inc_link_count(inode); - - err = exofs_make_empty(inode, dir); - if (err) - goto out_fail; - - err = exofs_add_link(dentry, inode); - if (err) - goto out_fail; - - d_instantiate(dentry, inode); -out: - return err; - -out_fail: - inode_dec_link_count(inode); - inode_dec_link_count(inode); - iput(inode); -out_dir: - inode_dec_link_count(dir); - goto out; -} - -static int exofs_unlink(struct inode *dir, struct dentry *dentry) -{ - struct inode *inode = d_inode(dentry); - struct exofs_dir_entry *de; - struct page *page; - int err = -ENOENT; - - de = exofs_find_entry(dir, dentry, &page); - if (!de) - goto out; - - err = exofs_delete_entry(de, page); - if (err) - goto out; - - inode->i_ctime = dir->i_ctime; - inode_dec_link_count(inode); - err = 0; -out: - return err; -} - -static int exofs_rmdir(struct inode *dir, struct dentry *dentry) -{ - struct inode *inode = d_inode(dentry); - int err = -ENOTEMPTY; - - if (exofs_empty_dir(inode)) { - err = exofs_unlink(dir, dentry); - if (!err) { - inode->i_size = 0; - inode_dec_link_count(inode); - inode_dec_link_count(dir); - } - } - return err; -} - -static int exofs_rename(struct inode *old_dir, struct dentry *old_dentry, - struct inode *new_dir, struct dentry *new_dentry, - unsigned int flags) -{ - struct inode *old_inode = d_inode(old_dentry); - struct inode *new_inode = d_inode(new_dentry); - struct page *dir_page = NULL; - struct exofs_dir_entry *dir_de = NULL; - struct page *old_page; - struct exofs_dir_entry *old_de; - int err = -ENOENT; - - if (flags & ~RENAME_NOREPLACE) - return -EINVAL; - - old_de = exofs_find_entry(old_dir, old_dentry, &old_page); - if (!old_de) - goto out; - - if (S_ISDIR(old_inode->i_mode)) { - err = -EIO; - dir_de = exofs_dotdot(old_inode, &dir_page); - if (!dir_de) - goto out_old; - } - - if (new_inode) { - struct page *new_page; - struct exofs_dir_entry *new_de; - - err = -ENOTEMPTY; - if (dir_de && !exofs_empty_dir(new_inode)) - goto out_dir; - - err = -ENOENT; - new_de = exofs_find_entry(new_dir, new_dentry, &new_page); - if (!new_de) - goto out_dir; - err = exofs_set_link(new_dir, new_de, new_page, old_inode); - new_inode->i_ctime = current_time(new_inode); - if (dir_de) - drop_nlink(new_inode); - inode_dec_link_count(new_inode); - if (err) - goto out_dir; - } else { - err = exofs_add_link(new_dentry, old_inode); - if (err) - goto out_dir; - if (dir_de) - inode_inc_link_count(new_dir); - } - - old_inode->i_ctime = current_time(old_inode); - - exofs_delete_entry(old_de, old_page); - mark_inode_dirty(old_inode); - - if (dir_de) { - err = exofs_set_link(old_inode, dir_de, dir_page, new_dir); - inode_dec_link_count(old_dir); - if (err) - goto out_dir; - } - return 0; - - -out_dir: - if (dir_de) { - kunmap(dir_page); - put_page(dir_page); - } -out_old: - kunmap(old_page); - put_page(old_page); -out: - return err; -} - -const struct inode_operations exofs_dir_inode_operations = { - .create = exofs_create, - .lookup = exofs_lookup, - .link = exofs_link, - .unlink = exofs_unlink, - .symlink = exofs_symlink, - .mkdir = exofs_mkdir, - .rmdir = exofs_rmdir, - .mknod = exofs_mknod, - .rename = exofs_rename, - .setattr = exofs_setattr, -}; - -const struct inode_operations exofs_special_inode_operations = { - .setattr = exofs_setattr, -}; |