/* * linux/fs/minix/namei.c * * Copyright (C) 1991, 1992 Linus Torvalds */ #include "minix.h" static int add_nondir(struct dentry *dentry, struct inode *inode) { int err = minix_add_link(dentry, inode); if (!err) { d_instantiate(dentry, inode); return 0; } inode_dec_link_count(inode); iput(inode); return err; } static struct dentry *minix_lookup(struct inode * dir, struct dentry *dentry, unsigned int flags) { struct inode * inode = NULL; ino_t ino; if (dentry->d_name.len > minix_sb(dir->i_sb)->s_namelen) return ERR_PTR(-ENAMETOOLONG); ino = minix_inode_by_name(dentry); if (ino) { inode = minix_iget(dir->i_sb, ino); if (IS_ERR(inode)) return ERR_CAST(inode); } d_add(dentry, inode); return NULL; } static int minix_mknod(struct inode * dir, struct dentry *dentry, umode_t mode, dev_t rdev) { int error; struct inode *inode; if (!old_valid_dev(rdev)) return -EINVAL; inode = minix_new_inode(dir, mode, &error); if (inode) { minix_set_inode(inode, rdev); mark_inode_dirty(inode); error = add_nondir(dentry, inode); } return error; } static int minix_tmpfile(struct inode *dir, struct dentry *dentry, umode_t mode) { int error; struct inode *inode = minix_new_inode(dir, mode, &error); if (inode) { minix_set_inode(inode, 0); mark_inode_dirty(inode); d_tmpfile(dentry, inode); } return error; } static int minix_create(struct inode *dir, struct dentry *dentry, umode_t mode, bool excl) { return minix_mknod(dir, dentry, mode, 0); } static int minix_symlink(struct inode * dir, struct dentry *dentry, const char * symname) { int err = -ENAMETOOLONG; int i = strlen(symname)+1; struct inode * inode; if (i > dir->i_sb->s_blocksize) goto out; inode = minix_new_inode(dir, S_IFLNK | 0777, &err); if (!inode) goto out; minix_set_inode(inode, 0); err = page_symlink(inode, symname, i); if (err) goto out_fail; err = add_nondir(dentry, inode); out: return err; out_fail: inode_dec_link_count(inode); iput(inode); goto out; } static int minix_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 add_nondir(dentry, inode); } static int minix_mkdir(struct inode * dir, struct dentry *dentry, umode_t mode) { struct inode * inode; int err; inode_inc_link_count(dir); inode = minix_new_inode(dir, S_IFDIR | mode, &err); if (!inode) goto out_dir; minix_set_inode(inode, 0); inode_inc_link_count(inode); err = minix_make_empty(inode, dir); if (err) goto out_fail; err = minix_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 minix_unlink(struct inode * dir, struct dentry *dentry) { int err = -ENOENT; struct inode * inode = d_inode(dentry); struct page * page; struct minix_dir_entry * de; de = minix_find_entry(dentry, &page); if (!de) goto end_unlink; err = minix_delete_entry(de, page); if (err) goto end_unlink; inode->i_ctime = dir->i_ctime; inode_dec_link_count(inode); end_unlink: return err; } static int minix_rmdir(struct inode * dir, struct dentry *dentry) { struct inode * inode = d_inode(dentry); int err = -ENOTEMPTY; if (minix_empty_dir(inode)) { err = minix_unlink(dir, dentry); if (!err) { inode_dec_link_count(dir); inode_dec_link_count(inode); } } return err; } static int minix_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 minix_dir_entry * dir_de = NULL; struct page * old_page; struct minix_dir_entry * old_de; int err = -ENOENT; if (flags & ~RENAME_NOREPLACE) return -EINVAL; old_de = minix_find_entry(old_dentry, &old_page); if (!old_de) goto out; if (S_ISDIR(old_inode->i_mode)) { err = -EIO; dir_de = minix_dotdot(old_inode, &dir_page); if (!dir_de) goto out_old; } if (new_inode) { struct page * new_page; struct minix_dir_entry * new_de; err = -ENOTEMPTY; if (dir_de && !minix_empty_dir(new_inode)) goto out_dir; err = -ENOENT; new_de = minix_find_entry(new_dentry, &new_page); if (!new_de) goto out_dir; minix_set_link(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); } else { err = minix_add_link(new_dentry, old_inode); if (err) goto out_dir; if (dir_de) inode_inc_link_count(new_dir); } minix_delete_entry(old_de, old_page); mark_inode_dirty(old_inode); if (dir_de) { minix_set_link(dir_de, dir_page, new_dir); inode_dec_link_count(old_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; } /* * directories can handle most operations... */ const struct inode_operations minix_dir_inode_operations = { .create = minix_create, .lookup = minix_lookup, .link = minix_link, .unlink = minix_unlink, .symlink = minix_symlink, .mkdir = minix_mkdir, .rmdir = minix_rmdir, .mknod = minix_mknod, .rename = minix_rename, .getattr = minix_getattr, .tmpfile = minix_tmpfile, }; next.git/commit/net/bluetooth/amp.h?id=926af6273fc683cd98cd0ce7bf0d04a02eed6742'>926af6273fc683cd98cd0ce7bf0d04a02eed6742 (diff)parenteeeefd41843218c55a8782a6920f044d9bf6207a (diff)
Merge branch 'for-linus' of git://git.kernel.dk/linux-block
Pull block fix from Jens Axboe: "A single fix that should go into 4.10, fixing a regression on some devices with the WRITE_SAME command" * 'for-linus' of git://git.kernel.dk/linux-block: block: don't try Write Same from __blkdev_issue_zeroout
Diffstat (limited to 'net/bluetooth/amp.h')