19 static int add_nondir(struct dentry *dentry, struct inode *inode)  in add_nondir()  argument
21 	int err = sysv_add_link(dentry, inode);  in add_nondir()
23 		d_instantiate(dentry, inode);  in add_nondir()
26 	inode_dec_link_count(inode);  in add_nondir()
27 	iput(inode);  in add_nondir()
31 static struct dentry *sysv_lookup(struct inode * dir, struct dentry * dentry, unsigned int flags)  in sysv_lookup()
33 	struct inode * inode = NULL;  in sysv_lookup()  local
40 		inode = sysv_iget(dir->i_sb, ino);  in sysv_lookup()
41 	return d_splice_alias(inode, dentry);  in sysv_lookup()
44 static int sysv_mknod(struct user_namespace *mnt_userns, struct inode *dir,  in sysv_mknod()
47 	struct inode * inode;  in sysv_mknod()  local
53 	inode = sysv_new_inode(dir, mode);  in sysv_mknod()
54 	err = PTR_ERR(inode);  in sysv_mknod()
56 	if (!IS_ERR(inode)) {  in sysv_mknod()
57 		sysv_set_inode(inode, rdev);  in sysv_mknod()
58 		mark_inode_dirty(inode);  in sysv_mknod()
59 		err = add_nondir(dentry, inode);  in sysv_mknod()
64 static int sysv_create(struct user_namespace *mnt_userns, struct inode *dir,  in sysv_create()
70 static int sysv_symlink(struct user_namespace *mnt_userns, struct inode *dir,  in sysv_symlink()
75 	struct inode * inode;  in sysv_symlink()  local
80 	inode = sysv_new_inode(dir, S_IFLNK|0777);  in sysv_symlink()
81 	err = PTR_ERR(inode);  in sysv_symlink()
82 	if (IS_ERR(inode))  in sysv_symlink()
85 	sysv_set_inode(inode, 0);  in sysv_symlink()
86 	err = page_symlink(inode, symname, l);  in sysv_symlink()
90 	mark_inode_dirty(inode);  in sysv_symlink()
91 	err = add_nondir(dentry, inode);  in sysv_symlink()
96 	inode_dec_link_count(inode);  in sysv_symlink()
97 	iput(inode);  in sysv_symlink()
101 static int sysv_link(struct dentry * old_dentry, struct inode * dir,   in sysv_link()
104 	struct inode *inode = d_inode(old_dentry);  in sysv_link()  local
106 	inode->i_ctime = current_time(inode);  in sysv_link()
107 	inode_inc_link_count(inode);  in sysv_link()
108 	ihold(inode);  in sysv_link()
110 	return add_nondir(dentry, inode);  in sysv_link()
113 static int sysv_mkdir(struct user_namespace *mnt_userns, struct inode *dir,  in sysv_mkdir()
116 	struct inode * inode;  in sysv_mkdir()  local
121 	inode = sysv_new_inode(dir, S_IFDIR|mode);  in sysv_mkdir()
122 	err = PTR_ERR(inode);  in sysv_mkdir()
123 	if (IS_ERR(inode))  in sysv_mkdir()
126 	sysv_set_inode(inode, 0);  in sysv_mkdir()
128 	inode_inc_link_count(inode);  in sysv_mkdir()
130 	err = sysv_make_empty(inode, dir);  in sysv_mkdir()
134 	err = sysv_add_link(dentry, inode);  in sysv_mkdir()
138         d_instantiate(dentry, inode);  in sysv_mkdir()
143 	inode_dec_link_count(inode);  in sysv_mkdir()
144 	inode_dec_link_count(inode);  in sysv_mkdir()
145 	iput(inode);  in sysv_mkdir()
151 static int sysv_unlink(struct inode * dir, struct dentry * dentry)  in sysv_unlink()
153 	struct inode * inode = d_inode(dentry);  in sysv_unlink()  local
166 	inode->i_ctime = dir->i_ctime;  in sysv_unlink()
167 	inode_dec_link_count(inode);  in sysv_unlink()
172 static int sysv_rmdir(struct inode * dir, struct dentry * dentry)  in sysv_rmdir()
174 	struct inode *inode = d_inode(dentry);  in sysv_rmdir()  local
177 	if (sysv_empty_dir(inode)) {  in sysv_rmdir()
180 			inode->i_size = 0;  in sysv_rmdir()
181 			inode_dec_link_count(inode);  in sysv_rmdir()
192 static int sysv_rename(struct user_namespace *mnt_userns, struct inode *old_dir,  in sysv_rename()
193 		       struct dentry *old_dentry, struct inode *new_dir,  in sysv_rename()
196 	struct inode * old_inode = d_inode(old_dentry);  in sysv_rename()
197 	struct inode * new_inode = d_inode(new_dentry);  in sysv_rename()