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@@ -1,765 +0,0 @@
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-/*
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- * Copyright (C) 2002 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
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- * Licensed under the GPL
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- */
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-
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-#include <linux/ctype.h>
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-#include <linux/dcache.h>
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-#include <linux/file.h>
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-#include <linux/fs.h>
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-#include <linux/init.h>
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-#include <linux/kernel.h>
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-#include <linux/list.h>
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-#include <linux/module.h>
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-#include <linux/mount.h>
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-#include <linux/slab.h>
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-#include <linux/statfs.h>
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-#include <linux/types.h>
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-#include <linux/pid_namespace.h>
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-#include <linux/namei.h>
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-#include <asm/uaccess.h>
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-#include <os.h>
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-
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-static struct inode *get_inode(struct super_block *, struct dentry *);
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-
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-struct hppfs_data {
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- struct list_head list;
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- char contents[PAGE_SIZE - sizeof(struct list_head)];
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-};
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-
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-struct hppfs_private {
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- struct file *proc_file;
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- int host_fd;
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- loff_t len;
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- struct hppfs_data *contents;
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-};
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-
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-struct hppfs_inode_info {
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- struct dentry *proc_dentry;
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- struct inode vfs_inode;
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-};
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-
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-static inline struct hppfs_inode_info *HPPFS_I(struct inode *inode)
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-{
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- return container_of(inode, struct hppfs_inode_info, vfs_inode);
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-}
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-
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-#define HPPFS_SUPER_MAGIC 0xb00000ee
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-
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-static const struct super_operations hppfs_sbops;
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-
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-static int is_pid(struct dentry *dentry)
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-{
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- struct super_block *sb;
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- int i;
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-
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- sb = dentry->d_sb;
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- if (dentry->d_parent != sb->s_root)
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- return 0;
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-
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- for (i = 0; i < dentry->d_name.len; i++) {
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- if (!isdigit(dentry->d_name.name[i]))
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- return 0;
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- }
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- return 1;
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-}
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-
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-static char *dentry_name(struct dentry *dentry, int extra)
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-{
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- struct dentry *parent;
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- char *root, *name;
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- const char *seg_name;
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- int len, seg_len, root_len;
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-
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- len = 0;
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- parent = dentry;
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- while (parent->d_parent != parent) {
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- if (is_pid(parent))
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- len += strlen("pid") + 1;
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- else len += parent->d_name.len + 1;
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- parent = parent->d_parent;
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- }
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-
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- root = "proc";
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- root_len = strlen(root);
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- len += root_len;
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- name = kmalloc(len + extra + 1, GFP_KERNEL);
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- if (name == NULL)
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- return NULL;
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-
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- name[len] = '\0';
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- parent = dentry;
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- while (parent->d_parent != parent) {
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- if (is_pid(parent)) {
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- seg_name = "pid";
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- seg_len = strlen(seg_name);
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- }
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- else {
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- seg_name = parent->d_name.name;
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- seg_len = parent->d_name.len;
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- }
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-
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- len -= seg_len + 1;
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- name[len] = '/';
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- memcpy(&name[len + 1], seg_name, seg_len);
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- parent = parent->d_parent;
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- }
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- memcpy(name, root, root_len);
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- return name;
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-}
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-
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-static int file_removed(struct dentry *dentry, const char *file)
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-{
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- char *host_file;
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- int extra, fd;
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-
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- extra = 0;
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- if (file != NULL)
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- extra += strlen(file) + 1;
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-
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- host_file = dentry_name(dentry, extra + strlen("/remove"));
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- if (host_file == NULL) {
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- printk(KERN_ERR "file_removed : allocation failed\n");
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- return -ENOMEM;
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- }
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-
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- if (file != NULL) {
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- strcat(host_file, "/");
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- strcat(host_file, file);
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- }
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- strcat(host_file, "/remove");
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-
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- fd = os_open_file(host_file, of_read(OPENFLAGS()), 0);
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- kfree(host_file);
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- if (fd > 0) {
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- os_close_file(fd);
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- return 1;
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- }
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- return 0;
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-}
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-
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-static struct dentry *hppfs_lookup(struct inode *ino, struct dentry *dentry,
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- unsigned int flags)
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-{
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- struct dentry *proc_dentry, *parent;
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- struct qstr *name = &dentry->d_name;
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- struct inode *inode;
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- int err, deleted;
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-
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- deleted = file_removed(dentry, NULL);
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- if (deleted < 0)
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- return ERR_PTR(deleted);
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- else if (deleted)
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- return ERR_PTR(-ENOENT);
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-
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- parent = HPPFS_I(ino)->proc_dentry;
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- mutex_lock(&d_inode(parent)->i_mutex);
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- proc_dentry = lookup_one_len(name->name, parent, name->len);
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- mutex_unlock(&d_inode(parent)->i_mutex);
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-
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- if (IS_ERR(proc_dentry))
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- return proc_dentry;
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-
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- err = -ENOMEM;
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- inode = get_inode(ino->i_sb, proc_dentry);
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- if (!inode)
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- goto out;
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-
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- d_add(dentry, inode);
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- return NULL;
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-
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- out:
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- return ERR_PTR(err);
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-}
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-
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-static const struct inode_operations hppfs_file_iops = {
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-};
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-
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-static ssize_t read_proc(struct file *file, char __user *buf, ssize_t count,
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- loff_t *ppos, int is_user)
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-{
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- ssize_t (*read)(struct file *, char __user *, size_t, loff_t *);
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- ssize_t n;
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-
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- read = file_inode(file)->i_fop->read;
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-
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- if (!is_user)
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- set_fs(KERNEL_DS);
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-
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- n = (*read)(file, buf, count, &file->f_pos);
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-
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- if (!is_user)
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- set_fs(USER_DS);
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-
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- if (ppos)
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- *ppos = file->f_pos;
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- return n;
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-}
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-
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-static ssize_t hppfs_read_file(int fd, char __user *buf, ssize_t count)
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-{
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- ssize_t n;
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- int cur, err;
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- char *new_buf;
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-
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- n = -ENOMEM;
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- new_buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
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- if (new_buf == NULL) {
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- printk(KERN_ERR "hppfs_read_file : kmalloc failed\n");
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- goto out;
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- }
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- n = 0;
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- while (count > 0) {
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- cur = min_t(ssize_t, count, PAGE_SIZE);
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- err = os_read_file(fd, new_buf, cur);
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- if (err < 0) {
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- printk(KERN_ERR "hppfs_read : read failed, "
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- "errno = %d\n", err);
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- n = err;
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- goto out_free;
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- } else if (err == 0)
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- break;
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-
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- if (copy_to_user(buf, new_buf, err)) {
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- n = -EFAULT;
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- goto out_free;
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- }
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- n += err;
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- count -= err;
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- }
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- out_free:
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- kfree(new_buf);
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- out:
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- return n;
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-}
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-
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-static ssize_t hppfs_read(struct file *file, char __user *buf, size_t count,
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- loff_t *ppos)
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-{
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- struct hppfs_private *hppfs = file->private_data;
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- struct hppfs_data *data;
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- loff_t off;
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- int err;
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-
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- if (hppfs->contents != NULL) {
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- int rem;
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-
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- if (*ppos >= hppfs->len)
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- return 0;
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-
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- data = hppfs->contents;
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- off = *ppos;
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- while (off >= sizeof(data->contents)) {
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- data = list_entry(data->list.next, struct hppfs_data,
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- list);
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- off -= sizeof(data->contents);
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- }
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-
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- if (off + count > hppfs->len)
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- count = hppfs->len - off;
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- rem = copy_to_user(buf, &data->contents[off], count);
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- *ppos += count - rem;
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- if (rem > 0)
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- return -EFAULT;
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- } else if (hppfs->host_fd != -1) {
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- err = os_seek_file(hppfs->host_fd, *ppos);
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- if (err) {
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- printk(KERN_ERR "hppfs_read : seek failed, "
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- "errno = %d\n", err);
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- return err;
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- }
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- err = hppfs_read_file(hppfs->host_fd, buf, count);
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- if (err < 0) {
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- printk(KERN_ERR "hppfs_read: read failed: %d\n", err);
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- return err;
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- }
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- count = err;
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- if (count > 0)
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- *ppos += count;
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- }
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- else count = read_proc(hppfs->proc_file, buf, count, ppos, 1);
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-
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- return count;
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-}
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-
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-static ssize_t hppfs_write(struct file *file, const char __user *buf,
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- size_t len, loff_t *ppos)
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-{
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- struct hppfs_private *data = file->private_data;
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- struct file *proc_file = data->proc_file;
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- ssize_t (*write)(struct file *, const char __user *, size_t, loff_t *);
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-
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- write = file_inode(proc_file)->i_fop->write;
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- return (*write)(proc_file, buf, len, ppos);
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-}
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-
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-static int open_host_sock(char *host_file, int *filter_out)
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-{
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- char *end;
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- int fd;
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-
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- end = &host_file[strlen(host_file)];
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- strcpy(end, "/rw");
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- *filter_out = 1;
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- fd = os_connect_socket(host_file);
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- if (fd > 0)
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- return fd;
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-
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- strcpy(end, "/r");
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- *filter_out = 0;
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- fd = os_connect_socket(host_file);
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- return fd;
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-}
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-
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-static void free_contents(struct hppfs_data *head)
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-{
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- struct hppfs_data *data;
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- struct list_head *ele, *next;
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-
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- if (head == NULL)
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- return;
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-
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- list_for_each_safe(ele, next, &head->list) {
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- data = list_entry(ele, struct hppfs_data, list);
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- kfree(data);
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- }
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- kfree(head);
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-}
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-
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-static struct hppfs_data *hppfs_get_data(int fd, int filter,
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- struct file *proc_file,
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- struct file *hppfs_file,
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- loff_t *size_out)
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-{
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- struct hppfs_data *data, *new, *head;
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- int n, err;
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-
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- err = -ENOMEM;
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- data = kmalloc(sizeof(*data), GFP_KERNEL);
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- if (data == NULL) {
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- printk(KERN_ERR "hppfs_get_data : head allocation failed\n");
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- goto failed;
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- }
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-
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- INIT_LIST_HEAD(&data->list);
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-
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- head = data;
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- *size_out = 0;
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-
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- if (filter) {
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- while ((n = read_proc(proc_file, data->contents,
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- sizeof(data->contents), NULL, 0)) > 0)
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- os_write_file(fd, data->contents, n);
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- err = os_shutdown_socket(fd, 0, 1);
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- if (err) {
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- printk(KERN_ERR "hppfs_get_data : failed to shut down "
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- "socket\n");
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- goto failed_free;
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- }
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- }
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- while (1) {
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- n = os_read_file(fd, data->contents, sizeof(data->contents));
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- if (n < 0) {
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- err = n;
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- printk(KERN_ERR "hppfs_get_data : read failed, "
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- "errno = %d\n", err);
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- goto failed_free;
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- } else if (n == 0)
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- break;
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-
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- *size_out += n;
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-
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- if (n < sizeof(data->contents))
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- break;
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-
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- new = kmalloc(sizeof(*data), GFP_KERNEL);
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- if (new == 0) {
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- printk(KERN_ERR "hppfs_get_data : data allocation "
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- "failed\n");
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- err = -ENOMEM;
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- goto failed_free;
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- }
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-
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- INIT_LIST_HEAD(&new->list);
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- list_add(&new->list, &data->list);
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- data = new;
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- }
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- return head;
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-
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- failed_free:
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- free_contents(head);
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- failed:
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- return ERR_PTR(err);
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-}
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-
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|
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-static struct hppfs_private *hppfs_data(void)
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-{
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- struct hppfs_private *data;
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-
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- data = kmalloc(sizeof(*data), GFP_KERNEL);
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- if (data == NULL)
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- return data;
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-
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- *data = ((struct hppfs_private ) { .host_fd = -1,
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- .len = -1,
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- .contents = NULL } );
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- return data;
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-}
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-
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|
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-static int file_mode(int fmode)
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-{
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- if (fmode == (FMODE_READ | FMODE_WRITE))
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- return O_RDWR;
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- if (fmode == FMODE_READ)
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- return O_RDONLY;
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- if (fmode == FMODE_WRITE)
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- return O_WRONLY;
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- return 0;
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-}
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-
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|
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-static int hppfs_open(struct inode *inode, struct file *file)
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-{
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|
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- const struct cred *cred = file->f_cred;
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- struct hppfs_private *data;
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- struct path path;
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- char *host_file;
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- int err, fd, type, filter;
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-
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- err = -ENOMEM;
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- data = hppfs_data();
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- if (data == NULL)
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- goto out;
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-
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- host_file = dentry_name(file->f_path.dentry, strlen("/rw"));
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|
|
- if (host_file == NULL)
|
|
|
- goto out_free2;
|
|
|
-
|
|
|
- path.mnt = inode->i_sb->s_fs_info;
|
|
|
- path.dentry = HPPFS_I(inode)->proc_dentry;
|
|
|
-
|
|
|
- data->proc_file = dentry_open(&path, file_mode(file->f_mode), cred);
|
|
|
- err = PTR_ERR(data->proc_file);
|
|
|
- if (IS_ERR(data->proc_file))
|
|
|
- goto out_free1;
|
|
|
-
|
|
|
- type = os_file_type(host_file);
|
|
|
- if (type == OS_TYPE_FILE) {
|
|
|
- fd = os_open_file(host_file, of_read(OPENFLAGS()), 0);
|
|
|
- if (fd >= 0)
|
|
|
- data->host_fd = fd;
|
|
|
- else
|
|
|
- printk(KERN_ERR "hppfs_open : failed to open '%s', "
|
|
|
- "errno = %d\n", host_file, -fd);
|
|
|
-
|
|
|
- data->contents = NULL;
|
|
|
- } else if (type == OS_TYPE_DIR) {
|
|
|
- fd = open_host_sock(host_file, &filter);
|
|
|
- if (fd > 0) {
|
|
|
- data->contents = hppfs_get_data(fd, filter,
|
|
|
- data->proc_file,
|
|
|
- file, &data->len);
|
|
|
- if (!IS_ERR(data->contents))
|
|
|
- data->host_fd = fd;
|
|
|
- } else
|
|
|
- printk(KERN_ERR "hppfs_open : failed to open a socket "
|
|
|
- "in '%s', errno = %d\n", host_file, -fd);
|
|
|
- }
|
|
|
- kfree(host_file);
|
|
|
-
|
|
|
- file->private_data = data;
|
|
|
- return 0;
|
|
|
-
|
|
|
- out_free1:
|
|
|
- kfree(host_file);
|
|
|
- out_free2:
|
|
|
- free_contents(data->contents);
|
|
|
- kfree(data);
|
|
|
- out:
|
|
|
- return err;
|
|
|
-}
|
|
|
-
|
|
|
-static int hppfs_dir_open(struct inode *inode, struct file *file)
|
|
|
-{
|
|
|
- const struct cred *cred = file->f_cred;
|
|
|
- struct hppfs_private *data;
|
|
|
- struct path path;
|
|
|
- int err;
|
|
|
-
|
|
|
- err = -ENOMEM;
|
|
|
- data = hppfs_data();
|
|
|
- if (data == NULL)
|
|
|
- goto out;
|
|
|
-
|
|
|
- path.mnt = inode->i_sb->s_fs_info;
|
|
|
- path.dentry = HPPFS_I(inode)->proc_dentry;
|
|
|
- data->proc_file = dentry_open(&path, file_mode(file->f_mode), cred);
|
|
|
- err = PTR_ERR(data->proc_file);
|
|
|
- if (IS_ERR(data->proc_file))
|
|
|
- goto out_free;
|
|
|
-
|
|
|
- file->private_data = data;
|
|
|
- return 0;
|
|
|
-
|
|
|
- out_free:
|
|
|
- kfree(data);
|
|
|
- out:
|
|
|
- return err;
|
|
|
-}
|
|
|
-
|
|
|
-static loff_t hppfs_llseek(struct file *file, loff_t off, int where)
|
|
|
-{
|
|
|
- struct hppfs_private *data = file->private_data;
|
|
|
- struct file *proc_file = data->proc_file;
|
|
|
- loff_t (*llseek)(struct file *, loff_t, int);
|
|
|
- loff_t ret;
|
|
|
-
|
|
|
- llseek = file_inode(proc_file)->i_fop->llseek;
|
|
|
- if (llseek != NULL) {
|
|
|
- ret = (*llseek)(proc_file, off, where);
|
|
|
- if (ret < 0)
|
|
|
- return ret;
|
|
|
- }
|
|
|
-
|
|
|
- return default_llseek(file, off, where);
|
|
|
-}
|
|
|
-
|
|
|
-static int hppfs_release(struct inode *inode, struct file *file)
|
|
|
-{
|
|
|
- struct hppfs_private *data = file->private_data;
|
|
|
- struct file *proc_file = data->proc_file;
|
|
|
- if (proc_file)
|
|
|
- fput(proc_file);
|
|
|
- kfree(data);
|
|
|
- return 0;
|
|
|
-}
|
|
|
-
|
|
|
-static const struct file_operations hppfs_file_fops = {
|
|
|
- .owner = NULL,
|
|
|
- .llseek = hppfs_llseek,
|
|
|
- .read = hppfs_read,
|
|
|
- .write = hppfs_write,
|
|
|
- .open = hppfs_open,
|
|
|
- .release = hppfs_release,
|
|
|
-};
|
|
|
-
|
|
|
-struct hppfs_dirent {
|
|
|
- struct dir_context ctx;
|
|
|
- struct dir_context *caller;
|
|
|
- struct dentry *dentry;
|
|
|
-};
|
|
|
-
|
|
|
-static int hppfs_filldir(struct dir_context *ctx, const char *name, int size,
|
|
|
- loff_t offset, u64 inode, unsigned int type)
|
|
|
-{
|
|
|
- struct hppfs_dirent *dirent =
|
|
|
- container_of(ctx, struct hppfs_dirent, ctx);
|
|
|
-
|
|
|
- if (file_removed(dirent->dentry, name))
|
|
|
- return 0;
|
|
|
-
|
|
|
- dirent->caller->pos = dirent->ctx.pos;
|
|
|
- return !dir_emit(dirent->caller, name, size, inode, type);
|
|
|
-}
|
|
|
-
|
|
|
-static int hppfs_readdir(struct file *file, struct dir_context *ctx)
|
|
|
-{
|
|
|
- struct hppfs_private *data = file->private_data;
|
|
|
- struct file *proc_file = data->proc_file;
|
|
|
- struct hppfs_dirent d = {
|
|
|
- .ctx.actor = hppfs_filldir,
|
|
|
- .caller = ctx,
|
|
|
- .dentry = file->f_path.dentry
|
|
|
- };
|
|
|
- int err;
|
|
|
- proc_file->f_pos = ctx->pos;
|
|
|
- err = iterate_dir(proc_file, &d.ctx);
|
|
|
- ctx->pos = d.ctx.pos;
|
|
|
- return err;
|
|
|
-}
|
|
|
-
|
|
|
-static const struct file_operations hppfs_dir_fops = {
|
|
|
- .owner = NULL,
|
|
|
- .iterate = hppfs_readdir,
|
|
|
- .open = hppfs_dir_open,
|
|
|
- .llseek = default_llseek,
|
|
|
- .release = hppfs_release,
|
|
|
-};
|
|
|
-
|
|
|
-static int hppfs_statfs(struct dentry *dentry, struct kstatfs *sf)
|
|
|
-{
|
|
|
- sf->f_blocks = 0;
|
|
|
- sf->f_bfree = 0;
|
|
|
- sf->f_bavail = 0;
|
|
|
- sf->f_files = 0;
|
|
|
- sf->f_ffree = 0;
|
|
|
- sf->f_type = HPPFS_SUPER_MAGIC;
|
|
|
- return 0;
|
|
|
-}
|
|
|
-
|
|
|
-static struct inode *hppfs_alloc_inode(struct super_block *sb)
|
|
|
-{
|
|
|
- struct hppfs_inode_info *hi;
|
|
|
-
|
|
|
- hi = kmalloc(sizeof(*hi), GFP_KERNEL);
|
|
|
- if (!hi)
|
|
|
- return NULL;
|
|
|
-
|
|
|
- hi->proc_dentry = NULL;
|
|
|
- inode_init_once(&hi->vfs_inode);
|
|
|
- return &hi->vfs_inode;
|
|
|
-}
|
|
|
-
|
|
|
-void hppfs_evict_inode(struct inode *ino)
|
|
|
-{
|
|
|
- clear_inode(ino);
|
|
|
- dput(HPPFS_I(ino)->proc_dentry);
|
|
|
- mntput(ino->i_sb->s_fs_info);
|
|
|
-}
|
|
|
-
|
|
|
-static void hppfs_i_callback(struct rcu_head *head)
|
|
|
-{
|
|
|
- struct inode *inode = container_of(head, struct inode, i_rcu);
|
|
|
- kfree(HPPFS_I(inode));
|
|
|
-}
|
|
|
-
|
|
|
-static void hppfs_destroy_inode(struct inode *inode)
|
|
|
-{
|
|
|
- call_rcu(&inode->i_rcu, hppfs_i_callback);
|
|
|
-}
|
|
|
-
|
|
|
-static const struct super_operations hppfs_sbops = {
|
|
|
- .alloc_inode = hppfs_alloc_inode,
|
|
|
- .destroy_inode = hppfs_destroy_inode,
|
|
|
- .evict_inode = hppfs_evict_inode,
|
|
|
- .statfs = hppfs_statfs,
|
|
|
-};
|
|
|
-
|
|
|
-static int hppfs_readlink(struct dentry *dentry, char __user *buffer,
|
|
|
- int buflen)
|
|
|
-{
|
|
|
- struct dentry *proc_dentry = HPPFS_I(d_inode(dentry))->proc_dentry;
|
|
|
- return d_inode(proc_dentry)->i_op->readlink(proc_dentry, buffer,
|
|
|
- buflen);
|
|
|
-}
|
|
|
-
|
|
|
-static const char *hppfs_follow_link(struct dentry *dentry, void **cookie)
|
|
|
-{
|
|
|
- struct dentry *proc_dentry = HPPFS_I(d_inode(dentry))->proc_dentry;
|
|
|
-
|
|
|
- return d_inode(proc_dentry)->i_op->follow_link(proc_dentry, cookie);
|
|
|
-}
|
|
|
-
|
|
|
-static void hppfs_put_link(struct inode *inode, void *cookie)
|
|
|
-{
|
|
|
- struct inode *proc_inode = d_inode(HPPFS_I(inode)->proc_dentry);
|
|
|
-
|
|
|
- if (proc_inode->i_op->put_link)
|
|
|
- proc_inode->i_op->put_link(proc_inode, cookie);
|
|
|
-}
|
|
|
-
|
|
|
-static const struct inode_operations hppfs_dir_iops = {
|
|
|
- .lookup = hppfs_lookup,
|
|
|
-};
|
|
|
-
|
|
|
-static const struct inode_operations hppfs_link_iops = {
|
|
|
- .readlink = hppfs_readlink,
|
|
|
- .follow_link = hppfs_follow_link,
|
|
|
- .put_link = hppfs_put_link,
|
|
|
-};
|
|
|
-
|
|
|
-static struct inode *get_inode(struct super_block *sb, struct dentry *dentry)
|
|
|
-{
|
|
|
- struct inode *proc_ino = d_inode(dentry);
|
|
|
- struct inode *inode = new_inode(sb);
|
|
|
-
|
|
|
- if (!inode) {
|
|
|
- dput(dentry);
|
|
|
- return NULL;
|
|
|
- }
|
|
|
-
|
|
|
- if (d_is_dir(dentry)) {
|
|
|
- inode->i_op = &hppfs_dir_iops;
|
|
|
- inode->i_fop = &hppfs_dir_fops;
|
|
|
- } else if (d_is_symlink(dentry)) {
|
|
|
- inode->i_op = &hppfs_link_iops;
|
|
|
- inode->i_fop = &hppfs_file_fops;
|
|
|
- } else {
|
|
|
- inode->i_op = &hppfs_file_iops;
|
|
|
- inode->i_fop = &hppfs_file_fops;
|
|
|
- }
|
|
|
-
|
|
|
- HPPFS_I(inode)->proc_dentry = dentry;
|
|
|
-
|
|
|
- inode->i_uid = proc_ino->i_uid;
|
|
|
- inode->i_gid = proc_ino->i_gid;
|
|
|
- inode->i_atime = proc_ino->i_atime;
|
|
|
- inode->i_mtime = proc_ino->i_mtime;
|
|
|
- inode->i_ctime = proc_ino->i_ctime;
|
|
|
- inode->i_ino = proc_ino->i_ino;
|
|
|
- inode->i_mode = proc_ino->i_mode;
|
|
|
- set_nlink(inode, proc_ino->i_nlink);
|
|
|
- inode->i_size = proc_ino->i_size;
|
|
|
- inode->i_blocks = proc_ino->i_blocks;
|
|
|
-
|
|
|
- return inode;
|
|
|
-}
|
|
|
-
|
|
|
-static int hppfs_fill_super(struct super_block *sb, void *d, int silent)
|
|
|
-{
|
|
|
- struct inode *root_inode;
|
|
|
- struct vfsmount *proc_mnt;
|
|
|
- int err = -ENOENT;
|
|
|
-
|
|
|
- proc_mnt = mntget(task_active_pid_ns(current)->proc_mnt);
|
|
|
- if (IS_ERR(proc_mnt))
|
|
|
- goto out;
|
|
|
-
|
|
|
- sb->s_blocksize = 1024;
|
|
|
- sb->s_blocksize_bits = 10;
|
|
|
- sb->s_magic = HPPFS_SUPER_MAGIC;
|
|
|
- sb->s_op = &hppfs_sbops;
|
|
|
- sb->s_fs_info = proc_mnt;
|
|
|
-
|
|
|
- err = -ENOMEM;
|
|
|
- root_inode = get_inode(sb, dget(proc_mnt->mnt_root));
|
|
|
- sb->s_root = d_make_root(root_inode);
|
|
|
- if (!sb->s_root)
|
|
|
- goto out_mntput;
|
|
|
-
|
|
|
- return 0;
|
|
|
-
|
|
|
- out_mntput:
|
|
|
- mntput(proc_mnt);
|
|
|
- out:
|
|
|
- return(err);
|
|
|
-}
|
|
|
-
|
|
|
-static struct dentry *hppfs_read_super(struct file_system_type *type,
|
|
|
- int flags, const char *dev_name,
|
|
|
- void *data)
|
|
|
-{
|
|
|
- return mount_nodev(type, flags, data, hppfs_fill_super);
|
|
|
-}
|
|
|
-
|
|
|
-static struct file_system_type hppfs_type = {
|
|
|
- .owner = THIS_MODULE,
|
|
|
- .name = "hppfs",
|
|
|
- .mount = hppfs_read_super,
|
|
|
- .kill_sb = kill_anon_super,
|
|
|
- .fs_flags = 0,
|
|
|
-};
|
|
|
-MODULE_ALIAS_FS("hppfs");
|
|
|
-
|
|
|
-static int __init init_hppfs(void)
|
|
|
-{
|
|
|
- return register_filesystem(&hppfs_type);
|
|
|
-}
|
|
|
-
|
|
|
-static void __exit exit_hppfs(void)
|
|
|
-{
|
|
|
- unregister_filesystem(&hppfs_type);
|
|
|
-}
|
|
|
-
|
|
|
-module_init(init_hppfs)
|
|
|
-module_exit(exit_hppfs)
|
|
|
-MODULE_LICENSE("GPL");
|
Linus Torvalds