-/*
+/*
* Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
* Licensed under the GPL
*/
#include <linux/fs.h>
+#include <linux/file.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/slab.h>
};
struct hppfs_private {
- struct file proc_file;
+ struct file *proc_file;
int host_fd;
loff_t len;
struct hppfs_data *contents;
static inline struct hppfs_inode_info *HPPFS_I(struct inode *inode)
{
- return(list_entry(inode, struct hppfs_inode_info, vfs_inode));
+ return container_of(inode, struct hppfs_inode_info, vfs_inode);
}
#define HPPFS_SUPER_MAGIC 0xb00000ee
else len += parent->d_name.len + 1;
parent = parent->d_parent;
}
-
+
root = "proc";
len += strlen(root);
name = kmalloc(len + extra + 1, GFP_KERNEL);
ino->i_blocks = proc_ino->i_blocks;
}
-static struct dentry *hppfs_lookup(struct inode *ino, struct dentry *dentry,
+static struct dentry *hppfs_lookup(struct inode *ino, struct dentry *dentry,
struct nameidata *nd)
{
struct dentry *proc_dentry, *new, *parent;
err = -ENOMEM;
parent = HPPFS_I(ino)->proc_dentry;
- down(&parent->d_inode->i_sem);
+ mutex_lock(&parent->d_inode->i_mutex);
proc_dentry = d_lookup(parent, &dentry->d_name);
if(proc_dentry == NULL){
proc_dentry = d_alloc(parent, &dentry->d_name);
if(proc_dentry == NULL){
- up(&parent->d_inode->i_sem);
+ mutex_unlock(&parent->d_inode->i_mutex);
goto out;
}
- new = (*parent->d_inode->i_op->lookup)(parent->d_inode,
+ new = (*parent->d_inode->i_op->lookup)(parent->d_inode,
proc_dentry, NULL);
if(new){
dput(proc_dentry);
proc_dentry = new;
}
}
- up(&parent->d_inode->i_sem);
+ mutex_unlock(&parent->d_inode->i_mutex);
if(IS_ERR(proc_dentry))
return(proc_dentry);
inode = iget(ino->i_sb, 0);
- if(inode == NULL)
+ if(inode == NULL)
goto out_dput;
err = init_inode(inode, proc_dentry);
- if(err)
+ if(err)
goto out_put;
-
+
hppfs_read_inode(inode);
d_add(dentry, inode);
static struct inode_operations hppfs_file_iops = {
};
-static ssize_t read_proc(struct file *file, char *buf, ssize_t count,
+static ssize_t read_proc(struct file *file, char __user *buf, ssize_t count,
loff_t *ppos, int is_user)
{
- ssize_t (*read)(struct file *, char *, size_t, loff_t *);
+ ssize_t (*read)(struct file *, char __user *, size_t, loff_t *);
ssize_t n;
read = file->f_dentry->d_inode->i_fop->read;
if(!is_user)
set_fs(KERNEL_DS);
-
+
n = (*read)(file, buf, count, &file->f_pos);
if(!is_user)
set_fs(USER_DS);
if(ppos) *ppos = file->f_pos;
- return(n);
+ return n;
}
-static ssize_t hppfs_read_file(int fd, char *buf, ssize_t count)
+static ssize_t hppfs_read_file(int fd, char __user *buf, ssize_t count)
{
ssize_t n;
int cur, err;
err = os_read_file(fd, new_buf, cur);
if(err < 0){
printk("hppfs_read : read failed, errno = %d\n",
- count);
+ err);
n = err;
goto out_free;
}
out_free:
kfree(new_buf);
out:
- return(n);
+ return n;
}
-static ssize_t hppfs_read(struct file *file, char *buf, size_t count,
+static ssize_t hppfs_read(struct file *file, char __user *buf, size_t count,
loff_t *ppos)
{
struct hppfs_private *hppfs = file->private_data;
if(count > 0)
*ppos += count;
}
- else count = read_proc(&hppfs->proc_file, buf, count, ppos, 1);
+ else count = read_proc(hppfs->proc_file, buf, count, ppos, 1);
return(count);
}
-static ssize_t hppfs_write(struct file *file, const char *buf, size_t len,
+static ssize_t hppfs_write(struct file *file, const char __user *buf, size_t len,
loff_t *ppos)
{
struct hppfs_private *data = file->private_data;
- struct file *proc_file = &data->proc_file;
- ssize_t (*write)(struct file *, const char *, size_t, loff_t *);
+ struct file *proc_file = data->proc_file;
+ ssize_t (*write)(struct file *, const char __user *, size_t, loff_t *);
int err;
write = proc_file->f_dentry->d_inode->i_fop->write;
kfree(head);
}
-static struct hppfs_data *hppfs_get_data(int fd, int filter,
- struct file *proc_file,
- struct file *hppfs_file,
+static struct hppfs_data *hppfs_get_data(int fd, int filter,
+ struct file *proc_file,
+ struct file *hppfs_file,
loff_t *size_out)
{
struct hppfs_data *data, *new, *head;
err = -ENOMEM;
goto failed_free;
}
-
+
INIT_LIST_HEAD(&new->list);
list_add(&new->list, &data->list);
data = new;
failed_free:
free_contents(head);
- failed:
+ failed:
return(ERR_PTR(err));
}
proc_dentry = HPPFS_I(inode)->proc_dentry;
/* XXX This isn't closed anywhere */
- err = open_private_file(&data->proc_file, proc_dentry,
- file_mode(file->f_mode));
- if(err)
+ data->proc_file = dentry_open(dget(proc_dentry), NULL,
+ file_mode(file->f_mode));
+ 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)
+ if(fd >= 0)
data->host_fd = fd;
else printk("hppfs_open : failed to open '%s', errno = %d\n",
host_file, -fd);
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,
+ data->contents = hppfs_get_data(fd, filter,
+ data->proc_file,
file, &data->len);
if(!IS_ERR(data->contents))
data->host_fd = fd;
goto out;
proc_dentry = HPPFS_I(inode)->proc_dentry;
- err = open_private_file(&data->proc_file, proc_dentry,
- file_mode(file->f_mode));
- if(err)
+ data->proc_file = dentry_open(dget(proc_dentry), NULL,
+ file_mode(file->f_mode));
+ err = PTR_ERR(data->proc_file);
+ if(IS_ERR(data->proc_file))
goto out_free;
file->private_data = data;
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;
+ struct file *proc_file = data->proc_file;
loff_t (*llseek)(struct file *, loff_t, int);
loff_t ret;
return(default_llseek(file, off, where));
}
-static struct file_operations hppfs_file_fops = {
+static const struct file_operations hppfs_file_fops = {
.owner = NULL,
.llseek = hppfs_llseek,
.read = hppfs_read,
struct dentry *dentry;
};
-static int hppfs_filldir(void *d, const char *name, int size,
+static int hppfs_filldir(void *d, const char *name, int size,
loff_t offset, ino_t inode, unsigned int type)
{
struct hppfs_dirent *dirent = d;
if(file_removed(dirent->dentry, name))
return(0);
- return((*dirent->filldir)(dirent->vfs_dirent, name, size, offset,
+ return((*dirent->filldir)(dirent->vfs_dirent, name, size, offset,
inode, type));
}
static int hppfs_readdir(struct file *file, void *ent, filldir_t filldir)
{
struct hppfs_private *data = file->private_data;
- struct file *proc_file = &data->proc_file;
+ struct file *proc_file = data->proc_file;
int (*readdir)(struct file *, void *, filldir_t);
struct hppfs_dirent dirent = ((struct hppfs_dirent)
{ .vfs_dirent = ent,
return(0);
}
-static struct file_operations hppfs_dir_fops = {
+static const struct file_operations hppfs_dir_fops = {
.owner = NULL,
.readdir = hppfs_readdir,
.open = hppfs_dir_open,
struct hppfs_inode_info *hi;
hi = kmalloc(sizeof(*hi), GFP_KERNEL);
- if(hi == NULL)
+ if(hi == NULL)
return(NULL);
*hi = ((struct hppfs_inode_info) { .proc_dentry = NULL });
kfree(HPPFS_I(inode));
}
-static struct super_operations hppfs_sbops = {
+static struct super_operations hppfs_sbops = {
.alloc_inode = hppfs_alloc_inode,
.destroy_inode = hppfs_destroy_inode,
.read_inode = hppfs_read_inode,
.statfs = hppfs_statfs,
};
-static int hppfs_readlink(struct dentry *dentry, char *buffer, int buflen)
+static int hppfs_readlink(struct dentry *dentry, char __user *buffer, int buflen)
{
- struct file proc_file;
+ struct file *proc_file;
struct dentry *proc_dentry;
- int (*readlink)(struct dentry *, char *, int);
- int err, n;
+ int ret;
proc_dentry = HPPFS_I(dentry->d_inode)->proc_dentry;
- err = open_private_file(&proc_file, proc_dentry, O_RDONLY);
- if(err)
- return(err);
+ proc_file = dentry_open(dget(proc_dentry), NULL, O_RDONLY);
+ if (IS_ERR(proc_file))
+ return PTR_ERR(proc_file);
- readlink = proc_dentry->d_inode->i_op->readlink;
- n = (*readlink)(proc_dentry, buffer, buflen);
+ ret = proc_dentry->d_inode->i_op->readlink(proc_dentry, buffer, buflen);
- close_private_file(&proc_file);
-
- return(n);
+ fput(proc_file);
+
+ return ret;
}
-static int hppfs_follow_link(struct dentry *dentry, struct nameidata *nd)
+static void* hppfs_follow_link(struct dentry *dentry, struct nameidata *nd)
{
- struct file proc_file;
+ struct file *proc_file;
struct dentry *proc_dentry;
- int (*follow_link)(struct dentry *, struct nameidata *);
- int err, n;
+ void *ret;
proc_dentry = HPPFS_I(dentry->d_inode)->proc_dentry;
- err = open_private_file(&proc_file, proc_dentry, O_RDONLY);
- if(err)
- return(err);
+ proc_file = dentry_open(dget(proc_dentry), NULL, O_RDONLY);
+ if (IS_ERR(proc_file))
+ return proc_file;
+
+ ret = proc_dentry->d_inode->i_op->follow_link(proc_dentry, nd);
- follow_link = proc_dentry->d_inode->i_op->follow_link;
- n = (*follow_link)(proc_dentry, nd);
+ fput(proc_file);
- close_private_file(&proc_file);
-
- return(n);
+ return ret;
}
static struct inode_operations hppfs_dir_iops = {
err = -ENOENT;
procfs = get_fs_type("proc");
- if(procfs == NULL)
+ if(procfs == NULL)
goto out;
if(list_empty(&procfs->fs_supers))
proc_sb = list_entry(procfs->fs_supers.next, struct super_block,
s_instances);
-
+
sb->s_blocksize = 1024;
sb->s_blocksize_bits = 10;
sb->s_magic = HPPFS_SUPER_MAGIC;
git://git.onelab.eu / linux-2.6.git / blobdiff