alhafoudh / fdlink Goto Github PK

It doesn't work with new kernels (e.g. 3.2.0-2-amd64).

I think these changes fix it:

--- flink_dev.c.old 2012-03-09 22:47:45.000000000 +0100
+++ flink_dev.c.new 2012-03-09 22:47:33.000000000 +0100
@@ -41,7 +41,7 @@
    old_dentry = f->f_dentry;
    error = 0;

-   error = path_lookup(to, LOOKUP_PARENT, &nd);
+   error = kern_path(to, LOOKUP_PARENT, &nd);
    if (error)
        goto release_f;

@@ -49,7 +49,8 @@
    if (f->f_vfsmnt != nd.path.mnt)
        goto release_nd;

-   new_dentry = lookup_create(&nd, 0);
+   struct path unused;
+   new_dentry = kern_path_create(AT_FDCWD, to, &unused, 0);
    error = PTR_ERR(new_dentry);
    if (!IS_ERR(new_dentry)) {
        error = vfs_link(old_dentry, nd.path.dentry->d_inode, new_dentry);

Quick patch:

diff --git a/flink/Makefile b/flink/Makefile
index b2ac1fc..8362f00 100644
--- a/flink/Makefile
+++ b/flink/Makefile
@@ -5,7 +5,7 @@ obj-m := flink_dev.o

KDIR := /lib/modules/$(shell uname -r)/build
PWD := $(shell pwd)
-CFLAGS += -g
+EXTRA_CFLAGS += -g
LDFLAGS += -g

all: default flinkapp
diff --git a/flink/flink_dev.c b/flink/flink_dev.c
index d1fcde9..a8b7d6e 100644
--- a/flink/flink_dev.c
+++ b/flink/flink_dev.c
@@ -12,13 +12,13 @@
#include <linux/miscdevice.h>
#include <linux/module.h>
#include <linux/namei.h>
+#include <linux/proc_fs.h>

#include <asm/uaccess.h>

#include "flink.h"

-static int flink_ioctl(struct inode *inode, struct file *file,

•                   unsigned int cmd, unsigned long arg)
  

  +static long flink_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
  {
  struct flink __user *p = (struct flink __user *)arg;
  struct dentry *old_dentry;
  @@ -68,7 +68,7 @@ exit:

  static const struct file_operations flink_fops = {
  .owner = THIS_MODULE,

•   .ioctl          = flink_ioctl,
  

•   .unlocked_ioctl         = flink_ioctl,
  

  };

  static struct miscdevice flink_dev = {