proc_dir_entry structure linux 3.13

Question

i am using proc_dir_entry in linux 3.13 but i got this error "dereferencing pointer to incomplete type" in this lines of code :

  struct proc_dir_entry *proc = proc_create("hello_proc", 0, NULL, &hello_proc_fops);
    printk(KERN_DEBUG "name : %s\n",proc->name);

it seem like the compile doesnt recognize the data structure

Ian Abbott · Answer 1 · 2016-08-16T11:15:29.287

2

The internals of struct proc_dir_entry were made opaque in Linux kernel 3.10 by commit 59d8053f1e16904d54ed7469d4b36801ea6b8f2c, so all you get now is a pointer to an incomplete type.

The "dereferencing pointer to incomplete type" error is due to the expression proc->name due to struct proc_dir_entry being incomplete.

edited Aug 16 '16 at 11:15

answered Aug 16 '16 at 11:04

Ian Abbott

Thanks for reply , what is the solution , that mean i musn't use this data structure ? – Waheni Aug 16 '16 at 11:23
Is there any way to work with variable like "name" , "next", "parent" or "subdir" ? all of those are useful – Waheni Aug 16 '16 at 11:31
1

@Waheni All you get to work with is what is defined by `#include `, which doesn't provide access to any of the things you mention above. – Ian Abbott Aug 16 '16 at 11:38

score 1 · Answer 2 · edited May 23 '17 at 12:00

1

you can try this answer may be you forgot to put include statements

#include <linux/module.h>
#include <linux/proc_fs.h>
#include <linux/seq_file.h>

edited May 23 '17 at 12:00

Community

answered Aug 16 '16 at 10:12

canbax

2 Answers2