Build error

[Aniark]

On Debian 11, kernel version 5.10.92

  CC [M]  /root/pk3c/proc_version.o
/root/pk3c/proc_version.c: In function ‘ver_create’:
/root/pk3c/proc_version.c:45:54: error: passing argument 4 of ‘proc_create’ from incompatible pointer type [-Werror=incompatible-pointer-types]
   45 |         ver_file = proc_create(PROCFS_NAME, 0, NULL, &ver_fops);
      |                                                      ^~~~~~~~~
      |                                                      |
      |                                                      const struct file_operations *
In file included from /root/pk3c/proc_version.c:9:
/usr/src/linux-headers-5.10.0-19-common/include/linux/proc_fs.h:109:122: note: expected ‘const struct proc_ops *’ but argument is of type ‘const struct file_operations *’
  109 |  *name, umode_t mode, struct proc_dir_entry *parent, const struct proc_ops *proc_ops);
      |                                                      ~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~

[mcr-ksh]

Replace with the following until if (!ver_file) line 64 with:

#include "proc_commonconsts.h"
#include "proc_interface.h"

#include <linux/version.h>
#include <linux/init.h>
#include <linux/kernel.h>

#include <linux/fs.h>           // for basic filesystem
#include <linux/proc_fs.h>      // for the proc filesystem
#include <linux/seq_file.h>     // for sequence files
#include <linux/jiffies.h>      // for jiffies

#if LINUX_VERSION_CODE >= KERNEL_VERSION(4,18,0)
//#define HAVE_PROC_CREATE_SINGLE
#define HAVE_PROC_OPS
#endif

static char str_proc_version_name[32];
static char str_proc_version_num[32];
static int active_con_cnt = 0;

static struct proc_dir_entry* ver_file;

static int ver_show(struct seq_file *m, void *v)
{
        seq_printf(m, "%s %s\n%i\n",str_proc_version_name, str_proc_version_num, active_con_cnt);

        return 0;
}

static int ver_open(struct inode *inode, struct file *file)
{
        return single_open(file, ver_show, NULL);
}


#ifdef HAVE_PROC_OPS
static const struct proc_ops ver_fops = {
  .proc_open = ver_open,
  .proc_read = seq_read,
  .proc_lseek = seq_lseek,
  .proc_release = single_release,
};
#else
static const struct file_operations ver_fops =
{
        .owner          = THIS_MODULE,
        .open           = ver_open,
        .read           = seq_read,
        .llseek         = seq_lseek,
        .release        = single_release,
};
#endif

int ver_create(char* vername, char* verstr)
{
        strcpy(str_proc_version_name, vername);
        strcpy(str_proc_version_num, verstr);
#ifdef HAVE_PROC_CREATE_SINGLE
        ver_file = proc_create_single(PROCFS_NAME, 0, NULL, &ver_show);
#else
        ver_file = proc_create(PROCFS_NAME, 0, NULL, &ver_fops);
#endif