The ProcDetails kernel module shows details about procfs files.
If a proc file is associated with a kernel module, the name of the module is shown. Otherwise, the module can only show that the file is created by the kernel.
The following other details are shown:
Mode: The permissions of the file:Format: Bitmask defined ininclude/uapi/linux/stat.h. Regular files are 100.Permissions: Bitmask defined ininclude/uapi/linux/stat.h.
Count: Uses of the fileIn use: Number of processes currently using the file.File Operations: Shows the name of the file operations struct and all defined functions pointers.
sudo insmod procdetails
./procinfo /proc/cpuinfo
------------------------------------------------------------
/proc/cpuinfo
------------------------------------------------------------
> Module : Kernel
> Mode
Format : 100
Permissions : 444
> Count : 1
> In use : 0
> File Operations : Yes
proc_cpuinfo_operations = {
.open = cpuinfo_open,
.read = seq_read,
.release = seq_release,
.llseek = seq_lseek,
};