man modstat (2): get status of kernel module

LIBRARY

Lb libc

SYNOPSIS

In sys/param.h In sys/module.h Ft int Fn modstat int modid struct module_stat *stat

DESCRIPTION

The Fn modstat system call writes the info for the kernel module referred to by Fa modid into Fa stat .

struct module_stat {
        int         version;        /* set to sizeof(module_stat) */
        char        name[MAXMODNAME];
        int         refs;
        int         id;
        modspecific_t data;
};
typedef union modspecific {
        int         intval;
        u_int       uintval;
        long        longval;
        u_long      ulongval;
} modspecific_t;

version: This field is set to the size of the structure mentioned above by the code calling Fn modstat , and not Fn modstat itself.
name: The name of the module referred to by Fa modid .
refs: The number of modules referenced by Fa modid .
id: The id of the module specified in Fa modid .
data: Module specific data.

RETURN VALUES

Rv -std modstat

ERRORS

The information for the module referred to by Fa modid is filled into the structure pointed to by Fa stat unless:

Bq Er ENOENT: The module was not found (probably not loaded).
Bq Er EINVAL: The version specified in the Fa version field of stat is not the proper version. You would need to rebuild world, the kernel, or your application, if this error occurs, given that you did properly fill in the Fa version field.
Bq Er EFAULT: There was a problem copying one, some, or all of the fields into Fa stat in the copyout(9) function.

HISTORY

The kld interface first appeared in Fx 3.0 .