go to
> kldfind(2)
> kldfirstmod(2)
> kldload(2)
> kldnext(2)
> kldstat(2)
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modstat

man page of modstat

modstat: get status of kernel module

NAME
modstat - get status of kernel module
LIBRARY
Standard C Library (libc, -lc)

SYNOPSIS

#include <sys/param.h> #include <sys/module.h> int modstat(int modid, struct module_stat *stat);

DESCRIPTION

The modstat() system call writes the info for the kernel module referred to by modid into 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 modstat(), and not modstat() itself. name The name of the module referred to by modid. refs The number of modules referenced by modid. id The id of the module specified in modid. data Module specific data.

RETURN VALUES

The modstat() function returns the value 0 if successful; otherwise the value -1 is returned and the global variable errno is set to indicate the error.

ERRORS

The information for the module referred to by modid is filled into the structure pointed to by stat unless: [ENOENT] The module was not found (probably not loaded). [EINVAL] The version specified in the 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 version field. [EFAULT] There was a problem copying one, some, or all of the fields into stat in the copyout(9) function.
SEE ALSO
kldfind(2), kldfirstmod(2), kldload(2), kldnext(2), kldstat(2), kldsym(2), kldunload(2), modfind(2), modfnext(2), modnext(2), kld(4), kldstat(8)
HISTORY
The kld interface first appeared in FreeBSD 3.0. MODSTAT(2)
 
 
 

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