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MODSTAT(2)		       System Calls Manual		      MODSTAT(2)

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.

FreeBSD ports 15.quarterly	  July 15, 2008 		      MODSTAT(2)

Want to link to this manual page? Use this URL:
<https://man.freebsd.org/cgi/man.cgi?query=modstat&sektion=2&manpath=FreeBSD+15.1-RELEASE+and+Ports.quarterly>

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