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kldstat(2freebsd)


NAME

     kldstat --- get status of kld file

LIBRARY

     Standard C Library (libc, -lc)

SYNOPSIS

     #include <sys/param.h>
     #include <sys/linker.h>

     int
     kldstat(int fileid, struct kld_file_stat *stat);

DESCRIPTION

     The kldstat() system call writes the info for the file referred to by
     fileid into stat.

     struct kld_file_stat {
         int         version;    /* set to sizeof(struct kld_file_stat) */
         char        name[MAXPATHLEN];
         int         refs;
         int         id;
         caddr_t     address;
         size_t      size;
         char        pathname[MAXPATHLEN];
     };

     version     This field is set to the size of the structure mentioned
             above by the code calling kldstat(), and not kldstat()
             itself.

     name        The name of the file referred to by fileid.

     refs        The number of modules referenced by fileid.

     id          The id of the file specified in fileid.

     address     The load address of the kld file.

     size        The amount of memory in bytes allocated by the file.

     pathname    The full name of the file referred to by fileid, including
             the path.

RETURN VALUES

     The kldstat() 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 file referred to by fileid is filled into the
     structure pointed to by stat unless:

     [ENOENT]           The file 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), kldsym(2),
     kldunload(2), modfind(2), modfnext(2), modnext(2), modstat(2), kld(4),
     kldstat(8)

HISTORY

     The kld interface first appeared in FreeBSD 3.0.

BUGS

     The pathname may not be accurate if the file system mounts have changed
     since the module was loaded, or if this function is called within a
     chrooted environment.



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