xref: /freebsd-12.1/lib/libc/sys/kldstat.2 (revision 578d29dd)
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2.\" Copyright (c) 1999 Chris Costello
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26.\" $FreeBSD$
27.\"
28.Dd March 3, 1999
29.Dt KLDSTAT 2
30.Os FreeBSD
31.Sh NAME
32.Nm kldstat
33.Nd get status of kld file
34.Sh SYNOPSIS
35.Fd #include <sys/param.h>
36.Fd #include <sys/linker.h>
37.Ft int
38.Fn kldstat "int fileid" "struct kld_file_stat *stat"
39.Sh DESCRIPTION
40The
41.Fn kldstat
42function writes the info for the file referred to by
43.Va fileid
44into
45.Va stat .
46.Bd -literal
47struct kld_file_stat {
48	int         version;        /* set to sizeof(linker_file_stat) */
49	char        name[MAXPATHLEN];
50	int         refs;
51	int         id;
52	caddr_t     address;        /* load address */
53	size_t      size;           /* size in bytes */
54};
55.Ed
56.Pp
57.Bl -tag -width XXXaddress
58.It version
59This field is set to the size of the structure mentioned above by the code
60calling
61.Fn kldstat ,
62and not
63.Fn kldstat
64itself.
65.It name
66The name of the file referred to by
67.Va fileid .
68.It refs
69The number of modules referenced by
70.Va fileid .
71.It id
72The id of the file specified in
73.Va fileid .
74.It address
75The load address of the kld file.
76.It size
77The size of the file.
78.Sh RETURN VALUES
79.Fn kldstat
80seems to always return 0.
81.Sh ERRORS
82The information for the file referred to by
83.Va fileid
84is filled into the structure pointed to by
85.Va stat
86unless:
87.Bl -tag -width Er
88.It Bq Er ENOENT
89The file was not found (probably not loaded).
90.It Bq Er EINVAL
91The version specified in the
92.Va version
93field of stat is not the proper version.  You would need to rebuild world, the
94kernel, or your application, if this error occurs, given that you did properly
95fill in the
96.Va version
97field.
98.It Bq Er EFAULT
99There was a problem copying one, some, or all of the fields into
100.Va stat
101in the
102.Fn copyout
103function.
104.Sh SEE ALSO
105.Xr kldfind 2 ,
106.Xr kldfirstmod 2 ,
107.Xr kldload 2 ,
108.Xr kldnext 2 ,
109.Xr kldunload 2 ,
110.Xr kld 4 ,
111.Xr kldstat 8
112.Sh HISTORY
113The
114.Nm kld
115interface first appeared in
116.Fx 3.0 .
117