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.