38 lines
1.0 KiB
C
38 lines
1.0 KiB
C
/*
|
|
* ----------------------------------------------------------------------------
|
|
* "THE BEER-WARE LICENSE" (Revision 42):
|
|
* <phk@FreeBSD.org> wrote this file. As long as you retain this notice you
|
|
* can do whatever you want with this stuff. If we meet some day, and you think
|
|
* this stuff is worth it, you can buy me a beer in return. Poul-Henning Kamp
|
|
* ----------------------------------------------------------------------------
|
|
*
|
|
* $FreeBSD$
|
|
*
|
|
*/
|
|
#include <sys/types.h>
|
|
#include <sys/sysctl.h>
|
|
#include <string.h>
|
|
|
|
int
|
|
sysctlbyname(const char *name, void *oldp, size_t *oldlenp, void *newp,
|
|
size_t newlen)
|
|
{
|
|
int name2oid_oid[2];
|
|
int real_oid[CTL_MAXNAME+2];
|
|
int error;
|
|
size_t oidlen;
|
|
|
|
name2oid_oid[0] = 0; /* This is magic & undocumented! */
|
|
name2oid_oid[1] = 3;
|
|
|
|
oidlen = sizeof(real_oid);
|
|
error = sysctl(name2oid_oid, 2, real_oid, &oidlen, (void *)name,
|
|
strlen(name));
|
|
if (error < 0)
|
|
return error;
|
|
oidlen /= sizeof (int);
|
|
error = sysctl(real_oid, oidlen, oldp, oldlenp, newp, newlen);
|
|
return (error);
|
|
}
|
|
|