xref: /f-stack/tools/compat/sysctlbyname.c (revision df6ad731)
1 /*
2  * ----------------------------------------------------------------------------
3  * "THE BEER-WARE LICENSE" (Revision 42):
4  * <[email protected]> wrote this file.  As long as you retain this notice you
5  * can do whatever you want with this stuff. If we meet some day, and you think
6  * this stuff is worth it, you can buy me a beer in return.   Poul-Henning Kamp
7  * ----------------------------------------------------------------------------
8  *
9  */
10 
11 #include <sys/cdefs.h>
12 #ifndef FSTACK
13 __FBSDID("$FreeBSD$");
14 #endif
15 
16 #include <sys/types.h>
17 #include <sys/sysctl.h>
18 
19 int
sysctlbyname(const char * name,void * oldp,size_t * oldlenp,const void * newp,size_t newlen)20 sysctlbyname(const char *name, void *oldp, size_t *oldlenp,
21     const void *newp, size_t newlen)
22 {
23 	int real_oid[CTL_MAXNAME+2];
24 	size_t oidlen;
25 
26 	oidlen = sizeof(real_oid) / sizeof(int);
27 	if (sysctlnametomib(name, real_oid, &oidlen) < 0)
28 		return (-1);
29 	return (sysctl(real_oid, oidlen, oldp, oldlenp, newp, newlen));
30 }
31