36 lines
1.0 KiB
C
36 lines
1.0 KiB
C
/*
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* ----------------------------------------------------------------------------
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* "THE BEER-WARE LICENSE" (Revision 42):
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* <phk@FreeBSD.org> wrote this file. As long as you retain this notice you
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* can do whatever you want with this stuff. If we meet some day, and you think
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* this stuff is worth it, you can buy me a beer in return. Poul-Henning Kamp
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* ----------------------------------------------------------------------------
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*
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* $Id: sysctlbyname.c,v 1.1 1997/05/30 20:53:13 phk Exp $
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*
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*/
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#include <sys/types.h>
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#include <sys/sysctl.h>
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int
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sysctlbyname(const char *name, void *oldp, size_t *oldlenp, void *newp,
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size_t newlen)
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{
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int name2oid_oid[2];
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int real_oid[CTL_MAXNAME+2];
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int error, oidlen;
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name2oid_oid[0] = 0; /* This is magic & undocumented! */
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name2oid_oid[1] = 3;
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oidlen = sizeof(real_oid);
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error = sysctl(name2oid_oid, 2, real_oid, &oidlen, (void *)name,
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strlen(name));
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if (error < 0)
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return error;
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oidlen /= sizeof (int);
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error = sysctl(real_oid, oidlen, oldp, oldlenp, newp, newlen);
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return (error);
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}
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