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/* $NetBSD: kver.c,v 1.2 2003/09/30 19:13:30 seb Exp $ */
#include <sys/types.h>
#include <sys/param.h>
#include <sys/sysctl.h>
#include <sys/utsname.h>
#include <assert.h>
#include <errno.h>
#include <string.h>
#define KVER_VERSION_FMT "NetBSD %.6s (GENERIC) #0: %.40s root@localhost:/sys/arch/%.20s/compile/GENERIC"
/* _KVER_DATE is not really the real release date but the
date of src/sys/sys/param.h's revision tagged for the release */
#if _KVER_OSREVISION == 105000000
# define _KVER_OSRELEASE "1.5"
# define _KVER_DATE "Wed Dec 6 00:00:00 UTC 2000"
#elif _KVER_OSREVISION == 105000100
# define _KVER_OSRELEASE "1.5.1"
# define _KVER_DATE "Wed Jul 11 00:00:00 UTC 2001"
#elif _KVER_OSREVISION == 105000200
# define _KVER_OSRELEASE "1.5.2"
# define _KVER_DATE "Thu Sep 13 00:00:00 UTC 2001"
#elif _KVER_OSREVISION == 105000300
# define _KVER_OSRELEASE "1.5.3"
# define _KVER_DATE "Mon Jul 22 00:00:00 UTC 2002"
#elif _KVER_OSREVISION == 106000000
# define _KVER_OSRELEASE "1.6"
# define _KVER_DATE "Sat Sep 14 00:00:00 UTC 2002"
#elif _KVER_OSREVISION == 106000100
# define _KVER_OSRELEASE "1.6.1";
# define _KVER_DATE "Mon Apr 21 00:00:00 UTC 2003"
#else
#error You must define _KVER_OSREVISION
#endif
static char *kver_osrelease = _KVER_OSRELEASE;
static char *kver_date = _KVER_DATE;
static int kver_osrevision = _KVER_OSREVISION;
#define SYSCTL_STRING(oldp, oldlenp, str) \
if (oldlenp) { \
len = strlen(str) + 1; \
if (!oldp) \
*oldlenp = len; \
else { \
if (*oldlenp < len) { \
r = ENOMEM; \
len = *oldlenp; \
} else \
*oldlenp = len; \
(void) strncpy(oldp, str, len); \
} \
}
/* 6 chars for osrelease */
/* 40 chars for the date string */
/* 20 chars for utsname.machine */
#define KVER_VERSION_LEN (sizeof(KVER_VERSION_FMT) + 6 + 40 + 20 + 1)
static char kver_version[KVER_VERSION_LEN] = "";
static struct utsname real_utsname;
static void
kver_init(void)
{
if (_uname(&real_utsname) != 0)
return;
snprintf(kver_version, KVER_VERSION_LEN, KVER_VERSION_FMT,
kver_osrelease,
kver_date,
real_utsname.machine);
}
int
sysctl(int *name, u_int namelen, void *oldp, size_t * oldlenp, const void *newp,
size_t newlen)
{
_DIAGASSERT(name != NULL);
if (newp != (void *) NULL)
goto real;
if (namelen != 2) {
errno = EINVAL;
return (-1);
}
if (*kver_version == '\0') {
kver_init();
if (*kver_version == '\0')
return(-1);
}
if (name[0] == CTL_KERN) {
size_t len;
int r = 0;
switch (name[1]) {
case KERN_OSRELEASE:
SYSCTL_STRING(oldp, oldlenp, kver_osrelease);
return (r);
case KERN_OSREV:
if (oldlenp) {
if (!oldp)
*oldlenp = sizeof(int);
else {
if (*oldlenp < sizeof(int))
return (ENOMEM);
*oldlenp = sizeof(int);
*((int *) oldp) = kver_osrevision;
}
}
return (r);
case KERN_VERSION:
SYSCTL_STRING(oldp, oldlenp, kver_version);
return (r);
}
}
real: return (_sysctl(name, namelen, oldp, oldlenp, newp, newlen));
}
int
uname(struct utsname * n)
{
if (*kver_version == '\0') {
kver_init();
if (*kver_version == '\0')
return(-1);
}
(void) strncpy(n->sysname, real_utsname.sysname, _SYS_NMLN);
(void) strncpy(n->nodename, real_utsname.nodename, _SYS_NMLN);
(void) strncpy(n->release, kver_osrelease, _SYS_NMLN);
(void) strncpy(n->version, kver_version, _SYS_NMLN);
(void) strncpy(n->machine, real_utsname.machine, _SYS_NMLN);
return 0;
}
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