int
sys_osethostname(struct sethostname_args *uap)
{
struct thread *td = curthread;
size_t len;
char *hostname;
int name[2];
int error;
name[0] = CTL_KERN;
name[1] = KERN_HOSTNAME;
error = priv_check_cred(td->td_ucred, PRIV_SETHOSTNAME, 0);
if (error)
return (error);
len = MIN(uap->len, MAXHOSTNAMELEN);
hostname = kmalloc(MAXHOSTNAMELEN, M_TEMP, M_WAITOK);
error = copyin(uap->hostname, hostname, len);
if (error) {
kfree(hostname, M_TEMP);
return (error);
}
error = kernel_sysctl(name, 2, NULL, 0, hostname, len, NULL);
kfree(hostname, M_TEMP);
return (error);
}
/* ARGSUSED */
int
osethostid(struct thread *td, struct osethostid_args *uap)
{
int name[2];
name[0] = CTL_KERN;
name[1] = KERN_HOSTID;
return (kernel_sysctl(td, name, 2, NULL, NULL, &uap->hostid,
sizeof(uap->hostid), NULL, 0));
}
/* ARGSUSED */
int
ogethostid(struct thread *td, struct ogethostid_args *uap)
{
size_t len = sizeof(long);
int name[2];
name[0] = CTL_KERN;
name[1] = KERN_HOSTID;
return (kernel_sysctl(td, name, 2, (long *)td->td_retval, &len,
NULL, 0, NULL, 0));
}
/*ARGSUSED*/
int
nwfs_init(struct vfsconf *vfsp)
{
#ifndef SMP
int name[2];
int ncpu, error;
size_t olen, plen;
name[0] = CTL_HW;
name[1] = HW_NCPU;
error = kernel_sysctl(name, 2, &ncpu, &olen, NULL, 0, &plen);
if (error == 0 && ncpu > 1)
kprintf("warning: nwfs module compiled without SMP support.");
#endif
nwfs_hash_init();
nwfs_pbuf_freecnt = nswbuf / 2 + 1;
NCPVODEBUG("always happy to load!\n");
return (0);
}
int
sys_ogethostname(struct gethostname_args *uap)
{
size_t len;
char *hostname;
int error, name[2];
name[0] = CTL_KERN;
name[1] = KERN_HOSTNAME;
len = MIN(uap->len, MAXHOSTNAMELEN);
hostname = kmalloc(MAXHOSTNAMELEN, M_TEMP, M_WAITOK);
error = kernel_sysctl(name, 2, hostname, &len, NULL, 0, NULL);
if (error == 0)
error = copyout(hostname, uap->hostname, len);
kfree(hostname, M_TEMP);
return (error);
}
int
smb_checksmp(void)
{
int name[2];
int olen, ncpu, plen, error;
name[0] = CTL_HW;
name[1] = HW_NCPU;
error = kernel_sysctl(curproc, name, 2, &ncpu, &olen, NULL, 0, &plen);
if (error)
return error;
#ifndef SMP
if (ncpu > 1) {
printf("error: module compiled without SMP support\n");
return EPERM;
}
#else
if (ncpu < 2) {
printf("warning: only one CPU active on in SMP kernel ?\n");
}
#endif
return 0;
}
int sysctl(
const int *name,
u_int namelen,
void *oldp,
size_t *oldlenp,
const void *newp,
size_t newlen
)
{
int eno = EINVAL;
if (namelen <= CTL_MAXNAME) {
int namedup [CTL_MAXNAME];
memcpy(namedup, name, namelen * sizeof(*name));
eno = kernel_sysctl(
NULL,
namedup,
namelen,
oldp,
oldlenp,
newp,
newlen,
oldlenp,
0
);
}
if (eno == 0) {
return 0;
} else {
errno = eno;
return -1;
}
}
static int
est_init(void)
{
char hwmodel[128];
int mib[] = { CTL_HW, HW_MODEL };
size_t modellen = sizeof(hwmodel);
struct sysctl_oid *oid, *leaf;
uint64_t msr;
int mv;
size_t len, freq_len;
int err;
size_t i;
if ((cpu_feature2 & CPUID2_EST) == 0) {
kprintf("Enhanced SpeedStep unsupported on this hardware.\n");
return(EOPNOTSUPP);
}
modellen = sizeof(hwmodel);
err = kernel_sysctl(mib, 2, hwmodel, &modellen, NULL, 0, NULL);
if (err) {
kprintf("kernel_sysctl hw.model failed\n");
return(err);
}
msr = rdmsr(MSR_PERF_STATUS);
mv = MSR2MV(msr);
kprintf("%s (%d mV) ", est_desc, mv);
est_fqlist = findcpu(hwmodel, mv);
if (est_fqlist == NULL) {
kprintf(" - unknown CPU or operating point"
"(cpu_id:%#x, msr:%#jx).\n", cpu_id, (intmax_t)msr);
return(EOPNOTSUPP);
}
/*
* OK, tell the user the available frequencies.
*/
fsbmult = est_fqlist->fsbmult;
kprintf("%d MHz\n", MSR2MHZ(msr));
freq_len = est_fqlist->tablec * (sizeof("9999 ")-1) + 1;
if (freq_len >= sizeof(freqs_available)) {
kprintf("increase the size of freqs_available[]\n");
return(ENOMEM);
}
freqs_available[0] = '\0';
len = 0;
for (i = 0; i < est_fqlist->tablec; i++) {
len += ksnprintf(freqs_available + len, freq_len - len, "%d%s",
est_fqlist->table[i].mhz,
i < est_fqlist->tablec - 1 ? " " : "");
}
kprintf("%s frequencies available (MHz): %s\n", est_desc,
freqs_available);
/*
* Setup the sysctl sub-tree machdep.est.*
*/
oid = SYSCTL_ADD_NODE(&machdep_est_ctx,
SYSCTL_STATIC_CHILDREN(_machdep), OID_AUTO, "est",
CTLFLAG_RD, NULL, "");
if (oid == NULL)
return(EOPNOTSUPP);
oid = SYSCTL_ADD_NODE(&machdep_est_ctx, SYSCTL_CHILDREN(oid),
OID_AUTO, "frequency", CTLFLAG_RD, NULL, "");
if (oid == NULL)
return(EOPNOTSUPP);
leaf = SYSCTL_ADD_PROC(&machdep_est_ctx, SYSCTL_CHILDREN(oid),
OID_AUTO, "target", CTLTYPE_INT | CTLFLAG_RW, NULL, 0,
est_sysctl_helper, "I",
"Target CPU frequency for Enhanced SpeedStep");
if (leaf == NULL)
return(EOPNOTSUPP);
leaf = SYSCTL_ADD_PROC(&machdep_est_ctx, SYSCTL_CHILDREN(oid),
OID_AUTO, "current", CTLTYPE_INT | CTLFLAG_RD, NULL, 0,
est_sysctl_helper, "I",
"Current CPU frequency for Enhanced SpeedStep");
if (leaf == NULL)
return(EOPNOTSUPP);
leaf = SYSCTL_ADD_STRING(&machdep_est_ctx, SYSCTL_CHILDREN(oid),
OID_AUTO, "available", CTLFLAG_RD, freqs_available,
sizeof(freqs_available),
"CPU frequencies supported by Enhanced SpeedStep");
if (leaf == NULL)
return(EOPNOTSUPP);
return(0);
}