/*
* Called once to initialize data structures...
*/
static int
nfssvc_modevent(module_t mod, int type, void *data)
{
int error = 0;
switch (type) {
case MOD_LOAD:
error = syscall_helper_register(nfssvc_syscalls,
SY_THR_STATIC_KLD);
break;
case MOD_UNLOAD:
if (nfsd_call_nfsserver != NULL || nfsd_call_nfscommon != NULL
|| nfsd_call_nfscl != NULL || nfsd_call_nfsd != NULL) {
error = EBUSY;
break;
}
syscall_helper_unregister(nfssvc_syscalls);
break;
default:
error = EOPNOTSUPP;
break;
}
return error;
}
static void
ksem_module_destroy(void)
{
#ifdef COMPAT_FREEBSD32
syscall32_helper_unregister(ksem32_syscalls);
#endif
syscall_helper_unregister(ksem_syscalls);
hashdestroy(ksem_dictionary, M_KSEM, ksem_hash);
sx_destroy(&ksem_dict_lock);
mtx_destroy(&ksem_count_lock);
mtx_destroy(&sem_lock);
p31b_unsetcfg(CTL_P1003_1B_SEM_VALUE_MAX);
p31b_unsetcfg(CTL_P1003_1B_SEM_NSEMS_MAX);
}
int
syscall_helper_register(struct syscall_helper_data *sd, int flags)
{
struct syscall_helper_data *sd1;
int error;
for (sd1 = sd; sd1->syscall_no != NO_SYSCALL; sd1++) {
error = syscall_register(&sd1->syscall_no, &sd1->new_sysent,
&sd1->old_sysent, flags);
if (error != 0) {
syscall_helper_unregister(sd);
return (error);
}
sd1->registered = 1;
}
return (0);
}
static int
msgunload()
{
struct msqid_kernel *msqkptr;
int msqid;
#ifdef MAC
int i;
#endif
syscall_helper_unregister(msg_syscalls);
#ifdef COMPAT_FREEBSD32
syscall32_helper_unregister(msg32_syscalls);
#endif
for (msqid = 0; msqid < msginfo.msgmni; msqid++) {
/*
* Look for an unallocated and unlocked msqid_ds.
* msqid_ds's can be locked by msgsnd or msgrcv while
* they are copying the message in/out. We can't
* re-use the entry until they release it.
*/
msqkptr = &msqids[msqid];
if (msqkptr->u.msg_qbytes != 0 ||
(msqkptr->u.msg_perm.mode & MSG_LOCKED) != 0)
break;
}
if (msqid != msginfo.msgmni)
return (EBUSY);
#ifdef MAC
for (i = 0; i < msginfo.msgtql; i++)
mac_sysvmsg_destroy(&msghdrs[i]);
for (msqid = 0; msqid < msginfo.msgmni; msqid++)
mac_sysvmsq_destroy(&msqids[msqid]);
#endif
free(msgpool, M_MSG);
free(msgmaps, M_MSG);
free(msghdrs, M_MSG);
free(msqids, M_MSG);
mtx_destroy(&msq_mtx);
return (0);
}
