/*
* MPALMOSTSAFE
*/
int
sys_modfnext(struct modfnext_args *uap)
{
module_t mod;
int error;
lwkt_gettoken(&mod_token);
uap->sysmsg_result = -1;
mod = module_lookupbyid(uap->modid);
if (!mod) {
error = ENOENT;
goto done;
}
if (TAILQ_NEXT(mod, flink))
uap->sysmsg_result = TAILQ_NEXT(mod, flink)->id;
else
uap->sysmsg_result = 0;
error = 0;
done:
lwkt_reltoken(&mod_token);
return error;
}
/*
* Syscalls.
*/
int
modnext(struct proc* p, struct modnext_args* uap)
{
module_t mod;
p->p_retval[0] = -1;
if (SCARG(uap, modid) == 0) {
mod = TAILQ_FIRST(&modules);
if (mod) {
p->p_retval[0] = mod->id;
return 0;
} else
return ENOENT;
}
mod = module_lookupbyid(SCARG(uap, modid));
if (!mod)
return ENOENT;
if (TAILQ_NEXT(mod, link))
p->p_retval[0] = TAILQ_NEXT(mod, link)->id;
else
p->p_retval[0] = 0;
return 0;
}
/*
* MPALMOSTSAFE
*/
int
sys_modstat(struct modstat_args *uap)
{
module_t mod;
int error;
int namelen;
int version;
struct module_stat* stat;
lwkt_gettoken(&mod_token);
mod = module_lookupbyid(uap->modid);
if (!mod) {
error = ENOENT;
goto out;
}
stat = uap->stat;
/*
* Check the version of the user's structure.
*/
if ((error = copyin(&stat->version, &version, sizeof(version))) != 0)
goto out;
if (version != sizeof(struct module_stat_v1)
&& version != sizeof(struct module_stat)) {
error = EINVAL;
goto out;
}
namelen = strlen(mod->name) + 1;
if (namelen > MAXMODNAME)
namelen = MAXMODNAME;
if ((error = copyout(mod->name, &stat->name[0], namelen)) != 0)
goto out;
if ((error = copyout(&mod->refs, &stat->refs, sizeof(int))) != 0)
goto out;
if ((error = copyout(&mod->id, &stat->id, sizeof(int))) != 0)
goto out;
/*
* >v1 stat includes module data.
*/
if (version == sizeof(struct module_stat)) {
if ((error = copyout(&mod->data, &stat->data, sizeof(mod->data))) != 0)
goto out;
}
uap->sysmsg_result = 0;
out:
lwkt_reltoken(&mod_token);
return error;
}
int
modstat(struct proc* p, struct modstat_args* uap)
{
module_t mod;
int error = 0;
int namelen;
int version;
struct module_stat* stat;
mod = module_lookupbyid(SCARG(uap, modid));
if (!mod)
return ENOENT;
stat = SCARG(uap, stat);
/*
* Check the version of the user's structure.
*/
if ((error = copyin(&stat->version, &version, sizeof(version))) != 0)
goto out;
if (version != sizeof(struct module_stat_v1)
&& version != sizeof(struct module_stat)) {
error = EINVAL;
goto out;
}
namelen = strlen(mod->name) + 1;
if (namelen > MAXMODNAME)
namelen = MAXMODNAME;
if ((error = copyout(mod->name, &stat->name[0], namelen)) != 0)
goto out;
if ((error = copyout(&mod->refs, &stat->refs, sizeof(int))) != 0)
goto out;
if ((error = copyout(&mod->id, &stat->id, sizeof(int))) != 0)
goto out;
/*
* >v1 stat includes module data.
*/
if (version == sizeof(struct module_stat)) {
if ((error = copyout(&mod->data, &stat->data, sizeof(mod->data))) != 0)
goto out;
}
p->p_retval[0] = 0;
out:
return error;
}
int
modfnext(struct proc* p, struct modfnext_args* uap)
{
module_t mod;
p->p_retval[0] = -1;
mod = module_lookupbyid(SCARG(uap, modid));
if (!mod)
return ENOENT;
if (TAILQ_NEXT(mod, flink))
p->p_retval[0] = TAILQ_NEXT(mod, flink)->id;
else
p->p_retval[0] = 0;
return 0;
}