int
sys_ipc_sendmsg (u_int sn, u_int k, u_int envid, u_int sz, u_int addr)
{
int r;
// unsigned char msg[IPC_MAX_MSG_SIZE];
struct Env *e;
extern int msgring_handlemsg(struct Env *, int sz, unsigned char *);
if (sz == 0)
return -E_INVAL;
if (sz > IPC_MAX_MSG_SIZE)
return -E_INVAL;
if (!(e = env_id2env (envid, &r)))
return -E_BAD_ENV;
if (e->msgring == NULL)
return -E_NO_MSGRING;
// copyin((void*)addr, &msg[0], sz);
MP_SPINLOCK_GET(&e->env_spinlock);
r = msgring_handlemsg(e, sz, (unsigned char *)addr);
MP_SPINLOCK_RELEASE (&e->env_spinlock);
return r;
}
int
ShareAshRegion(u_int k, int envid) {
/* printf("ShareAshRegion sz: %d\n",sizeof(struct ash_sh_network)); */
if (__vm_share_region(ADD_UVA(ASH_PKT_DATA_ADDR),
sizeof(struct ash_sh_network), k, k, envid,
ASH_PKT_DATA_ADDR + env_id2env(envid)->env_ashuva)
< 0) {
sys_env_free (k, envid);
kprintf("ShareAshRegion: __vm_share_region failed\n");
return (-1);
}
return 0;
}
void
disk_buf_free (struct buf *bp)
{
u_int datalen;
u_int data, next;
/* unpin pages */
if (bp->b_flags & B_SCSICMD) {
struct scsicmd *scsicmd = (struct scsicmd *) bp->b_memaddr;
data = (u_int) scsicmd->data_addr;
datalen = scsicmd->datalen;
free (scsicmd->scsi_cmd);
free (scsicmd);
} else {
data = (u_int)bp->b_memaddr;
datalen = bp->b_bcount;
}
while (datalen > 0) {
if (bp->b_flags & B_BC_REQ) {
ppage_unpin (kva2pp (data));
} else {
struct Env *e;
int r;
e = env_id2env (bp->b_envid, &r);
assert (e); /* XXX - what if an env with an outstanding request dies? */
ppage_unpin (&ppages[PGNO (*env_va2ptep (e, data))]);
}
/* go to start of next page of data */
next = (data & ~PGMASK) + NBPG;
if (next - data >= datalen) break;
assert (next > data);
datalen -= next - data;
data = next;
}
if (bp->b_resptr) {
ppage_unpin (kva2pp ((u_int) bp->b_resptr));
}
free (bp);
}
