int
linux_semctl(struct thread *td, struct linux_semctl_args *args)
{
struct l_semid_ds linux_semid;
struct l_seminfo linux_seminfo;
struct semid_ds semid;
union semun semun;
register_t rval;
int cmd, error;
switch (args->cmd & ~LINUX_IPC_64) {
case LINUX_IPC_RMID:
cmd = IPC_RMID;
break;
case LINUX_GETNCNT:
cmd = GETNCNT;
break;
case LINUX_GETPID:
cmd = GETPID;
break;
case LINUX_GETVAL:
cmd = GETVAL;
break;
case LINUX_GETZCNT:
cmd = GETZCNT;
break;
case LINUX_SETVAL:
cmd = SETVAL;
semun.val = args->arg.val;
break;
case LINUX_IPC_SET:
cmd = IPC_SET;
error = linux_semid_pullup(args->cmd & LINUX_IPC_64,
&linux_semid, PTRIN(args->arg.buf));
if (error)
return (error);
linux_to_bsd_semid_ds(&linux_semid, &semid);
semun.buf = &semid;
return (kern_semctl(td, args->semid, args->semnum, cmd, &semun,
td->td_retval));
case LINUX_IPC_STAT:
case LINUX_SEM_STAT:
if ((args->cmd & ~LINUX_IPC_64) == LINUX_IPC_STAT)
cmd = IPC_STAT;
else
cmd = SEM_STAT;
semun.buf = &semid;
error = kern_semctl(td, args->semid, args->semnum, cmd, &semun,
&rval);
if (error)
return (error);
bsd_to_linux_semid_ds(&semid, &linux_semid);
error = linux_semid_pushdown(args->cmd & LINUX_IPC_64,
&linux_semid, PTRIN(args->arg.buf));
if (error == 0)
td->td_retval[0] = (cmd == SEM_STAT) ? rval : 0;
return (error);
case LINUX_IPC_INFO:
case LINUX_SEM_INFO:
bcopy(&seminfo, &linux_seminfo, sizeof(linux_seminfo) );
/* XXX BSD equivalent?
#define used_semids 10
#define used_sems 10
linux_seminfo.semusz = used_semids;
linux_seminfo.semaem = used_sems;
*/
error = copyout(&linux_seminfo,
PTRIN(args->arg.buf), sizeof(linux_seminfo));
if (error)
return error;
td->td_retval[0] = seminfo.semmni;
return 0; /* No need for __semctl call */
case LINUX_GETALL:
cmd = GETALL;
semun.val = args->arg.val;
break;
case LINUX_SETALL:
cmd = SETALL;
semun.val = args->arg.val;
break;
default:
linux_msg(td, "ipc type %d is not implemented",
args->cmd & ~LINUX_IPC_64);
return EINVAL;
}
return (kern_semctl(td, args->semid, args->semnum, cmd, &semun,
td->td_retval));
}
int
linux_semctl(struct thread *td, struct linux_semctl_args *args)
{
struct l_semid_ds linux_semid;
struct l_seminfo linux_seminfo;
struct semid_ds semid;
union semun semun;
register_t rval;
int cmd, error;
switch (args->cmd & ~LINUX_IPC_64) {
case LINUX_IPC_RMID:
cmd = IPC_RMID;
break;
case LINUX_GETNCNT:
cmd = GETNCNT;
break;
case LINUX_GETPID:
cmd = GETPID;
break;
case LINUX_GETVAL:
cmd = GETVAL;
break;
case LINUX_GETZCNT:
cmd = GETZCNT;
break;
case LINUX_SETVAL:
cmd = SETVAL;
semun.val = args->arg.val;
break;
case LINUX_IPC_SET:
cmd = IPC_SET;
error = linux_semid_pullup(args->cmd & LINUX_IPC_64,
&linux_semid, PTRIN(args->arg.buf));
if (error)
return (error);
linux_to_bsd_semid_ds(&linux_semid, &semid);
semun.buf = &semid;
return (kern_semctl(td, args->semid, args->semnum, cmd, &semun,
td->td_retval));
case LINUX_IPC_STAT:
case LINUX_SEM_STAT:
if ((args->cmd & ~LINUX_IPC_64) == LINUX_IPC_STAT)
cmd = IPC_STAT;
else
cmd = SEM_STAT;
semun.buf = &semid;
error = kern_semctl(td, args->semid, args->semnum, cmd, &semun,
&rval);
if (error)
return (error);
bsd_to_linux_semid_ds(&semid, &linux_semid);
error = linux_semid_pushdown(args->cmd & LINUX_IPC_64,
&linux_semid, PTRIN(args->arg.buf));
if (error == 0)
td->td_retval[0] = (cmd == SEM_STAT) ? rval : 0;
return (error);
case LINUX_IPC_INFO:
case LINUX_SEM_INFO:
bcopy(&seminfo, &linux_seminfo.semmni, sizeof(linux_seminfo) -
sizeof(linux_seminfo.semmap) );
/*
* Linux does not use the semmap field but populates it with
* the defined value from SEMMAP, which really is redefined to
* SEMMNS, which they define as SEMMNI * SEMMSL. Try to
* simulate this returning our dynamic semmns value.
*/
linux_seminfo.semmap = linux_seminfo.semmns;
/* XXX BSD equivalent?
#define used_semids 10
#define used_sems 10
linux_seminfo.semusz = used_semids;
linux_seminfo.semaem = used_sems;
*/
error = copyout(&linux_seminfo,
PTRIN(args->arg.buf), sizeof(linux_seminfo));
if (error)
return (error);
td->td_retval[0] = seminfo.semmni;
return (0); /* No need for __semctl call */
case LINUX_GETALL:
cmd = GETALL;
semun.val = args->arg.val;
break;
case LINUX_SETALL:
cmd = SETALL;
semun.val = args->arg.val;
break;
default:
linux_msg(td, "ipc type %d is not implemented",
args->cmd & ~LINUX_IPC_64);
return (EINVAL);
}
return (kern_semctl(td, args->semid, args->semnum, cmd, &semun,
td->td_retval));
}
