int
linux_shmctl(struct proc *p, struct linux_shmctl_args *args)
{
struct shmid_ds bsd_shmid;
struct linux_shmid_ds linux_shmid;
struct shmctl_args /* {
int shmid;
int cmd;
struct shmid_ds *buf;
} */ bsd_args;
int error;
caddr_t sg = stackgap_init();
switch (args->arg2) {
case LINUX_IPC_STAT:
bsd_args.shmid = args->arg1;
bsd_args.cmd = IPC_STAT;
bsd_args.buf = (struct shmid_ds*)stackgap_alloc(&sg, sizeof(struct shmid_ds));
if ((error = shmctl(p, &bsd_args)))
return error;
if ((error = copyin((caddr_t)bsd_args.buf, (caddr_t)&bsd_shmid,
sizeof(struct shmid_ds))))
return error;
bsd_to_linux_shmid_ds(&bsd_shmid, &linux_shmid);
return copyout((caddr_t)&linux_shmid, args->ptr, sizeof(linux_shmid));
case LINUX_IPC_SET:
if ((error = copyin(args->ptr, (caddr_t)&linux_shmid,
sizeof(linux_shmid))))
return error;
linux_to_bsd_shmid_ds(&linux_shmid, &bsd_shmid);
bsd_args.buf = (struct shmid_ds*)stackgap_alloc(&sg, sizeof(struct shmid_ds));
if ((error = copyout((caddr_t)&bsd_shmid, (caddr_t)bsd_args.buf,
sizeof(struct shmid_ds))))
return error;
bsd_args.shmid = args->arg1;
bsd_args.cmd = IPC_SET;
return shmctl(p, &bsd_args);
case LINUX_IPC_RMID:
bsd_args.shmid = args->arg1;
bsd_args.cmd = IPC_RMID;
if (NULL == args->ptr)
bsd_args.buf = NULL;
else {
if ((error = copyin(args->ptr, (caddr_t)&linux_shmid,
sizeof(linux_shmid))))
return error;
linux_to_bsd_shmid_ds(&linux_shmid, &bsd_shmid);
bsd_args.buf = (struct shmid_ds*)stackgap_alloc(&sg, sizeof(struct shmid_ds));
if ((error = copyout((caddr_t)&bsd_shmid, (caddr_t)bsd_args.buf,
sizeof(struct shmid_ds))))
return error;
}
return shmctl(p, &bsd_args);
case LINUX_IPC_INFO:
case LINUX_SHM_STAT:
case LINUX_SHM_INFO:
case LINUX_SHM_LOCK:
case LINUX_SHM_UNLOCK:
default:
uprintf("LINUX: 'ipc' typ=%d not implemented\n", args->arg2);
return EINVAL;
}
}
int
linux_shmctl(struct thread *td, struct linux_shmctl_args *args)
{
struct l_shmid_ds linux_shmid;
struct l_shminfo linux_shminfo;
struct l_shm_info linux_shm_info;
struct shmid_ds bsd_shmid;
int error;
switch (args->cmd & ~LINUX_IPC_64) {
case LINUX_IPC_INFO: {
struct shminfo bsd_shminfo;
/* Perform shmctl wanting removed segments lookup */
error = kern_shmctl(td, args->shmid, IPC_INFO,
(void *)&bsd_shminfo, NULL);
if (error)
return error;
bsd_to_linux_shminfo(&bsd_shminfo, &linux_shminfo);
return (linux_shminfo_pushdown(args->cmd & LINUX_IPC_64,
&linux_shminfo, PTRIN(args->buf)));
}
case LINUX_SHM_INFO: {
struct shm_info bsd_shm_info;
/* Perform shmctl wanting removed segments lookup */
error = kern_shmctl(td, args->shmid, SHM_INFO,
(void *)&bsd_shm_info, NULL);
if (error)
return error;
bsd_to_linux_shm_info(&bsd_shm_info, &linux_shm_info);
return copyout(&linux_shm_info, PTRIN(args->buf),
sizeof(struct l_shm_info));
}
case LINUX_IPC_STAT:
/* Perform shmctl wanting removed segments lookup */
error = kern_shmctl(td, args->shmid, IPC_STAT,
(void *)&bsd_shmid, NULL);
if (error)
return error;
bsd_to_linux_shmid_ds(&bsd_shmid, &linux_shmid);
return (linux_shmid_pushdown(args->cmd & LINUX_IPC_64,
&linux_shmid, PTRIN(args->buf)));
case LINUX_SHM_STAT:
/* Perform shmctl wanting removed segments lookup */
error = kern_shmctl(td, args->shmid, IPC_STAT,
(void *)&bsd_shmid, NULL);
if (error)
return error;
bsd_to_linux_shmid_ds(&bsd_shmid, &linux_shmid);
return (linux_shmid_pushdown(args->cmd & LINUX_IPC_64,
&linux_shmid, PTRIN(args->buf)));
case LINUX_IPC_SET:
error = linux_shmid_pullup(args->cmd & LINUX_IPC_64,
&linux_shmid, PTRIN(args->buf));
if (error)
return error;
linux_to_bsd_shmid_ds(&linux_shmid, &bsd_shmid);
/* Perform shmctl wanting removed segments lookup */
return kern_shmctl(td, args->shmid, IPC_SET,
(void *)&bsd_shmid, NULL);
case LINUX_IPC_RMID: {
void *buf;
if (args->buf == 0)
buf = NULL;
else {
error = linux_shmid_pullup(args->cmd & LINUX_IPC_64,
&linux_shmid, PTRIN(args->buf));
if (error)
return error;
linux_to_bsd_shmid_ds(&linux_shmid, &bsd_shmid);
buf = (void *)&bsd_shmid;
}
return kern_shmctl(td, args->shmid, IPC_RMID, buf, NULL);
}
case LINUX_SHM_LOCK:
case LINUX_SHM_UNLOCK:
default:
linux_msg(td, "ipc typ=%d not implemented", args->cmd & ~LINUX_IPC_64);
return EINVAL;
}
}
