sys_sunos32.c

linux-2.6.15.6

			arg3=GETPID; break;
		case 5:
			arg3=GETVAL; break;
		case 6:
			arg3=GETALL; break;
		case 3:
			arg3=GETNCNT; break;
		case 7:
			arg3=GETZCNT; break;
		case 8:
			arg3=SETVAL; break;
		case 9:
			arg3=SETALL; break;
		}
		/* sys_semctl(): */
		/* value to modify semaphore to */
		arg4.__pad = ptr;
		ret = sys_semctl((int)arg1, (int)arg2, (int)arg3, arg4);
		break;
	case 1:
		/* sys_semget(): */
		ret = sys_semget((key_t)arg1, (int)arg2, (int)arg3);
		break;
	case 2:
		/* sys_semop(): */
		ret = sys_semop((int)arg1, (struct sembuf __user *)(unsigned long)arg2,
				(unsigned int) arg3);
		break;
	default:
		ret = -EINVAL;
		break;
	};
	return ret;
}

struct msgbuf32 {
	s32 mtype;
	char mtext[1];
};

struct ipc_perm32
{
	key_t    	  key;
        compat_uid_t  uid;
        compat_gid_t  gid;
        compat_uid_t  cuid;
        compat_gid_t  cgid;
        compat_mode_t mode;
        unsigned short  seq;
};

struct msqid_ds32
{
        struct ipc_perm32 msg_perm;
        u32 msg_first;
        u32 msg_last;
        compat_time_t msg_stime;
        compat_time_t msg_rtime;
        compat_time_t msg_ctime;
        u32 wwait;
        u32 rwait;
        unsigned short msg_cbytes;
        unsigned short msg_qnum;  
        unsigned short msg_qbytes;
        compat_ipc_pid_t msg_lspid;
        compat_ipc_pid_t msg_lrpid;
};

static inline int sunos_msqid_get(struct msqid_ds32 __user *user,
				  struct msqid_ds *kern)
{
	if (get_user(kern->msg_perm.key, &user->msg_perm.key)		||
	    __get_user(kern->msg_perm.uid, &user->msg_perm.uid)		||
	    __get_user(kern->msg_perm.gid, &user->msg_perm.gid)		||
	    __get_user(kern->msg_perm.cuid, &user->msg_perm.cuid)	||
	    __get_user(kern->msg_perm.cgid, &user->msg_perm.cgid)	||
	    __get_user(kern->msg_stime, &user->msg_stime)		||
	    __get_user(kern->msg_rtime, &user->msg_rtime)		||
	    __get_user(kern->msg_ctime, &user->msg_ctime)		||
	    __get_user(kern->msg_ctime, &user->msg_cbytes)		||
	    __get_user(kern->msg_ctime, &user->msg_qnum)		||
	    __get_user(kern->msg_ctime, &user->msg_qbytes)		||
	    __get_user(kern->msg_ctime, &user->msg_lspid)		||
	    __get_user(kern->msg_ctime, &user->msg_lrpid))
		return -EFAULT;
	return 0;
}

static inline int sunos_msqid_put(struct msqid_ds32 __user *user,
				  struct msqid_ds *kern)
{
	if (put_user(kern->msg_perm.key, &user->msg_perm.key)		||
	    __put_user(kern->msg_perm.uid, &user->msg_perm.uid)		||
	    __put_user(kern->msg_perm.gid, &user->msg_perm.gid)		||
	    __put_user(kern->msg_perm.cuid, &user->msg_perm.cuid)	||
	    __put_user(kern->msg_perm.cgid, &user->msg_perm.cgid)	||
	    __put_user(kern->msg_stime, &user->msg_stime)		||
	    __put_user(kern->msg_rtime, &user->msg_rtime)		||
	    __put_user(kern->msg_ctime, &user->msg_ctime)		||
	    __put_user(kern->msg_ctime, &user->msg_cbytes)		||
	    __put_user(kern->msg_ctime, &user->msg_qnum)		||
	    __put_user(kern->msg_ctime, &user->msg_qbytes)		||
	    __put_user(kern->msg_ctime, &user->msg_lspid)		||
	    __put_user(kern->msg_ctime, &user->msg_lrpid))
		return -EFAULT;
	return 0;
}

static inline int sunos_msgbuf_get(struct msgbuf32 __user *user, struct msgbuf *kern, int len)
{
	if (get_user(kern->mtype, &user->mtype)	||
	    __copy_from_user(kern->mtext, &user->mtext, len))
		return -EFAULT;
	return 0;
}

static inline int sunos_msgbuf_put(struct msgbuf32 __user *user, struct msgbuf *kern, int len)
{
	if (put_user(kern->mtype, &user->mtype)	||
	    __copy_to_user(user->mtext, kern->mtext, len))
		return -EFAULT;
	return 0;
}

asmlinkage int sunos_msgsys(int op, u32 arg1, u32 arg2, u32 arg3, u32 arg4)
{
	struct sparc_stackf32 __user *sp;
	struct msqid_ds kds;
	struct msgbuf *kmbuf;
	mm_segment_t old_fs = get_fs();
	u32 arg5;
	int rval;

	switch(op) {
	case 0:
		rval = sys_msgget((key_t)arg1, (int)arg2);
		break;
	case 1:
		if (!sunos_msqid_get((struct msqid_ds32 __user *)(unsigned long)arg3, &kds)) {
			set_fs(KERNEL_DS);
			rval = sys_msgctl((int)arg1, (int)arg2,
					  (struct msqid_ds __user *)(unsigned long)arg3);
			set_fs(old_fs);
			if (!rval)
				rval = sunos_msqid_put((struct msqid_ds32 __user *)(unsigned long)arg3,
						       &kds);
		} else
			rval = -EFAULT;
		break;
	case 2:
		rval = -EFAULT;
		kmbuf = (struct msgbuf *)kmalloc(sizeof(struct msgbuf) + arg3,
						 GFP_KERNEL);
		if (!kmbuf)
			break;
		sp = (struct sparc_stackf32 __user *)
			(current_thread_info()->kregs->u_regs[UREG_FP] & 0xffffffffUL);
		if (get_user(arg5, &sp->xxargs[0])) {
			rval = -EFAULT;
			kfree(kmbuf);
			break;
		}
		set_fs(KERNEL_DS);
		rval = sys_msgrcv((int)arg1, (struct msgbuf __user *) kmbuf,
				  (size_t)arg3,
				  (long)arg4, (int)arg5);
		set_fs(old_fs);
		if (!rval)
			rval = sunos_msgbuf_put((struct msgbuf32 __user *)(unsigned long)arg2,
						kmbuf, arg3);
		kfree(kmbuf);
		break;
	case 3:
		rval = -EFAULT;
		kmbuf = (struct msgbuf *)kmalloc(sizeof(struct msgbuf) + arg3,
						 GFP_KERNEL);
		if (!kmbuf || sunos_msgbuf_get((struct msgbuf32 __user *)(unsigned long)arg2,
					       kmbuf, arg3))
			break;
		set_fs(KERNEL_DS);
		rval = sys_msgsnd((int)arg1, (struct msgbuf __user *) kmbuf,
				  (size_t)arg3, (int)arg4);
		set_fs(old_fs);
		kfree(kmbuf);
		break;
	default:
		rval = -EINVAL;
		break;
	}
	return rval;
}

struct shmid_ds32 {
        struct ipc_perm32       shm_perm;
        int                     shm_segsz;
        compat_time_t         shm_atime;
        compat_time_t         shm_dtime;
        compat_time_t         shm_ctime;
        compat_ipc_pid_t    shm_cpid; 
        compat_ipc_pid_t    shm_lpid; 
        unsigned short          shm_nattch;
};
                                                        
static inline int sunos_shmid_get(struct shmid_ds32 __user *user,
				  struct shmid_ds *kern)
{
	if (get_user(kern->shm_perm.key, &user->shm_perm.key)		||
	    __get_user(kern->shm_perm.uid, &user->shm_perm.uid)		||
	    __get_user(kern->shm_perm.gid, &user->shm_perm.gid)		||
	    __get_user(kern->shm_perm.cuid, &user->shm_perm.cuid)	||
	    __get_user(kern->shm_perm.cgid, &user->shm_perm.cgid)	||
	    __get_user(kern->shm_segsz, &user->shm_segsz)		||
	    __get_user(kern->shm_atime, &user->shm_atime)		||
	    __get_user(kern->shm_dtime, &user->shm_dtime)		||
	    __get_user(kern->shm_ctime, &user->shm_ctime)		||
	    __get_user(kern->shm_cpid, &user->shm_cpid)			||
	    __get_user(kern->shm_lpid, &user->shm_lpid)			||
	    __get_user(kern->shm_nattch, &user->shm_nattch))
		return -EFAULT;
	return 0;
}

static inline int sunos_shmid_put(struct shmid_ds32 __user *user,
				  struct shmid_ds *kern)
{
	if (put_user(kern->shm_perm.key, &user->shm_perm.key)		||
	    __put_user(kern->shm_perm.uid, &user->shm_perm.uid)		||
	    __put_user(kern->shm_perm.gid, &user->shm_perm.gid)		||
	    __put_user(kern->shm_perm.cuid, &user->shm_perm.cuid)	||
	    __put_user(kern->shm_perm.cgid, &user->shm_perm.cgid)	||
	    __put_user(kern->shm_segsz, &user->shm_segsz)		||
	    __put_user(kern->shm_atime, &user->shm_atime)		||
	    __put_user(kern->shm_dtime, &user->shm_dtime)		||
	    __put_user(kern->shm_ctime, &user->shm_ctime)		||
	    __put_user(kern->shm_cpid, &user->shm_cpid)			||
	    __put_user(kern->shm_lpid, &user->shm_lpid)			||
	    __put_user(kern->shm_nattch, &user->shm_nattch))
		return -EFAULT;
	return 0;
}

asmlinkage int sunos_shmsys(int op, u32 arg1, u32 arg2, u32 arg3)
{
	struct shmid_ds ksds;
	unsigned long raddr;
	mm_segment_t old_fs = get_fs();
	int rval;

	switch(op) {
	case 0:
		/* do_shmat(): attach a shared memory area */
		rval = do_shmat((int)arg1,(char __user *)(unsigned long)arg2,(int)arg3,&raddr);
		if (!rval)
			rval = (int) raddr;
		break;
	case 1:
		/* sys_shmctl(): modify shared memory area attr. */
		if (!sunos_shmid_get((struct shmid_ds32 __user *)(unsigned long)arg3, &ksds)) {
			set_fs(KERNEL_DS);
			rval = sys_shmctl((int) arg1,(int) arg2,
					  (struct shmid_ds __user *) &ksds);
			set_fs(old_fs);
			if (!rval)
				rval = sunos_shmid_put((struct shmid_ds32 __user *)(unsigned long)arg3,
						       &ksds);
		} else
			rval = -EFAULT;
		break;
	case 2:
		/* sys_shmdt(): detach a shared memory area */
		rval = sys_shmdt((char __user *)(unsigned long)arg1);
		break;
	case 3:
		/* sys_shmget(): get a shared memory area */
		rval = sys_shmget((key_t)arg1,(int)arg2,(int)arg3);
		break;
	default:
		rval = -EINVAL;
		break;
	};
	return rval;
}

extern asmlinkage long sparc32_open(const char __user * filename, int flags, int mode);

asmlinkage int sunos_open(u32 fname, int flags, int mode)
{
	const char __user *filename = compat_ptr(fname);

	return sparc32_open(filename, flags, mode);
}

#define SUNOS_EWOULDBLOCK 35

/* see the sunos man page read(2v) for an explanation
   of this garbage. We use O_NDELAY to mark
   file descriptors that have been set non-blocking 
   using 4.2BSD style calls. (tridge) */

static inline int check_nonblock(int ret, int fd)
{
	if (ret == -EAGAIN) {
		struct file * file = fget(fd);
		if (file) {
			if (file->f_flags & O_NDELAY)
				ret = -SUNOS_EWOULDBLOCK;
			fput(file);
		}
	}
	return ret;
}

asmlinkage int sunos_read(unsigned int fd, char __user *buf, u32 count)
{
	int ret;

	ret = check_nonblock(sys_read(fd, buf, count), fd);
	return ret;
}

asmlinkage int sunos_readv(u32 fd, void __user *vector, s32 count)
{
	int ret;

	ret = check_nonblock(compat_sys_readv(fd, vector, count), fd);
	return ret;
}

asmlinkage int sunos_write(unsigned int fd, char __user *buf, u32 count)
{
	int ret;

	ret = check_nonblock(sys_write(fd, buf, count), fd);
	return ret;
}

asmlinkage int sunos_writev(u32 fd, void __user *vector, s32 count)
{
	int ret;

	ret = check_nonblock(compat_sys_writev(fd, vector, count), fd);
	return ret;
}

asmlinkage int sunos_recv(u32 __fd, void __user *ubuf, int size, unsigned flags)
{
	int ret, fd = (int) __fd;

	ret = check_nonblock(sys_recv(fd, ubuf, size, flags), fd);
	return ret;
}

asmlinkage int sunos_send(u32 __fd, void __user *buff, int len, unsigned flags)
{
	int ret, fd = (int) __fd;

	ret = check_nonblock(sys_send(fd, buff, len, flags), fd);
	return ret;
}

asmlinkage int sunos_accept(u32 __fd, struct sockaddr __user *sa, int __user *addrlen)
{
	int ret, fd = (int) __fd;

	while (1) {
		ret = check_nonblock(sys_accept(fd, sa, addrlen), fd);
		if (ret != -ENETUNREACH && ret != -EHOSTUNREACH)
			break;
	}
	return ret;
}

#define SUNOS_SV_INTERRUPT 2

asmlinkage int sunos_sigaction (int sig,
				struct old_sigaction32 __user *act,
				struct old_sigaction32 __user *oact)
{
	struct k_sigaction new_ka, old_ka;
	int ret;

	if (act) {
		compat_old_sigset_t mask;
		u32 u_handler;

		if (get_user(u_handler, &act->sa_handler) ||
		    __get_user(new_ka.sa.sa_flags, &act->sa_flags))
			return -EFAULT;
		new_ka.sa.sa_handler = compat_ptr(u_handler);
		__get_user(mask, &act->sa_mask);
		new_ka.sa.sa_restorer = NULL;
		new_ka.ka_restorer = NULL;
		siginitset(&new_ka.sa.sa_mask, mask);
		new_ka.sa.sa_flags ^= SUNOS_SV_INTERRUPT;
	}

	ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);

	if (!ret && oact) {
		old_ka.sa.sa_flags ^= SUNOS_SV_INTERRUPT;
		if (put_user(ptr_to_compat(old_ka.sa.sa_handler), &oact->sa_handler) ||
		    __put_user(old_ka.sa.sa_flags, &oact->sa_flags))
			return -EFAULT;
		__put_user(old_ka.sa.sa_mask.sig[0], &oact->sa_mask);
	}

	return ret;
}

asmlinkage int sunos_setsockopt(u32 __fd, u32 __level, u32 __optname,
				char __user *optval, u32 __optlen)
{
	int fd = (int) __fd;
	int level = (int) __level;
	int optname = (int) __optname;
	int optlen = (int) __optlen;
	int tr_opt = optname;
	int ret;

	if (level == SOL_IP) {
		/* Multicast socketopts (ttl, membership) */
		if (tr_opt >=2 && tr_opt <= 6)
			tr_opt += 30;
	}
	ret = sys_setsockopt(fd, level, tr_opt,
			     optval, optlen);
	return ret;
}

asmlinkage int sunos_getsockopt(u32 __fd, u32 __level, u32 __optname,
				char __user *optval, int __user *optlen)
{
	int fd = (int) __fd;
	int level = (int) __level;
	int optname = (int) __optname;
	int tr_opt = optname;
	int ret;

	if (level == SOL_IP) {
		/* Multicast socketopts (ttl, membership) */
		if (tr_opt >=2 && tr_opt <= 6)
			tr_opt += 30;
	}
	ret = compat_sys_getsockopt(fd, level, tr_opt,
				    optval, optlen);
	return ret;
}