1/*-
2 * Copyright (c) 1998 Mark Newton
3 * Copyright (c) 1994 Christos Zoulas
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 * 3. The name of the author may not be used to endorse or promote products
15 *    derived from this software without specific prior written permission
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29#include <sys/cdefs.h>
30__FBSDID("$FreeBSD$");
31
32#include <sys/param.h>
33#include <sys/proc.h>
34#include <sys/systm.h>
35#include <sys/capability.h>
36#include <sys/file.h>
37#include <sys/filio.h>
38#include <sys/lock.h>
39#include <sys/signal.h>
40#include <sys/filedesc.h>
41#include <sys/poll.h>
42#include <sys/malloc.h>
43#include <sys/mutex.h>
44
45#include <sys/sysproto.h>
46
47#include <compat/svr4/svr4.h>
48#include <compat/svr4/svr4_types.h>
49#include <compat/svr4/svr4_util.h>
50#include <compat/svr4/svr4_signal.h>
51#include <compat/svr4/svr4_proto.h>
52#include <compat/svr4/svr4_ioctl.h>
53#include <compat/svr4/svr4_filio.h>
54
55/*#define GROTTY_READ_HACK*/
56
57int
58svr4_sys_poll(td, uap)
59     struct thread *td;
60     struct svr4_sys_poll_args *uap;
61{
62     int error;
63     struct poll_args pa;
64     struct pollfd *pfd;
65     int idx = 0, cerr;
66     u_long siz;
67
68     if (uap->nfds > maxfilesperproc && uap->nfds > FD_SETSIZE)
69       return (EINVAL);
70
71     pa.fds = uap->fds;
72     pa.nfds = uap->nfds;
73     pa.timeout = uap->timeout;
74
75     siz = uap->nfds * sizeof(struct pollfd);
76     pfd = (struct pollfd *)malloc(siz, M_TEMP, M_WAITOK);
77
78     error = sys_poll(td, (struct poll_args *)uap);
79
80     if ((cerr = copyin(uap->fds, pfd, siz)) != 0) {
81       error = cerr;
82       goto done;
83     }
84
85     for (idx = 0; idx < uap->nfds; idx++) {
86       /* POLLWRNORM already equals POLLOUT, so we don't worry about that */
87       if (pfd[idx].revents & (POLLOUT | POLLWRNORM | POLLWRBAND))
88	    pfd[idx].revents |= (POLLOUT | POLLWRNORM | POLLWRBAND);
89     }
90     if ((cerr = copyout(pfd, uap->fds, siz)) != 0) {
91       error = cerr;
92       goto done;   /* yeah, I know it's the next line, but this way I won't
93		       forget to update it if I add more code */
94     }
95done:
96     free(pfd, M_TEMP);
97     return error;
98}
99
100#if defined(READ_TEST)
101int
102svr4_sys_read(td, uap)
103     struct thread *td;
104     struct svr4_sys_read_args *uap;
105{
106     struct read_args ra;
107     cap_rights_t rights;
108     struct file *fp;
109     struct socket *so = NULL;
110     int so_state;
111     sigset_t sigmask;
112     int rv;
113
114     ra.fd = uap->fd;
115     ra.buf = uap->buf;
116     ra.nbyte = uap->nbyte;
117
118     if (fget(td, uap->fd, cap_rights_init(&rights, CAP_READ), &fp) != 0) {
119       DPRINTF(("Something fishy with the user-supplied file descriptor...\n"));
120       return EBADF;
121     }
122
123     if (fp->f_type == DTYPE_SOCKET) {
124       so = fp->f_data;
125       DPRINTF(("fd %d is a socket\n", uap->fd));
126       if (so->so_state & SS_ASYNC) {
127	 DPRINTF(("fd %d is an ASYNC socket!\n", uap->fd));
128       }
129       DPRINTF(("Here are its flags: 0x%x\n", so->so_state));
130#if defined(GROTTY_READ_HACK)
131       so_state = so->so_state;
132       so->so_state &= ~SS_NBIO;
133#endif
134     }
135
136     rv = read(td, &ra);
137
138     DPRINTF(("svr4_read(%d, 0x%0x, %d) = %d\n",
139	     uap->fd, uap->buf, uap->nbyte, rv));
140     if (rv == EAGAIN) {
141#ifdef DEBUG_SVR4
142       struct sigacts *ps;
143
144       PROC_LOCK(td->td_proc);
145       ps = td->td_proc->p_sigacts;
146       mtx_lock(&ps->ps_mtx);
147#endif
148       DPRINTF(("sigmask = 0x%x\n", td->td_sigmask));
149       DPRINTF(("sigignore = 0x%x\n", ps->ps_sigignore));
150       DPRINTF(("sigcaught = 0x%x\n", ps->ps_sigcatch));
151       DPRINTF(("siglist = 0x%x\n", td->td_siglist));
152#ifdef DEBUG_SVR4
153       mtx_unlock(&ps->ps_mtx);
154       PROC_UNLOCK(td->td_proc);
155#endif
156     }
157
158#if defined(GROTTY_READ_HACK)
159     if (so) {  /* We've already checked to see if this is a socket */
160       so->so_state = so_state;
161     }
162#endif
163     fdrop(fp, td);
164
165     return(rv);
166}
167#endif /* READ_TEST */
168
169#if defined(BOGUS)
170int
171svr4_sys_write(td, uap)
172     struct thread *td;
173     struct svr4_sys_write_args *uap;
174{
175     struct write_args wa;
176     struct file *fp;
177     int rv;
178
179     wa.fd = uap->fd;
180     wa.buf = uap->buf;
181     wa.nbyte = uap->nbyte;
182
183     rv = write(td, &wa);
184
185     DPRINTF(("svr4_write(%d, 0x%0x, %d) = %d\n",
186	     uap->fd, uap->buf, uap->nbyte, rv));
187
188     return(rv);
189}
190#endif /* BOGUS */
191
192int
193svr4_fil_ioctl(fp, td, retval, fd, cmd, data)
194	struct file *fp;
195	struct thread *td;
196	register_t *retval;
197	int fd;
198	u_long cmd;
199	caddr_t data;
200{
201	struct filedesc *fdp = td->td_proc->p_fd;
202	struct filedescent *fde;
203	int error, num;
204
205	*retval = 0;
206
207	switch (cmd) {
208	case SVR4_FIOCLEX:
209		FILEDESC_XLOCK(fdp);
210		fde = &fdp->fd_ofiles[fd];
211		fde->fde_flags |= UF_EXCLOSE;
212		FILEDESC_XUNLOCK(fdp);
213		return 0;
214
215	case SVR4_FIONCLEX:
216		FILEDESC_XLOCK(fdp);
217		fde = &fdp->fd_ofiles[fd];
218		fde->fde_flags &= ~UF_EXCLOSE;
219		FILEDESC_XUNLOCK(fdp);
220		return 0;
221
222	case SVR4_FIOGETOWN:
223	case SVR4_FIOSETOWN:
224	case SVR4_FIOASYNC:
225	case SVR4_FIONBIO:
226	case SVR4_FIONREAD:
227		if ((error = copyin(data, &num, sizeof(num))) != 0)
228			return error;
229
230		switch (cmd) {
231		case SVR4_FIOGETOWN:	cmd = FIOGETOWN; break;
232		case SVR4_FIOSETOWN:	cmd = FIOSETOWN; break;
233		case SVR4_FIOASYNC:	cmd = FIOASYNC;  break;
234		case SVR4_FIONBIO:	cmd = FIONBIO;   break;
235		case SVR4_FIONREAD:	cmd = FIONREAD;  break;
236		}
237
238#ifdef SVR4_DEBUG
239		if (cmd == FIOASYNC) DPRINTF(("FIOASYNC\n"));
240#endif
241		error = fo_ioctl(fp, cmd, (caddr_t) &num, td->td_ucred, td);
242
243		if (error)
244			return error;
245
246		return copyout(&num, data, sizeof(num));
247
248	default:
249		DPRINTF(("Unknown svr4 filio %lx\n", cmd));
250		return 0;	/* ENOSYS really */
251	}
252}
253