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/file.h>
36 #include <sys/filio.h>
37 #include <sys/lock.h>
38 #include <sys/signal.h>
39 #include <sys/filedesc.h>
40 #include <sys/poll.h>
41 #include <sys/malloc.h>
42 #include <sys/mutex.h>
43 #include <sys/resource.h>
44 #include <sys/resourcevar.h>
45
46 #include <sys/sysproto.h>
47
48 #include <compat/svr4/svr4.h>
49 #include <compat/svr4/svr4_types.h>
50 #include <compat/svr4/svr4_util.h>
51 #include <compat/svr4/svr4_signal.h>
52 #include <compat/svr4/svr4_proto.h>
53 #include <compat/svr4/svr4_ioctl.h>
54 #include <compat/svr4/svr4_filio.h>
55
56 /*#define GROTTY_READ_HACK*/
57
58 int
59 svr4_sys_poll(td, uap)
60 struct thread *td;
61 struct svr4_sys_poll_args *uap;
62 {
63 int error;
64 struct poll_args pa;
65 struct pollfd *pfd;
66 int idx = 0, cerr;
67 u_long siz;
68
69 PROC_LOCK(td->td_proc);
70 if (uap->nfds > lim_cur(td->td_proc, RLIMIT_NOFILE) &&
71 uap->nfds > FD_SETSIZE) {
72 PROC_UNLOCK(td->td_proc);
73 return (EINVAL);
74 }
75 PROC_UNLOCK(td->td_proc);
76
77 pa.fds = uap->fds;
78 pa.nfds = uap->nfds;
79 pa.timeout = uap->timeout;
80
81 siz = uap->nfds * sizeof(struct pollfd);
82 pfd = (struct pollfd *)malloc(siz, M_TEMP, M_WAITOK);
83
84 error = poll(td, (struct poll_args *)uap);
85
86 if ((cerr = copyin(uap->fds, pfd, siz)) != 0) {
87 error = cerr;
88 goto done;
89 }
90
91 for (idx = 0; idx < uap->nfds; idx++) {
92 /* POLLWRNORM already equals POLLOUT, so we don't worry about that */
93 if (pfd[idx].revents & (POLLOUT | POLLWRNORM | POLLWRBAND))
94 pfd[idx].revents |= (POLLOUT | POLLWRNORM | POLLWRBAND);
95 }
96 if ((cerr = copyout(pfd, uap->fds, siz)) != 0) {
97 error = cerr;
98 goto done; /* yeah, I know it's the next line, but this way I won't
99 forget to update it if I add more code */
100 }
101 done:
102 free(pfd, M_TEMP);
103 return error;
104 }
105
106 #if defined(READ_TEST)
107 int
108 svr4_sys_read(td, uap)
109 struct thread *td;
110 struct svr4_sys_read_args *uap;
111 {
112 struct read_args ra;
113 struct file *fp;
114 struct socket *so = NULL;
115 int so_state;
116 sigset_t sigmask;
117 int rv;
118
119 ra.fd = uap->fd;
120 ra.buf = uap->buf;
121 ra.nbyte = uap->nbyte;
122
123 if (fget(td, uap->fd, &fp) != 0) {
124 DPRINTF(("Something fishy with the user-supplied file descriptor...\n"));
125 return EBADF;
126 }
127
128 if (fp->f_type == DTYPE_SOCKET) {
129 so = fp->f_data;
130 DPRINTF(("fd %d is a socket\n", uap->fd));
131 if (so->so_state & SS_ASYNC) {
132 DPRINTF(("fd %d is an ASYNC socket!\n", uap->fd));
133 }
134 DPRINTF(("Here are its flags: 0x%x\n", so->so_state));
135 #if defined(GROTTY_READ_HACK)
136 so_state = so->so_state;
137 so->so_state &= ~SS_NBIO;
138 #endif
139 }
140
141 rv = read(td, &ra);
142
143 DPRINTF(("svr4_read(%d, 0x%0x, %d) = %d\n",
144 uap->fd, uap->buf, uap->nbyte, rv));
145 if (rv == EAGAIN) {
146 #ifdef DEBUG_SVR4
147 struct sigacts *ps;
148
149 PROC_LOCK(td->td_proc);
150 ps = td->td_proc->p_sigacts;
151 mtx_lock(&ps->ps_mtx);
152 #endif
153 DPRINTF(("sigmask = 0x%x\n", td->td_sigmask));
154 DPRINTF(("sigignore = 0x%x\n", ps->ps_sigignore));
155 DPRINTF(("sigcaught = 0x%x\n", ps->ps_sigcatch));
156 DPRINTF(("siglist = 0x%x\n", td->td_siglist));
157 #ifdef DEBUG_SVR4
158 mtx_unlock(&ps->ps_mtx);
159 PROC_UNLOCK(td->td_proc);
160 #endif
161 }
162
163 #if defined(GROTTY_READ_HACK)
164 if (so) { /* We've already checked to see if this is a socket */
165 so->so_state = so_state;
166 }
167 #endif
168 fdrop(fp, td);
169
170 return(rv);
171 }
172 #endif /* READ_TEST */
173
174 #if defined(BOGUS)
175 int
176 svr4_sys_write(td, uap)
177 struct thread *td;
178 struct svr4_sys_write_args *uap;
179 {
180 struct write_args wa;
181 struct file *fp;
182 int rv;
183
184 wa.fd = uap->fd;
185 wa.buf = uap->buf;
186 wa.nbyte = uap->nbyte;
187
188 rv = write(td, &wa);
189
190 DPRINTF(("svr4_write(%d, 0x%0x, %d) = %d\n",
191 uap->fd, uap->buf, uap->nbyte, rv));
192
193 return(rv);
194 }
195 #endif /* BOGUS */
196
197 int
198 svr4_fil_ioctl(fp, td, retval, fd, cmd, data)
199 struct file *fp;
200 struct thread *td;
201 register_t *retval;
202 int fd;
203 u_long cmd;
204 caddr_t data;
205 {
206 int error;
207 int num;
208 struct filedesc *fdp = td->td_proc->p_fd;
209
210 *retval = 0;
211
212 switch (cmd) {
213 case SVR4_FIOCLEX:
214 FILEDESC_LOCK_FAST(fdp);
215 fdp->fd_ofileflags[fd] |= UF_EXCLOSE;
216 FILEDESC_UNLOCK_FAST(fdp);
217 return 0;
218
219 case SVR4_FIONCLEX:
220 FILEDESC_LOCK_FAST(fdp);
221 fdp->fd_ofileflags[fd] &= ~UF_EXCLOSE;
222 FILEDESC_UNLOCK_FAST(fdp);
223 return 0;
224
225 case SVR4_FIOGETOWN:
226 case SVR4_FIOSETOWN:
227 case SVR4_FIOASYNC:
228 case SVR4_FIONBIO:
229 case SVR4_FIONREAD:
230 if ((error = copyin(data, &num, sizeof(num))) != 0)
231 return error;
232
233 switch (cmd) {
234 case SVR4_FIOGETOWN: cmd = FIOGETOWN; break;
235 case SVR4_FIOSETOWN: cmd = FIOSETOWN; break;
236 case SVR4_FIOASYNC: cmd = FIOASYNC; break;
237 case SVR4_FIONBIO: cmd = FIONBIO; break;
238 case SVR4_FIONREAD: cmd = FIONREAD; break;
239 }
240
241 #ifdef SVR4_DEBUG
242 if (cmd == FIOASYNC) DPRINTF(("FIOASYNC\n"));
243 #endif
244 error = fo_ioctl(fp, cmd, (caddr_t) &num, td->td_ucred, td);
245
246 if (error)
247 return error;
248
249 return copyout(&num, data, sizeof(num));
250
251 default:
252 DPRINTF(("Unknown svr4 filio %lx\n", cmd));
253 return 0; /* ENOSYS really */
254 }
255 }
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