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