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
|
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2007 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/* Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T */
/* All Rights Reserved */
/*
* Portions of this source code were derived from Berkeley 4.3 BSD
* under license from the Regents of the University of California.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
#include <sys/param.h>
#include <sys/isa_defs.h>
#include <sys/types.h>
#include <sys/sysmacros.h>
#include <sys/cred.h>
#include <sys/systm.h>
#include <sys/errno.h>
#include <sys/ttold.h>
#include <sys/vnode.h>
#include <sys/file.h>
#include <sys/mode.h>
#include <sys/proc.h>
#include <sys/uio.h>
#include <sys/kmem.h>
#include <sys/filio.h>
#include <sys/sunddi.h>
#include <sys/debug.h>
#include <sys/int_limits.h>
#include <sys/model.h>
/*
* I/O control.
*/
int
ioctl(int fdes, int cmd, intptr_t arg)
{
file_t *fp;
int error = 0;
vnode_t *vp;
struct vattr vattr;
int32_t flag;
int rv = 0;
if ((fp = getf(fdes)) == NULL)
return (set_errno(EBADF));
vp = fp->f_vnode;
if (vp->v_type == VREG || vp->v_type == VDIR) {
/*
* Handle these two ioctls for regular files and
* directories. All others will usually be failed
* with ENOTTY by the VFS-dependent code. System V
* always failed all ioctls on regular files, but SunOS
* supported these.
*/
switch (cmd) {
case FIONREAD: {
/*
* offset is int32_t because that is what FIONREAD
* is defined in terms of. We cap at INT_MAX as in
* other cases for this ioctl.
*/
int32_t offset;
vattr.va_mask = AT_SIZE;
error = VOP_GETATTR(vp, &vattr, 0, fp->f_cred, NULL);
if (error) {
releasef(fdes);
return (set_errno(error));
}
offset = MIN(vattr.va_size - fp->f_offset, INT_MAX);
if (copyout(&offset, (caddr_t)arg, sizeof (offset))) {
releasef(fdes);
return (set_errno(EFAULT));
}
releasef(fdes);
return (0);
}
case FIONBIO:
if (copyin((caddr_t)arg, &flag, sizeof (flag))) {
releasef(fdes);
return (set_errno(EFAULT));
}
mutex_enter(&fp->f_tlock);
if (flag)
fp->f_flag |= FNDELAY;
else
fp->f_flag &= ~FNDELAY;
mutex_exit(&fp->f_tlock);
releasef(fdes);
return (0);
default:
break;
}
}
/*
* ioctl() now passes in the model information in some high bits.
*/
flag = fp->f_flag | get_udatamodel();
error = VOP_IOCTL(fp->f_vnode, cmd, arg, flag, CRED(), &rv, NULL);
if (error != 0) {
releasef(fdes);
return (set_errno(error));
}
switch (cmd) {
case FIONBIO:
if (copyin((caddr_t)arg, &flag, sizeof (flag))) {
releasef(fdes);
return (set_errno(EFAULT));
}
mutex_enter(&fp->f_tlock);
if (flag)
fp->f_flag |= FNDELAY;
else
fp->f_flag &= ~FNDELAY;
mutex_exit(&fp->f_tlock);
break;
default:
break;
}
releasef(fdes);
return (rv);
}
/*
* Old stty and gtty. (Still.)
*/
int
stty(int fdes, intptr_t arg)
{
return (ioctl(fdes, TIOCSETP, arg));
}
int
gtty(int fdes, intptr_t arg)
{
return (ioctl(fdes, TIOCGETP, arg));
}
|
