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--- old/usr/src/man/man9e/awrite.9e
+++ new/usr/src/man/man9e/awrite.9e
1 1 '\" te
2 2 .\" Copyright (c) 2008, Sun Microsystems, Inc. All Rights Reserved.
3 3 .\" Copyright 1989 AT&T
4 4 .\" 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.
5 5 .\" 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.
6 6 .\" 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]
7 -.TH AWRITE 9E "Mar 28, 1997"
7 +.TH AWRITE 9E "February 15, 2020"
8 8 .SH NAME
9 9 awrite \- asynchronous write to a device
10 10 .SH SYNOPSIS
11 -.LP
12 11 .nf
13 12 #include <sys/uio.h>
14 13 #include <sys/aio_req.h>
15 14 #include <sys/cred.h>
16 15 #include <sys/ddi.h>
17 16 #include <sys/sunddi.h>
18 17
19 -\fBintprefix\fR\fBawrite\fR(\fBdev_t\fR \fIdev\fR, \fBstruct aio_req *\fR\fIaio_reqp\fR,
18 +\fBint prefix\fR\fBawrite\fR(\fBdev_t\fR \fIdev\fR, \fBstruct aio_req *\fR\fIaio_reqp\fR,
20 19 \fBcred_t *\fR\fIcred_p\fR);
21 20 .fi
22 21
23 22 .SH INTERFACE LEVEL
24 -.sp
25 -.LP
26 23 Solaris \fBDDI \fRspecific (Solaris DDI). This entry point is optional. Drivers
27 -that do not support an \fBawrite()\fR entry point should use \fBnodev\fR(9F)
24 +that do not support an \fBawrite()\fR entry point should use \fBnodev\fR(9F)
28 25 .SH PARAMETERS
29 -.sp
30 26 .ne 2
31 27 .na
32 28 \fB\fIdev\fR\fR
33 29 .ad
34 30 .RS 12n
35 31 Device number.
36 32 .RE
37 33
38 34 .sp
39 35 .ne 2
40 36 .na
41 37 \fB\fIaio_reqp\fR\fR
42 38 .ad
43 39 .RS 12n
44 -Pointer to the \fBaio_req\fR(9S) structure that describes where the data is
40 +Pointer to the \fBaio_req\fR(9S) structure that describes where the data is
45 41 stored.
46 42 .RE
47 43
48 44 .sp
49 45 .ne 2
50 46 .na
51 47 \fB\fIcred_p\fR\fR
52 48 .ad
53 49 .RS 12n
54 -Pointer to the credential structure.
50 +Pointer to the credential structure.
55 51 .RE
56 52
57 53 .SH DESCRIPTION
58 -.sp
59 -.LP
60 54 The driver's \fBawrite()\fR routine is called to perform an asynchronous write.
61 -\fBgetminor\fR(9F) can be used to access the minor number component of the
62 -\fIdev\fR argument. \fBawrite()\fR may use the credential structure pointed to
63 -by \fIcred_p\fR to check for superuser access by calling \fBdrv_priv\fR(9F).
64 -The \fBawrite()\fR routine may also examine the \fBuio\fR(9S) structure
65 -through the \fBaio_req\fR structure pointer, \fBaio_reqp\fR. \fBawrite()\fR
55 +\fBgetminor\fR(9F) can be used to access the minor number component of the
56 +\fIdev\fR argument. \fBawrite()\fR may use the credential structure pointed to
57 +by \fIcred_p\fR to check for superuser access by calling \fBdrv_priv\fR(9F).
58 +The \fBawrite()\fR routine may also examine the \fBuio\fR(9S) structure
59 +through the \fBaio_req\fR structure pointer, \fBaio_reqp\fR. \fBawrite()\fR
66 60 must call \fBaphysio\fR(9F) with the \fBaio_req\fR pointer and a pointer to the
67 61 driver's \fBstrategy\fR(9E) routine.
68 62 .sp
69 63 .LP
70 64 No fields of the \fBuio\fR(9S) structure pointed to by \fBaio_req\fR, other
71 65 than \fBuio_offset\fR or \fBuio_loffset\fR, may be modified for non-seekable
72 66 devices.
73 67 .SH RETURN VALUES
74 -.sp
75 -.LP
76 -The \fBawrite()\fR routine should return \fB0\fR for success, or the
68 +The \fBawrite()\fR routine should return \fB0\fR for success, or the
77 69 appropriate error number.
78 70 .SH CONTEXT
79 -.sp
80 -.LP
81 71 This function is called from user context only.
82 72 .SH EXAMPLES
83 -.LP
84 73 \fBExample 1 \fRUsing the \fBawrite()\fR routine:
85 74 .sp
86 75 .LP
87 -The following is an example of an \fBawrite()\fR routine:
76 +The following is an example of an \fBawrite()\fR routine:
88 77
89 78 .sp
90 79 .in +2
91 80 .nf
92 81 static int
93 82 xxawrite(dev_t dev, struct aio_req *aio, cred_t *cred_p)
94 83 {
95 84 int instance;
96 85 struct xxstate *xsp;
97 86
98 87 instance = getminor(dev);
99 88 xsp = ddi_get_soft_state(statep, instance);
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100 89 /*Verify soft state structure has been allocated */
101 90 if (xsp == NULL)
102 91 return (ENXIO);
103 92 return (aphysio(xxstrategy, anocancel, dev, B_WRITE, \e
104 93 xxminphys, aio));
105 94 }
106 95 .fi
107 96 .in -2
108 97
109 98 .SH SEE ALSO
110 -.sp
111 -.LP
112 99 \fBwrite\fR(2), \fBaiowrite\fR(3C), \fBaread\fR(9E), \fBread\fR(9E),
113 100 \fBstrategy\fR(9E), \fBwrite\fR(9E), \fBanocancel\fR(9F), \fBaphysio\fR(9F),
114 101 \fBddi_get_soft_state\fR(9F), \fBdrv_priv\fR(9F), \fBgetminor\fR(9F),
115 102 \fBminphys\fR(9F), \fBnodev\fR(9F), \fBaio_req\fR(9S), \fBcb_ops\fR(9S),
116 103 \fBuio\fR(9S)
117 104 .sp
118 105 .LP
119 106 \fIWriting Device Drivers\fR
120 107 .SH BUGS
121 -.sp
122 -.LP
123 108 There is no way other than calling \fBaphysio\fR(9F) to accomplish an
124 109 asynchronous write.
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