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<!-- Copyright (C) 2003 Red Hat, Inc.                                -->
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<HTML
><HEAD
><TITLE
>Devices</TITLE
><meta name="MSSmartTagsPreventParsing" content="TRUE">
<META
NAME="GENERATOR"
CONTENT="Modular DocBook HTML Stylesheet Version 1.76b+
"><LINK
REL="HOME"
TITLE="eCos Reference Manual"
HREF="ecos-ref.html"><LINK
REL="UP"
TITLE="File System Support Infrastructure"
HREF="fileio.html"><LINK
REL="PREVIOUS"
TITLE="Select"
HREF="fileio-select.html"><LINK
REL="NEXT"
TITLE="Writing a New Filesystem"
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>eCos Reference Manual</TH
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>Next</A
></TD
></TR
></TABLE
><HR
ALIGN="LEFT"
WIDTH="100%"></DIV
><DIV
CLASS="CHAPTER"
><H1
><A
NAME="FILEIO-DEVICES">Chapter 28. Devices</H1
><P
>Devices are accessed by means of a pseudo-filesystem, &quot;devfs&quot;, that is
mounted on &quot;/dev&quot;. Open operations are translated into calls to
<TT
CLASS="FUNCTION"
>cyg_io_lookup()</TT
> and if successful result in a file object whose
<TT
CLASS="STRUCTFIELD"
><I
>f_ops</I
></TT
> functions translate filesystem API functions into calls into
the device API.</P
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WIDTH="100%"
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VALIGN="top"
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HREF="fileio-select.html"
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ALIGN="center"
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WIDTH="33%"
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><A
HREF="fileio.html"
ACCESSKEY="U"
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ALIGN="right"
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></HTML
>

Line No.	Rev	Author	Line
1	28	unneback	`<!-- Copyright (C) 2003 Red Hat, Inc. -->`
2			`<!-- This material may be distributed only subject to the terms -->`
3			`<!-- and conditions set forth in the Open Publication License, v1.0 -->`
4			`<!-- or later (the latest version is presently available at -->`
5			`<!-- http://www.opencontent.org/openpub/). -->`
6			`<!-- Distribution of the work or derivative of the work in any -->`
7			`<!-- standard (paper) book form is prohibited unless prior -->`
8			`<!-- permission is obtained from the copyright holder. -->`
9			`<HTML`
10			`><HEAD`
11			`><TITLE`
12			`>Devices</TITLE`
13			`><meta name="MSSmartTagsPreventParsing" content="TRUE">`
14			`<META`
15			`NAME="GENERATOR"`
16			`CONTENT="Modular DocBook HTML Stylesheet Version 1.76b+`
17			`"><LINK`
18			`REL="HOME"`
19			`TITLE="eCos Reference Manual"`
20			`HREF="ecos-ref.html"><LINK`
21			`REL="UP"`
22			`TITLE="File System Support Infrastructure"`
23			`HREF="fileio.html"><LINK`
24			`REL="PREVIOUS"`
25			`TITLE="Select"`
26			`HREF="fileio-select.html"><LINK`
27			`REL="NEXT"`
28			`TITLE="Writing a New Filesystem"`
29			`HREF="fileio-writing.html"></HEAD`
30			`><BODY`
31			`CLASS="CHAPTER"`
32			`BGCOLOR="#FFFFFF"`
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49			`>eCos Reference Manual</TH`
50			`></TR`
51			`><TR`
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54			`ALIGN="left"`
55			`VALIGN="bottom"`
56			`><A`
57			`HREF="fileio-select.html"`
58			`ACCESSKEY="P"`
59			`>Prev</A`
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61			`><TD`
62			`WIDTH="80%"`
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64			`VALIGN="bottom"`
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79			`WIDTH="100%"></DIV`
80			`><DIV`
81			`CLASS="CHAPTER"`
82			`><H1`
83			`><A`
84			`NAME="FILEIO-DEVICES">Chapter 28. Devices</H1`
85			`><P`
86			`>Devices are accessed by means of a pseudo-filesystem, "devfs", that is`
87			`mounted on "/dev". Open operations are translated into calls to`
88			`<TT`
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90			`>cyg_io_lookup()</TT`
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92			`<TT`
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95			`>f_ops</I`
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97			`> functions translate filesystem API functions into calls into`
98			`the device API.</P`
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100			`><DIV`
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139			`><TR`
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148			`VALIGN="top"`
149			`><A`
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153			`></TD`
154			`><TD`
155			`WIDTH="33%"`
156			`ALIGN="right"`
157			`VALIGN="top"`
158			`>Writing a New Filesystem</TD`
159			`></TR`
160			`></TABLE`
161			`></DIV`
162			`></BODY`
163			`></HTML`
164			`>`

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[/] [openrisc/] [trunk/] [rtos/] [ecos-2.0/] [doc/] [html/] [ref/] [fileio-devices.html] - Blame information for rev 367