summaryrefslogtreecommitdiff
path: root/reference/C/FUNCTIONS/open.html
blob: 5c785f8b5fc61abe21223ecd93206b9839396e2c (plain)
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
<title>open function</title>

<head>
<script language="JavaScript">
</script>
</head>

<body bgcolor=#ffffcc>
<hr>
<center>
<h1>open function </h1>
</center>
<hr>
<b>open</b> 
<p>
<hr>
<pre>
	Library:   unistd.h
		   sys/types.h
		   sys/stat.h
		   fcntl.h

	Prototype: int open(char *Path, int Flags);

	Syntax:    int fd;
		   char *Path="/tmp/file";
		   int Flags= O_WRONLY;

		   fd = open(Path, Flags);

</pre>
<hr>
<p>
<b>Flags</b> specify the file attributes. They must contain one of 
O_RDONLY, O_WRONLY or O_RDWR and may also have any of the following.
O_CREAT, O_EXCL,  O_NOCTTY, O_TRUNC, O_APPEND, O_NONBLOCK, O_NDELAY,
O_SYNC. See the man page for full details.

<hr>
<h2>Examples:</h2>

<img src=../../GRAPHICS/computer.gif><a href="../EXAMPLES/pipe1.c"> pipe example</a> 
program.

<hr>
<h2>See Also:</h2>

<img src=../../GRAPHICS/whiteball.gif>
<a href="pipe.html">pipe</a> function.<p>

<img src=../../GRAPHICS/whiteball.gif>
<a href="close.html">close</a> function.<p>

<img src=../../GRAPHICS/whiteball.gif>
<a href="write.html">write</a> function.<p>

<img src=../../GRAPHICS/whiteball.gif>
<a href="fopen.html">fopen</a> function.<p>


<p>

<hr>
<p>
<center>
<table border=2 width="80%" bgcolor="ivory">
<tr align=center>
<td width="25%">
<a href="../cref.html">                  Top</a>
</td><td width="25%">
<a href="../master_index.html">          Master Index</a>
</td><td width="25%">
<a href="../SYNTAX/keywords.html">                 Keywords</a>
</td><td width="25%">
<a href="funcref.htm">      Functions</a>
</td>
</tr>
</table>
</center>
<p>
<hr>
<address>Martin Leslie 
</address><p>
</body>
</html>