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| author | alk3pInjection <webmaster@raspii.tech> | 2024-02-04 16:16:35 +0800 |
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| committer | alk3pInjection <webmaster@raspii.tech> | 2024-02-04 16:16:35 +0800 |
| commit | 6ce4ebed87858ecdd79a1091367c6e961055daa9 (patch) | |
| tree | 1c2a6a60531acf791531bbd9c8ac14c23ef8a66c /share/doc/gdb/open.html | |
https://developer.arm.com/downloads/-/arm-gnu-toolchain-downloads
Change-Id: I7303388733328cd98ab9aa3c30236db67f2e9e9c
Diffstat (limited to 'share/doc/gdb/open.html')
| -rw-r--r-- | share/doc/gdb/open.html | 228 |
1 files changed, 228 insertions, 0 deletions
diff --git a/share/doc/gdb/open.html b/share/doc/gdb/open.html new file mode 100644 index 0000000..c6f0fc2 --- /dev/null +++ b/share/doc/gdb/open.html @@ -0,0 +1,228 @@ +<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> +<html> +<!-- Copyright (C) 1988-2023 Free Software Foundation, Inc. + +Permission is granted to copy, distribute and/or modify this document +under the terms of the GNU Free Documentation License, Version 1.3 or +any later version published by the Free Software Foundation; with the +Invariant Sections being "Free Software" and "Free Software Needs +Free Documentation", with the Front-Cover Texts being "A GNU Manual," +and with the Back-Cover Texts as in (a) below. + +(a) The FSF's Back-Cover Text is: "You are free to copy and modify +this GNU Manual. Buying copies from GNU Press supports the FSF in +developing GNU and promoting software freedom." --> +<!-- Created by GNU Texinfo 5.1, http://www.gnu.org/software/texinfo/ --> +<head> +<title>Debugging with GDB: open</title> + +<meta name="description" content="Debugging with GDB: open"> +<meta name="keywords" content="Debugging with GDB: open"> +<meta name="resource-type" content="document"> +<meta name="distribution" content="global"> +<meta name="Generator" content="makeinfo"> +<meta http-equiv="Content-Type" content="text/html; charset=utf-8"> +<link href="index.html#Top" rel="start" title="Top"> +<link href="Concept-Index.html#Concept-Index" rel="index" title="Concept Index"> +<link href="index.html#SEC_Contents" rel="contents" title="Table of Contents"> +<link href="List-of-Supported-Calls.html#List-of-Supported-Calls" rel="up" title="List of Supported Calls"> +<link href="close.html#close" rel="next" title="close"> +<link href="List-of-Supported-Calls.html#List-of-Supported-Calls" rel="previous" title="List of Supported Calls"> +<style type="text/css"> +<!-- +a.summary-letter {text-decoration: none} +blockquote.smallquotation {font-size: smaller} +div.display {margin-left: 3.2em} +div.example {margin-left: 3.2em} +div.indentedblock {margin-left: 3.2em} +div.lisp {margin-left: 3.2em} +div.smalldisplay {margin-left: 3.2em} +div.smallexample {margin-left: 3.2em} +div.smallindentedblock {margin-left: 3.2em; font-size: smaller} +div.smalllisp {margin-left: 3.2em} +kbd {font-style:oblique} +pre.display {font-family: inherit} +pre.format {font-family: inherit} +pre.menu-comment {font-family: serif} +pre.menu-preformatted {font-family: serif} +pre.smalldisplay {font-family: inherit; font-size: smaller} +pre.smallexample {font-size: smaller} +pre.smallformat {font-family: inherit; font-size: smaller} +pre.smalllisp {font-size: smaller} +span.nocodebreak {white-space:nowrap} +span.nolinebreak {white-space:nowrap} +span.roman {font-family:serif; font-weight:normal} +span.sansserif {font-family:sans-serif; font-weight:normal} +ul.no-bullet {list-style: none} +--> +</style> + + +</head> + +<body lang="en" bgcolor="#FFFFFF" text="#000000" link="#0000FF" vlink="#800080" alink="#FF0000"> +<a name="open"></a> +<div class="header"> +<p> +Next: <a href="close.html#close" accesskey="n" rel="next">close</a>, Up: <a href="List-of-Supported-Calls.html#List-of-Supported-Calls" accesskey="u" rel="up">List of Supported Calls</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Concept-Index.html#Concept-Index" title="Index" rel="index">Index</a>]</p> +</div> +<hr> +<a name="open-1"></a> +<h4 class="unnumberedsubsubsec">open</h4> +<a name="index-open_002c-file_002di_002fo-system-call"></a> + +<dl compact="compact"> +<dt>Synopsis:</dt> +<dd><div class="smallexample"> +<pre class="smallexample">int open(const char *pathname, int flags); +int open(const char *pathname, int flags, mode_t mode); +</pre></div> + +</dd> +<dt>Request:</dt> +<dd><p>‘<samp>Fopen,<var>pathptr</var>/<var>len</var>,<var>flags</var>,<var>mode</var></samp>’ +</p> +<p><var>flags</var> is the bitwise <code>OR</code> of the following values: +</p> +<dl compact="compact"> +<dt><code>O_CREAT</code></dt> +<dd><p>If the file does not exist it will be created. The host +rules apply as far as file ownership and time stamps +are concerned. +</p> +</dd> +<dt><code>O_EXCL</code></dt> +<dd><p>When used with <code>O_CREAT</code>, if the file already exists it is +an error and open() fails. +</p> +</dd> +<dt><code>O_TRUNC</code></dt> +<dd><p>If the file already exists and the open mode allows +writing (<code>O_RDWR</code> or <code>O_WRONLY</code> is given) it will be +truncated to zero length. +</p> +</dd> +<dt><code>O_APPEND</code></dt> +<dd><p>The file is opened in append mode. +</p> +</dd> +<dt><code>O_RDONLY</code></dt> +<dd><p>The file is opened for reading only. +</p> +</dd> +<dt><code>O_WRONLY</code></dt> +<dd><p>The file is opened for writing only. +</p> +</dd> +<dt><code>O_RDWR</code></dt> +<dd><p>The file is opened for reading and writing. +</p></dd> +</dl> + +<p>Other bits are silently ignored. +</p> + +<p><var>mode</var> is the bitwise <code>OR</code> of the following values: +</p> +<dl compact="compact"> +<dt><code>S_IRUSR</code></dt> +<dd><p>User has read permission. +</p> +</dd> +<dt><code>S_IWUSR</code></dt> +<dd><p>User has write permission. +</p> +</dd> +<dt><code>S_IRGRP</code></dt> +<dd><p>Group has read permission. +</p> +</dd> +<dt><code>S_IWGRP</code></dt> +<dd><p>Group has write permission. +</p> +</dd> +<dt><code>S_IROTH</code></dt> +<dd><p>Others have read permission. +</p> +</dd> +<dt><code>S_IWOTH</code></dt> +<dd><p>Others have write permission. +</p></dd> +</dl> + +<p>Other bits are silently ignored. +</p> + +</dd> +<dt>Return value:</dt> +<dd><p><code>open</code> returns the new file descriptor or -1 if an error +occurred. +</p> +</dd> +<dt>Errors:</dt> +<dd> +<dl compact="compact"> +<dt><code>EEXIST</code></dt> +<dd><p><var>pathname</var> already exists and <code>O_CREAT</code> and <code>O_EXCL</code> were used. +</p> +</dd> +<dt><code>EISDIR</code></dt> +<dd><p><var>pathname</var> refers to a directory. +</p> +</dd> +<dt><code>EACCES</code></dt> +<dd><p>The requested access is not allowed. +</p> +</dd> +<dt><code>ENAMETOOLONG</code></dt> +<dd><p><var>pathname</var> was too long. +</p> +</dd> +<dt><code>ENOENT</code></dt> +<dd><p>A directory component in <var>pathname</var> does not exist. +</p> +</dd> +<dt><code>ENODEV</code></dt> +<dd><p><var>pathname</var> refers to a device, pipe, named pipe or socket. +</p> +</dd> +<dt><code>EROFS</code></dt> +<dd><p><var>pathname</var> refers to a file on a read-only filesystem and +write access was requested. +</p> +</dd> +<dt><code>EFAULT</code></dt> +<dd><p><var>pathname</var> is an invalid pointer value. +</p> +</dd> +<dt><code>ENOSPC</code></dt> +<dd><p>No space on device to create the file. +</p> +</dd> +<dt><code>EMFILE</code></dt> +<dd><p>The process already has the maximum number of files open. +</p> +</dd> +<dt><code>ENFILE</code></dt> +<dd><p>The limit on the total number of files open on the system +has been reached. +</p> +</dd> +<dt><code>EINTR</code></dt> +<dd><p>The call was interrupted by the user. +</p></dd> +</dl> + +</dd> +</dl> + +<hr> +<div class="header"> +<p> +Next: <a href="close.html#close" accesskey="n" rel="next">close</a>, Up: <a href="List-of-Supported-Calls.html#List-of-Supported-Calls" accesskey="u" rel="up">List of Supported Calls</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Concept-Index.html#Concept-Index" title="Index" rel="index">Index</a>]</p> +</div> + + + +</body> +</html> |