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148 lines
6.5 KiB
HTML
148 lines
6.5 KiB
HTML
4 years ago
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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
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<html>
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<!-- Copyright (C) 1988-2019 Free Software Foundation, Inc.
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Permission is granted to copy, distribute and/or modify this document
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under the terms of the GNU Free Documentation License, Version 1.3 or
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any later version published by the Free Software Foundation; with the
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Invariant Sections being "Free Software" and "Free Software Needs
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Free Documentation", with the Front-Cover Texts being "A GNU Manual,"
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and with the Back-Cover Texts as in (a) below.
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(a) The FSF's Back-Cover Text is: "You are free to copy and modify
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this GNU Manual. Buying copies from GNU Press supports the FSF in
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developing GNU and promoting software freedom." -->
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<!-- Created by GNU Texinfo 6.4, http://www.gnu.org/software/texinfo/ -->
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<head>
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<title>struct stat (Debugging with GDB)</title>
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<meta name="description" content="struct stat (Debugging with GDB)">
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<meta name="keywords" content="struct stat (Debugging with GDB)">
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
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<link href="index.html#Top" rel="start" title="Top">
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<link href="Concept-Index.html#Concept-Index" rel="index" title="Concept Index">
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<link href="index.html#SEC_Contents" rel="contents" title="Table of Contents">
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<link href="Protocol_002dspecific-Representation-of-Datatypes.html#Protocol_002dspecific-Representation-of-Datatypes" rel="up" title="Protocol-specific Representation of Datatypes">
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<link href="struct-timeval.html#struct-timeval" rel="next" title="struct timeval">
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<link href="Memory-Transfer.html#Memory-Transfer" rel="prev" title="Memory Transfer">
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<style type="text/css">
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</head>
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<body lang="en">
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<a name="struct-stat"></a>
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<div class="header">
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<p>
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Next: <a href="struct-timeval.html#struct-timeval" accesskey="n" rel="next">struct timeval</a>, Previous: <a href="Memory-Transfer.html#Memory-Transfer" accesskey="p" rel="prev">Memory Transfer</a>, Up: <a href="Protocol_002dspecific-Representation-of-Datatypes.html#Protocol_002dspecific-Representation-of-Datatypes" accesskey="u" rel="up">Protocol-specific Representation of Datatypes</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>
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</div>
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<hr>
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<a name="struct-stat-1"></a>
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<h4 class="unnumberedsubsubsec">struct stat</h4>
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<a name="index-struct-stat_002c-in-file_002di_002fo-protocol"></a>
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<p>The buffer of type <code>struct stat</code> used by the target and <small>GDB</small>
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is defined as follows:
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</p>
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<div class="smallexample">
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<pre class="smallexample">struct stat {
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unsigned int st_dev; /* device */
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unsigned int st_ino; /* inode */
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mode_t st_mode; /* protection */
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unsigned int st_nlink; /* number of hard links */
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unsigned int st_uid; /* user ID of owner */
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unsigned int st_gid; /* group ID of owner */
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unsigned int st_rdev; /* device type (if inode device) */
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unsigned long st_size; /* total size, in bytes */
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unsigned long st_blksize; /* blocksize for filesystem I/O */
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unsigned long st_blocks; /* number of blocks allocated */
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time_t st_atime; /* time of last access */
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time_t st_mtime; /* time of last modification */
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time_t st_ctime; /* time of last change */
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};
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</pre></div>
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<p>The integral datatypes conform to the definitions given in the
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appropriate section (see <a href="Integral-Datatypes.html#Integral-Datatypes">Integral Datatypes</a>, for details) so this
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structure is of size 64 bytes.
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</p>
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<p>The values of several fields have a restricted meaning and/or
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range of values.
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</p>
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<dl compact="compact">
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<dt><code>st_dev</code></dt>
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<dd><p>A value of 0 represents a file, 1 the console.
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</p>
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</dd>
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<dt><code>st_ino</code></dt>
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<dd><p>No valid meaning for the target. Transmitted unchanged.
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</p>
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</dd>
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<dt><code>st_mode</code></dt>
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<dd><p>Valid mode bits are described in <a href="Constants.html#Constants">Constants</a>. Any other
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bits have currently no meaning for the target.
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</p>
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</dd>
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<dt><code>st_uid</code></dt>
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<dt><code>st_gid</code></dt>
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<dt><code>st_rdev</code></dt>
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<dd><p>No valid meaning for the target. Transmitted unchanged.
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</p>
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</dd>
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<dt><code>st_atime</code></dt>
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<dt><code>st_mtime</code></dt>
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<dt><code>st_ctime</code></dt>
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<dd><p>These values have a host and file system dependent
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accuracy. Especially on Windows hosts, the file system may not
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support exact timing values.
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</p></dd>
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</dl>
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<p>The target gets a <code>struct stat</code> of the above representation and is
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responsible for coercing it to the target representation before
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continuing.
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</p>
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<p>Note that due to size differences between the host, target, and protocol
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representations of <code>struct stat</code> members, these members could eventually
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get truncated on the target.
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</p>
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<hr>
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<div class="header">
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<p>
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Next: <a href="struct-timeval.html#struct-timeval" accesskey="n" rel="next">struct timeval</a>, Previous: <a href="Memory-Transfer.html#Memory-Transfer" accesskey="p" rel="prev">Memory Transfer</a>, Up: <a href="Protocol_002dspecific-Representation-of-Datatypes.html#Protocol_002dspecific-Representation-of-Datatypes" accesskey="u" rel="up">Protocol-specific Representation of Datatypes</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>
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</div>
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</body>
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</html>
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