103 lines
4.8 KiB
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103 lines
4.8 KiB
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<title>struct stat - Debugging with GDB</title>
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</head>
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<body>
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<div class="node">
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<a name="struct-stat"></a>
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<p>
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Next: <a rel="next" accesskey="n" href="struct-timeval.html#struct-timeval">struct timeval</a>,
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Previous: <a rel="previous" accesskey="p" href="Memory-Transfer.html#Memory-Transfer">Memory Transfer</a>,
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Up: <a rel="up" accesskey="u" href="Protocol_002dspecific-Representation-of-Datatypes.html#Protocol_002dspecific-Representation-of-Datatypes">Protocol-specific Representation of Datatypes</a>
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<hr>
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</div>
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<h5 class="unnumberedsubsubsec">struct stat</h5>
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<p><a name="index-struct-stat_002c-in-file_002di_002fo-protocol-3622"></a>
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The buffer of type <code>struct stat</code> used by the target and <span class="sc">gdb</span>
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is defined as follows:
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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>
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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>The values of several fields have a restricted meaning and/or
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range of values.
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<dl>
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<dt><code>st_dev</code><dd>A value of 0 represents a file, 1 the console.
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<br><dt><code>st_ino</code><dd>No valid meaning for the target. Transmitted unchanged.
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<br><dt><code>st_mode</code><dd>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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<br><dt><code>st_uid</code><dt><code>st_gid</code><dt><code>st_rdev</code><dd>No valid meaning for the target. Transmitted unchanged.
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<br><dt><code>st_atime</code><dt><code>st_mtime</code><dt><code>st_ctime</code><dd>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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</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>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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</body></html>
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