33 lines
1.5 KiB
HTML
33 lines
1.5 KiB
HTML
<html><!-- This HTML file has been created by texi2html 1.29
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from syscalls.texi on 4 June 1994 -->
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<TITLE>Syscall specifications of Linux - brk</TITLE>
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<P>Go to the <A HREF="syscalls_36.html" tppabs="http://www.infran.ru/TechInfo/syscalls/syscalls_36.html">previous</A>, <A HREF="syscalls_38.html" tppabs="http://www.infran.ru/TechInfo/syscalls/syscalls_38.html">next</A> section.<P>
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<H2><A NAME="SEC37" HREF="syscalls_toc.html#SEC37" tppabs="http://www.infran.ru/TechInfo/syscalls/syscalls_toc.html#SEC37">brk</A></H2>
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<P>
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<H3>SYNOPSIS</H3>
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<P>
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<CODE>int brk(void *<VAR>end_data_segment</VAR>);</CODE>
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<P>
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<H3>PARAMETERS</H3>
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<P>
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<VAR>end_data_segment</VAR>: [in] the new end of the data segment.
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<P>
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<H3>DESCRIPTION</H3>
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<P>
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<CODE>brk</CODE> sets the end of the data segment to the value specified by
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<VAR>end_data_segment</VAR>. This value must be greater than the end
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of the text segment and lower than 16KB before the end of the stack.
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<P>
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Note: the brk syscall is in never called directly. It is wrapped by a
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libc function that changes the return value. The sbrk fucntion is also
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implemented as a wrapper.
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<P>
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<H3>RETURN VALUE</H3>
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<P>
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Returns the new end of the data segment. (If it is not equal the the
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requested end, then there has been an error and the memory couldn't be
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allocated.)
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<P>
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<P>Go to the <A HREF="syscalls_36.html" tppabs="http://www.infran.ru/TechInfo/syscalls/syscalls_36.html">previous</A>, <A HREF="syscalls_38.html" tppabs="http://www.infran.ru/TechInfo/syscalls/syscalls_38.html">next</A> section.<P>
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