38 lines
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38 lines
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<TITLE>10.4.1 kvm routines</TITLE>
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<B> Next:</B> <A NAME="tex2html2147" HREF="node146.html">10.4.2 ptrace and the </A>
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<B> Previous:</B> <A NAME="tex2html2139" HREF="node144.html">10.4 Process information and </A>
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<BR> <P>
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<H2><A NAME="SECTION001141000000000000000">10.4.1 <EM>kvm</EM> routines</A></H2>
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<P>
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Many systems use routines such as <EM>kvm_open</EM>, <EM>kvm_nlist</EM>,
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and <EM>kvm_read</EM> to access kernel data structures directly via
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the <EM>/dev/kmem</EM> device. In general, these programs will open
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<EM>/dev/kmem</EM>, read the kernel's symbol table, locate data
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in the running kernel with this table, and read the appropriate
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addresses in the kernel address space with these routines. Because
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this requires the user program and the kernel to agree upon the size
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and format of data structures read in this fashion, such programs
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often have to be rebuilt for each kernel revision, CPU type, and so
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forth.
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<P><ADDRESS>
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<I>Converted on: <BR>
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Fri Mar 29 14:43:04 EST 1996</I>
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