How to write shared library

memory write protection against shared library: shared libraries such as glibc(in Linux), kernel32. dll(in Windows) are physically shared among processes.

Correct, but with COW (copy on write) property. Once your process writes to a shared page, it gets a copy of the page that is no longer shared with any other process. How To Write Shared Libraries Ulrich Drepper [email protected] com December 10, 2011 Abstract Today, shared libraries are ubiquitous. Developers use them for multiple reasons and create them just as they would create application code.

This is a problem, though, since on many How To Write Shared Libraries Ulrich Drepper Red Hat, Inc. [email protected] com August 20, 2006 Abstract Today, shared libraries are ubiquitous. Developers use them for multiple reasons and create them just as they would create application code.

This is a problem, though, since on many Step 2: Creating a shared library from an object file. Now we need to actually turn this object file into a shared library. Well call it libfoo. so: gcc shared o libfoo. so foo. o Step 3: Linking with a shared library. As you can see, that was actually pretty easy. We have a shared library. Lets compile our main. c and link it with libfoo. Draft How To Write Shared Libraries Ulrich Drepper Red Hat, Inc.

[email protected] com November 19, 2002 Abstract Today, shared libraries are ubiquitous. This can be changed with a recent enough GNU C library by ORing RTLD DEEPBIND to the ag word passed as the 10 Version How To Write Shared Libraries 11.

second parameter to dlopen. I would like you to ask why I cannot write to the loaded shared library code segment in RAM memory in Linux. 9 on MIPS CPU platform (LG TV). I am able to read bytes but not able to write anything.

In the example source code below (crosscompiled in gcc) I get ERROR 22: Invalid argument (EINVAL) when write() function is called.



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