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lib

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README.md
README.md
 
 
close.cpp
close.cpp
 
 
lib.cpp
lib.cpp
 
 
lib.h
lib.h
 
 
misc.cpp
misc.cpp
 
 
mmap.cpp
mmap.cpp
 
 
open.cpp
open.cpp
 
 
read.cpp
read.cpp
 
 
seek.cpp
seek.cpp
 
 
stat.cpp
stat.cpp
 
 
sync.cpp
sync.cpp
 
 
write.cpp
write.cpp
 
 

README.md

This folder is the main entrance of the library.

lib.cpp contains the constructor and destructor functions that are called when the library is loaded and unloaded.

The rest of the .cpp files implement extern functions with the same name and signature as the glibc functions. They act as a thin wrapper around the class File in src/file/.

The glibc functions are declared as weak symbols:

> nm -D /lib/x86_64-linux-gnu/libc.so.6 | grep "fstat@@"
0000000000113e80 W fstat@@GLIBC_2.33

So they can be overridden by our own implementation in this folder.

Note that the actual glibc functions are loaded in posix.h using dlsym.