README

README.md

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+# FunFail
+
+Funfail is a shared library that is used to simulate failures in memory allocation (malloc, calloc) and I/O operations (write, read) after a set number of uses. This can be useful for testing the robustness and error-handling capabilities of your programs.
+
+## Usage
+
+After making the shared object:
+
+```
+make
+```
+
+Copy the funfail.so to the path of the program you want to test. Preloading the funfail.so can be done using the `LD_PRELOAD` environment variable in Linux. Run your program while preloading the funfail.so and use one of the following env variables:
+- MAX_MALLOC_CALLS
+- MAX_CALLOC_CALLS
+- MAX_WRITE_CALLS
+- MAX_READ_CALLS
+
+Example:
+```
+LD_PRELOAD=./funfail.so MAX_MALLOC_CALLS=5 ./myapp
+```