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README.md

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