Awesome LD_PRELOAD

This is a list of resources related to LD_PRELOAD, a mechanism for changing application behavior at run-time. Libraries can override specified functions with another, for example, making time(3) always return 0. This is often useful for testing or modifying application behavior without source code changes.

To use, set the environment variable LD_PRELOAD=/full/path/to/your_shared_lib.so before launching your application.

LD_PRELOAD works on Linux systems and some BSDs. macOS implements similar functionality via DYLD_INSERT_LIBRARIES.

Libraries

angrymlocker - library for keeping corresponding process in memory
arg-inject - add support for config files
cleancache - drop files content from page cache after closing, useful for backups
flockit - add file locking to programs that don't do it
ld-preload-open - map files or directories to another location
libeatmydata - disable all forms of writing data safely to disk. fsync() becomes a no-op, O_SYNC is removed, etc.
libfaketime - libfaketime modifies the system time for a single application
libinput-force-middle-click-emulation - force libinput to emulate a middle click when pressing left and right buttons simultaneously
libkeepalive - enable TCP keepalive socket options
libleakmydata - disable SSL certificate verification
libnoxattr - disable all forms of extended attribute access
openssl-hook - log data to/from SSL_write/SSL_read to disk
otherport - redirect connections to other ports
timeskew - override time reporting in Linux processes (accelerate/slowdown games, test code involving timers/delays)
unrandom - make srand() always use the seed 0

License

Licensed under the Creative Commons Attribution License, Version 4.0

Awesome LD_PRELOAD