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
fluxcapacitor - a tool for making your program run without blocking on timeouts, on functions like poll and select
fsatrace - filesystem access tracer
ktlswrapper - enables TLS support for existing applications without code change
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 - modifies the system time for a single application
libhugetlbfs - remap segments onto huge pages for a performance boost
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
lkl use modern Linux kernel on old Centos5/6 (2.6 kernel) machines.
openssl-hook - log data to/from SSL_write/SSL_read to disk
otherport - redirect connections to other ports
preeny - redirect stdin and stdout to sockets; neuter sleep, report constant time, amongst others
stderred - colorize all stderr output that goes to terminal thus making it distinguishable from stdout
timeskew - override time reporting in Linux processes (accelerate/slowdown games, test code involving timers/delays)
trickle - a userland bandwidth shaper
unrandom - make srand() always use the seed 0

License

Licensed under the Creative Commons Attribution License, Version 4.0

idkwim / awesome-ld-preload Goto Github PK