fiu-run - a script to launch programs using libfiu
fiu-run [options] program [program arguments]
fiu-run is a script to make it easier to launch programs using
libfiu(3). It can enable failure points and start libfiu’s remote
control capabilities before starting to execute the program, avoiding
the need to write a special launcher to inject failures.
It is specially useful when used to inject failures in the POSIX/libc
functions, because it does not require any program modifications.
After launching programs with fiu-run, fiu-ctrl(1) can be used to
enable and disable their failure points at runtme.
For additional documentation, go to the project’s website at
Enable the given failure point name.
Use the given probability for the previous failure point. In
percent, defaults to 100, which means "always enabled". Must
come after the -e it affects.
Use the given number as the failnum for the previous failure
point. Must be != 0, defaults to 1. Must come after the -e it
Use the given number as the failinfo for the previous failure
point. Defaults to 0. Must come after the -e it affects.
-x Use the POSIX libfiu preload library, allows simulate failures
in the POSIX and C standard library functions.
Enable remote control over named pipes with the given path as
base name, the process id will be appended (defaults to
"$TMPDIR/fiu-ctrl", or "/tmp/fiu-ctrl" if "$TMPDIR" is not set).
Set to "" to disable remote control over named pipes.
Path where to find the libfiu preload libraries. Defaults to the
path where they were installed, so it is usually correct.
You can enable any number of failure points by using -e repeatedly.
The following will run the fortune(1) program simulating faults in all
the POSIX I/O functions with a 10% probability, and in malloc() with 5%
probability (note that the -x parameter is required in this case to
enable failure points in the POSIX and libc functions):
fiu-run -x -e posix/io/* -p 10 -e libc/mm/malloc -p 5 fortune
By running it multiple times you will see that sometimes it works, but
most of the time you get different errors, resulting from the simulated
If you want to report bugs, or have any questions or comments, just let
me know at email@example.com. For more information about libfiu,
you can go to http://blitiri.com.ar/p/libfiu.