Login or Register to Ask a Question and Join Our Community

Linux and UNIX Man Pages

Linux & Unix Commands - Search Man Pages

fiu-run(1) [debian man page]

fiu-run(1)						      General Commands Manual							fiu-run(1)

NAME

       fiu-run - a script to launch programs using libfiu

SYNOPSIS

       fiu-run [options] program [program arguments]

DESCRIPTION

       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 http://blitiri.com.ar/p/libfiu.

OPTIONS

       -c command
	      Run the given libfiu remote control command before executing the program (see below for reference).

       -x     Use the POSIX libfiu preload library, allows simulate failures in the POSIX and C standard library functions.

       -f ctrlpath
	      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.

       -l path
	      Path where to find the libfiu preload libraries. Defaults to the path where they were installed, so it is usually correct.

       Remote control commands are of the form "command param1=value1,param2=value2".  Valid commands are:

       'enable name=NAME'
	      Enables the NAME failure point unconditionally.

       'enable_random name=NAME,probability=P'
	      Enables the NAME failure point with a probability of P.

       All of the enable* commands can also optionally take failnum and failinfo parameters, analogous to the ones taken by the C functions.

EXAMPLES

       The  following  will  run the fortune(1) program simulating faults in read() 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 -c "enable_random name=posix/io/rw/read,probability=0.05" 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  simu-
       lated failures.

SEE ALSO

       libfiu(3), fiu-ctrl(1).

BUGS

       If  you	want  to  report bugs, or have any questions or comments, just let me know at albertito@blitiri.com.ar. For more information about
       libfiu, you can go to http://blitiri.com.ar/p/libfiu.

								    16/Jun/2009 							fiu-run(1)

Check Out this Related Man Page

fiu-ctrl(1)						      General Commands Manual						       fiu-ctrl(1)

NAME

       fiu-ctrl - a script to remote control programs using libfiu

SYNOPSIS

       fiu-ctrl [options] PID [PID ...]

DESCRIPTION

       fiu-ctrl is a script to enable/disable failure points in running programs that are using libfiu(3).

       Programs are usually launched using fiu-run(1), which enables libfiu's remote control capabilities without the need to modify the program's
       code.

       For additional documentation, go to the project's website at http://blitiri.com.ar/p/libfiu.

OPTIONS

       -c command
	      Run the given libfiu remote control command before executing the program (see below for reference).

       -f ctrlpath
	      Set the default prefix for remote control over named pipes. Defaults to "$TMPDIR/fiu-ctrl", or "/tmp/fiu-ctrl" if "$TMPDIR"  is  not
	      set, which is the usually correct for programs launched using fiu-run(1).

       Remote control commands are of the form "command param1=value1,param2=value2".  Valid commands are:

       'enable name=NAME'
	      Enables the NAME failure point unconditionally.

       'enable_random name=NAME,probability=P'
	      Enables the NAME failure point with a probability of P.

       'disable name=NAME'
	      Disables the NAME failure point.

       All of the enable* commands can also optionally take failnum and failinfo parameters, analogous to the ones taken by the C functions.

EXAMPLES

       The  following  command will tell the process running with PID 12345 to enable the failure point posix/io/read with a 25% of probability to
       fail, and the failure point libc/mm/malloc with a 5% of probability to fail:

	      fiu-ctrl -c 'enable_random name=posix/io/*,probability=0.25' 
		       -c 'enable_random name=libc/mm/*,probability=0.05' 12345

       And the following will tell the same process to disable the previously enabled failure point posix/io/read:

	      fiu-ctrl -c 'disable name=posix/io/read' 12345

SEE ALSO

       libfiu(3), fiu-run(1).

BUGS

       If you want to report bugs, or have any questions or comments, just let me know at albertito@blitiri.com.ar.  For  more	information  about
       libfiu, you can go to http://blitiri.com.ar/p/libfiu.

								    16/Jun/2009 						       fiu-ctrl(1)
Man Page