Default working directory for FRCUserProgram process?

[lalondma]

Hello,
Recently, I got a program crash because the text file that was supposed to be loaded by AutomonousInit (C++ - iterative robot) could not be found. The file was placed in /home/lvuser alongside the binary FRCUserProgram, so I expected a call like fopen("foo.txt","r") to work but it didn't. fopen("/home/lvuser/foo.txt","r") did work however, so it's not a permission issue. Also tried to put the file in "/home/admin" in case FRCUserProgram would run as admin, without success. Anybody knows what the default working directory is? "/", maybe?

[connor.worley]

http://linux.die.net/man/3/getcwd

Test and share results?

[lalondma]

Indeed, got it with getcwd (thanks for the tip):

/usr/local/natinst/labview

Not especially intuitive...

[jhersh]

Indeed, got it with getcwd (thanks for the tip):

/usr/local/natinst/labview

Not especially intuitive...

Sorry about that. I'll fix it for next season if you'll file a tracker at https://usfirst.collab.net/sf/tracker/do/listArtifacts/projects.wpilib/tracker.4_defects

[kylelanman]

We ran into a similar issue. Our findings indicated that the working directory was different when running while debugging and running when deployed. The quick fix for us was to use the entire path: /home/lvuser/Encoder_Offsets.txt.