I stopped the AppArmor service and reran the test with no change in behavior.
Thanks, Johan. > -----Original Message----- > From: Umberto Nicoletti [mailto:[email protected]] > Sent: Tuesday, August 17, 2010 2:20 AM > To: Johan Forsman > Cc: [email protected] > Subject: Re: [mapserver-users] Need help tracking down mapserv seg fault > > It could be a problem with selinux/apparmor, try to disable it. > Best regards, > Umberto > > On Fri, Aug 13, 2010 at 3:49 PM, Johan Forsman <[email protected]> > wrote: > > Hello All: > > > > Please pardon the very lengthy post. I have attempted to collect as much > data as I could think of. > > > > Summary: > > FGS95 with MapServer 5.4.1 on Ubuntu Server, using OGR JOIN results in > mapserv seg fault when run from browser, works fine from shp2img. > > > > Detailed: > > I have an FGs95 install on Ubuntu Server 9.10, using MapServer 5.4.1 on > the back with a mixed shapefile/PostGIS datastore, GeoMoose 2.2 front-end. > Everything is working very nicely except for my current problem. > > > > I have a need to color polygons stored in a shapefile, CLASSified based > on attributes in an external csv-file. Guidance found in the ether > indicates that the only way to do this with MapServer is to use an OGR > connection between the shapefile and the csv-file. > > Using tips found here and there I have been able to construct a SELECT > statement in the DATA directive that allows shp2img to create a PNG that > looks just like I hoped it would (see attached), but I must confess that I > don't fully understand how as the SELECT statement does not look like what > I am used to seeing in some proprietary products. I am clearly in need of > an OGR education (with lots of example code). > > > > The LAYER section in the mapfile is > > > > LAYER # Parish Boundary Polygon Outline Layer > > NAME 'parishes_on_boiladv' > > CONNECTIONTYPE OGR > > CONNECTION "webmaps_parishes.shp" > > DATA "SELECT * FROM webmaps_parishes LEFT JOIN 'bwa.csv'.bwa ON > webmaps_parishes.FIPS = bwa.FIPS" > > STATUS default > > TYPE polygon > > CLASSITEM "PercentageOut" > > CLASS > > EXPRESSION ([PercentageOut] > 0 AND [PercentageOut] <= 10) > > NAME "0 - 10%" > > STYLE > > COLOR 56 168 0 > > END > > END #class > > (continues with several more classes). > > > > The shapefile and csv-file are stored in the same directory. Both have a > field "FIPS" which is the field I wish to join on. The "PercentageOut" > field is in the csv-file. The DATA statement appears to work, but I looks > really odd to me. > > > > Is there a way to get a table output from the OGR JOIN to study? > > > > I have set DEBUG 5 at the MAP level and the LAYER level to troubleshoot, > but the process segfaults before any error is written to the ms_error > file. The Apache and system logs contain only this when testing from > localhost: > > > > /opt/fgs/www/logs/error_log: > > [Thu Aug 12 14:53:02 2010] [error] [client 127.0.1.1] Premature end of > script headers: mapserv > > > > /var/log/messages: > > Aug 12 14:53:02 geoview kernel: [12879514.857356] mapserv[24114]: > segfault at 0 ip 0945e714 sp bf9058dc error 6 > > > > I saw another post with similar issues suggesting it's a library issue, > discussing the LD_LIBRARY_PATH environment variable not being set properly > for the Apache user. As far as I can tell this variable points to the > right place in /opt/fgs/, but to be certain I added a SetEnv/PassEnv > statement in the fgs-version of httpd.conf without any change in behavior. > > > > In both /opt/fgs/etc/conf/httpd.conf and the local user environment I > have > > LD_LIBRARY_PATH set to /opt/fgs/lib:/opt/fgs/www/lib. > > > > Is there a way to see the environment for the Apache user? I don't know > how important this is. As mentioned everything else has been and is > working very well. > > > > Could there be some other conflicting system library picked up? > > > > The URL I test with is > > /cgi- > bin/mapserv?map=/opt/fgs/apps/geomoose2/maps/sdwp/boil_adv/webmaps_boil_ad > visories.map&mode=map > > and I have confirmed all works fine when pointing the URL to other > mapfiles. > > > > I set the file and directory permissions to full access to all users > temporarily to test and there is no difference in behavior. > > > > When I run shp2img on the same mapfile the correct image is returned and > there are no errors indicated in the ms_error file. The only oddity I see > is in the path used by OGROpen: > > msLoadMap(): 0.033s > > msOGRFileOpen(webmaps_parishes.shp)... > > > OGROPen(/opt/fgs/apps/geomoose2/maps/sdwp/boil_adv/./webmaps_parishes.shp > ) > > msConnPoolRegister(parishes_on_boiladv,webmaps_parishes.shp,0x9fdeb68) > > msOGRFileWhichShapes: Setting spatial filter to -10515009.640986 > 3370567.000000 -9840476.359014 3918467.000000 > > msOGRFileNextShape: Returning shape=0, tile=0 > > *** 62 shapes snipped here, there are 64 total polygons *** > > msOGRFileNextShape: Returning shape=63, tile=0 > > msOGRFileNextShape: Returning MS_DONE (no more shapes) > > msOGRLayerClose(webmaps_parishes.shp). > > > msOGRFileClose(/opt/fgs/apps/geomoose2/maps/sdwp/boil_adv/./webmaps_paris > hes.shp,-1). > > msConnPoolRelease(parishes_on_boiladv,webmaps_parishes.shp,0x9fdeb68) > > msConnPoolClose(webmaps_parishes.shp,0x9fdeb68) > > msDrawMap(): Layer 0 (parishes_on_boiladv), 0.118s > > msDrawMap(): Drawing Label Cache, 0.000s > > msDrawMap() total time: 0.126s > > msSaveImage() total time: 0.311s > > msFreeMap(): freeing map at 0x9d36ac8. > > freeLayer(): freeing layer at 0x9d3d7d8. > > shp2img total time: 0.472s > > > > What else can I test? > > > > If you made it this far, thanks for taking the time to read! > > > > I am very grateful for any and all advice. > > ---------------------- > > Johan Forsman > > Geologist > > Safe Drinking Water Program > > Louisiana Department of Health and Hospitals > > Office of Public Health > > Telephone: 225.342.7309 > > Telefax: 225.342.7303 > > > > > > > > _______________________________________________ > > mapserver-users mailing list > > [email protected] > > http://lists.osgeo.org/mailman/listinfo/mapserver-users > > > > _______________________________________________ mapserver-users mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/mapserver-users
