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• Exiting a reboot loop

  - by user12617035

  If you're in a situation where the system is panic'ing during boot, you can use # boot net -s to regain control of your system. In my case, I'd added some diagnostic code to a (PCI) driver (that is used to boot the root filesystem). There was a bug in the driver, and each time during boot, the bug occurred, and so caused the system to panic: ... 000000000180b950 genunix:vfs_mountroot+60 (800, 200, 0, 185d400, 1883000, 18aec00) %l0-3: 0000000000001770 0000000000000640 0000000001814000 00000000000008fc %l4-7: 0000000001833c00 00000000018b1000 0000000000000600 0000000000000200 000000000180ba10 genunix:main+98 (18141a0, 1013800, 18362c0, 18ab800, 180e000, 1814000) %l0-3: 0000000070002000 0000000000000001 000000000180c000 000000000180e000 %l4-7: 0000000000000001 0000000001074800 0000000000000060 0000000000000000 skipping system dump - no dump device configured rebooting... If you're logged in via the console, you can send a BREAK sequence in order to gain control of the firmware's (OBP's) prompt. Enter Ctrl-Shift-[ in order to get the TELNET prompt. Once telnet has control, enter this: telnet> send brk You'll be presented with OBP's prompt: ok You then enter the following in order to boot into single-user mode via the network: ok boot net -s Note that booting from the network under Solaris will implicitly cause the system to be INSTALLED with whatever software had last been configured to be installed. However, we are using boot net -s as a "handle" with which to get at the Solaris prompt. Once at that prompt, we can perform actions as root that will let us back out our buggy driver (ok... MY buggy driver :-)) ...and replace it with the original, non-buggy driver. Entering the boot command caused the following output, as well as left us at the Solaris prompt (in single-user-mode): Sun Blade 1500, No Keyboard Copyright 1998-2004 Sun Microsystems, Inc. All rights reserved. OpenBoot 4.16.4, 1024 MB memory installed, Serial #53463393. Ethernet address 0:3:ba:2f:c9:61, Host ID: 832fc961. Rebooting with command: boot net -s Boot device: /pci@1f,700000/network@2 File and args: -s 1000 Mbps FDX Link up Timeout waiting for ARP/RARP packet Timeout waiting for ARP/RARP packet 4000 1000 Mbps FDX Link up Requesting Internet address for 0:3:ba:2f:c9:61 SunOS Release 5.10 Version Generic_118833-17 64-bit Copyright 1983-2005 Sun Microsystems, Inc. All rights reserved. Use is subject to license terms. Booting to milestone "milestone/single-user:default". Configuring devices. Using RPC Bootparams for network configuration information. Attempting to configure interface bge0... Configured interface bge0 Requesting System Maintenance Mode SINGLE USER MODE # Our goal is to now move to the directory containing the buggy driver and replace it with the original driver (that we had saved away before ever loading our buggy driver! :-) However, since we booted from the network, the root filesystem ("/") is NOT mounted on one of our local disks. It is mounted on an NFS filesystem exported by our install server. To verify this, enter the following command: # mount | head -1 / on my-server:/export/install/media/s10u2/solarisdvd.s10s_u2dvd/latest/Solaris_10/Tools/Boot remote/read/write/setuid/devices/dev=4ac0001 on Wed Dec 31 16:00:00 1969 As a result, we have to create a temporary mount point and then mount the local disk onto that mount point: # mkdir /tmp/mnt # mount /dev/dsk/c0t0d0s0 /tmp/mnt Note that your system will not necessarily have had its root filesystem on "c0t0d0s0". This is something that you should also have recorded before you ever loaded your.. er... "my" buggy driver! :-) One can find the local disk mounted under the root filesystem by entering: # df -k / Filesystem kbytes used avail capacity Mounted on /dev/dsk/c0t0d0s0 76703839 4035535 71901266 6% / To continue with our example, we can now move to the directory of buggy-driver in order to replace it with the original driver. Note that /tmp/mnt is prefixed to the path of where we'd "normally" find the driver: # cd /tmp/mnt/platform/sun4u/kernel/drv/sparcv9 # ls -l pci\* -rw-r--r-- 1 root root 288504 Dec 6 15:38 pcisch -rw-r--r-- 1 root root 288504 Dec 6 15:38 pcisch.aar -rwxr-xr-x 1 root sys 211616 Jun 8 2006 pcisch.orig # cp -p pcisch.orig pcisch We can now synchronize any in-memory filesystem data structures with those on disk... and then reboot. The system will then boot correctly... as expected: # sync;sync # reboot syncing file systems... done Sun Blade 1500, No Keyboard Copyright 1998-2004 Sun Microsystems, Inc. All rights reserved. OpenBoot 4.16.4, 1024 MB memory installed, Serial #xxxxxxxx. Ethernet address 0:3:ba:2f:c9:61, Host ID: yyyyyyyy. Rebooting with command: boot Boot device: /pci@1e,600000/ide@d/disk@0,0:a File and args: SunOS Release 5.10 Version Generic_118833-17 64-bit Copyright 1983-2005 Sun Microsystems, Inc. All rights reserved. Use is subject to license terms. Hostname: my-host NIS domain name is my-campus.Central.Sun.COM my-host console login: ...so that's how it's done! Of course, the easier way is to never write a buggy-driver... but.. then.. we all "have an eraser on the end of each of our pencils"... don't we ? :-) "...thank you... and good night..."

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• Can't control connection bit rate using iwconfig with Atheros TL-WN821N (AR7010)

  - by Paul H

  I'm trying to reduce the connection bit rate on my Atheros TP-Link TL-WN821N v3 usb wifi adapter due to frequent instability issues (reported connection speed goes down to 1Mb/s and I have to physically reconnect the adapter to regain a connection). I know this is a common problem with this device, and I have tried everything I can think of to fix it, including using drivers from linux-backports; compiling and installing a custom firmware (following instructions on https://wiki.debian.org/ath9k_htc#fw-free) and (as a last resort) using ndiswrapper. When using ndiswrapper, the wifi adapter is stable and operates in g mode at 54Mb/s (whilst when using the default ath9k_htc module, the adapter connects in n mode and the bit rate fluctuates constantly). Unfortunately, with this setup I have to run my processor using only one core, since using SMP with ndiswrapper causes a kernel oops on my system. So I want to lock my bit rate to 54Mb/s (or less, if need be) for connection stability, using the ath9k_htc module. I've tried 'sudo iwconfig wlan0 rate 54M'; the command runs with no error but when I check the bit rate with 'sudo iwlist wlan0 bitrate' the command returns: wlan0 unknown bit-rate information. Current Bit Rate:78 Mb/s Any ideas? Here's some info (hopefully relevant) on my setup: Xubuntu (12.04.3) 64bit (kernel 3.2.0-55.85-generic) using Network Manager. My Router is from Virgin Media, the VMDG480. lshw -C network : *-network description: Wireless interface physical id: 1 bus info: usb@1:4 logical name: wlan0 serial: 74:ea:3a:8f:16:b6 capabilities: ethernet physical wireless configuration: broadcast=yes driver=ath9k_htc driverversion=3.2.0-55 firmware=1.3 ip=192.168.0.9 link=yes multicast=yes wireless=IEEE 802.11bgn lsusb -v: Bus 001 Device 003: ID 0cf3:7015 Atheros Communications, Inc. TP-Link TL-WN821N v3 802.11n [Atheros AR7010+AR9287] Device Descriptor: bLength 18 bDescriptorType 1 bcdUSB 2.00 bDeviceClass 255 Vendor Specific Class bDeviceSubClass 255 Vendor Specific Subclass bDeviceProtocol 255 Vendor Specific Protocol bMaxPacketSize0 64 idVendor 0x0cf3 Atheros Communications, Inc. idProduct 0x7015 TP-Link TL-WN821N v3 802.11n [Atheros AR7010+AR9287] bcdDevice 2.02 iManufacturer 16 ATHEROS iProduct 32 UB95 iSerial 48 12345 bNumConfigurations 1 Configuration Descriptor: bLength 9 bDescriptorType 2 wTotalLength 60 bNumInterfaces 1 bConfigurationValue 1 iConfiguration 0 bmAttributes 0x80 (Bus Powered) MaxPower 500mA Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 0 bAlternateSetting 0 bNumEndpoints 6 bInterfaceClass 255 Vendor Specific Class bInterfaceSubClass 0 bInterfaceProtocol 0 iInterface 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x01 EP 1 OUT bmAttributes 2 Transfer Type Bulk Synch Type None Usage Type Data wMaxPacketSize 0x0200 1x 512 bytes bInterval 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x82 EP 2 IN bmAttributes 2 Transfer Type Bulk Synch Type None Usage Type Data wMaxPacketSize 0x0200 1x 512 bytes bInterval 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x83 EP 3 IN bmAttributes 3 Transfer Type Interrupt Synch Type None Usage Type Data wMaxPacketSize 0x0040 1x 64 bytes bInterval 1 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x04 EP 4 OUT bmAttributes 3 Transfer Type Interrupt Synch Type None Usage Type Data wMaxPacketSize 0x0040 1x 64 bytes bInterval 1 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x05 EP 5 OUT bmAttributes 2 Transfer Type Bulk Synch Type None Usage Type Data wMaxPacketSize 0x0200 1x 512 bytes bInterval 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x06 EP 6 OUT bmAttributes 2 Transfer Type Bulk Synch Type None Usage Type Data wMaxPacketSize 0x0200 1x 512 bytes bInterval 0 Device Qualifier (for other device speed): bLength 10 bDescriptorType 6 bcdUSB 2.00 bDeviceClass 255 Vendor Specific Class bDeviceSubClass 255 Vendor Specific Subclass bDeviceProtocol 255 Vendor Specific Protocol bMaxPacketSize0 64 bNumConfigurations 1 Device Status: 0x0000 (Bus Powered) iwlist wlan0 scanning: wlan0 Scan completed : Cell 01 - Address: C4:3D:C7:3A:1F:5D Channel:1 Frequency:2.412 GHz (Channel 1) Quality=37/70 Signal level=-73 dBm Encryption key:on ESSID:"my essid" Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 18 Mb/s 24 Mb/s; 36 Mb/s; 54 Mb/s Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 48 Mb/s Mode:Master Extra:tsf=00000070cca77186 Extra: Last beacon: 5588ms ago IE: Unknown: 0007756E69636F726E IE: Unknown: 010882848B962430486C IE: Unknown: 030101 IE: Unknown: 2A0100 IE: Unknown: 2F0100 IE: IEEE 802.11i/WPA2 Version 1 Group Cipher : TKIP Pairwise Ciphers (2) : CCMP TKIP Authentication Suites (1) : PSK IE: Unknown: 32040C121860 IE: Unknown: 2D1AFC181BFFFF000000000000000000000000000000000000000000 IE: Unknown: 3D1601080400000000000000000000000000000000000000 IE: Unknown: DD7E0050F204104A0001101044000102103B00010310470010F99C335D7BAC57FB00137DFA79600220102100074E657467656172102300074E6574676561721024000631323334353610420007303030303030311054000800060050F20400011011000743473331303144100800022008103C0001011049000600372A000120 IE: Unknown: DD090010180203F02C0000 IE: WPA Version 1 Group Cipher : TKIP Pairwise Ciphers (2) : CCMP TKIP Authentication Suites (1) : PSK IE: Unknown: DD180050F2020101800003A4000027A4000042435E0062322F00 iwconfig: lo no wireless extensions. wlan0 IEEE 802.11bgn ESSID:"my essid" Mode:Managed Frequency:2.412 GHz Access Point: C4:3D:C7:3A:1F:5D Bit Rate=78 Mb/s Tx-Power=20 dBm Retry long limit:7 RTS thr:off Fragment thr:off Power Management:off Link Quality=36/70 Signal level=-74 dBm Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0 Tx excessive retries:0 Invalid misc:0 Missed beacon:0,

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• how to enable SQL Application Role via Entity Framework

  - by Ehsan Farahani

  I'm now developing big government application with entity framework. at first i have one problem about enable SQL application role. with ado.net I'm using below code: SqlCommand cmd = new SqlCommand("sys.sp_setapprole"); cmd.CommandType = CommandType.StoredProcedure; cmd.Connection = _sqlConn; SqlParameter paramAppRoleName = new SqlParameter(); paramAppRoleName.Direction = ParameterDirection.Input; paramAppRoleName.ParameterName = "@rolename"; paramAppRoleName.Value = "AppRole"; cmd.Parameters.Add(paramAppRoleName); SqlParameter paramAppRolePwd = new SqlParameter(); paramAppRolePwd.Direction = ParameterDirection.Input; paramAppRolePwd.ParameterName = "@password"; paramAppRolePwd.Value = "123456"; cmd.Parameters.Add(paramAppRolePwd); SqlParameter paramCreateCookie = new SqlParameter(); paramCreateCookie.Direction = ParameterDirection.Input; paramCreateCookie.ParameterName = "@fCreateCookie"; paramCreateCookie.DbType = DbType.Boolean; paramCreateCookie.Value = 1; cmd.Parameters.Add(paramCreateCookie); SqlParameter paramEncrypt = new SqlParameter(); paramEncrypt.Direction = ParameterDirection.Input; paramEncrypt.ParameterName = "@encrypt"; paramEncrypt.Value = "none"; cmd.Parameters.Add(paramEncrypt); SqlParameter paramEnableCookie = new SqlParameter(); paramEnableCookie.ParameterName = "@cookie"; paramEnableCookie.DbType = DbType.Binary; paramEnableCookie.Direction = ParameterDirection.Output; paramEnableCookie.Size = 1000; cmd.Parameters.Add(paramEnableCookie); try { cmd.ExecuteNonQuery(); SqlParameter outVal = cmd.Parameters["@cookie"]; // Store the enabled cookie so that approle can be disabled with the cookie. _appRoleEnableCookie = (byte[]) outVal.Value; } catch (Exception ex) { result = false; msg = "Could not execute enable approle proc." + Environment.NewLine + ex.Message; } But no matter how much I searched I could not find a way to implement on EF. Another question is: how to Add Application Role to Entity data model designer? I'm using the below code for execute parameter with EF: AEntities ar = new AEntities(); DbConnection con = ar.Connection; con.Open(); msg = ""; bool result = true; DbCommand cmd = con.CreateCommand(); cmd.CommandType = CommandType.StoredProcedure; cmd.Connection = con; var d = new DbParameter[]{ new SqlParameter{ ParameterName="@r", Value ="AppRole",Direction = ParameterDirection.Input} , new SqlParameter{ ParameterName="@p", Value ="123456",Direction = ParameterDirection.Input} }; string sql = "EXEC " + procName + " @rolename=@r,@password=@p"; var s = ar.ExecuteStoreCommand(sql, d); When run ExecuteStoreCommand this line return error: Application roles can only be activated at the ad hoc level.

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• Apache, Nginx, WSGI, django cookies get lost.

  - by Jack M.

  I'm running into a problem trying to get a Django application running in my staging environment. I'm running nginx as a reverse proxy with Apache 2.2/mod_wsgi as the target, and my Django app behind that. The problem is that the cookies are getting lost somewhere between nginx and Apache. My nginx.conf (ripped out a few locations to keep it small): http { gzip on; proxy_set_header Host $host; proxy_set_header X-Real-IP $remote_addr; proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; proxy_pass_header Set-Cookie; upstream django { server 127.0.0.1:8080; } server { listen 80; server_name encendio.iigins.com; location / { proxy_pass http://django; } } } My Apache vhosts file: <VirtualHost *:8080> ServerName encendio.test.com ServerAdmin [email protected] DocumentRoot "/usr/local/www/apache22/data" WSGIScriptAlias / /usr/local/www/apache22/data/sasquatch/wsgi_handler.py </VirtualHost> If I directly to http://encendio.test.com:8080/ the cookies work and I can log into the admin area. If I log into http://encendio.test.com/, the admin area tells me my browser isn't using cookies. Now things get kind of weird. I went so far as to look at the environ being passed into my wsgi_handler.py: _application = django.core.handlers.wsgi.WSGIHandler() def application(environ, start_response): print >> sys.stderr, environ.get('HTTP_COOKIE', "No Cookie") return _application(environ, start_response) It shows the cookie existing in the environment: [Mon Mar 22 12:15:50 2010] [error] csrftoken=9f2569elkj67984242f0e7a6dea0b791; sessionid=4e5432hjkds8603f26d5ffa02b10cd27 And this cookie matches up with what I see in nginx's log if I plug in $http_cookie on the end of the log. So Apache is getting the cookie in some form, but it's not ending up where Django can see it. I'm at my wit's end for why this isn't working, so any help is greatly appreciated. Ninja Edit: I forgot to mention that Firefox is seeing the cookies. The oddity is that every time I attempt to log in, I get a new sessionid.

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• Failed to load viewstate

  - by Jen

  OK have just started getting this error and I'm not sure why. I have a hosting page which has listview and a panel with a usercontrol. The listview loads up records with a linkbutton. You click the link button to edit that particular record - which gets loaded up in the formview (within the usercontrol) which goes to edit mode. After an update occurs in the formview I'm triggering an event which my hosting page is listening for. The hosting page then rebinds the listview to show the updated data. So this all works - but when I then go to click on a different linkbutton I get the below error: Webpage error details User Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; WOW64; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; InfoPath.3) Timestamp: Fri, 18 Jun 2010 03:15:54 UTC Message: Sys.WebForms.PageRequestManagerServerErrorException: Failed to load viewstate. The control tree into which viewstate is being loaded must match the control tree that was used to save viewstate during the previous request. For example, when adding controls dynamically, the controls added during a post-back must match the type and position of the controls added during the initial request. Line: 4723 Char: 21 Code: 0 URI: http://localhost:1951/AdminWebSite/ScriptResource.axd?d=yfdLw4zYs0bqYqs1arL-htap1ceeKCyW1EXhrhMZy_AqJ36FUpx8b2pzMKL6V7ebYsgJDVm_sZ_ykV1hNtFqgYcJCLLtardHm9-yyA7zC4k1&t=ffffffffec2d9970 Any suggestions as to what is actually wrong?? My event listener does this: protected void RatesEditDate1_EditDateRateUpdated() { if (IsDateRangeValid(txtDisplayFrom, txtDisplayTo)) { PropertyAccommodationRates1.DataBind(); } else { pnlViewAccommodationRates.Visible = false; } divEditRate.Visible = false; } When I click my link button - it should be hitting this but the second time round it errors before hitting the breakpoint: protected void RatesEditDate1_EditDateRateSelected(DateTime theDateTime) { // make sure everything else is invisible pnlAddAccommodation.Visible = false; pnlViewEditAccommodations.Visible = false; RatesEditDate1.TheDateTime = theDateTime; RatesEditDate1.PropertyID = (int)Master.PropertyId; if (!String.IsNullOrEmpty(Accommodations1.SelectedValue)) { RatesEditDate1.AccommodationTypeID = Convert.ToInt32(Accommodations1.SelectedValue); } else { RatesEditDate1.AccommodationTypeID = 0; } divEditRate.Visible = true; } So my listview appears to be being rebound successfully - I can see my changed data.. I just don't know why its complaining about viewstate when I click on the linkbutton. Or is there a better way to update the data in my listview? My listview and formview are bound to objectdata sources (in case that matters) Thanks for the help!

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• javax.servlet.ServletException - how could i get to the cause?

  - by Michal

  Hi, i'm getting a very strange error while opening one of the pages in my web app. The application is built on Seam 2.2 and is using JSF (RichFaces) as a view technology. I run it on Tomcat 6. The error i'm describing doesn't occur on my machine (Mac OS X), but it does on my client's dev machines (Windows) and on the server (Linux Debian). I'm sure i'm running the same version on each system and i have tried connecting to the same database... In logs everything looks fine - each next JSF Phase executes normally, and after the last one, there is this moment when the request starts processing for the SEAM debug page... And this is the stack trace i see on the debug page (nothing is logged): Exception during request processing: Caused by javax.servlet.ServletException with message: "Servlet execution threw an exception" org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:313) org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:83) org.jboss.seam.web.IdentityFilter.doFilter(IdentityFilter.java:40) org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69) org.jboss.seam.web.MultipartFilter.doFilter(MultipartFilter.java:90) org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69) org.jboss.seam.web.ExceptionFilter.doFilter(ExceptionFilter.java:64) org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69) org.jboss.seam.web.RedirectFilter.doFilter(RedirectFilter.java:45) org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69) org.ajax4jsf.webapp.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:178) org.ajax4jsf.webapp.BaseFilter.handleRequest(BaseFilter.java:290) org.ajax4jsf.webapp.BaseFilter.processUploadsAndHandleRequest(BaseFilter.java:388) org.ajax4jsf.webapp.BaseFilter.doFilter(BaseFilter.java:515) org.jboss.seam.web.Ajax4jsfFilter.doFilter(Ajax4jsfFilter.java:56) org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69) org.jboss.seam.web.LoggingFilter.doFilter(LoggingFilter.java:60) org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69) org.jboss.seam.web.HotDeployFilter.doFilter(HotDeployFilter.java:53) org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69) org.jboss.seam.servlet.SeamFilter.doFilter(SeamFilter.java:158) org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) pl.mgibowski.alterium.util.LoggingFilter.doFilter(LoggingFilter.java:18) org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233) org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191) org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:465) org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127) org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298) org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:852) org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588) org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489) java.lang.Thread.run(Thread.java:619) Exception without any cause... I was trying to catch the exception with my custom Filter (LoggingFilter.java that you can see on the strack trace), using this code: try { filterChain.doFilter(servletRequest, servletResponse); } catch (Throwable e) { e.printStackTrace(); System.out.println("Stack trace:"); System.out.println(e.getStackTrace()); System.out.println("Cause:"); System.out.println(e.getCause()); } But it doesn't catch anything, the line 18 from the stack trace is this one: filterChain.doFilter(servletRequest, servletResponse); nothing gets caught by the try block. Anybody has any ideas about how could i get closer to the real cause?

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• How to use c++0x thread in Android NDK?

  - by m-ric

  I am trying to compile this simple program with android-ndk-r8b: jni/hello_jni.cpp #include <iostream> #include <thread> void hello() { std::cout << "Hi i'm a thread!!!" << std::endl; } int main() { std::thread th(hello); th.join(); return 0; } jni/Application.mk APP_OPTIM := release APP_MODULES := hello_thread APP_STL := gnustl_static jni/Android.mk LOCAL_PATH := $(call my-dir) include $(CLEAR_VARS) LOCAL_CPPFLAGS += -std=c++0x -frtti LOCAL_MODULE := hello_thread LOCAL_LDLIBS := -L$(SYSROOT)/usr/lib -pthread LOCAL_SRC_FILES := hello_thread.cpp include $(BUILD_EXECUTABLE) ndk-build returns me an error arguin that 'thread' is not a member of 'std'. I issued ndk-build -n to get the compilation command and issued it alone in my shell: /home/evigier/android-ndk-r8b/toolchains/arm-linux-androideabi-4.6/prebuilt/linux-x86/bin/arm-linux-androideabi-g++ -MMD -MP -MF /home/evigier/eclipse_workspace/hello_thread/obj/local/armeabi/objs/hello_thread/hello_thread.o.d -fpic -ffunction-sections -funwind-tables -fstack-protector -D__ARM_ARCH_5__ -D__ARM_ARCH_5T__ -D__ARM_ARCH_5E__ -D__ARM_ARCH_5TE__ -march=armv5te -mtune=xscale -msoft-float -fno-exceptions -fno-rtti -mthumb -Os -fomit-frame-pointer -fno-strict-aliasing -finline-limit=64 -I/home/evigier/android-ndk-r8b/sources/cxx-stl/gnu-libstdc++/4.6/include -I/home/evigier/android-ndk-r8b/sources/cxx-stl/gnu-libstdc++/4.6/libs/armeabi/include -I/home/evigier/eclipse_workspace/hello_thread/jni -DANDROID -Wa,--noexecstack -std=c++0x -frtti -O2 -DNDEBUG -g -I/home/evigier/android-ndk-r8b/platforms/android-14/arch-arm/usr/include -c /home/evigier/eclipse_workspace/hello_thread/jni/hello_thread.cpp -o /home/evigier/eclipse_workspace/hello_thread/obj/local/armeabi/objs/hello_thread/hello_thread.o Compile++ thumb : hello_thread <= hello_thread.cpp In file included from /home/evigier/android-ndk-r8b/platforms/android-14/arch-arm/usr/include/stdio.h:55:0, from /home/evigier/android-ndk-r8b/platforms/android-14/arch-arm/usr/include/wchar.h:33, from /home/evigier/android-ndk-r8b/sources/cxx-stl/gnu-libstdc++/4.6/include/cwchar:46, from /home/evigier/android-ndk-r8b/sources/cxx-stl/gnu-libstdc++/4.6/include/bits/postypes.h:42, from /home/evigier/android-ndk-r8b/sources/cxx-stl/gnu-libstdc++/4.6/include/iosfwd:42, from /home/evigier/android-ndk-r8b/sources/cxx-stl/gnu-libstdc++/4.6/include/ios:39, from /home/evigier/android-ndk-r8b/sources/cxx-stl/gnu-libstdc++/4.6/include/ostream:40, from /home/evigier/android-ndk-r8b/sources/cxx-stl/gnu-libstdc++/4.6/include/iostream:40, from jni/hello_thread.cpp:4: /home/evigier/android-ndk-r8b/platforms/android-14/arch-arm/usr/include/sys/types.h:124:9: error: 'uint64_t' does not name a type /home/evigier/eclipse_workspace/hello_thread/jni/hello_thread.cpp: In function 'int main()': /home/evigier/eclipse_workspace/hello_thread/jni/hello_thread.cpp:14:5: error: 'thread' is not a member of 'std' /home/evigier/eclipse_workspace/hello_thread/jni/hello_thread.cpp:14:17: error: expected ';' before 'th' /home/evigier/eclipse_workspace/hello_thread/jni/hello_thread.cpp:15:5: error: 'th' was not declared in this scope I read a lot of threads/questions about POSIX threads and C++ threads, but still cannot find my answer. My arm-linux-androideabi/include/c++/4.6/thread file defines class thread in std only: #if defined(_GLIBCXX_HAS_GTHREADS) && defined(_GLIBCXX_USE_C99_STDINT_TR1) They don't seem to be defined in my sdk (c++config.h). But how can I possibly turn them on safely? Do i need to compile my own toolchain to use (non-p)threads? My host computer is : Linux evigier-ThinkPad-X220 3.0.0-17-generic #30-Ubuntu SMP Thu Mar 8 20:45:39 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux

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• How to override PHP configuration when running in CGI mode

  - by Fitrah M

  There are some tutorials out there telling me how to override PHP configuration when it is running in CGI mode. But I'm still confused because lots of them assume that the server is running on Linux. While I need to do that also in Windows. My hosting is indeed using Linux but my local development computer is using Windows XP with Xampp 1.7.3. So I need to do that in my local computer first, then I want to change the configuration on hosting server. The PHP in my hosting server is already run as CGI while in my local computer still run as Apache module. At this point, the processes that I understand are: Change PHP to work in CGI mode. I did this by commenting these two line in "httpd-xampp.conf": # LoadFile "C:/xampp/php/php5ts.dll" # LoadModule php5_module modules/php5apache2_2.dll Create "cgi-bin" directory in DocumentRoot. My DocumentRoot is in "D:\www\" (I'm using apache with virtual host). So it is now "D:\www\cgi-bin". Change the default "cgi-bin" directory settings from "C:/xampp/cgi-bin/" to "D:\www\cgi-bin": ScriptAlias /cgi-bin/ "D:/www/cgi-bin/" <Directory "D:\www\cgi-bin"> Options MultiViews Indexes SymLinksIfOwnerMatch Includes ExecCGI AllowOverride All Allow from All </Directory> At this point, my PHP is now running as CGI. I checked this with phpinfo(). It tells me that Server API is now CGI/FastCGI. Now I want to override php configuration. I copied 'php.ini' file to "D:\www\cgi-bin" and modify upload_max_filesize setting from 128M to 10M. Create 'php.cgi' file in "D:\www\cgi-bin" and put these code inside the file: #!/bin/sh /usr/local/cpanel/cgi-sys/php5 -c /home/user/public_html/cgi-bin/ That's it. I'm stuck at this point. All of tutorials tell me to create 'php.cgi' file and put shell code inside the file. How to do the 6th step on Windows? I know the next step is to create handler in .htaccess file to load that 'php.cgi'. And also, because I will also need to change PHP configuration on my hosting server (Linux), is the 6th step above right? Some tutorial tells to insert these line instead of above: #!/bin/sh export PHPRC=/site/ini/1 exec /cgi-bin/php5.cgi I'm sorry if my question is not clear. I'm a new member and this is my first question in this site. Thank you.

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• IronPython and Nodebox in C#

  - by proxylittle

  My plan: I'm trying to setup my C# project to communicate with Nodebox to call a certain function which populates a graph and draws it in a new window. Current situation: [fixed... see Update2] I have already included all python-modules needed, but im still getting a Library 'GL' not found it seems that the pyglet module needs a reference to GL/gl.h, but can't find it due to IronPython behaviour. Requirement: The project needs to stay as small as possible without installing new packages. Thats why i have copied all my modules into the project-folder and would like to keep it that or a similar way. My question: Is there a certain workaround for my problem or a fix for the library-folder missmatch. Have read some articles about Tao-Opengl and OpenTK but can't find a good solution. Update1: Updated my sourcecode with a small pyglet window-rendering example. Problem is in pyglet and referenced c-Objects. How do i include them in my c# project to be called? No idea so far... experimenting alittle now. Keeping you updated. SampleCode C#: ScriptRuntimeSetup setup = Python.CreateRuntimeSetup(null); ScriptRuntime runtime = new ScriptRuntime(setup); ScriptEngine engine = Python.GetEngine(runtime); ScriptSource source = engine.CreateScriptSourceFromFile("test.py"); ScriptScope scope = engine.CreateScope(); source.Execute(scope); SampleCode Python (test.py): from nodebox.graphics import * from nodebox.graphics.physics import Vector, Boid, Flock, Obstacle flock = Flock(50, x=-50, y=-50, width=700, height=400) flock.sight(80) def draw(canvas): canvas.clear() flock.update(separation=0.4, cohesion=0.6, alignment=0.1, teleport=True) for boid in flock: push() translate(boid.x, boid.y) scale(0.5 + boid.depth) rotate(boid.heading) arrow(0, 0, 15) pop() canvas.size = 600, 300 def main(canvas): canvas.run(draw) Update2: Line 139 [pyglet/lib.py] sys.platform is not win32... there was the error. Fixed it by just using the line: from pyglet.gl.lib_wgl import link_GL, link_GLU, link_WGL Now the following Error: 'module' object has no attribute '_getframe' Kind of a pain to fix it. Updating with results... Update3: Fixed by adding following line right after first line in C#-Code: setup.Options["Frames"] = true; Current Problem: No module named unicodedata, but in Python26/DLLs is only a *.pyd file`. So.. how do i implement it now?!

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• decrypt an encrypted value ?

  - by jim

  I have an old Paradox database (I can convert it to Access 2007) which contains more then 200,000 records. This database has two columns: the first one is named "Word" and the second one is named "Mean". It is a dictionary database and my client wants to convert this old database to ASP.NET and SQL. However, we don't know what key or method is used to encrypt or encode the "Mean" column which is in the Unicode format. The software itself has been written in Delphi 7 and we don't have the source code. My client only knows the credentials for logging in to database. The problem is decoding the Mean column. What I do have is the compiled windows application and the Paradox database. This software can decode the "Mean" column for each "Word" so the method and/or key is in its own compiled code(.exe) or one of the files in its directory. For example, we know that in the following row the "Zymurgy" exactly means "???? ??? ????? ?? ???? ????, ????? ?????" since the application translates it like that. Here is what the record looks like when I open the database in Access: Word Mean Zymurgy 5OBnGguKPdDAd7L2lnvd9Lnf1mdd2zDBQRxngsCuirK5h91sVmy0kpRcue/+ql9ORmP99Mn/QZ4= Therefore we're trying to discover how the value in the Mean column is converted to "???? ??? ????? ?? ???? ????, ????? ?????". I think the "Mean" column value in above row is encoded in Base64 string format, but decoding the Base64 string does not yet result in the expected text. The extensions for files in the win app directory are dll, CCC, DAT, exe (other than the main app file), SYS, FAM, MB, PX, TV, VAL. Any kind of help is appreciated. Additional information: guys! the creators are not that stupid to save the values only in encoded form. they're definitely encrypted them. so i guess we have to look for the key.

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• Creating a tiled map with blender

  - by JamesB

  I'm looking at creating map tiles based on a 3D model made in blender, The map is 16 x 16 in blender. I've got 4 different zoom levels and each tile is 100 x 100 pixels. The entire map at the most zoomed out level is 4 x 4 tiles constructing an image of 400 x 400. The most zoomed in level is 256 x 256 obviously constructing an image of 25600 x 25600 What I need is a script for blender that can create the tiles from the model. I've never written in python before so I've been trying to adapt a couple of the scripts which are already there. So far I've come up with a script, but it doesn't work very well. I'm having real difficulties getting the tiles to line up seamlessly. I'm not too concerned about changing the height of the camera as I can always create the same zoomed out tiles at 6400 x 6400 images and split the resulting images into the correct tiles. Here is what I've got so far... #!BPY """ Name: 'Export Map Tiles' Blender: '242' Group: 'Export' Tip: 'Export to Map' """ import Blender from Blender import Scene,sys from Blender.Scene import Render def init(): thumbsize = 200 CameraHeight = 4.4 YStart = -8 YMove = 4 XStart = -8 XMove = 4 ZoomLevel = 1 Path = "/Images/Map/" Blender.drawmap = [thumbsize,CameraHeight,YStart,YMove,XStart,XMove,ZoomLevel,Path] def show_prefs(): buttonthumbsize = Blender.Draw.Create(Blender.drawmap[0]); buttonCameraHeight = Blender.Draw.Create(Blender.drawmap[1]) buttonYStart = Blender.Draw.Create(Blender.drawmap[2]) buttonYMove = Blender.Draw.Create(Blender.drawmap[3]) buttonXStart = Blender.Draw.Create(Blender.drawmap[4]) buttonXMove = Blender.Draw.Create(Blender.drawmap[5]) buttonZoomLevel = Blender.Draw.Create(Blender.drawmap[6]) buttonPath = Blender.Draw.Create(Blender.drawmap[7]) block = [] block.append(("Image Size", buttonthumbsize, 0, 500)) block.append(("Camera Height", buttonCameraHeight, -0, 10)) block.append(("Y Start", buttonYStart, -10, 10)) block.append(("Y Move", buttonYMove, 0, 5)) block.append(("X Start", buttonXStart,-10, 10)) block.append(("X Move", buttonXMove, 0, 5)) block.append(("Zoom Level", buttonZoomLevel, 1, 10)) block.append(("Export Path", buttonPath,0,200,"The Path to save the tiles")) retval = Blender.Draw.PupBlock("Draw Map: Preferences" , block) if retval: Blender.drawmap[0] = buttonthumbsize.val Blender.drawmap[1] = buttonCameraHeight.val Blender.drawmap[2] = buttonYStart.val Blender.drawmap[3] = buttonYMove.val Blender.drawmap[4] = buttonXStart.val Blender.drawmap[5] = buttonXMove.val Blender.drawmap[6] = buttonZoomLevel.val Blender.drawmap[7] = buttonPath.val Export() def Export(): scn = Scene.GetCurrent() context = scn.getRenderingContext() def cutStr(str): #cut off path leaving name c = str.find("\\") while c != -1: c = c + 1 str = str[c:] c = str.find("\\") str = str[:-6] return str #variables from gui: thumbsize,CameraHeight,YStart,YMove,XStart,XMove,ZoomLevel,Path = Blender.drawmap XMove = XMove / ZoomLevel YMove = YMove / ZoomLevel Camera = Scene.GetCurrent().getCurrentCamera() Camera.LocZ = CameraHeight / ZoomLevel YStart = YStart + (YMove / 2) XStart = XStart + (XMove / 2) #Point it straight down Camera.RotX = 0 Camera.RotY = 0 Camera.RotZ = 0 TileCount = 4**ZoomLevel #Because the first thing we do is move the camera, start it off the map Camera.LocY = YStart - YMove for i in range(0,TileCount): Camera.LocY = Camera.LocY + YMove Camera.LocX = XStart - XMove for j in range(0,TileCount): Camera.LocX = Camera.LocX + XMove Render.EnableDispWin() context.extensions = True context.renderPath = Path #setting thumbsize context.imageSizeX(thumbsize) context.imageSizeY(thumbsize) #could be put into a gui. context.imageType = Render.PNG context.enableOversampling(0) #render context.render() #save image ZasString = '%s' %(int(ZoomLevel)) XasString = '%s' %(int(j+1)) YasString = '%s' %(int((3-i)+1)) context.saveRenderedImage("Z" + ZasString + "X" + XasString + "Y" + YasString) #close the windows Render.CloseRenderWindow() try: type(Blender.drawmap) except: #print 'initialize extern variables' init() show_prefs()

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• WPF Choppy Animation

  - by Chris Dunaway

  WPF Windows-XP SP3 I'm having a problem with a simple WPF animation. I use the following Xaml code (in XamlPad and also in a WPF project): <Page xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:sys="clr-namespace:System;assembly=mscorlib" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" > <Border Name="MyBorder" BorderThickness="10" BorderBrush="Blue" CornerRadius="10" Background="DarkRed" > <Rectangle Name="MyRectangle" Margin="10" StrokeDashArray="2.0,1.0" StrokeThickness="10" RadiusX="10" RadiusY="10" Stroke="Black" StrokeDashOffset="0"> <Rectangle.Triggers> <EventTrigger RoutedEvent="Rectangle.Loaded"> <BeginStoryboard> <Storyboard> <DoubleAnimation Storyboard.TargetName="MyRectangle" Storyboard.TargetProperty="StrokeDashOffset" From="0.0" To="3.0" Duration="0:0:1" RepeatBehavior="Forever" Timeline.DesiredFrameRate="30" /> </Storyboard> </BeginStoryboard> </EventTrigger> </Rectangle.Triggers> </Rectangle> </Border> </Page> It has the effect of causing the border to animate around the rectangle. After a fresh reboot of the machine, this animation is nice and smooth. However, I tend to leave my machine on all the time and after a period time elapses (I don't know how long), the animation starts stuttering and becomes choppy. I thought that it may be memory or resource issues, but after shutting down all other apps and any services that seem unnecessary, the stuttering still continues. However, after a system reboot, the animation is smooth again! I get the same symptoms in a WPF app or in XamlPad. In the case of the app, it doesn't seem to make any difference whether I run in the debugger or if I run the executable directly. I applied the patch at this link: http://support.microsoft.com/kb/981741 and I thought that it had taken care of the issue, but it seems not to have. I have seen some posts that might indicate that using transparency might affect animation, but as you can see, my xaml does not use transparency. Can anyone give me some suggestions on how to determine what the problem is? Are there any WPF diagnostic tools that might help? UPDATE: I have checked my video drivers and they are the latest version. (nVidia GeForce 8400 GS)

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• RVM can't switch to Ruby 1.9.1

  - by Marco

  I installed Ruby 1.8.7 through apt-get. I then installed 1.9.1 through RVM. The RVM 1.9.1 installation was successful: root: rvm install 1.9.1 <i>Installing Ruby from source to: /usr/local/rvm/rubies/ruby-1.9.1-p378 </i> <i>/usr/local/rvm/src/ruby-1.9.1-p378 has already been extracted. </i> <i>Configuring ruby-1.9.1-p378, this may take a while depending on your cpu(s)... </i> <i>Compiling ruby-1.9.1-p378, this may take a while, depending on your cpu(s)... </i> <i>Installing ruby-1.9.1-p378 </i> <i>Installation of ruby-1.9.1-p378 is complete. </i> <i>Updating rubygems for /usr/local/rvm/gems/ruby-1.9.1-p378@global </i> <i>Updating rubygems for /usr/local/rvm/gems/ruby-1.9.1-p378 </i> <i>adjusting shebangs for ruby-1.9.1-p378 (gem irb erb ri rdoc testrb rake). </i> <i>Installing gems for ruby-1.9.1-p378 (rdoc rake). </i> <i>Installing rdoc to /usr/local/rvm/gems/ruby-1.9.1-p378@global </i> <i>Installing rdoc to /usr/local/rvm/gems/ruby-1.9.1-p378 </i> <i>Installing rake to /usr/local/rvm/gems/ruby-1.9.1-p378@global </i> <i>Installing rake to /usr/local/rvm/gems/ruby-1.9.1-p378 </i> <i>Installation of gems for ruby-1.9.1-p378 is complete. </i> However, I cannot get RVM to switch to the new version: root: ruby -v ruby 1.8.7 (2008-08-11 patchlevel 72) [x86_64-linux] root: rvm 1.9.1 root: ruby -v ruby 1.8.7 (2008-08-11 patchlevel 72) [x86_64-linux] Despite that, it seems to have installed fine: root: /usr/local/rvm/bin/ruby-1.9.1-p378 -v ruby 1.9.1p378 (2010-01-10 revision 26273) [x86_64-linux] I also tried setting the rvm --default to 1.9.1 but that did not help. Why can't RVM switch to the new version? Should I just set an alias for ruby=1.9.1? *running Debian

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• SqlMetal, Sql Server 2008 database, Table with HierachyID, dal cs file is created sometimes ?

  - by judek.mp

  I have 2 databases with a 2 tables with HierachyID fields. For one database I can get a dal cs file, for the other database I cannot get a dal cs file ? HBus is a database I can get the dal cs for, ... SqlMetal /server:.\SQLSERVER2008 /database:HBus /code:HBusDC.cs /views /functions /sprocs /namespace:HBusDC /context:HBusDataContext This kicks me out a file, ... which works, but excludes the HierarchyID field for the table and includes all other fields for that table. This is OK I do not mind. The above cmd line kicks out an warning but still produces a file, like so SqlMetal /server:.\SQLSERVER2008 /database:HBus /code:HBusDC.cs /views /functions /sprocs /namespace:HBusDC /context:HBusDataContext Microsoft (R) Database Mapping Generator 2008 version 1.00.30729 for Microsoft (R) .NET Framework version 3.5 Copyright (C) Microsoft Corporation. All rights reserved. Warning : SQM1021: Unable to extract column 'OrgNode' of Table 'dbo.HMsg' from SqlServer because the column's DbType is a user-defined type (UDT). Warning : SQM1021: Unable to extract column 'OrgNode' of Table 'dbo.vwHMsg' from SqlServer because the column's DbType is a user-defined type (UDT). HMsg is a table with a HierarchyID field. I have another database, Elf, almost the same thing but I get a warning and an Error when using sql metal and I do not get a dal cs file ... SqlMetal /server:.\SQLSERVER2008 /database:Elf /code:ElfDataContextDal.cs /views /functions /sprocs /namespace:HBusDC /context:HBusDataContext An error as well as the warning and the cs file fails to appear on my disc, ... :-( SqlMetal /server:.\SQLSERVER2008 /database:Elf /code:ElfDataContextDal.cs /views /functions /sprocs /namespace:HBusDC /context:HBusDataContext Microsoft (R) Database Mapping Generator 2008 version 1.00.30729 for Microsoft (R) .NET Framework version 3.5 Copyright (C) Microsoft Corporation. All rights reserved. Warning : SQM1021: Unable to extract column 'OrgNode' of Table 'dbo.EntityLink' from SqlServer because the column's DbType is a user-defined type (UDT). Error : Requested value 'ELF.SYS.HIERARCHYID' was not found. The fields are declared the same way in Elf db OrgNode [HierarchyID] null , in HBus db ... OrgNode [HierarchyID] null , Both databases are in the same instance of sql server 2008, so the HierarchyID is an inbuilt type, neither db has HierarchyID udt ,... cheers in advance for any replies ...

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• Eval ID on radiobutton in Datalist

  - by ravi

  my code gota datalist with radio button and iv made it single selectable onitemdatabound....now im trying to evaluate a hiddenfield on basis of selected radio button my code goes like this aspx code <asp:DataList ID="DataList1" runat="server" RepeatColumns = "4" CssClass="datalist1" RepeatLayout = "Table" OnItemDataBound="SOMENAMEItemBound" CellSpacing="20" onselectedindexchanged="DataList1_SelectedIndexChanged"> <ItemTemplate> <br /> <table cellpadding = "5px" cellspacing = "0" class="dlTable"> <tr> <td align="center"> <a href="<%#Eval("FilePath")%>" target="_blank"><asp:Image ID="Image1" runat="server" CssClass="imu" ImageUrl = '<%# Eval("FilePath")%>' Width = "100px" Height = "100px" style ="cursor:pointer" /> </td> </tr> <tr > <td align="center"> <asp:RadioButton ID="rdb" runat="server" OnCheckedChanged="rdb_click" AutoPostBack="True" /> <asp:HiddenField ID="HiddenField1" runat="server" Value = '<%#Eval("ID")%>' /> </td> </tr> </table> </ItemTemplate> </asp:DataList> code behind protected void SOMENAMEItemBound(object sender, DataListItemEventArgs e) { RadioButton rdb; rdb = (RadioButton)e.Item.FindControl("rdb"); if (rdb != null) rdb.Attributes.Add("onclick", "CheckOnes(this);"); } protected void rdb_click(object sender, EventArgs e) { for (int i = 0; i < DataList1.Items.Count; i++) { RadioButton rdb; rdb = (RadioButton)DataList1.Items[i].FindControl("rdb"); if (rdb != null) { if (rdb.Checked) { HiddenField hf = (HiddenField)DataList1.Items[i].FindControl("HiddenField1"); Response.Write(hf.Value); } } } } the javascript im using... function CheckOnes(spanChk){ var oItem = spanChk.children; var theBox= (spanChk.type=="radio") ? spanChk : spanChk.children.item[0]; xState=theBox.unchecked; elm=theBox.form.elements; for(i=0;i<elm.length;i++) if(elm[i].type=="radio" && elm[i].id!=theBox.id) { elm[i].checked=xState; } } iam getting an error like this Microsoft JScript runtime error: Sys.WebForms.PageRequestManagerParserErrorException: The message received from the server could not be parsed. Common causes for this error are when the response is modified by calls to Response.Write(), response filters, HttpModules, or server trace is enabled. Details: Error parsing near 'pload Demonstration|'. is there any other way to do this or can nyone plz help to get rid of this problem

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• Python form POST using urllib2 (also question on saving/using cookies)

  - by morpheous

  I am trying to write a function to post form data and save returned cookie info in a file so that the next time the page is visited, the cookie information is sent to the server (i.e. normal browser behavior). I wrote this relatively easily in C++ using curlib, but have spent almost an entire day trying to write this in Python, using urllib2 - and still no success. This is what I have so far: import urllib, urllib2 import logging # the path and filename to save your cookies in COOKIEFILE = 'cookies.lwp' cj = None ClientCookie = None cookielib = None logger = logging.getLogger(__name__) # Let's see if cookielib is available try: import cookielib except ImportError: logger.debug('importing cookielib failed. Trying ClientCookie') try: import ClientCookie except ImportError: logger.debug('ClientCookie isn\'t available either') urlopen = urllib2.urlopen Request = urllib2.Request else: logger.debug('imported ClientCookie succesfully') urlopen = ClientCookie.urlopen Request = ClientCookie.Request cj = ClientCookie.LWPCookieJar() else: logger.debug('Successfully imported cookielib') urlopen = urllib2.urlopen Request = urllib2.Request # This is a subclass of FileCookieJar # that has useful load and save methods cj = cookielib.LWPCookieJar() login_params = {'name': 'anon', 'password': 'pass' } def login(theurl, login_params): init_cookies(); data = urllib.urlencode(login_params) txheaders = {'User-agent' : 'Mozilla/4.0 (compatible; MSIE 5.5; Windows NT)'} try: # create a request object req = Request(theurl, data, txheaders) # and open it to return a handle on the url handle = urlopen(req) except IOError, e: log.debug('Failed to open "%s".' % theurl) if hasattr(e, 'code'): log.debug('Failed with error code - %s.' % e.code) elif hasattr(e, 'reason'): log.debug("The error object has the following 'reason' attribute :"+e.reason) sys.exit() else: if cj is None: log.debug('We don\'t have a cookie library available - sorry.') else: print 'These are the cookies we have received so far :' for index, cookie in enumerate(cj): print index, ' : ', cookie # save the cookies again cj.save(COOKIEFILE) #return the data return handle.read() # FIXME: I need to fix this so that it takes into account any cookie data we may have stored def get_page(*args, **query): if len(args) != 1: raise ValueError( "post_page() takes exactly 1 argument (%d given)" % len(args) ) url = args[0] query = urllib.urlencode(list(query.iteritems())) if not url.endswith('/') and query: url += '/' if query: url += "?" + query resource = urllib.urlopen(url) logger.debug('GET url "%s" => "%s", code %d' % (url, resource.url, resource.code)) return resource.read() When I attempt to log in, I pass the correct username and pwd,. yet the login fails, and no cookie data is saved. My two questions are: can anyone see whats wrong with the login() function, and how may I fix it? how may I modify the get_page() function to make use of any cookie info I have saved ?

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• Java map / nio / NFS issue causing a VM fault: "a fault occurred in a recent unsafe memory access op

  - by Matthew Bloch

  I have written a parser class for a particular binary format (nfdump if anyone is interested) which uses java.nio's MappedByteBuffer to read through files of a few GB each. The binary format is just a series of headers and mostly fixed-size binary records, which are fed out to the called by calling nextRecord(), which pushes on the state machine, returning null when it's done. It performs well. It works on a development machine. On my production host, it can run for a few minutes or hours, but always seems to throw "java.lang.InternalError: a fault occurred in a recent unsafe memory access operation in compiled Java code", fingering one of the Map.getInt, getShort methods, i.e. a read operation in the map. The uncontroversial (?) code that sets up the map is this: /** Set up the map from the given filename and position */ protected void open() throws IOException { // Set up buffer, is this all the flexibility we'll need? channel = new FileInputStream(file).getChannel(); MappedByteBuffer map1 = channel.map(FileChannel.MapMode.READ_ONLY, 0, channel.size()); map1.load(); // we want the whole thing, plus seems to reduce frequency of crashes? map = map1; // assumes the host writing the files is little-endian (x86), ought to be configurable map.order(java.nio.ByteOrder.LITTLE_ENDIAN); map.position(position); } and then I use the various map.get* methods to read shorts, ints, longs and other sequences of bytes, before hitting the end of the file and closing the map. I've never seen the exception thrown on my development host. But the significant point of difference between my production host and development is that on the former, I am reading sequences of these files over NFS (probably 6-8TB eventually, still growing). On my dev machine, I have a smaller selection of these files locally (60GB), but when it blows up on the production host it's usually well before it gets to 60GB of data. Both machines are running java 1.6.0_20-b02, though the production host is running Debian/lenny, the dev host is Ubuntu/karmic. I'm not convinced that will make any difference. Both machines have 16GB RAM, and are running with the same java heap settings. I take the view that if there is a bug in my code, there is enough of a bug in the JVM not to throw me a proper exception! But I think it is just a particular JVM implementation bug due to interactions between NFS and mmap, possibly a recurrence of 6244515 which is officially fixed. I already tried adding in a "load" call to force the MappedByteBuffer to load its contents into RAM - this seemed to delay the error in the one test run I've done, but not prevent it. Or it could be coincidence that was the longest it had gone before crashing! If you've read this far and have done this kind of thing with java.nio before, what would your instinct be? Right now mine is to rewrite it without nio :)

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• Why does Python's math.factorial not play nice with threads?

  - by W1N9Zr0

  Why does math.factorial act so weird in a thread? Here is an example, it creates three threads: thread that just sleeps for a while thread that increments an int for a while thread that does math.factorial on a large number. It calls start on the threads, then join with a timeout The sleep and spin threads work as expected and return from start right away, and then sit in the join for the timeout. The factorial thread on the other hand does not return from start until it runs to the end! import sys from threading import Thread from time import sleep, time from math import factorial # Helper class that stores a start time to compare to class timed_thread(Thread): def __init__(self, time_start): Thread.__init__(self) self.time_start = time_start # Thread that just executes sleep() class sleep_thread(timed_thread): def run(self): sleep(15) print "st DONE:\t%f" % (time() - time_start) # Thread that increments a number for a while class spin_thread(timed_thread): def run(self): x = 1 while x < 120000000: x += 1 print "sp DONE:\t%f" % (time() - time_start) # Thread that calls math.factorial with a large number class factorial_thread(timed_thread): def run(self): factorial(50000) print "ft DONE:\t%f" % (time() - time_start) # the tests print print "sleep_thread test" time_start = time() st = sleep_thread(time_start) st.start() print "st.start:\t%f" % (time() - time_start) st.join(2) print "st.join:\t%f" % (time() - time_start) print "sleep alive:\t%r" % st.isAlive() print print "spin_thread test" time_start = time() sp = spin_thread(time_start) sp.start() print "sp.start:\t%f" % (time() - time_start) sp.join(2) print "sp.join:\t%f" % (time() - time_start) print "sp alive:\t%r" % sp.isAlive() print print "factorial_thread test" time_start = time() ft = factorial_thread(time_start) ft.start() print "ft.start:\t%f" % (time() - time_start) ft.join(2) print "ft.join:\t%f" % (time() - time_start) print "ft alive:\t%r" % ft.isAlive() And here is the output on Python 2.6.5 on CentOS x64: sleep_thread test st.start: 0.000675 st.join: 2.006963 sleep alive: True spin_thread test sp.start: 0.000595 sp.join: 2.010066 sp alive: True factorial_thread test ft DONE: 4.475453 ft.start: 4.475589 ft.join: 4.475615 ft alive: False st DONE: 10.994519 sp DONE: 12.054668 I've tried this on python 2.6.5 on CentOS x64, 2.7.2 on Windows x86 and the factorial thread does not return from start on either of them until the thread is done executing. I've also tried this with PyPy 1.8.0 on Windows x86, and there result is slightly different. The start does return immediately, but then the join doesn't time out! sleep_thread test st.start: 0.001000 st.join: 2.001000 sleep alive: True spin_thread test sp.start: 0.000000 sp DONE: 0.197000 sp.join: 0.236000 sp alive: False factorial_thread test ft.start: 0.032000 ft DONE: 9.011000 ft.join: 9.012000 ft alive: False st DONE: 12.763000

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• Why does the rename() syscall prohibit moving a directory that I can't write to a different director

  - by Daniel Papasian

  I am trying to understand why this design decision was made with the rename() syscall in 4.2BSD. There's nothing I'm trying to solve here, just understand the rationale for the behavior itself. 4.2BSD saw the introduction of the rename() syscall for the purpose of allowing atomic renames/moves of files. From 4.3BSD-Reno/src/sys/ufs/ufs_vnops.c: /* * If ".." must be changed (ie the directory gets a new * parent) then the source directory must not be in the * directory heirarchy above the target, as this would * orphan everything below the source directory. Also * the user must have write permission in the source so * as to be able to change "..". We must repeat the call * to namei, as the parent directory is unlocked by the * call to checkpath(). */ if (oldparent != dp->i_number) newparent = dp->i_number; if (doingdirectory && newparent) { VOP_LOCK(fndp->ni_vp); error = ufs_access(fndp->ni_vp, VWRITE, tndp->ni_cred); VOP_UNLOCK(fndp->ni_vp); So clearly this check was added intentionally. My question is - why? Is this behavior supposed to be intuitive? The effect of this is that one cannot move a directory (located in a directory that one can write) that one cannot write to another directory that one can write to atomically. You can, however, create a new directory, move the links over (assuming one has read access to the directory), and then remove one's write bit on the directory. You just can't do so atomically. % cd /tmp % mkdir stackoverflow-question % cd stackoverflow-question % mkdir directory-1 % mkdir directory-2 % mkdir directory-1/directory-i-cant-write % echo "foo" > directory-1/directory-i-cant-write/contents % chmod 000 directory-1/directory-i-cant-write/contents % chmod 000 directory-1/directory-i-cant-write % mv directory-1/directory-i-cant-write directory-2 mv: rename directory-1/directory-i-cant-write to directory-2/directory-i-cant-write: Permission denied We now have a directory I can't write with contents I can't read that I can't move atomically. I can, however, achieve the same effect non-atomically by changing permissions, making the new directory, using ln to create the new links, and changing permissions. (Left as an exercise to the reader) . and .. are special cased already, so I don't particularly buy that it is intuitive that if I can't write a directory I can't "change .." which is what the source suggests. Is there any reason for this besides it being the perceived correct behavior by the author of the code? Is there anything bad that can happen if we let people atomically move directories (that they can't write) between directories that they can write?

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• parent process, and a child process..

  - by icelated

  I am trying to write a program that The parent process will take the arguments to main() and send the characters in them one at a time to the child process through a pipe (one call to write for each character). The child process will count the characters sent to it by the parent process and print out the number of characters it received from the parent. The child process should not use the arguments to main() in any way whatsoever. The child should return normally and not have the parent kill the child. Am i counting the arguments right? am i sending the arguments in one at a time, and am i reaping the child? #include <sys/wait.h> #include <stdio.h> #include <stdlib.h> #include <unistd.h> #include <string.h> #define size = 100; int main(int argc, char *argv[]) { int i, count =0; int c; int fdest[2]; // for pipe pid_t pid; //process IDs char buffer[BUFSIZ]; if (pipe(fdest) < 0) /* attempt to create pipe */ perror( "pipe" ); if ((pid = fork()) < 0) /* attempt to create child / parent process */ { perror( "fork" ); } /* parent process */ else if (pid > 0) { close(fdest[0]); for (i=1; i < argc; ++i) { for (c=0; c < strlen(argv[i]); ++c) { write(fdest[1], &argv[i][c], 1); } } close(fdest[1]); wait(NULL); exit(0); } else { /* child Process */ close(fdest[1]); while (read(fdest[0], &buffer, 1) > 0) { count++; } printf("\nchild: counted %d characters\n", count); } wait(NULL); exit(0); }

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• dbms_xmlschema fail to validate with complexType

  - by Andrew

  Preface: This works on one Oracle 11gR1 (Solaris 64) database and not on a second and we can't figure out the difference between the two databases. Somehow the complexType causes the validation to fail with this error: ORA-31154: invalid XML document ORA-19202: Error occurred in XML processing LSX-00200: element "shiporder" not empty ORA-06512: at "SYS.XMLTYPE", line 354 ORA-06512: at line 13 But the schema is valid (passes this online test: http://www.xmlme.com/Validator.aspx) -- Cleanup any existing schema begin dbms_xmlschema.deleteschema('shiporder.xsd',dbms_xmlschema.DELETE_CASCADE); end; -- Define the problem schema (adapted from http://www.w3schools.com/schema/schema_example.asp) begin dbms_xmlschema.registerSchema('shiporder.xsd','<?xml version="1.0" encoding="ISO-8859-1" ?> <xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"> <xs:element name="shiporder"> <xs:complexType> <xs:sequence> <xs:element name="orderperson" type="xs:string"/> </xs:sequence> </xs:complexType> </xs:element> </xs:schema>',owner=>'SCOTT'); end; -- Attempt to validate declare bbb xmltype; begin bbb := XMLType('<?xml version="1.0" encoding="ISO-8859-1"?> <shiporder xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="shiporder.xsd"> <orderperson>John Smith</orderperson> </shiporder>'); XMLType.schemaValidate(bbb); end; Now if I gut the schema definition and leave only a string in the XML then the validation passes: begin dbms_xmlschema.deleteschema('shiporder.xsd',dbms_xmlschema.DELETE_CASCADE); end; begin dbms_xmlschema.registerSchema('shiporder.xsd','<?xml version="1.0" encoding="ISO-8859-1" ?> <xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"> <xs:element name="shiporder" type="xs:string"/> </xs:schema>',owner=>'SCOTT'); end; DECLARE xml XMLTYPE; BEGIN xml := XMLTYPE('<?xml version="1.0" encoding="ISO-8859-1"?> <shiporder xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="shiporder.xsd"> John Smith </shiporder>'); XMLTYPE.schemaValidate(xml); END;

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• Yes, another thread question...

  - by Michael

  I can't understand why I am loosing control of my GUI even though I am implementing a thread to play a .wav file. Can someone pin point what is incorrect? #!/usr/bin/env python import wx, pyaudio, wave, easygui, thread, time, os, sys, traceback, threading import wx.lib.delayedresult as inbg isPaused = False isStopped = False class Frame(wx.Frame): def __init__(self): print 'Frame' wx.Frame.__init__(self, parent=None, id=-1, title="Jasmine", size=(720, 300)) #initialize panel panel = wx.Panel(self, -1) #initialize grid bag sizer = wx.GridBagSizer(hgap=20, vgap=20) #initialize buttons exitButton = wx.Button(panel, wx.ID_ANY, "Exit") pauseButton = wx.Button(panel, wx.ID_ANY, 'Pause') prevButton = wx.Button(panel, wx.ID_ANY, 'Prev') nextButton = wx.Button(panel, wx.ID_ANY, 'Next') stopButton = wx.Button(panel, wx.ID_ANY, 'Stop') #add widgets to sizer sizer.Add(pauseButton, pos=(1,10)) sizer.Add(prevButton, pos=(1,11)) sizer.Add(nextButton, pos=(1,12)) sizer.Add(stopButton, pos=(1,13)) sizer.Add(exitButton, pos=(5,13)) #initialize song time gauge #timeGauge = wx.Gauge(panel, 20) #sizer.Add(timeGauge, pos=(3,10), span=(0, 0)) #initialize menuFile widget menuFile = wx.Menu() menuFile.Append(0, "L&oad") menuFile.Append(1, "E&xit") menuBar = wx.MenuBar() menuBar.Append(menuFile, "&File") menuAbout = wx.Menu() menuAbout.Append(2, "A&bout...") menuAbout.AppendSeparator() menuBar.Append(menuAbout, "Help") self.SetMenuBar(menuBar) self.CreateStatusBar() self.SetStatusText("Welcome to Jasime!") #place sizer on panel panel.SetSizer(sizer) #initialize icon self.cd_image = wx.Image('cd_icon.png', wx.BITMAP_TYPE_PNG) self.temp = self.cd_image.ConvertToBitmap() self.size = self.temp.GetWidth(), self.temp.GetHeight() wx.StaticBitmap(parent=panel, bitmap=self.temp) #set binding self.Bind(wx.EVT_BUTTON, self.OnQuit, id=exitButton.GetId()) self.Bind(wx.EVT_BUTTON, self.pause, id=pauseButton.GetId()) self.Bind(wx.EVT_BUTTON, self.stop, id=stopButton.GetId()) self.Bind(wx.EVT_MENU, self.loadFile, id=0) self.Bind(wx.EVT_MENU, self.OnQuit, id=1) self.Bind(wx.EVT_MENU, self.OnAbout, id=2) #Load file usiing FileDialog, and create a thread for user control while running the file def loadFile(self, event): foo = wx.FileDialog(self, message="Open a .wav file...", defaultDir=os.getcwd(), defaultFile="", style=wx.FD_MULTIPLE) foo.ShowModal() self.queue = foo.GetPaths() self.threadID = 1 while len(self.queue) != 0: self.song = myThread(self.threadID, self.queue[0]) self.song.start() while self.song.isAlive(): time.sleep(2) self.queue.pop(0) self.threadID += 1 def OnQuit(self, event): self.Close() def OnAbout(self, event): wx.MessageBox("This is a great cup of tea.", "About Jasmine", wx.OK | wx.ICON_INFORMATION, self) def pause(self, event): global isPaused isPaused = not isPaused def stop(self, event): global isStopped isStopped = not isStopped class myThread (threading.Thread): def __init__(self, threadID, wf): self.threadID = threadID self.wf = wf threading.Thread.__init__(self) def run(self): global isPaused global isStopped self.waveFile = wave.open(self.wf, 'rb') #initialize stream self.p = pyaudio.PyAudio() self.stream = self.p.open(format = self.p.get_format_from_width(self.waveFile.getsampwidth()), channels = self.waveFile.getnchannels(), rate = self.waveFile.getframerate(), output = True) self.data = self.waveFile.readframes(1024) isPaused = False isStopped = False #main play loop, with pause event checking while self.data != '': # while isPaused != True: # if isStopped == False: self.stream.write(self.data) self.data = self.waveFile.readframes(1024) # elif isStopped == True: # self.stream.close() # self.p.terminate() self.stream.close() self.p.terminate() class App(wx.App): def OnInit(self): self.frame = Frame() self.frame.Show() self.SetTopWindow(self.frame) return True def main(): app = App() app.MainLoop() if __name__=='__main__': main()

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• Generate a list of file names based on month and year arithmetic

  - by MacUsers

  How can I list the numbers 01 to 12 (one for each of the 12 months) in such a way so that the current month always comes last where the oldest one is first. In other words, if the number is grater than the current month, it's from the previous year. e.g. 02 is Feb, 2011 (the current month right now), 03 is March, 2010 and 09 is Sep, 2010 but 01 is Jan, 2011. In this case, I'd like to have [09, 03, 01, 02]. This is what I'm doing to determine the year: for inFile in os.listdir('.'): if inFile.isdigit(): month = months[int(inFile)] if int(inFile) <= int(strftime("%m")): year = strftime("%Y") else: year = int(strftime("%Y"))-1 mnYear = month + ", " + str(year) I don't have a clue what to do next. What should I do here? Update: I think, I better upload the entire script for better understanding. #!/usr/bin/env python import os, sys from time import strftime from calendar import month_abbr vGroup = {} vo = "group_lhcb" SI00_fig = float(2.478) months = tuple(month_abbr) print "\n%-12s\t%10s\t%8s\t%10s" % ('VOs','CPU-time','CPU-time','kSI2K-hrs') print "%-12s\t%10s\t%8s\t%10s" % ('','(in Sec)','(in Hrs)','(*2.478)') print "=" * 58 for inFile in os.listdir('.'): if inFile.isdigit(): readFile = open(inFile, 'r') lines = readFile.readlines() readFile.close() month = months[int(inFile)] if int(inFile) <= int(strftime("%m")): year = strftime("%Y") else: year = int(strftime("%Y"))-1 mnYear = month + ", " + str(year) for line in lines[2:]: if line.find(vo)==0: g, i = line.split() s = vGroup.get(g, 0) vGroup[g] = s + int(i) sumHrs = ((vGroup[g]/60)/60) sumSi2k = sumHrs*SI00_fig print "%-12s\t%10s\t%8s\t%10.2f" % (mnYear,vGroup[g],sumHrs,sumSi2k) del vGroup[g] When I run the script, I get this: [root@serv07 usage]# ./test.py VOs CPU-time CPU-time kSI2K-hrs (in Sec) (in Hrs) (*2.478) ================================================== Jan, 2011 211201372 58667 145376.83 Dec, 2010 5064337 1406 3484.07 Feb, 2011 17506049 4862 12048.04 Sep, 2010 210874275 58576 145151.33 As I said in the original post, I like the result to be in this order instead: Sep, 2010 210874275 58576 145151.33 Dec, 2010 5064337 1406 3484.07 Jan, 2011 211201372 58667 145376.83 Feb, 2011 17506049 4862 12048.04 The files in the source directory reads like this: [root@serv07 usage]# ls -l total 3632 -rw-r--r-- 1 root root 1144972 Feb 9 19:23 01 -rw-r--r-- 1 root root 556630 Feb 13 09:11 02 -rw-r--r-- 1 root root 443782 Feb 11 17:23 02.bak -rw-r--r-- 1 root root 1144556 Feb 14 09:30 09 -rw-r--r-- 1 root root 370822 Feb 9 19:24 12 Did I give a better picture now? Sorry for not being very clear in the first place. Cheers!! Update @Mark Ransom This is the result from Mark's suggestion: [root@serv07 usage]# ./test.py VOs CPU-time CPU-time kSI2K-hrs (in Sec) (in Hrs) (*2.478) ========================================================== Dec, 2010 5064337 1406 3484.07 Sep, 2010 210874275 58576 145151.33 Feb, 2011 17506049 4862 12048.04 Jan, 2011 211201372 58667 145376.83 As I said before, I'm looking for the result to b printed in this order: Sep, 2010 - Dec, 2010 - Jan, 2011 - Feb, 2011 Cheers!!

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• ColdFusion's cfquery failing silently

  - by johnthexiii

  I have a query that retrieves a large amount of data. <cfsetting requesttimeout="9999999" > <cfquery name="randomething" datasource="ds" timeout="9999999" > SELECT col1, col2 FROM table </cfquery> <cfdump var="#randomething.recordCount#" /> <!---should be about 5 million rows ---> I can successfully retrieve the data with python's cx_Oracle and using sys.getsizeof on the python list returns 22621060, so about 21 megabytes. ColdFusion does not return an error on the page, and I can't find anything in any of the logs. Why is cfdump not showing the number of rows? Additional Information The reason for doing it this way is because I have about 8000 smaller queries to run against the randomthing query. In other words when I run those 8000 queries against the database it takes hours for that process to complete. I suspect this is because I am competing with several other database users, and the database is getting bogged down. The 8000 smaller queries are getting counts of col1 over a period of col2. SELECT count(col1) as count WHERE col2 < 20121109 AND col2 > 20121108 According to Adam Cameron's suggestions. cflog is suggesting that the query isn't finishing. I tried changing the queries timeout both in the code and in the CFIDE/administrator, apparently CF9 no long respects the timeout attribute, regardless of what I tried I couldn't get the query to timeout. I also started playing around with the maxrows attribute to see if I could discern any information that way. when maxrows is set to 1300000 everything works fine when maxrows is 1400000 or greater I get this error when maxrows is 2000000 I observe my original problem Update So this isn't a limit of cfquery. By using QueryNew then looping over it to add data and I can get well past the 2 million mark without any problems. I also created a ThinClient datasource using the information in this question, I didn't observe any change in behavior. The messages on the database end are SQL*Net message from client and SQL*Net more data to client I just discovered that by using the thin client along with blockfactor1="100" I can retrieve more rows (appx. 3000000).

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• C program using inotify to monitor multiple directories along with sub-directories?

  - by lakshmipathi

  I have program which monitors a directory (/test) and notify me. I want to improve this to monitor another directory (say /opt). And also how to monitor it's subdirectories , current i'll get notified if any changes made to files under /test . but i'm not getting any inotifcation if changes made sub-directory of /test, that is touch /test/sub-dir/files.txt .. Here my current code - hope this will help /* Simple example for inotify in Linux. inotify has 3 main functions. inotify_init1 to initialize inotify_add_watch to add monitor then inotify_??_watch to rm monitor.you the what to replace with ??. yes third one is inotify_rm_watch() */ #include <sys/inotify.h> int main(){ int fd,wd,wd1,i=0,len=0; char pathname[100],buf[1024]; struct inotify_event *event; fd=inotify_init1(IN_NONBLOCK); /* watch /test directory for any activity and report it back to me */ wd=inotify_add_watch(fd,"/test",IN_ALL_EVENTS); while(1){ //read 1024 bytes of events from fd into buf i=0; len=read(fd,buf,1024); while(i<len){ event=(struct inotify_event *) &buf[i]; /* check for changes */ if(event->mask & IN_OPEN) printf("%s :was opened\n",event->name); if(event->mask & IN_MODIFY) printf("%s : modified\n",event->name); if(event->mask & IN_ATTRIB) printf("%s :meta data changed\n",event->name); if(event->mask & IN_ACCESS) printf("%s :was read\n",event->name); if(event->mask & IN_CLOSE_WRITE) printf("%s :file opened for writing was closed\n",event->name); if(event->mask & IN_CLOSE_NOWRITE) printf("%s :file opened not for writing was closed\n",event->name); if(event->mask & IN_DELETE_SELF) printf("%s :deleted\n",event->name); if(event->mask & IN_DELETE) printf("%s :deleted\n",event->name); /* update index to start of next event */ i+=sizeof(struct inotify_event)+event->len; } } }

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