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grant write access to folder in unix  RSS feed

 
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Hi,

I have a web application which creates a folder in unix box for a particular request. I was able to create the folder but when other users try to write file to this folder it shows no write permission error. The folder is created by user1 and for user2 wont be able to modify the folder owned by user1.

Is it possible to grant write permission (all users) to the folder from java. I had a look at java.io.File api but could not find anything useful. Any help on this is appreciated.

Thanks,
Rajeev
 
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You can always call (using Runtime.exec or ProcessBuilder) the external program: chmod.
 
Rajeev Ravindran
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Thanks Rob!

I wrote a small java program to test ProcessBuilder and it worked fine but when i copied the same piece of code into my web application. I am getting exception . The application is deployed on solaris 10 so "chmod: not found " is making me confused. Any thoughts ?






08/11/24 14:03:59 bool : Folder Created !! yay.
08/11/24 14:03:59 Directories: /prj/public/apps/200811020_MSM7600 created

08/11/24 14:03:59 java.io.IOException: chmod: not found
08/11/24 14:03:59 at java.lang.UNIXProcess.forkAndExec(Native Method)
08/11/24 14:03:59 at java.lang.UNIXProcess.<init>(UNIXProcess.java:53)
08/11/24 14:03:59 at java.lang.ProcessImpl.start(ProcessImpl.java:65)
08/11/24 14:03:59 at java.lang.ProcessBuilder.start(ProcessBuilder.java:451)
08/11/24 14:03:59 at com.qualcomm.qct.fadb.factory.RMAJobImpl.createJobFolder(RMAJobImpl.java:147)
08/11/24 14:03:59 at com.qualcomm.qct.fadb.ui.bean.BaseHandler.createJobFolder(BaseHandler.java:1138)
08/11/24 14:03:59 at com.qualcomm.qct.fadb.ui.bean.RMAJobHandlerBean.saveJob(RMAJobHandlerBean.java:466)
08/11/24 14:03:59 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
08/11/24 14:03:59 at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
08/11/24 14:03:59 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
08/11/24 14:03:59 at java.lang.reflect.Method.invoke(Method.java:585)
08/11/24 14:03:59 at com.sun.el.parser.AstValue.invoke(AstValue.java:151)
08/11/24 14:03:59 at com.sun.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:283)
08/11/24 14:03:59 at com.sun.facelets.el.TagMethodExpression.invoke(TagMethodExpression.java:68)
08/11/24 14:03:59 at javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:77)
08/11/24 14:03:59 at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:91)
08/11/24 14:03:59 at javax.faces.component.UICommand.broadcast(UICommand.java:383)
08/11/24 14:03:59 at org.ajax4jsf.component.AjaxViewRoot.processEvents(AjaxViewRoot.java:317)
08/11/24 14:03:59 at org.ajax4jsf.component.AjaxViewRoot.broadcastEvents(AjaxViewRoot.java:292)
08/11/24 14:03:59 at org.ajax4jsf.component.AjaxViewRoot.processPhase(AjaxViewRoot.java:249)
08/11/24 14:03:59 at org.ajax4jsf.component.AjaxViewRoot.processApplication(AjaxViewRoot.java:462)


[ November 24, 2008: Message edited by: Rajeev Ravindran ]
 
Rajeev Ravindran
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ok nevermind Had to change lst.add("chmod"); to lst.add("/usr/bin/chmod"); to make it run from the app. i still need to work on my unix knowledge

Thanks,
 
It is sorta covered in the JavaRanch Style Guide.
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