Directory permissions


 
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# 1  
Old 01-29-2013
Directory permissions

i have an application that writes to a directory. let's call the directory:

Code:
/var/app/

the permissions of this directory is:
Code:
drwxrwxr-x

Now the files that the application creates in this directory usually dont have read permissions for others.

i know there's something called setuid. what is the command to apply to /var/app that'll make it so that all files created underneath it at least has the following permissions:

Code:
drwxr--r--

# 2  
Old 01-29-2013
This User Gave Thanks to DGPickett For This Post:
# 3  
Old 01-29-2013
thanks. it looks like what i'm tryign to do is not possible.
# 4  
Old 01-29-2013
File permissions is one reason we invented servers, so you can submit your data to a service and all storage is owned by the server id.

Another way is to create a copy command that is setuid/setgid marked, so when people copy with it the file ownership is constant. Commands with set purposely ignore LD_LIBRARY_PATH when linking, so they need to be statically linked or linked with -R to remember library paths.

A root setuid command could be written and installed to setuid and setgid just the files in that directory to just that id and group.

Finally, a cron or looping daemon could poll for foreign files, rename them, cp -p them to the original name and delete the original.
This User Gave Thanks to DGPickett For This Post:
 
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