Linux parent directory permissions affect sub-directory file operations

The following shows that Tomcat made an error when deleting owner's own document, prompting permission denied.

This is because user Tomcat does not have W permissions in the document's parent directory permissions. Although Tomcat is the owner of the document, the deletion of the document is also a modification to the parent directory, so the user does not have permission to do so in the W permission without the parent directory.

drwxr-xr-x   2 root  root    4096 Nov 21 21:02 tomcatdrwxr-xr-x. 13 root  root    4096 May 30 21:42 usrdrwxr-xr-x. 19 root  root    4096 jul 15 02:29 var[[email protected] ~]# touch /tomcat/xxx[[email  protected] ~]# chown tomcat:tomcat /tomcat/xxx [[email protected] ~]#  ll /tomcat/xxx-rw-r--r-- 1 tomcat tomcat 0 nov 21 21:03 / Tomcat/xxx[[email protected] ~]# su - tomcat[[email protected] ~]$ rm  -rf /tomcat/xxx rm: cannot remove  '/tomcat/xxx ':  permission denied[[ email protected] ~]$ 

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Modify the permissions of the parent directory to give the user tomcat the permissions of W

[Email protected] tomcat]# chmod 757/tomcat

From this, user Tomcat has the W permission for the parent directory of the XXX document/TOMCAT, so the deletion succeeded

DRWXR-XRWX 2 root root 4096 Nov 21:03 tomcatdrwxr-xr-x.  Root root 4096 May 21:42 usrdrwxr-xr-x. Root root 4096 Jul 02:29 var[[email protected] tomcat]# su-tomcat[[email protected] ~]$ rm/tomcat/xxx [email Protected] ~]$ ll/tomcat/total 0[[email protected] ~]$

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You can also directly to the parent directory owner to Tomcat, the quickest way, here also used recursion, actually do not have to

[Email protected] tomcat]# chown-r Tomcat:tomcat/tomcat

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Linux parent directory permissions affect sub-directory file operations