https://bugzilla.kernel.org/show_bug.cgi?id=15875 Summary: Add options to disable POSIX acl for ext2/ext3/ext4 file systems Product: File System Version: 2.5 Platform: All OS/Version: Linux Tree: Mainline Status: NEW Severity: enhancement Priority: P1 Component: ext2 AssignedTo: fs_ext2@xxxxxxxxxxxxxxxxxxxx ReportedBy: t.artem@xxxxxxxxxxxx Regression: No VFAT becomes less of an option for many hardware producers and many of them will be glad to embrace ext2/ext3/ext4 filesystems but they have an inherent problem, they enforce POSIX ACLs. So, imagine a situation when Peter who has UID=63555 (he's in a corporate network and that's his real UID according to LDAP) formats his flash drive using ext2/ext3/ext4 filesystem, then uses sudo to recursively chown the whole filesystem for his own possession. Now, Peter comes to a less savvy Alice who wasn't given root permissions on her PC and she tries to open Peter's flash stick. Oops, Alice cannot open or read any file on it. I can come up with ten other different scenarios when ACLs are superfluous. Taking this situation into consideration it becomes clear that ACL's for removable storage is more a hassle than a security feature. So, I strongly suggest implementing a flag which tells the kernel to disregard all file/directory permissions on the aforementioned FS's. -- Configure bugmail: https://bugzilla.kernel.org/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are watching the assignee of the bug. -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
