[PATCH tty-next 6/6] devpts: Change the owner of /dev/pts/ptmx to the mounter of /dev/pts

In 99.99% of the cases only root in a user namespace can mount /dev/pts and in those cases the owner of /dev/pts/ptmx will remain root.root In the oddball case where someone else has CAP_SYS_ADMIN this code modifies the /dev/pts mount code to use current_fsuid and current_fsgid as the values to

[PATCH tty-next 6/6] devpts: Change the owner of /dev/pts/ptmx to the mounter of /dev/pts

In 99.99% of the cases only root in a user namespace can mount /dev/pts and in those cases the owner of /dev/pts/ptmx will remain root.root In the oddball case where someone else has CAP_SYS_ADMIN this code modifies the /dev/pts mount code to use current_fsuid and current_fsgid as the values to