Access to the files in /sys/firmware/efi/esrt has been restricted to
CAP_SYS_ADMIN since support for ESRT was added, but this seems overly
restrictive given that the files are read-only and just provide
information about UEFI firmware updates.
Remove the CAP_SYS_ADMIN restriction so that a non-root process can read
the files, provided a suitably-privileged process changes the file
ownership first. The files are still read-only and still owned by root
by default.
Signed-off-by: Nicholas Bishop <nicholasbishop@google.com>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
struct esre_entry *entry = to_entry(kobj);
struct esre_attribute *attr = to_attr(_attr);
struct esre_entry *entry = to_entry(kobj);
struct esre_attribute *attr = to_attr(_attr);
- /* Don't tell normal users what firmware versions we've got... */
- if (!capable(CAP_SYS_ADMIN))
- return -EACCES;
-
return attr->show(entry, buf);
}
return attr->show(entry, buf);
}