Apologies, I gave the wrong filename. I'm attempting to read -r-------- 1 root root 4096 Jul 16 21:03 cpuinfo_cur_freq as an unprivileged user. Why is this not world readable by default? Best Regards, Ken On Mon, Jul 15, 2013 at 10:34 AM, Viresh Kumar <viresh.kumar@xxxxxxxxxx> wrote: > On Fri, Jul 12, 2013 at 2:25 PM, kernel kernel <kernel@xxxxxxxxxxxxx> wrote: >> I wish to read the file "/sys/devices/system/cpu/cpu0/cpufreq" as an >> unprivileged user. The default permissions on this file are: >> >> -r-------- 1 root root >> >> What is the rationale behind this? All other files in this directory >> are world readable. > > Permissions as shown on my Thinkpad with ubuntu 12.04 > > viresh@blr-linut-001:$ ll /sys/devices/system/cpu/cpu0/ > drwxr-xr-x 3 root root 0 Jul 11 17:53 cpufreq/ -- Ken O'Brien PhD Researcher Simulation Science and Extreme Events Cluster, 3B1, UCD CASL, 8 Belfield Business Park, Dublin 4, Ireland. -- To unsubscribe from this list: send the line "unsubscribe cpufreq" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html