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From 9361b771ad0b8fe1206469b89fc2eef9d13fe8b2 Mon Sep 17 00:00:00 2001
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From: Arnaldo Carvalho de Melo <acme@redhat.com>
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Date: Wed, 10 Jun 2015 19:44:20 -0300
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Subject: [PATCH 3/7] interrupts: Do not refrain from parsing the irq
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affinities for !root
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I.e. let the OS be the one to decide if access to this file is allowed
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or not, and non root users can see this, at least around 4.1-rc times:
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Running: procfs/procfs.py:
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31: {'affinity': [0, 1, 2, 3], 'type': 'PCI-MSI-edge', 'cpu': [178564, 0, 285828, 0], 'users': ['xhci_hcd']}
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30: {'affinity': [0, 1, 2, 3], 'type': 'PCI-MSI-edge', 'cpu': [342630, 0, 197229, 0], 'users': ['0000:00:1f.2']}
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35: {'affinity': [0, 1, 2, 3], 'type': 'PCI-MSI-edge', 'cpu': [858, 0, 565, 0], 'users': ['snd_hda_intel']}
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34: {'affinity': [0, 1, 2, 3], 'type': 'PCI-MSI-edge', 'cpu': [306, 0, 44, 0], 'users': ['thunderbolt']}
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And now 'tuna -Q' works for non root users:
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[acme@zoo python-linux-procfs]$ ../tuna/tuna-cmd.py -Q
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# users affinity
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0 timer 0,1,2,3
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8 rtc0 0,1,2,3
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9 acpi 0,1,2,3
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17 17-fasteoi brcmsmac 0,1,2,3
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22 22-fasteoi ehci_hcd:usb4 0,1,2,3
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23 23-fasteoi ehci_hcd:usb3 0,1,2,3
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26 pciehp 0,1,2,3
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27 pciehp 0,1,2,3
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28 pciehp 0,1,2,3
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29 pciehp 0,1,2,3
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30 0000:00:1f.2 0,1,2,3
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31 xhci_hcd 0,1,2,3
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32 i915 0,1,2,3
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33 mei_me 0,1,2,3
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34 thunderbolt 0,1,2,3
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35 snd_hda_intel 0,1,2,3
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[acme@zoo python-linux-procfs]$
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Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Signed-off-by: John Kacur <jkacur@redhat.com>
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---
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procfs/procfs.py | 2 --
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1 file changed, 2 deletions(-)
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diff --git a/procfs/procfs.py b/procfs/procfs.py
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index 4ff7e9804bc9..2d0e2b043797 100755
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--- a/procfs/procfs.py
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+++ b/procfs/procfs.py
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@@ -405,8 +405,6 @@ class interrupts:
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return dict
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def parse_affinity(self, irq):
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- if os.getuid() != 0:
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- return
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try:
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f = file("/proc/irq/%s/smp_affinity" % irq)
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line = f.readline()
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--
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1.8.3.1
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