GNU bug report logs - #73134
coreutils: df: no file systems processed

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Felix Miata <mrmazda <at> earthlink.net>
To: bug-coreutils <at> gnu.org
Cc: Andreas Schwab <schwab <at> suse.de>, Thorsten Kukuk <kukuk <at> suse.com>,
 Bernhard Voelker <mail <at> bernhard-voelker.de>
Subject: coreutils: df: no file systems processed
Date: Sun, 8 Sep 2024 17:45:04 -0400

Systems experienced on:
openSUSE Tumbleweed 20240906 (coreutils-9.5-3.1; kernel 6.9.9, 6.6.49, 6.10.7)
Fedora 40 (kernel 6.9.12)
Debian Trixie/testing (kernel 6.9.12)
# inxi -CSM
System:
  Host: ab85m Kernel: 6.9.9-1-default arch: x86_64 bits: 64
  Console: pty pts/0 Distro: openSUSE Tumbleweed 20240906
Machine:
  Type: Desktop System: ASUS product: All Series v: N/A serial: N/A
  Mobo: ASUSTeK model: B85M-E v: Rev X.0x serial: <filter>
    UEFI: American Megatrends v: 3602 date: 04/04/2018
CPU:
  Info: dual core model: Intel Pentium G3220 bits: 64 type: MCP cache:
    L2: 512 KiB
# inxi -CMS
System:
  Host: ab560 Kernel: 6.9.12-200.fc40.x86_64 arch: x86_64 bits: 64
  Console: pty pts/0 Distro: Fedora Linux 40 (Forty)
Machine:
  Type: Desktop System: ASUS product: N/A v: N/A serial: N/A
  Mobo: ASUSTeK model: PRIME B560M-A v: Rev 1.xx serial:
   <filter> UEFI: American Megatrends v: 1601 date: 05/07/2022
CPU:
  Info: 6-core model: 11th Gen Intel Core i5-11400 bits: 64 type: MT MCP
    cache: L2: 3 MiB
# inxi -CMS
System:
  Host: ab250 Kernel: 6.9.12-amd64 arch: x86_64 bits: 64
  Console: pty pts/0 Distro: Debian GNU/Linux trixie/sid
Machine:
  Type: Desktop Mobo: ASUSTeK model: PRIME B250M-C v: Rev X.0x
    serial: <filter> UEFI: American Megatrends v: 1608 date: 10/21/2019
CPU:
  Info: quad core model: Intel Core i5-7500T bits: 64 type: MCP cache:
    L2: 1024 KiB

Expected behavior (as user, OK):
tst2000 <at> ab85m:~> ls -1 /sys/firmware/efi/efivars | wc
    103     103    5245
tst2000 <at> ab85m:~> df /sys/firmware/efi/efivars/
Filesystem     1K-blocks  Used Available Use% Mounted on
efivarfs             128   103        21  84% /sys/firmware/efi/efivars
tst2000 <at> ab85m:~>

Actual behavior (as root, not OK):
ab85m:~# ls -1 /sys/firmware/efi/efivars | wc
    103     103    5245
ab85m:~ # df /sys/firmware/efi/efivars/
df: no file systems processed
ab85m:~ #

Anything any ordinary user can do the superuser ought be able to do, especially
when involving OS, right???
-- 
Evolution as taught in public schools is, like religion,
	based on faith, not based on science.

 Team OS/2 ** Reg. Linux User #211409 ** a11y rocks!

Felix Miata

Message #8 received at 73134 <at> debbugs.gnu.org (full text, mbox):

From: Bernhard Voelker <mail <at> bernhard-voelker.de>
To: Felix Miata <mrmazda <at> earthlink.net>, 73134 <at> debbugs.gnu.org
Cc: Andreas Schwab <schwab <at> suse.de>, Thorsten Kukuk <kukuk <at> suse.com>
Subject: Re: bug#73134: coreutils: df: no file systems processed
Date: Mon, 9 Sep 2024 21:43:18 +0200

On 9/8/24 11:45 PM, Felix Miata wrote:
> ab85m:~ # df/sys/firmware/efi/efivars/
> df: no file systems processed
> ab85m:~ #
>
> Anything any ordinary user can do the superuser ought be able to do, especially
> when involving OS, right???

This is not necessarily true, because the kernel decides what 'root' is allowed to do.
I don't have such an efi mount point right here to test, but a different one for which
the kernel denies access for root:

  $ sudo strace -e newfstatat df -h /run/user/1000/gvfs
  newfstatat(AT_FDCWD, "/run/user/1000/gvfs", 0x55cd2e4c0e50, 0) = -1 EACCES (Permission denied)
  df: /run/user/1000/gvfs: Permission denied
  +++ exited with 1 +++

Have a nice day,
Berny

Message #11 received at 73134 <at> debbugs.gnu.org (full text, mbox):

From: Felix Miata <mrmazda <at> earthlink.net>
To: 73134 <at> debbugs.gnu.org
Subject: Re: bug#73134: coreutils: df: no file systems processed
Date: Mon, 9 Sep 2024 17:08:58 -0400

In openSUSE forum thread
<https://forums.opensuse.org/t/make-tumbleweed-hard-disk-bootable-and-grub-question/178030/265>
I reported I could not not produce the "df: no file systems processed"
response as root no matter the computer, OS or kernel (Debian, Fedora,
Mageia, Mint, MX, openSUSE, Ubuntu; always and only using EXT4) while
100% of thread responders reported inability to produce
"df: no file systems processed"
as root (most if not all of whom are BTRFS users).
-- 
Evolution as taught in public schools is, like religion,
	based on faith, not based on science.

 Team OS/2 ** Reg. Linux User #211409 ** a11y rocks!

Felix Miata

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