[Pkg-samba-maint] Bug#1109388: cifs-utils: systemd --user cannot automount CIFS shares

[Jason Tokarz]

Package: cifs-utils
Version: 2:7.4-1
Severity: normal
X-Debbugs-Cc: jason.tokarz at gmail.com

Dear Maintainer,

-- System Information:
Debian Release: 13.0
 APT prefers testing-security
 APT policy: (500, 'testing-security'), (500, 'testing')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 6.11.10-amd64 (SMP w/24 CPU threads; PREEMPT)
Kernel taint flags: TAINT_WARN, TAINT_OOT_MODULE, TAINT_UNSIGNED_MODULE
Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8) (ignored:
LC_ALL set to en_GB.UTF-8), LANGUAGE=en.UTF-8
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages cifs-utils depends on:
ii  libc6             2.41-9
ii  libcap-ng0        0.8.5-4+b1
ii  libgssapi-krb5-2  1.21.3-5
ii  libkeyutils1      1.6.3-6
ii  libkrb5-3         1.21.3-5
ii  libpam0g          1.7.0-5
ii  libtalloc2        2:2.4.3+samba4.22.2+dfsg-1
ii  libwbclient0      2:4.22.2+dfsg-1
ii  python3           3.13.5-1

Versions of packages cifs-utils recommends
ii  keyutils  1.6.3-6

Versions of packages cifs-utils suggests:
ii  bash-completion  1:2.16.0-7
ii  smbclient        2:4.22.2+dfsg-1
pn  winbind          <none>

-- no debconf information

When attempting to setup a systemd user service to automount a CIFS
share, the mount fails with the error "%s: permission denied: no match for
%s found in %s\n"

The code is checking for an entry in /etc/fstab if the real-UID is > 0.
However, systemd automount should not need an entry in /etc/fstab.
Having the setuid bit set does not help as it calls 'getuid()' and not
'geteuid()'.
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