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wpa_supplicant: introduce unprivileged service #55802

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wpa_supplicant: introduce unprivileged service #55802

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1501e38
wpa_supplicant: run as unprivileged
dkwo Feb 24, 2025
b20ccbc
wpa_supplicant: drop patch
dkwo Mar 24, 2026
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7 changes: 7 additions & 0 deletions srcpkgs/wpa_supplicant/INSTALL
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Original file line number Diff line number Diff line change
@@ -0,0 +1,7 @@
# INSTALL
case "$ACTION" in
post)
chown -R root:_wpas /etc/wpa_supplicant/*
chmod 640 /etc/wpa_supplicant/*
;;
esac
10 changes: 10 additions & 0 deletions srcpkgs/wpa_supplicant/INSTALL.msg
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Original file line number Diff line number Diff line change
@@ -0,0 +1,10 @@
The runit service now uses Linux capabilities to run as non-root.
If you edited `wpa_supplicant.conf` files, you must set
`control_interface_group=_wpas`
there, so that the unprivileged daemon can function properly.
You must also
`chown -R _wpas:_wpas /run/wpa_supplicant`
before restarting the service with a mounted /run.
Finally, note that due to a bug in wpa_cli, you must run it as
`(umask 0 && wpa_cli)`
for the supplicant to be able to communicate with it.
2 changes: 1 addition & 1 deletion srcpkgs/wpa_supplicant/files/wpa_supplicant.conf
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Original file line number Diff line number Diff line change
@@ -1,7 +1,7 @@
# Default configuration file for wpa_supplicant.conf(5).

ctrl_interface=/run/wpa_supplicant
ctrl_interface_group=wheel
ctrl_interface_group=_wpas
eapol_version=1
ap_scan=1
fast_reauth=1
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13 changes: 8 additions & 5 deletions srcpkgs/wpa_supplicant/files/wpa_supplicant/run
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Original file line number Diff line number Diff line change
Expand Up @@ -7,10 +7,13 @@ else
OPTS="${AUTO}"
fi

# revert automigrate
chown -R root:root /etc/wpa_supplicant
! [ -d /run/wpa_supplicant ] && install -m 700 -g root -o root -d /run/wpa_supplicant
chown -R root:root /run/wpa_supplicant
! [ -d /run/wpa_supplicant ] && install -m 0750 -g _wpas -o _wpas -d /run/wpa_supplicant

_caps=-all,+net_admin,+net_raw

exec 2>&1
exec wpa_supplicant ${OPTS}
exec setpriv --reuid _wpas --regid _wpas --clear-groups \
--ambient-caps $_caps \
--inh-caps $_caps \
--bounding-set $_caps \
--no-new-privs -- wpa_supplicant ${OPTS}
3 changes: 2 additions & 1 deletion srcpkgs/wpa_supplicant/template
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Original file line number Diff line number Diff line change
@@ -1,7 +1,7 @@
# Template file for 'wpa_supplicant'
pkgname=wpa_supplicant
version=2.11
revision=3
revision=4
build_wrksrc="${pkgname}"
build_style=gnu-makefile
make_build_args="V=1 BINDIR=/usr/bin"
Expand All @@ -20,6 +20,7 @@ make_check=no # has no test suite
build_options="dbus readline"
build_options_default="dbus readline"
conf_files="/etc/${pkgname}/${pkgname}.conf"
system_accounts="_wpas"

pre_build() {
cp -f ${FILESDIR}/config .config
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