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#!/bin/bash
#-----------------------------------------------------
# This scripts allows to check the ids (user and/or group)
# of running services.
# It doesn't check that the service runs because this is
# the object of other tests.
# If a process doesn't run it emits an unknown status for
# the service, but not a fail.
# When there are multiple instance of a service, it checks
# that at least one instance matches expectation.
# Author: jose.bollo@iot.bzh
#-----------------------------------------------------
# out of LAVA run
if ! type lava-test-case 2>/dev/null; then
lava-test-case() { echo "lava-test-case $*"; }
fi
if ! type lava-test-set 2>/dev/null; then
lava-test-set() { echo "lava-test-set $*"; }
fi
# extraction of numeric ids for user and group
get-id() {
local id="$1" file="$2"
if grep -q "^${id}:" "$file"; then
grep "^${id}:" "$file" | cut -d: -f3
else
echo -n "$id"
fi
}
get-uid() { get-id "$1" /etc/passwd; }
get-gid() { get-id "$1" /etc/group; }
# extraction of numeric effective ids of processes
get-p-id() {
local pid="$1" field="$2"
grep "$field" "/proc/$pid/status" | cut -f3
}
get-p-uid() { get-p-id "$1" "Uid:"; }
get-p-gid() { get-p-id "$1" "Gid:"; }
# check the process status
check-p-ids() {
local pid="$1" uid="$2" gid="$3"
local u=$(get-p-uid "$pid")
local g=$(get-p-gid "$pid")
[[ -z "$uid" || "$uid" -eq "$u" ]] && [[ -z "$gid" || "$gid" -eq "$g" ]]
}
check-user-group() {
local service="$1" user="$2" group="$3"
local name="${service}-${user}-${group}"
local pid uid=$(get-uid "$user") gid=$(get-gid "$group")
if ! pgrep -c "^$service\$" > /dev/null 2>&1; then
lava-test-case "$name" --result unknown
return 0
fi
for pid in $(pgrep "^$service\$"); do
if check-p-ids "$pid" "$uid" "$gid"; then
lava-test-case "$name" --result pass
return 0
fi
done
lava-test-case "$name" --result fail
return 1
}
check-user() { check-user-group "$1" "$2" ""; }
check-group() { check-user-group "$1" "" "$2"; }
# the test effective
lava-test-set start check-services-user-group
check-user-group weston display display
lava-test-set stop check-services-user-group
exit 0
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