matthias/docker-inotify-command
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Generate the user and group names

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Also check if the the user already exists.
This commit is contained in:
David Coppit
2015-06-26 00:19:25 -04:00
parent 44f8af4a50
commit 3888123dcd
2 changed files with 26 additions and 22 deletions
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41
runas.sh
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@@ -1,7 +1,5 @@
#!/bin/bash
GROUP=docker
#-----------------------------------------------------------------------------------------------------------------------
function ts {
@@ -11,28 +9,37 @@ function ts {
#-----------------------------------------------------------------------------------------------------------------------
function process_args {
local USER_UID_GID=$1
# These are intended to be global
USER_ID=$1
GROUP_ID=$2
if [[ ! "$USER_UID_GID" =~ ^[A-Za-z0-9._][-A-Za-z0-9._]*:[0-9]{1,}:[0-9]{1,}$ ]]
if [[ ! "$USER_ID" =~ ^[0-9]{1,}$ ]]
then
echo "USER_UID_GID value $USER_UID_GID is not valid. It should be of the form <user>:<uid>:<gid>"
echo "User ID value $USER_ID is not valid. It must be a whole number"
exit 1
fi
# These are meant to be global.
USER=${USER_UID_GID%:*:*}
USER_ID=${USER_UID_GID#*:}
USER_ID=${USER_ID%:*}
GROUP_ID=${USER_UID_GID#*:*:}
if [[ ! "$GROUP_ID" =~ ^[0-9]{1,}$ ]]
then
echo "Group ID value $GROUP_ID is not valid. It must be a whole number"
exit 1
fi
}
#-----------------------------------------------------------------------------------------------------------------------
function create_user {
local USER=$1
local USER_ID=$2
local GROUP=$3
local GROUP_ID=$4
local USER_ID=$1
local GROUP_ID=$2
USER="user_${USER_ID}_$GROUP_ID"
GROUP="group_${USER_ID}_$GROUP_ID"
if id -u $USER >/dev/null 2>&1
then
echo "$(ts) User \"$USER\" already exists. Skipping creation of user and group..."
return
fi
echo "$(ts) Creating user \"$USER\" (ID $USER_ID) and group \"$GROUP\" (ID $GROUP_ID) to run the command..."
@@ -48,10 +55,10 @@ function create_user {
process_args "$@"
# Shift off the arg so that we can exec $@ below
shift
# Shift off the args so that we can exec $@ below
shift; shift
create_user $USER $USER_ID $GROUP $GROUP_ID
create_user $USER_ID $GROUP_ID
echo "$(ts) Running command as user \"$USER\"..."
exec /sbin/setuser $USER "$@"