initial commit
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177
image-entry.sh
Executable file
177
image-entry.sh
Executable file
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#!/bin/sh
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set -f
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[ -n "${IEP_TRACE}" ] || IEP_TRACE=0
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[ "${IEP_TRACE}" = 1 ] || IEP_TRACE=0
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[ "${IEP_TRACE}" = 0 ] || echo "# trace: $(date +'%Y-%m-%d %H:%M:%S.%03N %z'): start" >&2
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iep_prepare_env() {
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## Angie: unset core variables
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unset ANGIE ANGIE_BPF_MAPS
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}
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iep_preserve_env() {
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## preserve LD_PRELOAD
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unset __IEP_LD_PRELOAD
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__IEP_LD_PRELOAD="${LD_PRELOAD:-}"
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unset LD_PRELOAD
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## glibc: preserve GLIBC_TUNABLES
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unset __IEP_GLIBC_TUNABLES
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__IEP_GLIBC_TUNABLES="${GLIBC_TUNABLES:-}"
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unset GLIBC_TUNABLES
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## glibc: preserve MALLOC_ARENA_MAX
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unset __IEP_MALLOC_ARENA_MAX
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__IEP_MALLOC_ARENA_MAX="${MALLOC_ARENA_MAX:-4}"
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export MALLOC_ARENA_MAX=2
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## jemalloc: preserve MALLOC_CONF
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unset __IEP_MALLOC_CONF
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__IEP_MALLOC_CONF="${MALLOC_CONF:-}"
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unset MALLOC_CONF
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}
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iep_restore_env() {
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unset IEP_DEBUG IEP_VERBOSE IEP_TRACE IEP_ROOT IEP_RETAIN_ENV
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## restore LD_PRELOAD
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if [ -n "${__IEP_LD_PRELOAD:-}" ] ; then
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export LD_PRELOAD="${__IEP_LD_PRELOAD}"
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fi
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unset __IEP_LD_PRELOAD
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## glibc: restore GLIBC_TUNABLES
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if [ -n "${__IEP_GLIBC_TUNABLES:-}" ] ; then
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export GLIBC_TUNABLES="${__IEP_GLIBC_TUNABLES}"
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fi
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unset __IEP_GLIBC_TUNABLES
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## glibc: restore MALLOC_ARENA_MAX
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if [ -n "${__IEP_MALLOC_ARENA_MAX:-}" ] ; then
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export MALLOC_ARENA_MAX="${__IEP_MALLOC_ARENA_MAX}"
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fi
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unset __IEP_MALLOC_ARENA_MAX
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## jemalloc: restore MALLOC_CONF
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if [ -n "${__IEP_MALLOC_CONF:-}" ] ; then
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export MALLOC_CONF="${__IEP_MALLOC_CONF}"
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fi
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unset __IEP_MALLOC_CONF
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}
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iep_flush_volume() {
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## try to flush volume twice (heisenbug)
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unset i ; for i in 1 2 ; do
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find /run/ngx/ -mindepth 1 -maxdepth 1 -exec rm -rf {} + || :
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sleep 0.1
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done ; unset i
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if find /run/ngx/ -mindepth 1 -maxdepth 1 -printf . -quit | grep -Fq . ; then
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exec 1>&2
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echo '========================================================================'
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echo "unable to fully flush /run/ngx/:"
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find /run/ngx/ -mindepth 1 -maxdepth 1 -exec ls -ld {} +
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echo '========================================================================'
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echo "injecting delay for 15 seconds"
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echo '========================================================================'
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sleep 15
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exit 1
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fi
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}
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iep_prepare_env
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iep_preserve_env
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iep_flush_volume
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## early setup TMPDIR (affects "mktemp")
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export TMPDIR=/run/ngx/tmp
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install -d -m 03777 "${TMPDIR}"
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install -d /run/ngx/iep
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overlaydirs --merge /run/ngx/iep /image-entry.dist /image-entry /image-entry.local
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unset __IEP_SRC ; __IEP_SRC="${0##*/}"
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. /run/ngx/iep/00-common.envsh
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# IEP_TRACE=$(gobool_to_int "${IEP_TRACE:-0}" 0)
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IEP_DEBUG=$(gobool_to_int "${IEP_DEBUG:-0}" 0)
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IEP_VERBOSE=$(gobool_to_int "${IEP_VERBOSE:-${IEP_DEBUG}}" "${IEP_DEBUG}")
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export IEP_TRACE IEP_DEBUG IEP_VERBOSE
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IEP_INIT=$(gobool_to_int "${IEP_INIT:-0}" 0)
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## unexport IEP_INIT
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unset x ; x="${IEP_INIT}" ; unset IEP_INIT ; IEP_INIT="$x" ; unset x
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## run parts (if any)
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unset __IEP_SCRIPT
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while read -r __IEP_SCRIPT ; do
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[ -n "${__IEP_SCRIPT}" ] || continue
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[ -f "${__IEP_SCRIPT}" ] || continue
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case "${__IEP_SCRIPT}" in
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*.envsh )
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if ! [ -x "${__IEP_SCRIPT}" ] ; then
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log "NOT sourcing ${__IEP_SCRIPT} - not executable"
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continue
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fi
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if [ "${IEP_TRACE}" = 1 ] ; then
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echo "# trace: $(date +'%Y-%m-%d %H:%M:%S.%03N %z'): source ${__IEP_SCRIPT}" >&2
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else
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log "sourcing ${__IEP_SCRIPT}"
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fi
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__IEP_SRC="${__IEP_SCRIPT}"
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. "${__IEP_SCRIPT}"
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__IEP_SRC="${0##*/}"
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;;
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* )
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if ! [ -x "${__IEP_SCRIPT}" ] ; then
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log "NOT running ${__IEP_SCRIPT} - not executable"
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continue
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fi
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if [ "${IEP_TRACE}" = 1 ] ; then
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echo "# trace: $(date +'%Y-%m-%d %H:%M:%S.%03N %z'): run ${__IEP_SCRIPT}" >&2
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else
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log "running ${__IEP_SCRIPT}"
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fi
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"${__IEP_SCRIPT}"
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;;
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esac
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done <<EOF
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$(overlaydirs --list /run/ngx/iep)
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EOF
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unset __IEP_SCRIPT
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## RFC: not needed anymore
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# rm -rf /run/ngx/iep
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[ "${IEP_TRACE}" = 0 ] || echo "# trace: $(date +'%Y-%m-%d %H:%M:%S.%03N %z'): end" >&2
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if [ "${IEP_DEBUG}" = 1 ] ; then
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log_always "ready to run application: $*"
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else
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log_always "ready to run application"
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fi
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echo >&2
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iep_restore_env
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## variables that are not so easily unsettable
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unset IEP_ENV_CMD
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for i in '_' 'SHLVL' ; do
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IEP_ENV_CMD="${IEP_ENV_CMD:-}${IEP_ENV_CMD:+ }-u $i"
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done
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## unexport IEP_INIT
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unset x ; x="${IEP_INIT}" ; unset IEP_INIT ; IEP_INIT="$x" ; unset x
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if [ "${IEP_INIT}" = 1 ] ; then
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exec \
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${IEP_ENV_CMD:+ env ${IEP_ENV_CMD} } \
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catatonit \
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"$@"
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else
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exec \
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${IEP_ENV_CMD:+ env ${IEP_ENV_CMD} } \
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"$@"
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fi
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