Re: [libvirt PATCH 1/2] build: convert the run script to use Python

This fits with the goal of eliminating non-Python scripting languages, and makes forthcoming changes far easier. Signed-off-by: Daniel P. Berrangé <berrange(a)redhat.com&gt; --- run.in | 45 ++++++++++++++++++++++++++------------------- 1 file changed, 26 insertions(+), 19 deletions(-) diff --git a/run.in b/run.in index 6ddf5fc58f..99c67c586a 100644 --- a/run.in +++ b/run.in @@ -1,6 +1,6 @@ -#!/bin/sh +#!/usr/bin/env python3 # libvirt 'run' programs locally script -# Copyright (C) 2012-2013 Red Hat, Inc. +# Copyright (C) 2012-2021 Red Hat, Inc. # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public @@ -40,35 +40,42 @@ # #---------------------------------------------------------------------- +import os +import os.path +import random +import sys + # Function to intelligently prepend a path to an environment variable. # See https://stackoverflow.com/a/9631350 -prepend() -{ - eval $1="$2\${$1:+:\$$1}" -} +def prepend(env, varname, extradir): + if varname in os.environ: + env[varname] = extradir + ":" + env[varname] + else: + env[varname] = extradir + +here = "@abs_builddir@" -# Find this script. -b=@abs_builddir@ +if len(sys.argv) < 2: + print("syntax: %s BINARY [ARGS...]" % sys.argv[0], file=sys.stderr) + sys.exit(1) -prepend LD_LIBRARY_PATH "$b/src" -export LD_LIBRARY_PATH +prog = sys.argv[1] +args = sys.argv[1:] +env = os.environ -prepend PKG_CONFIG_PATH "$b/src" -export PKG_CONFIG_PATH -prepend PATH "$b/tools" -export PATH +prepend(env, "LD_LIBRARY_PATH", os.path.join(here, "src")) +prepend(env, "PKG_CONFIG_PATH", os.path.join(here, "src")) +prepend(env, "PATH", os.path.join(here, "tools")) # Ensure that any 3rd party apps using libvirt.so from the build tree get # files resolved to the build/source tree too. Typically useful for language # bindings running tests against non-installed libvirt. -LIBVIRT_DIR_OVERRIDE=1 -export LIBVIRT_DIR_OVERRIDE +env["LIBVIRT_DIR_OVERRIDE"] = "1" # This is a cheap way to find some use-after-free and uninitialized # read problems when using glibc. -random_val="$(awk 'BEGIN{srand(); print 1+int(255*rand())}' < /dev/null)" -export MALLOC_PERTURB_=$random_val +env["MALLOC_PERTURB_"] = "%d" % random.randint(1, 255) # Run the program. -exec "$@" +os.execve(prog, args, env)

-- 2.30.2