[Libguestfs] [PATCH] Add -u and -g options to febootstrap-supermin-helper

Bash automatically resets euid to uid when it executes. This means that the effective user id of a program at the point it calls febootstrap-supermin-helper will be lost if any part of execution chain involved bash. This in turn can result in: * the generation of an incorrect checksum, which contains the uid. * the generation of supermin files with a mixture of owners The -u and -g options allow the caller to pass in an explicit user and group to run as. febootstrap-supermin-helper will set(u|g)id as appropriate. --- helper/febootstrap-supermin-helper.pod | 13 ++++ helper/main.c | 116 +++++++++++++++++++++++++++++++- lib/.gitignore | 10 +++ m4/.gitignore | 4 + m4/gnulib-cache.m4 | 3 +- 5 files changed, 142 insertions(+), 4 deletions(-)