[libvirt] [PATCH 00/17] Refactor virt-login-shell and nss module

As previously discussed, it is desirable to move libvirt to a model where we abort-on-OOM, possibly making use of glib2. This would be good for libvirt in general, but it is bad for a couple of libvirt addons. The virt-login-shell setuid program would be ok with abort-on-OOM, but absolutely can never link to glib2 in a setuid setup. The NSS module cannot tolerate abort-on-OOM as it is dyn loaded in to every process on the host, some of which wish to be robust on OOM. It is not practical to restrict abort-on-OOM to only the pieces of code not used by NSS, nor is it practical to conditionally build with & without abort-on-OOM. The solution to both these problems is to refactor the code such that it does not use any common libvirt code. Only direct libc APIs are permitted, and for the NSS module the yajl library. For virt-login-shell this refactoring actually makes the entire solution more pleasant to deal with, so is a win regardless. For the NSS module, the code is a little less attractive by using the lower level libc APIs. The need to use the yajl APIs directly also makes parsing MACs/leases much more verbose. This is still tolerable though, given the benefit of switching the other libvirt code to abort-on-OOM. Daniel P. Berrangé (17): tools: fix crash in virt-login-shell if config doesn't exist tools: fix double error reporting in virt-login-shell tools: rename source for virt-login-shell tools: split virt-login-shell into two binaries build: drop libvirt setuid library build util: get rid of virIsSUID method util: simplify virCommand APIs for env passthrough. util: get rid of virGetEnv{Allow,Block}SUID functions nss: remove use for virDir helper APIs nss: remove use for virString helper APIs nss: remove use for virFile helper APIs nss: refactor code for processing mac addresses nss: custom parser for loading .macs file nss: custom parser for loading .leases file nss: directly use getnameinfo/getaddrinfo nss: remove last usages of libvirt headers nss: only link to yajl library and nothing else .gitignore | 1 + cfg.mk | 25 +- config-post.h | 54 ---- configure.ac | 3 - libvirt.spec.in | 1 + src/Makefile.am | 174 ------------- src/libvirt-admin.c | 2 +- src/libvirt.c | 47 ++-- src/libvirt_private.syms | 6 +- src/lxc/lxc_process.c | 2 +- src/network/leaseshelper.c | 14 +- src/qemu/qemu_command.c | 8 +- src/qemu/qemu_firmware.c | 2 +- src/remote/remote_driver.c | 25 +- src/rpc/virnetlibsshsession.c | 2 +- src/rpc/virnetsocket.c | 16 +- src/rpc/virnettlscontext.c | 2 +- src/util/virauth.c | 2 +- src/util/vircommand.c | 48 +--- src/util/vircommand.h | 8 +- src/util/virfile.c | 7 +- src/util/virlease.c | 4 +- src/util/virlog.c | 15 +- src/util/virsystemd.c | 8 +- src/util/virutil.c | 48 +--- src/util/virutil.h | 4 - src/vbox/vbox_XPCOMCGlue.c | 2 +- src/vbox/vbox_common.c | 2 +- tests/commandtest.c | 8 +- tools/Makefile.am | 43 ++-- tools/nss/libvirt_nss.c | 343 ++++++++----------------- tools/nss/libvirt_nss.h | 24 ++ tools/nss/libvirt_nss_leases.c | 429 +++++++++++++++++++++++++++++++ tools/nss/libvirt_nss_leases.h | 40 +++ tools/nss/libvirt_nss_macs.c | 287 +++++++++++++++++++++ tools/nss/libvirt_nss_macs.h | 29 +++ tools/virsh.c | 2 +- tools/virt-login-shell-helper.c | 439 ++++++++++++++++++++++++++++++++ tools/virt-login-shell.c | 421 ++++-------------------------- tools/vsh.c | 12 +- 40 files changed, 1521 insertions(+), 1088 deletions(-) create mode 100644 tools/nss/libvirt_nss_leases.c create mode 100644 tools/nss/libvirt_nss_leases.h create mode 100644 tools/nss/libvirt_nss_macs.c create mode 100644 tools/nss/libvirt_nss_macs.h create mode 100644 tools/virt-login-shell-helper.c -- 2.21.0