On Wed, Aug 25, 2010 at 11:03:42AM +0200, Soren Hansen wrote:
> uml_dir overrides user-mode-linux's default of ~/.uml. This is needed
> for a couple of different reasons:
>
> libvirt expects this to default to virGetUserDirectory(geteuid()) +
> '/.uml'. However, user-mode-linux actually uses the HOME environment
> variable to determine where to look for the uml sockets, but if running
> libvirtd under sudo (which I routinely do during development), $HOME is
> pointing at my user's homedir, while my euid is 0, so libvirt looks in
> /root.
>
> Also (and this was my actual motivation for this patch), if HOME isn't
> set at all, user-mode-linux utterly fails. Looking at the code, it seems
> it's meant to emit a warning, but alas, it doesn't for some reason.
> If running libvirtd from upstart, HOME is not set, so any system using
> upstart will need this change.
>
> Signed-off-by: Soren Hansen <soren@xxxxxxxxxxx>
> ---
> src/uml/uml_conf.c | 4 ++--
> 1 files changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/src/uml/uml_conf.c b/src/uml/uml_conf.c
> index 65b06c5..4906192 100644
> --- a/src/uml/uml_conf.c
> +++ b/src/uml/uml_conf.c
> @@ -409,7 +409,7 @@ static char *umlNextArg(char *args)
> * for a given virtual machine.
> */
> int umlBuildCommandLine(virConnectPtr conn,
> - struct uml_driver *driver ATTRIBUTE_UNUSED,
> + struct uml_driver *driver,
> virDomainObjPtr vm,
> fd_set *keepfd,
> const char ***retargv,
> @@ -499,7 +499,6 @@ int umlBuildCommandLine(virConnectPtr conn,
> ADD_ENV_COPY("LD_PRELOAD");
> ADD_ENV_COPY("LD_LIBRARY_PATH");
> ADD_ENV_COPY("PATH");
> - ADD_ENV_COPY("HOME");
> ADD_ENV_COPY("USER");
> ADD_ENV_COPY("LOGNAME");
> ADD_ENV_COPY("TMPDIR");
> @@ -508,6 +507,7 @@ int umlBuildCommandLine(virConnectPtr conn,
> //ADD_ARG_PAIR("con0", "fd:0,fd:1");
> ADD_ARG_PAIR("mem", memory);
> ADD_ARG_PAIR("umid", vm->def->name);
> + ADD_ARG_PAIR("uml_dir", driver->monitorDir);
>
> if (vm->def->os.root)
> ADD_ARG_PAIR("root", vm->def->os.root);
ACK
Regards,
Daniel
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