[libvirt] [libvirt-sandbox PATCH] Allow to switch to a specific user id
Useful if you want to run programs as the same user than outside the
sandbox.
---
bin/virt-sandbox.c | 26 ++++++++++++++++++++++++++
1 file changed, 26 insertions(+)
diff --git a/bin/virt-sandbox.c b/bin/virt-sandbox.c
index 4c400d5..9495e85 100644
--- a/bin/virt-sandbox.c
+++ b/bin/virt-sandbox.c
@@ -24,6 +24,8 @@
#include <libvirt-sandbox/libvirt-sandbox.h>
#include <glib/gi18n.h>
+#include <sys/types.h>
+#include <pwd.h>
static gboolean do_close(GVirSandboxConsole *con G_GNUC_UNUSED,
gboolean error G_GNUC_UNUSED,
@@ -92,6 +94,7 @@ int main(int argc, char **argv) {
gchar *kernver = NULL;
gchar *kernpath = NULL;
gchar *kmodpath = NULL;
+ gchar *switchto = NULL;
gboolean verbose = FALSE;
gboolean debug = FALSE;
gboolean shell = FALSE;
@@ -126,6 +129,8 @@ int main(int argc, char **argv) {
N_("security properties"), "PATH", },
{ "privileged", 'p', 0, G_OPTION_ARG_NONE, &privileged,
N_("run the command privileged"), NULL },
+ { "switchto", 'S', 0, G_OPTION_ARG_STRING, &switchto,
+ N_("swith to the given user"), "USER" },
{ "shell", 'l', 0, G_OPTION_ARG_NONE, &shell,
N_("start a shell"), NULL, },
{ "kernver", 0, 0, G_OPTION_ARG_STRING, &kernver,
@@ -139,6 +144,7 @@ int main(int argc, char **argv) {
{ NULL, 0, 0, G_OPTION_ARG_NONE, NULL, NULL, NULL }
};
const char *help_msg = N_("Run 'virt-sandbox --help' to see a full list
of available command line options");
+ struct passwd *pw;
setlocale(LC_ALL, "");
bindtextdomain(PACKAGE, LOCALEDIR);
@@ -198,10 +204,25 @@ int main(int argc, char **argv) {
if (kmodpath)
gvir_sandbox_config_set_kmodpath(cfg, kmodpath);
+ if (privileged && switchto) {
+ g_printerr(_("'switchto' and 'privileged' are incompatible
options\n"));
+ goto cleanup;
+ }
+
if (privileged) {
gvir_sandbox_config_set_userid(cfg, 0);
gvir_sandbox_config_set_groupid(cfg, 0);
gvir_sandbox_config_set_username(cfg, "root");
+ } else if (switchto) {
+ pw = getpwnam(switchto);
+ if (!pw) {
+ g_printerr(_("Failed to resolve user %s\n"), switchto);
+ goto cleanup;
+ }
+ gvir_sandbox_config_set_userid(cfg, pw->pw_uid);
+ gvir_sandbox_config_set_groupid(cfg, pw->pw_gid);
+ gvir_sandbox_config_set_username(cfg, pw->pw_name);
+ gvir_sandbox_config_set_homedir(cfg, pw->pw_dir);
}
if (envs &&
@@ -541,6 +562,11 @@ to this path to locate the modules.
Retain root privileges inside the sandbox, rather than dropping privileges
to match the current user identity.
+=item B<-S USER>, B<--switchto=USER>
+
+Swith to the given user inside the sandbox and setup $HOME
+accordingly.
+
=item B<-l>, B<--shell>
Launch an interactive shell on a secondary console device
--
2.8.0.rc3