diff options
| -rw-r--r-- | src/platform/tests/test-common.c | 42 |
1 files changed, 41 insertions, 1 deletions
diff --git a/src/platform/tests/test-common.c b/src/platform/tests/test-common.c index 81f7cbdc73..a449c3ae43 100644 --- a/src/platform/tests/test-common.c +++ b/src/platform/tests/test-common.c @@ -278,6 +278,46 @@ run_command (const char *format, ...) NMTST_DEFINE(); +static gboolean +is_root () +{ + FILE *f; + uid_t uid = geteuid (); + gid_t gid = getegid (); + + /* Already a root? */ + if (gid == 0 && uid == 0) + return TRUE; + + /* Become a root in new user NS. */ + if (unshare (CLONE_NEWUSER) != 0) + return FALSE; + + /* Since Linux 3.19 we have to disable setgroups() in order to map users. + * Just proceed if the file is not there. */ + f = fopen ("/proc/self/setgroups", "w"); + if (f) { + fprintf (f, "deny"); + fclose (f); + } + + /* Map current UID to root in NS to be created. */ + f = fopen ("/proc/self/uid_map", "w"); + if (!f) + return FALSE; + fprintf (f, "0 %d 1", uid); + fclose (f); + + /* Map current GID to root in NS to be created. */ + f = fopen ("/proc/self/gid_map", "w"); + if (!f) + return FALSE; + fprintf (f, "0 %d 1", gid); + fclose (f); + + return TRUE; +} + int main (int argc, char **argv) { @@ -286,7 +326,7 @@ main (int argc, char **argv) init_tests (&argc, &argv); - if (nmtst_platform_is_root_test () && getuid() != 0) { + if (nmtst_platform_is_root_test () && !is_root ()) { /* Try to exec as sudo, this function does not return, if a sudo-cmd is set. */ nmtst_reexec_sudo (); |