diff options
| -rw-r--r-- | paludis/environments/paludis/paludis_config.cc | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/paludis/environments/paludis/paludis_config.cc b/paludis/environments/paludis/paludis_config.cc index 4013ee644..c2b9c43d1 100644 --- a/paludis/environments/paludis/paludis_config.cc +++ b/paludis/environments/paludis/paludis_config.cc @@ -64,6 +64,7 @@ #include <ctype.h> #include <sys/types.h> +#include <grp.h> #include <pwd.h> #include "config.h" @@ -503,6 +504,30 @@ PaludisConfig::PaludisConfig(PaludisEnvironment * const e, const std::string & s _imp->reduced_gid = std::make_shared<gid_t>(getgid()); } + FSPath tty_0("/dev/pts/0"); + bool tty_ok(true); + if (tty_0.stat().exists()) + { + FSStat tty_0_stat(tty_0); + ::gid_t gids[100]; + + int g(100); + if ((g = ::getgrouplist(reduced_username().c_str(), reduced_gid(), gids, &g)) != -1) + tty_ok = (gids + g != std::find(gids, gids + g, tty_0_stat.group())); + else + tty_ok = false; + } + else + tty_ok = false; + + if (! tty_ok) + { + Log::get_instance()->message("paludis_environment.userpriv.tty", ll_warning, lc_context) + << "Cannot verify that we have sufficient permissions to use PTYs properly " + "using userpriv. Strange breakages may occur. You should ensure that the '" + << reduced_username() << "' user is in the group to which /dev/pts/0 belongs"; + } + if (dist->mandatory_userpriv() && ((0 == *_imp->reduced_uid || 0 == *_imp->reduced_gid))) { std::string s; |