diff options
| -rw-r--r-- | toys/lsb/su.c | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/toys/lsb/su.c b/toys/lsb/su.c index 616541b9..612daef1 100644 --- a/toys/lsb/su.c +++ b/toys/lsb/su.c @@ -54,11 +54,13 @@ void su_main() else name = "root"; if (!(shp = getspnam(name))) perror_exit("no '%s'", name); - if (*shp->sp_pwdp != '$') goto deny; - if (read_password(toybuf, sizeof(toybuf), "Password: ")) goto deny; - passhash = crypt(toybuf, shp->sp_pwdp); - memset(toybuf, 0, sizeof(toybuf)); - if (!passhash || strcmp(passhash, shp->sp_pwdp)) goto deny; + if (getuid()) { + if (*shp->sp_pwdp != '$') goto deny; + if (read_password(toybuf, sizeof(toybuf), "Password: ")) goto deny; + passhash = crypt(toybuf, shp->sp_pwdp); + memset(toybuf, 0, sizeof(toybuf)); + if (!passhash || strcmp(passhash, shp->sp_pwdp)) goto deny; + } up = xgetpwnam(name); xsetuser(up); |