Use setresuid() and setreuid() for PERM_RUNAS when appropriate instead

of seteuid() which may not exist.

diff --git a/set_perms.c b/set_perms.c
index 590e01822dd7dd043ae40ab9037872e9ba96365b..8d9e47b00185187913e15aacf80f02e4a17adb9c 100644 (file)
--- a/set_perms.c
+++ b/set_perms.c
@@ -197,7 +197,7 @@ set_perms_suid(perm)
                                break;
                                
        case PERM_RUNAS:
-                               if (seteuid(runas_pw->pw_uid))
+                               if (setresuid(-1, runas_pw->pw_uid, -1))
                                    fatal("unable to change to runas uid", 1);
                                break;
 
@@ -274,7 +274,7 @@ set_perms_suid(perm)
                                break;
                                
        case PERM_RUNAS:
-                               if (seteuid(runas_pw->pw_uid))
+                               if (setreuid(-1, runas_pw->pw_uid))
                                    fatal("unable to change to runas uid", 1);
                                break;