+}
+
+__DEFINE_LXSYSCALL(pid_t, getpid)
+{
+ return __current->pid;
+}
+
+__DEFINE_LXSYSCALL(pid_t, getppid)
+{
+ return __current->parent->pid;
+}
+
+__DEFINE_LXSYSCALL(pid_t, getpgid)
+{
+ return __current->pgid;
+}
+
+__DEFINE_LXSYSCALL2(int, setpgid, pid_t, pid, pid_t, pgid)
+{
+ struct proc_info* proc = pid ? get_process(pid) : __current;
+
+ if (!proc) {
+ syscall_result(EINVAL);
+ return -1;
+ }
+
+ pgid = pgid ? pgid : proc->pid;
+
+ struct proc_info* gruppenfuhrer = get_process(pgid);
+
+ if (!gruppenfuhrer || proc->pgid == gruppenfuhrer->pid) {
+ syscall_result(EINVAL);
+ return -1;
+ }
+
+ llist_delete(&proc->grp_member);
+ llist_append(&gruppenfuhrer->grp_member, &proc->grp_member);
+
+ proc->pgid = pgid;
+ return 0;
+}
+
+static inline bool
+__can_change_real_id(const struct user_scope* procu, caps_t id_cap) {
+ if (uscope_with_capability(procu, id_cap)) {
+ return true;
+ }
+
+ if (check_current_acl(0, 0) != ACL_NO_MATCH) {
+ return true;
+ }
+
+ return false;
+}
+
+__DEFINE_LXSYSCALL1(int, setuid, uid_t, uid)
+{
+ struct user_scope* procu;
+
+ procu = current_user_scope();
+
+ if (__can_change_real_id(procu, CAP_SETUID))
+ {
+ procu->ruid = uid;
+ }
+
+ __current->suid = uid;
+ __current->euid = uid;
+
+ return 0;
+}
+
+__DEFINE_LXSYSCALL1(int, setgid, gid_t, gid)
+{
+ struct user_scope* procu;
+
+ procu = current_user_scope();
+
+ if (__can_change_real_id(procu, CAP_SETGID))
+ {
+ procu->rgid = gid;
+ }
+
+ __current->sgid = gid;
+ __current->egid = gid;
+
+ return 0;
+}
+
+__DEFINE_LXSYSCALL1(int, seteuid, uid_t, euid)
+{
+ __current->euid = euid;
+
+ return 0;
+}
+
+__DEFINE_LXSYSCALL1(int, setegid, gid_t, egid)
+{
+ __current->egid = egid;
+
+ return 0;
+}
+
+__DEFINE_LXSYSCALL2(int, setgroups, const gid_t*, gids, unsigned int, len)
+{
+ struct user_scope* procu;
+
+ procu = current_user_scope();
+
+ if (check_current_acl(0, 0) == ACL_NO_MATCH) {
+ return EPERM;
+ }
+
+ if (uscope_with_capability(procu, CAP_SETGID)) {
+ return EPERM;
+ }
+
+ return uscope_setgroups(procu, gids, len);
+}
+
+
+__DEFINE_LXSYSCALL(uid_t, getuid)
+{
+ return current_user_scope()->ruid;
+}
+
+__DEFINE_LXSYSCALL(gid_t, getgid)
+{
+ return current_user_scope()->rgid;
+}
+
+__DEFINE_LXSYSCALL(uid_t, geteuid)
+{
+ return __current->euid;
+}
+
+__DEFINE_LXSYSCALL(gid_t, getegid)
+{
+ return __current->egid;
+}
+
+__DEFINE_LXSYSCALL2(int, getgroups, gid_t*, out_buf, unsigned int, len)
+{
+ struct user_scope* procu;
+ struct ugroup_obj* gobj;
+
+ procu = current_user_scope();
+ gobj = user_groups(procu);
+
+ assert(gobj);
+ len = MIN(gobj->maxcap, len);
+
+ unsigned i = 0;
+ for (; i < len && gobj->list[i] != grp_list_end; i++)
+ {
+ out_buf[i] = gobj->list[i];
+ }
+
+ return i + 1;
git://scm.lunaixsky.com / lunaix-os.git / commitdiff