From 70644186c1493e3339d4ee52588affe979a92aee Mon Sep 17 00:00:00 2001
From: Benjamin Lamowski <benjamin.lamowski@genode-labs.com>
Date: Mon, 24 Apr 2023 11:21:04 +0200
Subject: [PATCH] libc: add dummy symbols for the Rust std library

Add dummies for sigaltstack(3) and FreeBSD's _umtx_op(2).

Ref #4824
---
 repos/libports/lib/symbols/libc        | 2 ++
 repos/libports/src/lib/libc/dummies.cc | 2 ++
 2 files changed, 4 insertions(+)

diff --git a/repos/libports/lib/symbols/libc b/repos/libports/lib/symbols/libc
index e3de45d2d5..91284da9b0 100644
--- a/repos/libports/lib/symbols/libc
+++ b/repos/libports/lib/symbols/libc
@@ -43,6 +43,7 @@ _Exit T
 _exit T
 _getlong T
 _getshort T
+_umtx_op T
 a64l T
 abort T
 abs T
@@ -703,6 +704,7 @@ setvbuf T
 shutdown T
 sigaction W
 sigaddset T
+sigaltstack T
 sigblock T
 sigdelset T
 sigemptyset T
diff --git a/repos/libports/src/lib/libc/dummies.cc b/repos/libports/src/lib/libc/dummies.cc
index b01d95f717..b1ad23c7ce 100644
--- a/repos/libports/src/lib/libc/dummies.cc
+++ b/repos/libports/src/lib/libc/dummies.cc
@@ -130,6 +130,7 @@ DUMMY(int   , -1, sched_setscheduler, (pid_t, int, const sched_param *))
 DUMMY(int   , -1, sched_yield, (void))
 DUMMY(int   , -1, __semctl, (void))
 DUMMY_SILENT(sig_t, SIG_ERR, signal, (int, sig_t));
+DUMMY_SILENT(int   , -1, sigaltstack, (const stack_t *, stack_t *))
 DUMMY(int   , -1, setegid, (uid_t))
 DUMMY(int   , -1, seteuid, (uid_t))
 DUMMY(int   , -1, setgid, (gid_t))
@@ -147,6 +148,7 @@ DUMMY_SILENT(mode_t,  0, umask, (mode_t))
 DUMMY(int   ,  0, utimes, (const char *, const timeval *))
 DUMMY(int, -1, semget, (key_t, int, int))
 DUMMY(int, -1, semop, (key_t, int, int))
+DUMMY(int   , -1, _umtx_op, (void *, int , u_long, void *, void *))
 __SYS_DUMMY(int,    -1, aio_suspend, (const struct aiocb * const[], int, const struct timespec *));
 __SYS_DUMMY(int   , -1, getfsstat, (struct statfs *, long, int))
 __SYS_DUMMY(int, -1, kevent, (int, const struct kevent*, int, struct kevent *, int, const struct timespec*));