lib/posix-process/signal: Add stub for alarm()

Add stub for alarm() to get on par with libuksignal.

Signed-off-by: Michalis Pappas <michalis@unikraft.io>
Reviewed-by: Ioan-Teodor Teugea <ioan_teodor.teugea@stud.acs.upb.ro>
Reviewed-by: Sergiu Moga <sergiu@unikraft.io>
Reviewed-by: Andrei Tatar <andrei@unikraft.io>
Approved-by: Andrei Tatar <andrei@unikraft.io>
GitHub-Closes: #1248

diff --git a/lib/posix-process/Makefile.uk b/lib/posix-process/Makefile.uk
index d43f420ce5eea62d48a8f18d3ce37c4e7565cf20..8bcc645015bbaebf1cda3f6af3c3f5f047d10abd 100644 (file)
--- a/lib/posix-process/Makefile.uk
+++ b/lib/posix-process/Makefile.uk
@@ -22,6 +22,7 @@ LIBPOSIX_PROCESS_SRCS-$(CONFIG_LIBPOSIX_PROCESS_SIGNAL) += $(LIBPOSIX_PROCESS_BA
 LIBPOSIX_PROCESS_SRCS-$(CONFIG_LIBPOSIX_PROCESS_SIGNAL) += $(LIBPOSIX_PROCESS_BASE)/arch/$(CONFIG_UK_ARCH)/ucontext.c
 LIBPOSIX_PROCESS_SRCS-$(CONFIG_LIBPOSIX_PROCESS_SIGNAL) += $(LIBPOSIX_PROCESS_BASE)/arch/$(CONFIG_UK_ARCH)/signal.S|arch
 LIBPOSIX_PROCESS_SRCS-$(CONFIG_LIBPOSIX_PROCESS_SIGNAL) += $(LIBPOSIX_PROCESS_BASE)/signal/deliver.c
+LIBPOSIX_PROCESS_SRCS-y += $(LIBPOSIX_PROCESS_BASE)/signal/alarm.c
 LIBPOSIX_PROCESS_SRCS-y += $(LIBPOSIX_PROCESS_BASE)/signal/pause.c
 LIBPOSIX_PROCESS_SRCS-y += $(LIBPOSIX_PROCESS_BASE)/signal/sigaltstack.c
 LIBPOSIX_PROCESS_SRCS-y += $(LIBPOSIX_PROCESS_BASE)/signal/rt_sigpending.c
@@ -49,6 +50,7 @@ LIBPOSIX_PROCESS_CINCLUDES-y += -I$(UK_PLAT_COMMON_BASE)/include
 LIBPOSIX_PROCESS_ASINCLUDES-y += -I$(UK_PLAT_COMMON_BASE)/include
 LIBPOSIX_PROCESS_CXXINCLUDES-y += -I$(UK_PLAT_COMMON_BASE)/include
 
+UK_PROVIDED_SYSCALLS-$(CONFIG_LIBPOSIX_PROCESS) += alarm-1
 UK_PROVIDED_SYSCALLS-$(CONFIG_LIBPOSIX_PROCESS_CLONE) += clone-5e
 UK_PROVIDED_SYSCALLS-$(CONFIG_LIBPOSIX_PROCESS_EXECVE) += execve-3e
 UK_PROVIDED_SYSCALLS-$(CONFIG_LIBPOSIX_PROCESS) += pause-0

diff --git a/lib/posix-process/exportsyms.uk b/lib/posix-process/exportsyms.uk
index 2ddf9d81c09b509bdd411dbf52a6c6b63bf65717..f235a298312e26985158f5682940dfd9d64ec000 100644 (file)
--- a/lib/posix-process/exportsyms.uk
+++ b/lib/posix-process/exportsyms.uk
@@ -1,3 +1,4 @@
+alarm
 execl
 execle
 execlp

diff --git a/lib/posix-process/signal/alarm.c b/lib/posix-process/signal/alarm.c
new file mode 100644 (file)
index 0000000..e13b7e1
--- /dev/null
+++ b/lib/posix-process/signal/alarm.c
@@ -0,0 +1,15 @@
+/* SPDX-License-Identifier: BSD-3-Clause */
+/* Copyright (c) 2023, Unikraft GmbH and The Unikraft Authors.
+ * Licensed under the BSD-3-Clause License (the "License").
+ * You may not use this file except in compliance with the License.
+ */
+
+#include <uk/essentials.h>
+#include <uk/syscall.h>
+
+UK_SYSCALL_R_DEFINE(unsigned int, alarm,
+                   unsigned int, seconds)
+{
+       UK_WARN_STUBBED();
+       return 0;
+}