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wireguard: selftests: set fake real time in init

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Not all platforms have an RTC, and rather than trying to force one into
each, it's much easier to just set a fixed time. This is necessary
because WireGuard's latest handshakes parameter is returned in wallclock
time, and if the system time isn't set, and the system is really fast,
then this returns 0, which trips the test.

Turning this on requires setting CONFIG_COMPAT_32BIT_TIME=y, as musl
doesn't support settimeofday without it.

Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Jason A. Donenfeld 2022-07-07 02:31:52 +02:00 committed by Jakub Kicinski
parent faa4e04e5e
commit 829be057db
8 changed files with 18 additions and 0 deletions
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1
tools/testing/selftests/wireguard/qemu/arch/arm.config
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@ -7,6 +7,7 @@ CONFIG_SERIAL_AMBA_PL011_CONSOLE=y
CONFIG_VIRTIO_MENU=y
CONFIG_VIRTIO_MMIO=y
CONFIG_VIRTIO_CONSOLE=y
CONFIG_COMPAT_32BIT_TIME=y
CONFIG_CMDLINE_BOOL=y
CONFIG_CMDLINE="console=ttyAMA0 wg.success=vport0p1 panic_on_warn=1"
CONFIG_FRAME_WARN=1024

1
tools/testing/selftests/wireguard/qemu/arch/armeb.config
View File

@ -7,6 +7,7 @@ CONFIG_SERIAL_AMBA_PL011_CONSOLE=y
CONFIG_VIRTIO_MENU=y
CONFIG_VIRTIO_MMIO=y
CONFIG_VIRTIO_CONSOLE=y
CONFIG_COMPAT_32BIT_TIME=y
CONFIG_CMDLINE_BOOL=y
CONFIG_CMDLINE="console=ttyAMA0 wg.success=vport0p1 panic_on_warn=1"
CONFIG_CPU_BIG_ENDIAN=y

1
tools/testing/selftests/wireguard/qemu/arch/i686.config
View File

@ -1,6 +1,7 @@
CONFIG_ACPI=y
CONFIG_SERIAL_8250=y
CONFIG_SERIAL_8250_CONSOLE=y
CONFIG_COMPAT_32BIT_TIME=y
CONFIG_CMDLINE_BOOL=y
CONFIG_CMDLINE="console=ttyS0 wg.success=ttyS1 panic_on_warn=1"
CONFIG_FRAME_WARN=1024

1
tools/testing/selftests/wireguard/qemu/arch/m68k.config
View File

@ -5,5 +5,6 @@ CONFIG_MAC=y
CONFIG_SERIAL_PMACZILOG=y
CONFIG_SERIAL_PMACZILOG_TTYS=y
CONFIG_SERIAL_PMACZILOG_CONSOLE=y
CONFIG_COMPAT_32BIT_TIME=y
CONFIG_CMDLINE="console=ttyS0 wg.success=ttyS1 panic_on_warn=1"
CONFIG_FRAME_WARN=1024

1
tools/testing/selftests/wireguard/qemu/arch/mips.config
View File

@ -6,6 +6,7 @@ CONFIG_POWER_RESET=y
CONFIG_POWER_RESET_SYSCON=y
CONFIG_SERIAL_8250=y
CONFIG_SERIAL_8250_CONSOLE=y
CONFIG_COMPAT_32BIT_TIME=y
CONFIG_CMDLINE_BOOL=y
CONFIG_CMDLINE="console=ttyS0 wg.success=ttyS1 panic_on_warn=1"
CONFIG_FRAME_WARN=1024

1
tools/testing/selftests/wireguard/qemu/arch/mipsel.config
View File

@ -7,6 +7,7 @@ CONFIG_POWER_RESET=y
CONFIG_POWER_RESET_SYSCON=y
CONFIG_SERIAL_8250=y
CONFIG_SERIAL_8250_CONSOLE=y
CONFIG_COMPAT_32BIT_TIME=y
CONFIG_CMDLINE_BOOL=y
CONFIG_CMDLINE="console=ttyS0 wg.success=ttyS1 panic_on_warn=1"
CONFIG_FRAME_WARN=1024

1
tools/testing/selftests/wireguard/qemu/arch/powerpc.config
View File

@ -4,6 +4,7 @@ CONFIG_PPC_85xx=y
CONFIG_PHYS_64BIT=y
CONFIG_SERIAL_8250=y
CONFIG_SERIAL_8250_CONSOLE=y
CONFIG_COMPAT_32BIT_TIME=y
CONFIG_MATH_EMULATION=y
CONFIG_CMDLINE_BOOL=y
CONFIG_CMDLINE="console=ttyS0 wg.success=ttyS1 panic_on_warn=1"

11
tools/testing/selftests/wireguard/qemu/init.c
View File

@ -11,6 +11,7 @@
#include <stdlib.h>
#include <stdbool.h>
#include <fcntl.h>
#include <time.h>
#include <sys/wait.h>
#include <sys/mount.h>
#include <sys/stat.h>
@ -70,6 +71,15 @@ static void seed_rng(void)
close(fd);
}
static void set_time(void)
{
if (time(NULL))
return;
pretty_message("[+] Setting fake time...");
if (stime(&(time_t){1433512680}) < 0)
panic("settimeofday()");
}
static void mount_filesystems(void)
{
pretty_message("[+] Mounting filesystems...");
@ -259,6 +269,7 @@ int main(int argc, char *argv[])
print_banner();
mount_filesystems();
seed_rng();
set_time();
kmod_selftests();
enable_logging();
clear_leaks();