mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2024-12-29 06:02:07 +03:00
44 lines
1.2 KiB
C++
44 lines
1.2 KiB
C++
/*
|
|
* Copyright (c) 2021, Ben Wiederhake <BenWiederhake.GitHub@gmx.de>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#include <LibTest/TestCase.h>
|
|
#include <fcntl.h>
|
|
#include <sys/prctl.h>
|
|
#include <unistd.h>
|
|
|
|
TEST_CASE(check_root)
|
|
{
|
|
auto uid = geteuid();
|
|
// This test only makes sense as root.
|
|
EXPECT_EQ(uid, 0u);
|
|
|
|
// Before we make the process dumpable, become "fully" root, so that the user cannot tamper with our memory:
|
|
EXPECT_EQ(setuid(0), 0);
|
|
|
|
// If running as setuid, the process is automatically marked as non-dumpable, which bars access to /proc/self/.
|
|
// However, that is the easiest guess for a /proc/$PID/ directory, so we'd like to use that.
|
|
// In order to do so, mark this process as dumpable:
|
|
EXPECT_EQ(prctl(PR_SET_DUMPABLE, 1, 0), 0);
|
|
}
|
|
|
|
TEST_CASE(root_writes_to_procfs)
|
|
{
|
|
int fd = open("/proc/self/unveil", O_RDWR | O_APPEND | O_CREAT, 0666); // = 6
|
|
if (fd < 0) {
|
|
perror("open");
|
|
dbgln("fd was {}", fd);
|
|
FAIL("open failed?! See debugout");
|
|
return;
|
|
}
|
|
|
|
int rc = write(fd, "hello", 5);
|
|
perror("write");
|
|
dbgln("write rc = {}", rc);
|
|
if (rc >= 0) {
|
|
FAIL("Wrote successfully?!");
|
|
}
|
|
}
|