mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-23 17:53:37 +08:00
2b778ceb40
I used these shell commands: ../glibc/scripts/update-copyrights $PWD/../gnulib/build-aux/update-copyright (cd ../glibc && git commit -am"[this commit message]") and then ignored the output, which consisted lines saying "FOO: warning: copyright statement not found" for each of 6694 files FOO. I then removed trailing white space from benchtests/bench-pthread-locks.c and iconvdata/tst-iconv-big5-hkscs-to-2ucs4.c, to work around this diagnostic from Savannah: remote: *** pre-commit check failed ... remote: *** error: lines with trailing whitespace found remote: error: hook declined to update refs/heads/master
146 lines
3.9 KiB
C
146 lines
3.9 KiB
C
/* Copyright (C) 2014-2021 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, see
|
|
<https://www.gnu.org/licenses/>. */
|
|
|
|
#include <errno.h>
|
|
#include <pthread.h>
|
|
#include <signal.h>
|
|
#include <stdbool.h>
|
|
#include <stdio.h>
|
|
#include <sys/syscall.h>
|
|
#include <unistd.h>
|
|
|
|
/* Check that a partial setuid failure aborts the process. */
|
|
|
|
static pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;
|
|
static pthread_cond_t cond_send;
|
|
static void (*func_sent) (void);
|
|
static pthread_cond_t cond_recv;
|
|
|
|
#define FAIL(fmt, ...) \
|
|
do { printf ("FAIL: " fmt "\n", __VA_ARGS__); _exit (1); } while (0)
|
|
|
|
static void *
|
|
thread_func (void *ctx __attribute__ ((unused)))
|
|
{
|
|
int ret = pthread_mutex_lock (&mutex);
|
|
if (ret != 0)
|
|
FAIL ("pthread_mutex_lock (thread): %d", ret);
|
|
|
|
while (true)
|
|
{
|
|
if (func_sent != NULL)
|
|
{
|
|
void (*func) (void) = func_sent;
|
|
ret = pthread_mutex_unlock (&mutex);
|
|
if (ret != 0)
|
|
FAIL ("pthread_mutex_unlock (thread): %d", ret);
|
|
func ();
|
|
ret = pthread_mutex_lock (&mutex);
|
|
if (ret != 0)
|
|
FAIL ("pthread_mutex_lock (thread): %d", ret);
|
|
func_sent = NULL;
|
|
ret = pthread_cond_signal (&cond_recv);
|
|
if (ret != 0)
|
|
FAIL ("pthread_cond_signal (recv): %d", ret);
|
|
}
|
|
ret = pthread_cond_wait (&cond_send, &mutex);
|
|
if (ret != 0)
|
|
FAIL ("pthread_cond_wait (send): %d", ret);
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
static void
|
|
run_on_thread (void (*func) (void))
|
|
{
|
|
int ret = pthread_mutex_lock (&mutex);
|
|
if (ret != 0)
|
|
FAIL ("pthread_mutex_lock (%s): %d", __func__, ret);
|
|
func_sent = func;
|
|
ret = pthread_mutex_unlock (&mutex);
|
|
if (ret != 0)
|
|
FAIL ("pthread_mutex_unlock (%s): %d", __func__, ret);
|
|
|
|
ret = pthread_cond_signal (&cond_send);
|
|
if (ret != 0)
|
|
FAIL ("pthread_mutex_lock (%s): %d", __func__, ret);
|
|
|
|
ret = pthread_mutex_lock (&mutex);
|
|
if (ret != 0)
|
|
FAIL ("pthread_mutex_lock (%s): %d", __func__, ret);
|
|
|
|
while (func_sent != NULL)
|
|
{
|
|
ret = pthread_cond_wait (&cond_recv, &mutex);
|
|
if (ret != 0)
|
|
FAIL ("pthread_mutex_wait (%s): %d", __func__, ret);
|
|
}
|
|
ret = pthread_mutex_unlock (&mutex);
|
|
if (ret != 0)
|
|
FAIL ("pthread_mutex_unlock (%s): %d", __func__, ret);
|
|
}
|
|
|
|
static void
|
|
change_thread_ids (void)
|
|
{
|
|
long ret = syscall (__NR_setresuid, 2001, 2002, 2003);
|
|
if (ret != 0)
|
|
FAIL ("setresuid (2001, 2002, 2003): %ld", ret);
|
|
}
|
|
|
|
static uid_t ruid, euid, suid;
|
|
|
|
static void
|
|
get_thread_ids (void)
|
|
{
|
|
if (getresuid (&ruid, &euid, &suid) < 0)
|
|
FAIL ("getresuid: %m (%d)", errno);
|
|
}
|
|
|
|
static void
|
|
abort_expected (int signal __attribute__ ((unused)))
|
|
{
|
|
_exit (0);
|
|
}
|
|
|
|
static int
|
|
do_test (void)
|
|
{
|
|
pthread_t thread;
|
|
int ret = pthread_create (&thread, NULL, thread_func, NULL);
|
|
if (ret != 0)
|
|
FAIL ("pthread_create: %d", ret);
|
|
|
|
run_on_thread (change_thread_ids);
|
|
|
|
signal (SIGABRT, &abort_expected);
|
|
/* This should abort the process. */
|
|
if (setresuid (1001, 1002, 1003) < 0)
|
|
FAIL ("setresuid: %m (%d)", errno);
|
|
signal (SIGABRT, SIG_DFL);
|
|
|
|
/* If we get here, check that the kernel did the right thing. */
|
|
run_on_thread (get_thread_ids);
|
|
if (ruid != 1001 || euid != 1002 || suid != 1003)
|
|
FAIL ("unexpected UIDs after setuid: %ld, %ld, %ld",
|
|
(long) ruid, (long) euid, (long) suid);
|
|
return 0;
|
|
}
|
|
|
|
#define TEST_FUNCTION do_test ()
|
|
#include "../test-skeleton.c"
|