mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-27 21:20:18 +00:00
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
109 lines
3.2 KiB
C
109 lines
3.2 KiB
C
/* Basic test for gethostid.
|
|
Copyright (C) 2018-2021 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 <gnu/lib-names.h>
|
|
#include <nss.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <support/namespace.h>
|
|
#include <support/support.h>
|
|
#include <support/temp_file.h>
|
|
#include <support/xdlfcn.h>
|
|
#include <support/xstdio.h>
|
|
#include <support/xunistd.h>
|
|
#include <unistd.h>
|
|
|
|
/* Initial test is run outside a chroot, to increase the likelihood of
|
|
success. */
|
|
static void
|
|
outside_chroot (void *closure)
|
|
{
|
|
long id = gethostid ();
|
|
printf ("info: host ID outside chroot: 0x%lx\n", id);
|
|
}
|
|
|
|
/* The same, but this time perform a chroot operation. */
|
|
static void
|
|
in_chroot (void *closure)
|
|
{
|
|
const char *chroot_path = closure;
|
|
xchroot (chroot_path);
|
|
long id = gethostid ();
|
|
printf ("info: host ID in chroot: 0x%lx\n", id);
|
|
}
|
|
|
|
static int
|
|
do_test (void)
|
|
{
|
|
support_isolate_in_subprocess (outside_chroot, NULL);
|
|
|
|
/* Now run the test inside a chroot. */
|
|
support_become_root ();
|
|
if (!support_can_chroot ())
|
|
/* Cannot perform further tests. */
|
|
return 0;
|
|
|
|
/* Only use nss_files. */
|
|
__nss_configure_lookup ("hosts", "files");
|
|
|
|
/* Load the DSO outside of the chroot. */
|
|
xdlopen (LIBNSS_FILES_SO, RTLD_LAZY);
|
|
|
|
char *chroot_dir = support_create_temp_directory ("tst-gethostid-");
|
|
support_isolate_in_subprocess (in_chroot, chroot_dir);
|
|
|
|
/* Tests with /etc/hosts in the chroot. */
|
|
{
|
|
char *path = xasprintf ("%s/etc", chroot_dir);
|
|
add_temp_file (path);
|
|
xmkdir (path, 0777);
|
|
free (path);
|
|
path = xasprintf ("%s/etc/hosts", chroot_dir);
|
|
add_temp_file (path);
|
|
|
|
FILE *fp = xfopen (path, "w");
|
|
xfclose (fp);
|
|
printf ("info: chroot test with an empty /etc/hosts file\n");
|
|
support_isolate_in_subprocess (in_chroot, chroot_dir);
|
|
|
|
char hostname[1024];
|
|
int ret = gethostname (hostname, sizeof (hostname));
|
|
if (ret < 0)
|
|
printf ("warning: invalid result from gethostname: %d\n", ret);
|
|
else if (strlen (hostname) == 0)
|
|
puts ("warning: gethostname returned empty string");
|
|
else
|
|
{
|
|
printf ("info: chroot test with IPv6 address in /etc/hosts for: %s\n",
|
|
hostname);
|
|
fp = xfopen (path, "w");
|
|
/* Use an IPv6 address to induce another lookup failure. */
|
|
fprintf (fp, "2001:db8::1 %s\n", hostname);
|
|
xfclose (fp);
|
|
support_isolate_in_subprocess (in_chroot, chroot_dir);
|
|
}
|
|
free (path);
|
|
}
|
|
free (chroot_dir);
|
|
|
|
return 0;
|
|
}
|
|
|
|
#include <support/test-driver.c>
|