criu/test/zdtm/static/mnt_ext_master.c
Dmitry Safonov 3bdaf5a9d8 zdtm: rely on -D_GNU_SOURCE passed from Makefiles
After the commit
  02c763939c10 ("test/zdtm: unify common code")

CFLAGS with -D_GNU_SOURCE defined in the top Makefile
are being passed to tests Makefiles.
As _GNU_SOURCE is also defined by tests, that resulted in
zdtm tests build failures:

  make[2]: Entering directory `/home/criu/test/zdtm/lib'
   CC        test.o
  test.c:1:0: error: "_GNU_SOURCE" redefined [-Werror]
   #define _GNU_SOURCE
   ^
  <command-line>:0:0: note: this is the location of the previous definition
  cc1: all warnings being treated as errors
  make[2]: *** [test.o] Error 1

However, we didn't catch this in time by Travis-CI, as zdtm.py doesn't
do `make zdtm`, rather it does `make -C test/zdtm/{lib,static,transition}`.
By calling middle makefile this way, it doesn't have _GNU_SOURCE in
CFLAGS from top-Makefile.

I think the right thing to do here - is following CRIU's way:
rely on definition of _GNU_SOURCE by Makefiles.

This patch is almost fully generated with
  find test/zdtm/ -name '*.c' -type f					\
     -exec sed -i '/define _GNU_SOURCE/{n;/^$/d;}' '{}' \;		\
     -exec sed -i '/define _GNU_SOURCE/d' '{}' \;

With an exception for adding -D_GNU_SOURCE in tests Makefile.inc for
keeping the same behaviour for zdtm.py.
Also changed utsname.c to use utsname::domainname, rather private
utsname::__domainname, as now it's uncovered (from sys/utsname.h):
> struct utsname
>  {
...
> # ifdef __USE_GNU
>     char domainname[_UTSNAME_DOMAIN_LENGTH];
> # else
>     char __domainname[_UTSNAME_DOMAIN_LENGTH];
> # endif

Reported-by: Adrian Reber <areber@redhat.com>
Cc: Kir Kolyshkin <kir@openvz.org>
Signed-off-by: Dmitry Safonov <dsafonov@virtuozzo.com>
Signed-off-by: Andrei Vagin <avagin@virtuozzo.com>
2017-04-11 09:01:08 +03:00

68 lines
1.2 KiB
C

#include <sched.h>
#include <sys/mount.h>
#include <unistd.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <linux/limits.h>
#include <stdio.h>
#include <stdlib.h>
#include "zdtmtst.h"
const char *test_doc = "Check that mounts with external master peers are c/r'd";
const char *test_author = "Tycho Andersen <tycho.andersen@canonical.com>";
char *dirname = "mnt_ext_auto.test";
TEST_OPTION(dirname, string, "directory name", 1);
int main(int argc, char ** argv)
{
char src[PATH_MAX], dst[PATH_MAX], *root;
char *dname = "/tmp/zdtm_ext_auto.XXXXXX";
root = getenv("ZDTM_ROOT");
if (root == NULL) {
pr_perror("root");
return 1;
}
sprintf(dst, "%s/ext_mounts", getenv("ZDTM_ROOT"));
if (strcmp(getenv("ZDTM_NEWNS"), "1"))
goto test;
mkdir(dname, 755);
sprintf(src, "%s/test", dname);
if (mount("zdtm_auto_ext_mnt", dname, "tmpfs", 0, NULL)) {
pr_perror("mount");
return 1;
}
mkdir(src, 755);
mkdir(dst, 755);
unshare(CLONE_NEWNS);
if (mount(src, dst, NULL, MS_BIND, NULL)) {
pr_perror("bind");
return 1;
}
if (mount(src, dst, NULL, MS_SLAVE, NULL)) {
pr_perror("slave");
return 1;
}
test:
test_init(argc, argv);
test_daemon();
test_waitsig();
pass();
return 0;
}