[CRIU] [PATCH v2] zdtm: new testcase for unhashed proc entries

[Andrey Wagin]

Acked-by: Andrey Wagin <avagin at gmail.com>

2012/9/13 Konstantin Khlebnikov <khlebnikov at openvz.org>:
> Testcase: fork child, chdir into /proc/$pid and kill child.
>
> test for http://bugzilla.openvz.org/show_bug.cgi?id=2315
>
> Signed-off-by: Konstantin Khlebnikov <khlebnikov at openvz.org>
> ---
>  test/zdtm/live/static/Makefile        |    1
>  test/zdtm/live/static/unhashed_proc.c |   81 +++++++++++++++++++++++++++++++++
>  2 files changed, 82 insertions(+)
>  create mode 100644 test/zdtm/live/static/unhashed_proc.c
>
> diff --git a/test/zdtm/live/static/Makefile b/test/zdtm/live/static/Makefile
> index 692b687..d0806b0 100644
> --- a/test/zdtm/live/static/Makefile
> +++ b/test/zdtm/live/static/Makefile
> @@ -62,6 +62,7 @@ TST_NOFILE    =                               \
>                 netns                           \
>                 session01                       \
>                 socket-ext                      \
> +               unhashed_proc                   \
>  #              jobctl00                        \
>
>  TST_FILE       =                               \
> diff --git a/test/zdtm/live/static/unhashed_proc.c b/test/zdtm/live/static/unhashed_proc.c
> new file mode 100644
> index 0000000..b1fc3fc
> --- /dev/null
> +++ b/test/zdtm/live/static/unhashed_proc.c
> @@ -0,0 +1,81 @@
> +#include <errno.h>
> +#include <unistd.h>
> +#include <stdlib.h>
> +#include <sys/types.h>
> +#include <sys/wait.h>
> +#include <signal.h>
> +#include <string.h>
> +#include <linux/limits.h>
> +
> +#include "zdtmtst.h"
> +
> +const char *test_doc   = "Chdir into unhashed proc entry";
> +const char *test_author        = "Konstantin Khlebnikov <khlebnikov at openvz.org>";
> +
> +int main(int argc, char ** argv)
> +{
> +       int pid, len;
> +       char cwd1[PATH_MAX], cwd2[PATH_MAX];
> +
> +       test_init(argc, argv);
> +
> +       pid = fork();
> +       if (pid < 0) {
> +               err("Fork failed %m\n");
> +               exit(1);
> +       } else if (!pid) {
> +               pause();
> +               return 0;
> +       }
> +
> +       sprintf(cwd1, "/proc/%d", pid);
> +
> +       if (chdir(cwd1) < 0) {
> +               kill(pid, SIGKILL);
> +               err("Chdir failed %m\n");
> +               exit(1);
> +       }
> +
> +       kill(pid, SIGKILL);
> +       waitpid(pid, NULL, 0);
> +
> +       if (getcwd(cwd1, sizeof(cwd1))) {
> +               err("successfull getcwd: %s\n", cwd1);
> +               exit(1);
> +       } else if (errno != ENOENT) {
> +               err("wrong errno: %m\n");
> +               exit(1);
> +       }
> +
> +       len = readlink("/proc/self/cwd", cwd1, sizeof(cwd1));
> +       if (len < 0) {
> +               err("can't read cwd symlink %m\n");
> +               exit(1);
> +       }
> +       cwd1[len] = 0;
> +
> +       test_daemon();
> +       test_waitsig();
> +
> +       if (getcwd(cwd2, sizeof(cwd2))) {
> +               fail("successfull getcwd: %s\n", cwd2);
> +               exit(1);
> +       } else if (errno != ENOENT) {
> +               fail("wrong errno: %m\n");
> +               exit(1);
> +       }
> +
> +       len = readlink("/proc/self/cwd", cwd2, sizeof(cwd2)-1);
> +       if (len < 0) {
> +               fail("can't read cwd symlink %m\n");
> +               exit(1);
> +       }
> +       cwd2[len] = 0;
> +
> +       if (strcmp(cwd1, cwd2))
> +               test_msg("cwd differs: %s != %s\n", cwd1, cwd2);
> +
> +       pass();
> +
> +       return 0;
> +}
>
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