commit 9a1e7257a4292d3aea45c8317df3956f4331d8ce

Author: Florian Weimer <fweimer@redhat.com>

Date:   Mon Sep 2 12:40:38 2019 +0200

    Add misc/tst-mntent-autofs, testing autofs "ignore" filtering

diff -rupN a/misc/Makefile b/misc/Makefile

--- a/misc/Makefile	2020-01-20 15:48:16.472243494 -0500

+++ b/misc/Makefile	2020-01-20 16:03:01.291550472 -0500

@@ -76,7 +76,8 @@ install-lib := libbsd-compat.a libg.a

 gpl2lgpl := error.c error.h

 tests := tst-dirname tst-tsearch tst-fdset tst-efgcvt tst-mntent tst-hsearch \

-	 tst-error1 tst-pselect tst-insremque tst-mntent2 bug-hsearch1 bug18240

+	 tst-error1 tst-pselect tst-insremque tst-mntent2 bug-hsearch1 bug18240 \

+	 tst-mntent-autofs

 ifeq ($(run-built-tests),yes)

 tests: $(objpfx)tst-error1-mem

 endif

diff -rupN a/misc/tst-mntent-autofs.c b/misc/tst-mntent-autofs.c

--- a/misc/tst-mntent-autofs.c	1969-12-31 19:00:00.000000000 -0500

+++ b/misc/tst-mntent-autofs.c	2020-01-20 16:01:37.233483270 -0500

@@ -0,0 +1,141 @@

+/* Test autofs "ignore" filtering for getment_r.

+   Copyright (C) 2019 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

+   <http://www.gnu.org/licenses/>.  */

+

+#include <array_length.h>

+#include <errno.h>

+#include <mntent.h>

+#include <stdio.h>

+#include <stdlib.h>

+#include <string.h>

+#include <support/check.h>

+#include <support/temp_file.h>

+#include <support/xstdio.h>

+#include <support/xunistd.h>

+

+struct test_case

+{

+  const char *line;

+  struct

+  {

+    /* Like struct mntent, but with const pointers.  */

+    const char *mnt_fsname;

+    const char *mnt_dir;

+    const char *mnt_type;

+    const char *mnt_opts;

+    int mnt_freq;

+    int mnt_passno;

+  } expected;

+};

+

+static struct test_case test_cases[] =

+  {

+    { "/etc/auto.direct /mnt/auto/1 autofs defaults 0 0",

+      { "/etc/auto.direct", "/mnt/auto/1", "autofs", "defaults", 0, 0 } },

+

+    /* These entries are filtered out.  */

+    { "/etc/auto.2 /mnt/auto/2 autofs ignore 0 0", { NULL, } },

+    { "/etc/auto.3 /mnt/auto/3 autofs ignore,other 1 2", { NULL, } },

+    { "/etc/auto.4 /mnt/auto/4 autofs other,ignore 3 4", { NULL, } },

+    { "/etc/auto.5 /mnt/auto/5 autofs opt1,ignore,opt2 5 6", { NULL, } },

+

+    /* Dummy entry to make the desynchronization more obvious.  */

+    { "/dev/sda1 / xfs defaults 0 0",

+      { "/dev/sda1", "/", "xfs", "defaults", 0, 0 } },

+

+    /* These are not filtered because the file system is not autofs.  */

+    { "/etc/auto.direct /mnt/auto/6 autofs1 ignore 0 0",

+      { "/etc/auto.direct", "/mnt/auto/6", "autofs1", "ignore", 0, 0 } },

+    { "/etc/auto.direct /mnt/auto/7 autofs1 ignore,other 0 0",

+      { "/etc/auto.direct", "/mnt/auto/7", "autofs1", "ignore,other", 0, 0 } },

+    { "/etc/auto.direct /mnt/auto/8 autofs1 other,ignore 0 0",

+      { "/etc/auto.direct", "/mnt/auto/8", "autofs1", "other,ignore", 0, 0 } },

+    { "/etc/auto.direct /mnt/auto/9 autofs1 opt1,ignore,opt2 0 0",

+      { "/etc/auto.direct", "/mnt/auto/9", "autofs1", "opt1,ignore,opt2", } },

+

+    /* These are not filtered because the string "ignore" is not an

+       option name.  */

+    { "/etc/auto.direct /mnt/auto/10 autofs noignore 1 2",

+      { "/etc/auto.direct", "/mnt/auto/10", "autofs", "noignore", 1, 2 } },

+    { "/etc/auto.direct /mnt/auto/11 autofs noignore,other 0 0",

+      { "/etc/auto.direct", "/mnt/auto/11", "autofs", "noignore,other", } },

+    { "/etc/auto.direct /mnt/auto/12 autofs other,noignore 0 0",

+      { "/etc/auto.direct", "/mnt/auto/12", "autofs", "other,noignore", } },

+    { "/etc/auto.direct /mnt/auto/13 autofs errors=ignore 0 0",

+      { "/etc/auto.direct", "/mnt/auto/13", "autofs", "errors=ignore", } },

+    { "/etc/auto.direct /mnt/auto/14 autofs errors=ignore,other 0 0",

+      { "/etc/auto.direct", "/mnt/auto/14", "autofs",

+        "errors=ignore,other", } },

+    { "/etc/auto.direct /mnt/auto/15 autofs other,errors=ignore 0 0",

+      { "/etc/auto.direct", "/mnt/auto/15", "autofs",

+        "other,errors=ignore", } },

+

+    /* These are not filtered because the string is escaped.  '\151'

+       is 'i', but it is not actually decoded by the parser.  */

+    { "/etc/auto.\\151gnore /mnt/auto/16 autofs \\151gnore 0 0",

+      { "/etc/auto.\\151gnore", "/mnt/auto/16", "autofs",

+        "\\151gnore", } },

+  };

+

+static int

+do_test (void)

+{

+  char *path;

+  xclose (create_temp_file ("tst-mntent-autofs-", &path));

+

+  /* Write the test file.  */

+  FILE *fp = xfopen (path, "w");

+  for (size_t i = 0; i < array_length (test_cases); ++i)

+    fprintf (fp, "%s\n", test_cases[i].line);

+  xfclose (fp);

+

+  /* Open the test file again, this time for parsing.  */

+  fp = setmntent (path, "r");

+  TEST_VERIFY_EXIT (fp != NULL);

+  char buffer[512];

+  struct mntent me;

+

+  for (size_t i = 0; i < array_length (test_cases); ++i)

+    {

+      if (test_cases[i].expected.mnt_type == NULL)

+        continue;

+

+      memset (buffer, 0xcc, sizeof (buffer));

+      memset (&me, 0xcc, sizeof (me));

+      struct mntent *pme = getmntent_r (fp, &me, buffer, sizeof (buffer));

+      TEST_VERIFY_EXIT (pme != NULL);

+      TEST_VERIFY (pme == &me);

+      TEST_COMPARE_STRING (test_cases[i].expected.mnt_fsname, me.mnt_fsname);

+      TEST_COMPARE_STRING (test_cases[i].expected.mnt_dir, me.mnt_dir);

+      TEST_COMPARE_STRING (test_cases[i].expected.mnt_type, me.mnt_type);

+      TEST_COMPARE_STRING (test_cases[i].expected.mnt_opts, me.mnt_opts);

+      TEST_COMPARE (test_cases[i].expected.mnt_freq, me.mnt_freq);

+      TEST_COMPARE (test_cases[i].expected.mnt_passno, me.mnt_passno);

+    }

+

+  TEST_VERIFY (getmntent_r (fp, &me, buffer, sizeof (buffer)) == NULL);

+

+  TEST_COMPARE (feof (fp), 1);

+  TEST_COMPARE (ferror (fp), 0);

+  errno = 0;

+  TEST_COMPARE (endmntent (fp), 1);

+  TEST_COMPARE (errno, 0);

+  free (path);

+  return 0;

+}

+

+#include <support/test-driver.c>