Tue Jun 18 17:56:44 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu>

	* stdlib/test-canon.c: New test program contributed by David Mosberger.
	* stdlib/Makefile (tests): Add test-canon.
	* stdlib/canonicalize.c: Rewritten by David Mosberger.

1 files changed, 181 insertions, 0 deletions

diff --git a/stdlib/test-canon.c b/stdlib/test-canon.c
new file mode 100644
index 0000000000..6f0171d200
--- /dev/null
+++ b/stdlib/test-canon.c
@@ -0,0 +1,181 @@
+/* Test program for returning the canonical absolute name of a given file.
+Copyright (C) 1996 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+Contributed by David Mosberger <davidm@azstarnet.com>.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 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
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB.  If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA.  */
+
+/* This file must be run from within a directory called "stdlib".  */
+
+#include <errno.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <sys/param.h>
+
+static char	cwd[1024];
+static size_t	cwd_len;
+
+struct {
+  const char *	name;
+  const char *	value;
+} symlinks[] = {
+  {"SYMLINK_LOOP",	"SYMLINK_LOOP"},
+  {"SYMLINK_1",		"."},
+  {"SYMLINK_2",		"//////./../../etc"},
+  {"SYMLINK_3",		"SYMLINK_1"},
+  {"SYMLINK_4",		"SYMLINK_2"},
+  {"SYMLINK_5",		"doesNotExist"},
+};
+
+struct {
+  const char * in, * out, * resolved;
+  int errno;
+} tests[] = {
+  /*  0 */
+  {"/",					"/"},
+  {"/////////////////////////////////",	"/"},
+  {"/.././.././.././..///",		"/"},
+  {"/etc",				"/etc"},
+  {"/etc/../etc",		 	"/etc"},
+  /*  5 */
+  {"/doesNotExist/../etc",		0, "/doesNotExist", ENOENT},
+  {"./././././././././.",		"."},
+  {"/etc/.//doesNotExist",		0, "/etc/doesNotExist", ENOENT},
+  {"./doesExist",			"./doesExist"},
+  {"./doesExist/",			"./doesExist"},
+  /* 10 */
+  {"./doesExist/../doesExist",		"./doesExist"},
+  {"foobar",				0, "./foobar", ENOENT},
+  {".",					"."},
+  {"./foobar",				0, "./foobar", ENOENT},
+  {"SYMLINK_LOOP",			0, "./SYMLINK_LOOP", ELOOP},
+  /* 15 */
+  {"./SYMLINK_LOOP",			0, "./SYMLINK_LOOP", ELOOP},
+  {"SYMLINK_1",				"."},
+  {"SYMLINK_1/foobar",			0, "./foobar", ENOENT},
+  {"SYMLINK_2",				"/etc"},
+  {"SYMLINK_3",				"."},
+  /* 20 */
+  {"SYMLINK_4",				"/etc"},
+  {"../stdlib/SYMLINK_1",		"."},
+  {"../stdlib/SYMLINK_2",		"/etc"},
+  {"../stdlib/SYMLINK_3",		"."},
+  {"../stdlib/SYMLINK_4",		"/etc"},
+  /* 25 */
+  {"./SYMLINK_5",			0, "./doesNotExist", ENOENT},
+  {"SYMLINK_5",				0, "./doesNotExist", ENOENT},
+  {"SYMLINK_5/foobar",			0, "./doesNotExist", ENOENT},
+  {"doesExist/../../stdlib/doesExist",	"./doesExist"},
+  {"doesExist/.././../stdlib/.",	"."}
+};
+
+
+int
+check_path (const char * result, const char * expected)
+{
+  int good;
+
+  if (!result)
+    return (expected == NULL);
+
+  if (!expected)
+    return 0;
+
+  if (expected[0] == '.' && (expected[1] == '/' || expected[1] == '\0'))
+    good = (strncmp (result, cwd, cwd_len) == 0
+	    && strcmp (result + cwd_len, expected + 1) == 0);
+  else
+    good = (strcmp (expected, result) == 0);
+
+  return good;
+}
+
+
+void
+main (int argc, char ** argv)
+{
+  char * result;
+  int fd, i, errors = 0;
+  char buf[PATH_MAX];
+
+  getcwd (cwd, sizeof(buf));
+  cwd_len = strlen (cwd);
+
+  for (i = 0; i < sizeof (symlinks) / sizeof (symlinks[0]); ++i)
+    symlink (symlinks[i].value, symlinks[i].name);
+
+  fd = open("doesExist", O_CREAT | O_EXCL, 0777);
+
+  for (i = 0; i < sizeof (tests) / sizeof (tests[0]); ++i)
+    {
+      buf[0] = '\0';
+      result = realpath (tests[i].in, buf);
+
+      if (!check_path (result, tests[i].out))
+	{
+	  printf ("%s: flunked test %d (expected `%s', got `%s')\n",
+		  argv[0], i, tests[i].out ? tests[i].out : "NULL",
+		  result ? result : "NULL");
+	  ++errors;
+	  continue;
+	}
+
+      if (!check_path (buf, tests[i].out ? tests[i].out : tests[i].resolved))
+	{
+	  printf ("%s: flunked test %d (expected resolved `%s', got `%s')\n",
+		  argv[0], i, tests[i].out ? tests[i].out : tests[i].resolved,
+		  buf);
+	  ++errors;
+	  continue;
+	}
+
+      if (!tests[i].out && errno != tests[i].errno)
+	{
+	  printf ("%s: flunked test %d (expected errno %d, got %d)\n",
+		  argv[0], i, tests[i].errno, errno);
+	  ++errors;
+	  continue;
+	}
+    }
+
+  getcwd (buf, sizeof(buf));
+  if (strcmp (buf, cwd))
+    {
+      printf ("%s: current working directory changed from %s to %s\n",
+	      argv[0], cwd, buf);
+      ++errors;
+    }
+
+  if (fd >= 0)
+    unlink("doesExist");
+
+  for (i = 0; i < sizeof (symlinks) / sizeof (symlinks[0]); ++i)
+    unlink (symlinks[i].name);
+
+  if (errors == 0)
+    {
+      puts ("No errors.");
+      exit (EXIT_SUCCESS);
+    }
+  else
+    {
+      printf ("%d errors.\n", errors);
+      exit (EXIT_FAILURE);
+    }
+}