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glibc/stdlib/test-canon.c
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/* Test program for returning the canonical absolute name of a given file. | |
Copyright (C) 1996,1997,2000,2002,2004,2005,2006 | |
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 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, write to the Free | |
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA | |
02111-1307 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> | |
/* Prototype for our test function. */ | |
extern int do_test (int argc, char *argv[]); | |
#include <test-skeleton.c> | |
#ifndef PATH_MAX | |
# define PATH_MAX 4096 | |
#endif | |
static char cwd[PATH_MAX]; | |
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 error; | |
} 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/.", "."}, | |
/* 30 */ | |
{"./doesExist/someFile/", 0, "./doesExist/someFile", ENOTDIR}, | |
{"./doesExist/someFile/..", 0, "./doesExist/someFile", ENOTDIR}, | |
}; | |
static 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; | |
} | |
int | |
do_test (int argc, char ** argv) | |
{ | |
char * result; | |
int i, errors = 0; | |
char buf[PATH_MAX]; | |
getcwd (cwd, sizeof(buf)); | |
cwd_len = strlen (cwd); | |
errno = 0; | |
if (realpath (NULL, buf) != NULL || errno != EINVAL) | |
{ | |
printf ("%s: expected return value NULL and errno set to EINVAL" | |
" for realpath(NULL,...)\n", argv[0]); | |
++errors; | |
} | |
#if 0 | |
/* This is now allowed. The test is invalid. */ | |
errno = 0; | |
if (realpath ("/", NULL) != NULL || errno != EINVAL) | |
{ | |
printf ("%s: expected return value NULL and errno set to EINVAL" | |
" for realpath(...,NULL)\n", argv[0]); | |
++errors; | |
} | |
#endif | |
errno = 0; | |
if (realpath ("", buf) != NULL || errno != ENOENT) | |
{ | |
printf ("%s: expected return value NULL and set errno to ENOENT" | |
" for realpath(\"\",...)\n", argv[0]); | |
++errors; | |
} | |
for (i = 0; i < (int) (sizeof (symlinks) / sizeof (symlinks[0])); ++i) | |
symlink (symlinks[i].value, symlinks[i].name); | |
int has_dir = mkdir ("doesExist", 0777) == 0; | |
int fd = has_dir ? creat ("doesExist/someFile", 0777) : -1; | |
for (i = 0; i < (int) (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].error) | |
{ | |
printf ("%s: flunked test %d (expected errno %d, got %d)\n", | |
argv[0], i, tests[i].error, errno); | |
++errors; | |
continue; | |
} | |
char *result2 = realpath (tests[i].in, NULL); | |
if ((result2 == NULL && result != NULL) | |
|| (result2 != NULL && strcmp (result, result2) != 0)) | |
{ | |
printf ("\ | |
%s: realpath(..., NULL) produced different result than realpath(..., buf): '%s' vs '%s'\n", | |
argv[0], result2, result); | |
++errors; | |
} | |
free (result2); | |
} | |
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) | |
{ | |
close (fd); | |
unlink ("doesExist/someFile"); | |
} | |
if (has_dir) | |
rmdir ("doesExist"); | |
for (i = 0; i < (int) (sizeof (symlinks) / sizeof (symlinks[0])); ++i) | |
unlink (symlinks[i].name); | |
if (errors != 0) | |
{ | |
printf ("%d errors.\n", errors); | |
return EXIT_FAILURE; | |
} | |
puts ("No errors."); | |
return EXIT_SUCCESS; | |
} |