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| -rw-r--r-- | test/stdlib/test-canon.c | 254 |
1 files changed, 254 insertions, 0 deletions
diff --git a/test/stdlib/test-canon.c b/test/stdlib/test-canon.c new file mode 100644 index 000000000..dd2f9bce3 --- /dev/null +++ b/test/stdlib/test-canon.c @@ -0,0 +1,254 @@ +/* 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}, +#ifdef __UCLIBC__ + /* we differ from glibc here, but POSIX allows it as it says that if we did + * not successfuly complete, the value of resolved_path is undefined */ + {"SYMLINK_LOOP", 0, "", ELOOP}, + /* 15 */ + {"./SYMLINK_LOOP", 0, "", ELOOP}, +#else + {"SYMLINK_LOOP", 0, "./SYMLINK_LOOP", ELOOP}, + /* 15 */ + {"./SYMLINK_LOOP", 0, "./SYMLINK_LOOP", ELOOP}, +#endif + {"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/.", "."}, +#ifndef __UCLIBC__ + /* we dont check for ENOTDIR in readlink() which causes failures to + * propogate up to realpath() ... so disable for now ... */ + /* 30 */ + {"./doesExist/someFile/", 0, "./doesExist/someFile", ENOTDIR}, + {"./doesExist/someFile/..", 0, "./doesExist/someFile", ENOTDIR}, +#endif +}; + + +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); + +#ifndef __UCLIBC__ + /* we choose to crash in uClibc when given a NULL */ + 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; + } +#endif + +#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; + } + +#ifndef __UCLIBC__ + /* we choose to crash in uClibc when given a NULL */ + 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); +#endif + } + + 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; +} |