/* Copyright (C) 2000-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@redhat.com>, 2000.
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 <dirent.h>
#include <errno.h>
#include <fcntl.h>
#include <mcheck.h>
#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/stat.h>
#include <libc-diag.h>
/* We expect four arguments:
- source directory name
- object directory
- common object directory
- the program name with path
*/
int
main (int argc, char *argv[])
{
const char *srcdir;
const char *objdir;
const char *common_objdir;
const char *progpath;
struct stat64 st1;
struct stat64 st2;
struct stat64 st3;
DIR *dir1;
DIR *dir2;
int result = 0;
struct dirent64 *d;
union
{
struct dirent64 d;
char room [offsetof (struct dirent64, d_name[0]) + NAME_MAX + 1];
}
direntbuf;
char *objdir_copy1;
char *objdir_copy2;
char *buf;
int fd;
mtrace ();
if (argc < 5)
{
puts ("not enough parameters");
exit (1);
}
/* Make parameters available with nicer names. */
srcdir = argv[1];
objdir = argv[2];
common_objdir = argv[3];
progpath = argv[4];
/* First test the current source dir. We cannot really compare the
result of `getpwd' with the srcdir string but we have other means. */
if (stat64 (".", &st1) < 0)
{
printf ("cannot stat starting directory: %m\n");
exit (1);
}
if (chdir (srcdir) < 0)
{
printf ("cannot change to source directory: %m\n");
exit (1);
}
if (stat64 (".", &st2) < 0)
{
printf ("cannot stat source directory: %m\n");
exit (1);
}
/* The two last stat64 calls better were for the same directory. */
if (st1.st_dev != st2.st_dev || st1.st_ino != st2.st_ino)
{
printf ("stat of source directory failed: (%lld,%lld) vs (%lld,%lld)\n",
(long long int) st1.st_dev, (long long int) st1.st_ino,
(long long int) st2.st_dev, (long long int) st2.st_ino);
exit (1);
}
/* Change to the object directory. */
if (chdir (objdir) < 0)
{
printf ("cannot change to object directory: %m\n");
exit (1);
}
if (stat64 (".", &st1) < 0)
{
printf ("cannot stat object directory: %m\n");
exit (1);
}
/* Is this the same we get as with the full path? */
if (stat64 (objdir, &st2) < 0)
{
printf ("cannot stat object directory with full path: %m\n");
exit (1);
}
if (st1.st_dev != st2.st_dev || st1.st_ino != st2.st_ino)
{
printf ("stat of object directory failed: (%lld,%lld) vs (%lld,%lld)\n",
(long long int) st1.st_dev, (long long int) st1.st_ino,
(long long int) st2.st_dev, (long long int) st2.st_ino);
exit (1);
}
objdir_copy1 = getcwd (NULL, 0);
if (objdir_copy1 == NULL)
{
printf ("cannot get current directory name for object directory: %m\n");
result = 1;
}
/* First test: this directory must include our program. */
if (stat64 (progpath, &st2) < 0)
{
printf ("cannot stat program: %m\n");
exit (1);
}
dir1 = opendir (".");
if (dir1 == NULL)
{
printf ("cannot open object directory: %m\n");
exit (1);
}
while ((d = readdir64 (dir1)) != NULL)
{
if (d->d_type != DT_UNKNOWN && d->d_type != DT_REG)
continue;
if (d->d_ino == st2.st_ino)
{
/* Might be it. Test the device. We could use the st_dev
element from st1 but what the heck, do more testing. */
if (stat64 (d->d_name, &st3) < 0)
{
printf ("cannot stat entry from readdir: %m\n");
result = 1;
d = NULL;
break;
}
if (st3.st_dev == st2.st_dev)
break;
}
}
if (d == NULL)
{
puts ("haven't found program in object directory");
result = 1;
}
/* We leave dir1 open. */
/* Stat using file descriptor. */
if (fstat64 (dirfd (dir1), &st2) < 0)
{
printf ("cannot fstat object directory: %m\n");
result = 1;
}
if (st1.st_dev != st2.st_dev || st1.st_ino != st2.st_ino)
{
printf ("fstat of object directory failed: (%lld,%lld) vs (%lld,%lld)\n",
(long long int) st1.st_dev, (long long int) st1.st_ino,
(long long int) st2.st_dev, (long long int) st2.st_ino);
exit (1);
}
if (chdir ("..") < 0)
{
printf ("cannot go to common object directory with \"..\": %m\n");
exit (1);
}
if (stat64 (".", &st1) < 0)
{
printf ("cannot stat common object directory: %m\n");
exit (1);
}
/* Is this the same we get as with the full path? */
if (stat64 (common_objdir, &st2) < 0)
{
printf ("cannot stat common object directory with full path: %m\n");
exit (1);
}
if (st1.st_dev != st2.st_dev || st1.st_ino != st2.st_ino)
{
printf ("stat of object directory failed: (%lld,%lld) vs (%lld,%lld)\n",
(long long int) st1.st_dev, (long long int) st1.st_ino,
(long long int) st2.st_dev, (long long int) st2.st_ino);
exit (1);
}
/* Stat using file descriptor. */
if (fstat64 (dirfd (dir1), &st2) < 0)
{
printf ("cannot fstat object directory: %m\n");
result = 1;
}
dir2 = opendir (common_objdir);
if (dir2 == NULL)
{
printf ("cannot open common object directory: %m\n");
exit (1);
}
while ((d = readdir64 (dir2)) != NULL)
{
if (d->d_type != DT_UNKNOWN && d->d_type != DT_DIR)
continue;
if (d->d_ino == st2.st_ino)
{
/* Might be it. Test the device. We could use the st_dev
element from st1 but what the heck, do more testing. */
if (stat64 (d->d_name, &st3) < 0)
{
printf ("cannot stat entry from readdir: %m\n");
result = 1;
d = NULL;
break;
}
if (st3.st_dev == st2.st_dev)
break;
}
}
/* This better should be the object directory again. */
if (fchdir (dirfd (dir1)) < 0)
{
printf ("cannot fchdir to object directory: %m\n");
exit (1);
}
objdir_copy2 = getcwd (NULL, 0);
if (objdir_copy2 == NULL)
{
printf ("cannot get current directory name for object directory: %m\n");
result = 1;
}
if (strcmp (objdir_copy1, objdir_copy2) != 0)
{
puts ("getcwd returned a different string the second time");
result = 1;
}
/* This better should be the common object directory again. */
if (fchdir (dirfd (dir2)) < 0)
{
printf ("cannot fchdir to common object directory: %m\n");
exit (1);
}
if (stat64 (".", &st2) < 0)
{
printf ("cannot stat common object directory: %m\n");
exit (1);
}
if (st1.st_dev != st2.st_dev || st1.st_ino != st2.st_ino)
{
printf ("stat of object directory failed: (%lld,%lld) vs (%lld,%lld)\n",
(long long int) st1.st_dev, (long long int) st1.st_ino,
(long long int) st2.st_dev, (long long int) st2.st_ino);
exit (1);
}
buf = (char *) malloc (strlen (objdir_copy1) + 1 + sizeof "tst-dir.XXXXXX");
if (buf == NULL)
{
printf ("cannot allocate buffer: %m");
exit (1);
}
stpcpy (stpcpy (stpcpy (buf, objdir_copy1), "/"), "tst-dir.XXXXXX");
if (mkdtemp (buf) == NULL)
{
printf ("cannot create test directory in object directory: %m\n");
exit (1);
}
if (stat64 (buf, &st1) < 0)
{
printf ("cannot stat new directory \"%s\": %m\n", buf);
exit (1);
}
if (chmod (buf, 0700) < 0)
{
printf ("cannot change mode of new directory: %m\n");
exit (1);
}
/* The test below covers the deprecated readdir64_r function. */
DIAG_PUSH_NEEDS_COMMENT;
DIAG_IGNORE_NEEDS_COMMENT (4.9, "-Wdeprecated-declarations");
/* Try to find the new directory. */
rewinddir (dir1);
while (readdir64_r (dir1, &direntbuf.d, &d) == 0 && d != NULL)
{
if (d->d_type != DT_UNKNOWN && d->d_type != DT_DIR)
continue;
if (d->d_ino == st1.st_ino)
{
/* Might be it. Test the device. We could use the st_dev
element from st1 but what the heck, do more testing. */
size_t len = strlen (objdir) + 1 + _D_EXACT_NAMLEN (d) + 1;
char tmpbuf[len];
stpcpy (stpcpy (stpcpy (tmpbuf, objdir), "/"), d->d_name);
if (stat64 (tmpbuf, &st3) < 0)
{
printf ("cannot stat entry from readdir: %m\n");
result = 1;
d = NULL;
break;
}
if (st3.st_dev == st2.st_dev
&& strcmp (d->d_name, buf + strlen (buf) - 14) == 0)
break;
}
}
DIAG_POP_NEEDS_COMMENT;
if (d == NULL)
{
printf ("haven't found new directory \"%s\"\n", buf);
exit (1);
}
if (closedir (dir2) < 0)
{
printf ("closing dir2 failed: %m\n");
result = 1;
}
if (chdir (buf) < 0)
{
printf ("cannot change to new directory: %m\n");
exit (1);
}
dir2 = opendir (buf);
if (dir2 == NULL)
{
printf ("cannot open new directory: %m\n");
exit (1);
}
if (fstat64 (dirfd (dir2), &st2) < 0)
{
printf ("cannot fstat new directory \"%s\": %m\n", buf);
exit (1);
}
if (st1.st_dev != st2.st_dev || st1.st_ino != st2.st_ino)
{
printf ("stat of new directory failed: (%lld,%lld) vs (%lld,%lld)\n",
(long long int) st1.st_dev, (long long int) st1.st_ino,
(long long int) st2.st_dev, (long long int) st2.st_ino);
exit (1);
}
if (mkdir ("another-dir", 0777) < 0)
{
printf ("cannot create \"another-dir\": %m\n");
exit (1);
}
fd = open ("and-a-file", O_RDWR | O_CREAT | O_EXCL, 0666);
if (fd == -1)
{
printf ("cannot create \"and-a-file\": %m\n");
exit (1);
}
close (fd);
/* Some tests about error reporting. */
errno = 0;
if (chdir ("and-a-file") >= 0)
{
printf ("chdir to \"and-a-file\" succeeded\n");
exit (1);
}
if (errno != ENOTDIR)
{
printf ("chdir to \"and-a-file\" didn't set correct error\n");
result = 1;
}
errno = 0;
if (chdir ("and-a-file/..") >= 0)
{
printf ("chdir to \"and-a-file/..\" succeeded\n");
exit (1);
}
if (errno != ENOTDIR)
{
printf ("chdir to \"and-a-file/..\" didn't set correct error\n");
result = 1;
}
errno = 0;
if (chdir ("another-dir/../and-a-file") >= 0)
{
printf ("chdir to \"another-dir/../and-a-file\" succeeded\n");
exit (1);
}
if (errno != ENOTDIR)
{
printf ("chdir to \"another-dir/../and-a-file\" didn't set correct error\n");
result = 1;
}
/* The test below covers the deprecated readdir64_r function. */
DIAG_PUSH_NEEDS_COMMENT;
DIAG_IGNORE_NEEDS_COMMENT (4.9, "-Wdeprecated-declarations");
/* We now should have a directory and a file in the new directory. */
rewinddir (dir2);
while (readdir64_r (dir2, &direntbuf.d, &d) == 0 && d != NULL)
{
if (strcmp (d->d_name, ".") == 0
|| strcmp (d->d_name, "..") == 0
|| strcmp (d->d_name, "another-dir") == 0)
{
if (d->d_type != DT_UNKNOWN && d->d_type != DT_DIR)
{
printf ("d_type for \"%s\" is wrong\n", d->d_name);
result = 1;
}
if (stat64 (d->d_name, &st3) < 0)
{
printf ("cannot stat \"%s\" is wrong\n", d->d_name);
result = 1;
}
else if (! S_ISDIR (st3.st_mode))
{
printf ("\"%s\" is no directory\n", d->d_name);
result = 1;
}
}
else if (strcmp (d->d_name, "and-a-file") == 0)
{
if (d->d_type != DT_UNKNOWN && d->d_type != DT_REG)
{
printf ("d_type for \"%s\" is wrong\n", d->d_name);
result = 1;
}
if (stat64 (d->d_name, &st3) < 0)
{
printf ("cannot stat \"%s\" is wrong\n", d->d_name);
result = 1;
}
else if (! S_ISREG (st3.st_mode))
{
printf ("\"%s\" is no regular file\n", d->d_name);
result = 1;
}
}
else
{
printf ("unexpected directory entry \"%s\"\n", d->d_name);
result = 1;
}
}
DIAG_POP_NEEDS_COMMENT;
if (stat64 ("does-not-exist", &st1) >= 0)
{
puts ("stat for unexisting file did not fail");
result = 1;
}
/* Free all resources. */
if (closedir (dir1) < 0)
{
printf ("closing dir1 failed: %m\n");
result = 1;
}
if (closedir (dir2) < 0)
{
printf ("second closing dir2 failed: %m\n");
result = 1;
}
if (rmdir ("another-dir") < 0)
{
printf ("cannot remove \"another-dir\": %m\n");
result = 1;
}
if (unlink ("and-a-file") < 0)
{
printf ("cannot remove \"and-a-file\": %m\n");
result = 1;
}
/* One more test before we leave: mkdir() is supposed to fail with
EEXIST if the named file is a symlink. */
if (symlink ("a-symlink", "a-symlink") != 0)
{
printf ("cannot create symlink \"a-symlink\": %m\n");
result = 1;
}
else
{
if (mkdir ("a-symlink", 0666) == 0)
{
puts ("can make directory \"a-symlink\"");
result = 1;
}
else if (errno != EEXIST)
{
puts ("mkdir(\"a-symlink\") does not fail with EEXIST\n");
result = 1;
}
if (unlink ("a-symlink") < 0)
{
printf ("cannot unlink \"a-symlink\": %m\n");
result = 1;
}
}
if (chdir (srcdir) < 0)
{
printf ("cannot change back to source directory: %m\n");
exit (1);
}
if (rmdir (buf) < 0)
{
printf ("cannot remove \"%s\": %m\n", buf);
result = 1;
}
free (objdir_copy1);
free (objdir_copy2);
if (result == 0)
puts ("all OK");
return result;
}