mirror of
https://sourceware.org/git/glibc.git
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4484b9e296
References remain in io/fts.c, io/ftw.c, posix/glob.c, sysdeps/posix/getcwd.c. These files are (potentially) externally shared.
573 lines
14 KiB
C
573 lines
14 KiB
C
/* Copyright (C) 2000-2017 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Ulrich Drepper <drepper@redhat.com>, 2000.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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#include <dirent.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <mcheck.h>
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#include <stddef.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <sys/stat.h>
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#include <libc-diag.h>
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/* We expect four arguments:
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- source directory name
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- object directory
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- common object directory
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- the program name with path
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*/
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int
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main (int argc, char *argv[])
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{
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const char *srcdir;
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const char *objdir;
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const char *common_objdir;
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const char *progpath;
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struct stat64 st1;
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struct stat64 st2;
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struct stat64 st3;
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DIR *dir1;
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DIR *dir2;
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int result = 0;
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struct dirent64 *d;
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union
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{
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struct dirent64 d;
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char room [offsetof (struct dirent64, d_name[0]) + NAME_MAX + 1];
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}
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direntbuf;
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char *objdir_copy1;
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char *objdir_copy2;
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char *buf;
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int fd;
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mtrace ();
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if (argc < 5)
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{
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puts ("not enough parameters");
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exit (1);
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}
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/* Make parameters available with nicer names. */
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srcdir = argv[1];
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objdir = argv[2];
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common_objdir = argv[3];
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progpath = argv[4];
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/* First test the current source dir. We cannot really compare the
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result of `getpwd' with the srcdir string but we have other means. */
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if (stat64 (".", &st1) < 0)
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{
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printf ("cannot stat starting directory: %m\n");
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exit (1);
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}
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if (chdir (srcdir) < 0)
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{
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printf ("cannot change to source directory: %m\n");
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exit (1);
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}
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if (stat64 (".", &st2) < 0)
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{
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printf ("cannot stat source directory: %m\n");
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exit (1);
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}
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/* The two last stat64 calls better were for the same directory. */
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if (st1.st_dev != st2.st_dev || st1.st_ino != st2.st_ino)
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{
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printf ("stat of source directory failed: (%lld,%lld) vs (%lld,%lld)\n",
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(long long int) st1.st_dev, (long long int) st1.st_ino,
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(long long int) st2.st_dev, (long long int) st2.st_ino);
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exit (1);
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}
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/* Change to the object directory. */
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if (chdir (objdir) < 0)
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{
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printf ("cannot change to object directory: %m\n");
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exit (1);
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}
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if (stat64 (".", &st1) < 0)
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{
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printf ("cannot stat object directory: %m\n");
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exit (1);
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}
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/* Is this the same we get as with the full path? */
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if (stat64 (objdir, &st2) < 0)
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{
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printf ("cannot stat object directory with full path: %m\n");
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exit (1);
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}
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if (st1.st_dev != st2.st_dev || st1.st_ino != st2.st_ino)
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{
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printf ("stat of object directory failed: (%lld,%lld) vs (%lld,%lld)\n",
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(long long int) st1.st_dev, (long long int) st1.st_ino,
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(long long int) st2.st_dev, (long long int) st2.st_ino);
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exit (1);
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}
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objdir_copy1 = getcwd (NULL, 0);
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if (objdir_copy1 == NULL)
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{
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printf ("cannot get current directory name for object directory: %m\n");
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result = 1;
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}
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/* First test: this directory must include our program. */
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if (stat64 (progpath, &st2) < 0)
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{
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printf ("cannot stat program: %m\n");
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exit (1);
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}
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dir1 = opendir (".");
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if (dir1 == NULL)
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{
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printf ("cannot open object directory: %m\n");
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exit (1);
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}
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while ((d = readdir64 (dir1)) != NULL)
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{
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if (d->d_type != DT_UNKNOWN && d->d_type != DT_REG)
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continue;
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if (d->d_ino == st2.st_ino)
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{
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/* Might be it. Test the device. We could use the st_dev
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element from st1 but what the heck, do more testing. */
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if (stat64 (d->d_name, &st3) < 0)
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{
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printf ("cannot stat entry from readdir: %m\n");
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result = 1;
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d = NULL;
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break;
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}
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if (st3.st_dev == st2.st_dev)
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break;
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}
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}
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if (d == NULL)
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{
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puts ("haven't found program in object directory");
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result = 1;
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}
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/* We leave dir1 open. */
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/* Stat using file descriptor. */
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if (fstat64 (dirfd (dir1), &st2) < 0)
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{
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printf ("cannot fstat object directory: %m\n");
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result = 1;
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}
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if (st1.st_dev != st2.st_dev || st1.st_ino != st2.st_ino)
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{
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printf ("fstat of object directory failed: (%lld,%lld) vs (%lld,%lld)\n",
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(long long int) st1.st_dev, (long long int) st1.st_ino,
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(long long int) st2.st_dev, (long long int) st2.st_ino);
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exit (1);
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}
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if (chdir ("..") < 0)
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{
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printf ("cannot go to common object directory with \"..\": %m\n");
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exit (1);
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}
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if (stat64 (".", &st1) < 0)
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{
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printf ("cannot stat common object directory: %m\n");
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exit (1);
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}
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/* Is this the same we get as with the full path? */
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if (stat64 (common_objdir, &st2) < 0)
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{
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printf ("cannot stat common object directory with full path: %m\n");
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exit (1);
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}
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if (st1.st_dev != st2.st_dev || st1.st_ino != st2.st_ino)
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{
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printf ("stat of object directory failed: (%lld,%lld) vs (%lld,%lld)\n",
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(long long int) st1.st_dev, (long long int) st1.st_ino,
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(long long int) st2.st_dev, (long long int) st2.st_ino);
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exit (1);
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}
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/* Stat using file descriptor. */
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if (fstat64 (dirfd (dir1), &st2) < 0)
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{
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printf ("cannot fstat object directory: %m\n");
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result = 1;
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}
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dir2 = opendir (common_objdir);
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if (dir2 == NULL)
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{
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printf ("cannot open common object directory: %m\n");
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exit (1);
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}
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while ((d = readdir64 (dir2)) != NULL)
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{
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if (d->d_type != DT_UNKNOWN && d->d_type != DT_DIR)
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continue;
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if (d->d_ino == st2.st_ino)
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{
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/* Might be it. Test the device. We could use the st_dev
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element from st1 but what the heck, do more testing. */
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if (stat64 (d->d_name, &st3) < 0)
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{
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printf ("cannot stat entry from readdir: %m\n");
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result = 1;
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d = NULL;
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break;
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}
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if (st3.st_dev == st2.st_dev)
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break;
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}
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}
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/* This better should be the object directory again. */
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if (fchdir (dirfd (dir1)) < 0)
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{
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printf ("cannot fchdir to object directory: %m\n");
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exit (1);
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}
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objdir_copy2 = getcwd (NULL, 0);
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if (objdir_copy2 == NULL)
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{
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printf ("cannot get current directory name for object directory: %m\n");
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result = 1;
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}
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if (strcmp (objdir_copy1, objdir_copy2) != 0)
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{
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puts ("getcwd returned a different string the second time");
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result = 1;
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}
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/* This better should be the common object directory again. */
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if (fchdir (dirfd (dir2)) < 0)
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{
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printf ("cannot fchdir to common object directory: %m\n");
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exit (1);
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}
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if (stat64 (".", &st2) < 0)
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{
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printf ("cannot stat common object directory: %m\n");
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exit (1);
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}
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if (st1.st_dev != st2.st_dev || st1.st_ino != st2.st_ino)
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{
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printf ("stat of object directory failed: (%lld,%lld) vs (%lld,%lld)\n",
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(long long int) st1.st_dev, (long long int) st1.st_ino,
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(long long int) st2.st_dev, (long long int) st2.st_ino);
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exit (1);
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}
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buf = (char *) malloc (strlen (objdir_copy1) + 1 + sizeof "tst-dir.XXXXXX");
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if (buf == NULL)
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{
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printf ("cannot allocate buffer: %m");
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exit (1);
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}
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stpcpy (stpcpy (stpcpy (buf, objdir_copy1), "/"), "tst-dir.XXXXXX");
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if (mkdtemp (buf) == NULL)
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{
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printf ("cannot create test directory in object directory: %m\n");
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exit (1);
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}
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if (stat64 (buf, &st1) < 0)
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{
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printf ("cannot stat new directory \"%s\": %m\n", buf);
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exit (1);
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}
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if (chmod (buf, 0700) < 0)
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{
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printf ("cannot change mode of new directory: %m\n");
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exit (1);
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}
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/* The test below covers the deprecated readdir64_r function. */
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DIAG_PUSH_NEEDS_COMMENT;
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DIAG_IGNORE_NEEDS_COMMENT (4.9, "-Wdeprecated-declarations");
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/* Try to find the new directory. */
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rewinddir (dir1);
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while (readdir64_r (dir1, &direntbuf.d, &d) == 0 && d != NULL)
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{
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if (d->d_type != DT_UNKNOWN && d->d_type != DT_DIR)
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continue;
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if (d->d_ino == st1.st_ino)
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{
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/* Might be it. Test the device. We could use the st_dev
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element from st1 but what the heck, do more testing. */
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size_t len = strlen (objdir) + 1 + _D_EXACT_NAMLEN (d) + 1;
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char tmpbuf[len];
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stpcpy (stpcpy (stpcpy (tmpbuf, objdir), "/"), d->d_name);
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if (stat64 (tmpbuf, &st3) < 0)
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{
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printf ("cannot stat entry from readdir: %m\n");
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result = 1;
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d = NULL;
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break;
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}
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if (st3.st_dev == st2.st_dev
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&& strcmp (d->d_name, buf + strlen (buf) - 14) == 0)
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break;
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}
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}
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DIAG_POP_NEEDS_COMMENT;
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if (d == NULL)
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{
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printf ("haven't found new directory \"%s\"\n", buf);
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exit (1);
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}
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if (closedir (dir2) < 0)
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{
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printf ("closing dir2 failed: %m\n");
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result = 1;
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}
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if (chdir (buf) < 0)
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{
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printf ("cannot change to new directory: %m\n");
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exit (1);
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}
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dir2 = opendir (buf);
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if (dir2 == NULL)
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{
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printf ("cannot open new directory: %m\n");
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exit (1);
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}
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if (fstat64 (dirfd (dir2), &st2) < 0)
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{
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printf ("cannot fstat new directory \"%s\": %m\n", buf);
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exit (1);
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}
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if (st1.st_dev != st2.st_dev || st1.st_ino != st2.st_ino)
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{
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printf ("stat of new directory failed: (%lld,%lld) vs (%lld,%lld)\n",
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(long long int) st1.st_dev, (long long int) st1.st_ino,
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(long long int) st2.st_dev, (long long int) st2.st_ino);
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exit (1);
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}
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if (mkdir ("another-dir", 0777) < 0)
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{
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printf ("cannot create \"another-dir\": %m\n");
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exit (1);
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}
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fd = open ("and-a-file", O_RDWR | O_CREAT | O_EXCL, 0666);
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if (fd == -1)
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{
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printf ("cannot create \"and-a-file\": %m\n");
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exit (1);
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}
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close (fd);
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/* Some tests about error reporting. */
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errno = 0;
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if (chdir ("and-a-file") >= 0)
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{
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printf ("chdir to \"and-a-file\" succeeded\n");
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exit (1);
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}
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if (errno != ENOTDIR)
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{
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printf ("chdir to \"and-a-file\" didn't set correct error\n");
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result = 1;
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}
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errno = 0;
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if (chdir ("and-a-file/..") >= 0)
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{
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printf ("chdir to \"and-a-file/..\" succeeded\n");
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exit (1);
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}
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if (errno != ENOTDIR)
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{
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printf ("chdir to \"and-a-file/..\" didn't set correct error\n");
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result = 1;
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}
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errno = 0;
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if (chdir ("another-dir/../and-a-file") >= 0)
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{
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printf ("chdir to \"another-dir/../and-a-file\" succeeded\n");
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exit (1);
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}
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if (errno != ENOTDIR)
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{
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printf ("chdir to \"another-dir/../and-a-file\" didn't set correct error\n");
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result = 1;
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}
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/* The test below covers the deprecated readdir64_r function. */
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DIAG_PUSH_NEEDS_COMMENT;
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DIAG_IGNORE_NEEDS_COMMENT (4.9, "-Wdeprecated-declarations");
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/* We now should have a directory and a file in the new directory. */
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rewinddir (dir2);
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while (readdir64_r (dir2, &direntbuf.d, &d) == 0 && d != NULL)
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{
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if (strcmp (d->d_name, ".") == 0
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|| strcmp (d->d_name, "..") == 0
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|| strcmp (d->d_name, "another-dir") == 0)
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{
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if (d->d_type != DT_UNKNOWN && d->d_type != DT_DIR)
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{
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printf ("d_type for \"%s\" is wrong\n", d->d_name);
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result = 1;
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}
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if (stat64 (d->d_name, &st3) < 0)
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{
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printf ("cannot stat \"%s\" is wrong\n", d->d_name);
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result = 1;
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}
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else if (! S_ISDIR (st3.st_mode))
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{
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printf ("\"%s\" is no directory\n", d->d_name);
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result = 1;
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}
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}
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else if (strcmp (d->d_name, "and-a-file") == 0)
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{
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if (d->d_type != DT_UNKNOWN && d->d_type != DT_REG)
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{
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printf ("d_type for \"%s\" is wrong\n", d->d_name);
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result = 1;
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}
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if (stat64 (d->d_name, &st3) < 0)
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{
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printf ("cannot stat \"%s\" is wrong\n", d->d_name);
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result = 1;
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}
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else if (! S_ISREG (st3.st_mode))
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{
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printf ("\"%s\" is no regular file\n", d->d_name);
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result = 1;
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}
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}
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else
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{
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printf ("unexpected directory entry \"%s\"\n", d->d_name);
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result = 1;
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}
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}
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DIAG_POP_NEEDS_COMMENT;
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if (stat64 ("does-not-exist", &st1) >= 0)
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{
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puts ("stat for unexisting file did not fail");
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result = 1;
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}
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/* Free all resources. */
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if (closedir (dir1) < 0)
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{
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printf ("closing dir1 failed: %m\n");
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result = 1;
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}
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if (closedir (dir2) < 0)
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{
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printf ("second closing dir2 failed: %m\n");
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result = 1;
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}
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if (rmdir ("another-dir") < 0)
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{
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printf ("cannot remove \"another-dir\": %m\n");
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result = 1;
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}
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if (unlink ("and-a-file") < 0)
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{
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printf ("cannot remove \"and-a-file\": %m\n");
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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;
|
|
}
|