483 lines
11 KiB
C
483 lines
11 KiB
C
#include <dirent.h>
|
|
#include <fcntl.h>
|
|
#include <mcheck.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
#include <sys/stat.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;
|
|
struct dirent64 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)
|
|
{
|
|
#ifdef _DIRENT_HAVE_D_TYPE
|
|
if (d->d_type != DT_UNKNOWN && d->d_type != DT_REG)
|
|
continue;
|
|
#endif
|
|
|
|
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)
|
|
{
|
|
#ifdef _DIRENT_HAVE_D_TYPE
|
|
if (d->d_type != DT_UNKNOWN && d->d_type != DT_DIR)
|
|
continue;
|
|
#endif
|
|
|
|
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);
|
|
}
|
|
|
|
/* Try to find the new directory. */
|
|
rewinddir (dir1);
|
|
while (readdir64_r (dir1, &direntbuf, &d) == 0 && d != NULL)
|
|
{
|
|
#ifdef _DIRENT_HAVE_D_TYPE
|
|
if (d->d_type != DT_UNKNOWN && d->d_type != DT_DIR)
|
|
continue;
|
|
#endif
|
|
|
|
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;
|
|
}
|
|
}
|
|
|
|
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);
|
|
|
|
/* We now should have a directory and a file in the new directory. */
|
|
rewinddir (dir2);
|
|
while (readdir64_r (dir2, &direntbuf, &d) == 0 && d != NULL)
|
|
{
|
|
if (strcmp (d->d_name, ".") == 0
|
|
|| strcmp (d->d_name, "..") == 0
|
|
|| strcmp (d->d_name, "another-dir") == 0)
|
|
{
|
|
#ifdef _DIRENT_HAVE_D_TYPE
|
|
if (d->d_type != DT_UNKNOWN && d->d_type != DT_DIR)
|
|
{
|
|
printf ("d_type for \"%s\" is wrong\n", d->d_name);
|
|
result = 1;
|
|
}
|
|
#endif
|
|
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)
|
|
{
|
|
#ifdef _DIRENT_HAVE_D_TYPE
|
|
if (d->d_type != DT_UNKNOWN && d->d_type != DT_REG)
|
|
{
|
|
printf ("d_type for \"%s\" is wrong\n", d->d_name);
|
|
result = 1;
|
|
}
|
|
#endif
|
|
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;
|
|
}
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
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;
|
|
}
|