Let's see whether some kernel confuses the notion of "file descriptor"
with the notion of "file descriptor or AT_FDCWD". A little bit of
"let's try to provoke undefined behaviour internally" mindset... 😉
2024-09-03 Bruno Haible <br...@clisp.org>
tests: Strenghten tests with invalid file descriptor.
* tests/test-close.c: Include <fcntl.h>.
(main): Check that AT_FDCWD is recognized as an invalid file descriptor.
* tests/test-dup.c: Include <fcntl.h>.
(main): Check that AT_FDCWD is recognized as an invalid file descriptor.
* tests/test-unlockpt.c: Include <fcntl.h>.
(main): Check that AT_FDCWD is recognized as an invalid file descriptor.
* tests/test-fchdir.c (main): Likewise.
* tests/test-fdatasync.c (main): Likewise.
* tests/test-fdopendir.c (main): Likewise.
* tests/test-fsync.c (main): Likewise.
* tests/test-isatty.c (main): Likewise.
diff --git a/tests/test-close.c b/tests/test-close.c
index b796e0d200..ca2c21bfe2 100644
--- a/tests/test-close.c
+++ b/tests/test-close.c
@@ -22,6 +22,7 @@
SIGNATURE_CHECK (close, int, (int));
#include <errno.h>
+#include <fcntl.h>
#include "macros.h"
@@ -40,6 +41,13 @@ main (void)
ASSERT (close (99) == -1);
ASSERT (errno == EBADF);
}
+#ifdef AT_FDCWD
+ {
+ errno = 0;
+ ASSERT (close (AT_FDCWD) == -1);
+ ASSERT (errno == EBADF);
+ }
+#endif
return test_exit_status;
}
diff --git a/tests/test-dup.c b/tests/test-dup.c
index bf3f519bb8..884fbc605c 100644
--- a/tests/test-dup.c
+++ b/tests/test-dup.c
@@ -22,6 +22,7 @@
SIGNATURE_CHECK (dup, int, (int));
#include <errno.h>
+#include <fcntl.h>
#include "macros.h"
@@ -40,6 +41,13 @@ main (void)
ASSERT (dup (99) == -1);
ASSERT (errno == EBADF);
}
+#ifdef AT_FDCWD
+ {
+ errno = 0;
+ ASSERT (dup (AT_FDCWD) == -1);
+ ASSERT (errno == EBADF);
+ }
+#endif
return test_exit_status;
}
diff --git a/tests/test-fchdir.c b/tests/test-fchdir.c
index 692ab5194c..0eba209c47 100644
--- a/tests/test-fchdir.c
+++ b/tests/test-fchdir.c
@@ -56,6 +56,13 @@ main (void)
ASSERT (fchdir (99) == -1);
ASSERT (errno == EBADF);
}
+#ifdef FD_ATCWD
+ {
+ errno = 0;
+ ASSERT (fchdir (FD_ATCWD) == -1);
+ ASSERT (errno == EBADF);
+ }
+#endif
/* Check for other failure cases. */
{
diff --git a/tests/test-fdatasync.c b/tests/test-fdatasync.c
index 3d55a7105b..691a198a99 100644
--- a/tests/test-fdatasync.c
+++ b/tests/test-fdatasync.c
@@ -56,6 +56,13 @@ main (void)
ASSERT (fdatasync (99) == -1);
ASSERT (errno == EBADF);
}
+#ifdef AT_FDCWD
+ {
+ errno = 0;
+ ASSERT (fdatasync (AT_FDCWD) == -1);
+ ASSERT (errno == EBADF);
+ }
+#endif
fd = open (file, O_WRONLY|O_CREAT|O_TRUNC, 0644);
ASSERT (0 <= fd);
diff --git a/tests/test-fdopendir.c b/tests/test-fdopendir.c
index 5dd8a4a967..3430d03bad 100644
--- a/tests/test-fdopendir.c
+++ b/tests/test-fdopendir.c
@@ -56,6 +56,13 @@ main ()
ASSERT (fdopendir (99) == NULL);
ASSERT (errno == EBADF);
}
+#ifdef AT_FDCWD
+ {
+ errno = 0;
+ ASSERT (fdopendir (AT_FDCWD) == NULL);
+ ASSERT (errno == EBADF);
+ }
+#endif
/* This should work. */
fd = open (".", O_RDONLY);
diff --git a/tests/test-fsync.c b/tests/test-fsync.c
index c28a5cc6ab..7e680c274a 100644
--- a/tests/test-fsync.c
+++ b/tests/test-fsync.c
@@ -56,6 +56,13 @@ main (void)
ASSERT (fsync (99) == -1);
ASSERT (errno == EBADF);
}
+#ifdef AT_FDCWD
+ {
+ errno = 0;
+ ASSERT (fsync (AT_FDCWD) == -1);
+ ASSERT (errno == EBADF);
+ }
+#endif
fd = open (file, O_WRONLY|O_CREAT|O_TRUNC, 0644);
ASSERT (0 <= fd);
diff --git a/tests/test-isatty.c b/tests/test-isatty.c
index 1c7d6d8cd9..d844c62615 100644
--- a/tests/test-isatty.c
+++ b/tests/test-isatty.c
@@ -56,6 +56,15 @@ main (void)
|| errno == 0 /* seen on IRIX 6.5, Solaris 10 */
);
}
+#ifdef AT_FDCWD
+ {
+ errno = 0;
+ ASSERT (isatty (AT_FDCWD) == 0);
+ ASSERT (errno == EBADF
+ || errno == 0 /* seen on IRIX 6.5, Solaris 10 */
+ );
+ }
+#endif
/* Test behaviour for regular files. */
{
diff --git a/tests/test-unlockpt.c b/tests/test-unlockpt.c
index e69f72db97..8fbd36cf69 100644
--- a/tests/test-unlockpt.c
+++ b/tests/test-unlockpt.c
@@ -22,6 +22,7 @@
SIGNATURE_CHECK (unlockpt, int, (int));
#include <errno.h>
+#include <fcntl.h>
#include <unistd.h>
#include "macros.h"
@@ -46,6 +47,15 @@ main (void)
|| errno == EINVAL /* seen on FreeBSD 6.4 */
);
}
+# ifdef AT_FDCWD
+ {
+ errno = 0;
+ ASSERT (unlockpt (AT_FDCWD) == -1);
+ ASSERT (errno == EBADF
+ || errno == EINVAL /* seen on FreeBSD 6.4 */
+ );
+ }
+# endif
#endif
return test_exit_status;
