io: Fix record locking contants on 32 bit arch with 64 bit default time_t (BZ#30477)

For architecture with default 64 bit time_t support, the kernel
does not provide LFS and non-LFS values for F_GETLK, F_GETLK, and
F_GETLK (the default value used for 64 bit architecture are used).

This is might be considered an ABI break, but the currenct exported
values is bogus anyway.

The POSIX lockf is not affected since it is aliased to lockf64,
which already uses the LFS values.

Checked on i686-linux-gnu and the new tests on a riscv32.

Reviewed-by: Carlos O'Donell <carlos@redhat.com>

1 files changed, 34 insertions, 24 deletions

diff --git a/io/tst-lockf.c b/io/tst-lockf.c
index eda04b5417..cf8d3001c3 100644
--- a/io/tst-lockf.c
+++ b/io/tst-lockf.c
@@ -24,13 +24,23 @@
 #include <support/capture_subprocess.h>
 #include <support/check.h>
 
+#ifndef TST_LOCKFD
+# define TST_LOCKFD "tst-lockfd."
+#endif
+#ifndef LOCKF
+# define LOCKF lockf
+#endif
+#ifndef LOCKF64
+# define LOCKF64 lockf64
+#endif
+
 static char *temp_filename;
 static int temp_fd;
 
 static void
 do_prepare (int argc, char **argv)
 {
-  temp_fd = create_temp_file ("tst-lockfd.", &temp_filename);
+  temp_fd = create_temp_file (TST_LOCKFD, &temp_filename);
   TEST_VERIFY_EXIT (temp_fd != -1);
 }
 #define PREPARE do_prepare
@@ -40,22 +50,22 @@ do_test_child_lockf (void *closure)
 {
   /* Check if parent has [0, 1024) locked.  */
   TEST_COMPARE (lseek (temp_fd, 0, SEEK_SET), 0);
-  TEST_COMPARE (lockf (temp_fd, F_TLOCK, 1024), -1);
+  TEST_COMPARE (LOCKF (temp_fd, F_TLOCK, 1024), -1);
   TEST_COMPARE (errno, EAGAIN);
-  TEST_COMPARE (lockf (temp_fd, F_TEST, 1024), -1);
+  TEST_COMPARE (LOCKF (temp_fd, F_TEST, 1024), -1);
   TEST_COMPARE (errno, EACCES);
   /* Also Check if parent has last 1024 bytes locked.  */
   TEST_COMPARE (lseek (temp_fd, INT32_MAX-1024, SEEK_SET), INT32_MAX-1024);
-  TEST_COMPARE (lockf (temp_fd, F_TEST, 1024), -1);
+  TEST_COMPARE (LOCKF (temp_fd, F_TEST, 1024), -1);
 
   /* And try to lock [1024, 2048).  */
   TEST_COMPARE (lseek (temp_fd, 1024, SEEK_SET), 1024);
-  TEST_COMPARE (lockf (temp_fd, F_LOCK, 1024), 0);
+  TEST_COMPARE (LOCKF (temp_fd, F_LOCK, 1024), 0);
 
   /* Check if non-LFS interface cap access to 32-bif off_t.  */
   TEST_COMPARE (lseek64 (temp_fd, (off64_t)INT32_MAX, SEEK_SET),
 		(off64_t)INT32_MAX);
-  TEST_COMPARE (lockf64 (temp_fd, F_TEST, 1024), 0);
+  TEST_COMPARE (LOCKF64 (temp_fd, F_TEST, 1024), 0);
 }
 
 static void
@@ -63,32 +73,32 @@ do_test_child_lockf64 (void *closure)
 {
   /* Check if parent has [0, 1024) locked.  */
   TEST_COMPARE (lseek64 (temp_fd, 0, SEEK_SET), 0);
-  TEST_COMPARE (lockf64 (temp_fd, F_TLOCK, 1024), -1);
+  TEST_COMPARE (LOCKF64 (temp_fd, F_TLOCK, 1024), -1);
   TEST_COMPARE (errno, EAGAIN);
-  TEST_COMPARE (lockf64 (temp_fd, F_TEST, 1024), -1);
+  TEST_COMPARE (LOCKF64 (temp_fd, F_TEST, 1024), -1);
   TEST_COMPARE (errno, EACCES);
   /* Also Check if parent has last 1024 bytes locked.  */
   TEST_COMPARE (lseek64 (temp_fd, INT32_MAX-1024, SEEK_SET), INT32_MAX-1024);
-  TEST_COMPARE (lockf64 (temp_fd, F_TEST, 1024), -1);
+  TEST_COMPARE (LOCKF64 (temp_fd, F_TEST, 1024), -1);
 
   /* And try to lock [1024, 2048).  */
   TEST_COMPARE (lseek64 (temp_fd, 1024, SEEK_SET), 1024);
-  TEST_COMPARE (lockf64 (temp_fd, F_LOCK, 1024), 0);
+  TEST_COMPARE (LOCKF64 (temp_fd, F_LOCK, 1024), 0);
 
   /* And also [INT32_MAX, INT32_MAX+1024).  */
   {
     off64_t off = (off64_t)INT32_MAX;
     TEST_COMPARE (lseek64 (temp_fd, off, SEEK_SET), off);
-    TEST_COMPARE (lockf64 (temp_fd, F_LOCK, 1024), 0);
+    TEST_COMPARE (LOCKF64 (temp_fd, F_LOCK, 1024), 0);
   }
 
   /* Check if [INT32_MAX+1024, INT64_MAX) is locked.  */
   {
     off64_t off = (off64_t)INT32_MAX+1024;
     TEST_COMPARE (lseek64 (temp_fd, off, SEEK_SET), off);
-    TEST_COMPARE (lockf64 (temp_fd, F_TLOCK, 1024), -1);
+    TEST_COMPARE (LOCKF64 (temp_fd, F_TLOCK, 1024), -1);
     TEST_COMPARE (errno, EAGAIN);
-    TEST_COMPARE (lockf64 (temp_fd, F_TEST, 1024), -1);
+    TEST_COMPARE (LOCKF64 (temp_fd, F_TEST, 1024), -1);
     TEST_COMPARE (errno, EACCES);
   }
 }
@@ -97,38 +107,38 @@ static int
 do_test (void)
 {
   /* Basic tests to check if a lock can be obtained and checked.  */
-  TEST_COMPARE (lockf (temp_fd, F_LOCK, 1024), 0);
-  TEST_COMPARE (lockf (temp_fd, F_LOCK, INT32_MAX), 0);
-  TEST_COMPARE (lockf (temp_fd, F_TLOCK, 1024), 0);
-  TEST_COMPARE (lockf (temp_fd, F_TEST, 1024), 0);
+  TEST_COMPARE (LOCKF (temp_fd, F_LOCK, 1024), 0);
+  TEST_COMPARE (LOCKF (temp_fd, F_LOCK, INT32_MAX), 0);
+  TEST_COMPARE (LOCKF (temp_fd, F_TLOCK, 1024), 0);
+  TEST_COMPARE (LOCKF (temp_fd, F_TEST, 1024), 0);
   TEST_COMPARE (lseek (temp_fd, 1024, SEEK_SET), 1024);
-  TEST_COMPARE (lockf (temp_fd, F_ULOCK, 1024), 0);
+  TEST_COMPARE (LOCKF (temp_fd, F_ULOCK, 1024), 0);
   /* Parent process should have ([0, 1024), [2048, INT32_MAX)) ranges locked.  */
 
   {
     struct support_capture_subprocess result;
     result = support_capture_subprocess (do_test_child_lockf, NULL);
-    support_capture_subprocess_check (&result, "lockf", 0, sc_allow_none);
+    support_capture_subprocess_check (&result, "LOCKF", 0, sc_allow_none);
   }
 
   if (sizeof (off_t) != sizeof (off64_t))
     {
       /* Check if previously locked regions with LFS symbol.  */
       TEST_COMPARE (lseek (temp_fd, 0, SEEK_SET), 0);
-      TEST_COMPARE (lockf64 (temp_fd, F_LOCK, 1024), 0);
-      TEST_COMPARE (lockf64 (temp_fd, F_TLOCK, 1024), 0);
-      TEST_COMPARE (lockf64 (temp_fd, F_TEST, 1024), 0);
+      TEST_COMPARE (LOCKF64 (temp_fd, F_LOCK, 1024), 0);
+      TEST_COMPARE (LOCKF64 (temp_fd, F_TLOCK, 1024), 0);
+      TEST_COMPARE (LOCKF64 (temp_fd, F_TEST, 1024), 0);
       /* Lock region [INT32_MAX+1024, INT64_MAX).  */
       off64_t off = (off64_t)INT32_MAX + 1024;
       TEST_COMPARE (lseek64 (temp_fd, off, SEEK_SET), off);
-      TEST_COMPARE (lockf64 (temp_fd, F_LOCK, 1024), 0);
+      TEST_COMPARE (LOCKF64 (temp_fd, F_LOCK, 1024), 0);
       /* Parent process should have ([0, 1024), [2048, INT32_MAX),
 	 [INT32_MAX+1024, INT64_MAX)) ranges locked.  */
 
       {
 	struct support_capture_subprocess result;
 	result = support_capture_subprocess (do_test_child_lockf64, NULL);
-	support_capture_subprocess_check (&result, "lockf", 0, sc_allow_none);
+	support_capture_subprocess_check (&result, "LOCKF", 0, sc_allow_none);
       }
     }