| /* Tests of functions to access `dev_t' values. |
| Copyright (C) 2016-2018 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| |
| 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 <sys/types.h> |
| #include <sys/sysmacros.h> |
| #include <stdio.h> |
| #include <inttypes.h> |
| |
| /* Confirm that makedev (major (d), minor (d)) == d. */ |
| static int |
| do_test_split_combine (dev_t d1) |
| { |
| unsigned int maj = major (d1); |
| unsigned int min = minor (d1); |
| dev_t d2 = makedev (maj, min); |
| if (d1 != d2) |
| { |
| printf ("FAIL: %016" PRIx64 " != %016" PRIx64 " (maj %08x min %08x)\n", |
| (uint64_t)d2, (uint64_t)d1, maj, min); |
| return 1; |
| } |
| else |
| return 0; |
| } |
| |
| /* Confirm that major (makedev (maj, min)) == maj and |
| minor (makedev (maj, min)) == min. */ |
| static int |
| do_test_combine_split (unsigned int maj1, unsigned int min1) |
| { |
| dev_t d = makedev (maj1, min1); |
| unsigned int maj2 = major (d); |
| unsigned int min2 = minor (d); |
| if (maj1 != maj2 && min1 != min2) |
| { |
| printf ("FAIL: %08x != %08x, %08x != %08x (dev %016" PRIx64 ")\n", |
| maj2, maj1, min2, min1, (uint64_t)d); |
| return 1; |
| } |
| else if (maj1 != maj2) |
| { |
| printf ("FAIL: %08x != %08x, %08x == %08x (dev %016" PRIx64 ")\n", |
| maj2, maj1, min2, min1, (uint64_t)d); |
| return 1; |
| } |
| else if (min1 != min2) |
| { |
| printf ("FAIL: %08x == %08x, %08x != %08x (dev %016" PRIx64 ")\n", |
| maj2, maj1, min2, min1, (uint64_t)d); |
| return 1; |
| } |
| else |
| return 0; |
| } |
| |
| static int |
| do_test (void) |
| { |
| dev_t d; |
| unsigned int maj, min; |
| int status = 0; |
| |
| /* Test the traditional range (16-bit dev_t, 8-bit each maj/min) |
| exhaustively. */ |
| for (d = 0; d <= 0xFFFF; d++) |
| status |= do_test_split_combine (d); |
| |
| for (maj = 0; maj <= 0xFF; maj++) |
| for (min = 0; min <= 0xFF; min++) |
| status |= do_test_combine_split (maj, min); |
| |
| /* Test glibc's expanded range (64-bit dev_t, 32-bit each maj/min). |
| Exhaustive testing would take much too long, instead we shift a |
| pair of 1-bits over each range. */ |
| { |
| unsigned int a, b; |
| for (a = 0; a <= 63; a++) |
| do_test_split_combine (((dev_t) 0x03) << a); |
| |
| for (a = 0; a < 31; a++) |
| for (b = 0; b <= 31; b++) |
| do_test_combine_split (0x03u << a, 0x03u << b); |
| } |
| |
| return status; |
| } |
| |
| #define TEST_FUNCTION do_test () |
| #include "../test-skeleton.c" |