new file mode 100644
@@ -0,0 +1,74 @@
+/* Definitions of macros to access `dev_t' values.
+ Copyright (C) 1996-2016 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/>. */
+
+#ifndef _BITS_SYSMACROS_H
+#define _BITS_SYSMACROS_H 1
+
+#ifndef _SYS_SYSMACROS_H
+# error "Never include <bits/sysmacros.h> directly; use <sys/sysmacros.h> instead."
+#endif
+
+/* dev_t in glibc is a 64-bit quantity, with 32-bit major and minor numbers.
+ Our default encoding is MMMM Mmmm mmmM MMmm, where M is a hex digit of
+ the major number and m is a hex digit of the minor number. This is
+ downward compatible with legacy systems where dev_t is 16 bits wide,
+ encoded as MMmm. It is also downward compatible with the Linux kernel,
+ which (as of 2016) uses 32-bit dev_t, encoded as mmmM MMmm.
+
+ Systems that use an incompatible encoding for dev_t should override this
+ file in the appropriate sysdeps subdirectory. */
+
+#define __SYSMACROS_DECLARE_MAJOR(DECL_TEMPL) \
+ DECL_TEMPL(unsigned int, major, (__dev_t __dev))
+
+#define __SYSMACROS_DEFINE_MAJOR(DECL_TEMPL) \
+ __SYSMACROS_DECLARE_MAJOR (DECL_TEMPL) \
+ { \
+ unsigned int __major; \
+ __major = ((__dev & (__dev_t) 0x00000000000fff00u) >> 8); \
+ __major |= ((__dev & (__dev_t) 0xfffff00000000000u) >> 32); \
+ return __major; \
+ }
+
+#define __SYSMACROS_DECLARE_MINOR(DECL_TEMPL) \
+ DECL_TEMPL(unsigned int, minor, (__dev_t __dev))
+
+#define __SYSMACROS_DEFINE_MINOR(DECL_TEMPL) \
+ __SYSMACROS_DECLARE_MINOR (DECL_TEMPL) \
+ { \
+ unsigned int __minor; \
+ __minor = ((__dev & (__dev_t) 0x00000000000000ffu) >> 0); \
+ __minor |= ((__dev & (__dev_t) 0x00000ffffff00000u) >> 12); \
+ return __minor; \
+ }
+
+#define __SYSMACROS_DECLARE_MAKEDEV(DECL_TEMPL) \
+ DECL_TEMPL(__dev_t, makedev, (unsigned int __major, unsigned int __minor))
+
+#define __SYSMACROS_DEFINE_MAKEDEV(DECL_TEMPL) \
+ __SYSMACROS_DECLARE_MAKEDEV (DECL_TEMPL) \
+ { \
+ __dev_t __dev; \
+ __dev = (((__dev_t) (__major & 0x00000fffu)) << 8); \
+ __dev |= (((__dev_t) (__major & 0xfffff000u)) << 32); \
+ __dev |= (((__dev_t) (__minor & 0x000000ffu)) << 0); \
+ __dev |= (((__dev_t) (__minor & 0xffffff00u)) << 12); \
+ return __dev; \
+ }
+
+#endif /* bits/sysmacros.h */
new file mode 100644
@@ -0,0 +1 @@
+#include <misc/sys/sysmacros.h>
@@ -34,7 +34,8 @@ headers := sys/uio.h bits/uio.h sys/ioctl.h bits/ioctls.h bits/ioctl-types.h \
regexp.h bits/select.h bits/mman.h sys/xattr.h \
syslog.h sys/syslog.h \
bits/syslog.h bits/syslog-ldbl.h bits/syslog-path.h bits/error.h \
- bits/select2.h bits/hwcap.h sys/auxv.h
+ bits/select2.h bits/hwcap.h sys/auxv.h \
+ sys/sysmacros.h bits/sysmacros.h
routines := brk sbrk sstk ioctl \
readv writev preadv preadv64 pwritev pwritev64 \
@@ -67,7 +68,7 @@ routines := brk sbrk sstk ioctl \
getloadavg getclktck \
fgetxattr flistxattr fremovexattr fsetxattr getxattr \
listxattr lgetxattr llistxattr lremovexattr lsetxattr \
- removexattr setxattr getauxval ifunc-impl-list
+ removexattr setxattr getauxval ifunc-impl-list makedev
generated += tst-error1.mtrace tst-error1-mem.out
@@ -78,7 +79,7 @@ gpl2lgpl := error.c error.h
tests := tst-dirname tst-tsearch tst-fdset tst-efgcvt tst-mntent tst-hsearch \
tst-error1 tst-pselect tst-insremque tst-mntent2 bug-hsearch1 \
tst-mntent-blank-corrupt tst-mntent-blank-passno bug18240 \
- tst-preadvwritev tst-preadvwritev64
+ tst-preadvwritev tst-preadvwritev64 tst-makedev
ifeq ($(run-built-tests),yes)
tests-special += $(objpfx)tst-error1-mem.out
endif
@@ -152,6 +152,9 @@ libc {
GLIBC_2.23 {
# SHLIB_COMPAT(GLIBC_2_0, GLIBC_2_23) used in regexp.c
}
+ GLIBC_2.24 {
+ gnu_dev_major; gnu_dev_minor; gnu_dev_makedev;
+ }
GLIBC_PRIVATE {
__madvise;
__mktemp;
new file mode 100644
@@ -0,0 +1,30 @@
+/* Definitions of functions to access `dev_t' values.
+ Copyright (C) 2003-2016 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 <features.h>
+
+#undef __USE_EXTERN_INLINES
+#define __SYSMACROS_NEED_IMPLEMENTATION
+#include <sys/sysmacros.h>
+
+#define OUT_OF_LINE_IMPL_TEMPL(rtype, name, proto) \
+ rtype gnu_dev_##name proto
+
+__SYSMACROS_DEFINE_MAJOR(OUT_OF_LINE_IMPL_TEMPL)
+__SYSMACROS_DEFINE_MINOR(OUT_OF_LINE_IMPL_TEMPL)
+__SYSMACROS_DEFINE_MAKEDEV(OUT_OF_LINE_IMPL_TEMPL)
new file mode 100644
@@ -0,0 +1,64 @@
+/* Definitions of macros to access `dev_t' values.
+ Copyright (C) 1996-2015 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/>. */
+
+#ifndef _SYS_SYSMACROS_H
+#define _SYS_SYSMACROS_H 1
+
+#include <features.h>
+#include <bits/types.h>
+#include <bits/sysmacros.h>
+
+#define __SYSMACROS_DECL_TEMPL(rtype, name, proto) \
+ extern rtype gnu_dev_##name proto __THROW __attribute_const__;
+
+#define __SYSMACROS_IMPL_TEMPL(rtype, name, proto) \
+ __extension__ __extern_inline __attribute_const__ rtype \
+ __NTH (gnu_dev_##name proto)
+
+__BEGIN_DECLS
+
+__SYSMACROS_DECLARE_MAJOR (__SYSMACROS_DECL_TEMPL)
+__SYSMACROS_DECLARE_MINOR (__SYSMACROS_DECL_TEMPL)
+__SYSMACROS_DECLARE_MAKEDEV (__SYSMACROS_DECL_TEMPL)
+
+#ifdef __USE_EXTERN_INLINES
+
+__SYSMACROS_DEFINE_MAJOR (__SYSMACROS_IMPL_TEMPL)
+__SYSMACROS_DEFINE_MINOR (__SYSMACROS_IMPL_TEMPL)
+__SYSMACROS_DEFINE_MAKEDEV (__SYSMACROS_IMPL_TEMPL)
+
+#endif
+
+__END_DECLS
+
+#ifndef __SYSMACROS_NEED_IMPLEMENTATION
+# undef __SYSMACROS_DECL_TEMPL
+# undef __SYSMACROS_IMPL_TEMPL
+# undef __SYSMACROS_DECLARE_MAJOR
+# undef __SYSMACROS_DECLARE_MINOR
+# undef __SYSMACROS_DECLARE_MAKEDEV
+# undef __SYSMACROS_DEFINE_MAJOR
+# undef __SYSMACROS_DEFINE_MINOR
+# undef __SYSMACROS_DEFINE_MAKEDEV
+#endif
+
+#define major(dev) gnu_dev_major (dev)
+#define minor(dev) gnu_dev_minor (dev)
+#define makedev(maj, min) gnu_dev_makedev (maj, min)
+
+#endif /* sys/sysmacros.h */
new file mode 100644
@@ -0,0 +1,104 @@
+/* Tests of functions to access `dev_t' values.
+ Copyright (C) 2016 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"
@@ -29,7 +29,7 @@ headers := sys/utsname.h sys/times.h sys/wait.h sys/types.h unistd.h \
bits/local_lim.h tar.h bits/utsname.h bits/confname.h \
bits/waitflags.h bits/waitstatus.h sys/unistd.h sched.h \
bits/sched.h re_comp.h wait.h bits/environments.h cpio.h \
- sys/sysmacros.h spawn.h bits/unistd.h
+ spawn.h bits/unistd.h
routines := \
uname \
@@ -1840,4 +1840,8 @@ GLIBC_2.23 fts64_close F
GLIBC_2.23 fts64_open F
GLIBC_2.23 fts64_read F
GLIBC_2.23 fts64_set F
+GLIBC_2.24 GLIBC_2.24 A
GLIBC_2.24 quick_exit F
+GLIBC_2.24 gnu_dev_major F
+GLIBC_2.24 gnu_dev_makedev F
+GLIBC_2.24 gnu_dev_minor F
deleted file mode 100644
@@ -1,30 +0,0 @@
-/* Definitions of macros to access `dev_t' values.
- Copyright (C) 1996-2016 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/>. */
-
-#ifndef _SYS_SYSMACROS_H
-#define _SYS_SYSMACROS_H 1
-
-/* For compatibility we provide alternative names.
-
- The problem here is that compilers other than GCC probably don't
- have the `long long' type and so `dev_t' is actually an array. */
-#define major(dev) ((int)(((unsigned int) (dev) >> 8) & 0xff))
-#define minor(dev) ((int)((dev) & 0xff))
-#define makedev(major, minor) (((major) << 8) | (minor))
-
-#endif /* sys/sysmacros.h */
@@ -15,7 +15,7 @@ ifeq ($(subdir),misc)
include $(firstword $(wildcard $(sysdirs:=/sysctl.mk)))
sysdep_routines += clone llseek umount umount2 readahead \
- setfsuid setfsgid makedev epoll_pwait signalfd \
+ setfsuid setfsgid epoll_pwait signalfd \
eventfd eventfd_read eventfd_write prlimit \
personality
deleted file mode 100644
@@ -1,40 +0,0 @@
-/* Definitions of functions to access `dev_t' values.
- Copyright (C) 2003-2016 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 <endian.h>
-#include <sys/sysmacros.h>
-
-unsigned int
-gnu_dev_major (unsigned long long int dev)
-{
- return ((dev >> 8) & 0xfff) | ((unsigned int) (dev >> 32) & ~0xfff);
-}
-
-unsigned int
-gnu_dev_minor (unsigned long long int dev)
-{
- return (dev & 0xff) | ((unsigned int) (dev >> 12) & ~0xff);
-}
-
-unsigned long long int
-gnu_dev_makedev (unsigned int major, unsigned int minor)
-{
- return ((minor & 0xff) | ((major & 0xfff) << 8)
- | (((unsigned long long int) (minor & ~0xff)) << 12)
- | (((unsigned long long int) (major & ~0xfff)) << 32));
-}
deleted file mode 100644
@@ -1,65 +0,0 @@
-/* Definitions of macros to access `dev_t' values.
- Copyright (C) 1996-2016 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/>. */
-
-#ifndef _SYS_SYSMACROS_H
-#define _SYS_SYSMACROS_H 1
-
-#include <features.h>
-
-__BEGIN_DECLS
-
-__extension__
-extern unsigned int gnu_dev_major (unsigned long long int __dev)
- __THROW __attribute_const__;
-__extension__
-extern unsigned int gnu_dev_minor (unsigned long long int __dev)
- __THROW __attribute_const__;
-__extension__
-extern unsigned long long int gnu_dev_makedev (unsigned int __major,
- unsigned int __minor)
- __THROW __attribute_const__;
-
-#ifdef __USE_EXTERN_INLINES
-__extension__ __extern_inline __attribute_const__ unsigned int
-__NTH (gnu_dev_major (unsigned long long int __dev))
-{
- return ((__dev >> 8) & 0xfff) | ((unsigned int) (__dev >> 32) & ~0xfff);
-}
-
-__extension__ __extern_inline __attribute_const__ unsigned int
-__NTH (gnu_dev_minor (unsigned long long int __dev))
-{
- return (__dev & 0xff) | ((unsigned int) (__dev >> 12) & ~0xff);
-}
-
-__extension__ __extern_inline __attribute_const__ unsigned long long int
-__NTH (gnu_dev_makedev (unsigned int __major, unsigned int __minor))
-{
- return ((__minor & 0xff) | ((__major & 0xfff) << 8)
- | (((unsigned long long int) (__minor & ~0xff)) << 12)
- | (((unsigned long long int) (__major & ~0xfff)) << 32));
-}
-#endif
-__END_DECLS
-
-/* Access the functions with their traditional names. */
-#define major(dev) gnu_dev_major (dev)
-#define minor(dev) gnu_dev_minor (dev)
-#define makedev(maj, min) gnu_dev_makedev (maj, min)
-
-#endif /* sys/sysmacros.h */