diff options
| -rw-r--r-- | ChangeLog | 9 | ||||
| -rw-r--r-- | scripts/glibcextract.py | 21 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/Makefile | 9 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/tst-mman-consts.py | 65 |
4 files changed, 100 insertions, 4 deletions
@@ -1,3 +1,12 @@ +2018-12-17 Joseph Myers <joseph@codesourcery.com> + + * scripts/glibcextract.py (compare_macro_consts): Take parameters + to allow extra macros from first or second sources. + * sysdeps/unix/sysv/linux/tst-mman-consts.py: New file. + * sysdeps/unix/sysv/linux/Makefile [$(subdir) = misc] + (tests-special): Add $(objpfx)tst-mman-consts.out. + ($(objpfx)tst-mman-consts.out): New makefile target. + 2018-12-17 Mao Han <han_mao@c-sky.com> * sysdeps/unix/sysv/linux/Makefile: Add statx_cp.c. diff --git a/scripts/glibcextract.py b/scripts/glibcextract.py index ecc4d5b..06f712a 100644 --- a/scripts/glibcextract.py +++ b/scripts/glibcextract.py @@ -136,12 +136,19 @@ def compute_macro_consts(source_text, cc, macro_re, exclude_re=None): return compute_c_consts(sym_data, cc) -def compare_macro_consts(source_1, source_2, cc, macro_re, exclude_re=None): +def compare_macro_consts(source_1, source_2, cc, macro_re, exclude_re=None, + allow_extra_1=False, allow_extra_2=False): """Compare the values of macros defined by two different sources. The sources would typically be includes of a glibc header and a - kernel header. Return 1 if there were any differences, 0 if the - macro values were the same. + kernel header. If allow_extra_1, the first source may define + extra macros (typically if the kernel headers are older than the + version glibc has taken definitions from); if allow_extra_2, the + second source may define extra macros (typically if the kernel + headers are newer than the version glibc has taken definitions + from). Return 1 if there were any differences other than those + allowed, 0 if the macro values were the same apart from any + allowed differences. """ macros_1 = compute_macro_consts(source_1, cc, macro_re, exclude_re) @@ -150,13 +157,19 @@ def compare_macro_consts(source_1, source_2, cc, macro_re, exclude_re=None): return 0 print('First source:\n%s\n' % source_1) print('Second source:\n%s\n' % source_2) + ret = 0 for name, value in sorted(macros_1.items()): if name not in macros_2: print('Only in first source: %s' % name) + if not allow_extra_1: + ret = 1 elif macros_1[name] != macros_2[name]: print('Different values for %s: %s != %s' % (name, macros_1[name], macros_2[name])) + ret = 1 for name in sorted(macros_2.keys()): if name not in macros_1: print('Only in second source: %s' % name) - return 1 + if not allow_extra_2: + ret = 1 + return ret diff --git a/sysdeps/unix/sysv/linux/Makefile b/sysdeps/unix/sysv/linux/Makefile index 2c1a7dd..f827455 100644 --- a/sysdeps/unix/sysv/linux/Makefile +++ b/sysdeps/unix/sysv/linux/Makefile @@ -100,6 +100,15 @@ $(objpfx)tst-sysconf-iov_max: $(objpfx)tst-sysconf-iov_max-uapi.o $(objpfx)tst-pkey: $(shared-thread-library) +tests-special += $(objpfx)tst-mman-consts.out +$(objpfx)tst-mman-consts.out: ../sysdeps/unix/sysv/linux/tst-mman-consts.py + PYTHONPATH=../scripts \ + $(PYTHON) ../sysdeps/unix/sysv/linux/tst-mman-consts.py \ + --cc="$(CC) $(patsubst -DMODULE_NAME=%, \ + -DMODULE_NAME=testsuite, \ + $(CPPFLAGS))" \ + < /dev/null > $@ 2>&1; $(evaluate-test) + endif # $(subdir) == misc ifeq ($(subdir),time) diff --git a/sysdeps/unix/sysv/linux/tst-mman-consts.py b/sysdeps/unix/sysv/linux/tst-mman-consts.py new file mode 100644 index 0000000..1a613be --- /dev/null +++ b/sysdeps/unix/sysv/linux/tst-mman-consts.py @@ -0,0 +1,65 @@ +#!/usr/bin/python3 +# Test that glibc's sys/mman.h constants match the kernel's. +# Copyright (C) 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/>. + +import argparse +import sys + +import glibcextract + + +def linux_kernel_version(cc): + """Return the (major, minor) version of the Linux kernel headers.""" + sym_data = ['#include <linux/version.h>', 'START', + ('LINUX_VERSION_CODE', 'LINUX_VERSION_CODE')] + val = glibcextract.compute_c_consts(sym_data, cc)['LINUX_VERSION_CODE'] + val = int(val) + return ((val & 0xff0000) >> 16, (val & 0xff00) >> 8) + + +def main(): + """The main entry point.""" + parser = argparse.ArgumentParser( + description="Test that glibc's sys/mman.h constants " + "match the kernel's.") + parser.add_argument('--cc', metavar='CC', + help='C compiler (including options) to use') + args = parser.parse_args() + linux_version_headers = linux_kernel_version(args.cc) + linux_version_glibc = (4, 19) + sys.exit(glibcextract.compare_macro_consts( + '#define _GNU_SOURCE 1\n' + '#include <sys/mman.h>\n', + '#define _GNU_SOURCE 1\n' + '#include <linux/mman.h>\n', + args.cc, + 'MAP_.*', + # A series of MAP_HUGE_<size> macros are defined by the kernel + # but not by glibc. MAP_UNINITIALIZED is kernel-only. + # MAP_FAILED is not a MAP_* flag and is glibc-only, as is the + # MAP_ANON alias for MAP_ANONYMOUS. MAP_RENAME, MAP_AUTOGROW, + # MAP_LOCAL and MAP_AUTORSRV are in the kernel header for + # MIPS, marked as "not used by linux"; SPARC has MAP_INHERIT + # in the kernel header, but does not use it. + 'MAP_HUGE_[0-9].*|MAP_UNINITIALIZED|MAP_FAILED|MAP_ANON' + '|MAP_RENAME|MAP_AUTOGROW|MAP_LOCAL|MAP_AUTORSRV|MAP_INHERIT', + linux_version_glibc > linux_version_headers, + linux_version_headers > linux_version_glibc)) + +if __name__ == '__main__': + main() |