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[contrib] Support ARM and RISC-V symbol check

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pull/13724/head
Chun Kuan Lee 6 years ago
parent 55c18a4530
commit c516c3a770
2 changed files with 32 additions and 29 deletions
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48
contrib/devtools/symbol-check.py
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@ -36,17 +36,18 @@ import os
# (glibc) GLIBC_2_11
#
MAX_VERSIONS = {
'GCC': (4,4,0),
'CXXABI': (1,3,3),
'GLIBCXX': (3,4,13),
'GLIBC': (2,11)
'GCC': (4,4,0),
'CXXABI': (1,3,3),
'GLIBCXX': (3,4,13),
'GLIBC': (2,11),
'LIBATOMIC': (1,0)
}
# See here for a description of _IO_stdin_used:
# https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=634261#109
# Ignore symbols that are exported as part of every executable
IGNORE_EXPORTS = {
'_edata', '_end', '_init', '__bss_start', '_fini', '_IO_stdin_used', 'stdin', 'stdout', 'stderr'
'_edata', '_end', '__end__', '_init', '__bss_start', '__bss_start__', '_bss_end__', '__bss_end__', '_fini', '_IO_stdin_used', 'stdin', 'stdout', 'stderr'
}
READELF_CMD = os.getenv('READELF', '/usr/bin/readelf')
CPPFILT_CMD = os.getenv('CPPFILT', '/usr/bin/c++filt')
@ -59,8 +60,12 @@ ALLOWED_LIBRARIES = {
'libanl.so.1', # DNS resolve
'libm.so.6', # math library
'librt.so.1', # real-time (clock)
'libatomic.so.1',
'ld-linux-x86-64.so.2', # 64-bit dynamic linker
'ld-linux.so.2', # 32-bit dynamic linker
'ld-linux-aarch64.so.1', # 64-bit ARM dynamic linker
'ld-linux-armhf.so.3', # 32-bit ARM dynamic linker
'ld-linux-riscv64-lp64d.so.1', # 64-bit RISC-V dynamic linker
# bitcoin-qt only
'libX11-xcb.so.1', # part of X11
'libX11.so.6', # part of X11
@ -69,7 +74,13 @@ ALLOWED_LIBRARIES = {
'libfreetype.so.6', # font parsing
'libdl.so.2' # programming interface to dynamic linker
}
ARCH_MIN_GLIBC_VER = {
'80386': (2,1),
'X86-64': (2,2,5),
'ARM': (2,4),
'AArch64':(2,17),
'RISC-V': (2,27)
}
class CPPFilt(object):
'''
Demangle C++ symbol names.
@ -94,23 +105,25 @@ def read_symbols(executable, imports=True):
Parse an ELF executable and return a list of (symbol,version) tuples
for dynamic, imported symbols.
'''
p = subprocess.Popen([READELF_CMD, '--dyn-syms', '-W', executable], stdout=subprocess.PIPE, stderr=subprocess.PIPE, stdin=subprocess.PIPE, universal_newlines=True)
p = subprocess.Popen([READELF_CMD, '--dyn-syms', '-W', '-h', executable], stdout=subprocess.PIPE, stderr=subprocess.PIPE, stdin=subprocess.PIPE, universal_newlines=True)
(stdout, stderr) = p.communicate()
if p.returncode:
raise IOError('Could not read symbols for %s: %s' % (executable, stderr.strip()))
syms = []
for line in stdout.splitlines():
line = line.split()
if 'Machine:' in line:
arch = line[-1]
if len(line)>7 and re.match('[0-9]+:$', line[0]):
(sym, _, version) = line[7].partition('@')
is_import = line[6] == 'UND'
if version.startswith('@'):
version = version[1:]
if is_import == imports:
syms.append((sym, version))
syms.append((sym, version, arch))
return syms
def check_version(max_versions, version):
def check_version(max_versions, version, arch):
if '_' in version:
(lib, _, ver) = version.rpartition('_')
else:
@ -119,7 +132,7 @@ def check_version(max_versions, version):
ver = tuple([int(x) for x in ver.split('.')])
if not lib in max_versions:
return False
return ver <= max_versions[lib]
return ver <= max_versions[lib] or lib == 'GLIBC' and ver <= ARCH_MIN_GLIBC_VER[arch]
def read_libraries(filename):
p = subprocess.Popen([READELF_CMD, '-d', '-W', filename], stdout=subprocess.PIPE, stderr=subprocess.PIPE, stdin=subprocess.PIPE, universal_newlines=True)
@ -142,16 +155,17 @@ if __name__ == '__main__':
retval = 0
for filename in sys.argv[1:]:
# Check imported symbols
for sym,version in read_symbols(filename, True):
if version and not check_version(MAX_VERSIONS, version):
for sym,version,arch in read_symbols(filename, True):
if version and not check_version(MAX_VERSIONS, version, arch):
print('%s: symbol %s from unsupported version %s' % (filename, cppfilt(sym), version))
retval = 1
# Check exported symbols
for sym,version in read_symbols(filename, False):
if sym in IGNORE_EXPORTS:
continue
print('%s: export of symbol %s not allowed' % (filename, cppfilt(sym)))
retval = 1
if arch != 'RISC-V':
for sym,version,arch in read_symbols(filename, False):
if sym in IGNORE_EXPORTS:
continue
print('%s: export of symbol %s not allowed' % (filename, cppfilt(sym)))
retval = 1
# Check dependency libraries
for library_name in read_libraries(filename):
if library_name not in ALLOWED_LIBRARIES:

13
contrib/gitian-descriptors/gitian-linux.yml
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@ -173,18 +173,7 @@ script: |
CONFIG_SITE=${BASEPREFIX}/${i}/share/config.site ./configure --prefix=/ --disable-ccache --disable-maintainer-mode --disable-dependency-tracking ${CONFIGFLAGS} CFLAGS="${HOST_CFLAGS}" CXXFLAGS="${HOST_CXXFLAGS}" LDFLAGS="${HOST_LDFLAGS}"
make ${MAKEOPTS}
make ${MAKEOPTS} -C src check-security
#TODO: This is a quick hack that disables symbol checking for arm.
# Instead, we should investigate why these are popping up.
# For aarch64, we'll need to bump up the min GLIBC version, as the abi
# support wasn't introduced until 2.17.
case $i in
aarch64-*) : ;;
arm-*) : ;;
riscv64-*) : ;;
*) make ${MAKEOPTS} -C src check-symbols ;;
esac
make ${MAKEOPTS} -C src check-symbols
make install DESTDIR=${INSTALLPATH}
cd installed
find . -name "lib*.la" -delete

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