def main():
"""The main entry point."""
parser = argparse.ArgumentParser(
description="System call list consistency checks")
parser.add_argument('--cc', metavar='CC', required=True,
help='C compiler (including options) to use')
parser.add_argument('syscall_numbers_list', metavar='PATH',
help='Path to the list of system call numbers')
parser.add_argument('syscall_names_list', metavar='PATH',
help='Path to the list of system call names')
args = parser.parse_args()
glibc_constants = glibcsyscalls.load_arch_syscall_header(
args.syscall_numbers_list)
with open(args.syscall_names_list) as inp:
glibc_names = glibcsyscalls.SyscallNamesList(inp)
kernel_constants = glibcsyscalls.kernel_constants(args.cc)
kernel_version = glibcsyscalls.linux_kernel_version(args.cc)
errors = 0
warnings = False
for name in glibc_constants.keys() & kernel_constants.keys():
if glibc_constants[name] != kernel_constants[name]:
print("error: syscall {!r} number mismatch: glibc={!r} kernel={!r}"
.format(name, glibc_constants[name], kernel_constants[name]))
errors = 1
# The architecture-specific list in the glibc tree must be a
# subset of the global list of system call names.
for name in glibc_constants.keys() - set(glibc_names.syscalls):
print("error: architecture syscall {!r} missing from global names list"
.format(name))
errors = 1
for name in glibc_constants.keys() - kernel_constants.keys():
print("info: glibc syscall {!r} not known to kernel".format(name))
warnings = True
# If the glibc-recorded kernel version is not older than the
# installed kernel headers, the glibc system call set must be a
# superset of the kernel system call set.
if glibc_names.kernel_version >= kernel_version:
for name in kernel_constants.keys() - glibc_constants.keys():
print("error: kernel syscall {!r} ({}) not known to glibc"
.format(name, kernel_constants[name]))
errors = 1
else:
for name in kernel_constants.keys() - glibc_constants.keys():
print("warning: kernel syscall {!r} ({}) not known to glibc"
.format(name, kernel_constants[name]))
warnings = True
if errors > 0 or warnings:
print("info: glibc tables are based on kernel version {}".format(
".".join(map(str, glibc_names.kernel_version))))
print("info: installed kernel headers are version {}".format(
".".join(map(str, kernel_version))))
sys.exit(errors)
def main():
"""The main entry point."""
parser = argparse.ArgumentParser(
description='System call list consistency checks')
parser.add_argument('--cc',
metavar='CC',
required=True,
help='C compiler (including options) to use')
parser.add_argument('--lock',
metavar='PATH',
required=True,
help='file to lock during the updates')
parser.add_argument('arch_syscall',
metavar='ARCH-SYSCALL-H',
help='The <arch-syscall.h> file to update')
parser.add_argument('names_list',
metavar='SYSCALL-NAMES-LIST',
help='The syscall name list to update ')
args = parser.parse_args()
kernel_constants = glibcsyscalls.kernel_constants(args.cc)
with open(args.lock, 'r+') as lockfile:
os.lockf(lockfile.fileno(), os.F_LOCK, 0)
# Replace <arch-syscall.h> with data derived from kernel headers.
# No merging is necessary here. Arch-specific changes should go
# into <fixup-unistd-asm.h>.
out = io.StringIO()
out.write('/* AUTOGENERATED by update-syscall-lists.py. */\n')
for name, value in sorted(kernel_constants.items()):
out.write('#define __NR_{} {}\n'.format(name, value))
atomic_replace(args.arch_syscall, out.getvalue())
# Merge the architecture-specific system call names into the
# global names list, syscall-names.list. This file contains names
# from other architectures (and comments), so it is necessary to
# merge the existing files with the names obtained from the
# kernel.
with open(args.names_list, 'r') as list_file:
names_list = glibcsyscalls.SyscallNamesList(list_file)
merged = names_list.merge(kernel_constants.keys())
out = io.StringIO()
for line in merged:
out.write(line)
atomic_replace(args.names_list, out.getvalue())
