glibc/io/Makefile
Xiaoming Ni 106ff08526 io: nftw/ftw: Fix stack overflow with large nopenfd [BZ #26353]
The nopenfd value is used as argument for the internal buffer on
ftw_statup, which is allocated with alloca and might trigger
a stack overflow for large values.  This patch replaces the memory
allocation to use malloc instead.

Checked on x86_64-linux-gnu.

Reviewed-by: Adhemerval Zanella  <adhemerval.zanella@linaro.org>
2020-11-26 17:35:58 -03:00

123 lines
4.6 KiB
Makefile

# Copyright (C) 1992-2020 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
# <https://www.gnu.org/licenses/>.
#
# Sub-makefile for I/O portion of the library.
#
subdir := io
include ../Makeconfig
headers := sys/stat.h bits/stat.h sys/statfs.h bits/statfs.h sys/vfs.h \
sys/statvfs.h bits/statvfs.h fcntl.h sys/fcntl.h bits/fcntl.h \
poll.h sys/poll.h bits/poll.h bits/fcntl2.h bits/poll2.h \
bits/statx.h bits/statx-generic.h bits/types/struct_statx.h \
bits/types/struct_statx_timestamp.h \
utime.h ftw.h fts.h sys/sendfile.h
routines := \
utime \
mkfifo mkfifoat \
stat fstat lstat stat64 fstat64 lstat64 fstatat fstatat64 \
xstat fxstat lxstat xstat64 fxstat64 lxstat64 statx \
mknod mknodat xmknod xmknodat \
fxstatat fxstatat64 \
statfs fstatfs statfs64 fstatfs64 \
statvfs fstatvfs statvfs64 fstatvfs64 \
umask chmod fchmod lchmod fchmodat \
mkdir mkdirat \
open open_2 open64 open64_2 openat openat_2 openat64 openat64_2 \
read write lseek lseek64 access euidaccess faccessat \
fcntl fcntl64 flock lockf lockf64 \
close dup dup2 dup3 pipe pipe2 \
creat creat64 \
chdir fchdir \
getcwd getwd getdirname \
chown fchown lchown fchownat \
ttyname ttyname_r isatty \
link linkat symlink symlinkat readlink readlinkat \
unlink unlinkat rmdir \
ftw ftw64 fts fts64 poll ppoll \
posix_fadvise posix_fadvise64 \
posix_fallocate posix_fallocate64 \
sendfile sendfile64 copy_file_range \
utimensat futimens file_change_detection
others := pwd
test-srcs := ftwtest
tests := test-utime test-stat test-stat2 test-lfs tst-getcwd \
tst-fcntl bug-ftw1 bug-ftw2 bug-ftw3 bug-ftw4 tst-statvfs \
tst-openat tst-unlinkat tst-fstatat tst-futimesat \
tst-renameat tst-fchownat tst-fchmodat tst-faccessat \
tst-symlinkat tst-linkat tst-readlinkat tst-mkdirat \
tst-mknodat tst-mkfifoat tst-ttyname_r bug-ftw5 \
tst-posix_fallocate tst-posix_fallocate64 \
tst-fts tst-fts-lfs tst-open-tmpfile \
tst-copy_file_range tst-getcwd-abspath tst-lockf \
tst-ftw-lnk tst-file_change_detection tst-lchmod \
tst-ftw-bz26353
# Likewise for statx, but we do not need static linking here.
tests-internal += tst-statx
tests-static += tst-statx
ifeq ($(run-built-tests),yes)
tests-special += $(objpfx)ftwtest.out
endif
include ../Rules
CFLAGS-open.c += -fexceptions -fasynchronous-unwind-tables
CFLAGS-open64.c += -fexceptions -fasynchronous-unwind-tables
CFLAGS-creat.c += -fexceptions -fasynchronous-unwind-tables
CFLAGS-creat64.c += -fexceptions -fasynchronous-unwind-tables
CFLAGS-fcntl.c += -fexceptions -fasynchronous-unwind-tables
CFLAGS-fcntl64.c += -fexceptions -fasynchronous-unwind-tables
CFLAGS-poll.c += -fexceptions -fasynchronous-unwind-tables
CFLAGS-ppoll.c += -fexceptions -fasynchronous-unwind-tables
CFLAGS-lockf.c += -fexceptions -fasynchronous-unwind-tables
CFLAGS-lockf64.c += -fexceptions -fasynchronous-unwind-tables
CFLAGS-statfs.c += -fexceptions
CFLAGS-fstatfs.c += -fexceptions
CFLAGS-statvfs.c += -fexceptions
CFLAGS-fstatvfs.c += -fexceptions
CFLAGS-fts.c += -Wno-uninitialized $(uses-callbacks) -fexceptions
CFLAGS-fts64.c += -Wno-uninitialized $(uses-callbacks) -fexceptions
CFLAGS-ftw.c += $(uses-callbacks) -fexceptions
CFLAGS-ftw64.c += $(uses-callbacks) -fexceptions
CFLAGS-posix_fallocate.c += -fexceptions
CFLAGS-posix_fallocate64.c += -fexceptions
CFLAGS-fallocate.c += -fexceptions
CFLAGS-fallocate64.c += -fexceptions
CFLAGS-read.c += -fexceptions
CFLAGS-write.c += -fexceptions
CFLAGS-test-stat.c += -D_FILE_OFFSET_BITS=64 -D_LARGEFILE64_SOURCE
CFLAGS-test-lfs.c += -D_LARGEFILE64_SOURCE
test-stat2-ARGS = Makefile . $(objpfx)test-stat2
tst-statvfs-ARGS = $(objpfx)tst-statvfs tst-statvfs.c /tmp
tst-open-tmpfile-ARGS = --test-dir=$(objpfx)
ifeq ($(run-built-tests),yes)
$(objpfx)ftwtest.out: ftwtest-sh $(objpfx)ftwtest
$(SHELL) $< $(common-objpfx) '$(test-program-cmd)' > $@; \
$(evaluate-test)
endif