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From 534e6d555736b97211523970d378dfb0db2608e9 Mon Sep 17 00:00:00 2001
From: Ilya Lipnitskiy <ilya.lipnitskiy@gmail.com>
Date: Mon, 22 Feb 2021 21:44:07 -0800
Subject: [PATCH 1/6] tmpnam.c: fix heap overflow
Signed-off-by: Ilya Lipnitskiy <ilya.lipnitskiy@gmail.com>
---
src/tmpnam.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/src/tmpnam.c b/src/tmpnam.c
index ce60817..917ee6b 100644
--- a/src/tmpnam.c
+++ b/src/tmpnam.c
@@ -42,7 +42,7 @@ wrapper(tmpnam, char *, (char * s))
expand_chroot_path(ptr);
- ptr2 = malloc(strlen(ptr));
+ ptr2 = malloc(strlen(ptr) + 1);
if (ptr2 == NULL) return NULL;
strcpy(ptr2, ptr);
From 75d7e6fa191c11a791faff06a0de86eaa7801d05 Mon Sep 17 00:00:00 2001
From: Ilya Lipnitskiy <ilya.lipnitskiy@gmail.com>
Date: Mon, 22 Feb 2021 21:46:36 -0800
Subject: [PATCH 2/6] declare missing bufs, remove ver from lstat
Signed-off-by: Ilya Lipnitskiy <ilya.lipnitskiy@gmail.com>
---
src/lstat.c | 8 +++++---
src/lstat.h | 2 +-
src/mknod.c | 2 ++
src/stat.c | 2 ++
src/stat64.c | 2 ++
5 files changed, 12 insertions(+), 4 deletions(-)
diff --git a/src/lstat.c b/src/lstat.c
index 3f6d819..54e3263 100644
--- a/src/lstat.c
+++ b/src/lstat.c
@@ -28,9 +28,11 @@
#include "lstat.h"
-wrapper(lstat, int, (int ver, const char * filename, struct stat * buf))
+wrapper(lstat, int, (const char * filename, struct stat * buf))
{
- debug("lstat(%d, \"%s\", &buf)", ver, filename);
+ char fakechroot_abspath[FAKECHROOT_PATH_MAX];
+ char fakechroot_buf[FAKECHROOT_PATH_MAX];
+ debug("lstat(\"%s\", &buf)", filename);
if (!fakechroot_localdir(filename)) {
if (filename != NULL) {
@@ -40,7 +42,7 @@ wrapper(lstat, int, (int ver, const char * filename, struct stat * buf))
}
}
- return lstat_rel(ver, filename, buf);
+ return lstat_rel(filename, buf);
}
diff --git a/src/lstat.h b/src/lstat.h
index 751c1ea..ee48303 100644
--- a/src/lstat.h
+++ b/src/lstat.h
@@ -26,7 +26,7 @@
#ifndef HAVE___LXSTAT
-wrapper_proto(lstat, int, (int, const char *, struct stat *));
+wrapper_proto(lstat, int, (const char *, struct stat *));
int lstat_rel(const char *, struct stat *);
diff --git a/src/mknod.c b/src/mknod.c
index 52fd33b..2771037 100644
--- a/src/mknod.c
+++ b/src/mknod.c
@@ -28,6 +28,8 @@
wrapper(mknod, int, (const char * pathname, mode_t mode, dev_t dev))
{
+ char fakechroot_abspath[FAKECHROOT_PATH_MAX];
+ char fakechroot_buf[FAKECHROOT_PATH_MAX];
debug("mknod(\"%s\", 0%o, %ld)", pathname, mode, dev);
expand_chroot_path(pathname);
return nextcall(mknod)(pathname, mode, dev);
diff --git a/src/stat.c b/src/stat.c
index 7845662..7b37793 100644
--- a/src/stat.c
+++ b/src/stat.c
@@ -33,6 +33,8 @@
wrapper(stat, int, (const char * file_name, struct stat * buf))
{
+ char fakechroot_abspath[FAKECHROOT_PATH_MAX];
+ char fakechroot_buf[FAKECHROOT_PATH_MAX];
debug("stat(\"%s\", &buf)", file_name);
expand_chroot_path(file_name);
return nextcall(stat)(file_name, buf);
diff --git a/src/stat64.c b/src/stat64.c
index aac9c75..a360f66 100644
--- a/src/stat64.c
+++ b/src/stat64.c
@@ -34,6 +34,8 @@
wrapper(stat64, int, (const char * file_name, struct stat64 * buf))
{
+ char fakechroot_abspath[FAKECHROOT_PATH_MAX];
+ char fakechroot_buf[FAKECHROOT_PATH_MAX];
debug("stat64(\"%s\", &buf)", file_name);
expand_chroot_path(file_name);
return nextcall(stat64)(file_name, buf);
From 693a3597ea7fccfb62f357503ff177bd3e3d5a89 Mon Sep 17 00:00:00 2001
From: Ilya Lipnitskiy <ilya.lipnitskiy@gmail.com>
Date: Mon, 22 Feb 2021 21:47:09 -0800
Subject: [PATCH 3/6] fix glibc 2.33+ compatibility
Signed-off-by: Ilya Lipnitskiy <ilya.lipnitskiy@gmail.com>
---
configure.ac | 20 ++++++++++++++++++++
src/ftw.c | 2 +-
src/ftw64.c | 14 +++++++++++---
src/libfakechroot.h | 15 +++++++++++++++
src/lstat.c | 2 +-
src/lstat.h | 2 +-
src/lstat64.c | 2 +-
src/mknod.c | 2 +-
src/mknodat.c | 2 +-
src/stat.c | 2 +-
src/stat64.c | 2 +-
11 files changed, 54 insertions(+), 11 deletions(-)
diff --git a/configure.ac b/configure.ac
index f8cdb32..9cc2e77 100644
--- a/configure.ac
+++ b/configure.ac
@@ -75,6 +75,26 @@ ACX_CHECK_C_ATTRIBUTE_VISIBILITY
# Checks for libraries.
AC_CHECK_LIB([dl], [dlsym])
+AH_TEMPLATE([NEW_GLIBC], [glibc >= 2.33])
+AC_MSG_CHECKING([for glibc 2.33+])
+ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
+ #include <sys/stat.h>
+ ]], [[
+#ifdef __GLIBC__
+#if !__GLIBC_PREREQ(2,33)
+#error glibc<2.33
+#endif
+#else
+#error not glibc
+#endif
+ ]])],[
+ AC_DEFINE(NEW_GLIBC,1)
+ AC_MSG_RESULT([yes])
+ ],[
+ AC_DEFINE(NEW_GLIBC,0)
+ AC_MSG_RESULT([no])
+ ])
+
# Checks for header files.
AC_HEADER_DIRENT
AC_HEADER_STDC
diff --git a/src/ftw.c b/src/ftw.c
index 92fc126..a9abc85 100644
--- a/src/ftw.c
+++ b/src/ftw.c
@@ -185,7 +185,7 @@ int rpl_lstat (const char *, struct stat *);
# define NFTW_NEW_NAME __new_nftw
# define INO_T ino_t
# define STAT stat
-# ifdef _LIBC
+# if defined(_LIBC) && !NEW_GLIBC
# define LXSTAT __lxstat
# define XSTAT __xstat
# define FXSTATAT __fxstatat
diff --git a/src/ftw64.c b/src/ftw64.c
index 7cc8cdf..cee1f2b 100644
--- a/src/ftw64.c
+++ b/src/ftw64.c
@@ -18,6 +18,8 @@
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
+#include "config.h"
+
#define __FTW64_C
#define FTW_NAME ftw64
#define NFTW_NAME nftw64
@@ -25,9 +27,15 @@
#define NFTW_NEW_NAME __new_nftw64
#define INO_T ino64_t
#define STAT stat64
-#define LXSTAT __lxstat64
-#define XSTAT __xstat64
-#define FXSTATAT __fxstatat64
+#if NEW_GLIBC
+# define LXSTAT(V,f,sb) lstat64 (f,sb)
+# define XSTAT(V,f,sb) stat64 (f,sb)
+# define FXSTATAT(V,d,f,sb,m) fstatat64 (d, f, sb, m)
+#else
+# define LXSTAT __lxstat64
+# define XSTAT __xstat64
+# define FXSTATAT __fxstatat64
+#endif
#define FTW_FUNC_T __ftw64_func_t
#define NFTW_FUNC_T __nftw64_func_t
diff --git a/src/libfakechroot.h b/src/libfakechroot.h
index 4cf199f..64ff15f 100644
--- a/src/libfakechroot.h
+++ b/src/libfakechroot.h
@@ -200,6 +200,21 @@
# endif
#endif
+#ifndef _STAT_VER
+ #if defined (__aarch64__)
+ #define _STAT_VER 0
+ #elif defined (__powerpc__) && __WORDSIZE == 64
+ #define _STAT_VER 1
+ #elif defined (__riscv) && __riscv_xlen==64
+ #define _STAT_VER 0
+ #elif defined (__s390x__)
+ #define _STAT_VER 1
+ #elif defined (__x86_64__)
+ #define _STAT_VER 1
+ #else
+ #define _STAT_VER 3
+ #endif
+#endif
typedef void (*fakechroot_wrapperfn_t)(void);
diff --git a/src/lstat.c b/src/lstat.c
index 54e3263..fa38323 100644
--- a/src/lstat.c
+++ b/src/lstat.c
@@ -20,7 +20,7 @@
#include <config.h>
-#ifndef HAVE___LXSTAT
+#if !defined(HAVE___LXSTAT) || NEW_GLIBC
#include <sys/stat.h>
#include <unistd.h>
diff --git a/src/lstat.h b/src/lstat.h
index ee48303..c46a2b9 100644
--- a/src/lstat.h
+++ b/src/lstat.h
@@ -24,7 +24,7 @@
#include <config.h>
#include "libfakechroot.h"
-#ifndef HAVE___LXSTAT
+#if !defined(HAVE___LXSTAT) || NEW_GLIBC
wrapper_proto(lstat, int, (const char *, struct stat *));
diff --git a/src/lstat64.c b/src/lstat64.c
index b6212fc..a332d7c 100644
--- a/src/lstat64.c
+++ b/src/lstat64.c
@@ -20,7 +20,7 @@
#include <config.h>
-#if defined(HAVE_LSTAT64) && !defined(HAVE___LXSTAT64)
+#if defined(HAVE_LSTAT64) && (!defined(HAVE___LXSTAT64) || NEW_GLIBC)
#define _LARGEFILE64_SOURCE
#define _BSD_SOURCE
diff --git a/src/mknod.c b/src/mknod.c
index 2771037..aeb750b 100644
--- a/src/mknod.c
+++ b/src/mknod.c
@@ -20,7 +20,7 @@
#include <config.h>
-#ifndef HAVE___XMKNOD
+#if !defined(HAVE___XMKNOD) || NEW_GLIBC
#include <sys/stat.h>
#include "libfakechroot.h"
diff --git a/src/mknodat.c b/src/mknodat.c
index 732a22b..3239b35 100644
--- a/src/mknodat.c
+++ b/src/mknodat.c
@@ -20,7 +20,7 @@
#include <config.h>
-#if defined(HAVE_MKNODAT) && !defined(HAVE___XMKNODAT)
+#if defined(HAVE_MKNODAT) && (!defined(HAVE___XMKNODAT) || NEW_GLIBC)
#define _ATFILE_SOURCE
#include <sys/stat.h>
diff --git a/src/stat.c b/src/stat.c
index 7b37793..5ef57ba 100644
--- a/src/stat.c
+++ b/src/stat.c
@@ -20,7 +20,7 @@
#include <config.h>
-#ifndef HAVE___XSTAT
+#if !defined(HAVE___XSTAT) || NEW_GLIBC
#define _BSD_SOURCE
#define _DEFAULT_SOURCE
diff --git a/src/stat64.c b/src/stat64.c
index a360f66..993ce80 100644
--- a/src/stat64.c
+++ b/src/stat64.c
@@ -20,7 +20,7 @@
#include <config.h>
-#if defined(HAVE_STAT64) && !defined(HAVE___XSTAT64)
+#if defined(HAVE_STAT64) && (!defined(HAVE___XSTAT64) || NEW_GLIBC)
#define _BSD_SOURCE
#define _LARGEFILE64_SOURCE
From e7c1f3a446e594a4d0cce5f5d499c9439ce1d5c5 Mon Sep 17 00:00:00 2001
From: neok-m4700 <neok-m4700@users.noreply.github.com>
Date: Wed, 24 Feb 2021 17:36:57 +0100
Subject: [PATCH 6/6] wrap fstatat and fstatat64
---
configure.ac | 2 ++
src/Makefile.am | 2 ++
src/fstatat.c | 42 ++++++++++++++++++++++++++++++++++++++++++
src/fstatat64.c | 43 +++++++++++++++++++++++++++++++++++++++++++
4 files changed, 89 insertions(+)
create mode 100644 src/fstatat.c
create mode 100644 src/fstatat64.c
diff --git a/configure.ac b/configure.ac
index 9cc2e77..5b3053e 100644
--- a/configure.ac
+++ b/configure.ac
@@ -218,6 +218,8 @@ AC_CHECK_FUNCS(m4_normalize([
freopen64
fstat
fstat64
+ fstatat
+ fstatat64
fts_children
fts_open
fts_read
diff --git a/src/Makefile.am b/src/Makefile.am
index 6066345..eb311c0 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -61,6 +61,8 @@ libfakechroot_la_SOURCES = \
fopen64.c \
freopen.c \
freopen64.c \
+ fstatat.c \
+ fstatat64.c \
fts.c \
fts64.c \
ftw.c \
diff --git a/src/fstatat.c b/src/fstatat.c
new file mode 100644
index 0000000..ca7578b
--- /dev/null
+++ b/src/fstatat.c
@@ -0,0 +1,42 @@
+/*
+ libfakechroot -- fake chroot environment
+ Copyright (c) 2010, 2021 Piotr Roszatycki <dexter@debian.org>
+
+ This 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.
+
+ This 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 this library; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+*/
+
+
+#include <config.h>
+
+#ifdef HAVE_FSTATAT
+
+#define _ATFILE_SOURCE
+#define _POSIX_C_SOURCE 200809L
+#include <sys/stat.h>
+#include <limits.h>
+#include "libfakechroot.h"
+
+wrapper(fstatat, int, (int dirfd, const char *pathname, struct stat *buf, int flags))
+{
+ char fakechroot_abspath[FAKECHROOT_PATH_MAX];
+ char fakechroot_buf[FAKECHROOT_PATH_MAX];
+ debug("fstatat(%d, \"%s\", &buf, %d)", dirfd, pathname, flags);
+ expand_chroot_path_at(dirfd, pathname);
+ return nextcall(fstatat)(dirfd, pathname, buf, flags);
+}
+
+#else
+typedef int empty_translation_unit;
+#endif
diff --git a/src/fstatat64.c b/src/fstatat64.c
new file mode 100644
index 0000000..1863372
--- /dev/null
+++ b/src/fstatat64.c
@@ -0,0 +1,43 @@
+/*
+ libfakechroot -- fake chroot environment
+ Copyright (c) 2010, 2021 Piotr Roszatycki <dexter@debian.org>
+
+ This 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.
+
+ This 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 this library; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+*/
+
+
+#include <config.h>
+
+#ifdef HAVE_FSTATAT64
+
+#define _ATFILE_SOURCE
+#define _POSIX_C_SOURCE 200809L
+#define _LARGEFILE64_SOURCE
+#include <sys/stat.h>
+#include <limits.h>
+#include "libfakechroot.h"
+
+wrapper(fstatat64, int, (int dirfd, const char *pathname, struct stat64 *buf, int flags))
+{
+ char fakechroot_abspath[FAKECHROOT_PATH_MAX];
+ char fakechroot_buf[FAKECHROOT_PATH_MAX];
+ debug("fstatat64(%d, \"%s\", &buf, %d)", dirfd, pathname, flags);
+ expand_chroot_path_at(dirfd, pathname);
+ return nextcall(fstatat64)(dirfd, pathname, buf, flags);
+}
+
+#else
+typedef int empty_translation_unit;
+#endif