sys-fs/e4rat: fix memory corruption

It is unsafe to use Config::get<T>(arg)c_str() pointer
directly, since it may be overwritten by later get calls.

Package-Manager: Portage-2.3.3, Repoman-2.3.1
Signed-off-by: Andrew Savchenko <bircoph@gentoo.org>

2 files changed, 105 insertions, 0 deletions

diff --git a/sys-fs/e4rat/e4rat-0.2.4_pre20141201-r1.ebuild b/sys-fs/e4rat/e4rat-0.2.4_pre20141201-r1.ebuild
new file mode 100644
index 000000000000..6792b38e4eb6
--- /dev/null
+++ b/sys-fs/e4rat/e4rat-0.2.4_pre20141201-r1.ebuild
@@ -0,0 +1,64 @@
+# Copyright 1999-2017 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+# $Id$
+
+EAPI=6
+inherit cmake-utils linux-info readme.gentoo-r1
+
+DESCRIPTION="Toolset to accelerate the boot process and application startup"
+HOMEPAGE="http://e4rat.sourceforge.net/"
+#SRC_URI="mirror://sourceforge/${PN}/${P/-/_}_src.tar.gz"
+SRC_URI="https://dev.gentoo.org/~pacho/${PN}/${PN}-0.2.4_pre20141201.tar.xz"
+
+LICENSE="GPL-3"
+SLOT="0"
+KEYWORDS="~amd64 ~x86"
+IUSE=""
+
+RDEPEND="
+	dev-lang/perl:=
+	>=dev-libs/boost-1.42:=
+	sys-fs/e2fsprogs
+	sys-process/audit[static-libs(+)]
+	sys-process/lsof
+"
+DEPEND="${DEPEND}"
+
+CONFIG_CHECK="~AUDITSYSCALL"
+
+PATCHES=(
+	"${FILESDIR}"/${PN}-0.2.2-shared-build.patch
+	"${FILESDIR}"/${PN}-0.2.2-libdir.patch
+	"${FILESDIR}"/${PN}-0.2.4-sysmacros.patch #580534
+	"${FILESDIR}"/${PN}-0.2.4-gcc6.patch #594046
+	"${FILESDIR}"/${PN}-0.2.4-strdup.patch
+)
+
+pkg_setup() {
+	check_extra_config
+	DOC_CONTENTS="
+		To launch systemd from e4rat you simply need to edit /etc/e4rat.conf
+		and set:\n
+		; path to init process binary (DEFAULT: /sbin/init)\n
+		init /usr/lib/systemd/systemd"
+}
+
+src_install() {
+	cmake-utils_src_install
+	# relocate binaries to /sbin. If someone knows of a better way to do it
+	# please do tell me
+	dodir sbin
+	find "${D}"/usr/sbin -type f -exec mv {} "${D}"/sbin/. \; \
+		|| die
+
+	readme.gentoo_create_doc
+}
+
+pkg_postinst() {
+	readme.gentoo_print_elog
+	if has_version sys-apps/preload; then
+		elog "It appears you have sys-apps/preload installed. This may"
+		elog "has negative effects on ${PN}. You may want to disable preload"
+		elog "when using ${PN}."
+	fi
+}
diff --git a/sys-fs/e4rat/files/e4rat-0.2.4-strdup.patch b/sys-fs/e4rat/files/e4rat-0.2.4-strdup.patch
new file mode 100644
index 000000000000..c3a9cd0e8ca0
--- /dev/null
+++ b/sys-fs/e4rat/files/e4rat-0.2.4-strdup.patch
@@ -0,0 +1,41 @@
+--- e4rat-0.2.4_pre20141201/src/e4rat-collect.cc.orig	2014-11-24 12:12:12.000000000 +0300
++++ e4rat-0.2.4_pre20141201/src/e4rat-collect.cc	2017-02-12 02:16:25.151757182 +0300
+@@ -32,6 +32,7 @@
+ #include <fcntl.h>
+ #include <fstream>
+ #include <signal.h>
++#include <cstring>
+ 
+ /* EXT2_SUPER_MAGIC */
+ #include <ext2fs/ext2_fs.h>
+@@ -361,7 +362,9 @@
+     {
+         create_pid_late = true;
+ 
+-        outPath = Config::get<std::string>("startup_log_file").c_str();
++        // It is unsafe to use Config::get<T>(arg)c_str() pointer
++        // directly, since it may be overwritten by later get calls.
++        outPath = strdup(Config::get<std::string>("startup_log_file").c_str());
+         verbose = 0;
+     }
+     else
+--- e4rat-0.2.4_pre20141201/src/e4rat-preload.cc.orig	2014-11-24 12:12:12.000000000 +0300
++++ e4rat-0.2.4_pre20141201/src/e4rat-preload.cc	2017-02-12 02:16:38.425552630 +0300
+@@ -25,6 +25,7 @@
+ 
+ #include <iostream>
+ #include <fstream>
++#include <cstring>
+ 
+ #include <sys/types.h>
+ #include <sys/stat.h>
+@@ -227,7 +228,8 @@
+     try {
+     if(getpid() == 1)
+     {
+-        const char* logfile = Config::get<std::string>("startup_log_file").c_str();
++        // pointer may change, string must be copied
++        const char* logfile = strdup(Config::get<std::string>("startup_log_file").c_str());
+         notice("Open %s ... ", logfile);
+         FILE* infile = fopen(logfile, "r");
+         if(!infile)