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Remove unused bubblewrap source

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Simon Fels 2016-12-15 08:29:14 +01:00
commit 4b63f8dca2
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5
README.md
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@ -76,9 +76,8 @@ will install the necessary bits into your system.
## Copyright and Licensing
Anbox reuses code from other projects like the Android Qemu emulator
or bubblewrap (https://github.com/projectatomic/bubblewrap). These
projects are available in the external/ subdirectory with the
Anbox reuses code from other projects like the Android Qemu emulator.
These projects are available in the external/ subdirectory with the
licensing terms included.
The anbox source itself (in src/) is licensed under the terms of

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external/CMakeLists.txt vendored
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@ -1,4 +1,3 @@
add_subdirectory(bubblewrap)
add_subdirectory(process-cpp-minimal)
add_subdirectory(android-emugl)
add_subdirectory(xdg)

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external/bubblewrap/.dir-locals.el vendored
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((c-mode . ((indent-tabs-mode . nil) (c-file-style . "gnu"))))

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external/bubblewrap/.editorconfig vendored
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[*.[ch]]
indent_style = space
indent_size = 2
trim_trailing_whitespace = true
indent_brace_style = gnu

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external/bubblewrap/.travis.yml vendored
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@ -1,25 +0,0 @@
language: c
dist: trusty
addons:
apt:
packages:
- automake
- autotools-dev
- libcap-dev
script:
- env NOCONFIGURE=1 ./autogen.sh
- mkdir build
- cd build && ../configure
- make -j 2
- make check
notifications:
# This is Colin's instance of Homu, in the future
# we'll move this to a production cluster.
webhooks: http://escher.verbum.org:54856/travis
email: false
branches:
only:
- auto

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external/bubblewrap/CMakeLists.txt vendored
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# Don't treat any warnings as error as we take the source directly from
# upstream and just compile it.
set(CMAKE_C_FLAGS "-Wall")
set(SOURCES
bind-mount.c
bubblewrap.c
network.c
utils.c)
set(HEADERS
config.h)
add_library(bwrap ${SOURCES} ${HEADERS})

481
external/bubblewrap/COPYING vendored
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@ -1,481 +0,0 @@
GNU LIBRARY GENERAL PUBLIC LICENSE
Version 2, June 1991
Copyright (C) 1991 Free Software Foundation, Inc.
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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[This is the first released version of the library GPL. It is
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1
external/bubblewrap/LICENSE vendored
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COPYING

13
external/bubblewrap/Makefile-bwrap.am vendored
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@ -1,13 +0,0 @@
bwrap_SOURCES = \
$(bwrap_srcpath)/bubblewrap.c \
$(bwrap_srcpath)/bind-mount.h \
$(bwrap_srcpath)/bind-mount.c \
$(bwrap_srcpath)/network.h \
$(bwrap_srcpath)/network.c \
$(bwrap_srcpath)/utils.h \
$(bwrap_srcpath)/utils.c \
$(NULL)
bwrap_CFLAGS = $(AM_CFLAGS)
bwrap_LDFLAGS = $(SELINUX_LIBS)

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external/bubblewrap/Makefile-docs.am vendored
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XSLTPROC = xsltproc
XSLTPROC_FLAGS = \
--nonet \
--stringparam man.output.quietly 1 \
--stringparam funcsynopsis.style ansi \
--stringparam man.th.extra1.suppress 1 \
--stringparam man.authors.section.enabled 0 \
--stringparam man.copyright.section.enabled 0
.xml.1:
$(XSLTPROC) $(XSLTPROC_FLAGS) http://docbook.sourceforge.net/release/xsl/current/manpages/docbook.xsl $<
if ENABLE_MAN
man_MANS = bwrap.1
CLEANFILES += $(man_MANS)
endif

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external/bubblewrap/Makefile.am vendored
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AM_CFLAGS = $(WARN_CFLAGS)
CLEANFILES =
GITIGNOREFILES = build-aux/ gtk-doc.make config.h.in aclocal.m4
bin_PROGRAMS = bwrap
bwrap_srcpath := $(srcdir)
include Makefile-bwrap.am
install-exec-hook:
if PRIV_MODE_SETUID
$(SUDO_BIN) chown root $(DESTDIR)$(bindir)/bwrap
$(SUDO_BIN) chmod u+s $(DESTDIR)$(bindir)/bwrap
else
if PRIV_MODE_FILECAPS
$(SUDO_BIN) setcap cap_sys_admin,cap_net_admin,cap_sys_chroot,cap_setuid,cap_setgid+ep $(DESTDIR)$(bindir)/bwrap
endif
endif
include Makefile-docs.am
TESTS = tests/test-basic.sh
TESTS_ENVIRONMENT = PATH=$$(cd $(top_builddir) && pwd):$${PATH}
if ENABLE_BASH_COMPLETION
bashcompletiondir = $(BASH_COMPLETION_DIR)
dist_bashcompletion_DATA = completions/bash/bwrap
endif
-include $(top_srcdir)/git.mk

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external/bubblewrap/README.md vendored
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@ -1,191 +0,0 @@
Bubblewrap
==========
Many container runtime tools like `systemd-nspawn`, `docker`,
etc. focus on providing infrastructure for system administrators and
orchestration tools (e.g. Kubernetes) to run containers.
These tools are not suitable to give to unprivileged users, because it
is trivial to turn such access into to a fully privileged root shell
on the host.
User namespaces
---------------
There is an effort in the Linux kernel called
[user namespaces](https://www.google.com/search?q=user+namespaces+site%3Ahttps%3A%2F%2Flwn.net)
which attempts to allow unprivileged users to use container features.
While significant progress has been made, there are
[still concerns](https://lwn.net/Articles/673597/) about it, and
it is not available to unprivileged users in several production distributions
such as CentOS/Red Hat Enterprise Linux 7, Debian Jessie, etc.
See for example
[CVE-2016-3135](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-3135)
which is a local root vulnerability introduced by userns.
[This March 2016 post](https://lkml.org/lkml/2016/3/9/555) has some
more discussion.
Bubblewrap could be viewed as setuid implementation of a *subset* of
user namespaces. Emphasis on subset - specifically relevant to the
above CVE, bubblewrap does not allow control over iptables.
The original bubblewrap code existed before user namespaces - it inherits code from
[xdg-app helper](https://cgit.freedesktop.org/xdg-app/xdg-app/tree/common/xdg-app-helper.c)
which in turn distantly derives from
[linux-user-chroot](https://git.gnome.org/browse/linux-user-chroot).
Security
--------
The maintainers of this tool believe that it does not, even when used
in combination with typical software installed on that distribution,
allow privilege escalation. It may increase the ability of a logged
in user to perform denial of service attacks, however.
In particular, bubblewrap uses `PR_SET_NO_NEW_PRIVS` to turn off
setuid binaries, which is the [traditional way](https://en.wikipedia.org/wiki/Chroot#Limitations) to get out of things
like chroots.
Users
-----
This program can be shared by all container tools which perform
non-root operation, such as:
- [xdg-app](https://cgit.freedesktop.org/xdg-app/xdg-app)
- [rpm-ostree unprivileged](https://github.com/projectatomic/rpm-ostree/pull/209)
We would also like to see this be available in Kubernetes/OpenShift
clusters. Having the ability for unprivileged users to use container
features would make it significantly easier to do interactive
debugging scenarios and the like.
Usage
-----
bubblewrap works by creating a new, completely empty, mount
namespace where the root is on a tmpfs that is invisible from the
host, and will be automatically cleaned up when the last process
exists. You can then use commandline options to construct the root
filesystem and process environment and command to run in the
namespace.
A simple example is
```
bwrap --ro-bind / / bash
```
This will create a read-only bind mount of the host root at the
sandbox root, and then start a bash.
Another simple example would be a read-write chroot operation:
```
bwrap --bind /some/chroot/dir / bash
```
A more complex example is to run a with a custom (readonly) /usr,
but your own (tmpfs) data, running in a PID and network namespace:
```
bwrap --ro-bind /usr /usr \
--tmpfs /tmp \
--proc /proc \
--dev /dev \
--ro-bind /etc/resolv.conf /etc/resolv.conf \
--symlink usr/lib /lib \
--symlink usr/lib64 /lib64 \
--symlink usr/bin /bin \
--symlink usr/sbin /sbin \
--chdir / \
--unshare-pid \
--unshare-net \
--dir /run/user/$(id -u) \
--setenv XDG_RUNTIME_DIR "/run/user/`id -u`" \
/bin/sh
```
Sandboxing
----------
The goal of bubblewrap is to run an application in a sandbox, where it
has restricted access to parts of the operating system or user data
such as the home directory.
bubblewrap always creates a new mount namespace, and the user can specify
exactly what parts of the filesystem should be visible in the sandbox.
Any such directories you specify mounted `nodev` by default, and can be made readonly.
Additionally you can use these kernel features:
User namespaces ([CLONE_NEWUSER](http://linux.die.net/man/2/clone)): This hides all but the current uid and gid from the
sandbox. You can also change what the value of uid/gid should be in the sandbox.
IPC namespaces ([CLONE_NEWIPC](http://linux.die.net/man/2/clone)): The sandbox will get its own copy of all the
different forms of IPCs, like SysV shared memory and semaphores.
PID namespaces ([CLONE_NEWPID](http://linux.die.net/man/2/clone)): The sandbox will not see any processes outside the sandbox. Additionally, bubblewrap will run a trivial pid1 inside your container to handle the requirements of reaping children in the sandbox. .This avoids what is known now as the [Docker pid 1 problem](https://blog.phusion.nl/2015/01/20/docker-and-the-pid-1-zombie-reaping-problem/).
Network namespaces ([CLONE_NEWNET](http://linux.die.net/man/2/clone)): The sandbox will not see the network. Instead it will have its own network namespace with only a loopback device.
UTS namespace ([CLONE_NEWUTS](http://linux.die.net/man/2/clone)): The sandbox will have its own hostname.
Seccomp filters: You can pass in seccomp filters that limit which syscalls can be done in the sandbox. For more information, see [Seccomp](https://en.wikipedia.org/wiki/Seccomp).
Related project comparison: Firejail
------------------------------------
[Firejail](https://github.com/netblue30/firejail/tree/master/src/firejail) is
similar to xdg-app before bubblewrap was split out in that it combines
a setuid tool with a lot of desktop-specific sandboxing features. For
example, Firejail knows about Pulseaudio, whereas bubblewrap does not.
The bubblewrap authors believe it's much easier to audit a small
setuid program, and keep features such as Pulseaudio filtering as an
unprivileged process, as now occurs in xdg-app.
Also, @cgwalters thinks trying to
[whitelist file paths](https://github.com/netblue30/firejail/blob/37a5a3545ef6d8d03dad8bbd888f53e13274c9e5/src/firejail/fs_whitelist.c#L176)
is a bad idea given the myriad ways users have to manipulate paths,
and the myriad ways in which system administrators may configure a
system. The bubblewrap approach is to only retain a few specific
Linux capabilities such as `CAP_SYS_ADMIN`, but to always access the
filesystem as the invoking uid. This entirely closes
[TOCTOCU attacks](https://cwe.mitre.org/data/definitions/367.html) and
such.
Related project comparison: Sandstorm.io
----------------------------------------
[Sandstorm.io](https://sandstorm.io/) also has a setuid helper
process. @cgwalters believes their setuid code is fairly good, but it
could still make sense to unify on bubblewrap as a setuid core. That
hasn't been ruled out, but neither is it being actively pursued today.
Related project comparison: runc/binctr
----------------------------------------
[runc](https://github.com/opencontainers/runc) is similar to
[systemd nspawn](https://www.freedesktop.org/software/systemd/man/systemd-nspawn.html)
in that it is tooling intended to be invoked by root. There is an
effort to have runc optionally use
[user namespaces](https://github.com/opencontainers/runc/issues/38),
but no plans for any setuid support.
The bubblewrap authors believe that runc and systemd-nspawn are not
designed to be made setuid and are distant from supporting such a
mode.
[binctr](https://github.com/jfrazelle/binctr) is just a wrapper for
runc, so inherits all of its design tradeoffs.
Whats with the name ?!
----------------------
The name bubblewrap was chosen to convey that this
tool runs as the parent of the application (so wraps it in some sense) and creates
a protective layer (the sandbox) around it.
![](bubblewrap.jpg)
(Bubblewrap cat by [dancing_stupidity](https://www.flickr.com/photos/27549668@N03/))

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#!/bin/sh
test -n "$srcdir" || srcdir=`dirname "$0"`
test -n "$srcdir" || srcdir=.
olddir=`pwd`
cd $srcdir
if ! (autoreconf --version >/dev/null 2>&1); then
echo "*** No autoreconf found, please install it ***"
exit 1
fi
mkdir -p m4
autoreconf --force --install --verbose
cd $olddir
test -n "$NOCONFIGURE" || "$srcdir/configure" "$@"

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/* bubblewrap
* Copyright (C) 2016 Alexander Larsson
*
* This program 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 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, see <http://www.gnu.org/licenses/>.
*
*/
#include "config.h"
#include <sys/mount.h>
#include "utils.h"
#include "bind-mount.h"
static char *
skip_line (char *line)
{
while (*line != 0 && *line != '\n')
line++;
if (*line == '\n')
line++;
return line;
}
static char *
skip_token (char *line, bool eat_whitespace)
{
while (*line != ' ' && *line != '\n')
line++;
if (eat_whitespace && *line == ' ')
line++;
return line;
}
static char *
unescape_mountpoint (const char *escaped, ssize_t len)
{
char *unescaped, *res;
const char *end;
if (len < 0)
len = strlen (escaped);
end = escaped + len;
unescaped = res = xmalloc (len + 1);
while (escaped < end)
{
if (*escaped == '\\')
{
*unescaped++ =
((escaped[1] - '0') << 6) |
((escaped[2] - '0') << 3) |
((escaped[3] - '0') << 0);
escaped += 4;
}
else
{
*unescaped++ = *escaped++;
}
}
*unescaped = 0;
return res;
}
static char *
get_mountinfo (int proc_fd,
const char *mountpoint)
{
char *line_mountpoint, *line_mountpoint_end;
cleanup_free char *mountinfo = NULL;
cleanup_free char *free_me = NULL;
char *line, *line_start;
char *res = NULL;
int i;
if (mountpoint[0] != '/')
{
cleanup_free char *cwd = getcwd (NULL, 0);
if (cwd == NULL)
die_oom ();
mountpoint = free_me = strconcat3 (cwd, "/", mountpoint);
}
mountinfo = load_file_at (proc_fd, "self/mountinfo");
if (mountinfo == NULL)
return NULL;
line = mountinfo;
while (*line != 0)
{
cleanup_free char *unescaped = NULL;
line_start = line;
for (i = 0; i < 4; i++)
line = skip_token (line, TRUE);
line_mountpoint = line;
line = skip_token (line, FALSE);
line_mountpoint_end = line;
line = skip_line (line);
unescaped = unescape_mountpoint (line_mountpoint, line_mountpoint_end - line_mountpoint);
if (strcmp (mountpoint, unescaped) == 0)
{
res = line_start;
line[-1] = 0;
/* Keep going, because we want to return the *last* match */
}
}
if (res)
return xstrdup (res);
return NULL;
}
static unsigned long
get_mountflags (int proc_fd,
const char *mountpoint)
{
cleanup_free char *line = NULL;
char *token, *end_token;
int i;
unsigned long flags = 0;
static const struct { int flag;
char *name;
} flags_data[] = {
{ 0, "rw" },
{ MS_RDONLY, "ro" },
{ MS_NOSUID, "nosuid" },
{ MS_NODEV, "nodev" },
{ MS_NOEXEC, "noexec" },
{ MS_NOATIME, "noatime" },
{ MS_NODIRATIME, "nodiratime" },
{ MS_RELATIME, "relatime" },
{ 0, NULL }
};
line = get_mountinfo (proc_fd, mountpoint);
if (line == NULL)
return 0;
token = line;
for (i = 0; i < 5; i++)
token = skip_token (token, TRUE);
end_token = skip_token (token, FALSE);
*end_token = 0;
do
{
end_token = strchr (token, ',');
if (end_token != NULL)
*end_token = 0;
for (i = 0; flags_data[i].name != NULL; i++)
if (strcmp (token, flags_data[i].name) == 0)
flags |= flags_data[i].flag;
if (end_token)
token = end_token + 1;
else
token = NULL;
}
while (token != NULL);
return flags;
}
static char **
get_submounts (int proc_fd,
const char *parent_mount)
{
char *mountpoint, *mountpoint_end;
char **submounts;
int i, n_submounts, submounts_size;
cleanup_free char *mountinfo = NULL;
char *line;
mountinfo = load_file_at (proc_fd, "self/mountinfo");
if (mountinfo == NULL)
return NULL;
submounts_size = 8;
n_submounts = 0;
submounts = xmalloc (sizeof (char *) * submounts_size);
line = mountinfo;
while (*line != 0)
{
cleanup_free char *unescaped = NULL;
for (i = 0; i < 4; i++)
line = skip_token (line, TRUE);
mountpoint = line;
line = skip_token (line, FALSE);
mountpoint_end = line;
line = skip_line (line);
*mountpoint_end = 0;
unescaped = unescape_mountpoint (mountpoint, -1);
if (has_path_prefix (unescaped, parent_mount))
{
if (n_submounts + 1 >= submounts_size)
{
submounts_size *= 2;
submounts = xrealloc (submounts, sizeof (char *) * submounts_size);
}
submounts[n_submounts++] = xstrdup (unescaped);
}
}
submounts[n_submounts] = NULL;
return submounts;
}
int
bind_mount (int proc_fd,
const char *src,
const char *dest,
bind_option_t options)
{
bool readonly = (options & BIND_READONLY) != 0;
bool devices = (options & BIND_DEVICES) != 0;
bool recursive = (options & BIND_RECURSIVE) != 0;
unsigned long current_flags, new_flags;
int i;
if (mount (src, dest, NULL, MS_MGC_VAL | MS_BIND | (recursive ? MS_REC : 0), NULL) != 0)
return 1;
current_flags = get_mountflags (proc_fd, dest);
new_flags = current_flags | (devices ? 0 : MS_NODEV) | MS_NOSUID | (readonly ? MS_RDONLY : 0);
if (new_flags != current_flags &&
mount ("none", dest,
NULL, MS_MGC_VAL | MS_BIND | MS_REMOUNT | new_flags, NULL) != 0)
return 3;
/* We need to work around the fact that a bind mount does not apply the flags, so we need to manually
* apply the flags to all submounts in the recursive case.
* Note: This does not apply the flags to mounts which are later propagated into this namespace.
*/
if (recursive)
{
cleanup_strv char **submounts = get_submounts (proc_fd, dest);
if (submounts == NULL)
return 4;
for (i = 0; submounts[i] != NULL; i++)
{
current_flags = get_mountflags (proc_fd, submounts[i]);
new_flags = current_flags | (devices ? 0 : MS_NODEV) | MS_NOSUID | (readonly ? MS_RDONLY : 0);
if (new_flags != current_flags &&
mount ("none", submounts[i],
NULL, MS_MGC_VAL | MS_BIND | MS_REMOUNT | new_flags, NULL) != 0)
{
/* If we can't read the mountpoint we can't remount it, but that should
be safe to ignore because its not something the user can access. */
if (errno != EACCES)
return 5;
}
}
}
return 0;
}

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/* bubblewrap
* Copyright (C) 2016 Alexander Larsson
*
* This program 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 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, see <http://www.gnu.org/licenses/>.
*
*/
#pragma once
typedef enum {
BIND_READONLY = (1 << 0),
BIND_DEVICES = (1 << 2),
BIND_RECURSIVE = (1 << 3),
} bind_option_t;
int bind_mount (int proc_fd,
const char *src,
const char *dest,
bind_option_t options);

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<?xml version="1.0"?>
<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.3//EN"
"http://www.oasis-open.org/docbook/xml/4.3/docbookx.dtd" [
]>
<refentry id="bwrap">
<refentryinfo>
<title>bwrap</title>
<productname>Project Atomic</productname>
<authorgroup>
<author>
<contrib>Developer</contrib>
<firstname>Alexander</firstname>
<surname>Larsson</surname>
</author>
<author>
<contrib>Developer</contrib>
<firstname>Colin</firstname>
<surname>Walters</surname>
</author>
</authorgroup>
</refentryinfo>
<refmeta>
<refentrytitle>bwrap</refentrytitle>
<manvolnum>1</manvolnum>
<refmiscinfo class="manual">User Commands</refmiscinfo>
</refmeta>
<refnamediv>
<refname>bwrap</refname>
<refpurpose>container setup utility</refpurpose>
</refnamediv>
<refsynopsisdiv>
<cmdsynopsis>
<command>bwrap</command>
<arg choice="opt" rep="repeat"><replaceable>OPTION</replaceable></arg>
<arg choice="opt"><replaceable>COMMAND</replaceable></arg>
</cmdsynopsis>
</refsynopsisdiv>
<refsect1><title>Description</title>
<para>
<command>bwrap</command> is a privileged helper for container setup. You
are unlikely to use it directly from the commandline, although that is possible.
</para>
<para>
It works by creating a new, completely empty, filesystem namespace where the root
is on a tmpfs that is invisible from the host, and which will be automatically
cleaned up when the last process exists. You can then use commandline options to
construct the root filesystem and process environment for the command to run in
the namespace.
</para>
<para>
By default, <command>bwrap</command> creates a new user namespace for the sandbox.
Optionally it also sets up new ipc, pid, network and uts namespaces. The application
in the sandbox can be made to run with a different UID and GID.
</para>
<para>
If needed (e.g. when using a PID namespace) <command>bwrap</command>
is running a minimal pid 1 process in the sandbox that is
responsible for reaping zombies. It also detects when the initial
application process (pid 2) dies and reports its exit status back to
the original spawner. The pid 1 process exits to clean up the
sandbox when there are no other processes in the sandbox left.
</para>
</refsect1>
<refsect1><title>Options</title>
<para>
When options are used multiple times, the last option wins, unless otherwise
specified.
</para>
<para>General options:</para>
<variablelist>
<varlistentry>
<term><option>--help</option></term>
<listitem><para>Print help and exit</para></listitem>
</varlistentry>
<varlistentry>
<term><option>--version</option></term>
<listitem><para>Print version</para></listitem>
</varlistentry>
<varlistentry>
<term><option>--args <arg choice="plain">FD</arg></option></term>
<listitem><para>
Parse nul-separated arguments from the given file descriptor.
This option can be used multiple times to parse options from
multiple sources.
</para></listitem>
</varlistentry>
</variablelist>
<para>Options related to kernel namespaces:</para>
<variablelist>
<varlistentry>
<term><option>--share-user</option></term>
<listitem><para>Don't create a new user namespace</para></listitem>
</varlistentry>
<varlistentry>
<term><option>--unshare-ipc</option></term>
<listitem><para>Create a new ipc namespace</para></listitem>
</varlistentry>
<varlistentry>
<term><option>--unshare-pid</option></term>
<listitem><para>Create a new pid namespace</para></listitem>
</varlistentry>
<varlistentry>
<term><option>--unshare-net</option></term>
<listitem><para>Create a new network namespace</para></listitem>
</varlistentry>
<varlistentry>
<term><option>--unshare-uts</option></term>
<listitem><para>Create a new uts namespace</para></listitem>
</varlistentry>
<varlistentry>
<term><option>--unshare-cgroup</option></term>
<listitem><para>Create a new cgroup namespace</para></listitem>
</varlistentry>
<varlistentry>
<term><option>--unshare-cgroup-try</option></term>
<listitem><para>Create a new cgroup namespace if possible else skip it</para></listitem>
</varlistentry>
<varlistentry>
<term><option>--uid <arg choice="plain">UID</arg></option></term>
<listitem><para>Use a custom user id in the sandbox (incompatible with <option>--share-user</option>)</para></listitem>
</varlistentry>
<varlistentry>
<term><option>--gid <arg choice="plain">GID</arg></option></term>
<listitem><para>Use a custom group id in the sandbox (incompatible with <option>--share-user</option>)</para></listitem>
</varlistentry>
</variablelist>
<para>Options about environment setup:</para>
<variablelist>
<varlistentry>
<term><option>--chdir <arg choice="plain">DIR</arg></option></term>
<listitem><para>Change directory to <arg choice="plain">DIR</arg></para></listitem>
</varlistentry>
<varlistentry>
<term><option>--setenv <arg choice="plain">VAR</arg> <arg choice="plain">VALUE</arg></option></term>
<listitem><para>Set an environment variable</para></listitem>
</varlistentry>
<varlistentry>
<term><option>--unsetenv <arg choice="plain">VAR</arg></option></term>
<listitem><para>Unset an environment variable</para></listitem>
</varlistentry>
</variablelist>
<para>Options for monitoring the sandbox from the outside:</para>
<variablelist>
<varlistentry>
<term><option>--lock-file <arg choice="plain">DEST</arg></option></term>
<listitem><para>
Take a lock on <arg choice="plain">DEST</arg> while the sandbox is running.
This option can be used multiple times to take locks on multiple files.
</para></listitem>
</varlistentry>
<varlistentry>
<term><option>--sync-fd <arg choice="plain">FD</arg></option></term>
<listitem><para>Keep this file descriptor open while the sandbox is running</para></listitem>
</varlistentry>
</variablelist>
<para>
Filesystem related options. These are all operations that modify the filesystem directly, or
mounts stuff in the filesystem. These are applied in the order they are given as arguments.
Any missing parent directories that are required to create a specified destination are
automatically created as needed.
</para>
<variablelist>
<varlistentry>
<term><option>--bind <arg choice="plain">SRC</arg> <arg choice="plain">DEST</arg></option></term>
<listitem><para>Bind mount the host path <arg choice="plain">SRC</arg> on <arg choice="plain">DEST</arg></para></listitem>
</varlistentry>
<varlistentry>
<term><option>--dev-bind <arg choice="plain">SRC</arg> <arg choice="plain">DEST</arg></option></term>
<listitem><para>Bind mount the host path <arg choice="plain">SRC</arg> on <arg choice="plain">DEST</arg>, allowing device access</para></listitem>
</varlistentry>
<varlistentry>
<term><option>--ro-bind <arg choice="plain">SRC</arg> <arg choice="plain">DEST</arg></option></term>
<listitem><para>Bind mount the host path <arg choice="plain">SRC</arg> readonly on <arg choice="plain">DEST</arg></para></listitem>
</varlistentry>
<varlistentry>
<term><option>--proc <arg choice="plain">DEST</arg></option></term>
<listitem><para>Mount procfs on <arg choice="plain">DEST</arg></para></listitem>
</varlistentry>
<varlistentry>
<term><option>--dev <arg choice="plain">DEST</arg></option></term>
<listitem><para>Mount new devtmpfs on <arg choice="plain">DEST</arg></para></listitem>
</varlistentry>
<varlistentry>
<term><option>--tmpfs <arg choice="plain">DEST</arg></option></term>
<listitem><para>Mount new tmpfs on <arg choice="plain">DEST</arg></para></listitem>
</varlistentry>
<varlistentry>
<term><option>--mqueue <arg choice="plain">DEST</arg></option></term>
<listitem><para>Mount new mqueue on <arg choice="plain">DEST</arg></para></listitem>
</varlistentry>
<varlistentry>
<term><option>--dir <arg choice="plain">DEST</arg></option></term>
<listitem><para>Create a directory at <arg choice="plain">DEST</arg></para></listitem>
</varlistentry>
<varlistentry>
<term><option>--file <arg choice="plain">FD</arg> <arg choice="plain">DEST</arg></option></term>
<listitem><para>Copy from the file descriptor <arg choice="plain">FD</arg> to <arg choice="plain">DEST</arg></para></listitem>
</varlistentry>
<varlistentry>
<term><option>--bind-data <arg choice="plain">FD</arg> <arg choice="plain">DEST</arg></option></term>
<listitem><para>Copy from the file descriptor <arg choice="plain">FD</arg> to a file which is bind-mounted on <arg choice="plain">DEST</arg></para></listitem>
</varlistentry>
<varlistentry>
<term><option>--symlink <arg choice="plain">SRC</arg> <arg choice="plain">DEST</arg></option></term>
<listitem><para>Create a symlink at <arg choice="plain">DEST</arg> with target <arg choice="plain">SRC</arg></para></listitem>
</varlistentry>
</variablelist>
<para>Lockdown options:</para>
<variablelist>
<varlistentry>
<term><option>--seccomp <arg choice="plain">FD</arg></option></term>
<listitem><para>
Load and use seccomp rules from <arg choice="plain">FD</arg>.
The rules need to be in the form of a compiled eBPF program,
as generated by seccomp_export_bpf.
</para></listitem>
</varlistentry>
<varlistentry>
<term><option>--exec-label <arg choice="plain">LABEL</arg></option></term>
<listitem><para>
Exec Label from the sandbox. On an SELinux system you can specify the SELinux
context for the sandbox process(s).
</para></listitem>
</varlistentry>
<varlistentry>
<term><option>--file-label <arg choice="plain">LABEL</arg></option></term>
<listitem><para>
File label for temporary sandbox content. On an SELinux system you can specify
the SELinux context for the sandbox content.
</para></listitem>
</varlistentry>
</variablelist>
</refsect1>
<refsect1>
<title>Environment</title>
<variablelist>
<varlistentry>
<term><envar>HOME</envar></term>
<listitem><para>
Used as the cwd in the sandbox if <option>--cwd</option> has not been
explicitly specified and the current cwd is not present inside the sandbox.
The <option>--setenv</option> option can be used to override the value
that is used here.
</para></listitem>
</varlistentry>
</variablelist>
</refsect1>
<refsect1>
<title>Exit status</title>
<para>
The <command>bwrap</command> command returns the exit status of the
initial application process (pid 2 in the sandbox).
</para>
</refsect1>
</refentry>

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external/bubblewrap/completions/bash/bwrap vendored
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@ -1,52 +0,0 @@
#!/bin/bash
#
# bash completion file for bubblewrap commands
#
_bwrap() {
local cur prev words cword
_init_completion || return
local boolean_options="
--help
--share-user
--unshare-ipc
--unshare-net
--unshare-pid
--unshare-uts
--version
"
local options_with_args="
$boolean_optons
--args
--bind
--bind-data
--chdir
--dev
--dev-bind
--dir
--exec-label
--file
--file-label
--gid
--lock-file
--proc
--ro-bind
--seccomp
--setenv
--symlink
--sync-fd
--uid
--unsetenv
--seccomp
--symlink
"
if [[ "$cur" == -* ]]; then
COMPREPLY=( $( compgen -W "$boolean_options $options_with_args" -- "$cur" ) )
fi
return 0
}
complete -F _bwrap bwrap

5
external/bubblewrap/config.h vendored
View file

@ -1,5 +0,0 @@
#ifndef _GNU_SOURCE
# define _GNU_SOURCE 1
#endif
#define PACKAGE_STRING "bubblewrap 0.1"

103
external/bubblewrap/configure.ac vendored
View file

@ -1,103 +0,0 @@
AC_PREREQ([2.63])
AC_INIT([bubblewrap], [0.1], [alexl@redhat.com])
AC_CONFIG_HEADER([config.h])
AC_CONFIG_MACRO_DIR([m4])
AC_CONFIG_AUX_DIR([build-aux])
AC_USE_SYSTEM_EXTENSIONS
AM_INIT_AUTOMAKE([1.11 -Wno-portability foreign no-define tar-ustar no-dist-gzip dist-xz])
AM_MAINTAINER_MODE([enable])
AM_SILENT_RULES([yes])
AC_SYS_LARGEFILE
AC_PROG_CC
AM_PROG_CC_C_O
AC_CHECK_HEADERS([sys/capability.h], [], [AC_MSG_ERROR([*** POSIX caps headers not found])])
AC_ARG_ENABLE(man,
[AS_HELP_STRING([--enable-man],
[generate man pages [default=auto]])],,
enable_man=maybe)
AS_IF([test "$enable_man" != no], [
AC_PATH_PROG([XSLTPROC], [xsltproc], [])
AS_IF([test -z "$XSLTPROC"], [
AS_IF([test "$enable_man" = yes], [
AC_MSG_ERROR([xsltproc is required for --enable-man])
])
enable_man=no
], [
enable_man=yes
])
])
AM_CONDITIONAL(ENABLE_MAN, test "$enable_man" != no)
AC_ARG_WITH([bash-completion-dir],
AS_HELP_STRING([--with-bash-completion-dir[=PATH]],
[Install the bash auto-completion script in this directory. @<:@default=yes@:>@]),
[],
[with_bash_completion_dir=yes])
if test "x$with_bash_completion_dir" = "xyes"; then
PKG_CHECK_MODULES([BASH_COMPLETION], [bash-completion >= 2.0],
[BASH_COMPLETION_DIR="`pkg-config --variable=completionsdir bash-completion`"],
[BASH_COMPLETION_DIR="$datadir/bash-completion/completions"])
else
BASH_COMPLETION_DIR="$with_bash_completion_dir"
fi
AC_SUBST([BASH_COMPLETION_DIR])
AM_CONDITIONAL([ENABLE_BASH_COMPLETION],[test "x$with_bash_completion_dir" != "xno"])
# ------------------------------------------------------------------------------
have_selinux=no
AC_ARG_ENABLE(selinux, AS_HELP_STRING([--disable-selinux], [Disable optional SELINUX support]))
if test "x$enable_selinux" != "xno"; then
PKG_CHECK_MODULES([SELINUX], [libselinux >= 2.1.9],
[AC_DEFINE(HAVE_SELINUX, 1, [Define if SELinux is available])
have_selinux=yes
M4_DEFINES="$M4_DEFINES -DHAVE_SELINUX"],
[have_selinux=no])
if test "x$have_selinux" = xno -a "x$enable_selinux" = xyes; then
AC_MSG_ERROR([*** SELinux support requested but libraries not found])
fi
fi
AM_CONDITIONAL(HAVE_SELINUX, [test "$have_selinux" = "yes"])
changequote(,)dnl
if test "x$GCC" = "xyes"; then
WARN_CFLAGS="-Wall -Werror=missing-prototypes"
fi
changequote([,])dnl
AC_SUBST(WARN_CFLAGS)
AC_ARG_WITH(priv-mode,
AS_HELP_STRING([--with-priv-mode=setuid/caps/none],
[How to set privilege-raising during make install)]),
[],
[with_priv_mode="none"])
AM_CONDITIONAL(PRIV_MODE_FILECAPS, test "x$with_priv_mode" = "xcaps")
AM_CONDITIONAL(PRIV_MODE_SETUID, test "x$with_priv_mode" = "xsetuid")
AC_ARG_ENABLE(sudo,
AS_HELP_STRING([--enable-sudo],[Use sudo to set privileged mode on binaries during install (only needed if --with-priv-mode used)]),
[SUDO_BIN="sudo"], [SUDO_BIN=""])
AC_SUBST([SUDO_BIN])
AC_CONFIG_FILES([
Makefile
])
AC_OUTPUT
echo "
bubblewrap $VERSION
===================
man pages (xsltproc): $enable_man
SELinux: $have_selinux
setuid mode on make install: $with_priv_mode
mysteriously satisfying to pop: yes"
echo ""

21
external/bubblewrap/demos/bubblewrap-shell.sh vendored
View file

@ -1,21 +0,0 @@
#!/usr/bin/env bash
# Use bubblewrap to run /bin/sh in the host's rootfs.
set -euo pipefail
(exec bwrap --ro-bind /usr /usr \
--dir /tmp \
--proc /proc \
--dev /dev \
--ro-bind /etc/resolv.conf /etc/resolv.conf \
--symlink usr/lib /lib \
--symlink usr/lib64 /lib64 \
--symlink usr/bin /bin \
--symlink usr/sbin /sbin \
--chdir / \
--unshare-pid \
--dir /run/user/$(id -u) \
--setenv XDG_RUNTIME_DIR "/run/user/`id -u`" \
--file 11 /etc/passwd \
--file 12 /etc/group \
/bin/sh) \
11< <(getent passwd $UID 65534) \
12< <(getent group $(id -g) 65534)

65
external/bubblewrap/demos/xdg-app-run.sh vendored
View file

@ -1,65 +0,0 @@
#!/bin/bash
# For this to work you first have to run these commands:
# curl -O http://sdk.gnome.org/nightly/keys/nightly.gpg
# xdg-app --user remote-add --gpg-key=nightly.gpg gnome-nightly http://sdk.gnome.org/nightly/repo/
# xdg-app --user install gnome-nightly org.gnome.Platform
# xdg-app --user install gnome-nightly org.gnome.Weather
mkdir -p ~/.var/app/org.gnome.Weather/cache ~/.var/app/org.gnome.Weather/config ~/.var/app/org.gnome.Weather/data
(
exec bwrap \
--ro-bind ~/.local/share/xdg-app/runtime/org.gnome.Platform/x86_64/master/active/files /usr \
--lock-file /usr/.ref \
--ro-bind ~/.local/share/xdg-app/app/org.gnome.Weather/x86_64/master/active/files/ /app \
--lock-file /app/.ref \
--dev /dev \
--proc /proc \
--dir /tmp \
--symlink /tmp /var/tmp \
--symlink /run /var/run \
--symlink usr/lib /lib \
--symlink usr/lib64 /lib64 \
--symlink usr/bin /bin \
--symlink usr/sbin /sbin \
--symlink usr/etc /etc \
--dir /run/user/`id -u` \
--ro-bind /etc/machine-id /usr/etc/machine-id \
--ro-bind /etc/resolv.conf /run/host/monitor/resolv.conf \
--ro-bind /sys/block /sys/block \
--ro-bind /sys/bus /sys/bus \
--ro-bind /sys/class /sys/class \
--ro-bind /sys/dev /sys/dev \
--ro-bind /sys/devices /sys/devices \
--dev-bind /dev/dri /dev/dri \
--bind /tmp/.X11-unix/X0 /tmp/.X11-unix/X99 \
--bind ~/.var/app/org.gnome.Weather ~/.var/app/org.gnome.Weather \
--bind ~/.config/dconf ~/.config/dconf \
--bind /run/user/`id -u`/dconf /run/user/`id -u`/dconf \
--unshare-pid \
--setenv XDG_RUNTIME_DIR "/run/user/`id -u`" \
--setenv DISPLAY :99 \
--setenv GI_TYPELIB_PATH /app/lib/girepository-1.0 \
--setenv GST_PLUGIN_PATH /app/lib/gstreamer-1.0 \
--setenv LD_LIBRARY_PATH /app/lib:/usr/lib/GL \
--setenv DCONF_USER_CONFIG_DIR .config/dconf \
--setenv PATH /app/bin:/usr/bin \
--setenv XDG_CONFIG_DIRS /app/etc/xdg:/etc/xdg \
--setenv XDG_DATA_DIRS /app/share:/usr/share \
--setenv SHELL /bin/sh \
--setenv XDG_CACHE_HOME ~/.var/app/org.gnome.Weather/cache \
--setenv XDG_CONFIG_HOME ~/.var/app/org.gnome.Weather/config \
--setenv XDG_DATA_HOME ~/.var/app/org.gnome.Weather/data \
--file 10 /run/user/`id -u`/xdg-app-info \
--bind-data 11 /usr/etc/passwd \
--bind-data 12 /usr/etc/group \
--seccomp 13 \
/bin/sh) \
11< <(getent passwd $UID 65534 ) \
12< <(getent group $(id -g) 65534) \
13< `dirname $0`/xdg-app.bpf \
10<<EOF
[Application]
name=org.gnome.Weather
runtime=runtime/org.gnome.Platform/x86_64/master
EOF

BIN
external/bubblewrap/demos/xdg-app.bpf vendored
View file

Binary file not shown.

348
external/bubblewrap/git.mk vendored
View file

@ -1,348 +0,0 @@
# git.mk, a small Makefile to autogenerate .gitignore files
# for autotools-based projects.
#
# Copyright 2009, Red Hat, Inc.
# Copyright 2010,2011,2012,2013 Behdad Esfahbod
# Written by Behdad Esfahbod
#
# Copying and distribution of this file, with or without modification,
# is permitted in any medium without royalty provided the copyright
# notice and this notice are preserved.
#
# The latest version of this file can be downloaded from:
GIT_MK_URL = https://raw.githubusercontent.com/behdad/git.mk/master/git.mk
#
# Bugs, etc, should be reported upstream at:
# https://github.com/behdad/git.mk
#
# To use in your project, import this file in your git repo's toplevel,
# then do "make -f git.mk". This modifies all Makefile.am files in
# your project to -include git.mk. Remember to add that line to new
# Makefile.am files you create in your project, or just rerun the
# "make -f git.mk".
#
# This enables automatic .gitignore generation. If you need to ignore
# more files, add them to the GITIGNOREFILES variable in your Makefile.am.
# But think twice before doing that. If a file has to be in .gitignore,
# chances are very high that it's a generated file and should be in one
# of MOSTLYCLEANFILES, CLEANFILES, DISTCLEANFILES, or MAINTAINERCLEANFILES.
#
# The only case that you need to manually add a file to GITIGNOREFILES is
# when remove files in one of mostlyclean-local, clean-local, distclean-local,
# or maintainer-clean-local make targets.
#
# Note that for files like editor backup, etc, there are better places to
# ignore them. See "man gitignore".
#
# If "make maintainer-clean" removes the files but they are not recognized
# by this script (that is, if "git status" shows untracked files still), send
# me the output of "git status" as well as your Makefile.am and Makefile for
# the directories involved and I'll diagnose.
#
# For a list of toplevel files that should be in MAINTAINERCLEANFILES, see
# Makefile.am.sample in the git.mk git repo.
#
# Don't EXTRA_DIST this file. It is supposed to only live in git clones,
# not tarballs. It serves no useful purpose in tarballs and clutters the
# build dir.
#
# This file knows how to handle autoconf, automake, libtool, gtk-doc,
# gnome-doc-utils, yelp.m4, mallard, intltool, gsettings, dejagnu, appdata,
# appstream.
#
# This makefile provides the following targets:
#
# - all: "make all" will build all gitignore files.
# - gitignore: makes all gitignore files in the current dir and subdirs.
# - .gitignore: make gitignore file for the current dir.
# - gitignore-recurse: makes all gitignore files in the subdirs.
#
# KNOWN ISSUES:
#
# - Recursive configure doesn't work as $(top_srcdir)/git.mk inside the
# submodule doesn't find us. If you have configure.{in,ac} files in
# subdirs, add a proxy git.mk file in those dirs that simply does:
# "include $(top_srcdir)/../git.mk". Add more ..'s to your taste.
# And add those files to git. See vte/gnome-pty-helper/git.mk for
# example.
#
###############################################################################
# Variables user modules may want to add to toplevel MAINTAINERCLEANFILES:
###############################################################################
#
# Most autotools-using modules should be fine including this variable in their
# toplevel MAINTAINERCLEANFILES:
GITIGNORE_MAINTAINERCLEANFILES_TOPLEVEL = \
$(srcdir)/aclocal.m4 \
$(srcdir)/autoscan.log \
$(srcdir)/configure.scan \
`AUX_DIR=$(srcdir)/$$(cd $(top_srcdir); $(AUTOCONF) --trace 'AC_CONFIG_AUX_DIR:$$1' ./configure.ac); \
test "x$$AUX_DIR" = "x$(srcdir)/" && AUX_DIR=$(srcdir); \
for x in \
ar-lib \
compile \
config.guess \
config.sub \
depcomp \
install-sh \
ltmain.sh \
missing \
mkinstalldirs \
test-driver \
ylwrap \
; do echo "$$AUX_DIR/$$x"; done` \
`cd $(top_srcdir); $(AUTOCONF) --trace 'AC_CONFIG_HEADERS:$$1' ./configure.ac | \
head -n 1 | while read f; do echo "$(srcdir)/$$f.in"; done`
#
# All modules should also be fine including the following variable, which
# removes automake-generated Makefile.in files:
GITIGNORE_MAINTAINERCLEANFILES_MAKEFILE_IN = \
`cd $(top_srcdir); $(AUTOCONF) --trace 'AC_CONFIG_FILES:$$1' ./configure.ac | \
while read f; do \
case $$f in Makefile|*/Makefile) \
test -f "$(srcdir)/$$f.am" && echo "$(srcdir)/$$f.in";; esac; \
done`
#
# Modules that use libtool and use AC_CONFIG_MACRO_DIR() may also include this,
# though it's harmless to include regardless.
GITIGNORE_MAINTAINERCLEANFILES_M4_LIBTOOL = \
`MACRO_DIR=$(srcdir)/$$(cd $(top_srcdir); $(AUTOCONF) --trace 'AC_CONFIG_MACRO_DIR:$$1' ./configure.ac); \
if test "x$$MACRO_DIR" != "x$(srcdir)/"; then \
for x in \
libtool.m4 \
ltoptions.m4 \
ltsugar.m4 \
ltversion.m4 \
lt~obsolete.m4 \
; do echo "$$MACRO_DIR/$$x"; done; \
fi`
###############################################################################
# Default rule is to install ourselves in all Makefile.am files:
###############################################################################
git-all: git-mk-install
git-mk-install:
@echo "Installing git makefile"
@any_failed=; \
find "`test -z "$(top_srcdir)" && echo . || echo "$(top_srcdir)"`" -name Makefile.am | while read x; do \
if grep 'include .*/git.mk' $$x >/dev/null; then \
echo "$$x already includes git.mk"; \
else \
failed=; \
echo "Updating $$x"; \
{ cat $$x; \
echo ''; \
echo '-include $$(top_srcdir)/git.mk'; \
} > $$x.tmp || failed=1; \
if test x$$failed = x; then \
mv $$x.tmp $$x || failed=1; \
fi; \
if test x$$failed = x; then : else \
echo "Failed updating $$x"; >&2 \
any_failed=1; \
fi; \
fi; done; test -z "$$any_failed"
git-mk-update:
wget $(GIT_MK_URL) -O $(top_srcdir)/git.mk
.PHONY: git-all git-mk-install git-mk-update
###############################################################################
# Actual .gitignore generation:
###############################################################################
$(srcdir)/.gitignore: Makefile.am $(top_srcdir)/git.mk
@echo "git.mk: Generating $@"
@{ \
if test "x$(DOC_MODULE)" = x -o "x$(DOC_MAIN_SGML_FILE)" = x; then :; else \
for x in \
$(DOC_MODULE)-decl-list.txt \
$(DOC_MODULE)-decl.txt \
tmpl/$(DOC_MODULE)-unused.sgml \
"tmpl/*.bak" \
$(REPORT_FILES) \
$(DOC_MODULE).pdf \
xml html \
; do echo "/$$x"; done; \
FLAVOR=$$(cd $(top_srcdir); $(AUTOCONF) --trace 'GTK_DOC_CHECK:$$2' ./configure.ac); \
case $$FLAVOR in *no-tmpl*) echo /tmpl;; esac; \
if echo "$(SCAN_OPTIONS)" | grep -q "\-\-rebuild-types"; then \
echo "/$(DOC_MODULE).types"; \
fi; \
if echo "$(SCAN_OPTIONS)" | grep -q "\-\-rebuild-sections"; then \
echo "/$(DOC_MODULE)-sections.txt"; \
fi; \
if test "$(abs_srcdir)" != "$(abs_builddir)" ; then \
for x in \
$(SETUP_FILES) \
$(DOC_MODULE).types \
; do echo "/$$x"; done; \
fi; \
fi; \
if test "x$(DOC_MODULE)$(DOC_ID)" = x -o "x$(DOC_LINGUAS)" = x; then :; else \
for lc in $(DOC_LINGUAS); do \
for x in \
$(if $(DOC_MODULE),$(DOC_MODULE).xml) \
$(DOC_PAGES) \
$(DOC_INCLUDES) \
; do echo "/$$lc/$$x"; done; \
done; \
for x in \
$(_DOC_OMF_ALL) \
$(_DOC_DSK_ALL) \
$(_DOC_HTML_ALL) \
$(_DOC_MOFILES) \
$(DOC_H_FILE) \
"*/.xml2po.mo" \
"*/*.omf.out" \
; do echo /$$x; done; \
fi; \
if test "x$(HELP_ID)" = x -o "x$(HELP_LINGUAS)" = x; then :; else \
for lc in $(HELP_LINGUAS); do \
for x in \
$(HELP_FILES) \
"$$lc.stamp" \
"$$lc.mo" \
; do echo "/$$lc/$$x"; done; \
done; \
fi; \
if test "x$(gsettings_SCHEMAS)" = x; then :; else \
for x in \
$(gsettings_SCHEMAS:.xml=.valid) \
$(gsettings__enum_file) \
; do echo "/$$x"; done; \
fi; \
if test "x$(appdata_XML)" = x; then :; else \
for x in \
$(appdata_XML:.xml=.valid) \
; do echo "/$$x"; done; \
fi; \
if test "x$(appstream_XML)" = x; then :; else \
for x in \
$(appstream_XML:.xml=.valid) \
; do echo "/$$x"; done; \
fi; \
if test -f $(srcdir)/po/Makefile.in.in; then \
for x in \
po/Makefile.in.in \
po/Makefile.in.in~ \
po/Makefile.in \
po/Makefile \
po/Makevars.template \
po/POTFILES \
po/Rules-quot \
po/stamp-it \
po/stamp-po \
po/.intltool-merge-cache \
"po/*.gmo" \
"po/*.header" \
"po/*.mo" \
"po/*.sed" \
"po/*.sin" \
po/$(GETTEXT_PACKAGE).pot \
intltool-extract.in \
intltool-merge.in \
intltool-update.in \
; do echo "/$$x"; done; \
fi; \
if test -f $(srcdir)/configure; then \
for x in \
autom4te.cache \
configure \
config.h \
stamp-h1 \
libtool \
config.lt \
; do echo "/$$x"; done; \
fi; \
if test "x$(DEJATOOL)" = x; then :; else \
for x in \
$(DEJATOOL) \
; do echo "/$$x.sum"; echo "/$$x.log"; done; \
echo /site.exp; \
fi; \
if test "x$(am__dirstamp)" = x; then :; else \
echo "$(am__dirstamp)"; \
fi; \
if test "x$(LTCOMPILE)" = x -a "x$(LTCXXCOMPILE)" = x -a "x$(GTKDOC_RUN)" = x; then :; else \
for x in \
"*.lo" \
".libs" "_libs" \
; do echo "$$x"; done; \
fi; \
for x in \
.gitignore \
$(GITIGNOREFILES) \
$(CLEANFILES) \
$(PROGRAMS) $(check_PROGRAMS) $(EXTRA_PROGRAMS) \
$(LIBRARIES) $(check_LIBRARIES) $(EXTRA_LIBRARIES) \
$(LTLIBRARIES) $(check_LTLIBRARIES) $(EXTRA_LTLIBRARIES) \
so_locations \
$(MOSTLYCLEANFILES) \
$(TEST_LOGS) \
$(TEST_LOGS:.log=.trs) \
$(TEST_SUITE_LOG) \
$(TESTS:=.test) \
"*.gcda" \
"*.gcno" \
$(DISTCLEANFILES) \
$(am__CONFIG_DISTCLEAN_FILES) \
$(CONFIG_CLEAN_FILES) \
TAGS ID GTAGS GRTAGS GSYMS GPATH tags \
"*.tab.c" \
$(MAINTAINERCLEANFILES) \
$(BUILT_SOURCES) \
$(patsubst %.vala,%.c,$(filter %.vala,$(SOURCES))) \
$(filter %_vala.stamp,$(DIST_COMMON)) \
$(filter %.vapi,$(DIST_COMMON)) \
$(filter $(addprefix %,$(notdir $(patsubst %.vapi,%.h,$(filter %.vapi,$(DIST_COMMON))))),$(DIST_COMMON)) \
Makefile \
Makefile.in \
"*.orig" \
"*.rej" \
"*.bak" \
"*~" \
".*.sw[nop]" \
".dirstamp" \
; do echo "/$$x"; done; \
for x in \
"*.$(OBJEXT)" \
$(DEPDIR) \
; do echo "$$x"; done; \
} | \
sed "s@^/`echo "$(srcdir)" | sed 's/\(.\)/[\1]/g'`/@/@" | \
sed 's@/[.]/@/@g' | \
LC_ALL=C sort | uniq > $@.tmp && \
mv $@.tmp $@;
all: $(srcdir)/.gitignore gitignore-recurse-maybe
gitignore: $(srcdir)/.gitignore gitignore-recurse
gitignore-recurse-maybe:
@for subdir in $(DIST_SUBDIRS); do \
case " $(SUBDIRS) " in \
*" $$subdir "*) :;; \
*) test "$$subdir" = . -o -e "$$subdir/.git" || (cd $$subdir && $(MAKE) $(AM_MAKEFLAGS) gitignore || echo "Skipping $$subdir");; \
esac; \
done
gitignore-recurse:
@for subdir in $(DIST_SUBDIRS); do \
test "$$subdir" = . -o -e "$$subdir/.git" || (cd $$subdir && $(MAKE) $(AM_MAKEFLAGS) gitignore || echo "Skipping $$subdir"); \
done
maintainer-clean: gitignore-clean
gitignore-clean:
-rm -f $(srcdir)/.gitignore
.PHONY: gitignore-clean gitignore gitignore-recurse gitignore-recurse-maybe

200
external/bubblewrap/network.c vendored
View file

@ -1,200 +0,0 @@
/* bubblewrap
* Copyright (C) 2016 Alexander Larsson
*
* This program 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 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, see <http://www.gnu.org/licenses/>.
*
*/
#include "config.h"
#include <arpa/inet.h>
#include <net/if.h>
#include <netinet/in.h>
#include <linux/loop.h>
#include <linux/netlink.h>
#include <linux/rtnetlink.h>
#include "utils.h"
#include "network.h"
static void *
add_rta (struct nlmsghdr *header,
int type,
size_t size)
{
struct rtattr *rta;
size_t rta_size = RTA_LENGTH (size);
rta = (struct rtattr *) ((char *) header + NLMSG_ALIGN (header->nlmsg_len));
rta->rta_type = type;
rta->rta_len = rta_size;
header->nlmsg_len = NLMSG_ALIGN (header->nlmsg_len) + rta_size;
return RTA_DATA (rta);
}
static int
rtnl_send_request (int rtnl_fd,
struct nlmsghdr *header)
{
struct sockaddr_nl dst_addr = { AF_NETLINK, 0 };
ssize_t sent;
sent = sendto (rtnl_fd, (void *) header, header->nlmsg_len, 0,
(struct sockaddr *) &dst_addr, sizeof (dst_addr));
if (sent < 0)
return -1;
return 0;
}
static int
rtnl_read_reply (int rtnl_fd,
int seq_nr)
{
char buffer[1024];
ssize_t received;
struct nlmsghdr *rheader;
while (1)
{
received = recv (rtnl_fd, buffer, sizeof (buffer), 0);
if (received < 0)
return -1;
rheader = (struct nlmsghdr *) buffer;
while (received >= NLMSG_HDRLEN)
{
if (rheader->nlmsg_seq != seq_nr)
return -1;
if (rheader->nlmsg_pid != getpid ())
return -1;
if (rheader->nlmsg_type == NLMSG_ERROR)
{
uint32_t *err = NLMSG_DATA (rheader);
if (*err == 0)
return 0;
return -1;
}
if (rheader->nlmsg_type == NLMSG_DONE)
return 0;
rheader = NLMSG_NEXT (rheader, received);
}
}
}
static int
rtnl_do_request (int rtnl_fd,
struct nlmsghdr *header)
{
if (rtnl_send_request (rtnl_fd, header) != 0)
return -1;
if (rtnl_read_reply (rtnl_fd, header->nlmsg_seq) != 0)
return -1;
return 0;
}
static struct nlmsghdr *
rtnl_setup_request (char *buffer,
int type,
int flags,
size_t size)
{
struct nlmsghdr *header;
size_t len = NLMSG_LENGTH (size);
static uint32_t counter = 0;
memset (buffer, 0, len);
header = (struct nlmsghdr *) buffer;
header->nlmsg_len = len;
header->nlmsg_type = type;
header->nlmsg_flags = flags | NLM_F_REQUEST;
header->nlmsg_seq = counter++;
header->nlmsg_pid = getpid ();
return (struct nlmsghdr *) header;
}
int
loopback_setup (void)
{
int r, if_loopback;
cleanup_fd int rtnl_fd = -1;
char buffer[1024];
struct sockaddr_nl src_addr = { AF_NETLINK, 0 };
struct nlmsghdr *header;
struct ifaddrmsg *addmsg;
struct ifinfomsg *infomsg;
struct in_addr *ip_addr;
src_addr.nl_pid = getpid ();
if_loopback = (int) if_nametoindex ("lo");
if (if_loopback <= 0)
return -1;
rtnl_fd = socket (PF_NETLINK, SOCK_RAW | SOCK_CLOEXEC, NETLINK_ROUTE);
if (rtnl_fd < 0)
return -1;
r = bind (rtnl_fd, (struct sockaddr *) &src_addr, sizeof (src_addr));
if (r < 0)
return -1;
header = rtnl_setup_request (buffer, RTM_NEWADDR,
NLM_F_CREATE | NLM_F_EXCL | NLM_F_ACK,
sizeof (struct ifaddrmsg));
addmsg = NLMSG_DATA (header);
addmsg->ifa_family = AF_INET;
addmsg->ifa_prefixlen = 8;
addmsg->ifa_flags = IFA_F_PERMANENT;
addmsg->ifa_scope = RT_SCOPE_HOST;
addmsg->ifa_index = if_loopback;
ip_addr = add_rta (header, IFA_LOCAL, sizeof (*ip_addr));
ip_addr->s_addr = htonl (INADDR_LOOPBACK);
ip_addr = add_rta (header, IFA_ADDRESS, sizeof (*ip_addr));
ip_addr->s_addr = htonl (INADDR_LOOPBACK);
assert (header->nlmsg_len < sizeof (buffer));
if (rtnl_do_request (rtnl_fd, header) != 0)
return -1;
header = rtnl_setup_request (buffer, RTM_NEWLINK,
NLM_F_ACK,
sizeof (struct ifinfomsg));
infomsg = NLMSG_DATA (header);
infomsg->ifi_family = AF_UNSPEC;
infomsg->ifi_type = 0;
infomsg->ifi_index = if_loopback;
infomsg->ifi_flags = IFF_UP;
infomsg->ifi_change = IFF_UP;
assert (header->nlmsg_len < sizeof (buffer));
if (rtnl_do_request (rtnl_fd, header) != 0)
return -1;
return 0;
}

21
external/bubblewrap/network.h vendored
View file

@ -1,21 +0,0 @@
/* bubblewrap
* Copyright (C) 2016 Alexander Larsson
*
* This program 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 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, see <http://www.gnu.org/licenses/>.
*
*/
#pragma once
int loopback_setup (void);

49
external/bubblewrap/packaging/bubblewrap.spec vendored
View file

@ -1,49 +0,0 @@
%global commit0 66d12bb23b04e201c5846e325f0b10930ed802f8
%global shortcommit0 %(c=%{commit0}; echo ${c:0:7})
Summary: Core execution tool for unprivileged containers
Name: bubblewrap
Version: 0
Release: 1%{?dist}
#VCS: git:https://github.com/projectatomic/bubblewrap
Source0: https://github.com/projectatomic/%{name}/archive/%{commit0}.tar.gz#/%{name}-%{shortcommit0}.tar.gz
License: LGPLv2+
URL: https://github.com/projectatomic/bubblewrap
BuildRequires: git
# We always run autogen.sh
BuildRequires: autoconf automake libtool
BuildRequires: libcap-devel
BuildRequires: pkgconfig(libselinux)
BuildRequires: libxslt
BuildRequires: docbook-style-xsl
%description
Bubblewrap (/usr/bin/bwrap) is a core execution engine for unprivileged
containers that works as a setuid binary on kernels without
user namespaces.
%prep
%autosetup -Sgit -n %{name}-%{version}
%build
env NOCONFIGURE=1 ./autogen.sh
%configure --disable-silent-rules --with-priv-mode=none
make %{?_smp_mflags}
%install
make install DESTDIR=$RPM_BUILD_ROOT INSTALL="install -p -c"
find $RPM_BUILD_ROOT -name '*.la' -delete
%files
%license COPYING
%doc README.md
%{_datadir}/bash-completion/completions/bwrap
%if (0%{?rhel} != 0 && 0%{?rhel} <= 7)
%attr(0755,root,root) %caps(cap_sys_admin,cap_net_admin,cap_sys_chroot=ep) %{_bindir}/bwrap
%else
%{_bindir}/bwrap
%endif
%{_mandir}/man1/*

35
external/bubblewrap/tests/test-basic.sh vendored
View file

@ -1,35 +0,0 @@
#!/bin/bash
set -xeuo pipefail
srcd=$(cd $(dirname $0) && pwd)
bn=$(basename $0)
tempdir=$(mktemp -d /var/tmp/tap-test.XXXXXX)
touch ${tempdir}/.testtmp
function cleanup () {
if test -n "${TEST_SKIP_CLEANUP:-}"; then
echo "Skipping cleanup of ${test_tmpdir}"
else if test -f ${tempdir}/.test; then
rm "${tempdir}" -rf
fi
fi
}
trap cleanup EXIT
cd ${tempdir}
assert_not_reached () {
echo $@ 1>&2; exit 1
}
assert_file_has_content () {
if ! grep -q -e "$2" "$1"; then
echo 1>&2 "File '$1' doesn't match regexp '$2'"; exit 1
fi
}
# At the moment we're testing in Travis' container infrastructure
# which also uses PR_SET_NO_NEW_PRIVS...but let's at least
# verify --help works!
bwrap --help >out.txt 2>&1
assert_file_has_content out.txt "--lock-file"

136
external/bubblewrap/uncrustify.cfg vendored
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@ -1,136 +0,0 @@
newlines lf
input_tab_size 8
output_tab_size 8
string_escape_char 92
string_escape_char2 0
# indenting
indent_columns 2
indent_with_tabs 0
indent_align_string True
indent_brace 2
indent_braces false
indent_braces_no_func True
indent_func_call_param false
indent_func_def_param false
indent_func_proto_param false
indent_switch_case 0
indent_case_brace 2
indent_paren_close 1
# spacing
sp_arith Add
sp_assign Add
sp_enum_assign Add
sp_bool Add
sp_compare Add
sp_inside_paren Remove
sp_inside_fparens Remove
sp_func_def_paren Force
sp_func_proto_paren Force
sp_paren_paren Remove
sp_balance_nested_parens False
sp_paren_brace Remove
sp_before_square Remove
sp_before_squares Remove
sp_inside_square Remove
sp_before_ptr_star Add
sp_between_ptr_star Remove
sp_after_comma Add
sp_before_comma Remove
sp_after_cast Add
sp_sizeof_paren Add
sp_not Remove
sp_inv Remove
sp_addr Remove
sp_member Remove
sp_deref Remove
sp_sign Remove
sp_incdec Remove
sp_attribute_paren remove
sp_macro Force
sp_func_call_paren Force
sp_func_call_user_paren Remove
set func_call_user _ N_ C_ g_autoptr g_auto
sp_brace_typedef add
sp_cond_colon add
sp_cond_question add
sp_defined_paren remove
# alignment
align_keep_tabs False
align_with_tabs False
align_on_tabstop False
align_number_left True
align_func_params True
align_var_def_span 0
align_var_def_amp_style 1
align_var_def_colon true
align_enum_equ_span 0
align_var_struct_span 2
align_var_def_star_style 2
align_var_def_amp_style 2
align_typedef_span 2
align_typedef_func 0
align_typedef_star_style 2
align_typedef_amp_style 2
# newlines
nl_assign_leave_one_liners True
nl_enum_leave_one_liners False
nl_func_leave_one_liners False
nl_if_leave_one_liners False
nl_end_of_file Add
nl_assign_brace Remove
nl_func_var_def_blk 1
nl_fcall_brace Add
nl_enum_brace Remove
nl_struct_brace Force
nl_union_brace Force
nl_if_brace Force
nl_brace_else Force
nl_elseif_brace Force
nl_else_brace Add
nl_for_brace Force
nl_while_brace Force
nl_do_brace Force
nl_brace_while Force
nl_switch_brace Force
nl_before_case True
nl_after_case False
nl_func_type_name Force
nl_func_proto_type_name Remove
nl_func_paren Remove
nl_func_decl_start Remove
nl_func_decl_args Force
nl_func_decl_end Remove
nl_fdef_brace Force
nl_after_return False
nl_define_macro False
nl_create_if_one_liner False
nl_create_for_one_liner False
nl_create_while_one_liner False
nl_after_semicolon True
nl_multi_line_cond true
# mod
# I'd like these to be remove, but that removes brackets in if { if { foo } }, which i dislike
# Not clear what to do about that...
mod_full_brace_for Remove
mod_full_brace_if Remove
mod_full_brace_if_chain True
mod_full_brace_while Remove
mod_full_brace_do Remove
mod_full_brace_nl 3
mod_paren_on_return Remove
# line splitting
#code_width = 78
ls_for_split_full True
ls_func_split_full True
# positioning
pos_bool Trail
pos_conditional Trail

2
external/bubblewrap/uncrustify.sh vendored
View file

@ -1,2 +0,0 @@
#!/bin/sh
uncrustify -c uncrustify.cfg --no-backup `git ls-tree --name-only -r HEAD | grep \\\.[ch]$`

676
external/bubblewrap/utils.c vendored
View file

@ -1,676 +0,0 @@
/* bubblewrap
* Copyright (C) 2016 Alexander Larsson
*
* This program 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 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, see <http://www.gnu.org/licenses/>.
*
*/
#include "config.h"
#include "utils.h"
#include <sys/syscall.h>
#ifdef HAVE_SELINUX
#include <selinux/selinux.h>
#endif
void
die_with_error (const char *format, ...)
{
va_list args;
int errsv;
errsv = errno;
va_start (args, format);
vfprintf (stderr, format, args);
va_end (args);
fprintf (stderr, ": %s\n", strerror (errsv));
exit (1);
}
void
die (const char *format, ...)
{
va_list args;
va_start (args, format);
vfprintf (stderr, format, args);
va_end (args);
fprintf (stderr, "\n");
exit (1);
}
void
die_unless_label_valid (const char *label)
{
#ifdef HAVE_SELINUX
if (is_selinux_enabled () == 1)
{
if (security_check_context ((security_context_t) label) < 0)
die_with_error ("invalid label %s", label);
return;
}
#endif
die ("labeling not supported on this system");
}
void
die_oom (void)
{
puts ("Out of memory");
exit (1);
}
void *
xmalloc (size_t size)
{
void *res = malloc (size);
if (res == NULL)
die_oom ();
return res;
}
void *
xcalloc (size_t size)
{
void *res = calloc (1, size);
if (res == NULL)
die_oom ();
return res;
}
void *
xrealloc (void *ptr, size_t size)
{
void *res = realloc (ptr, size);
if (size != 0 && res == NULL)
die_oom ();
return res;
}
char *
xstrdup (const char *str)
{
char *res;
assert (str != NULL);
res = strdup (str);
if (res == NULL)
die_oom ();
return res;
}
void
strfreev (char **str_array)
{
if (str_array)
{
int i;
for (i = 0; str_array[i] != NULL; i++)
free (str_array[i]);
free (str_array);
}
}
/* Compares if str has a specific path prefix. This differs
from a regular prefix in two ways. First of all there may
be multiple slashes separating the path elements, and
secondly, if a prefix is matched that has to be en entire
path element. For instance /a/prefix matches /a/prefix/foo/bar,
but not /a/prefixfoo/bar. */
bool
has_path_prefix (const char *str,
const char *prefix)
{
while (TRUE)
{
/* Skip consecutive slashes to reach next path
element */
while (*str == '/')
str++;
while (*prefix == '/')
prefix++;
/* No more prefix path elements? Done! */
if (*prefix == 0)
return TRUE;
/* Compare path element */
while (*prefix != 0 && *prefix != '/')
{
if (*str != *prefix)
return FALSE;
str++;
prefix++;
}
/* Matched prefix path element,
must be entire str path element */
if (*str != '/' && *str != 0)
return FALSE;
}
}
bool
has_prefix (const char *str,
const char *prefix)
{
return strncmp (str, prefix, strlen (prefix)) == 0;
}
void
xsetenv (const char *name, const char *value, int overwrite)
{
if (setenv (name, value, overwrite))
die ("setenv failed");
}
void
xunsetenv (const char *name)
{
if (unsetenv (name))
die ("unsetenv failed");
}
char *
strconcat (const char *s1,
const char *s2)
{
size_t len = 0;
char *res;
if (s1)
len += strlen (s1);
if (s2)
len += strlen (s2);
res = xmalloc (len + 1);
*res = 0;
if (s1)
strcat (res, s1);
if (s2)
strcat (res, s2);
return res;
}
char *
strconcat3 (const char *s1,
const char *s2,
const char *s3)
{
size_t len = 0;
char *res;
if (s1)
len += strlen (s1);
if (s2)
len += strlen (s2);
if (s3)
len += strlen (s3);
res = xmalloc (len + 1);
*res = 0;
if (s1)
strcat (res, s1);
if (s2)
strcat (res, s2);
if (s3)
strcat (res, s3);
return res;
}
char *
xasprintf (const char *format,
...)
{
char *buffer = NULL;
va_list args;
va_start (args, format);
if (vasprintf (&buffer, format, args) == -1)
die_oom ();
va_end (args);
return buffer;
}
int
fdwalk (int proc_fd, int (*cb)(void *data,
int fd), void *data)
{
int open_max;
int fd;
int dfd;
int res = 0;
DIR *d;
dfd = openat (proc_fd, "self/fd", O_DIRECTORY | O_RDONLY | O_NONBLOCK | O_CLOEXEC | O_NOCTTY);
if (dfd == -1)
return res;
if ((d = fdopendir (dfd)))
{
struct dirent *de;
while ((de = readdir (d)))
{
long l;
char *e = NULL;
if (de->d_name[0] == '.')
continue;
errno = 0;
l = strtol (de->d_name, &e, 10);
if (errno != 0 || !e || *e)
continue;
fd = (int) l;
if ((long) fd != l)
continue;
if (fd == dirfd (d))
continue;
if ((res = cb (data, fd)) != 0)
break;
}
closedir (d);
return res;
}
open_max = sysconf (_SC_OPEN_MAX);
for (fd = 0; fd < open_max; fd++)
if ((res = cb (data, fd)) != 0)
break;
return res;
}
/* Sets errno on error (!= 0), ENOSPC on short write */
int
write_to_fd (int fd,
const char *content,
ssize_t len)
{
ssize_t res;
while (len > 0)
{
res = write (fd, content, len);
if (res < 0 && errno == EINTR)
continue;
if (res <= 0)
{
if (res == 0) /* Unexpected short write, should not happen when writing to a file */
errno = ENOSPC;
return -1;
}
len -= res;
content += res;
}
return 0;
}
/* Sets errno on error (!= 0), ENOSPC on short write */
int
write_file_at (int dirfd,
const char *path,
const char *content)
{
int fd;
bool res;
int errsv;
fd = openat (dirfd, path, O_RDWR | O_CLOEXEC, 0);
if (fd == -1)
return -1;
res = 0;
if (content)
res = write_to_fd (fd, content, strlen (content));
errsv = errno;
close (fd);
errno = errsv;
return res;
}
/* Sets errno on error (!= 0), ENOSPC on short write */
int
create_file (const char *path,
mode_t mode,
const char *content)
{
int fd;
int res;
int errsv;
fd = creat (path, mode);
if (fd == -1)
return -1;
res = 0;
if (content)
res = write_to_fd (fd, content, strlen (content));
errsv = errno;
close (fd);
errno = errsv;
return res;
}
int
ensure_file (const char *path,
mode_t mode)
{
struct stat buf;
/* We check this ahead of time, otherwise
the create file will fail in the read-only
case with EROFD instead of EEXIST */
if (stat (path, &buf) == 0 &&
S_ISREG (buf.st_mode))
return 0;
if (create_file (path, mode, NULL) != 0 && errno != EEXIST)
return -1;
return 0;
}
#define BUFSIZE 8192
/* Sets errno on error (!= 0), ENOSPC on short write */
int
copy_file_data (int sfd,
int dfd)
{
char buffer[BUFSIZE];
ssize_t bytes_read;
while (TRUE)
{
bytes_read = read (sfd, buffer, BUFSIZE);
if (bytes_read == -1)
{
if (errno == EINTR)
continue;
return -1;
}
if (bytes_read == 0)
break;
if (write_to_fd (dfd, buffer, bytes_read) != 0)
return -1;
}
return 0;
}
/* Sets errno on error (!= 0), ENOSPC on short write */
int
copy_file (const char *src_path,
const char *dst_path,
mode_t mode)
{
int sfd;
int dfd;
int res;
int errsv;
sfd = open (src_path, O_CLOEXEC | O_RDONLY);
if (sfd == -1)
return -1;
dfd = creat (dst_path, mode);
if (dfd == -1)
{
errsv = errno;
close (sfd);
errno = errsv;
return -1;
}
res = copy_file_data (sfd, dfd);
errsv = errno;
close (sfd);
close (dfd);
errno = errsv;
return res;
}
/* Sets errno on error (== NULL),
* Always ensures terminating zero */
char *
load_file_data (int fd,
size_t *size)
{
cleanup_free char *data = NULL;
ssize_t data_read;
ssize_t data_len;
ssize_t res;
int errsv;
data_read = 0;
data_len = 4080;
data = xmalloc (data_len);
do
{
if (data_len == data_read + 1)
{
data_len *= 2;
data = xrealloc (data, data_len);
}
do
res = read (fd, data + data_read, data_len - data_read - 1);
while (res < 0 && errno == EINTR);
if (res < 0)
{
errsv = errno;
close (fd);
errno = errsv;
return NULL;
}
data_read += res;
}
while (res > 0);
data[data_read] = 0;
if (size)
*size = (size_t) data_read;
return steal_pointer (&data);
}
/* Sets errno on error (== NULL),
* Always ensures terminating zero */
char *
load_file_at (int dirfd,
const char *path)
{
int fd;
char *data;
int errsv;
fd = openat (dirfd, path, O_CLOEXEC | O_RDONLY);
if (fd == -1)
return NULL;
data = load_file_data (fd, NULL);
errsv = errno;
close (fd);
errno = errsv;
return data;
}
/* Sets errno on error (< 0) */
int
get_file_mode (const char *pathname)
{
struct stat buf;
if (stat (pathname, &buf) != 0)
return -1;
return buf.st_mode & S_IFMT;
}
/* Sets errno on error (!= 0) */
int
mkdir_with_parents (const char *pathname,
int mode,
bool create_last)
{
cleanup_free char *fn = NULL;
char *p;
struct stat buf;
if (pathname == NULL || *pathname == '\0')
{
errno = EINVAL;
return -1;
}
fn = xstrdup (pathname);
p = fn;
while (*p == '/')
p++;
do
{
while (*p && *p != '/')
p++;
if (!*p)
p = NULL;
else
*p = '\0';
if (!create_last && p == NULL)
break;
if (stat (fn, &buf) != 0)
{
if (mkdir (fn, mode) == -1 && errno != EEXIST)
return -1;
}
else if (!S_ISDIR (buf.st_mode))
{
errno = ENOTDIR;
return -1;
}
if (p)
{
*p++ = '/';
while (*p && *p == '/')
p++;
}
}
while (p);
return 0;
}
int
raw_clone (unsigned long flags,
void *child_stack)
{
#if defined(__s390__) || defined(__CRIS__)
/* On s390 and cris the order of the first and second arguments
* of the raw clone() system call is reversed. */
return (int) syscall (__NR_clone, child_stack, flags);
#else
return (int) syscall (__NR_clone, flags, child_stack);
#endif
}
int
pivot_root (const char * new_root, const char * put_old)
{
#ifdef __NR_pivot_root
return syscall (__NR_pivot_root, new_root, put_old);
#else
errno = ENOSYS;
return -1;
#endif
}
char *
label_mount (const char *opt, const char *mount_label)
{
#ifdef HAVE_SELINUX
if (mount_label)
{
if (opt)
return xasprintf ("%s,context=\"%s\"", opt, mount_label);
else
return xasprintf ("context=\"%s\"", mount_label);
}
#endif
if (opt)
return xstrdup (opt);
return NULL;
}
int
label_create_file (const char *file_label)
{
#ifdef HAVE_SELINUX
if (is_selinux_enabled () > 0 && file_label)
return setfscreatecon ((security_context_t) file_label);
#endif
return 0;
}
int
label_exec (const char *exec_label)
{
#ifdef HAVE_SELINUX
if (is_selinux_enabled () > 0 && exec_label)
return setexeccon ((security_context_t) exec_label);
#endif
return 0;
}

164
external/bubblewrap/utils.h vendored
View file

@ -1,164 +0,0 @@
/* bubblewrap
* Copyright (C) 2016 Alexander Larsson
*
* This program 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 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, see <http://www.gnu.org/licenses/>.
*
*/
#pragma once
#include <assert.h>
#include <dirent.h>
#include <errno.h>
#include <fcntl.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#if 1
#define __debug__(x) printf x
#else
#define __debug__(x)
#endif
#define UNUSED __attribute__((__unused__))
#define N_ELEMENTS(arr) (sizeof (arr) / sizeof ((arr)[0]))
#define TRUE 1
#define FALSE 0
typedef int bool;
#define PIPE_READ_END 0
#define PIPE_WRITE_END 1
void die_with_error (const char *format,
...) __attribute__((__noreturn__)) __attribute__((format (printf, 1, 2)));
void die (const char *format,
...) __attribute__((__noreturn__));
void die_oom (void) __attribute__((__noreturn__));
void die_unless_label_valid (const char *label);
void *xmalloc (size_t size);
void *xcalloc (size_t size);
void *xrealloc (void *ptr,
size_t size);
char *xstrdup (const char *str);
void strfreev (char **str_array);
void xsetenv (const char *name,
const char *value,
int overwrite);
void xunsetenv (const char *name);
char *strconcat (const char *s1,
const char *s2);
char *strconcat3 (const char *s1,
const char *s2,
const char *s3);
char * xasprintf (const char *format,
...) __attribute__((format (printf, 1, 2)));
bool has_prefix (const char *str,
const char *prefix);
bool has_path_prefix (const char *str,
const char *prefix);
int fdwalk (int proc_fd,
int (*cb)(void *data,
int fd),
void *data);
char *load_file_data (int fd,
size_t *size);
char *load_file_at (int dirfd,
const char *path);
int write_file_at (int dirfd,
const char *path,
const char *content);
int write_to_fd (int fd,
const char *content,
ssize_t len);
int copy_file_data (int sfd,
int dfd);
int copy_file (const char *src_path,
const char *dst_path,
mode_t mode);
int create_file (const char *path,
mode_t mode,
const char *content);
int ensure_file (const char *path,
mode_t mode);
int get_file_mode (const char *pathname);
int mkdir_with_parents (const char *pathname,
int mode,
bool create_last);
/* syscall wrappers */
int raw_clone (unsigned long flags,
void *child_stack);
int pivot_root (const char *new_root,
const char *put_old);
char *label_mount (const char *opt,
const char *mount_label);
int label_exec (const char *exec_label);
int label_create_file (const char *file_label);
static inline void
cleanup_freep (void *p)
{
void **pp = (void **) p;
if (*pp)
free (*pp);
}
static inline void
cleanup_strvp (void *p)
{
void **pp = (void **) p;
strfreev (*pp);
}
static inline void
cleanup_fdp (int *fdp)
{
int fd;
assert (fdp);
fd = *fdp;
if (fd != -1)
(void) close (fd);
}
#define cleanup_free __attribute__((cleanup (cleanup_freep)))
#define cleanup_fd __attribute__((cleanup (cleanup_fdp)))
#define cleanup_strv __attribute__((cleanup (cleanup_strvp)))
static inline void *
steal_pointer (void *pp)
{
void **ptr = (void **) pp;
void *ref;
ref = *ptr;
*ptr = NULL;
return ref;
}
/* type safety */
#define steal_pointer(pp) \
(0 ? (*(pp)) : (steal_pointer) (pp))

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/*
* Copyright (C) 2007 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/*
* JNI helper functions.
*
* This file may be included by C or C++ code, which is trouble because jni.h
* uses different typedefs for JNIEnv in each language.
*
* TODO: remove C support.
*/
#ifndef NATIVEHELPER_JNIHELP_H_
#define NATIVEHELPER_JNIHELP_H_
#include "jni.h"
#include <errno.h>
#include <unistd.h>
#ifndef NELEM
# define NELEM(x) ((int) (sizeof(x) / sizeof((x)[0])))
#endif
#ifdef __cplusplus
extern "C" {
#endif
/*
* Register one or more native methods with a particular class.
* "className" looks like "java/lang/String". Aborts on failure.
* TODO: fix all callers and change the return type to void.
*/
int jniRegisterNativeMethods(C_JNIEnv* env, const char* className, const JNINativeMethod* gMethods, int numMethods);
/*
* Throw an exception with the specified class and an optional message.
*
* The "className" argument will be passed directly to FindClass, which
* takes strings with slashes (e.g. "java/lang/Object").
*
* If an exception is currently pending, we log a warning message and
* clear it.
*
* Returns 0 on success, nonzero if something failed (e.g. the exception
* class couldn't be found, so *an* exception will still be pending).
*
* Currently aborts the VM if it can't throw the exception.
*/
int jniThrowException(C_JNIEnv* env, const char* className, const char* msg);
/*
* Throw a java.lang.NullPointerException, with an optional message.
*/
int jniThrowNullPointerException(C_JNIEnv* env, const char* msg);
/*
* Throw a java.lang.RuntimeException, with an optional message.
*/
int jniThrowRuntimeException(C_JNIEnv* env, const char* msg);
/*
* Throw a java.io.IOException, generating the message from errno.
*/
int jniThrowIOException(C_JNIEnv* env, int errnum);
/*
* Return a pointer to a locale-dependent error string explaining errno
* value 'errnum'. The returned pointer may or may not be equal to 'buf'.
* This function is thread-safe (unlike strerror) and portable (unlike
* strerror_r).
*/
const char* jniStrError(int errnum, char* buf, size_t buflen);
/*
* Returns a new java.io.FileDescriptor for the given int fd.
*/
jobject jniCreateFileDescriptor(C_JNIEnv* env, int fd);
/*
* Returns the int fd from a java.io.FileDescriptor.
*/
int jniGetFDFromFileDescriptor(C_JNIEnv* env, jobject fileDescriptor);
/*
* Sets the int fd in a java.io.FileDescriptor.
*/
void jniSetFileDescriptorOfFD(C_JNIEnv* env, jobject fileDescriptor, int value);
/*
* Returns the reference from a java.lang.ref.Reference.
*/
jobject jniGetReferent(C_JNIEnv* env, jobject ref);
/*
* Log a message and an exception.
* If exception is NULL, logs the current exception in the JNI environment.
*/
void jniLogException(C_JNIEnv* env, int priority, const char* tag, jthrowable exception);
#ifdef __cplusplus
}
#endif
/*
* For C++ code, we provide inlines that map to the C functions. g++ always
* inlines these, even on non-optimized builds.
*/
#if defined(__cplusplus)
inline int jniRegisterNativeMethods(JNIEnv* env, const char* className, const JNINativeMethod* gMethods, int numMethods) {
return jniRegisterNativeMethods(&env->functions, className, gMethods, numMethods);
}
inline int jniThrowException(JNIEnv* env, const char* className, const char* msg) {
return jniThrowException(&env->functions, className, msg);
}
extern "C" int jniThrowExceptionFmt(C_JNIEnv* env, const char* className, const char* fmt, va_list args);
/*
* Equivalent to jniThrowException but with a printf-like format string and
* variable-length argument list. This is only available in C++.
*/
inline int jniThrowExceptionFmt(JNIEnv* env, const char* className, const char* fmt, ...) {
va_list args;
va_start(args, fmt);
return jniThrowExceptionFmt(&env->functions, className, fmt, args);
va_end(args);
}
inline int jniThrowNullPointerException(JNIEnv* env, const char* msg) {
return jniThrowNullPointerException(&env->functions, msg);
}
inline int jniThrowRuntimeException(JNIEnv* env, const char* msg) {
return jniThrowRuntimeException(&env->functions, msg);
}
inline int jniThrowIOException(JNIEnv* env, int errnum) {
return jniThrowIOException(&env->functions, errnum);
}
inline jobject jniCreateFileDescriptor(JNIEnv* env, int fd) {
return jniCreateFileDescriptor(&env->functions, fd);
}
inline int jniGetFDFromFileDescriptor(JNIEnv* env, jobject fileDescriptor) {
return jniGetFDFromFileDescriptor(&env->functions, fileDescriptor);
}
inline void jniSetFileDescriptorOfFD(JNIEnv* env, jobject fileDescriptor, int value) {
jniSetFileDescriptorOfFD(&env->functions, fileDescriptor, value);
}
inline jobject jniGetReferent(JNIEnv* env, jobject ref) {
return jniGetReferent(&env->functions, ref);
}
inline void jniLogException(JNIEnv* env, int priority, const char* tag, jthrowable exception = NULL) {
jniLogException(&env->functions, priority, tag, exception);
}
#if !defined(DISALLOW_COPY_AND_ASSIGN)
// DISALLOW_COPY_AND_ASSIGN disallows the copy and operator= functions. It goes in the private:
// declarations in a class.
#if __cplusplus >= 201103L
#define DISALLOW_COPY_AND_ASSIGN(TypeName) \
TypeName(const TypeName&) = delete; \
void operator=(const TypeName&) = delete
#else
#define DISALLOW_COPY_AND_ASSIGN(TypeName) \
TypeName(const TypeName&); \
void operator=(const TypeName&)
#endif // __has_feature(cxx_deleted_functions)
#endif // !defined(DISALLOW_COPY_AND_ASSIGN)
#endif
/*
* TEMP_FAILURE_RETRY is defined by some, but not all, versions of
* <unistd.h>. (Alas, it is not as standard as we'd hoped!) So, if it's
* not already defined, then define it here.
*/
#ifndef TEMP_FAILURE_RETRY
/* Used to retry syscalls that can return EINTR. */
#define TEMP_FAILURE_RETRY(exp) ({ \
typeof (exp) _rc; \
do { \
_rc = (exp); \
} while (_rc == -1 && errno == EINTR); \
_rc; })
#endif
#endif /* NATIVEHELPER_JNIHELP_H_ */

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Taken from https://android.googlesource.com/platform/libnativehelper/

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