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Ludovico de Nittis authored
Add support for Vulkan layers in pressure-vessel See merge request !168
Ludovico de Nittis authoredAdd support for Vulkan layers in pressure-vessel See merge request !168
runtime.c 137.99 KiB
/*
* Copyright © 2020 Collabora Ltd.
*
* SPDX-License-Identifier: LGPL-2.1-or-later
*
* 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 2.1 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, see <http://www.gnu.org/licenses/>.
*/
#include "runtime.h"
#include <sysexits.h>
#include <gio/gio.h>
/* Include these before steam-runtime-tools.h so that their backport of
* G_DEFINE_AUTOPTR_CLEANUP_FUNC will be visible to it */
#include "steam-runtime-tools/glib-backports-internal.h"
#include "libglnx/libglnx.h"
#include <steam-runtime-tools/steam-runtime-tools.h>
#include "steam-runtime-tools/resolve-in-sysroot-internal.h"
#include "steam-runtime-tools/utils-internal.h"
#include "bwrap.h"
#include "bwrap-lock.h"
#include "elf-utils.h"
#include "enumtypes.h"
#include "flatpak-run-private.h"
#include "tree-copy.h"
#include "utils.h"
/*
* PvRuntime:
*
* Object representing a runtime to be used as the /usr for a game.
*/
struct _PvRuntime
{
GObject parent;
gchar *bubblewrap;
gchar *source_files;
gchar *tools_dir;
PvBwrapLock *runtime_lock;
GStrv original_environ;
gchar *libcapsule_knowledge;
gchar *mutable_parent;
gchar *mutable_sysroot;
gchar *tmpdir;
gchar *overrides;
const gchar *overrides_in_container;
gchar *container_access;
FlatpakBwrap *container_access_adverb;
const gchar *runtime_files; /* either source_files or mutable_sysroot */
gchar *runtime_usr; /* either runtime_files or that + "/usr" */
gchar *runtime_files_on_host;
const gchar *adverb_in_container;
gchar *provider_in_current_namespace;
gchar *provider_in_host_namespace;
gchar *provider_in_container_namespace;
const gchar *host_in_current_namespace;
PvRuntimeFlags flags;
int mutable_parent_fd;
int mutable_sysroot_fd;
gboolean any_libc_from_provider;
gboolean all_libc_from_provider;
gboolean runtime_is_just_usr;
gboolean is_steamrt;
gboolean is_scout;
};
struct _PvRuntimeClass
{
GObjectClass parent;
};
enum {
PROP_0,
PROP_BUBBLEWRAP,
PROP_ORIGINAL_ENVIRON,
PROP_FLAGS,
PROP_MUTABLE_PARENT,
PROP_PROVIDER_IN_CURRENT_NAMESPACE,
PROP_PROVIDER_IN_CONTAINER_NAMESPACE,
PROP_SOURCE_FILES,
PROP_TOOLS_DIRECTORY,
N_PROPERTIES
};
static GParamSpec *properties[N_PROPERTIES] = { NULL };
static void pv_runtime_initable_iface_init (GInitableIface *iface,
gpointer unused);
G_DEFINE_TYPE_WITH_CODE (PvRuntime, pv_runtime, G_TYPE_OBJECT,
G_IMPLEMENT_INTERFACE (G_TYPE_INITABLE,
pv_runtime_initable_iface_init))
/*
* Return whether @path is likely to be visible in the provider mount point
* (e.g. /run/host).
* This needs to be kept approximately in sync with pv_bwrap_bind_usr()
* and Flatpak's --filesystem=host-os special keyword.
*
* This doesn't currently handle /etc: we make the pessimistic assumption
* that /etc/ld.so.cache, etc., are not shared.
*/
static gboolean
path_visible_in_provider_namespace (const char *path)
{
while (path[0] == '/')
path++;
if (g_str_has_prefix (path, "usr") &&
(path[3] == '\0' || path[3] == '/'))
return TRUE;
if (g_str_has_prefix (path, "lib"))
return TRUE;
if (g_str_has_prefix (path, "bin") &&
(path[3] == '\0' || path[3] == '/'))
return TRUE;
if (g_str_has_prefix (path, "sbin") ||
(path[4] == '\0' || path[4] == '/'))
return TRUE;
return FALSE;
}
/*
* Supported Debian-style multiarch tuples
*/
static const char * const multiarch_tuples[] =
{
"x86_64-linux-gnu",
"i386-linux-gnu",
NULL
};
typedef struct
{
const char *tuple;
/* Directories other than /usr/lib that we must search for loadable
* modules, most-ambiguous first, least-ambiguous last, not including
* Debian-style multiarch directories which are automatically derived
* from @tuple.
* - Red-Hat- or Arch-style lib<QUAL>
* - Exherbo <GNU-tuple>/lib
* - etc.
* Size is completely arbitrary, expand as needed */
const char *multilib[3];
} MultiarchDetails;
/*
* More details, in the same order as multiarch_tuples
*/
static const MultiarchDetails multiarch_details[] =
{
{
.tuple = "x86_64-linux-gnu",
.multilib = { "lib64", "x86_64-pc-linux-gnu/lib", NULL },
},
{
.tuple = "i386-linux-gnu",
.multilib = { "lib32", "i686-pc-linux-gnu/lib", NULL }
},
};
G_STATIC_ASSERT (G_N_ELEMENTS (multiarch_details)
== G_N_ELEMENTS (multiarch_tuples) - 1);
typedef struct
{
gsize multiarch_index;
const MultiarchDetails *details;
gchar *capsule_capture_libs_basename;
gchar *capsule_capture_libs;
gchar *libdir_in_current_namespace;
gchar *libdir_in_container;
gchar *ld_so;
} RuntimeArchitecture;
static gboolean
runtime_architecture_init (RuntimeArchitecture *self,
PvRuntime *runtime)
{
const gchar *argv[] = { NULL, "--print-ld.so", NULL };
g_return_val_if_fail (self->multiarch_index < G_N_ELEMENTS (multiarch_details),
FALSE);
g_return_val_if_fail (self->multiarch_index < G_N_ELEMENTS (multiarch_tuples) - 1,
FALSE);
g_return_val_if_fail (self->details == NULL, FALSE);
self->details = &multiarch_details[self->multiarch_index];
g_return_val_if_fail (self->details != NULL, FALSE);
g_return_val_if_fail (self->details->tuple != NULL, FALSE);
g_return_val_if_fail (g_strcmp0 (multiarch_tuples[self->multiarch_index],
self->details->tuple) == 0, FALSE);
self->capsule_capture_libs_basename = g_strdup_printf ("%s-capsule-capture-libs",
self->details->tuple);
self->capsule_capture_libs = g_build_filename (runtime->tools_dir,
self->capsule_capture_libs_basename,
NULL);
self->libdir_in_current_namespace = g_build_filename (runtime->overrides, "lib",
self->details->tuple, NULL);
self->libdir_in_container = g_build_filename (runtime->overrides_in_container,
"lib", self->details->tuple, NULL);
/* This has the side-effect of testing whether we can run binaries
* for this architecture on the current environment. We
* assume that this is the same as whether we can run them
* on the host, if different. */
argv[0] = self->capsule_capture_libs;
self->ld_so = pv_capture_output (argv, NULL);
if (self->ld_so == NULL)
{
g_debug ("Cannot determine ld.so for %s", self->details->tuple);
return FALSE;
}
return TRUE;
}
static gboolean
runtime_architecture_check_valid (RuntimeArchitecture *self)
{
g_return_val_if_fail (self->multiarch_index < G_N_ELEMENTS (multiarch_details), FALSE);
g_return_val_if_fail (self->details == &multiarch_details[self->multiarch_index], FALSE);
g_return_val_if_fail (self->capsule_capture_libs_basename != NULL, FALSE);
g_return_val_if_fail (self->capsule_capture_libs != NULL, FALSE);
g_return_val_if_fail (self->libdir_in_current_namespace != NULL, FALSE);
g_return_val_if_fail (self->libdir_in_container != NULL, FALSE);
g_return_val_if_fail (self->ld_so != NULL, FALSE);
return TRUE;
}
static void
runtime_architecture_clear (RuntimeArchitecture *self)
{
self->multiarch_index = G_MAXSIZE;
self->details = NULL;
g_clear_pointer (&self->capsule_capture_libs_basename, g_free);
g_clear_pointer (&self->capsule_capture_libs, g_free);
g_clear_pointer (&self->libdir_in_current_namespace, g_free);
g_clear_pointer (&self->libdir_in_container, g_free);
g_clear_pointer (&self->ld_so, g_free);
}
G_DEFINE_AUTO_CLEANUP_CLEAR_FUNC (RuntimeArchitecture,
runtime_architecture_clear)
static gboolean pv_runtime_use_provider_graphics_stack (PvRuntime *self,
FlatpakBwrap *bwrap,
GHashTable *extra_locked_vars_to_unset,
GHashTable *extra_locked_vars_to_inherit,
GError **error);
static void pv_runtime_set_search_paths (PvRuntime *self,
FlatpakBwrap *bwrap);
static void
pv_runtime_init (PvRuntime *self)
{
self->any_libc_from_provider = FALSE;
self->all_libc_from_provider = FALSE;
self->mutable_parent_fd = -1;
self->mutable_sysroot_fd = -1;
}
static void
pv_runtime_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
PvRuntime *self = PV_RUNTIME (object);
switch (prop_id)
{
case PROP_BUBBLEWRAP:
g_value_set_string (value, self->bubblewrap);
break;
case PROP_ORIGINAL_ENVIRON:
g_value_set_boxed (value, self->original_environ);
break;
case PROP_FLAGS:
g_value_set_flags (value, self->flags);
break;
case PROP_MUTABLE_PARENT:
g_value_set_string (value, self->mutable_parent);
break;
case PROP_PROVIDER_IN_CURRENT_NAMESPACE:
g_value_set_string (value, self->provider_in_current_namespace);
break;
case PROP_PROVIDER_IN_CONTAINER_NAMESPACE:
g_value_set_string (value, self->provider_in_container_namespace);
break;
case PROP_SOURCE_FILES:
g_value_set_string (value, self->source_files);
break;
case PROP_TOOLS_DIRECTORY:
g_value_set_string (value, self->tools_dir);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
}
}
static void
pv_runtime_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
PvRuntime *self = PV_RUNTIME (object);
const char *path;
switch (prop_id)
{
case PROP_BUBBLEWRAP:
/* Construct-only */
g_return_if_fail (self->bubblewrap == NULL);
self->bubblewrap = g_value_dup_string (value);
break;
case PROP_ORIGINAL_ENVIRON:
/* Construct-only */
g_return_if_fail (self->original_environ == NULL);
self->original_environ = g_value_dup_boxed (value);
break;
case PROP_FLAGS:
self->flags = g_value_get_flags (value);
break;
case PROP_MUTABLE_PARENT:
/* Construct-only */
g_return_if_fail (self->mutable_parent == NULL);
path = g_value_get_string (value);
if (path != NULL)
{
self->mutable_parent = realpath (path, NULL);
if (self->mutable_parent == NULL)
{
/* It doesn't exist. Keep the non-canonical path so we
* can warn about it later */
self->mutable_parent = g_strdup (path);
}
}
break;
case PROP_PROVIDER_IN_CURRENT_NAMESPACE:
/* Construct-only */
g_return_if_fail (self->provider_in_current_namespace == NULL);
self->provider_in_current_namespace = g_value_dup_string (value);
break;
case PROP_PROVIDER_IN_CONTAINER_NAMESPACE:
/* Construct-only */
g_return_if_fail (self->provider_in_container_namespace == NULL);
self->provider_in_container_namespace = g_value_dup_string (value);
break;
case PROP_SOURCE_FILES:
/* Construct-only */
g_return_if_fail (self->source_files == NULL);
path = g_value_get_string (value);
if (path != NULL)
{
self->source_files = realpath (path, NULL);
if (self->source_files == NULL)
{
/* It doesn't exist. Keep the non-canonical path so we
* can warn about it later */
self->source_files = g_strdup (path);
}
}
break;
case PROP_TOOLS_DIRECTORY:
/* Construct-only */
g_return_if_fail (self->tools_dir == NULL);
self->tools_dir = g_value_dup_string (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
}
}
static void
pv_runtime_constructed (GObject *object)
{
PvRuntime *self = PV_RUNTIME (object);
G_OBJECT_CLASS (pv_runtime_parent_class)->constructed (object);
g_return_if_fail (self->bubblewrap != NULL);
g_return_if_fail (self->original_environ != NULL);
g_return_if_fail (self->provider_in_current_namespace != NULL);
g_return_if_fail (self->provider_in_container_namespace != NULL);
g_return_if_fail (self->source_files != NULL);
g_return_if_fail (self->tools_dir != NULL);
}
static gboolean
pv_runtime_garbage_collect (PvRuntime *self,
PvBwrapLock *mutable_parent_lock,
GError **error)
{
g_auto(GLnxDirFdIterator) iter = { FALSE };
g_return_val_if_fail (PV_IS_RUNTIME (self), FALSE);
g_return_val_if_fail (self->mutable_parent != NULL, FALSE);
g_return_val_if_fail (error == NULL || *error == NULL, FALSE);
/* We don't actually *use* this: it just acts as an assertion that
* we are holding the lock on the parent directory. */
g_return_val_if_fail (mutable_parent_lock != NULL, FALSE);
if (!glnx_dirfd_iterator_init_at (AT_FDCWD, self->mutable_parent,
TRUE, &iter, error))
return FALSE;
while (TRUE)
{
g_autoptr(GError) local_error = NULL;
g_autoptr(PvBwrapLock) temp_lock = NULL;
g_autofree gchar *keep = NULL;
g_autofree gchar *ref = NULL;
struct dirent *dent;
struct stat ignore;
if (!glnx_dirfd_iterator_next_dent_ensure_dtype (&iter, &dent,
NULL, error))
return FALSE;
if (dent == NULL)
break;
switch (dent->d_type)
{
case DT_DIR:
break;
case DT_BLK:
case DT_CHR:
case DT_FIFO:
case DT_LNK:
case DT_REG:
case DT_SOCK:
case DT_UNKNOWN:
default:
g_debug ("Ignoring %s/%s: not a directory",
self->mutable_parent, dent->d_name);
continue;
}
if (!g_str_has_prefix (dent->d_name, "tmp-"))
{
g_debug ("Ignoring %s/%s: not tmp-*",
self->mutable_parent, dent->d_name);
continue;
}
g_debug ("Found temporary runtime %s/%s, considering whether to "
"delete it...",
self->mutable_parent, dent->d_name);
keep = g_build_filename (dent->d_name, "keep", NULL);
if (glnx_fstatat (self->mutable_parent_fd, keep, &ignore,
AT_SYMLINK_NOFOLLOW, &local_error))
{
g_debug ("Not deleting \"%s/%s\": ./keep exists",
self->mutable_parent, dent->d_name);
continue;
}
else if (!g_error_matches (local_error, G_IO_ERROR,
G_IO_ERROR_NOT_FOUND))
{
/* EACCES or something? Give it the benefit of the doubt */
g_warning ("Not deleting \"%s/%s\": unable to stat ./keep: %s",
self->mutable_parent, dent->d_name, local_error->message);
g_clear_error (&local_error);
continue;
}
g_clear_error (&local_error);
ref = g_build_filename (dent->d_name, ".ref", NULL);
temp_lock = pv_bwrap_lock_new (self->mutable_parent_fd, ref,
(PV_BWRAP_LOCK_FLAGS_CREATE |
PV_BWRAP_LOCK_FLAGS_WRITE),
&local_error);
if (temp_lock == NULL)
{
g_debug ("Ignoring \"%s/%s\": unable to get lock: %s",
self->mutable_parent, dent->d_name,
local_error->message);
g_clear_error (&local_error);
continue;
}
g_debug ("Deleting \"%s/%s\"...", self->mutable_parent, dent->d_name);
/* We have the lock, which would not have happened if someone was
* still using the runtime, so we can safely delete it. */
if (!glnx_shutil_rm_rf_at (self->mutable_parent_fd, dent->d_name,
NULL, &local_error))
{
g_debug ("Unable to delete %s/%s: %s",
self->mutable_parent, dent->d_name, local_error->message);
g_clear_error (&local_error);
continue;
}
}
return TRUE;
}
static gboolean
pv_runtime_init_mutable (PvRuntime *self,
GError **error)
{
g_autofree gchar *dest_usr = NULL;
g_autofree gchar *source_usr_subdir = NULL;
g_autofree gchar *temp_dir = NULL;
g_autoptr(GDir) dir = NULL;
g_autoptr(PvBwrapLock) copy_lock = NULL;
g_autoptr(PvBwrapLock) mutable_lock = NULL;
g_autoptr(PvBwrapLock) source_lock = NULL;
const char *member;
const char *source_usr;
glnx_autofd int temp_dir_fd = -1;
gboolean is_just_usr;
/* Nothing to do in this case */
if (self->mutable_parent == NULL)
return TRUE;
if (g_mkdir_with_parents (self->mutable_parent, 0700) != 0)
return glnx_throw_errno_prefix (error, "Unable to create %s",
self->mutable_parent);
if (!glnx_opendirat (AT_FDCWD, self->mutable_parent, TRUE,
&self->mutable_parent_fd, error))
return FALSE;
/* Lock the parent directory. Anything that directly manipulates the
* temporary runtimes is expected to do the same, so that
* it cannot be deleting temporary runtimes at the same time we're
* creating them.
*
* This is a read-mode lock: it's OK to create more than one temporary
* runtime in parallel, as long as nothing is deleting them
* concurrently. */
mutable_lock = pv_bwrap_lock_new (self->mutable_parent_fd, ".ref",
PV_BWRAP_LOCK_FLAGS_CREATE,
error);
if (mutable_lock == NULL)
return glnx_prefix_error (error, "Unable to lock \"%s/%s\"",
self->mutable_parent, ".ref");
/* GC old runtimes (if they have become unused) before we create a
* new one. This means we should only ever have one temporary runtime
* copy per game that is run concurrently. */
if ((self->flags & PV_RUNTIME_FLAGS_GC_RUNTIMES) != 0 &&
!pv_runtime_garbage_collect (self, mutable_lock, error))
return FALSE;
temp_dir = g_build_filename (self->mutable_parent, "tmp-XXXXXX", NULL);
if (g_mkdtemp (temp_dir) == NULL)
return glnx_throw_errno_prefix (error,
"Cannot create temporary directory \"%s\"",
temp_dir);
source_usr_subdir = g_build_filename (self->source_files, "usr", NULL);
dest_usr = g_build_filename (temp_dir, "usr", NULL);
is_just_usr = !g_file_test (source_usr_subdir, G_FILE_TEST_IS_DIR);
if (is_just_usr)
{
/* ${source_files}/usr does not exist, so assume it's a merged /usr,
* for example ./scout/files. Copy ${source_files}/bin to
* ${temp_dir}/usr/bin, etc. */
source_usr = self->source_files;
if (!pv_cheap_tree_copy (self->source_files, dest_usr,
PV_COPY_FLAGS_NONE, error))
return FALSE;
}
else
{
/* ${source_files}/usr exists, so assume it's a complete sysroot.
* Merge ${source_files}/bin and ${source_files}/usr/bin into
* ${temp_dir}/usr/bin, etc. */
source_usr = source_usr_subdir;
if (!pv_cheap_tree_copy (self->source_files, temp_dir,
PV_COPY_FLAGS_USRMERGE, error))
return FALSE;
}
if (!glnx_opendirat (-1, temp_dir, FALSE, &temp_dir_fd, error))
return FALSE;
/* We need to break the hard link for the lock file, otherwise the
* temporary copy will share its locked/unlocked state with the
* original. */
if (TEMP_FAILURE_RETRY (unlinkat (temp_dir_fd, ".ref", 0)) != 0
&& errno != ENOENT)
return glnx_throw_errno_prefix (error,
"Cannot remove \"%s/.ref\"",
temp_dir);
if (TEMP_FAILURE_RETRY (unlinkat (temp_dir_fd, "usr/.ref", 0)) != 0
&& errno != ENOENT)
return glnx_throw_errno_prefix (error,
"Cannot remove \"%s/usr/.ref\"",
temp_dir);
/* Create the copy in a pre-locked state. After the lock on the parent
* directory is released, the copy continues to have a read lock,
* preventing it from being modified or deleted while in use (even if
* a cleanup process successfully obtains a write lock on the parent).
*
* Because we control the structure of the runtime in this case, we
* actually lock /usr/.ref instead of /.ref, and ensure that /.ref
* is a symlink to it. This might become important if we pass the
* runtime's /usr to Flatpak, which normally takes out a lock on
* /usr/.ref (obviously this will only work if the runtime happens
* to be merged-/usr). */
copy_lock = pv_bwrap_lock_new (temp_dir_fd, "usr/.ref",
PV_BWRAP_LOCK_FLAGS_CREATE,
error);
if (copy_lock == NULL)
return glnx_prefix_error (error,
"Unable to lock \"%s/.ref\" in temporary runtime",
dest_usr);
if (is_just_usr)
{
if (TEMP_FAILURE_RETRY (symlinkat ("usr/.ref",
temp_dir_fd,
".ref")) != 0)
return glnx_throw_errno_prefix (error,
"Cannot create symlink \"%s/.ref\" -> usr/.ref",
temp_dir);
}
dir = g_dir_open (source_usr, 0, error);
if (dir == NULL)
return FALSE;
for (member = g_dir_read_name (dir);
member != NULL;
member = g_dir_read_name (dir))
{
/* Create symlinks ${temp_dir}/bin -> usr/bin, etc. if missing.
*
* Also make ${temp_dir}/etc, ${temp_dir}/var symlinks to etc
* and var, for the benefit of tools like capsule-capture-libs
* accessing /etc/ld.so.cache in the incomplete container (for the
* final container command-line they get merged by bind_runtime()
* instead). */
if (g_str_equal (member, "bin") ||
g_str_equal (member, "etc") ||
(g_str_has_prefix (member, "lib") &&
!g_str_equal (member, "libexec")) ||
g_str_equal (member, "sbin") ||
g_str_equal (member, "var"))
{
g_autofree gchar *dest = g_build_filename (temp_dir, member, NULL);
g_autofree gchar *target = g_build_filename ("usr", member, NULL);
if (symlink (target, dest) != 0)
{
/* Ignore EEXIST in the case where it was not just /usr:
* it's fine if the runtime we copied from source_files
* already had either directories or symlinks in its root
* directory */
if (is_just_usr || errno != EEXIST)
return glnx_throw_errno_prefix (error,
"Cannot create symlink \"%s\" -> %s",
dest, target);
}
}
}
/* Hand over from holding a lock on the source to just holding a lock
* on the copy. We'll release source_lock when we leave this scope */
source_lock = g_steal_pointer (&self->runtime_lock);
self->runtime_lock = g_steal_pointer (©_lock);
self->mutable_sysroot = g_steal_pointer (&temp_dir);
self->mutable_sysroot_fd = glnx_steal_fd (&temp_dir_fd);
return TRUE;
}
static gboolean
pv_runtime_initable_init (GInitable *initable,
GCancellable *cancellable G_GNUC_UNUSED,
GError **error)
{
PvRuntime *self = PV_RUNTIME (initable);
g_autofree gchar *contents = NULL;
g_autofree gchar *files_ref = NULL;
g_autofree gchar *os_release = NULL;
gsize len;
g_return_val_if_fail (PV_IS_RUNTIME (self), FALSE);
g_return_val_if_fail (error == NULL || *error == NULL, FALSE);
/* If we are in Flatpak container we don't expect to have a working bwrap */
if (!g_file_test ("/.flatpak-info", G_FILE_TEST_IS_REGULAR)
&& !g_file_test (self->bubblewrap, G_FILE_TEST_IS_EXECUTABLE))
{
return glnx_throw (error, "\"%s\" is not executable",
self->bubblewrap);
}
if (self->mutable_parent != NULL
&& !g_file_test (self->mutable_parent, G_FILE_TEST_IS_DIR))
{
return glnx_throw (error, "\"%s\" is not a directory",
self->mutable_parent);
}
if (!g_file_test (self->source_files, G_FILE_TEST_IS_DIR))
{
return glnx_throw (error, "\"%s\" is not a directory",
self->source_files);
}
if (!g_file_test (self->tools_dir, G_FILE_TEST_IS_DIR))
{
return glnx_throw (error, "\"%s\" is not a directory",
self->tools_dir);
}
/* Take a lock on the runtime until we're finished with setup,
* to make sure it doesn't get deleted.
*
* If the runtime is mounted read-only in the container, it will
* continue to be locked until all processes in the container exit.
* If we make a temporary mutable copy, we only hold this lock until
* setup has finished. */
files_ref = g_build_filename (self->source_files, ".ref", NULL);
self->runtime_lock = pv_bwrap_lock_new (AT_FDCWD, files_ref,
PV_BWRAP_LOCK_FLAGS_CREATE,
error);
/* If the runtime is being deleted, ... don't use it, I suppose? */
if (self->runtime_lock == NULL)
return FALSE;
if (!pv_runtime_init_mutable (self, error))
return FALSE;
if (self->mutable_sysroot != NULL)
{
self->overrides_in_container = "/usr/lib/pressure-vessel/overrides";
self->overrides = g_build_filename (self->mutable_sysroot,
self->overrides_in_container, NULL);
self->runtime_files = self->mutable_sysroot;
}
else
{
/* We currently only need a temporary directory if we don't have
* a mutable sysroot to work with. */
self->tmpdir = g_dir_make_tmp ("pressure-vessel-wrap.XXXXXX", error);
if (self->tmpdir == NULL)
return FALSE;
self->overrides = g_build_filename (self->tmpdir, "overrides", NULL);
self->overrides_in_container = "/overrides";
self->runtime_files = self->source_files;
}
self->runtime_files_on_host = pv_current_namespace_path_to_host_path (self->runtime_files);
g_mkdir (self->overrides, 0700);
self->runtime_usr = g_build_filename (self->runtime_files, "usr", NULL);
if (g_file_test (self->runtime_usr, G_FILE_TEST_IS_DIR))
{
self->runtime_is_just_usr = FALSE;
}
else
{
/* runtime_files is just a merged /usr. */
self->runtime_is_just_usr = TRUE;
g_free (self->runtime_usr);
self->runtime_usr = g_strdup (self->runtime_files);
}
self->libcapsule_knowledge = g_build_filename (self->runtime_usr,
"lib", "steamrt",
"libcapsule-knowledge.keyfile",
NULL);
if (!g_file_test (self->libcapsule_knowledge, G_FILE_TEST_EXISTS))
g_clear_pointer (&self->libcapsule_knowledge, g_free);
os_release = g_build_filename (self->runtime_usr, "lib", "os-release", NULL);
/* TODO: Teach SrtSystemInfo to be able to load lib/os-release from
* a merged-/usr, so we don't need to open-code this here */
if (g_file_get_contents (os_release, &contents, &len, NULL))
{
gsize i;
g_autofree gchar *id = NULL;
g_autofree gchar *version_id = NULL;
char *beginning_of_line = contents;
for (i = 0; i < len; i++)
{
if (contents[i] == '\n')
{
contents[i] = '\0';
if (id == NULL &&
g_str_has_prefix (beginning_of_line, "ID="))
id = g_shell_unquote (beginning_of_line + strlen ("ID="), NULL);
else if (version_id == NULL &&
g_str_has_prefix (beginning_of_line, "VERSION_ID="))
version_id = g_shell_unquote (beginning_of_line + strlen ("VERSION_ID="), NULL);
beginning_of_line = contents + i + 1;
}
}
if (g_strcmp0 (id, "steamrt") == 0)
{
self->is_steamrt = TRUE;
if (g_strcmp0 (version_id, "1") == 0)
self->is_scout = TRUE;
}
}
/* Path that, when resolved in the host namespace, points to the provider */
self->provider_in_host_namespace =
pv_current_namespace_path_to_host_path (self->provider_in_current_namespace);
/* If we are in a Flatpak environment we expect to have the host system
* mounted in `/run/host`. Otherwise we assume that the host system, in the
* current namespace, is the root. */
if (g_file_test ("/.flatpak-info", G_FILE_TEST_IS_REGULAR))
self->host_in_current_namespace = "/run/host";
else
self->host_in_current_namespace = "/";
return TRUE;
}
void
pv_runtime_cleanup (PvRuntime *self)
{
g_autoptr(GError) local_error = NULL;
g_return_if_fail (PV_IS_RUNTIME (self));
if (self->tmpdir != NULL &&
!glnx_shutil_rm_rf_at (-1, self->tmpdir, NULL, &local_error))
{
g_warning ("Unable to delete temporary directory: %s",
local_error->message);
}
g_clear_pointer (&self->overrides, g_free);
g_clear_pointer (&self->container_access, g_free);
g_clear_pointer (&self->container_access_adverb, flatpak_bwrap_free);
g_clear_pointer (&self->tmpdir, g_free);
}
static void
pv_runtime_finalize (GObject *object)
{
PvRuntime *self = PV_RUNTIME (object);
pv_runtime_cleanup (self);
g_free (self->bubblewrap);
g_strfreev (self->original_environ);
g_free (self->libcapsule_knowledge);
glnx_close_fd (&self->mutable_parent_fd);
g_free (self->mutable_parent);
glnx_close_fd (&self->mutable_sysroot_fd);
g_free (self->mutable_sysroot);
g_free (self->provider_in_current_namespace);
g_free (self->provider_in_host_namespace);
g_free (self->provider_in_container_namespace);
g_free (self->runtime_files_on_host);
g_free (self->runtime_usr);
g_free (self->source_files);
g_free (self->tools_dir);
if (self->runtime_lock != NULL)
pv_bwrap_lock_free (self->runtime_lock);
G_OBJECT_CLASS (pv_runtime_parent_class)->finalize (object);
}
static void
pv_runtime_class_init (PvRuntimeClass *cls)
{
GObjectClass *object_class = G_OBJECT_CLASS (cls);
object_class->get_property = pv_runtime_get_property;
object_class->set_property = pv_runtime_set_property;
object_class->constructed = pv_runtime_constructed;
object_class->finalize = pv_runtime_finalize;
properties[PROP_BUBBLEWRAP] =
g_param_spec_string ("bubblewrap", "Bubblewrap",
"Bubblewrap executable",
NULL,
(G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY |
G_PARAM_STATIC_STRINGS));
properties[PROP_ORIGINAL_ENVIRON] =
g_param_spec_boxed ("original-environ", "Original environ",
"The original environ to use",
G_TYPE_STRV,
(G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY |
G_PARAM_STATIC_STRINGS));
properties[PROP_FLAGS] =
g_param_spec_flags ("flags", "Flags",
"Flags affecting how we set up the runtime",
PV_TYPE_RUNTIME_FLAGS, PV_RUNTIME_FLAGS_NONE,
(G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY |
G_PARAM_STATIC_STRINGS));
properties[PROP_MUTABLE_PARENT] =
g_param_spec_string ("mutable-parent", "Mutable parent",
("Path to a directory in which to create a "
"mutable copy of source-files, or NULL"),
NULL,
(G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY |
G_PARAM_STATIC_STRINGS));
properties[PROP_PROVIDER_IN_CURRENT_NAMESPACE] =
g_param_spec_string ("provider-in-current-namespace",
"Provider in current namespace",
("Path that, when resolved in the current namespace, "
"points to the provider"),
NULL,
(G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY |
G_PARAM_STATIC_STRINGS));
properties[PROP_PROVIDER_IN_CONTAINER_NAMESPACE] =
g_param_spec_string ("provider-in-container-namespace",
"Provider in container namespace",
("Path to a directory in which the provider will be "
"accessible from inside the container"),
NULL,
(G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY |
G_PARAM_STATIC_STRINGS));
properties[PROP_SOURCE_FILES] =
g_param_spec_string ("source-files", "Source files",
("Path to read-only runtime files (merged-/usr "
"or sysroot) in current namespace"),
NULL,
(G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY |
G_PARAM_STATIC_STRINGS));
properties[PROP_TOOLS_DIRECTORY] =
g_param_spec_string ("tools-directory", "Tools directory",
"Path to pressure-vessel/bin in current namespace",
NULL,
(G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY |
G_PARAM_STATIC_STRINGS));
g_object_class_install_properties (object_class, N_PROPERTIES, properties);
}
PvRuntime *
pv_runtime_new (const char *source_files,
const char *mutable_parent,
const char *bubblewrap,
const char *tools_dir,
const char *provider_in_current_namespace,
const char *provider_in_container_namespace,
const GStrv original_environ,
PvRuntimeFlags flags,
GError **error)
{
g_return_val_if_fail (source_files != NULL, NULL);
g_return_val_if_fail (bubblewrap != NULL, NULL);
g_return_val_if_fail (tools_dir != NULL, NULL);
g_return_val_if_fail ((flags & ~(PV_RUNTIME_FLAGS_MASK)) == 0, NULL);
return g_initable_new (PV_TYPE_RUNTIME,
NULL,
error,
"bubblewrap", bubblewrap,
"original-environ", original_environ,
"mutable-parent", mutable_parent,
"source-files", source_files,
"tools-directory", tools_dir,
"provider-in-current-namespace",
provider_in_current_namespace,
"provider-in-container-namespace",
provider_in_container_namespace == NULL ? "/run/host" : provider_in_container_namespace,
"flags", flags,
NULL);
}
/* If we are using a runtime, ensure the locales to be generated,
* pass the lock fd to the executed process,
* and make it act as a subreaper for the game itself.
*
* If we were using --unshare-pid then we could use bwrap --sync-fd
* and rely on bubblewrap's init process for this, but we currently
* can't do that without breaking gameoverlayrender.so's assumptions,
* and we want -adverb for its locale functionality anyway. */
gchar *
pv_runtime_get_adverb (PvRuntime *self,
FlatpakBwrap *bwrap)
{
g_return_val_if_fail (PV_IS_RUNTIME (self), NULL);
/* This will be true if pv_runtime_bind() was successfully called. */
g_return_val_if_fail (self->adverb_in_container != NULL, NULL);
g_return_val_if_fail (bwrap != NULL, NULL);
g_return_val_if_fail (!pv_bwrap_was_finished (bwrap), NULL);
if (self->flags & PV_RUNTIME_FLAGS_GENERATE_LOCALES)
flatpak_bwrap_add_args (bwrap, "--generate-locales", NULL);
if (pv_bwrap_lock_is_ofd (self->runtime_lock))
{
int fd = pv_bwrap_lock_steal_fd (self->runtime_lock);
g_autofree gchar *fd_str = NULL;
g_debug ("Passing lock fd %d down to adverb", fd);
flatpak_bwrap_add_fd (bwrap, fd);
fd_str = g_strdup_printf ("%d", fd);
flatpak_bwrap_add_args (bwrap,
"--fd", fd_str,
NULL);
}
else
{
/*
* We were unable to take out an open file descriptor lock,
* so it will be released on fork(). Tell the adverb process
* to take out its own compatible lock instead. There will be
* a short window during which we have lost our lock but the
* adverb process has not taken its lock - that's unavoidable
* if we want to use exec() to replace ourselves with the
* container.
*
* pv_bwrap_bind_usr() arranges for /.ref to either be a
* symbolic link to /usr/.ref which is the runtime_lock
* (if opt_runtime is a merged /usr), or the runtime_lock
* itself (otherwise).
*/
g_debug ("Telling process in container to lock /.ref");
flatpak_bwrap_add_args (bwrap,
"--lock-file", "/.ref",
NULL);
}
return g_strdup (self->adverb_in_container);
}
/*
* Set self->container_access_adverb to a (possibly empty) command prefix
* that will result in the container being available at
* self->container_access, with write access to self->overrides, and
* read-only access to everything else.
*/
static gboolean
pv_runtime_provide_container_access (PvRuntime *self,
GError **error)
{
if (self->container_access_adverb != NULL)
return TRUE;
if (!self->runtime_is_just_usr)
{
static const char * const need_top_level[] =
{
"bin",
"etc",
"lib",
"sbin",
};
gsize i;
/* If we are working with a runtime that has a root directory containing
* /etc and /usr, we can just access it via its path - that's "the same
* shape" that the final system is going to be.
*
* In particular, if we are working with a writeable copy of a runtime
* that we are editing in-place, it's always like that. */
g_debug ("%s: Setting up runtime without using bwrap",
G_STRFUNC);
self->container_access_adverb = flatpak_bwrap_new (NULL);
self->container_access = g_strdup (self->runtime_files);
/* This is going to go poorly for us if the runtime is not complete.
* !self->runtime_is_just_usr means we know it has a /usr subdirectory,
* but that doesn't guarantee that it has /bin, /lib, /sbin (either
* in the form of real directories or symlinks into /usr) and /etc
* (for at least /etc/alternatives and /etc/ld.so.cache).
*
* This check is not intended to be exhaustive, merely something
* that will catch obvious mistakes like completely forgetting to
* add the merged-/usr symlinks.
*
* In practice we also need /lib64 for 64-bit-capable runtimes,
* but a pure 32-bit runtime would legitimately not have that,
* so we don't check for it. */
for (i = 0; i < G_N_ELEMENTS (need_top_level); i++)
{
g_autofree gchar *path = g_build_filename (self->runtime_files,
need_top_level[i],
NULL);
if (!g_file_test (path, G_FILE_TEST_IS_DIR))
g_warning ("%s does not exist, this probably won't work",
path);
}
}
else
{
g_autofree gchar *etc = NULL;
g_autofree gchar *etc_dest = NULL;
/* Otherwise, will we need to use bwrap to build a directory hierarchy
* that is the same shape as the final system. */
g_debug ("%s: Using bwrap to set up runtime that is just /usr",
G_STRFUNC);
/* By design, writeable copies of the runtime never need this:
* the writeable copy is a complete sysroot, not just a merged /usr. */
g_assert (self->mutable_sysroot == NULL);
g_assert (self->tmpdir != NULL);
self->container_access = g_build_filename (self->tmpdir, "mnt", NULL);
g_mkdir (self->container_access, 0700);
self->container_access_adverb = flatpak_bwrap_new (NULL);
flatpak_bwrap_add_args (self->container_access_adverb,
self->bubblewrap,
"--ro-bind", "/", "/",
"--bind", self->overrides, self->overrides,
"--tmpfs", self->container_access,
NULL);
if (!pv_bwrap_bind_usr (self->container_access_adverb,
self->runtime_files_on_host,
self->runtime_files,
self->container_access,
error))
return FALSE;
/* For simplicity we bind all of /etc here */
etc = g_build_filename (self->runtime_files_on_host,
"etc", NULL);
etc_dest = g_build_filename (self->container_access,
"etc", NULL);
flatpak_bwrap_add_args (self->container_access_adverb,
"--ro-bind", etc, etc_dest,
NULL);
}
return TRUE;
}
static FlatpakBwrap *
pv_runtime_get_capsule_capture_libs (PvRuntime *self,
RuntimeArchitecture *arch)
{
const gchar *ld_library_path;
g_autofree gchar *remap_usr = NULL;
g_autofree gchar *remap_lib = NULL;
FlatpakBwrap *ret = pv_bwrap_copy (self->container_access_adverb);
/* If we have a custom "LD_LIBRARY_PATH", we want to preserve
* it when calling capsule-capture-libs */
ld_library_path = g_environ_getenv (self->original_environ, "LD_LIBRARY_PATH");
if (ld_library_path != NULL)
flatpak_bwrap_set_env (ret, "LD_LIBRARY_PATH", ld_library_path, TRUE);
/* Every symlink that starts with exactly /usr/ */
remap_usr = g_strjoin (NULL, "/usr/", "=",
self->provider_in_container_namespace,
"/usr/", NULL);
/* Every symlink that starts with /lib, e.g. /lib64 */
remap_lib = g_strjoin (NULL, "/lib", "=",
self->provider_in_container_namespace,
"/lib", NULL);
flatpak_bwrap_add_args (ret,
arch->capsule_capture_libs,
"--container", self->container_access,
"--remap-link-prefix", remap_usr,
"--remap-link-prefix", remap_lib,
"--provider",
self->provider_in_current_namespace,
NULL);
if (self->libcapsule_knowledge)
flatpak_bwrap_add_args (ret,
"--library-knowledge", self->libcapsule_knowledge,
NULL);
return ret;
}
static gboolean
try_bind_dri (PvRuntime *self,
RuntimeArchitecture *arch,
FlatpakBwrap *bwrap,
const char *libdir,
GError **error)
{
/* e.g. /usr/lib/dri */
g_autofree gchar *dri = g_build_filename (libdir, "dri", NULL);
/* e.g. /run/host/usr/lib/dri */
g_autofree gchar *dri_in_current_namespace = g_build_filename (
self->provider_in_current_namespace,
dri,
NULL);
g_autofree gchar *s2tc = g_build_filename (libdir, "libtxc_dxtn.so", NULL);
g_autofree gchar *s2tc_in_current_namespace = g_build_filename (
self->provider_in_current_namespace,
s2tc,
NULL);
if (g_file_test (dri_in_current_namespace, G_FILE_TEST_IS_DIR))
{
g_autoptr(FlatpakBwrap) temp_bwrap = NULL;
g_autofree gchar *expr = NULL;
g_autoptr(GDir) dir = NULL;
const char *member;
g_debug ("Collecting dependencies of DRI drivers in \"%s\"...", dri);
expr = g_strdup_printf ("only-dependencies:if-exists:path-match:%s/dri/*.so",
libdir);
if (!pv_runtime_provide_container_access (self, error))
return FALSE;
temp_bwrap = pv_runtime_get_capsule_capture_libs (self, arch);
flatpak_bwrap_add_args (temp_bwrap,
"--dest", arch->libdir_in_current_namespace,
expr,
NULL);
flatpak_bwrap_finish (temp_bwrap);
if (!pv_bwrap_run_sync (temp_bwrap, NULL, error))
return FALSE;
g_clear_pointer (&temp_bwrap, flatpak_bwrap_free);
dir = g_dir_open (dri_in_current_namespace, 0, error);
if (dir == NULL)
return FALSE;
for (member = g_dir_read_name (dir);
member != NULL;
member = g_dir_read_name (dir))
{
g_autofree gchar *target = g_build_filename (self->provider_in_container_namespace,
dri, member, NULL);
g_autofree gchar *dest = g_build_filename (arch->libdir_in_current_namespace,
"dri", member, NULL);
g_debug ("Creating symbolic link \"%s\" -> \"%s\" for \"%s\" DRI driver",
dest, target, arch->details->tuple);
/* Delete an existing symlink if any, like ln -f */
if (unlink (dest) != 0 && errno != ENOENT)
return glnx_throw_errno_prefix (error,
"Unable to remove \"%s\"",
dest);
if (symlink (target, dest) != 0)
return glnx_throw_errno_prefix (error,
"Unable to create symlink \"%s\" -> \"%s\"",
dest, target);
}
}
if (g_file_test (s2tc_in_current_namespace, G_FILE_TEST_EXISTS))
{
g_autoptr(FlatpakBwrap) temp_bwrap = NULL;
g_autofree gchar *expr = NULL;
g_debug ("Collecting s2tc \"%s\" and its dependencies...", s2tc);
expr = g_strdup_printf ("path-match:%s", s2tc);
if (!pv_runtime_provide_container_access (self, error))
return FALSE;
temp_bwrap = pv_runtime_get_capsule_capture_libs (self, arch);
flatpak_bwrap_add_args (temp_bwrap,
"--dest", arch->libdir_in_current_namespace,
expr,
NULL);
flatpak_bwrap_finish (temp_bwrap);
if (!pv_bwrap_run_sync (temp_bwrap, NULL, error))
return FALSE;
}
return TRUE;
}
typedef enum
{
ICD_KIND_NONEXISTENT,
ICD_KIND_ABSOLUTE,
ICD_KIND_SONAME
} IcdKind;
typedef struct
{
/* (type SrtEglIcd) or (type SrtVulkanIcd) or (type SrtVdpauDriver)
* or (type SrtVaApiDriver) or (type SrtVulkanLayer) */
gpointer icd;
gchar *resolved_library;
/* Last entry is always NONEXISTENT.
* For VA-API, we use [0] and ignore the other elements.
* For the rest, this is keyed by the index of a multiarch tuple
* in multiarch_tuples. */
IcdKind kinds[G_N_ELEMENTS (multiarch_tuples)];
/* Last entry is always NULL */
gchar *paths_in_container[G_N_ELEMENTS (multiarch_tuples)];
} IcdDetails;
static IcdDetails *
icd_details_new (gpointer icd)
{
IcdDetails *self;
gsize i;
g_return_val_if_fail (G_IS_OBJECT (icd), NULL);
g_return_val_if_fail (SRT_IS_EGL_ICD (icd) ||
SRT_IS_VULKAN_ICD (icd) ||
SRT_IS_VULKAN_LAYER (icd) ||
SRT_IS_VDPAU_DRIVER (icd) ||
SRT_IS_VA_API_DRIVER (icd),
NULL);
self = g_slice_new0 (IcdDetails);
self->icd = g_object_ref (icd);
self->resolved_library = NULL;
for (i = 0; i < G_N_ELEMENTS (multiarch_tuples); i++)
{
self->kinds[i] = ICD_KIND_NONEXISTENT;
self->paths_in_container[i] = NULL;
}
return self;
}
static void
icd_details_free (IcdDetails *self)
{
gsize i;
g_object_unref (self->icd);
g_free (self->resolved_library);
for (i = 0; i < G_N_ELEMENTS (multiarch_tuples); i++)
g_free (self->paths_in_container[i]);
g_slice_free (IcdDetails, self);
}
G_DEFINE_AUTOPTR_CLEANUP_FUNC (IcdDetails, icd_details_free)
/*
* @sequence_number: numbered directory to use. Set to G_MAXSIZE to
* use just @subdir without a numbered sub directory
*/
static gboolean
bind_icd (PvRuntime *self,
RuntimeArchitecture *arch,
gsize sequence_number,
const char *subdir,
IcdDetails *details,
GError **error)
{
static const char options[] = "if-exists:if-same-abi";
g_autofree gchar *in_current_namespace = NULL;
g_autofree gchar *pattern = NULL;
g_autofree gchar *dependency_pattern = NULL;
g_autofree gchar *seq_str = NULL;
const char *mode;
g_autoptr(FlatpakBwrap) temp_bwrap = NULL;
gsize multiarch_index;
g_return_val_if_fail (runtime_architecture_check_valid (arch), FALSE);
g_return_val_if_fail (subdir != NULL, FALSE);
g_return_val_if_fail (details != NULL, FALSE);
g_return_val_if_fail (details->resolved_library != NULL, FALSE);
multiarch_index = arch->multiarch_index;
g_return_val_if_fail (details->kinds[multiarch_index] == ICD_KIND_NONEXISTENT,
FALSE);
g_return_val_if_fail (details->paths_in_container[multiarch_index] == NULL,
FALSE);
g_return_val_if_fail (error == NULL || *error == NULL, FALSE);
if (g_path_is_absolute (details->resolved_library))
{
details->kinds[multiarch_index] = ICD_KIND_ABSOLUTE;
mode = "path";
/* Because the ICDs might have collisions among their
* basenames (might differ only by directory), we put each
* in its own numbered directory. */
if (sequence_number != G_MAXSIZE)
{
seq_str = g_strdup_printf ("%" G_GSIZE_FORMAT, sequence_number);
in_current_namespace = g_build_filename (arch->libdir_in_current_namespace,
subdir, seq_str, NULL);
}
else
{
in_current_namespace = g_build_filename (arch->libdir_in_current_namespace,
subdir, NULL);
}
g_debug ("Ensuring %s exists", in_current_namespace);
if (g_mkdir_with_parents (in_current_namespace, 0700) != 0)
return glnx_throw_errno_prefix (error, "Unable to create %s", in_current_namespace);
}
else
{
/* ICDs in the default search path by definition can't collide:
* one of them is the first one we find, and we use that one. */
details->kinds[multiarch_index] = ICD_KIND_SONAME;
mode = "soname";
}
pattern = g_strdup_printf ("no-dependencies:even-if-older:%s:%s:%s",
options, mode, details->resolved_library);
dependency_pattern = g_strdup_printf ("only-dependencies:%s:%s:%s",
options, mode, details->resolved_library);
if (!pv_runtime_provide_container_access (self, error))
return FALSE;
temp_bwrap = pv_runtime_get_capsule_capture_libs (self, arch);
flatpak_bwrap_add_args (temp_bwrap,
"--dest",
in_current_namespace == NULL ? arch->libdir_in_current_namespace : in_current_namespace,
pattern,
NULL);
flatpak_bwrap_finish (temp_bwrap);
if (!pv_bwrap_run_sync (temp_bwrap, NULL, error))
return FALSE;
g_clear_pointer (&temp_bwrap, flatpak_bwrap_free);
if (in_current_namespace != NULL)
{
/* Try to remove the directory we created. If it succeeds, then we
* can optimize slightly by not capturing the dependencies: there's
* no point, because we know we didn't create a symlink to the ICD
* itself. (It must have been nonexistent or for a different ABI.) */
if (g_rmdir (in_current_namespace) == 0)
{
details->kinds[multiarch_index] = ICD_KIND_NONEXISTENT;
return TRUE;
}
}
temp_bwrap = pv_runtime_get_capsule_capture_libs (self, arch);
flatpak_bwrap_add_args (temp_bwrap,
"--dest", arch->libdir_in_current_namespace,
dependency_pattern,
NULL);
flatpak_bwrap_finish (temp_bwrap);
if (!pv_bwrap_run_sync (temp_bwrap, NULL, error))
return FALSE;
g_clear_pointer (&temp_bwrap, flatpak_bwrap_free);
if (details->kinds[multiarch_index] == ICD_KIND_ABSOLUTE)
{
g_assert (in_current_namespace != NULL);
details->paths_in_container[multiarch_index] = g_build_filename (arch->libdir_in_container,
subdir,
seq_str ? seq_str : "",
glnx_basename (details->resolved_library),
NULL);
}
return TRUE;
}
static gboolean
bind_runtime (PvRuntime *self,
FlatpakBwrap *bwrap,
GHashTable *extra_locked_vars_to_unset,
GHashTable *extra_locked_vars_to_inherit,
GError **error)
{
static const char * const bind_mutable[] =
{
"etc",
"var/cache",
"var/lib"
};
static const char * const dont_bind[] =
{
"/etc/group",
"/etc/passwd",
"/etc/host.conf",
"/etc/hosts",
"/etc/localtime",
"/etc/machine-id",
"/etc/resolv.conf",
"/var/lib/dbus",
"/var/lib/dhcp",
"/var/lib/sudo",
"/var/lib/urandom",
NULL
};
g_autofree gchar *xrd = g_strdup_printf ("/run/user/%ld", (long) geteuid ());
gsize i;
const gchar *member;
g_return_val_if_fail (PV_IS_RUNTIME (self), FALSE);
g_return_val_if_fail (!pv_bwrap_was_finished (bwrap), FALSE);
g_return_val_if_fail (error == NULL || *error == NULL, FALSE);
if (!pv_bwrap_bind_usr (bwrap, self->runtime_files_on_host, self->runtime_files, "/", error))
return FALSE;
/* In the case where we have a mutable sysroot, we mount the overrides
* as part of /usr. Make /overrides a symbolic link, to be nice to
* older steam-runtime-tools versions. */
if (self->mutable_sysroot != NULL)
{
g_assert (self->overrides_in_container[0] == '/');
g_assert (g_strcmp0 (self->overrides_in_container, "/overrides") != 0);
flatpak_bwrap_add_args (bwrap,
"--symlink",
&self->overrides_in_container[1],
"/overrides",
NULL);
/* Also make a matching symbolic link on disk, to make it easier
* to inspect the sysroot. */
if (TEMP_FAILURE_RETRY (symlinkat (&self->overrides_in_container[1],
self->mutable_sysroot_fd,
"overrides")) != 0)
return glnx_throw_errno_prefix (error,
"Unable to create symlink \"%s/overrides\" -> \"%s\"",
self->mutable_sysroot,
&self->overrides_in_container[1]);
}
flatpak_bwrap_add_args (bwrap,
"--tmpfs", "/tmp",
"--tmpfs", "/var",
"--symlink", "../run", "/var/run",
NULL);
flatpak_bwrap_set_env (bwrap, "XDG_RUNTIME_DIR", xrd, TRUE);
if (g_strcmp0 (self->provider_in_host_namespace, "/") != 0
|| g_strcmp0 (self->provider_in_container_namespace, "/run/host") != 0)
{
if (!pv_bwrap_bind_usr (bwrap,
self->provider_in_host_namespace,
self->provider_in_current_namespace,
self->provider_in_container_namespace,
error))
return FALSE;
}
for (i = 0; i < G_N_ELEMENTS (bind_mutable); i++)
{
g_autofree gchar *path = g_build_filename (self->runtime_files,
bind_mutable[i],
NULL);
g_autoptr(GDir) dir = NULL;
dir = g_dir_open (path, 0, NULL);
if (dir == NULL)
continue;
for (member = g_dir_read_name (dir);
member != NULL;
member = g_dir_read_name (dir))
{
g_autofree gchar *dest = g_build_filename ("/", bind_mutable[i],
member, NULL);
g_autofree gchar *full = NULL;
g_autofree gchar *target = NULL;
if (g_strv_contains (dont_bind, dest))
continue;
full = g_build_filename (self->runtime_files,
bind_mutable[i],
member,
NULL);
target = glnx_readlinkat_malloc (-1, full, NULL, NULL);
if (target != NULL)
{
flatpak_bwrap_add_args (bwrap, "--symlink", target, dest, NULL);
}
else
{
/* We will run bwrap in the host system, so translate the path
* if necessary */
g_autofree gchar *on_host = pv_current_namespace_path_to_host_path (full);
flatpak_bwrap_add_args (bwrap, "--ro-bind", on_host, dest, NULL);
}
}
}
/* If we are in a Flatpak environment, we need to test if these files are
* available in the host, and not in the current environment, because we will
* run bwrap in the host system */
if (_srt_file_test_in_sysroot (self->host_in_current_namespace, -1,
"/etc/machine-id", G_FILE_TEST_EXISTS))
{
flatpak_bwrap_add_args (bwrap,
"--ro-bind", "/etc/machine-id", "/etc/machine-id",
"--symlink", "/etc/machine-id",
"/var/lib/dbus/machine-id",
NULL);
}
/* We leave this for completeness but in practice we do not expect to have
* access to the "/var" host directory because Flatpak usually just binds
* the host's "etc" and "usr". */
else if (_srt_file_test_in_sysroot (self->host_in_current_namespace, -1,
"/var/lib/dbus/machine-id",
G_FILE_TEST_EXISTS))
{
flatpak_bwrap_add_args (bwrap,
"--ro-bind", "/var/lib/dbus/machine-id",
"/etc/machine-id",
"--symlink", "/etc/machine-id",
"/var/lib/dbus/machine-id",
NULL);
}
if (_srt_file_test_in_sysroot (self->host_in_current_namespace, -1,
"/etc/resolv.conf", G_FILE_TEST_EXISTS))
flatpak_bwrap_add_args (bwrap,
"--ro-bind", "/etc/resolv.conf", "/etc/resolv.conf",
NULL);
if (_srt_file_test_in_sysroot (self->host_in_current_namespace, -1,
"/etc/host.conf", G_FILE_TEST_EXISTS))
flatpak_bwrap_add_args (bwrap,
"--ro-bind", "/etc/host.conf", "/etc/host.conf",
NULL);
if (_srt_file_test_in_sysroot (self->host_in_current_namespace, -1,
"/etc/hosts", G_FILE_TEST_EXISTS))
flatpak_bwrap_add_args (bwrap,
"--ro-bind", "/etc/hosts", "/etc/hosts",
NULL);
/* TODO: Synthesize a passwd with only the user and nobody,
* like Flatpak does? */
if (_srt_file_test_in_sysroot (self->host_in_current_namespace, -1,
"/etc/passwd", G_FILE_TEST_EXISTS))
flatpak_bwrap_add_args (bwrap,
"--ro-bind", "/etc/passwd", "/etc/passwd",
NULL);
if (_srt_file_test_in_sysroot (self->host_in_current_namespace, -1,
"/etc/group", G_FILE_TEST_EXISTS))
flatpak_bwrap_add_args (bwrap,
"--ro-bind", "/etc/group", "/etc/group",
NULL);
if (self->flags & PV_RUNTIME_FLAGS_PROVIDER_GRAPHICS_STACK)
{
if (!pv_runtime_use_provider_graphics_stack (self, bwrap, extra_locked_vars_to_unset,
extra_locked_vars_to_inherit, error))
return FALSE;
}
if (self->mutable_sysroot == NULL)
{
/* self->overrides is in a temporary directory that will be
* cleaned up before we enter the container, so we need to convert
* it into a series of --dir and --symlink instructions.
*
* We have to do this late, because it adds data fds. */
pv_bwrap_copy_tree (bwrap, self->overrides, self->overrides_in_container);
}
/* /etc/localtime and /etc/resolv.conf can not exist (or be symlinks to
* non-existing targets), in which case we don't want to attempt to create
* bogus symlinks or bind mounts, as that will cause flatpak run to fail.
*/
if (_srt_file_test_in_sysroot (self->host_in_current_namespace, -1,
"/etc/localtime", G_FILE_TEST_EXISTS))
{
g_autofree char *target = NULL;
gboolean is_reachable = FALSE;
g_autofree char *tz = flatpak_get_timezone ();
g_autofree char *timezone_content = g_strdup_printf ("%s\n", tz);
g_autofree char *localtime_in_current_namespace =
g_build_filename (self->host_in_current_namespace, "/etc/localtime", NULL);
target = glnx_readlinkat_malloc (-1, localtime_in_current_namespace, NULL, NULL);
if (target != NULL)
{
g_autoptr(GFile) base_file = NULL;
g_autoptr(GFile) target_file = NULL;
g_autofree char *target_canonical = NULL;
base_file = g_file_new_for_path ("/etc");
target_file = g_file_resolve_relative_path (base_file, target);
target_canonical = g_file_get_path (target_file);
is_reachable = g_str_has_prefix (target_canonical, "/usr/");
}
if (is_reachable)
{
flatpak_bwrap_add_args (bwrap,
"--symlink", target, "/etc/localtime",
NULL);
}
else
{
flatpak_bwrap_add_args (bwrap,
"--ro-bind", "/etc/localtime", "/etc/localtime",
NULL);
}
flatpak_bwrap_add_args_data (bwrap, "timezone",
timezone_content, -1, "/etc/timezone",
NULL);
}
return TRUE;
}
typedef enum
{
TAKE_FROM_PROVIDER_FLAGS_IF_DIR = (1 << 0),
TAKE_FROM_PROVIDER_FLAGS_IF_EXISTS = (1 << 1),
TAKE_FROM_PROVIDER_FLAGS_IF_CONTAINER_COMPATIBLE = (1 << 2),
TAKE_FROM_PROVIDER_FLAGS_COPY_FALLBACK = (1 << 3),
TAKE_FROM_PROVIDER_FLAGS_NONE = 0
} TakeFromProviderFlags;
static gboolean
pv_runtime_take_from_provider (PvRuntime *self,
FlatpakBwrap *bwrap,
const char *source_in_provider,
const char *dest_in_container,
TakeFromProviderFlags flags,
GError **error)
{
g_return_val_if_fail (PV_IS_RUNTIME (self), FALSE);
g_return_val_if_fail (!pv_bwrap_was_finished (bwrap), FALSE);
g_return_val_if_fail (error == NULL || *error == NULL, FALSE);
if (flags & TAKE_FROM_PROVIDER_FLAGS_IF_DIR)
{
if (!_srt_file_test_in_sysroot (self->provider_in_current_namespace, -1,
source_in_provider, G_FILE_TEST_IS_DIR))
return TRUE;
}
if (flags & TAKE_FROM_PROVIDER_FLAGS_IF_EXISTS)
{
if (!_srt_file_test_in_sysroot (self->provider_in_current_namespace, -1,
source_in_provider, G_FILE_TEST_EXISTS))
return TRUE;
}
if (self->mutable_sysroot != NULL)
{
/* Replace ${mutable_sysroot}/usr/lib/locale with a symlink to
* /run/host/usr/lib/locale, or similar */
g_autofree gchar *parent_in_container = NULL;
g_autofree gchar *target = NULL;
const char *base;
glnx_autofd int parent_dirfd = -1;
parent_in_container = g_path_get_dirname (dest_in_container);
parent_dirfd = _srt_resolve_in_sysroot (self->mutable_sysroot_fd,
parent_in_container,
SRT_RESOLVE_FLAGS_MKDIR_P,
NULL, error);
if (parent_dirfd < 0)
return FALSE;
base = glnx_basename (dest_in_container);
if (!glnx_shutil_rm_rf_at (parent_dirfd, base, NULL, error))
return FALSE;
/* If it isn't in /usr, /lib, etc., then the symlink will be
* dangling and this probably isn't going to work. */
if (!path_visible_in_provider_namespace (source_in_provider))
{
if (flags & TAKE_FROM_PROVIDER_FLAGS_COPY_FALLBACK)
{
glnx_autofd int file_fd = -1;
glnx_autofd int sysroot_fd = -1;
struct stat stat_buf;
if (!glnx_opendirat (-1, self->provider_in_current_namespace,
FALSE, &sysroot_fd, error))
return FALSE;
file_fd = _srt_resolve_in_sysroot (sysroot_fd, source_in_provider,
SRT_RESOLVE_FLAGS_READABLE,
NULL, error);
if (file_fd < 0)
return FALSE;
if (fstat (file_fd, &stat_buf) != 0)
{
return glnx_throw_errno_prefix (error,
"An error occurred using fstat for %s",
source_in_provider);
}
g_autofree gchar *proc_fd = g_strdup_printf ("/proc/self/fd/%d", file_fd);
return glnx_file_copy_at (AT_FDCWD, proc_fd, &stat_buf,
parent_dirfd, base,
GLNX_FILE_COPY_OVERWRITE,
NULL, error);
}
else
{
g_warning ("\"%s\" is unlikely to appear in \"%s\"",
source_in_provider, self->provider_in_container_namespace);
/* ... but try it anyway, it can't hurt */
}
}
target = g_build_filename (self->provider_in_container_namespace, source_in_provider, NULL);
if (TEMP_FAILURE_RETRY (symlinkat (target, parent_dirfd, base)) != 0)
return glnx_throw_errno_prefix (error,
"Unable to create symlink \"%s/%s\" -> \"%s\"",
self->mutable_sysroot,
dest_in_container, target);
}
else
{
/* We can't edit the runtime in-place, so tell bubblewrap to mount
* a new version over the top */
if (flags & TAKE_FROM_PROVIDER_FLAGS_IF_CONTAINER_COMPATIBLE)
{
g_autofree gchar *dest = NULL;
if (g_str_has_prefix (dest_in_container, "/usr/"))
dest = g_build_filename (self->runtime_usr,
dest_in_container + strlen ("/usr/"),
NULL);
else
dest = g_build_filename (self->runtime_files,
dest_in_container,
NULL);
if (g_file_test (source_in_provider, G_FILE_TEST_IS_DIR))
{
if (!g_file_test (dest, G_FILE_TEST_IS_DIR))
{
g_warning ("Not mounting \"%s\" over non-directory file or "
"nonexistent path \"%s\"",
source_in_provider, dest);
return TRUE;
}
}
else
{
if (g_file_test (dest, G_FILE_TEST_IS_DIR) ||
!g_file_test (dest, G_FILE_TEST_EXISTS))
{
g_warning ("Not mounting \"%s\" over directory or "
"nonexistent path \"%s\"",
source_in_provider, dest);
return TRUE;
}
}
}
flatpak_bwrap_add_args (bwrap,
"--ro-bind", source_in_provider, dest_in_container,
NULL);
}
return TRUE;
}
static gboolean
pv_runtime_remove_overridden_libraries (PvRuntime *self,
RuntimeArchitecture *arch,
GError **error)
{
static const char * const libdirs[] = { "lib", "usr/lib", "usr/lib/mesa" };
GHashTable *delete[G_N_ELEMENTS (libdirs)] = { NULL };
GLnxDirFdIterator iters[G_N_ELEMENTS (libdirs)] = { { FALSE } };
gchar *multiarch_libdirs[G_N_ELEMENTS (libdirs)] = { NULL };
gboolean ret = FALSE;
gsize i;
g_return_val_if_fail (PV_IS_RUNTIME (self), FALSE);
g_return_val_if_fail (arch != NULL, FALSE);
g_return_val_if_fail (arch->ld_so != NULL, FALSE);
g_return_val_if_fail (error == NULL || *error == NULL, FALSE);
/* Not applicable/possible if we don't have a mutable sysroot */
g_return_val_if_fail (self->mutable_sysroot != NULL, FALSE);
/* We have to figure out what we want to delete before we delete anything,
* because we can't tell whether a symlink points to a library of a
* particular SONAME if we already deleted the library. */
for (i = 0; i < G_N_ELEMENTS (libdirs); i++)
{
glnx_autofd int libdir_fd = -1;
struct dirent *dent;
multiarch_libdirs[i] = g_build_filename (libdirs[i], arch->details->tuple, NULL);
/* Mostly ignore error: if the library directory cannot be opened,
* presumably we don't need to do anything with it... */
{
g_autoptr(GError) local_error = NULL;
libdir_fd = _srt_resolve_in_sysroot (self->mutable_sysroot_fd,
multiarch_libdirs[i],
SRT_RESOLVE_FLAGS_READABLE,
NULL, &local_error);
if (libdir_fd < 0)
{
g_debug ("Cannot resolve \"%s\" in \"%s\", so no need to delete "
"libraries from it: %s",
multiarch_libdirs[i], self->mutable_sysroot,
local_error->message);
g_clear_error (&local_error);
continue;
}
}
g_debug ("Removing overridden %s libraries from \"%s\" in \"%s\"...",
arch->details->tuple, multiarch_libdirs[i], self->mutable_sysroot);
if (!glnx_dirfd_iterator_init_take_fd (&libdir_fd, &iters[i], error))
{
glnx_prefix_error (error, "Unable to start iterating \"%s/%s\"",
self->mutable_sysroot,
multiarch_libdirs[i]);
goto out;
}
delete[i] = g_hash_table_new_full (g_str_hash, g_str_equal,
g_free, g_free);
while (TRUE)
{
g_autoptr(Elf) elf = NULL;
g_autoptr(GError) local_error = NULL;
glnx_autofd int libfd = -1;
g_autofree gchar *path = NULL;
g_autofree gchar *soname = NULL;
g_autofree gchar *target = NULL;
if (!glnx_dirfd_iterator_next_dent_ensure_dtype (&iters[i], &dent,
NULL, error))
return glnx_prefix_error (error, "Unable to iterate over \"%s/%s\"",
self->mutable_sysroot,
multiarch_libdirs[i]);
if (dent == NULL)
break;
switch (dent->d_type)
{
case DT_REG:
case DT_LNK:
break;
case DT_BLK:
case DT_CHR:
case DT_DIR:
case DT_FIFO:
case DT_SOCK:
case DT_UNKNOWN:
default:
continue;
}
if (!g_str_has_prefix (dent->d_name, "lib"))
continue;
if (!g_str_has_suffix (dent->d_name, ".so") &&
strstr (dent->d_name, ".so.") == NULL)
continue;
path = g_build_filename (multiarch_libdirs[i], dent->d_name, NULL);
/* scope for soname_link */
{
g_autofree gchar *soname_link = NULL;
soname_link = g_build_filename (arch->libdir_in_current_namespace,
dent->d_name, NULL);
/* If we found libfoo.so.1 in the container, and libfoo.so.1
* also exists among the overrides, delete it. */
if (g_file_test (soname_link, G_FILE_TEST_IS_SYMLINK))
{
g_hash_table_replace (delete[i],
g_strdup (dent->d_name),
g_steal_pointer (&soname_link));
continue;
}
}
target = glnx_readlinkat_malloc (iters[i].fd, dent->d_name,
NULL, NULL);
if (target != NULL)
{
g_autofree gchar *soname_link = NULL;
soname_link = g_build_filename (arch->libdir_in_current_namespace,
glnx_basename (target),
NULL);
/* If the symlink in the container points to
* /foo/bar/libfoo.so.1, and libfoo.so.1 also exists among
* the overrides, delete it. */
if (g_file_test (soname_link, G_FILE_TEST_IS_SYMLINK))
{
g_hash_table_replace (delete[i],
g_strdup (dent->d_name),
g_steal_pointer (&soname_link));
continue;
}
}
libfd = _srt_resolve_in_sysroot (self->mutable_sysroot_fd, path,
SRT_RESOLVE_FLAGS_READABLE, NULL,
&local_error);
if (libfd < 0)
{
g_warning ("Unable to open %s/%s for reading: %s",
self->mutable_sysroot, path, local_error->message);
g_clear_error (&local_error);
continue;
}
elf = pv_elf_open_fd (libfd, &local_error);
if (elf != NULL)
soname = pv_elf_get_soname (elf, &local_error);
if (soname == NULL)
{
g_warning ("Unable to get SONAME of %s/%s: %s",
self->mutable_sysroot, path, local_error->message);
g_clear_error (&local_error);
continue;
}
/* If we found a library with SONAME libfoo.so.1 in the
* container, and libfoo.so.1 also exists among the overrides,
* delete it. */
{
g_autofree gchar *soname_link = NULL;
soname_link = g_build_filename (arch->libdir_in_current_namespace,
soname, NULL);
if (g_file_test (soname_link, G_FILE_TEST_IS_SYMLINK))
{
g_hash_table_replace (delete[i],
g_strdup (dent->d_name),
g_steal_pointer (&soname_link));
continue;
}
}
}
}
for (i = 0; i < G_N_ELEMENTS (libdirs); i++)
{
if (delete[i] == NULL)
continue;
g_assert (iters[i].initialized);
g_assert (iters[i].fd >= 0);
GLNX_HASH_TABLE_FOREACH_KV (delete[i],
const char *, name,
const char *, reason)
{
g_autoptr(GError) local_error = NULL;
g_debug ("Deleting %s/%s/%s because %s replaces it",
self->mutable_sysroot, multiarch_libdirs[i], name, reason);
if (!glnx_unlinkat (iters[i].fd, name, 0, &local_error))
{
if (g_error_matches (local_error, G_IO_ERROR,
G_IO_ERROR_NOT_FOUND))
{
/* Ignore: probably we already deleted it from /lib,
* now we are trying to delete it from /usr/lib, and
* they are the same place. */
}
else
{
g_warning ("Unable to delete %s/%s/%s: %s",
self->mutable_sysroot, multiarch_libdirs[i],
name, local_error->message);
}
g_clear_error (&local_error);
}
}
}
ret = TRUE;
out:
for (i = 0; i < G_N_ELEMENTS (libdirs); i++)
{
g_clear_pointer (&delete[i], g_hash_table_unref);
glnx_dirfd_iterator_clear (&iters[i]);
g_free (multiarch_libdirs[i]);
}
return ret;
}
static gboolean
pv_runtime_take_ld_so_from_provider (PvRuntime *self,
RuntimeArchitecture *arch,
const gchar *ld_so_in_runtime,
FlatpakBwrap *bwrap,
GError **error)
{
glnx_autofd int path_fd = -1;
glnx_autofd int provider_fd = -1;
g_autofree gchar *ld_so_relative_to_provider = NULL;
g_autofree gchar *ld_so_in_provider = NULL;
g_debug ("Making provider's ld.so visible in container");
if (!glnx_opendirat (-1, self->provider_in_current_namespace, FALSE, &provider_fd, error))
return FALSE;
path_fd = _srt_resolve_in_sysroot (provider_fd,
arch->ld_so, SRT_RESOLVE_FLAGS_READABLE,
&ld_so_relative_to_provider, error);
if (path_fd < 0)
return glnx_throw_errno_prefix (error,
"Unable to determine provider path to %s",
arch->ld_so);
ld_so_in_provider = g_build_filename (self->provider_in_host_namespace,
ld_so_relative_to_provider, NULL);
g_debug ("Provider path: %s -> %s", arch->ld_so, ld_so_relative_to_provider);
/* Might be either absolute, or relative to the root */
g_debug ("Container path: %s -> %s", arch->ld_so, ld_so_in_runtime);
/* If we have a mutable sysroot, we can delete the interoperable path
* and replace it with a symlink to what we want.
* For example, overwrite /lib/ld-linux.so.2 with a symlink to
* /run/host/lib/i386-linux-gnu/ld-2.30.so, or similar. This avoids
* having to dereference a long chain of symlinks every time we run
* an executable. */
if (self->mutable_sysroot != NULL &&
!pv_runtime_take_from_provider (self, bwrap, ld_so_in_provider,
arch->ld_so,
TAKE_FROM_PROVIDER_FLAGS_NONE, error))
return FALSE;
/* If we don't have a mutable sysroot, we cannot replace symlinks,
* and we also cannot mount onto symlinks (they get dereferenced),
* so our only choice is to bind-mount
* /lib/i386-linux-gnu/ld-2.30.so onto
* /lib/i386-linux-gnu/ld-2.15.so and so on.
*
* In the mutable sysroot case, we don't strictly need to
* overwrite /lib/i386-linux-gnu/ld-2.15.so with a symlink to
* /run/host/lib/i386-linux-gnu/ld-2.30.so, but we might as well do
* it anyway, for extra robustness: if we ever run a ld.so that
* doesn't match the libc we are using (perhaps via an OS-specific,
* non-standard path), that's pretty much a disaster, because it will
* just crash. However, all of those (chains of) non-standard symlinks
* will end up pointing to ld_so_in_runtime. */
return pv_runtime_take_from_provider (self, bwrap, ld_so_in_provider,
ld_so_in_runtime,
TAKE_FROM_PROVIDER_FLAGS_NONE, error);
}
static gchar *
pv_runtime_search_in_path_and_bin (PvRuntime *self,
const gchar *program_name)
{
const gchar * const common_bin_dirs[] =
{
"/usr/bin",
"/bin",
"/usr/sbin",
"/sbin",
NULL
};
if (g_strcmp0 (self->host_in_current_namespace, "/") == 0)
{
gchar *found_path = g_find_program_in_path (program_name);
if (found_path != NULL)
return found_path;
}
for (gsize i = 0; i < G_N_ELEMENTS (common_bin_dirs) - 1; i++)
{
g_autofree gchar *test_path = g_build_filename (common_bin_dirs[i],
program_name,
NULL);
if (_srt_file_test_in_sysroot (self->host_in_current_namespace, -1,
test_path, G_FILE_TEST_IS_EXECUTABLE))
return g_steal_pointer (&test_path);
}
return NULL;
}
static gboolean
setup_vulkan_loadable_json (PvRuntime *self,
FlatpakBwrap *bwrap,
const gchar *sub_dir,
GPtrArray *vulkan_details,
GString *vulkan_path,
GError **error)
{
gsize i, j;
g_autofree gchar *dir_on_host = NULL;
dir_on_host = g_build_filename (self->overrides,
"share", "vulkan", sub_dir, NULL);
if (g_mkdir_with_parents (dir_on_host, 0700) != 0)
{
glnx_throw_errno_prefix (error, "Unable to create %s", dir_on_host);
return FALSE;
}
for (j = 0; j < vulkan_details->len; j++)
{
SrtVulkanLayer *layer = NULL;
SrtVulkanIcd *icd = NULL;
IcdDetails *details = g_ptr_array_index (vulkan_details, j);
gboolean need_provider_json = FALSE;
if (SRT_IS_VULKAN_LAYER (details->icd))
layer = SRT_VULKAN_LAYER (details->icd);
else if (SRT_IS_VULKAN_ICD (details->icd))
icd = SRT_VULKAN_ICD (details->icd);
else
g_return_val_if_reached (FALSE);
if (layer != NULL)
{
if (!srt_vulkan_layer_check_error (layer, NULL))
continue;
}
else
{
if (!srt_vulkan_icd_check_error (icd, NULL))
continue;
}
for (i = 0; i < G_N_ELEMENTS (multiarch_tuples) - 1; i++)
{
g_assert (i < G_N_ELEMENTS (details->kinds));
g_assert (i < G_N_ELEMENTS (details->paths_in_container));
if (details->kinds[i] == ICD_KIND_ABSOLUTE)
{
g_autofree gchar *json_on_host = NULL;
g_autofree gchar *json_in_container = NULL;
g_autofree gchar *json_base = NULL;
g_assert (details->paths_in_container[i] != NULL);
json_base = g_strdup_printf ("%" G_GSIZE_FORMAT "-%s.json",
j, multiarch_tuples[i]);
json_on_host = g_build_filename (dir_on_host, json_base, NULL);
json_in_container = g_build_filename (self->overrides_in_container,
"share", "vulkan", sub_dir,
json_base, NULL);
if (layer != NULL)
{
g_autoptr(SrtVulkanLayer) replacement = NULL;
replacement = srt_vulkan_layer_new_replace_library_path (layer,
details->paths_in_container[i]);
if (!srt_vulkan_layer_write_to_file (replacement, json_on_host, error))
return FALSE;
}
else
{
g_autoptr(SrtVulkanIcd) replacement = NULL;
replacement = srt_vulkan_icd_new_replace_library_path (icd,
details->paths_in_container[i]);
if (!srt_vulkan_icd_write_to_file (replacement, json_on_host, error))
return FALSE;
}
pv_search_path_append (vulkan_path, json_in_container);
}
else if (details->kinds[i] == ICD_KIND_SONAME)
{
need_provider_json = TRUE;
}
}
if (need_provider_json)
{
g_autofree gchar *json_in_container = NULL;
g_autofree gchar *json_base = NULL;
const char *json_on_host = NULL;
if (layer != NULL)
json_on_host = srt_vulkan_layer_get_json_path (layer);
else
json_on_host = srt_vulkan_icd_get_json_path (icd);
json_base = g_strdup_printf ("%" G_GSIZE_FORMAT ".json", j);
json_in_container = g_build_filename (self->overrides_in_container,
"share", "vulkan", sub_dir,
json_base, NULL);
if (!pv_runtime_take_from_provider (self, bwrap,
json_on_host,
json_in_container,
TAKE_FROM_PROVIDER_FLAGS_COPY_FALLBACK,
error))
return FALSE;
pv_search_path_append (vulkan_path, json_in_container);
}
}
return TRUE;
}
static gboolean
collect_vulkan_layers (PvRuntime *self,
const GPtrArray *layer_details,
RuntimeArchitecture *arch,
const gchar *dir_name,
GError **error)
{
gsize j;
for (j = 0; j < layer_details->len; j++)
{
g_autoptr(SrtLibrary) library = NULL;
SrtLibraryIssues issues;
IcdDetails *details = g_ptr_array_index (layer_details, j);
SrtVulkanLayer *layer = SRT_VULKAN_LAYER (details->icd);
if (!srt_vulkan_layer_check_error (layer, NULL))
continue;
details->resolved_library = srt_vulkan_layer_resolve_library_path (layer);
g_assert (details->resolved_library != NULL);
if (g_strcmp0 (self->provider_in_host_namespace, "/") == 0)
{
issues = srt_check_library_presence (details->resolved_library,
arch->details->tuple, NULL,
SRT_LIBRARY_SYMBOLS_FORMAT_PLAIN,
&library);
if (issues & (SRT_LIBRARY_ISSUES_CANNOT_LOAD |
SRT_LIBRARY_ISSUES_UNKNOWN |
SRT_LIBRARY_ISSUES_TIMEOUT))
{
g_debug ("Unable to load library %s: %s", details->resolved_library,
srt_library_get_messages (library));
continue;
}
g_free (details->resolved_library);
details->resolved_library = g_strdup (srt_library_get_absolute_path (library));
}
else if (strstr (details->resolved_library, "$ORIGIN/") != NULL ||
strstr (details->resolved_library, "${ORIGIN}") != NULL ||
strstr (details->resolved_library, "$LIB/") != NULL ||
strstr (details->resolved_library, "${LIB}") != NULL ||
strstr (details->resolved_library, "$PLATFORM/") != NULL ||
strstr (details->resolved_library, "${PLATFORM}") != NULL)
{
g_debug ("Cannot support ld.so special tokens, e.g. ${LIB}, when provider "
"is not the root filesystem");
continue;
}
if (!bind_icd (self, arch, j, dir_name, details, error))
return FALSE;
}
return TRUE;
}
static gboolean
pv_runtime_use_provider_graphics_stack (PvRuntime *self,
FlatpakBwrap *bwrap,
GHashTable *extra_locked_vars_to_unset,
GHashTable *extra_locked_vars_to_inherit,
GError **error)
{
gsize i, j;
g_autoptr(GString) dri_path = g_string_new ("");
g_autoptr(GString) egl_path = g_string_new ("");
g_autoptr(GString) vulkan_path = g_string_new ("");
/* We are currently using the explicit and implicit Vulkan layer paths
* only to check if we binded at least a single layer */
g_autoptr(GString) vulkan_exp_layer_path = g_string_new ("");
g_autoptr(GString) vulkan_imp_layer_path = g_string_new ("");
g_autoptr(GString) va_api_path = g_string_new ("");
gboolean any_architecture_works = FALSE;
g_autofree gchar *localedef = NULL;
g_autofree gchar *ldconfig = NULL;
g_autofree gchar *locale = NULL;
g_autofree gchar *dir_on_host = NULL;
g_autoptr(SrtSystemInfo) system_info = srt_system_info_new (NULL);
g_autoptr(SrtObjectList) egl_icds = NULL;
g_autoptr(SrtObjectList) vulkan_icds = NULL;
g_autoptr(SrtObjectList) vulkan_explicit_layers = NULL;
g_autoptr(SrtObjectList) vulkan_implicit_layers = NULL;
g_autoptr(GPtrArray) egl_icd_details = NULL; /* (element-type IcdDetails) */
g_autoptr(GPtrArray) vulkan_icd_details = NULL; /* (element-type IcdDetails) */
g_autoptr(GPtrArray) vulkan_exp_layer_details = NULL; /* (element-type IcdDetails) */
g_autoptr(GPtrArray) vulkan_imp_layer_details = NULL; /* (element-type IcdDetails) */
g_autoptr(GPtrArray) va_api_icd_details = NULL; /* (element-type IcdDetails) */
guint n_egl_icds;
guint n_vulkan_icds;
const GList *icd_iter;
gboolean all_libdrm_from_provider = TRUE;
g_autoptr(GHashTable) libdrm_data_in_provider = g_hash_table_new_full (g_str_hash,
g_str_equal,
g_free, NULL);
g_autoptr(GHashTable) gconv_in_provider = g_hash_table_new_full (g_str_hash, g_str_equal,
g_free, NULL);
g_autofree gchar *best_libdrm_data_in_provider = NULL;
GHashTableIter iter;
const gchar *gconv_path;
g_autofree gchar *provider_in_container_namespace_guarded = NULL;
if (g_str_has_suffix (self->provider_in_container_namespace, "/"))
provider_in_container_namespace_guarded =
g_strdup (self->provider_in_container_namespace);
else
provider_in_container_namespace_guarded =
g_strdup_printf ("%s/", self->provider_in_container_namespace);
g_return_val_if_fail (PV_IS_RUNTIME (self), FALSE);
g_return_val_if_fail (!pv_bwrap_was_finished (bwrap), FALSE);
g_return_val_if_fail (error == NULL || *error == NULL, FALSE);
if (!pv_runtime_provide_container_access (self, error))
return FALSE;
srt_system_info_set_sysroot (system_info, self->provider_in_current_namespace);
g_debug ("Enumerating EGL ICDs on provider system...");
egl_icds = srt_system_info_list_egl_icds (system_info, multiarch_tuples);
n_egl_icds = g_list_length (egl_icds);
egl_icd_details = g_ptr_array_new_full (n_egl_icds,
(GDestroyNotify) G_CALLBACK (icd_details_free));
for (icd_iter = egl_icds, j = 0;
icd_iter != NULL;
icd_iter = icd_iter->next, j++)
{
SrtEglIcd *icd = icd_iter->data;
const gchar *path = srt_egl_icd_get_json_path (icd);
GError *local_error = NULL;
if (!srt_egl_icd_check_error (icd, &local_error))
{
g_debug ("Failed to load EGL ICD #%" G_GSIZE_FORMAT " from %s: %s",
j, path, local_error->message);
g_clear_error (&local_error);
continue;
}
g_debug ("EGL ICD #%" G_GSIZE_FORMAT " at %s: %s",
j, path, srt_egl_icd_get_library_path (icd));
g_ptr_array_add (egl_icd_details, icd_details_new (icd));
}
g_debug ("Enumerating Vulkan ICDs on provider system...");
vulkan_icds = srt_system_info_list_vulkan_icds (system_info,
multiarch_tuples);
n_vulkan_icds = g_list_length (vulkan_icds);
vulkan_icd_details = g_ptr_array_new_full (n_vulkan_icds,
(GDestroyNotify) G_CALLBACK (icd_details_free));
for (icd_iter = vulkan_icds, j = 0;
icd_iter != NULL;
icd_iter = icd_iter->next, j++)
{
SrtVulkanIcd *icd = icd_iter->data;
const gchar *path = srt_vulkan_icd_get_json_path (icd);
GError *local_error = NULL;
if (!srt_vulkan_icd_check_error (icd, &local_error))
{
g_debug ("Failed to load Vulkan ICD #%" G_GSIZE_FORMAT " from %s: %s",
j, path, local_error->message);
g_clear_error (&local_error);
continue;
}
g_debug ("Vulkan ICD #%" G_GSIZE_FORMAT " at %s: %s",
j, path, srt_vulkan_icd_get_library_path (icd));
g_ptr_array_add (vulkan_icd_details, icd_details_new (icd));
}
g_debug ("Enumerating Vulkan explicit layers on provider system...");
vulkan_explicit_layers = srt_system_info_list_explicit_vulkan_layers (system_info);
vulkan_exp_layer_details = g_ptr_array_new_full (g_list_length (vulkan_explicit_layers),
(GDestroyNotify) G_CALLBACK (icd_details_free));
for (icd_iter = vulkan_explicit_layers, j = 0;
icd_iter != NULL;
icd_iter = icd_iter->next, j++)
{
SrtVulkanLayer *layer = icd_iter->data;
const gchar *path = srt_vulkan_layer_get_json_path (layer);
GError *local_error = NULL;
if (!srt_vulkan_layer_check_error (layer, &local_error))
{
g_debug ("Failed to load Vulkan Layer #%" G_GSIZE_FORMAT " from %s: %s",
j, path, local_error->message);
g_clear_error (&local_error);
continue;
}
g_debug ("Vulkan explicit layer #%" G_GSIZE_FORMAT " at %s: %s",
j, path, srt_vulkan_layer_get_library_path (layer));
g_ptr_array_add (vulkan_exp_layer_details, icd_details_new (layer));
}
g_debug ("Enumerating Vulkan implicit layers on provider system...");
vulkan_implicit_layers = srt_system_info_list_implicit_vulkan_layers (system_info);
vulkan_imp_layer_details = g_ptr_array_new_full (g_list_length (vulkan_implicit_layers),
(GDestroyNotify) G_CALLBACK (icd_details_free));
for (icd_iter = vulkan_implicit_layers, j = 0;
icd_iter != NULL;
icd_iter = icd_iter->next, j++)
{
SrtVulkanLayer *layer = icd_iter->data;
const gchar *path = srt_vulkan_layer_get_json_path (layer);
GError *local_error = NULL;
if (!srt_vulkan_layer_check_error (layer, &local_error))
{
g_debug ("Failed to load Vulkan Layer #%" G_GSIZE_FORMAT " from %s: %s",
j, path, local_error->message);
g_clear_error (&local_error);
continue;
}
g_debug ("Vulkan implicit layer #%" G_GSIZE_FORMAT " at %s: %s",
j, path, srt_vulkan_layer_get_library_path (layer));
g_ptr_array_add (vulkan_imp_layer_details, icd_details_new (layer));
}
/* We set this FALSE later if we decide not to use the provider libc
* for some architecture. */
self->all_libc_from_provider = TRUE;
g_assert (multiarch_tuples[G_N_ELEMENTS (multiarch_tuples) - 1] == NULL);
for (i = 0; i < G_N_ELEMENTS (multiarch_tuples) - 1; i++)
{
g_auto (RuntimeArchitecture) arch_on_stack = { i };
RuntimeArchitecture *arch = &arch_on_stack;
g_debug ("Checking for %s libraries...", multiarch_tuples[i]);
if (runtime_architecture_init (arch, self))
{
g_autoptr(GPtrArray) dirs = NULL;
g_autoptr(FlatpakBwrap) temp_bwrap = NULL;
g_autofree gchar *this_dri_path_on_host = g_build_filename (arch->libdir_in_current_namespace,
"dri", NULL);
g_autofree gchar *this_dri_path_in_container = g_build_filename (arch->libdir_in_container,
"dri", NULL);
g_autofree gchar *libc = NULL;
/* Can either be relative to the sysroot, or absolute */
g_autofree gchar *ld_so_in_runtime = NULL;
g_autofree gchar *libdrm = NULL;
g_autoptr(SrtObjectList) vdpau_drivers = NULL;
g_autoptr(SrtObjectList) va_api_drivers = NULL;
if (self->mutable_sysroot != NULL)
{
glnx_autofd int fd = -1;
fd = _srt_resolve_in_sysroot (self->mutable_sysroot_fd,
arch->ld_so,
SRT_RESOLVE_FLAGS_NONE,
&ld_so_in_runtime,
error);
if (fd < 0)
return FALSE;
}
else
{
g_autofree gchar *etc = NULL;
g_autofree gchar *provider_etc = NULL;
g_autofree gchar *provider_etc_dest = NULL;
/* Do it the hard way, by asking a process running in the
* container (or at least a container resembling the one we
* are going to use) to resolve it for us */
temp_bwrap = flatpak_bwrap_new (NULL);
flatpak_bwrap_add_args (temp_bwrap,
self->bubblewrap,
NULL);
if (!pv_bwrap_bind_usr (temp_bwrap,
self->runtime_files_on_host,
self->runtime_files,
"/",
error))
return FALSE;
etc = g_build_filename (self->runtime_files_on_host,
"etc", NULL);
flatpak_bwrap_add_args (temp_bwrap,
"--ro-bind",
etc,
"/etc",
NULL);
if (!pv_bwrap_bind_usr (temp_bwrap,
self->provider_in_host_namespace,
self->provider_in_current_namespace,
self->provider_in_container_namespace,
error))
return FALSE;
provider_etc = g_build_filename (self->provider_in_host_namespace,
"etc", NULL);
provider_etc_dest = g_build_filename (self->provider_in_container_namespace,
"etc", NULL);
flatpak_bwrap_add_args (temp_bwrap,
"--ro-bind",
provider_etc,
provider_etc_dest,
NULL);
flatpak_bwrap_add_args (temp_bwrap,
"env", "PATH=/usr/bin:/bin",
"readlink", "-e", arch->ld_so,
NULL);
flatpak_bwrap_finish (temp_bwrap);
ld_so_in_runtime = pv_capture_output (
(const char * const *) temp_bwrap->argv->pdata, NULL);
g_clear_pointer (&temp_bwrap, flatpak_bwrap_free);
}
if (ld_so_in_runtime == NULL)
{
g_debug ("Container does not have %s so it cannot run "
"%s binaries",
arch->ld_so, arch->details->tuple);
continue;
}
any_architecture_works = TRUE;
g_debug ("Container path: %s -> %s",
arch->ld_so, ld_so_in_runtime);
pv_search_path_append (dri_path, this_dri_path_in_container);
g_mkdir_with_parents (arch->libdir_in_current_namespace, 0755);
g_mkdir_with_parents (this_dri_path_on_host, 0755);
g_debug ("Collecting graphics drivers from provider system...");
temp_bwrap = pv_runtime_get_capsule_capture_libs (self, arch);
flatpak_bwrap_add_args (temp_bwrap,
"--dest", arch->libdir_in_current_namespace,
/* Mesa GLX, etc. */
"gl:",
/* Vulkan */
"if-exists:if-same-abi:soname:libvulkan.so.1",
/* VDPAU */
"if-exists:if-same-abi:soname:libvdpau.so.1",
/* VA-API */
"if-exists:if-same-abi:soname:libva.so.1",
"if-exists:if-same-abi:soname:libva-drm.so.1",
"if-exists:if-same-abi:soname:libva-glx.so.1",
"if-exists:if-same-abi:soname:libva-x11.so.1",
"if-exists:if-same-abi:soname:libva.so.2",
"if-exists:if-same-abi:soname:libva-drm.so.2",
"if-exists:if-same-abi:soname:libva-glx.so.2",
"if-exists:if-same-abi:soname:libva-x11.so.2",
/* NVIDIA proprietary stack */
"if-exists:even-if-older:soname-match:libEGL.so.*",
"if-exists:even-if-older:soname-match:libEGL_nvidia.so.*",
"if-exists:even-if-older:soname-match:libGL.so.*",
"if-exists:even-if-older:soname-match:libGLESv1_CM.so.*",
"if-exists:even-if-older:soname-match:libGLESv1_CM_nvidia.so.*",
"if-exists:even-if-older:soname-match:libGLESv2.so.*",
"if-exists:even-if-older:soname-match:libGLESv2_nvidia.so.*",
"if-exists:even-if-older:soname-match:libGLX.so.*",
"if-exists:even-if-older:soname-match:libGLX_nvidia.so.*",
"if-exists:even-if-older:soname-match:libGLX_indirect.so.*",
"if-exists:even-if-older:soname-match:libGLdispatch.so.*",
"if-exists:even-if-older:soname-match:libOpenGL.so.*",
"if-exists:even-if-older:soname-match:libcuda.so.*",
"if-exists:even-if-older:soname-match:libglx.so.*",
"if-exists:even-if-older:soname-match:libnvidia-cbl.so.*",
"if-exists:even-if-older:soname-match:libnvidia-cfg.so.*",
"if-exists:even-if-older:soname-match:libnvidia-compiler.so.*",
"if-exists:even-if-older:soname-match:libnvidia-egl-wayland.so.*",
"if-exists:even-if-older:soname-match:libnvidia-eglcore.so.*",
"if-exists:even-if-older:soname-match:libnvidia-encode.so.*",
"if-exists:even-if-older:soname-match:libnvidia-fatbinaryloader.so.*",
"if-exists:even-if-older:soname-match:libnvidia-fbc.so.*",
"if-exists:even-if-older:soname-match:libnvidia-glcore.so.*",
"if-exists:even-if-older:soname-match:libnvidia-glsi.so.*",
"if-exists:even-if-older:soname-match:libnvidia-glvkspirv.so.*",
"if-exists:even-if-older:soname-match:libnvidia-ifr.so.*",
"if-exists:even-if-older:soname-match:libnvidia-ml.so.*",
"if-exists:even-if-older:soname-match:libnvidia-opencl.so.*",
"if-exists:even-if-older:soname-match:libnvidia-opticalflow.so.*",
"if-exists:even-if-older:soname-match:libnvidia-ptxjitcompiler.so.*",
"if-exists:even-if-older:soname-match:libnvidia-rtcore.so.*",
"if-exists:even-if-older:soname-match:libnvidia-tls.so.*",
"if-exists:even-if-older:soname-match:libOpenCL.so.*",
"if-exists:even-if-older:soname-match:libvdpau_nvidia.so.*",
NULL);
flatpak_bwrap_finish (temp_bwrap);
if (!pv_bwrap_run_sync (temp_bwrap, NULL, error))
return FALSE;
g_clear_pointer (&temp_bwrap, flatpak_bwrap_free);
g_debug ("Collecting %s EGL drivers from host system...",
arch->details->tuple);
for (j = 0; j < egl_icd_details->len; j++)
{
IcdDetails *details = g_ptr_array_index (egl_icd_details, j);
SrtEglIcd *icd = SRT_EGL_ICD (details->icd);
if (!srt_egl_icd_check_error (icd, NULL))
continue;
details->resolved_library = srt_egl_icd_resolve_library_path (icd);
g_assert (details->resolved_library != NULL);
if (!bind_icd (self, arch, j, "glvnd", details, error))
return FALSE;
}
g_debug ("Collecting %s Vulkan drivers from host system...",
arch->details->tuple);
for (j = 0; j < vulkan_icd_details->len; j++)
{
IcdDetails *details = g_ptr_array_index (vulkan_icd_details, j);
SrtVulkanIcd *icd = SRT_VULKAN_ICD (details->icd);
if (!srt_vulkan_icd_check_error (icd, NULL))
continue;
details->resolved_library = srt_vulkan_icd_resolve_library_path (icd);
g_assert (details->resolved_library != NULL);
if (!bind_icd (self, arch, j, "vulkan", details, error))
return FALSE;
}
g_debug ("Collecting Vulkan explicit layers from host system...");
if (!collect_vulkan_layers (self, vulkan_exp_layer_details, arch,
"vulkan_exp_layer", error))
return FALSE;
g_debug ("Collecting Vulkan implicit layers from host system...");
if (!collect_vulkan_layers (self, vulkan_imp_layer_details, arch,
"vulkan_imp_layer", error))
return FALSE;
g_debug ("Enumerating %s VDPAU ICDs on host system...", arch->details->tuple);
vdpau_drivers = srt_system_info_list_vdpau_drivers (system_info,
arch->details->tuple,
SRT_DRIVER_FLAGS_NONE);
for (icd_iter = vdpau_drivers; icd_iter != NULL; icd_iter = icd_iter->next)
{
g_autoptr(IcdDetails) details = icd_details_new (icd_iter->data);
details->resolved_library = srt_vdpau_driver_resolve_library_path (details->icd);
g_assert (details->resolved_library != NULL);
g_assert (g_path_is_absolute (details->resolved_library));
/* We avoid using the sequence number for VDPAU because they can only
* be located in a single directory, so by definition we can't have
* collisions */
if (!bind_icd (self, arch, G_MAXSIZE, "vdpau", details, error))
return FALSE;
}
g_debug ("Enumerating %s VA-API drivers on host system...",
arch->details->tuple);
va_api_drivers = srt_system_info_list_va_api_drivers (system_info,
arch->details->tuple,
SRT_DRIVER_FLAGS_NONE);
/* Guess that there will be about the same number of VA-API ICDs
* for each word size. This only needs to be approximately right:
* g_ptr_array_add() will resize the allocated buffer if needed. */
if (va_api_icd_details == NULL)
va_api_icd_details = g_ptr_array_new_full (g_list_length (va_api_drivers) * (G_N_ELEMENTS (multiarch_tuples) - 1),
(GDestroyNotify) G_CALLBACK (icd_details_free));
for (icd_iter = va_api_drivers, j = 0; icd_iter != NULL; icd_iter = icd_iter->next, j++)
{
g_autoptr(IcdDetails) details = icd_details_new (icd_iter->data);
details->resolved_library = srt_va_api_driver_resolve_library_path (details->icd);
g_assert (details->resolved_library != NULL);
g_assert (g_path_is_absolute (details->resolved_library));
if (!bind_icd (self, arch, j, "dri", details, error))
return FALSE;
g_ptr_array_add (va_api_icd_details, g_steal_pointer (&details));
}
if (self->mutable_sysroot != NULL &&
!pv_runtime_remove_overridden_libraries (self, arch, error))
return FALSE;
libc = g_build_filename (arch->libdir_in_current_namespace, "libc.so.6", NULL);
/* If we are going to use the provider's libc6 (likely)
* then we have to use its ld.so too. */
if (g_file_test (libc, G_FILE_TEST_IS_SYMLINK))
{
g_autofree char *libc_target = NULL;
if (!pv_runtime_take_ld_so_from_provider (self, arch,
ld_so_in_runtime,
bwrap, error))
return FALSE;
/* Collect miscellaneous libraries that libc might dlopen. */
g_assert (temp_bwrap == NULL);
temp_bwrap = pv_runtime_get_capsule_capture_libs (self, arch);
flatpak_bwrap_add_args (temp_bwrap,
"--dest", arch->libdir_in_current_namespace,
"if-exists:libidn2.so.0",
"if-exists:even-if-older:soname-match:libnss_compat.so.*",
"if-exists:even-if-older:soname-match:libnss_db.so.*",
"if-exists:even-if-older:soname-match:libnss_dns.so.*",
"if-exists:even-if-older:soname-match:libnss_files.so.*",
NULL);
flatpak_bwrap_finish (temp_bwrap);
if (!pv_bwrap_run_sync (temp_bwrap, NULL, error))
return FALSE;
g_clear_pointer (&temp_bwrap, flatpak_bwrap_free);
libc_target = glnx_readlinkat_malloc (-1, libc, NULL, NULL);
if (libc_target != NULL)
{
g_autofree gchar *dir = NULL;
g_autofree gchar *gconv_dir_in_provider = NULL;
gboolean found = FALSE;
dir = g_path_get_dirname (libc_target);
if (g_str_has_prefix (dir, provider_in_container_namespace_guarded))
memmove (dir,
dir + strlen (self->provider_in_container_namespace),
strlen (dir) - strlen (self->provider_in_container_namespace) + 1);
/* We are assuming that in the glibc "Makeconfig", $(libdir) was the same as
* $(slibdir) (this is the upstream default) or the same as "/usr$(slibdir)"
* (like in Debian without the mergerd /usr). We also assume that $(gconvdir)
* had its default value "$(libdir)/gconv".
* We check /usr first because otherwise, if the host is merged-/usr and the
* container is not, we might end up binding /lib instead of /usr/lib
* and that could cause issues. */
if (g_str_has_prefix (dir, "/usr/"))
memmove (dir, dir + strlen ("/usr"), strlen (dir) - strlen ("/usr") + 1);
gconv_dir_in_provider = g_build_filename ("/usr", dir, "gconv", NULL);
if (_srt_file_test_in_sysroot (self->provider_in_current_namespace,
-1,
gconv_dir_in_provider,
G_FILE_TEST_IS_DIR))
{
g_hash_table_add (gconv_in_provider, g_steal_pointer (&gconv_dir_in_provider));
found = TRUE;
}
if (!found)
{
/* Try again without hwcaps subdirectories.
* For example, libc6-i386 on SteamOS 2 'brewmaster'
* contains /lib/i386-linux-gnu/i686/cmov/libc.so.6,
* for which we want gconv modules from
* /usr/lib/i386-linux-gnu/gconv, not from
* /usr/lib/i386-linux-gnu/i686/cmov/gconv. */
while (g_str_has_suffix (dir, "/cmov") ||
g_str_has_suffix (dir, "/i686") ||
g_str_has_suffix (dir, "/sse2") ||
g_str_has_suffix (dir, "/tls") ||
g_str_has_suffix (dir, "/x86_64"))
{
char *slash = strrchr (dir, '/');
g_assert (slash != NULL);
*slash = '\0';
}
g_clear_pointer (&gconv_dir_in_provider, g_free);
gconv_dir_in_provider = g_build_filename ("/usr", dir, "gconv", NULL);
if (_srt_file_test_in_sysroot (self->provider_in_current_namespace,
-1,
gconv_dir_in_provider,
G_FILE_TEST_IS_DIR))
{
g_hash_table_add (gconv_in_provider, g_steal_pointer (&gconv_dir_in_provider));
found = TRUE;
}
}
if (!found)
{
g_debug ("We were expecting to have the gconv modules directory in the "
"provider to be located in \"%s/gconv\", but instead it is missing",
dir);
}
}
self->any_libc_from_provider = TRUE;
}
else
{
self->all_libc_from_provider = FALSE;
}
libdrm = g_build_filename (arch->libdir_in_current_namespace, "libdrm.so.2", NULL);
/* If we have libdrm.so.2 in overrides we also want to mount
* ${prefix}/share/libdrm from the host. ${prefix} is derived from
* the absolute path of libdrm.so.2 */
if (g_file_test (libdrm, G_FILE_TEST_IS_SYMLINK))
{
g_autofree char *target = NULL;
target = glnx_readlinkat_malloc (-1, libdrm, NULL, NULL);
if (target != NULL)
{
g_autofree gchar *dir = NULL;
g_autofree gchar *lib_multiarch = NULL;
g_autofree gchar *libdrm_dir_in_provider = NULL;
dir = g_path_get_dirname (target);
lib_multiarch = g_build_filename ("/lib", arch->details->tuple, NULL);
if (g_str_has_suffix (dir, lib_multiarch))
dir[strlen (dir) - strlen (lib_multiarch)] = '\0';
else if (g_str_has_suffix (dir, "/lib64"))
dir[strlen (dir) - strlen ("/lib64")] = '\0';
else if (g_str_has_suffix (dir, "/lib32"))
dir[strlen (dir) - strlen ("/lib32")] = '\0';
else if (g_str_has_suffix (dir, "/lib"))
dir[strlen (dir) - strlen ("/lib")] = '\0';
if (g_str_has_prefix (dir, provider_in_container_namespace_guarded))
memmove (dir,
dir + strlen (self->provider_in_container_namespace),
strlen (dir) - strlen (self->provider_in_container_namespace) + 1);
libdrm_dir_in_provider = g_build_filename (dir, "share", "libdrm", NULL);
if (_srt_file_test_in_sysroot (self->provider_in_current_namespace,
-1,
libdrm_dir_in_provider,
G_FILE_TEST_IS_DIR))
{
g_hash_table_add (libdrm_data_in_provider,
g_steal_pointer (&libdrm_dir_in_provider));
}
else
{
g_debug ("We were expecting to have the libdrm directory "
"in the provider to be located in "
"\"%s/share/libdrm\", but instead it is missing",
dir);
}
}
}
else
{
/* For at least a single architecture, libdrm is newer in the container */
all_libdrm_from_provider = FALSE;
}
/* Order matters: drivers from a later entry will overwrite
* drivers from an earlier entry. Because we don't know whether
* /lib and /usr/lib are 32- or 64-bit, we need to prioritize
* libQUAL higher. Prioritize Debian-style multiarch higher
* still, because it's completely unambiguous. */
dirs = g_ptr_array_new_with_free_func (g_free);
g_ptr_array_add (dirs, g_strdup ("/lib"));
g_ptr_array_add (dirs, g_strdup ("/usr/lib"));
for (j = 0; j < G_N_ELEMENTS (arch->details->multilib); j++)
{
if (arch->details->multilib[j] == NULL)
break;
g_ptr_array_add (dirs,
g_build_filename ("/", arch->details->multilib[j], NULL));
g_ptr_array_add (dirs,
g_build_filename ("/usr", arch->details->multilib[j], NULL));
}
g_ptr_array_add (dirs,
g_build_filename ("/lib", arch->details->tuple, NULL));
g_ptr_array_add (dirs,
g_build_filename ("/usr", "lib", arch->details->tuple, NULL));
for (j = 0; j < dirs->len; j++)
{
if (!try_bind_dri (self, arch, bwrap, g_ptr_array_index (dirs, j), error))
return FALSE;
}
}
}
if (!any_architecture_works)
{
GString *archs = g_string_new ("");
g_assert (multiarch_tuples[G_N_ELEMENTS (multiarch_tuples) - 1] == NULL);
for (i = 0; i < G_N_ELEMENTS (multiarch_tuples) - 1; i++)
{
if (archs->len > 0)
g_string_append (archs, ", ");
g_string_append (archs, multiarch_tuples[i]);
}
g_set_error (error, G_IO_ERROR, G_IO_ERROR_FAILED,
"None of the supported CPU architectures are common to "
"the host system and the container (tried: %s)",
archs->str);
g_string_free (archs, TRUE);
return FALSE;
}
if (self->any_libc_from_provider && !self->all_libc_from_provider)
{
/*
* This shouldn't happen. It would mean that there exist at least
* two architectures (let's say aaa and bbb) for which we have:
* provider libc6:aaa < container libc6 < provider libc6:bbb
* (we know that the container's libc6:aaa and libc6:bbb are
* constrained to be the same version because that's how multiarch
* works).
*
* If the provider system locales work OK with both the aaa and bbb
* versions, let's assume they will also work with the intermediate
* version from the container...
*/
g_warning ("Using glibc from provider system for some but not all "
"architectures! Arbitrarily using provider locales.");
}
if (self->any_libc_from_provider)
{
g_debug ("Making provider locale data visible in container");
if (!pv_runtime_take_from_provider (self, bwrap,
"/usr/lib/locale",
"/usr/lib/locale",
TAKE_FROM_PROVIDER_FLAGS_IF_EXISTS,
error))
return FALSE;
if (!pv_runtime_take_from_provider (self, bwrap,
"/usr/share/i18n",
"/usr/share/i18n",
TAKE_FROM_PROVIDER_FLAGS_IF_EXISTS,
error))
return FALSE;
localedef = pv_runtime_search_in_path_and_bin (self, "localedef");
if (localedef == NULL)
{
g_warning ("Cannot find localedef");
}
else if (!pv_runtime_take_from_provider (self, bwrap, localedef,
"/usr/bin/localedef",
TAKE_FROM_PROVIDER_FLAGS_IF_CONTAINER_COMPATIBLE,
error))
{
return FALSE;
}
locale = pv_runtime_search_in_path_and_bin (self, "locale");
if (locale == NULL)
{
g_warning ("Cannot find locale");
}
else if (!pv_runtime_take_from_provider (self, bwrap, locale,
"/usr/bin/locale",
TAKE_FROM_PROVIDER_FLAGS_IF_CONTAINER_COMPATIBLE,
error))
{
return FALSE;
}
ldconfig = pv_runtime_search_in_path_and_bin (self, "ldconfig");
if (ldconfig == NULL)
{
g_warning ("Cannot find ldconfig");
}
else if (!pv_runtime_take_from_provider (self, bwrap,
ldconfig,
"/sbin/ldconfig",
TAKE_FROM_PROVIDER_FLAGS_NONE,
error))
{
return FALSE;
}
g_debug ("Making provider gconv modules visible in container");
g_hash_table_iter_init (&iter, gconv_in_provider);
while (g_hash_table_iter_next (&iter, (gpointer *)&gconv_path, NULL))
{
if (!pv_runtime_take_from_provider (self, bwrap,
gconv_path,
gconv_path,
TAKE_FROM_PROVIDER_FLAGS_IF_DIR,
error))
return FALSE;
}
}
else
{
g_debug ("Using included locale data from container");
g_debug ("Using included gconv modules from container");
}
if (g_hash_table_size (libdrm_data_in_provider) > 0 && !all_libdrm_from_provider)
{
/* See the explanation in the similar
* "any_libc_from_provider && !all_libc_from_provider" case, above */
g_warning ("Using libdrm.so.2 from provider system for some but not all "
"architectures! Will take /usr/share/libdrm from provider.");
}
if (g_hash_table_size (libdrm_data_in_provider) == 1)
{
best_libdrm_data_in_provider = g_strdup (
pv_hash_table_get_arbitrary_key (libdrm_data_in_provider));
}
else if (g_hash_table_size (libdrm_data_in_provider) > 1)
{
g_warning ("Found more than one possible libdrm data directory from provider");
/* Prioritize "/usr/share/libdrm" if available. Otherwise randomly pick
* the first directory in the hash table */
if (g_hash_table_contains (libdrm_data_in_provider, "/usr/share/libdrm"))
best_libdrm_data_in_provider = g_strdup ("/usr/share/libdrm");
else
best_libdrm_data_in_provider = g_strdup (
pv_hash_table_get_arbitrary_key (libdrm_data_in_provider));
}
if (best_libdrm_data_in_provider != NULL)
{
if (!pv_runtime_take_from_provider (self, bwrap,
best_libdrm_data_in_provider,
"/usr/share/libdrm",
TAKE_FROM_PROVIDER_FLAGS_IF_CONTAINER_COMPATIBLE,
error))
return FALSE;
}
g_debug ("Setting up EGL ICD JSON...");
dir_on_host = g_build_filename (self->overrides,
"share", "glvnd", "egl_vendor.d", NULL);
if (g_mkdir_with_parents (dir_on_host, 0700) != 0)
{
glnx_throw_errno_prefix (error, "Unable to create %s", dir_on_host);
return FALSE;
}
for (j = 0; j < egl_icd_details->len; j++)
{
IcdDetails *details = g_ptr_array_index (egl_icd_details, j);
SrtEglIcd *icd = SRT_EGL_ICD (details->icd);
gboolean need_provider_json = FALSE;
if (!srt_egl_icd_check_error (icd, NULL))
continue;
for (i = 0; i < G_N_ELEMENTS (multiarch_tuples) - 1; i++)
{
g_assert (i < G_N_ELEMENTS (details->kinds));
g_assert (i < G_N_ELEMENTS (details->paths_in_container));
if (details->kinds[i] == ICD_KIND_ABSOLUTE)
{
g_autoptr(SrtEglIcd) replacement = NULL;
g_autofree gchar *json_on_host = NULL;
g_autofree gchar *json_in_container = NULL;
g_autofree gchar *json_base = NULL;
g_assert (details->paths_in_container[i] != NULL);
json_base = g_strdup_printf ("%" G_GSIZE_FORMAT "-%s.json",
j, multiarch_tuples[i]);
json_on_host = g_build_filename (dir_on_host, json_base, NULL);
json_in_container = g_build_filename (self->overrides_in_container,
"share", "glvnd",
"egl_vendor.d",
json_base, NULL);
replacement = srt_egl_icd_new_replace_library_path (icd,
details->paths_in_container[i]);
if (!srt_egl_icd_write_to_file (replacement, json_on_host,
error))
return FALSE;
pv_search_path_append (egl_path, json_in_container);
}
else if (details->kinds[i] == ICD_KIND_SONAME)
{
need_provider_json = TRUE;
}
}
if (need_provider_json)
{
g_autofree gchar *json_in_container = NULL;
g_autofree gchar *json_base = NULL;
const char *json_on_host = srt_egl_icd_get_json_path (icd);
json_base = g_strdup_printf ("%" G_GSIZE_FORMAT ".json", j);
json_in_container = g_build_filename (self->overrides_in_container,
"share", "glvnd",
"egl_vendor.d",
json_base, NULL);
if (!pv_runtime_take_from_provider (self, bwrap,
json_on_host,
json_in_container,
TAKE_FROM_PROVIDER_FLAGS_COPY_FALLBACK,
error))
return FALSE;
pv_search_path_append (egl_path, json_in_container);
}
}
g_debug ("Setting up Vulkan ICD JSON...");
if (!setup_vulkan_loadable_json (self, bwrap, "icd.d", vulkan_icd_details,
vulkan_path, error))
return FALSE;
g_debug ("Setting up Vulkan explicit layer JSON...");
if (!setup_vulkan_loadable_json (self, bwrap, "explicit_layer.d",
vulkan_exp_layer_details,
vulkan_exp_layer_path, error))
return FALSE;
g_debug ("Setting up Vulkan implicit layer JSON...");
if (!setup_vulkan_loadable_json (self, bwrap, "implicit_layer.d",
vulkan_imp_layer_details,
vulkan_imp_layer_path, error))
return FALSE;
for (j = 0; j < va_api_icd_details->len; j++)
{
IcdDetails *details = g_ptr_array_index (va_api_icd_details, j);
for (i = 0; i < G_N_ELEMENTS (multiarch_tuples) - 1; i++)
{
g_assert (i < G_N_ELEMENTS (details->kinds));
g_assert (i < G_N_ELEMENTS (details->paths_in_container));
if (details->kinds[i] == ICD_KIND_NONEXISTENT)
{
continue;
}
else
{
g_autofree gchar *parent = NULL;
g_assert (details->kinds[i] == ICD_KIND_ABSOLUTE);
parent = g_path_get_dirname (details->paths_in_container[i]);
pv_search_path_append (va_api_path, parent);
}
}
}
if (dri_path->len != 0)
flatpak_bwrap_set_env (bwrap, "LIBGL_DRIVERS_PATH", dri_path->str, TRUE);
else
g_hash_table_add (extra_locked_vars_to_unset, g_strdup ("LIBGL_DRIVERS_PATH"));
if (egl_path->len != 0)
flatpak_bwrap_set_env (bwrap, "__EGL_VENDOR_LIBRARY_FILENAMES", egl_path->str, TRUE);
else
g_hash_table_add (extra_locked_vars_to_unset, g_strdup ("__EGL_VENDOR_LIBRARY_FILENAMES"));
g_hash_table_add (extra_locked_vars_to_unset, g_strdup ("__EGL_VENDOR_LIBRARY_DIRS"));
if (vulkan_path->len != 0)
flatpak_bwrap_set_env (bwrap, "VK_ICD_FILENAMES", vulkan_path->str, TRUE);
else
g_hash_table_add (extra_locked_vars_to_unset, g_strdup ("VK_ICD_FILENAMES"));
/* Implicit layers are not affected by "VK_LAYER_PATH". So instead of using
* this environment variable, we prepend our "/overrides/share" to
* "XDG_DATA_DIRS" to cover any explicit and implicit layers that we may
* have. */
if (vulkan_exp_layer_path->len != 0 || vulkan_imp_layer_path->len != 0)
{
const gchar *xdg_data_dirs;
g_autofree gchar *prepended_data_dirs = NULL;
g_autofree gchar *override_share = NULL;
xdg_data_dirs = g_environ_getenv (self->original_environ, "XDG_DATA_DIRS");
override_share = g_build_filename (self->overrides_in_container, "share", NULL);
if (xdg_data_dirs != NULL)
prepended_data_dirs = g_strdup_printf ("%s:%s", override_share, xdg_data_dirs);
else
prepended_data_dirs = g_steal_pointer (&override_share);
flatpak_bwrap_set_env (bwrap, "XDG_DATA_DIRS", prepended_data_dirs, TRUE);
}
g_hash_table_add (extra_locked_vars_to_unset, g_strdup ("VK_LAYER_PATH"));
if (va_api_path->len != 0)
flatpak_bwrap_set_env (bwrap, "LIBVA_DRIVERS_PATH", va_api_path->str, TRUE);
else
g_hash_table_add (extra_locked_vars_to_unset, g_strdup ("LIBVA_DRIVERS_PATH"));
/* We binded the VDPAU drivers in "%{libdir}/vdpau".
* Unfortunately VDPAU_DRIVER_PATH can hold just a single path, so we can't
* easily list both x86_64 and i386 drivers path.
* As a workaround we set VDPAU_DRIVER_PATH to
* "/overrides/lib/${PLATFORM}-linux-gnu/vdpau". And because we can't control
* the ${PLATFORM} placeholder value we also create symlinks from `i486`, up
* to `i686`, to the library directory `i386` that we expect to have
* already. */
g_autofree gchar *vdpau_val = g_strdup_printf ("%s/lib/${PLATFORM}-linux-gnu/vdpau",
self->overrides_in_container);
flatpak_bwrap_set_env (bwrap, "VDPAU_DRIVER_PATH", vdpau_val, TRUE);
static const char * const extra_multiarch_tuples[] =
{
"i486-linux-gnu",
"i586-linux-gnu",
"i686-linux-gnu",
NULL
};
g_autofree gchar *i386_libdir_in_current_namespace = g_build_filename (self->overrides,
"lib",
"i386-linux-gnu",
NULL);
for (i = 0; i < G_N_ELEMENTS (extra_multiarch_tuples) - 1; i++)
{
g_autofree gchar *extra_libdir_in_current_namespace = g_build_filename (self->overrides,
"lib",
extra_multiarch_tuples[i],
NULL);
if (!g_file_test (extra_libdir_in_current_namespace, G_FILE_TEST_EXISTS) &&
g_file_test (i386_libdir_in_current_namespace, G_FILE_TEST_IS_DIR))
{
g_unlink (extra_libdir_in_current_namespace);
if (symlink ("i386-linux-gnu", extra_libdir_in_current_namespace) != 0)
return glnx_throw_errno_prefix (error,
"Unable to create symlink %s -> i386-linux-gnu",
extra_libdir_in_current_namespace);
}
}
return TRUE;
}
gboolean
pv_runtime_bind (PvRuntime *self,
FlatpakBwrap *bwrap,
GHashTable *extra_locked_vars_to_unset,
GHashTable *extra_locked_vars_to_inherit,
GError **error)
{
g_autofree gchar *pressure_vessel_prefix = NULL;
g_return_val_if_fail (PV_IS_RUNTIME (self), FALSE);
g_return_val_if_fail (!pv_bwrap_was_finished (bwrap), FALSE);
g_return_val_if_fail (extra_locked_vars_to_unset != NULL, FALSE);
g_return_val_if_fail (extra_locked_vars_to_inherit != NULL, FALSE);
g_return_val_if_fail (error == NULL || *error == NULL, FALSE);
if (!bind_runtime (self, bwrap, extra_locked_vars_to_unset,
extra_locked_vars_to_inherit, error))
return FALSE;
pressure_vessel_prefix = g_path_get_dirname (self->tools_dir);
/* Make sure pressure-vessel itself is visible there. */
if (self->mutable_sysroot != NULL)
{
g_autofree gchar *dest = NULL;
glnx_autofd int parent_dirfd = -1;
parent_dirfd = _srt_resolve_in_sysroot (self->mutable_sysroot_fd,
"/usr/lib/pressure-vessel",
SRT_RESOLVE_FLAGS_MKDIR_P,
NULL, error);
if (parent_dirfd < 0)
return FALSE;
if (!glnx_shutil_rm_rf_at (parent_dirfd, "from-host", NULL, error))
return FALSE;
dest = glnx_fdrel_abspath (parent_dirfd, "from-host");
if (!pv_cheap_tree_copy (pressure_vessel_prefix, dest,
PV_COPY_FLAGS_NONE, error))
return FALSE;
flatpak_bwrap_add_args (bwrap,
"--symlink",
"/usr/lib/pressure-vessel/from-host",
"/run/pressure-vessel/pv-from-host",
NULL);
self->adverb_in_container = "/usr/lib/pressure-vessel/from-host/bin/pressure-vessel-adverb";
}
else
{
g_autofree gchar *pressure_vessel_prefix_in_host_namespace =
pv_current_namespace_path_to_host_path (pressure_vessel_prefix);
flatpak_bwrap_add_args (bwrap,
"--ro-bind",
pressure_vessel_prefix_in_host_namespace,
"/run/pressure-vessel/pv-from-host",
NULL);
self->adverb_in_container = "/run/pressure-vessel/pv-from-host/bin/pressure-vessel-adverb";
}
/* Some games detect that they have been run outside the Steam Runtime
* and try to re-run themselves via Steam. Trick them into thinking
* they are in the LD_LIBRARY_PATH Steam Runtime.
*
* We do not do this for games developed against soldier, because
* backwards compatibility is not a concern for game developers who
* have specifically opted-in to using the newer runtime. */
if (self->is_scout)
flatpak_bwrap_set_env (bwrap, "STEAM_RUNTIME", "/", TRUE);
pv_runtime_set_search_paths (self, bwrap);
return TRUE;
}
void
pv_runtime_set_search_paths (PvRuntime *self,
FlatpakBwrap *bwrap)
{
g_autoptr(GString) ld_library_path = g_string_new ("");
gsize i;
/* TODO: Adapt the use_ld_so_cache code from Flatpak instead
* of setting LD_LIBRARY_PATH, for better robustness against
* games that set their own LD_LIBRARY_PATH ignoring what they
* got from the environment */
g_assert (multiarch_tuples[G_N_ELEMENTS (multiarch_tuples) - 1] == NULL);
for (i = 0; i < G_N_ELEMENTS (multiarch_tuples) - 1; i++)
{
g_autofree gchar *ld_path = NULL;
ld_path = g_build_filename (self->overrides_in_container, "lib",
multiarch_tuples[i], NULL);
pv_search_path_append (ld_library_path, ld_path);
}
/* The PATH from outside the container doesn't really make sense inside the
* container: in principle the layout could be totally different. */
flatpak_bwrap_set_env (bwrap, "PATH", "/usr/bin:/bin", TRUE);
flatpak_bwrap_set_env (bwrap, "LD_LIBRARY_PATH", ld_library_path->str, TRUE);
}
static void
pv_runtime_initable_iface_init (GInitableIface *iface,
gpointer unused G_GNUC_UNUSED)
{
iface->init = pv_runtime_initable_init;
}