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vpick: ensure extension ABI matches the root's

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Extensions can only run on the same ABI as the root image,
so if an ABI is specified, ensure the extensions match it
This commit is contained in:
Luca Boccassi 2024-07-18 23:10:53 +01:00
parent 56b16cb583
commit dbb5891f8c
4 changed files with 26 additions and 6 deletions
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12
src/core/exec-invoke.c
View File

@ -2994,7 +2994,8 @@ static int pick_versions(
const ExecContext *context,
const ExecParameters *params,
char **ret_root_image,
char **ret_root_directory) {
char **ret_root_directory,
Abi *ret_root_abi) {
int r;
@ -3002,6 +3003,7 @@ static int pick_versions(
assert(params);
assert(ret_root_image);
assert(ret_root_directory);
assert(ret_root_abi);
if (context->root_image) {
_cleanup_(pick_result_done) PickResult result = PICK_RESULT_NULL;
@ -3020,6 +3022,7 @@ static int pick_versions(
*ret_root_image = TAKE_PTR(result.path);
*ret_root_directory = NULL;
*ret_root_abi = result.abi;
return r;
}
@ -3040,10 +3043,12 @@ static int pick_versions(
*ret_root_image = NULL;
*ret_root_directory = TAKE_PTR(result.path);
*ret_root_abi = result.abi;
return r;
}
*ret_root_image = *ret_root_directory = NULL;
*ret_root_abi = _ABI_INVALID;
return 0;
}
@ -3066,6 +3071,7 @@ static int apply_mount_namespace(
bool setup_os_release_symlink;
BindMount *bind_mounts = NULL;
size_t n_bind_mounts = 0;
Abi root_abi = _ABI_INVALID;
int r;
assert(context);
@ -3077,7 +3083,8 @@ static int apply_mount_namespace(
context,
params,
&root_image,
&root_dir);
&root_dir,
&root_abi);
if (r < 0)
return r;
@ -3194,6 +3201,7 @@ static int apply_mount_namespace(
.root_image = root_image,
.root_image_options = context->root_image_options,
.root_image_policy = context->root_image_policy ?: &image_policy_service,
.root_abi = root_abi,
.read_write_paths = read_write_paths,
.read_only_paths = needs_sandboxing ? context->read_only_paths : NULL,

13
src/core/namespace.c
View File

@ -473,6 +473,7 @@ static int append_mount_images(MountList *ml, const MountImage *mount_images, si
static int append_extensions(
MountList *ml,
const char *root,
Abi root_abi,
const char *private_namespace_dir,
char **hierarchies,
const MountImage *mount_images,
@ -511,11 +512,14 @@ static int append_extensions(
_cleanup_(pick_result_done) PickResult result = PICK_RESULT_NULL;
_cleanup_free_ char *mount_point = NULL;
const MountImage *m = mount_images + i;
/* Ensure we pick extensions with the same ABI as the root */
PickFilter filter = pick_filter_image_raw;
filter.abi = root_abi;
r = path_pick(/* toplevel_path= */ NULL,
/* toplevel_fd= */ AT_FDCWD,
m->source,
&pick_filter_image_raw,
&filter,
PICK_ABI|PICK_TRIES,
&result);
if (r < 0)
@ -566,6 +570,9 @@ static int append_extensions(
_cleanup_free_ char *mount_point = NULL;
const char *e = *extension_directory;
bool ignore_enoent = false;
/* Ensure we pick extensions with the same ABI as the root */
PickFilter filter = pick_filter_image_dir;
filter.abi = root_abi;
/* Pick up the counter where the ExtensionImages left it. */
if (asprintf(&mount_point, "%s/unit-extensions/%zu", private_namespace_dir, n_mount_images++) < 0)
@ -583,7 +590,7 @@ static int append_extensions(
r = path_pick(/* toplevel_path= */ NULL,
/* toplevel_fd= */ AT_FDCWD,
e,
&pick_filter_image_dir,
&filter,
PICK_ABI|PICK_TRIES,
&result);
if (r < 0)
@ -2396,7 +2403,7 @@ int setup_namespace(const NamespaceParameters *p, char **error_path) {
if (r < 0)
return r;
r = append_extensions(&ml, root, p->private_namespace_dir, hierarchies, p->extension_images, p->n_extension_images, p->extension_directories);
r = append_extensions(&ml, root, p->root_abi, p->private_namespace_dir, hierarchies, p->extension_images, p->n_extension_images, p->extension_directories);
if (r < 0)
return r;

1
src/core/namespace.h
View File

@ -97,6 +97,7 @@ struct NamespaceParameters {
const char *root_image;
const MountOptions *root_image_options;
const ImagePolicy *root_image_policy;
Abi root_abi;
char **read_write_paths;
char **read_only_paths;

6
src/portable/portable.c
View File

@ -615,10 +615,14 @@ static int extract_image_and_extensions(
const char *path = *p;
if (path_is_absolute(*p)) {
/* Ensure we pick extensions with the same ABI as the root */
PickFilter filter = pick_filter_image_any;
filter.abi = result.abi;
r = path_pick(/* toplevel_path= */ NULL,
/* toplevel_fd= */ AT_FDCWD,
*p,
&pick_filter_image_any,
&filter,
PICK_ABI|PICK_TRIES|PICK_RESOLVE,
&ext_result);
if (r < 0)