/**
* rpmostree_prepare_rootfs_for_commit:
*
* Walk over the root filesystem and perform some core conversions
* from RPM conventions to OSTree conventions. For example:
*
* * Move /etc to /usr/etc
* * Checksum the kernel in /boot
* * Migrate content in /var to systemd-tmpfiles
*/
gboolean
rpmostree_prepare_rootfs_for_commit (GFile *rootfs,
JsonObject *treefile,
GCancellable *cancellable,
GError **error)
{
gboolean ret = FALSE;
gs_unref_object GFile *rootfs_tmp = NULL;
gs_free char *rootfs_tmp_path = NULL;
rootfs_tmp_path = g_strconcat (gs_file_get_path_cached (rootfs), ".tmp", NULL);
rootfs_tmp = g_file_new_for_path (rootfs_tmp_path);
if (!gs_shutil_rm_rf (rootfs_tmp, cancellable, error))
goto out;
if (!create_rootfs_from_yumroot_content (rootfs_tmp, rootfs, treefile,
cancellable, error))
goto out;
if (!gs_shutil_rm_rf (rootfs, cancellable, error))
goto out;
if (!gs_file_rename (rootfs_tmp, rootfs, cancellable, error))
goto out;
ret = TRUE;
out:
return ret;
}
static gboolean
move_to_dir (GFile *src,
GFile *dest_dir,
GCancellable *cancellable,
GError **error)
{
gs_unref_object GFile *dest =
g_file_get_child (dest_dir, gs_file_get_basename_cached (src));
return gs_file_rename (src, dest, cancellable, error);
}
/**
* ot_gfile_atomic_symlink_swap:
* @path: Replace the contents of this symbolic link
* @target: New symbolic link target
* @cancellable:
* @error
*
* Create a new temporary symbolic link, then use the Unix rename()
* function to atomically replace @path with the new symbolic link.
* Do not use this function inside directories such as /tmp as it uses
* a predicatable file name.
*/
gboolean
ot_gfile_atomic_symlink_swap (GFile *path,
const char *target,
GCancellable *cancellable,
GError **error)
{
gboolean ret = FALSE;
g_autoptr(GFile) parent = g_file_get_parent (path);
g_autofree char *tmpname = g_strconcat (gs_file_get_basename_cached (path), ".tmp", NULL);
g_autoptr(GFile) tmppath = g_file_get_child (parent, tmpname);
int parent_dfd = -1;
if (!ot_gfile_ensure_unlinked (tmppath, cancellable, error))
goto out;
if (!g_file_make_symbolic_link (tmppath, target, cancellable, error))
goto out;
if (!gs_file_open_dir_fd (parent, &parent_dfd, cancellable, error))
goto out;
/* Ensure the link has hit disk */
if (fsync (parent_dfd) != 0)
{
gs_set_error_from_errno (error, errno);
goto out;
}
if (!gs_file_rename (tmppath, path, cancellable, error))
goto out;
/* And sync again for good measure */
if (fsync (parent_dfd) != 0)
{
gs_set_error_from_errno (error, errno);
goto out;
}
ret = TRUE;
out:
if (parent_dfd != -1) (void) close (parent_dfd);
return ret;
}
/* Prepare a root filesystem, taking mainly the contents of /usr from yumroot */
static gboolean
create_rootfs_from_yumroot_content (GFile *targetroot,
GFile *yumroot,
JsonObject *treefile,
GCancellable *cancellable,
GError **error)
{
gboolean ret = FALSE;
glnx_fd_close int src_rootfs_fd = -1;
glnx_fd_close int target_root_dfd = -1;
gs_unref_object GFile *kernel_path = NULL;
gs_unref_object GFile *initramfs_path = NULL;
gs_unref_hashtable GHashTable *preserve_groups_set = NULL;
gboolean container = FALSE;
if (!glnx_opendirat (AT_FDCWD, gs_file_get_path_cached (yumroot), TRUE,
&src_rootfs_fd, error))
goto out;
if (!_rpmostree_jsonutil_object_get_optional_boolean_member (treefile,
"container",
&container,
error))
goto out;
g_print ("Preparing kernel\n");
if (!container && !do_kernel_prep (yumroot, treefile, cancellable, error))
goto out;
g_print ("Initializing rootfs\n");
if (!init_rootfs (targetroot, cancellable, error))
goto out;
if (!glnx_opendirat (AT_FDCWD, gs_file_get_path_cached (targetroot), TRUE, &target_root_dfd, error))
goto out;
g_print ("Migrating /etc/passwd to /usr/lib/\n");
if (!rpmostree_passwd_migrate_except_root (yumroot, RPM_OSTREE_PASSWD_MIGRATE_PASSWD, NULL,
cancellable, error))
goto out;
if (json_object_has_member (treefile, "etc-group-members"))
{
JsonArray *etc_group_members = json_object_get_array_member (treefile, "etc-group-members");
preserve_groups_set = _rpmostree_jsonutil_jsarray_strings_to_set (etc_group_members);
}
g_print ("Migrating /etc/group to /usr/lib/\n");
if (!rpmostree_passwd_migrate_except_root (yumroot, RPM_OSTREE_PASSWD_MIGRATE_GROUP,
preserve_groups_set,
cancellable, error))
goto out;
/* NSS configuration to look at the new files */
{
gs_unref_object GFile *yumroot_etc =
g_file_resolve_relative_path (yumroot, "etc");
if (!replace_nsswitch (yumroot_etc, cancellable, error))
goto out;
}
/* We take /usr from the yum content */
g_print ("Moving /usr to target\n");
{
gs_unref_object GFile *usr = g_file_get_child (yumroot, "usr");
if (!move_to_dir (usr, targetroot, cancellable, error))
goto out;
}
/* Except /usr/local -> ../var/usrlocal */
g_print ("Linking /usr/local -> ../var/usrlocal\n");
{
gs_unref_object GFile *target_usrlocal =
g_file_resolve_relative_path (targetroot, "usr/local");
if (!gs_shutil_rm_rf (target_usrlocal, cancellable, error))
goto out;
if (!g_file_make_symbolic_link (target_usrlocal, "../var/usrlocal",
cancellable, error))
goto out;
}
/* And now we take the contents of /etc and put them in /usr/etc */
g_print ("Moving /etc to /usr/etc\n");
{
gs_unref_object GFile *yumroot_etc =
g_file_get_child (yumroot, "etc");
gs_unref_object GFile *target_usretc =
g_file_resolve_relative_path (targetroot, "usr/etc");
if (!gs_file_rename (yumroot_etc, target_usretc,
cancellable, error))
goto out;
}
if (!migrate_rpm_and_yumdb (targetroot, yumroot, cancellable, error))
goto out;
if (!convert_var_to_tmpfiles_d (src_rootfs_fd, target_root_dfd, cancellable, error))
goto out;
/* Move boot, but rename the kernel/initramfs to have a checksum */
if (!container)
{
gs_unref_object GFile *yumroot_boot =
g_file_get_child (yumroot, "boot");
gs_unref_object GFile *target_boot =
g_file_get_child (targetroot, "boot");
gs_unref_object GFile *target_usrlib =
g_file_resolve_relative_path (targetroot, "usr/lib");
gs_unref_object GFile *target_usrlib_ostree_boot =
g_file_resolve_relative_path (target_usrlib, "ostree-boot");
RpmOstreePostprocessBootLocation boot_location =
RPMOSTREE_POSTPROCESS_BOOT_LOCATION_BOTH;
const char *boot_location_str = NULL;
g_print ("Moving /boot\n");
if (!_rpmostree_jsonutil_object_get_optional_string_member (treefile,
"boot_location",
&boot_location_str, error))
goto out;
if (boot_location_str != NULL)
{
if (strcmp (boot_location_str, "legacy") == 0)
boot_location = RPMOSTREE_POSTPROCESS_BOOT_LOCATION_LEGACY;
else if (strcmp (boot_location_str, "both") == 0)
boot_location = RPMOSTREE_POSTPROCESS_BOOT_LOCATION_BOTH;
else if (strcmp (boot_location_str, "new") == 0)
boot_location = RPMOSTREE_POSTPROCESS_BOOT_LOCATION_NEW;
else
{
g_set_error (error, G_IO_ERROR, G_IO_ERROR_FAILED,
"Invalid boot location '%s'", boot_location_str);
goto out;
}
}
if (!gs_file_ensure_directory (target_usrlib, TRUE, cancellable, error))
goto out;
switch (boot_location)
{
case RPMOSTREE_POSTPROCESS_BOOT_LOCATION_LEGACY:
{
g_print ("Using boot location: legacy\n");
if (!gs_file_rename (yumroot_boot, target_boot, cancellable, error))
goto out;
}
break;
case RPMOSTREE_POSTPROCESS_BOOT_LOCATION_BOTH:
{
g_print ("Using boot location: both\n");
if (!gs_file_rename (yumroot_boot, target_boot, cancellable, error))
goto out;
/* Hardlink the existing content, only a little ugly as
* we'll end up sha256'ing it twice, but oh well. */
if (!gs_shutil_cp_al_or_fallback (target_boot, target_usrlib_ostree_boot, cancellable, error))
goto out;
}
break;
case RPMOSTREE_POSTPROCESS_BOOT_LOCATION_NEW:
{
g_print ("Using boot location: new\n");
if (!gs_file_rename (yumroot_boot, target_usrlib_ostree_boot, cancellable, error))
goto out;
}
break;
}
}
/* Also carry along toplevel compat links */
g_print ("Copying toplevel compat symlinks\n");
{
guint i;
const char *toplevel_links[] = { "lib", "lib64", "lib32",
"bin", "sbin"
};
for (i = 0; i < G_N_ELEMENTS (toplevel_links); i++)
{
gs_unref_object GFile *srcpath =
g_file_get_child (yumroot, toplevel_links[i]);
if (g_file_query_file_type (srcpath, G_FILE_QUERY_INFO_NOFOLLOW_SYMLINKS, NULL) == G_FILE_TYPE_SYMBOLIC_LINK)
{
if (!move_to_dir (srcpath, targetroot, cancellable, error))
goto out;
}
}
}
g_print ("Adding tmpfiles-ostree-integration.conf\n");
{
gs_unref_object GFile *src_pkglibdir = g_file_new_for_path (PKGLIBDIR);
gs_unref_object GFile *src_tmpfilesd =
g_file_get_child (src_pkglibdir, "tmpfiles-ostree-integration.conf");
gs_unref_object GFile *target_tmpfilesd =
g_file_resolve_relative_path (targetroot, "usr/lib/tmpfiles.d/tmpfiles-ostree-integration.conf");
gs_unref_object GFile *target_tmpfilesd_parent = g_file_get_parent (target_tmpfilesd);
if (!gs_file_ensure_directory (target_tmpfilesd_parent, TRUE, cancellable, error))
goto out;
if (!g_file_copy (src_tmpfilesd, target_tmpfilesd, 0,
cancellable, NULL, NULL, error))
goto out;
}
ret = TRUE;
out:
return ret;
}
static gboolean
migrate_rpm_and_yumdb (GFile *targetroot,
GFile *yumroot,
GCancellable *cancellable,
GError **error)
{
gboolean ret = FALSE;
gs_unref_object GFile *usrbin_rpm =
g_file_resolve_relative_path (targetroot, "usr/bin/rpm");
gs_unref_object GFile *legacyrpm_path =
g_file_resolve_relative_path (yumroot, "var/lib/rpm");
gs_unref_object GFile *newrpm_path =
g_file_resolve_relative_path (targetroot, "usr/share/rpm");
gs_unref_object GFile *src_yum_rpmdb_indexes =
g_file_resolve_relative_path (yumroot, "var/lib/yum");
gs_unref_object GFile *target_yum_rpmdb_indexes =
g_file_resolve_relative_path (targetroot, "usr/share/yumdb");
gs_unref_object GFile *yumroot_yumlib =
g_file_get_child (yumroot, "var/lib/yum");
gs_unref_object GFileEnumerator *direnum = NULL;
direnum = g_file_enumerate_children (legacyrpm_path, "standard::name",
G_FILE_QUERY_INFO_NOFOLLOW_SYMLINKS,
cancellable, error);
if (!direnum)
goto out;
while (TRUE)
{
const char *name;
GFileInfo *file_info;
GFile *child;
if (!gs_file_enumerator_iterate (direnum, &file_info, &child,
cancellable, error))
goto out;
if (!file_info)
break;
name = g_file_info_get_name (file_info);
if (g_str_has_prefix (name, "__db.") ||
strcmp (name, ".dbenv.lock") == 0 ||
strcmp (name, ".rpm.lock") == 0)
{
if (!gs_file_unlink (child, cancellable, error))
goto out;
}
}
(void) g_file_enumerator_close (direnum, cancellable, error);
g_print ("Placing RPM db in /usr/share/rpm\n");
if (!gs_file_rename (legacyrpm_path, newrpm_path, cancellable, error))
goto out;
/* Remove /var/lib/yum; we don't want it here. */
if (!gs_shutil_rm_rf (yumroot_yumlib, cancellable, error))
goto out;
ret = TRUE;
out:
return ret;
}
static gboolean
do_kernel_prep (GFile *yumroot,
JsonObject *treefile,
GCancellable *cancellable,
GError **error)
{
gboolean ret = FALSE;
gs_unref_object GFile *bootdir =
g_file_get_child (yumroot, "boot");
gs_unref_object GFile *kernel_path = NULL;
gs_unref_object GFile *initramfs_path = NULL;
const char *boot_checksum_str = NULL;
GChecksum *boot_checksum = NULL;
g_autofree char *kver = NULL;
if (!find_kernel_and_initramfs_in_bootdir (bootdir, &kernel_path,
&initramfs_path,
cancellable, error))
goto out;
if (kernel_path == NULL)
{
gs_unref_object GFile *mod_dir = g_file_resolve_relative_path (yumroot, "usr/lib/modules");
gs_unref_object GFile *modversion_dir = NULL;
if (!find_ensure_one_subdirectory (mod_dir, &modversion_dir, cancellable, error))
goto out;
if (modversion_dir)
{
kver = g_file_get_basename (modversion_dir);
if (!find_kernel_and_initramfs_in_bootdir (modversion_dir, &kernel_path,
&initramfs_path,
cancellable, error))
goto out;
}
}
if (kernel_path == NULL)
{
g_set_error (error, G_IO_ERROR, G_IO_ERROR_FAILED,
"Unable to find kernel (vmlinuz) in /boot or /usr/lib/modules");
goto out;
}
if (initramfs_path)
{
g_print ("Removing RPM-generated '%s'\n",
gs_file_get_path_cached (initramfs_path));
if (!gs_shutil_rm_rf (initramfs_path, cancellable, error))
goto out;
}
if (!kver)
{
const char *kname = gs_file_get_basename_cached (kernel_path);
const char *kver_p;
kver_p = strchr (kname, '-');
g_assert (kver_p);
kver = g_strdup (kver_p + 1);
}
/* OSTree needs to own this */
{
gs_unref_object GFile *loaderdir = g_file_get_child (bootdir, "loader");
if (!gs_shutil_rm_rf (loaderdir, cancellable, error))
goto out;
}
{
char *child_argv[] = { "depmod", (char*)kver, NULL };
if (!run_sync_in_root (yumroot, "depmod", child_argv, error))
goto out;
}
/* Ensure the /etc/machine-id file is present and empty. Apparently systemd
doesn't work when the file is missing (as of systemd-219-9.fc22) but it is
correctly populated if the file is there. */
g_print ("Creating empty machine-id\n");
{
const char *hardcoded_machine_id = "";
gs_unref_object GFile *machineid_path =
g_file_resolve_relative_path (yumroot, "etc/machine-id");
if (!g_file_replace_contents (machineid_path, hardcoded_machine_id,
strlen (hardcoded_machine_id),
NULL, FALSE, 0, NULL,
cancellable, error))
goto out;
}
{
gboolean reproducible;
gs_unref_ptrarray GPtrArray *dracut_argv = g_ptr_array_new ();
if (!dracut_supports_reproducible (yumroot, &reproducible, cancellable, error))
goto out;
g_ptr_array_add (dracut_argv, "dracut");
g_ptr_array_add (dracut_argv, "-v");
if (reproducible)
{
g_ptr_array_add (dracut_argv, "--reproducible");
g_ptr_array_add (dracut_argv, "--gzip");
}
g_ptr_array_add (dracut_argv, "--tmpdir=/tmp");
g_ptr_array_add (dracut_argv, "-f");
g_ptr_array_add (dracut_argv, "/var/tmp/initramfs.img");
g_ptr_array_add (dracut_argv, (char*)kver);
if (json_object_has_member (treefile, "initramfs-args"))
{
guint i, len;
JsonArray *initramfs_args;
initramfs_args = json_object_get_array_member (treefile, "initramfs-args");
len = json_array_get_length (initramfs_args);
for (i = 0; i < len; i++)
{
const char *arg = _rpmostree_jsonutil_array_require_string_element (initramfs_args, i, error);
if (!arg)
goto out;
g_ptr_array_add (dracut_argv, (char*)arg);
}
}
g_ptr_array_add (dracut_argv, NULL);
if (!run_sync_in_root (yumroot, "dracut", (char**)dracut_argv->pdata, error))
goto out;
}
initramfs_path = g_file_resolve_relative_path (yumroot, "var/tmp/initramfs.img");
if (!g_file_query_exists (initramfs_path, NULL))
{
g_set_error (error, G_IO_ERROR, G_IO_ERROR_FAILED,
"Dracut failed to generate '%s'",
gs_file_get_path_cached (initramfs_path));
goto out;
}
{
gs_free char *initramfs_name = g_strconcat ("initramfs-", kver, ".img", NULL);
gs_unref_object GFile *initramfs_dest =
g_file_get_child (bootdir, initramfs_name);
if (!gs_file_rename (initramfs_path, initramfs_dest,
cancellable, error))
goto out;
/* Transfer ownership */
g_object_unref (initramfs_path);
initramfs_path = initramfs_dest;
initramfs_dest = NULL;
}
boot_checksum = g_checksum_new (G_CHECKSUM_SHA256);
if (!_rpmostree_util_update_checksum_from_file (boot_checksum, kernel_path,
cancellable, error))
goto out;
if (!_rpmostree_util_update_checksum_from_file (boot_checksum, initramfs_path,
cancellable, error))
goto out;
boot_checksum_str = g_checksum_get_string (boot_checksum);
{
gs_free char *new_kernel_name =
g_strconcat (gs_file_get_basename_cached (kernel_path), "-",
boot_checksum_str, NULL);
gs_unref_object GFile *new_kernel_path =
g_file_get_child (bootdir, new_kernel_name);
gs_free char *new_initramfs_name =
g_strconcat (gs_file_get_basename_cached (initramfs_path), "-",
boot_checksum_str, NULL);
gs_unref_object GFile *new_initramfs_path =
g_file_get_child (bootdir, new_initramfs_name);
if (!gs_file_rename (kernel_path, new_kernel_path,
cancellable, error))
goto out;
if (!gs_file_rename (initramfs_path, new_initramfs_path,
cancellable, error))
goto out;
}
ret = TRUE;
out:
if (boot_checksum) g_checksum_free (boot_checksum);
return ret;
}
static gboolean
migrate_rpm_and_yumdb (GFile *targetroot,
GFile *yumroot,
GCancellable *cancellable,
GError **error)
{
gboolean ret = FALSE;
gs_unref_object GFile *usrbin_rpm =
g_file_resolve_relative_path (targetroot, "usr/bin/rpm");
gs_unref_object GFile *legacyrpm_path =
g_file_resolve_relative_path (yumroot, "var/lib/rpm");
gs_unref_object GFile *newrpm_path =
g_file_resolve_relative_path (targetroot, "usr/share/rpm");
gs_unref_object GFile *src_yum_rpmdb_indexes =
g_file_resolve_relative_path (yumroot, "var/lib/yum");
gs_unref_object GFile *target_yum_rpmdb_indexes =
g_file_resolve_relative_path (targetroot, "usr/share/yumdb");
gs_unref_object GFile *yumroot_yumlib =
g_file_get_child (yumroot, "var/lib/yum");
gs_unref_object GFileEnumerator *direnum = NULL;
direnum = g_file_enumerate_children (legacyrpm_path, "standard::name",
G_FILE_QUERY_INFO_NOFOLLOW_SYMLINKS,
cancellable, error);
if (!direnum)
goto out;
while (TRUE)
{
const char *name;
GFileInfo *file_info;
GFile *child;
if (!gs_file_enumerator_iterate (direnum, &file_info, &child,
cancellable, error))
goto out;
if (!file_info)
break;
name = g_file_info_get_name (file_info);
if (g_str_has_prefix (name, "__db.") ||
strcmp (name, ".dbenv.lock") == 0 ||
strcmp (name, ".rpm.lock") == 0)
{
if (!gs_file_unlink (child, cancellable, error))
goto out;
}
}
(void) g_file_enumerator_close (direnum, cancellable, error);
g_print ("Placing RPM db in /usr/share/rpm\n");
if (!gs_file_rename (legacyrpm_path, newrpm_path, cancellable, error))
goto out;
/* Move the yum database to usr/share/yumdb; disabled for now due
* to bad conflict with OSTree's current
* one-http-request-per-file.
*/
#if 0
if (g_file_query_exists (src_yum_rpmdb_indexes, NULL))
{
g_print ("Moving %s to %s\n", gs_file_get_path_cached (src_yum_rpmdb_indexes),
gs_file_get_path_cached (target_yum_rpmdb_indexes));
if (!gs_file_rename (src_yum_rpmdb_indexes, target_yum_rpmdb_indexes,
cancellable, error))
goto out;
if (!clean_yumdb_extraneous_files (target_yum_rpmdb_indexes, cancellable, error))
goto out;
}
#endif
/* Remove /var/lib/yum; we don't want it here. */
if (!gs_shutil_rm_rf (yumroot_yumlib, cancellable, error))
goto out;
ret = TRUE;
out:
return ret;
}
static gboolean
do_kernel_prep (GFile *yumroot,
JsonObject *treefile,
GCancellable *cancellable,
GError **error)
{
gboolean ret = FALSE;
gs_unref_object GFile *bootdir =
g_file_get_child (yumroot, "boot");
gs_unref_object GFile *kernel_path = NULL;
gs_unref_object GFile *initramfs_path = NULL;
const char *boot_checksum_str = NULL;
GChecksum *boot_checksum = NULL;
const char *kname;
const char *kver;
if (!find_kernel_and_initramfs_in_bootdir (bootdir, &kernel_path,
&initramfs_path,
cancellable, error))
goto out;
if (initramfs_path)
{
g_print ("Removing RPM-generated '%s'\n",
gs_file_get_path_cached (initramfs_path));
if (!gs_shutil_rm_rf (initramfs_path, cancellable, error))
goto out;
}
kname = gs_file_get_basename_cached (kernel_path);
kver = strchr (kname, '-');
g_assert (kver);
kver += 1;
/* OSTree needs to own this */
{
gs_unref_object GFile *loaderdir = g_file_get_child (bootdir, "loader");
if (!gs_shutil_rm_rf (loaderdir, cancellable, error))
goto out;
}
{
char *child_argv[] = { "depmod", (char*)kver, NULL };
if (!run_sync_in_root (yumroot, "/usr/sbin/depmod", child_argv, error))
goto out;
}
/* Copy of code from gnome-continuous; yes, we hardcode
the machine id for now, because distributing pre-generated
initramfs images with dracut/systemd at the moment
effectively requires this.
http://lists.freedesktop.org/archives/systemd-devel/2013-July/011770.html
*/
g_print ("Hardcoding machine-id\n");
{
const char *hardcoded_machine_id = "45bb3b96146aa94f299b9eb43646eb35\n";
gs_unref_object GFile *machineid_path =
g_file_resolve_relative_path (yumroot, "etc/machine-id");
if (!g_file_replace_contents (machineid_path, hardcoded_machine_id,
strlen (hardcoded_machine_id),
NULL, FALSE, 0, NULL,
cancellable, error))
goto out;
}
{
gs_unref_ptrarray GPtrArray *dracut_argv = g_ptr_array_new ();
g_ptr_array_add (dracut_argv, "dracut");
g_ptr_array_add (dracut_argv, "-v");
g_ptr_array_add (dracut_argv, "--tmpdir=/tmp");
g_ptr_array_add (dracut_argv, "-f");
g_ptr_array_add (dracut_argv, "/var/tmp/initramfs.img");
g_ptr_array_add (dracut_argv, (char*)kver);
if (json_object_has_member (treefile, "initramfs-args"))
{
guint i, len;
JsonArray *initramfs_args;
initramfs_args = json_object_get_array_member (treefile, "initramfs-args");
len = json_array_get_length (initramfs_args);
for (i = 0; i < len; i++)
{
const char *arg = _rpmostree_jsonutil_array_require_string_element (initramfs_args, i, error);
if (!arg)
goto out;
g_ptr_array_add (dracut_argv, (char*)arg);
}
}
g_ptr_array_add (dracut_argv, NULL);
if (!run_sync_in_root (yumroot, "/usr/sbin/dracut", (char**)dracut_argv->pdata, error))
goto out;
}
initramfs_path = g_file_resolve_relative_path (yumroot, "var/tmp/initramfs.img");
if (!g_file_query_exists (initramfs_path, NULL))
{
g_set_error (error, G_IO_ERROR, G_IO_ERROR_FAILED,
"Dracut failed to generate '%s'",
gs_file_get_path_cached (initramfs_path));
goto out;
}
{
gs_free char *initramfs_name = g_strconcat ("initramfs-", kver, ".img", NULL);
gs_unref_object GFile *initramfs_dest =
g_file_get_child (bootdir, initramfs_name);
if (!gs_file_rename (initramfs_path, initramfs_dest,
cancellable, error))
goto out;
/* Transfer ownership */
g_object_unref (initramfs_path);
initramfs_path = initramfs_dest;
initramfs_dest = NULL;
}
boot_checksum = g_checksum_new (G_CHECKSUM_SHA256);
if (!_rpmostree_util_update_checksum_from_file (boot_checksum, kernel_path,
cancellable, error))
goto out;
if (!_rpmostree_util_update_checksum_from_file (boot_checksum, initramfs_path,
cancellable, error))
goto out;
boot_checksum_str = g_checksum_get_string (boot_checksum);
{
gs_free char *new_kernel_name =
g_strconcat (gs_file_get_basename_cached (kernel_path), "-",
boot_checksum_str, NULL);
gs_unref_object GFile *new_kernel_path =
g_file_get_child (bootdir, new_kernel_name);
gs_free char *new_initramfs_name =
g_strconcat (gs_file_get_basename_cached (initramfs_path), "-",
boot_checksum_str, NULL);
gs_unref_object GFile *new_initramfs_path =
g_file_get_child (bootdir, new_initramfs_name);
if (!gs_file_rename (kernel_path, new_kernel_path,
cancellable, error))
goto out;
if (!gs_file_rename (initramfs_path, new_initramfs_path,
cancellable, error))
goto out;
}
ret = TRUE;
out:
if (boot_checksum) g_checksum_free (boot_checksum);
return ret;
}
static gboolean
_ostree_bootloader_grub2_write_config (OstreeBootloader *bootloader,
int bootversion,
GCancellable *cancellable,
GError **error)
{
OstreeBootloaderGrub2 *self = OSTREE_BOOTLOADER_GRUB2 (bootloader);
gboolean ret = FALSE;
gs_unref_object GFile *efi_new_config_temp = NULL;
gs_unref_object GFile *efi_orig_config = NULL;
gs_unref_object GFile *new_config_path = NULL;
gs_unref_object GSSubprocessContext *procctx = NULL;
gs_unref_object GSSubprocess *proc = NULL;
gs_strfreev char **child_env = g_get_environ ();
gs_free char *bootversion_str = g_strdup_printf ("%u", (guint)bootversion);
gs_unref_object GFile *config_path_efi_dir = NULL;
if (self->is_efi)
{
config_path_efi_dir = g_file_get_parent (self->config_path_efi);
new_config_path = g_file_get_child (config_path_efi_dir, "grub.cfg.new");
/* We use grub2-mkconfig to write to a temporary file first */
if (!ot_gfile_ensure_unlinked (new_config_path, cancellable, error))
goto out;
}
else
{
new_config_path = ot_gfile_resolve_path_printf (self->sysroot->path, "boot/loader.%d/grub.cfg",
bootversion);
}
procctx = gs_subprocess_context_newv ("grub2-mkconfig", "-o",
gs_file_get_path_cached (new_config_path),
NULL);
child_env = g_environ_setenv (child_env, "_OSTREE_GRUB2_BOOTVERSION", bootversion_str, TRUE);
/* We have to pass our state to the child */
if (self->is_efi)
child_env = g_environ_setenv (child_env, "_OSTREE_GRUB2_IS_EFI", "1", TRUE);
gs_subprocess_context_set_environment (procctx, child_env);
gs_subprocess_context_set_stdout_disposition (procctx, GS_SUBPROCESS_STREAM_DISPOSITION_NULL);
if (g_getenv ("OSTREE_DEBUG_GRUB2"))
gs_subprocess_context_set_stderr_disposition (procctx, GS_SUBPROCESS_STREAM_DISPOSITION_INHERIT);
else
gs_subprocess_context_set_stderr_disposition (procctx, GS_SUBPROCESS_STREAM_DISPOSITION_NULL);
/* In the current Fedora grub2 package, this script doesn't even try
to be atomic; it just does:
cat ${grub_cfg}.new > ${grub_cfg}
rm -f ${grub_cfg}.new
Upstream is fixed though.
*/
proc = gs_subprocess_new (procctx, cancellable, error);
if (!proc)
goto out;
if (!gs_subprocess_wait_sync_check (proc, cancellable, error))
goto out;
/* Now let's fdatasync() for the new file */
if (!gs_file_sync_data (new_config_path, cancellable, error))
goto out;
if (self->is_efi)
{
gs_unref_object GFile *config_path_efi_old = g_file_get_child (config_path_efi_dir, "grub.cfg.old");
/* copy current to old */
if (!ot_gfile_ensure_unlinked (config_path_efi_old, cancellable, error))
goto out;
if (!g_file_copy (self->config_path_efi, config_path_efi_old,
G_FILE_COPY_OVERWRITE, cancellable, NULL, NULL, error))
goto out;
if (!ot_gfile_ensure_unlinked (config_path_efi_old, cancellable, error))
goto out;
/* NOTE: NON-ATOMIC REPLACEMENT; WE can't do anything else on FAT;
* see https://bugzilla.gnome.org/show_bug.cgi?id=724246
*/
if (!ot_gfile_ensure_unlinked (self->config_path_efi, cancellable, error))
goto out;
if (!gs_file_rename (new_config_path, self->config_path_efi,
cancellable, error))
goto out;
}
ret = TRUE;
out:
return ret;
}
static gboolean
linkcopy_internal_attempt (GFile *src,
GFile *dest,
GFile *dest_parent,
GFileCopyFlags flags,
gboolean sync_data,
gboolean enable_guestfs_fuse_workaround,
gboolean *out_try_again,
GCancellable *cancellable,
GError **error)
{
gboolean ret = FALSE;
int res;
char *tmp_name = NULL;
GFile *tmp_dest = NULL;
if (g_cancellable_set_error_if_cancelled (cancellable, error))
goto out;
tmp_name = gs_fileutil_gen_tmp_name (NULL, NULL);
tmp_dest = g_file_get_child (dest_parent, tmp_name);
res = link (gs_file_get_path_cached (src), gs_file_get_path_cached (tmp_dest));
if (res == -1)
{
if (errno == EEXIST)
{
/* Nothing, fall through */
*out_try_again = TRUE;
ret = TRUE;
goto out;
}
else if (errno == EXDEV || errno == EMLINK || errno == EPERM
|| (enable_guestfs_fuse_workaround && errno == ENOENT))
{
if (!g_file_copy (src, tmp_dest, flags,
cancellable, NULL, NULL, error))
goto out;
}
else
{
gs_set_prefix_error_from_errno (error, errno, "link");
goto out;
}
}
if (sync_data)
{
/* Now, we need to fsync */
if (!gs_file_sync_data (tmp_dest, cancellable, error))
goto out;
}
if (!gs_file_rename (tmp_dest, dest, cancellable, error))
goto out;
ret = TRUE;
*out_try_again = FALSE;
out:
g_clear_pointer (&tmp_name, g_free);
g_clear_object (&tmp_dest);
return ret;
}