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gboolean
_ostree_bootloader_grub2_generate_config (OstreeSysroot *sysroot,
int bootversion,
int target_fd,
GCancellable *cancellable,
GError **error)
{
static const char hardcoded_video[] = "load_video\n"
"set gfxpayload=keep\n";
static const char hardcoded_insmods[] = "insmod gzio\n";
const char *grub2_boot_device_id =
g_getenv ("GRUB2_BOOT_DEVICE_ID");
const char *grub2_prepare_root_cache =
g_getenv ("GRUB2_PREPARE_ROOT_CACHE");
g_assert (grub2_boot_device_id != NULL);
g_assert (grub2_prepare_root_cache != NULL);
gboolean is_efi = g_getenv ("_OSTREE_GRUB2_IS_EFI") != NULL;
g_autoptr(GOutputStream) out_stream = g_unix_output_stream_new (target_fd, FALSE);
g_autoptr(GPtrArray) loader_configs = NULL;
if (!_ostree_sysroot_read_boot_loader_configs (sysroot, bootversion,
&loader_configs,
cancellable, error))
return FALSE;
g_autoptr(GString) output = g_string_new ("");
for (guint i = 0; i < loader_configs->len; i++)
{
OstreeBootconfigParser *config = loader_configs->pdata[i];
const char *title;
const char *options;
const char *kernel;
const char *initrd;
const char *devicetree;
char *quoted_title = NULL;
char *uuid = NULL;
char *quoted_uuid = NULL;
title = ostree_bootconfig_parser_get (config, "title");
if (!title)
title = "(Untitled)";
kernel = ostree_bootconfig_parser_get (config, "linux");
quoted_title = g_shell_quote (title);
uuid = g_strdup_printf ("ostree-%u-%s", (guint)i, grub2_boot_device_id);
quoted_uuid = g_shell_quote (uuid);
g_string_append_printf (output, "menuentry %s --class gnu-linux --class gnu --class os --unrestricted %s {\n", quoted_title, quoted_uuid);
g_free (uuid);
g_free (quoted_title);
g_free (quoted_uuid);
g_string_append (output, hardcoded_video);
g_string_append (output, hardcoded_insmods);
g_string_append (output, grub2_prepare_root_cache);
g_string_append_c (output, '\n');
if (!kernel)
return glnx_throw (error, "No \"linux\" key in bootloader config");
g_string_append (output, "linux");
if (is_efi)
g_string_append (output, GRUB2_EFI_SUFFIX);
else
g_string_append (output, GRUB2_SUFFIX);
g_string_append_c (output, ' ');
g_string_append (output, kernel);
options = ostree_bootconfig_parser_get (config, "options");
if (options)
{
g_string_append_c (output, ' ');
g_string_append (output, options);
}
g_string_append_c (output, '\n');
initrd = ostree_bootconfig_parser_get (config, "initrd");
if (initrd)
{
g_string_append (output, "initrd");
if (is_efi)
g_string_append (output, GRUB2_EFI_SUFFIX);
else
g_string_append (output, GRUB2_SUFFIX);
g_string_append_c (output, ' ');
g_string_append (output, initrd);
g_string_append_c (output, '\n');
}
devicetree = ostree_bootconfig_parser_get (config, "devicetree");
if (devicetree)
{
g_string_append (output, "devicetree");
g_string_append_c (output, ' ');
g_string_append (output, devicetree);
g_string_append_c (output, '\n');
}
g_string_append (output, "}\n");
}
gsize bytes_written;
if (!g_output_stream_write_all (out_stream, output->str, output->len,
&bytes_written, cancellable, error))
return FALSE;
return TRUE;
}
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