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251 lines
6.0 KiB
251 lines
6.0 KiB
From b09ae20aebe9d8e755960944b6b20b92d760ae51 Mon Sep 17 00:00:00 2001 |
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From: Fedora Ninjas <grub2-owner@fedoraproject.org> |
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Date: Tue, 22 Jan 2013 06:31:38 +0100 |
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Subject: [PATCH 101/237] blscfg: add blscfg module to parse Boot Loader |
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Specification snippets |
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http://www.freedesktop.org/wiki/Specifications/BootLoaderSpec |
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Works like this: |
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insmod blscfg |
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bls_import |
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Done! You should now have menu items for your snippets in place. |
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Signed-off-by: Peter Jones <grub2-owner@fedoraproject.org> |
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--- |
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grub-core/Makefile.core.def | 8 ++ |
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grub-core/commands/blscfg.c | 201 ++++++++++++++++++++++++++++++++++++++++++++ |
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2 files changed, 209 insertions(+) |
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create mode 100644 grub-core/commands/blscfg.c |
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diff --git a/grub-core/Makefile.core.def b/grub-core/Makefile.core.def |
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index ec46506..7bf1c8a 100644 |
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--- a/grub-core/Makefile.core.def |
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+++ b/grub-core/Makefile.core.def |
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@@ -747,6 +747,14 @@ module = { |
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}; |
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module = { |
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+ name = blscfg; |
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+ common = commands/blscfg.c; |
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+ enable = i386_efi; |
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+ enable = x86_64_efi; |
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+ enable = i386_pc; |
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+}; |
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+ |
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+module = { |
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name = boot; |
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common = commands/boot.c; |
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i386_pc = lib/i386/pc/biosnum.c; |
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diff --git a/grub-core/commands/blscfg.c b/grub-core/commands/blscfg.c |
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new file mode 100644 |
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index 0000000..4274aca |
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--- /dev/null |
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+++ b/grub-core/commands/blscfg.c |
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@@ -0,0 +1,201 @@ |
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+/*-*- Mode: C; c-basic-offset: 2; indent-tabs-mode: t -*-*/ |
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+ |
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+/* bls.c - implementation of the boot loader spec */ |
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+ |
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+/* |
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+ * GRUB -- GRand Unified Bootloader |
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+ * |
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+ * GRUB is free software: you can redistribute it and/or modify |
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+ * it under the terms of the GNU General Public License as published by |
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+ * the Free Software Foundation, either version 3 of the License, or |
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+ * (at your option) any later version. |
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+ * |
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+ * GRUB is distributed in the hope that it will be useful, |
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+ * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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+ * GNU General Public License for more details. |
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+ * |
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+ * You should have received a copy of the GNU General Public License |
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+ * along with GRUB. If not, see <http://www.gnu.org/licenses/>. |
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+ */ |
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+ |
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+#include <grub/types.h> |
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+#include <grub/misc.h> |
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+#include <grub/mm.h> |
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+#include <grub/err.h> |
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+#include <grub/dl.h> |
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+#include <grub/extcmd.h> |
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+#include <grub/i18n.h> |
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+#include <grub/fs.h> |
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+#include <grub/env.h> |
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+#include <grub/file.h> |
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+#include <grub/normal.h> |
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+ |
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+GRUB_MOD_LICENSE ("GPLv3+"); |
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+ |
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+#ifdef GRUB_MACHINE_EFI |
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+#define GRUB_LINUX_CMD "linuxefi" |
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+#define GRUB_INITRD_CMD "initrdefi" |
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+#define GRUB_BLS_CONFIG_PATH "/EFI/fedora/loader/entries/" |
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+#define GRUB_BOOT_DEVICE "($boot)" |
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+#else |
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+#define GRUB_LINUX_CMD "linux" |
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+#define GRUB_INITRD_CMD "initrd" |
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+#define GRUB_BLS_CONFIG_PATH "/loader/entries/" |
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+#define GRUB_BOOT_DEVICE "($root)" |
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+#endif |
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+ |
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+static int parse_entry ( |
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+ const char *filename, |
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+ const struct grub_dirhook_info *info __attribute__ ((unused)), |
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+ void *data __attribute__ ((unused))) |
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+{ |
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+ grub_size_t n; |
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+ char *p; |
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+ grub_file_t f = NULL; |
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+ grub_off_t sz; |
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+ char *title = NULL, *options = NULL, *clinux = NULL, *initrd = NULL, *src = NULL; |
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+ const char *args[2] = { NULL, NULL }; |
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+ |
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+ if (filename[0] == '.') |
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+ return 0; |
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+ |
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+ n = grub_strlen (filename); |
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+ if (n <= 5) |
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+ return 0; |
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+ |
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+ if (grub_strcmp (filename + n - 5, ".conf") != 0) |
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+ return 0; |
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+ |
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+ p = grub_xasprintf (GRUB_BLS_CONFIG_PATH "%s", filename); |
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+ |
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+ f = grub_file_open (p); |
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+ if (!f) |
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+ goto finish; |
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+ |
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+ sz = grub_file_size (f); |
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+ if (sz == GRUB_FILE_SIZE_UNKNOWN || sz > 1024*1024) |
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+ goto finish; |
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+ |
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+ for (;;) |
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+ { |
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+ char *buf; |
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+ |
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+ buf = grub_file_getline (f); |
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+ if (!buf) |
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+ break; |
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+ |
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+ if (grub_strncmp (buf, "title ", 6) == 0) |
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+ { |
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+ grub_free (title); |
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+ title = grub_strdup (buf + 6); |
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+ if (!title) |
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+ goto finish; |
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+ } |
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+ else if (grub_strncmp (buf, "options ", 8) == 0) |
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+ { |
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+ grub_free (options); |
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+ options = grub_strdup (buf + 8); |
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+ if (!options) |
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+ goto finish; |
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+ } |
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+ else if (grub_strncmp (buf, "linux ", 6) == 0) |
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+ { |
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+ grub_free (clinux); |
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+ clinux = grub_strdup (buf + 6); |
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+ if (!clinux) |
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+ goto finish; |
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+ } |
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+ else if (grub_strncmp (buf, "initrd ", 7) == 0) |
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+ { |
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+ grub_free (initrd); |
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+ initrd = grub_strdup (buf + 7); |
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+ if (!initrd) |
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+ goto finish; |
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+ } |
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+ |
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+ grub_free(buf); |
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+ } |
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+ |
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+ if (!linux) |
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+ { |
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+ grub_printf ("Skipping file %s with no 'linux' key.", p); |
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+ goto finish; |
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+ } |
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+ |
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+ args[0] = title ? title : filename; |
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+ |
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+ src = grub_xasprintf ("load_video\n" |
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+ "set gfx_payload=keep\n" |
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+ "insmod gzio\n" |
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+ GRUB_LINUX_CMD " %s%s%s%s\n" |
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+ "%s%s%s%s", |
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+ GRUB_BOOT_DEVICE, clinux, options ? " " : "", options ? options : "", |
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+ initrd ? GRUB_INITRD_CMD " " : "", initrd ? GRUB_BOOT_DEVICE : "", initrd ? initrd : "", initrd ? "\n" : ""); |
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+ |
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+ grub_normal_add_menu_entry (1, args, NULL, NULL, "bls", NULL, NULL, src, 0); |
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+ |
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+finish: |
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+ grub_free (p); |
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+ grub_free (title); |
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+ grub_free (options); |
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+ grub_free (clinux); |
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+ grub_free (initrd); |
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+ grub_free (src); |
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+ |
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+ if (f) |
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+ grub_file_close (f); |
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+ |
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+ return 0; |
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+} |
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+ |
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+static grub_err_t |
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+grub_cmd_bls_import (grub_extcmd_context_t ctxt __attribute__ ((unused)), |
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+ int argc __attribute__ ((unused)), |
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+ char **args __attribute__ ((unused))) |
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+{ |
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+ grub_fs_t fs; |
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+ grub_device_t dev; |
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+ static grub_err_t r; |
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+ const char *devid; |
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+ |
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+ devid = grub_env_get ("root"); |
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+ if (!devid) |
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+ return grub_error (GRUB_ERR_FILE_NOT_FOUND, N_("variable `%s' isn't set"), "root"); |
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+ |
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+ dev = grub_device_open (devid); |
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+ if (!dev) |
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+ return grub_errno; |
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+ |
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+ fs = grub_fs_probe (dev); |
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+ if (!fs) |
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+ { |
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+ r = grub_errno; |
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+ goto finish; |
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+ } |
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+ |
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+ r = fs->dir (dev, GRUB_BLS_CONFIG_PATH, parse_entry, NULL); |
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+ |
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+finish: |
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+ if (dev) |
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+ grub_device_close (dev); |
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+ |
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+ return r; |
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+} |
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+ |
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+static grub_extcmd_t cmd; |
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+ |
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+GRUB_MOD_INIT(bls) |
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+{ |
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+ cmd = grub_register_extcmd ("bls_import", |
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+ grub_cmd_bls_import, |
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+ 0, |
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+ NULL, |
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+ N_("Import Boot Loader Specification snippets."), |
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+ NULL); |
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+} |
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+ |
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+GRUB_MOD_FINI(bls) |
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+{ |
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+ grub_unregister_extcmd (cmd); |
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+} |
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-- |
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2.9.3 |
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