500 lines
13 KiB
Diff
500 lines
13 KiB
Diff
From 97f30af3b3b4bbfe51efa1f8bb0cd344280a028e Mon Sep 17 00:00:00 2001
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From: Vladimir 'phcoder' Serbinenko <phcoder@gmail.com>
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Date: Sun, 28 Apr 2013 15:31:33 +0200
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Subject: [PATCH 380/471] New command `nativedisk'.
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---
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ChangeLog | 4 +
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docs/grub.texi | 8 ++
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grub-core/Makefile.core.def | 5 +
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grub-core/commands/nativedisk.c | 250 ++++++++++++++++++++++++++++++++++++++++
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grub-core/kern/dl.c | 46 +++-----
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grub-core/normal/main.c | 3 +-
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include/grub/dl.h | 29 ++++-
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7 files changed, 316 insertions(+), 29 deletions(-)
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create mode 100644 grub-core/commands/nativedisk.c
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diff --git a/ChangeLog b/ChangeLog
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index 835895b..69c7839 100644
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--- a/ChangeLog
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+++ b/ChangeLog
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@@ -1,5 +1,9 @@
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2013-04-28 Vladimir Serbinenko <phcoder@gmail.com>
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+ New command `nativedisk'.
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+
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+2013-04-28 Vladimir Serbinenko <phcoder@gmail.com>
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+
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* grub-core/io/lzopio.c: Use GRUB_PROPERLY_ALIGNED_ARRAY.
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* grub-core/loader/i386/bsd.c: Likewise.
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diff --git a/docs/grub.texi b/docs/grub.texi
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index 754e191..587c64e 100644
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--- a/docs/grub.texi
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+++ b/docs/grub.texi
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@@ -3411,6 +3411,7 @@ you forget a command, you can run the command @command{help}
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* lsfonts:: List loaded fonts
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* lsmod:: Show loaded modules
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* md5sum:: Compute or check MD5 hash
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+* nativedisk:: Switch to native disk drivers
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* normal:: Enter normal mode
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* normal_exit:: Exit from normal mode
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* parttool:: Modify partition table entries
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@@ -4035,6 +4036,13 @@ Alias for @code{hashsum --hash md5 arg @dots{}}. See command @command{hashsum}
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@end deffn
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+@node nativedisk
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+@subsection nativedisk
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+
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+@deffn Command nativedisk
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+Switch from firmware disk drivers to native ones.
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+@end deffn
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+
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@node normal
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@subsection normal
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diff --git a/grub-core/Makefile.core.def b/grub-core/Makefile.core.def
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index 7f93723..2e73d89 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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@@ -508,6 +508,11 @@ module = {
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};
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module = {
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+ name = nativedisk;
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+ common = commands/nativedisk.c;
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+};
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+
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+module = {
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name = emupci;
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common = bus/emu/pci.c;
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common = commands/lspci.c;
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diff --git a/grub-core/commands/nativedisk.c b/grub-core/commands/nativedisk.c
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new file mode 100644
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index 0000000..adb4043
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--- /dev/null
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+++ b/grub-core/commands/nativedisk.c
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@@ -0,0 +1,250 @@
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+/*
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+ * GRUB -- GRand Unified Bootloader
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+ * Copyright (C) 2013 Free Software Foundation, Inc.
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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/command.h>
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+#include <grub/i18n.h>
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+#include <grub/device.h>
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+#include <grub/mm.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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+
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+GRUB_MOD_LICENSE ("GPLv3+");
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+
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+static const char *modnames_def[] = { "pata", "ahci", "usbms", "ohci", "uhci", "ehci" };
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+
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+static grub_err_t
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+get_uuid (const char *name, char **uuid)
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+{
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+ grub_device_t dev;
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+ grub_fs_t fs = 0;
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+
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+ dev = grub_device_open (name);
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+ if (!dev)
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+ return grub_errno;
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+ if (dev)
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+ fs = grub_fs_probe (dev);
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+ if (!fs)
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+ {
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+ grub_device_close (dev);
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+ return grub_errno;
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+ }
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+ if (!fs->uuid || fs->uuid (dev, uuid))
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+ {
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+ grub_device_close (dev);
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+
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+ if (!grub_errno)
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+ grub_error (GRUB_ERR_NOT_IMPLEMENTED_YET,
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+ N_("%s does not support UUIDs"), fs->name);
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+
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+ return grub_errno;
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+ }
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+ grub_device_close (dev);
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+ return GRUB_ERR_NONE;
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+}
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+
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+struct search_ctx
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+{
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+ char *root_uuid;
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+ char *prefix_uuid;
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+ const char *prefix_path;
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+ int prefix_found, root_found;
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+};
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+
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+static int
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+iterate_device (const char *name, void *data)
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+{
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+ struct search_ctx *ctx = data;
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+ char *cur_uuid;
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+
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+ if (get_uuid (name, &cur_uuid))
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+ {
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+ grub_print_error ();
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+ return 0;
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+ }
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+ if (grub_strcasecmp (cur_uuid, ctx->prefix_uuid) == 0)
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+ {
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+ char *prefix;
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+ prefix = grub_xasprintf ("(%s)/%s", name, ctx->prefix_path);
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+ grub_env_set ("prefix", prefix);
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+ grub_free (prefix);
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+ ctx->prefix_found = 1;
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+ }
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+ if (grub_strcasecmp (cur_uuid, ctx->root_uuid) == 0)
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+ {
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+ grub_env_set ("root", name);
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+ ctx->root_found = 1;
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+ }
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+ return ctx->prefix_found && ctx->root_found;
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+}
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+
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+static grub_err_t
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+grub_cmd_nativedisk (grub_command_t cmd __attribute__ ((unused)),
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+ int argc, char **args_in)
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+{
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+ char *uuid_root = 0, *uuid_prefix, *prefdev = 0;
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+ const char *prefix = 0;
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+ const char *path_prefix = 0;
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+ int mods_loaded = 0;
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+ grub_dl_t *mods;
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+ struct search_ctx ctx;
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+ const char **args;
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+ grub_fs_autoload_hook_t saved_autoload;
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+ int i;
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+
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+ if (argc == 0)
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+ {
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+ argc = ARRAY_SIZE (modnames_def);
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+ args = modnames_def;
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+ }
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+ else
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+ args = (const char **) args_in;
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+
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+ prefix = grub_env_get ("prefix");
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+
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+ if (! prefix)
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+ return grub_error (GRUB_ERR_FILE_NOT_FOUND, N_("variable `%s' isn't set"), "prefix");
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+
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+ if (prefix)
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+ path_prefix = (prefix[0] == '(') ? grub_strchr (prefix, ')') : NULL;
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+ if (path_prefix)
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+ path_prefix++;
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+ else
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+ path_prefix = prefix;
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+
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+ mods = grub_malloc (argc * sizeof (mods[0]));
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+ if (!mods)
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+ return grub_errno;
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+
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+ if (get_uuid (NULL, &uuid_root))
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+ return grub_errno;
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+
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+ prefdev = grub_file_get_device_name (prefix);
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+ if (grub_errno)
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+ {
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+ grub_print_error ();
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+ prefdev = 0;
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+ }
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+
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+ if (get_uuid (prefdev, &uuid_prefix))
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+ {
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+ grub_free (uuid_root);
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+ return grub_errno;
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+ }
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+
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+ for (mods_loaded = 0; mods_loaded < argc; mods_loaded++)
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+ {
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+ char *filename;
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+ grub_dl_t mod;
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+ grub_file_t file = NULL;
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+ grub_ssize_t size;
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+ void *core = 0;
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+
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+ mod = grub_dl_get (args[mods_loaded]);
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+ if (mod)
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+ {
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+ mods[mods_loaded] = 0;
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+ continue;
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+ }
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+
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+ filename = grub_xasprintf ("%s/" GRUB_TARGET_CPU "-" GRUB_PLATFORM "/%s.mod",
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+ prefix, args[mods_loaded]);
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+ if (! filename)
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+ goto fail;
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+
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+ file = grub_file_open (filename);
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+ grub_free (filename);
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+ if (! file)
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+ goto fail;
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+
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+ size = grub_file_size (file);
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+ core = grub_malloc (size);
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+ if (! core)
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+ {
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+ grub_file_close (file);
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+ goto fail;
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+ }
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+
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+ if (grub_file_read (file, core, size) != (grub_ssize_t) size)
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+ {
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+ grub_file_close (file);
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+ grub_free (core);
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+ goto fail;
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+ }
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+
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+ grub_file_close (file);
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+
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+ mods[mods_loaded] = grub_dl_load_core_noinit (core, size);
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+ if (! mods[mods_loaded])
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+ goto fail;
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+ }
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+
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+ for (i = 0; i < argc; i++)
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+ if (mods[i])
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+ grub_dl_init (mods[i]);
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+
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+ /* No need to autoload FS since obviously we already have the necessary fs modules. */
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+ saved_autoload = grub_fs_autoload_hook;
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+ grub_fs_autoload_hook = 0;
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+
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+ ctx.root_uuid = uuid_root;
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+ ctx.prefix_uuid = uuid_prefix;
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+ ctx.prefix_path = path_prefix;
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+ ctx.prefix_found = 0;
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+ ctx.root_found = 0;
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+
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+ /* FIXME: try to guess the correct values. */
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+ grub_device_iterate (iterate_device, &ctx);
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+
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+ grub_fs_autoload_hook = saved_autoload;
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+
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+ grub_free (uuid_root);
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+ grub_free (uuid_prefix);
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+
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+ return GRUB_ERR_NONE;
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+
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+ fail:
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+ grub_free (uuid_root);
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+ grub_free (uuid_prefix);
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+
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+ for (i = 0; i < mods_loaded; i++)
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+ if (mods[i])
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+ {
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+ mods[i]->fini = 0;
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+ grub_dl_unload (mods[i]);
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+ }
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+ return grub_errno;
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+}
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+
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+static grub_command_t cmd;
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+
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+GRUB_MOD_INIT(nativedisk)
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+{
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+ cmd = grub_register_command ("nativedisk", grub_cmd_nativedisk, "[MODULE1 MODULE2 ...]",
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+ N_("Switch to native disk drivers. If no modules are specified default set (pata,ahci,usbms,ohci,uhci,ehci) is used"));
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+}
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+
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+GRUB_MOD_FINI(nativedisk)
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+{
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+ grub_unregister_command (cmd);
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+}
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diff --git a/grub-core/kern/dl.c b/grub-core/kern/dl.c
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index 641146d..6c086ad 100644
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--- a/grub-core/kern/dl.c
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+++ b/grub-core/kern/dl.c
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@@ -51,6 +51,7 @@ grub_dl_t grub_dl_head = 0;
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grub_err_t
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grub_dl_add (grub_dl_t mod);
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+/* Keep global so that GDB scripts work. */
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grub_err_t
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grub_dl_add (grub_dl_t mod)
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{
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@@ -58,9 +59,6 @@ grub_dl_add (grub_dl_t mod)
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return grub_error (GRUB_ERR_BAD_MODULE,
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"`%s' is already loaded", mod->name);
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- mod->next = grub_dl_head;
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- grub_dl_head = mod;
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-
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return GRUB_ERR_NONE;
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}
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@@ -77,18 +75,6 @@ grub_dl_remove (grub_dl_t mod)
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}
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}
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-grub_dl_t
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-grub_dl_get (const char *name)
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-{
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- grub_dl_t l;
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-
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- for (l = grub_dl_head; l; l = l->next)
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- if (grub_strcmp (name, l->name) == 0)
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- return l;
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-
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- return 0;
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-}
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-
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struct grub_symbol
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@@ -447,13 +433,6 @@ grub_dl_resolve_symbols (grub_dl_t mod, Elf_Ehdr *e)
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return GRUB_ERR_NONE;
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}
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-static void
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-grub_dl_call_init (grub_dl_t mod)
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-{
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- if (mod->init)
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- (mod->init) (mod);
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-}
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-
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/* Me, Vladimir Serbinenko, hereby I add this module check as per new
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GNU module policy. Note that this license check is informative only.
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Modules have to be licensed under GPLv3 or GPLv3+ (optionally
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@@ -595,7 +574,7 @@ grub_dl_flush_cache (grub_dl_t mod)
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/* Load a module from core memory. */
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grub_dl_t
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-grub_dl_load_core (void *addr, grub_size_t size)
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+grub_dl_load_core_noinit (void *addr, grub_size_t size)
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{
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Elf_Ehdr *e;
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grub_dl_t mod;
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@@ -651,10 +630,6 @@ grub_dl_load_core (void *addr, grub_size_t size)
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grub_dprintf ("modules", "module name: %s\n", mod->name);
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grub_dprintf ("modules", "init function: %p\n", mod->init);
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- grub_boot_time ("Initing module %s", mod->name);
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- grub_dl_call_init (mod);
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- grub_boot_time ("Module %s inited", mod->name);
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-
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if (grub_dl_add (mod))
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{
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grub_dl_unload (mod);
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@@ -664,6 +639,23 @@ grub_dl_load_core (void *addr, grub_size_t size)
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return mod;
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}
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+grub_dl_t
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+grub_dl_load_core (void *addr, grub_size_t size)
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+{
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+ grub_dl_t mod;
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+
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+ mod = grub_dl_load_core_noinit (addr, size);
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+
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+ if (!mod)
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+ return NULL;
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+
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+ grub_boot_time ("Initing module %s", mod->name);
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+ grub_dl_init (mod);
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+ grub_boot_time ("Module %s inited", mod->name);
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+
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+ return mod;
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+}
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+
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/* Load a module from the file FILENAME. */
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grub_dl_t
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grub_dl_load_file (const char *filename)
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diff --git a/grub-core/normal/main.c b/grub-core/normal/main.c
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index 2f203dd..759e0a4 100644
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--- a/grub-core/normal/main.c
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+++ b/grub-core/normal/main.c
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@@ -506,7 +506,8 @@ static void (*grub_xputs_saved) (const char *str);
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static const char *features[] = {
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"feature_chainloader_bpb", "feature_ntldr", "feature_platform_search_hint",
|
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"feature_default_font_path", "feature_all_video_module",
|
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- "feature_menuentry_id", "feature_menuentry_options", "feature_200_final"
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+ "feature_menuentry_id", "feature_menuentry_options", "feature_200_final",
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+ "feature_nativedisk_cmd"
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};
|
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|
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GRUB_MOD_INIT(normal)
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diff --git a/include/grub/dl.h b/include/grub/dl.h
|
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index 3119978..f34b5a1 100644
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--- a/include/grub/dl.h
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+++ b/include/grub/dl.h
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@@ -25,6 +25,7 @@
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#include <grub/err.h>
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#include <grub/types.h>
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#include <grub/elf.h>
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+#include <grub/list.h>
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#endif
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/*
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@@ -181,15 +182,41 @@ typedef struct grub_dl *grub_dl_t;
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grub_dl_t grub_dl_load_file (const char *filename);
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grub_dl_t EXPORT_FUNC(grub_dl_load) (const char *name);
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grub_dl_t grub_dl_load_core (void *addr, grub_size_t size);
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+grub_dl_t EXPORT_FUNC(grub_dl_load_core_noinit) (void *addr, grub_size_t size);
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int EXPORT_FUNC(grub_dl_unload) (grub_dl_t mod);
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void grub_dl_unload_unneeded (void);
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int EXPORT_FUNC(grub_dl_ref) (grub_dl_t mod);
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int EXPORT_FUNC(grub_dl_unref) (grub_dl_t mod);
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extern grub_dl_t EXPORT_VAR(grub_dl_head);
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+#ifndef GRUB_UTIL
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+
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#define FOR_DL_MODULES(var) FOR_LIST_ELEMENTS ((var), (grub_dl_head))
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-grub_dl_t EXPORT_FUNC(grub_dl_get) (const char *name);
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+static inline void
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+grub_dl_init (grub_dl_t mod)
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+{
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+ if (mod->init)
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+ (mod->init) (mod);
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+
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+ mod->next = grub_dl_head;
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+ grub_dl_head = mod;
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+}
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+
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+static inline grub_dl_t
|
||
+grub_dl_get (const char *name)
|
||
+{
|
||
+ grub_dl_t l;
|
||
+
|
||
+ FOR_DL_MODULES(l)
|
||
+ if (grub_strcmp (name, l->name) == 0)
|
||
+ return l;
|
||
+
|
||
+ return 0;
|
||
+}
|
||
+
|
||
+#endif
|
||
+
|
||
grub_err_t grub_dl_register_symbol (const char *name, void *addr,
|
||
int isfunc, grub_dl_t mod);
|
||
|
||
--
|
||
1.8.2.1
|
||
|