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grub2/0380-New-command-nativedisk.patch

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Rebase to upstream snapshot.
2013-06-07 18:03:56 +00:00
From 97f30af3b3b4bbfe51efa1f8bb0cd344280a028e Mon Sep 17 00:00:00 2001
From: Vladimir 'phcoder' Serbinenko <phcoder@gmail.com>
Date: Sun, 28 Apr 2013 15:31:33 +0200
Rebase to upstream, fix a pile of bugs. The usual. Signed-off-by: Peter Jones <pjones@redhat.com>
2013-06-12 19:24:37 +00:00
Subject: [PATCH 380/482] New command `nativedisk'.
Rebase to upstream snapshot.
2013-06-07 18:03:56 +00:00
---
ChangeLog | 4 +
docs/grub.texi | 8 ++
grub-core/Makefile.core.def | 5 +
grub-core/commands/nativedisk.c | 250 ++++++++++++++++++++++++++++++++++++++++
grub-core/kern/dl.c | 46 +++-----
grub-core/normal/main.c | 3 +-
include/grub/dl.h | 29 ++++-
7 files changed, 316 insertions(+), 29 deletions(-)
create mode 100644 grub-core/commands/nativedisk.c
diff --git a/ChangeLog b/ChangeLog
index 835895b..69c7839 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,9 @@
2013-04-28 Vladimir Serbinenko <phcoder@gmail.com>
+ New command `nativedisk'.
+
+2013-04-28 Vladimir Serbinenko <phcoder@gmail.com>
+
* grub-core/io/lzopio.c: Use GRUB_PROPERLY_ALIGNED_ARRAY.
* grub-core/loader/i386/bsd.c: Likewise.
diff --git a/docs/grub.texi b/docs/grub.texi
index 754e191..587c64e 100644
--- a/docs/grub.texi
+++ b/docs/grub.texi
@@ -3411,6 +3411,7 @@ you forget a command, you can run the command @command{help}
* lsfonts:: List loaded fonts
* lsmod:: Show loaded modules
* md5sum:: Compute or check MD5 hash
+* nativedisk:: Switch to native disk drivers
* normal:: Enter normal mode
* normal_exit:: Exit from normal mode
* parttool:: Modify partition table entries
@@ -4035,6 +4036,13 @@ Alias for @code{hashsum --hash md5 arg @dots{}}. See command @command{hashsum}
@end deffn
+@node nativedisk
+@subsection nativedisk
+
+@deffn Command nativedisk
+Switch from firmware disk drivers to native ones.
+@end deffn
+
@node normal
@subsection normal
diff --git a/grub-core/Makefile.core.def b/grub-core/Makefile.core.def
index 7f93723..2e73d89 100644
--- a/grub-core/Makefile.core.def
+++ b/grub-core/Makefile.core.def
@@ -508,6 +508,11 @@ module = {
};
module = {
+ name = nativedisk;
+ common = commands/nativedisk.c;
+};
+
+module = {
name = emupci;
common = bus/emu/pci.c;
common = commands/lspci.c;
diff --git a/grub-core/commands/nativedisk.c b/grub-core/commands/nativedisk.c
new file mode 100644
index 0000000..adb4043
--- /dev/null
+++ b/grub-core/commands/nativedisk.c
@@ -0,0 +1,250 @@
+/*
+ * GRUB -- GRand Unified Bootloader
+ * Copyright (C) 2013 Free Software Foundation, Inc.
+ *
+ * GRUB is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * GRUB is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with GRUB. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <grub/types.h>
+#include <grub/misc.h>
+#include <grub/mm.h>
+#include <grub/err.h>
+#include <grub/dl.h>
+#include <grub/command.h>
+#include <grub/i18n.h>
+#include <grub/device.h>
+#include <grub/mm.h>
+#include <grub/fs.h>
+#include <grub/env.h>
+#include <grub/file.h>
+
+GRUB_MOD_LICENSE ("GPLv3+");
+
+static const char *modnames_def[] = { "pata", "ahci", "usbms", "ohci", "uhci", "ehci" };
+
+static grub_err_t
+get_uuid (const char *name, char **uuid)
+{
+ grub_device_t dev;
+ grub_fs_t fs = 0;
+
+ dev = grub_device_open (name);
+ if (!dev)
+ return grub_errno;
+ if (dev)
+ fs = grub_fs_probe (dev);
+ if (!fs)
+ {
+ grub_device_close (dev);
+ return grub_errno;
+ }
+ if (!fs->uuid || fs->uuid (dev, uuid))
+ {
+ grub_device_close (dev);
+
+ if (!grub_errno)
+ grub_error (GRUB_ERR_NOT_IMPLEMENTED_YET,
+ N_("%s does not support UUIDs"), fs->name);
+
+ return grub_errno;
+ }
+ grub_device_close (dev);
+ return GRUB_ERR_NONE;
+}
+
+struct search_ctx
+{
+ char *root_uuid;
+ char *prefix_uuid;
+ const char *prefix_path;
+ int prefix_found, root_found;
+};
+
+static int
+iterate_device (const char *name, void *data)
+{
+ struct search_ctx *ctx = data;
+ char *cur_uuid;
+
+ if (get_uuid (name, &cur_uuid))
+ {
+ grub_print_error ();
+ return 0;
+ }
+ if (grub_strcasecmp (cur_uuid, ctx->prefix_uuid) == 0)
+ {
+ char *prefix;
+ prefix = grub_xasprintf ("(%s)/%s", name, ctx->prefix_path);
+ grub_env_set ("prefix", prefix);
+ grub_free (prefix);
+ ctx->prefix_found = 1;
+ }
+ if (grub_strcasecmp (cur_uuid, ctx->root_uuid) == 0)
+ {
+ grub_env_set ("root", name);
+ ctx->root_found = 1;
+ }
+ return ctx->prefix_found && ctx->root_found;
+}
+
+static grub_err_t
+grub_cmd_nativedisk (grub_command_t cmd __attribute__ ((unused)),
+ int argc, char **args_in)
+{
+ char *uuid_root = 0, *uuid_prefix, *prefdev = 0;
+ const char *prefix = 0;
+ const char *path_prefix = 0;
+ int mods_loaded = 0;
+ grub_dl_t *mods;
+ struct search_ctx ctx;
+ const char **args;
+ grub_fs_autoload_hook_t saved_autoload;
+ int i;
+
+ if (argc == 0)
+ {
+ argc = ARRAY_SIZE (modnames_def);
+ args = modnames_def;
+ }
+ else
+ args = (const char **) args_in;
+
+ prefix = grub_env_get ("prefix");
+
+ if (! prefix)
+ return grub_error (GRUB_ERR_FILE_NOT_FOUND, N_("variable `%s' isn't set"), "prefix");
+
+ if (prefix)
+ path_prefix = (prefix[0] == '(') ? grub_strchr (prefix, ')') : NULL;
+ if (path_prefix)
+ path_prefix++;
+ else
+ path_prefix = prefix;
+
+ mods = grub_malloc (argc * sizeof (mods[0]));
+ if (!mods)
+ return grub_errno;
+
+ if (get_uuid (NULL, &uuid_root))
+ return grub_errno;
+
+ prefdev = grub_file_get_device_name (prefix);
+ if (grub_errno)
+ {
+ grub_print_error ();
+ prefdev = 0;
+ }
+
+ if (get_uuid (prefdev, &uuid_prefix))
+ {
+ grub_free (uuid_root);
+ return grub_errno;
+ }
+
+ for (mods_loaded = 0; mods_loaded < argc; mods_loaded++)
+ {
+ char *filename;
+ grub_dl_t mod;
+ grub_file_t file = NULL;
+ grub_ssize_t size;
+ void *core = 0;
+
+ mod = grub_dl_get (args[mods_loaded]);
+ if (mod)
+ {
+ mods[mods_loaded] = 0;
+ continue;
+ }
+
+ filename = grub_xasprintf ("%s/" GRUB_TARGET_CPU "-" GRUB_PLATFORM "/%s.mod",
+ prefix, args[mods_loaded]);
+ if (! filename)
+ goto fail;
+
+ file = grub_file_open (filename);
+ grub_free (filename);
+ if (! file)
+ goto fail;
+
+ size = grub_file_size (file);
+ core = grub_malloc (size);
+ if (! core)
+ {
+ grub_file_close (file);
+ goto fail;
+ }
+
+ if (grub_file_read (file, core, size) != (grub_ssize_t) size)
+ {
+ grub_file_close (file);
+ grub_free (core);
+ goto fail;
+ }
+
+ grub_file_close (file);
+
+ mods[mods_loaded] = grub_dl_load_core_noinit (core, size);
+ if (! mods[mods_loaded])
+ goto fail;
+ }
+
+ for (i = 0; i < argc; i++)
+ if (mods[i])
+ grub_dl_init (mods[i]);
+
+ /* No need to autoload FS since obviously we already have the necessary fs modules. */
+ saved_autoload = grub_fs_autoload_hook;
+ grub_fs_autoload_hook = 0;
+
+ ctx.root_uuid = uuid_root;
+ ctx.prefix_uuid = uuid_prefix;
+ ctx.prefix_path = path_prefix;
+ ctx.prefix_found = 0;
+ ctx.root_found = 0;
+
+ /* FIXME: try to guess the correct values. */
+ grub_device_iterate (iterate_device, &ctx);
+
+ grub_fs_autoload_hook = saved_autoload;
+
+ grub_free (uuid_root);
+ grub_free (uuid_prefix);
+
+ return GRUB_ERR_NONE;
+
+ fail:
+ grub_free (uuid_root);
+ grub_free (uuid_prefix);
+
+ for (i = 0; i < mods_loaded; i++)
+ if (mods[i])
+ {
+ mods[i]->fini = 0;
+ grub_dl_unload (mods[i]);
+ }
+ return grub_errno;
+}
+
+static grub_command_t cmd;
+
+GRUB_MOD_INIT(nativedisk)
+{
+ cmd = grub_register_command ("nativedisk", grub_cmd_nativedisk, "[MODULE1 MODULE2 ...]",
+ N_("Switch to native disk drivers. If no modules are specified default set (pata,ahci,usbms,ohci,uhci,ehci) is used"));
+}
+
+GRUB_MOD_FINI(nativedisk)
+{
+ grub_unregister_command (cmd);
+}
diff --git a/grub-core/kern/dl.c b/grub-core/kern/dl.c
index 641146d..6c086ad 100644
--- a/grub-core/kern/dl.c
+++ b/grub-core/kern/dl.c
@@ -51,6 +51,7 @@ grub_dl_t grub_dl_head = 0;
grub_err_t
grub_dl_add (grub_dl_t mod);
+/* Keep global so that GDB scripts work. */
grub_err_t
grub_dl_add (grub_dl_t mod)
{
@@ -58,9 +59,6 @@ grub_dl_add (grub_dl_t mod)
return grub_error (GRUB_ERR_BAD_MODULE,
"`%s' is already loaded", mod->name);
- mod->next = grub_dl_head;
- grub_dl_head = mod;
-
return GRUB_ERR_NONE;
}
@@ -77,18 +75,6 @@ grub_dl_remove (grub_dl_t mod)
}
}
-grub_dl_t
-grub_dl_get (const char *name)
-{
- grub_dl_t l;
-
- for (l = grub_dl_head; l; l = l->next)
- if (grub_strcmp (name, l->name) == 0)
- return l;
-
- return 0;
-}
-
struct grub_symbol
@@ -447,13 +433,6 @@ grub_dl_resolve_symbols (grub_dl_t mod, Elf_Ehdr *e)
return GRUB_ERR_NONE;
}
-static void
-grub_dl_call_init (grub_dl_t mod)
-{
- if (mod->init)
- (mod->init) (mod);
-}
-
/* Me, Vladimir Serbinenko, hereby I add this module check as per new
GNU module policy. Note that this license check is informative only.
Modules have to be licensed under GPLv3 or GPLv3+ (optionally
@@ -595,7 +574,7 @@ grub_dl_flush_cache (grub_dl_t mod)
/* Load a module from core memory. */
grub_dl_t
-grub_dl_load_core (void *addr, grub_size_t size)
+grub_dl_load_core_noinit (void *addr, grub_size_t size)
{
Elf_Ehdr *e;
grub_dl_t mod;
@@ -651,10 +630,6 @@ grub_dl_load_core (void *addr, grub_size_t size)
grub_dprintf ("modules", "module name: %s\n", mod->name);
grub_dprintf ("modules", "init function: %p\n", mod->init);
- grub_boot_time ("Initing module %s", mod->name);
- grub_dl_call_init (mod);
- grub_boot_time ("Module %s inited", mod->name);
-
if (grub_dl_add (mod))
{
grub_dl_unload (mod);
@@ -664,6 +639,23 @@ grub_dl_load_core (void *addr, grub_size_t size)
return mod;
}
+grub_dl_t
+grub_dl_load_core (void *addr, grub_size_t size)
+{
+ grub_dl_t mod;
+
+ mod = grub_dl_load_core_noinit (addr, size);
+
+ if (!mod)
+ return NULL;
+
+ grub_boot_time ("Initing module %s", mod->name);
+ grub_dl_init (mod);
+ grub_boot_time ("Module %s inited", mod->name);
+
+ return mod;
+}
+
/* Load a module from the file FILENAME. */
grub_dl_t
grub_dl_load_file (const char *filename)
diff --git a/grub-core/normal/main.c b/grub-core/normal/main.c
index 2f203dd..759e0a4 100644
--- a/grub-core/normal/main.c
+++ b/grub-core/normal/main.c
@@ -506,7 +506,8 @@ static void (*grub_xputs_saved) (const char *str);
static const char *features[] = {
"feature_chainloader_bpb", "feature_ntldr", "feature_platform_search_hint",
"feature_default_font_path", "feature_all_video_module",
- "feature_menuentry_id", "feature_menuentry_options", "feature_200_final"
+ "feature_menuentry_id", "feature_menuentry_options", "feature_200_final",
+ "feature_nativedisk_cmd"
};
GRUB_MOD_INIT(normal)
diff --git a/include/grub/dl.h b/include/grub/dl.h
index 3119978..f34b5a1 100644
--- a/include/grub/dl.h
+++ b/include/grub/dl.h
@@ -25,6 +25,7 @@
#include <grub/err.h>
#include <grub/types.h>
#include <grub/elf.h>
+#include <grub/list.h>
#endif
/*
@@ -181,15 +182,41 @@ typedef struct grub_dl *grub_dl_t;
grub_dl_t grub_dl_load_file (const char *filename);
grub_dl_t EXPORT_FUNC(grub_dl_load) (const char *name);
grub_dl_t grub_dl_load_core (void *addr, grub_size_t size);
+grub_dl_t EXPORT_FUNC(grub_dl_load_core_noinit) (void *addr, grub_size_t size);
int EXPORT_FUNC(grub_dl_unload) (grub_dl_t mod);
void grub_dl_unload_unneeded (void);
int EXPORT_FUNC(grub_dl_ref) (grub_dl_t mod);
int EXPORT_FUNC(grub_dl_unref) (grub_dl_t mod);
extern grub_dl_t EXPORT_VAR(grub_dl_head);
+#ifndef GRUB_UTIL
+
#define FOR_DL_MODULES(var) FOR_LIST_ELEMENTS ((var), (grub_dl_head))
-grub_dl_t EXPORT_FUNC(grub_dl_get) (const char *name);
+static inline void
+grub_dl_init (grub_dl_t mod)
+{
+ if (mod->init)
+ (mod->init) (mod);
+
+ mod->next = grub_dl_head;
+ grub_dl_head = mod;
+}
+
+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
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