mirror of
https://src.fedoraproject.org/rpms/grub2.git
synced 2024-11-28 15:46:53 +00:00
afb0baacd6
The BLS config filenames are guaranteed to be unique, so they can be used as GRUB2 entry id and can also be used to sort the menu entries. Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>
167 lines
4.7 KiB
Diff
167 lines
4.7 KiB
Diff
From 39bb86c661911f06ff40caa842a9babf18f27c8b Mon Sep 17 00:00:00 2001
|
|
From: Javier Martinez Canillas <javierm@redhat.com>
|
|
Date: Fri, 2 Feb 2018 11:36:29 +0100
|
|
Subject: [PATCH 204/250] Enable blscfg command for the emu platform
|
|
|
|
Allow grub-emu to call a blscfg command. This may be useful for platforms
|
|
that don't support GRUB, so grub-emu can be used to parse the BLS configs
|
|
and kexec a new kernel using that information.
|
|
|
|
Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>
|
|
---
|
|
grub-core/Makefile.core.def | 1 +
|
|
grub-core/commands/blscfg.c | 46 +++++++++++++++++++++++++++++++++++----------
|
|
2 files changed, 37 insertions(+), 10 deletions(-)
|
|
|
|
diff --git a/grub-core/Makefile.core.def b/grub-core/Makefile.core.def
|
|
index 0ca0bdad412..420cbf0a024 100644
|
|
--- a/grub-core/Makefile.core.def
|
|
+++ b/grub-core/Makefile.core.def
|
|
@@ -778,6 +778,7 @@ module = {
|
|
common = commands/blscfg.c;
|
|
enable = efi;
|
|
enable = i386_pc;
|
|
+ enable = emu;
|
|
};
|
|
|
|
module = {
|
|
diff --git a/grub-core/commands/blscfg.c b/grub-core/commands/blscfg.c
|
|
index 9ab45631465..e5617c3bc6c 100644
|
|
--- a/grub-core/commands/blscfg.c
|
|
+++ b/grub-core/commands/blscfg.c
|
|
@@ -37,7 +37,12 @@ GRUB_MOD_LICENSE ("GPLv3+");
|
|
#include "loadenv.h"
|
|
|
|
#define GRUB_BLS_CONFIG_PATH "/loader/entries/"
|
|
+#ifdef GRUB_MACHINE_EMU
|
|
+#define GRUB_BOOT_DEVICE "/boot"
|
|
+#else
|
|
#define GRUB_BOOT_DEVICE "($root)"
|
|
+#endif
|
|
+
|
|
#ifdef GRUB_MACHINE_EFI
|
|
#define GRUB_LINUX_CMD "linuxefi"
|
|
#define GRUB_INITRD_CMD "initrdefi"
|
|
@@ -46,6 +51,13 @@ GRUB_MOD_LICENSE ("GPLv3+");
|
|
#define GRUB_INITRD_CMD "initrd"
|
|
#endif
|
|
|
|
+enum
|
|
+ {
|
|
+ PLATFORM_EFI,
|
|
+ PLATFORM_EMU,
|
|
+ PLATFORM_BIOS,
|
|
+ };
|
|
+
|
|
#define grub_free(x) ({grub_dprintf("blscfg", "%s freeing %p\n", __func__, x); grub_free(x); })
|
|
|
|
struct keyval
|
|
@@ -641,7 +653,7 @@ finish:
|
|
struct find_entry_info {
|
|
grub_device_t dev;
|
|
grub_fs_t fs;
|
|
- int efi;
|
|
+ int platform;
|
|
};
|
|
|
|
/*
|
|
@@ -668,13 +680,16 @@ static int find_entry (const char *filename,
|
|
!grub_strcmp (filename, ".."))
|
|
return 0;
|
|
|
|
- if (info->efi && !grub_strcasecmp (filename, "boot"))
|
|
+ if (info->platform == PLATFORM_EFI && !grub_strcasecmp (filename, "boot"))
|
|
return 0;
|
|
|
|
saved_env_buf = grub_malloc (512);
|
|
|
|
// set a default blsdir
|
|
- if (info->efi)
|
|
+ if (info->platform == PLATFORM_EMU)
|
|
+ default_blsdir = grub_xasprintf ("%s%s", GRUB_BOOT_DEVICE,
|
|
+ GRUB_BLS_CONFIG_PATH);
|
|
+ else if (info->platform == PLATFORM_EFI)
|
|
default_blsdir = grub_xasprintf ("/EFI/%s%s", filename,
|
|
GRUB_BLS_CONFIG_PATH);
|
|
else
|
|
@@ -686,7 +701,7 @@ static int find_entry (const char *filename,
|
|
/*
|
|
* try to load a grubenv from /EFI/wherever/grubenv
|
|
*/
|
|
- if (info->efi)
|
|
+ if (info->platform == PLATFORM_EFI)
|
|
grubenv_path = grub_xasprintf ("(%s)/EFI/%s/grubenv", devid, filename);
|
|
else
|
|
grubenv_path = grub_xasprintf ("(%s)/grub2/grubenv", devid);
|
|
@@ -740,7 +755,7 @@ static int find_entry (const char *filename,
|
|
goto finish;
|
|
|
|
grub_dprintf ("blscfg", "blsdir: \"%s\"\n", blsdir);
|
|
- if (blsdir[0] != '/' && info->efi)
|
|
+ if (blsdir[0] != '/' && info->platform == PLATFORM_EFI)
|
|
blsdir = grub_xasprintf ("/EFI/%s/%s/", filename, blsdir);
|
|
else
|
|
blsdir = grub_strdup (blsdir);
|
|
@@ -818,15 +833,21 @@ grub_cmd_blscfg (grub_extcmd_context_t ctxt UNUSED,
|
|
{
|
|
.dev = NULL,
|
|
.fs = NULL,
|
|
- .efi = 0,
|
|
+ .platform = PLATFORM_BIOS,
|
|
};
|
|
|
|
|
|
grub_dprintf ("blscfg", "finding boot\n");
|
|
+
|
|
+#ifdef GRUB_MACHINE_EMU
|
|
+ devid = "host";
|
|
+ grub_env_set ("boot", devid);
|
|
+#else
|
|
devid = grub_env_get ("boot");
|
|
if (!devid)
|
|
return grub_error (GRUB_ERR_FILE_NOT_FOUND,
|
|
N_("variable `%s' isn't set"), "boot");
|
|
+#endif
|
|
|
|
grub_dprintf ("blscfg", "opening %s\n", devid);
|
|
dev = grub_device_open (devid);
|
|
@@ -844,11 +865,16 @@ grub_cmd_blscfg (grub_extcmd_context_t ctxt UNUSED,
|
|
info.dev = dev;
|
|
info.fs = fs;
|
|
#ifdef GRUB_MACHINE_EFI
|
|
- info.efi = 1;
|
|
+ info.platform = PLATFORM_EFI;
|
|
grub_dprintf ("blscfg", "scanning /EFI/\n");
|
|
r = fs->dir (dev, "/EFI/", find_entry, &info);
|
|
+#elif GRUB_MACHINE_EMU
|
|
+ info.platform = PLATFORM_EMU;
|
|
+ grub_dprintf ("blscfg", "scanning %s%s\n", GRUB_BOOT_DEVICE,
|
|
+ GRUB_BLS_CONFIG_PATH);
|
|
+ r = fs->dir (dev, "/boot/loader/",
|
|
+ find_entry, &info);
|
|
#else
|
|
- info.efi = 0;
|
|
grub_dprintf ("blscfg", "scanning %s\n", GRUB_BLS_CONFIG_PATH);
|
|
r = fs->dir (dev, "/", find_entry, &info);
|
|
#endif
|
|
@@ -862,7 +888,7 @@ finish:
|
|
|
|
static grub_extcmd_t cmd;
|
|
|
|
-GRUB_MOD_INIT(bls)
|
|
+GRUB_MOD_INIT(blscfg)
|
|
{
|
|
grub_dprintf("blscfg", "%s got here\n", __func__);
|
|
cmd = grub_register_extcmd ("blscfg",
|
|
@@ -873,7 +899,7 @@ GRUB_MOD_INIT(bls)
|
|
NULL);
|
|
}
|
|
|
|
-GRUB_MOD_FINI(bls)
|
|
+GRUB_MOD_FINI(blscfg)
|
|
{
|
|
grub_unregister_extcmd (cmd);
|
|
}
|
|
--
|
|
2.17.1
|
|
|