Blame SOURCES/0160-Use-boot-loader-entries-as-BLS-directory-path-also-o.patch

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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Javier Martinez Canillas <javierm@redhat.com>
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Date: Mon, 25 Jun 2018 11:45:33 +0200
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Subject: [PATCH] Use /boot/loader/entries as BLS directory path also on EFI
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 systems
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For EFI systems, the BLS fragments were stored in the EFI System Partition
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(ESP) while in non-EFI systems it was stored in /boot.
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For consistency, it's better to always store the BLS fragments in the same
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path regardless of the firmware interface used.
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Also change the grub2-switch-to-blscfg script default BLS directory.
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Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>
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---
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 grub-core/commands/blscfg.c   | 48 ++++++++++++++++++++++++++++++++-----------
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 util/grub-switch-to-blscfg.in |  4 ++--
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 2 files changed, 38 insertions(+), 14 deletions(-)
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diff --git a/grub-core/commands/blscfg.c b/grub-core/commands/blscfg.c
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index 831cdcacc..70939a818 100644
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--- a/grub-core/commands/blscfg.c
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+++ b/grub-core/commands/blscfg.c
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@@ -381,9 +381,14 @@ static int bls_cmp(const void *p0, const void *p1, void *state UNUSED)
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   return rc;
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 }
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+struct read_entry_info {
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+  const char *devid;
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+  const char *dirname;
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+};
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+
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 static int read_entry (
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     const char *filename,
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-    const struct grub_dirhook_info *info UNUSED,
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+    const struct grub_dirhook_info *dirhook_info UNUSED,
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     void *data)
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 {
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   grub_size_t n;
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@@ -391,8 +396,7 @@ static int read_entry (
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   grub_file_t f = NULL;
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   grub_off_t sz;
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   struct bls_entry *entry;
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-  const char *dirname= (const char *)data;
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-  const char *devid = grub_env_get ("boot");
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+  struct read_entry_info *info = (struct read_entry_info *)data;
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   grub_dprintf ("blscfg", "filename: \"%s\"\n", filename);
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@@ -406,7 +410,7 @@ static int read_entry (
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   if (grub_strcmp (filename + n - 5, ".conf") != 0)
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     return 0;
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-  p = grub_xasprintf ("(%s)%s/%s", devid, dirname, filename);
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+  p = grub_xasprintf ("(%s)%s/%s", info->devid, info->dirname, filename);
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   f = grub_file_open (p);
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   if (!f)
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@@ -655,10 +659,13 @@ static int find_entry (const char *filename,
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 		       void *data)
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 {
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   struct find_entry_info *info = (struct find_entry_info *)data;
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+  struct read_entry_info read_entry_info;
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   grub_file_t f = NULL;
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   char *grubenv_path = NULL;
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   grub_envblk_t env = NULL;
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   char *default_blsdir = NULL;
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+  grub_fs_t blsdir_fs = NULL;
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+  grub_device_t blsdir_dev = NULL;
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   const char *blsdir = NULL;
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   char *saved_env_buf = NULL;
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   int r = 0;
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@@ -678,9 +685,6 @@ static int find_entry (const char *filename,
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   if (info->platform == PLATFORM_EMU)
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     default_blsdir = grub_xasprintf ("%s%s", GRUB_BOOT_DEVICE,
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 				     GRUB_BLS_CONFIG_PATH);
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-  else if (info->platform == PLATFORM_EFI)
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-    default_blsdir = grub_xasprintf ("/EFI/%s%s", filename,
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-				     GRUB_BLS_CONFIG_PATH);
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   else
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     default_blsdir = grub_xasprintf ("%s", GRUB_BLS_CONFIG_PATH);
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@@ -744,16 +748,33 @@ static int find_entry (const char *filename,
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     goto finish;
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   grub_dprintf ("blscfg", "blsdir: \"%s\"\n", blsdir);
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-  if (blsdir[0] != '/' && info->platform == PLATFORM_EFI)
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-    blsdir = grub_xasprintf ("/EFI/%s/%s/", filename, blsdir);
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-  else
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-    blsdir = grub_strdup (blsdir);
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+  blsdir = grub_strdup (blsdir);
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   if (!blsdir)
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     goto finish;
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   grub_dprintf ("blscfg", "blsdir: \"%s\"\n", blsdir);
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-  r = info->fs->dir (info->dev, blsdir, read_entry, (char *)blsdir);
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+  if (info->platform == PLATFORM_EFI) {
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+    read_entry_info.devid = grub_env_get ("root");
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+    if (!read_entry_info.devid)
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+      goto finish;
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+
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+    blsdir_dev = grub_device_open (read_entry_info.devid);
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+    if (!blsdir_dev)
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+      goto finish;
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+
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+    blsdir_fs = grub_fs_probe (blsdir_dev);
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+    if (!blsdir_fs)
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+      goto finish;
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+
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+  } else {
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+    read_entry_info.devid = devid;
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+    blsdir_dev = info->dev;
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+    blsdir_fs = info->fs;
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+  }
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+  read_entry_info.dirname = blsdir;
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+
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+  r = blsdir_fs->dir (blsdir_dev, blsdir, read_entry, &read_entry_info);
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   if (r != 0) {
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       grub_dprintf ("blscfg", "read_entry returned error\n");
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       grub_err_t e;
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@@ -773,6 +794,9 @@ static int find_entry (const char *filename,
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   for (r = 0; r < nentries; r++)
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       bls_free_entry (entries[r]);
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 finish:
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+  if (info->platform == PLATFORM_EFI && blsdir_dev)
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+    grub_device_close (blsdir_dev);
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+
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   nentries = 0;
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   grub_free (entries);
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diff --git a/util/grub-switch-to-blscfg.in b/util/grub-switch-to-blscfg.in
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index 884cf45b1..2f37a1f74 100644
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--- a/util/grub-switch-to-blscfg.in
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+++ b/util/grub-switch-to-blscfg.in
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@@ -44,13 +44,13 @@ EFIDIR=$(grep ^ID= /etc/os-release | sed -e 's/^ID=//' -e 's/rhel/redhat/')
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 if [ -d /sys/firmware/efi/efivars/ ]; then
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     startlink=/etc/grub2-efi.cfg
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     grubdir=`echo "/@bootdirname@/efi/EFI/${EFIDIR}/" | sed 's,//*,/,g'`
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-    blsdir=`echo "/@bootdirname@/efi/EFI/${EFIDIR}/loader/entries" | sed 's,//*,/,g'`
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 else
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     startlink=/etc/grub2.cfg
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     grubdir=`echo "/@bootdirname@/@grubdirname@" | sed 's,//*,/,g'`
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-    blsdir=`echo "/@bootdirname@/loader/entries" | sed 's,//*,/,g'`
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 fi
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+blsdir=`echo "/@bootdirname@/loader/entries" | sed 's,//*,/,g'`
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+
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 backupsuffix=.bak
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 export TEXTDOMAIN=@PACKAGE@