Make grub-install check for errors from efibootmgr

Code is currently ignoring errors from efibootmgr, giving users
clearly bogus output like:

        Setting up grub-efi-amd64 (2.02~beta3-4) ...
        Installing for x86_64-efi platform.
        Could not delete variable: No space left on device
        Could not prepare Boot variable: No space left on device
        Installation finished. No error reported.

and then potentially unbootable systems. If efibootmgr fails, grub-install
should know that and report it!

We've been using similar patch in Debian now for some time, with no ill effects.

Signed-off-by: Steve McIntyre <93sam@debian.org>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>

diff --git a/grub-core/osdep/unix/platform.c b/grub-core/osdep/unix/platform.c
index a3fcfca..ca448bc 100644 (file)
--- a/grub-core/osdep/unix/platform.c
+++ b/grub-core/osdep/unix/platform.c
@@ -78,19 +78,20 @@ get_ofpathname (const char *dev)
                   dev);
 }
 
-static void
+static int
 grub_install_remove_efi_entries_by_distributor (const char *efi_distributor)
 {
   int fd;
   pid_t pid = grub_util_exec_pipe ((const char * []){ "efibootmgr", NULL }, &fd);
   char *line = NULL;
   size_t len = 0;
+  int rc;
 
   if (!pid)
     {
       grub_util_warn (_("Unable to open stream from %s: %s"),
                      "efibootmgr", strerror (errno));
-      return;
+      return errno;
     }
 
   FILE *fp = fdopen (fd, "r");
@@ -98,7 +99,7 @@ grub_install_remove_efi_entries_by_distributor (const char *efi_distributor)
     {
       grub_util_warn (_("Unable to open stream from %s: %s"),
                      "efibootmgr", strerror (errno));
-      return;
+      return errno;
     }
 
   line = xmalloc (80);
@@ -119,23 +120,25 @@ grub_install_remove_efi_entries_by_distributor (const char *efi_distributor)
       bootnum = line + sizeof ("Boot") - 1;
       bootnum[4] = '\0';
       if (!verbosity)
-       grub_util_exec ((const char * []){ "efibootmgr", "-q",
+       rc = grub_util_exec ((const char * []){ "efibootmgr", "-q",
              "-b", bootnum,  "-B", NULL });
       else
-       grub_util_exec ((const char * []){ "efibootmgr",
+       rc = grub_util_exec ((const char * []){ "efibootmgr",
              "-b", bootnum, "-B", NULL });
     }
 
   free (line);
+  return rc;
 }
 
-void
+int
 grub_install_register_efi (grub_device_t efidir_grub_dev,
                           const char *efifile_path,
                           const char *efi_distributor)
 {
   const char * efidir_disk;
   int efidir_part;
+  int ret;
   efidir_disk = grub_util_biosdisk_get_osdev (efidir_grub_dev->disk);
   efidir_part = efidir_grub_dev->disk->partition ? efidir_grub_dev->disk->partition->number + 1 : 1;
 
@@ -151,23 +154,26 @@ grub_install_register_efi (grub_device_t efidir_grub_dev,
   grub_util_exec ((const char * []){ "modprobe", "-q", "efivars", NULL });
 #endif
   /* Delete old entries from the same distributor.  */
-  grub_install_remove_efi_entries_by_distributor (efi_distributor);
+  ret = grub_install_remove_efi_entries_by_distributor (efi_distributor);
+  if (ret)
+    return ret;
 
   char *efidir_part_str = xasprintf ("%d", efidir_part);
 
   if (!verbosity)
-    grub_util_exec ((const char * []){ "efibootmgr", "-q",
+    ret = grub_util_exec ((const char * []){ "efibootmgr", "-q",
          "-c", "-d", efidir_disk,
          "-p", efidir_part_str, "-w",
          "-L", efi_distributor, "-l", 
          efifile_path, NULL });
   else
-    grub_util_exec ((const char * []){ "efibootmgr",
+    ret = grub_util_exec ((const char * []){ "efibootmgr",
          "-c", "-d", efidir_disk,
          "-p", efidir_part_str, "-w",
          "-L", efi_distributor, "-l", 
          efifile_path, NULL });
   free (efidir_part_str);
+  return ret;
 }
 
 void

diff --git a/include/grub/util/install.h b/include/grub/util/install.h
index 5910b0c..0dba8b6 100644 (file)
--- a/include/grub/util/install.h
+++ b/include/grub/util/install.h
@@ -210,7 +210,7 @@ grub_install_create_envblk_file (const char *name);
 const char *
 grub_install_get_default_x86_platform (void);
 
-void
+int
 grub_install_register_efi (grub_device_t efidir_grub_dev,
                           const char *efifile_path,
                           const char *efi_distributor);

diff --git a/util/grub-install.c b/util/grub-install.c
index 5e4cdfd..690f180 100644 (file)
--- a/util/grub-install.c
+++ b/util/grub-install.c
@@ -1848,9 +1848,13 @@ main (int argc, char *argv[])
          if (!removable && update_nvram)
            {
              /* Try to make this image bootable using the EFI Boot Manager, if available.  */
-             grub_install_register_efi (efidir_grub_dev,
-                                        "\\System\\Library\\CoreServices",
-                                        efi_distributor);
+             int ret;
+             ret = grub_install_register_efi (efidir_grub_dev,
+                                              "\\System\\Library\\CoreServices",
+                                              efi_distributor);
+             if (ret)
+               grub_util_error (_("efibootmgr failed to register the boot entry: %s"),
+                                strerror (ret));
            }
 
          grub_device_close (ins_dev);
@@ -1871,6 +1875,7 @@ main (int argc, char *argv[])
        {
          char * efifile_path;
          char * part;
+         int ret;
 
          /* Try to make this image bootable using the EFI Boot Manager, if available.  */
          if (!efi_distributor || efi_distributor[0] == '\0')
@@ -1887,8 +1892,11 @@ main (int argc, char *argv[])
                          efidir_grub_dev->disk->name,
                          (part ? ",": ""), (part ? : ""));
          grub_free (part);
-         grub_install_register_efi (efidir_grub_dev,
-                                    efifile_path, efi_distributor);
+         ret = grub_install_register_efi (efidir_grub_dev,
+                                          efifile_path, efi_distributor);
+         if (ret)
+           grub_util_error (_("efibootmgr failed to register the boot entry: %s"),
+                            strerror (ret));
        }
       break;