96 lines
2.2 KiB
Diff
96 lines
2.2 KiB
Diff
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v2: Add GRUB_FILE_TYPE_CONFIG to grub_file_open, see also upstream commit
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ca0a4f689 verifiers: File type for fine-grained signature-verification controlling
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--- a/grub-core/kern/efi/init.c
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+++ b/grub-core/kern/efi/init.c
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@@ -28,6 +28,7 @@
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#include <grub/env.h>
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#include <grub/mm.h>
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#include <grub/kernel.h>
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+#include <grub/file.h>
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#include <grub/stack_protector.h>
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#ifdef GRUB_STACK_PROTECTOR
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@@ -135,6 +136,67 @@
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void (*grub_efi_net_config) (grub_efi_handle_t hnd,
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char **device,
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char **path);
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+static char *
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+workaround_efi_firmware_path (const char *device, const char *path)
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+{
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+ char *config = NULL;;
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+ char *config_upper = NULL;
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+ char *path_upper = NULL;
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+ char *ret_path = NULL;
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+ grub_file_t config_fd = NULL;
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+ char *s;
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+
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+ if (!device || !path)
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+ return NULL;
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+
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+ /* only workaround if booting off from cd device */
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+ if (grub_strncmp (device, "cd", 2) != 0)
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+ goto quit;
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+
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+ config = grub_xasprintf ("(%s)%s/grub.cfg", device, path);
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+ config_fd = grub_file_open (config, GRUB_FILE_TYPE_CONFIG);
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+
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+ /* everything's fine, so quit the workaround */
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+ if (config_fd)
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+ goto quit;
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+
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+ /* reset grub error state because noone else does... */
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+ grub_errno = GRUB_ERR_NONE;
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+
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+ /* try again, this time upper case path */
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+ path_upper = grub_strdup (path);
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+ if (! path_upper)
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+ goto quit;
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+
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+ s = path_upper;
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+ for (; *s; s++) *s = grub_toupper(*s);
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+
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+ config_upper = grub_xasprintf ("(%s)%s/grub.cfg", device, path_upper);
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+ if (! config_upper)
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+ goto quit;
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+
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+ config_fd = grub_file_open (config_upper, GRUB_FILE_TYPE_CONFIG);
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+
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+ /* if config can be found by the upper case path, return it */
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+ if (config_fd)
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+ ret_path = grub_strdup (path_upper);
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+
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+quit:
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+
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+ if (config_fd)
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+ grub_file_close (config_fd);
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+
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+ if (grub_errno)
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+ grub_errno = GRUB_ERR_NONE;
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+
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+ if (config)
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+ grub_free (config);
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+
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+ if (config_upper)
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+ grub_free (config_upper);
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+
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+ return ret_path;
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+}
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void
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grub_machine_get_bootlocation (char **device, char **path)
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@@ -159,6 +221,12 @@
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p = grub_strrchr (*path, '/');
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if (p)
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*p = '\0';
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+
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+ if ((p = workaround_efi_firmware_path (*device, *path)))
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+ {
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+ grub_free (*path);
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+ *path = p;
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+ }
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}
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}
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