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-rw-r--r--util/probe.c172
1 files changed, 172 insertions, 0 deletions
diff --git a/util/probe.c b/util/probe.c
new file mode 100644
index 0000000..fa7ca34
--- /dev/null
+++ b/util/probe.c
@@ -0,0 +1,172 @@
+/* grub-probe.c - probe device information for a given path */
+/*
+ * GRUB -- GRand Unified Bootloader
+ * Copyright (C) 2005,2006,2007,2008,2009,2010,2013 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 <config.h>
+#include <grub/types.h>
+#include <grub/emu/misc.h>
+#include <grub/util/misc.h>
+#include <grub/device.h>
+#include <grub/disk.h>
+#include <grub/file.h>
+#include <grub/fs.h>
+#include <grub/partition.h>
+#include <grub/msdos_partition.h>
+#include <grub/gpt_partition.h>
+#include <grub/emu/hostdisk.h>
+#include <grub/emu/getroot.h>
+#include <grub/term.h>
+#include <grub/env.h>
+#include <grub/diskfilter.h>
+#include <grub/i18n.h>
+#include <grub/emu/misc.h>
+#include <grub/util/ofpath.h>
+#include <grub/crypto.h>
+#include <grub/cryptodisk.h>
+
+#include <string.h>
+
+/* Since OF path names can have "," characters in them, and GRUB
+ internally uses "," to indicate partitions (unlike OF which uses
+ ":" for this purpose) we escape such commas. */
+static char *
+escape_of_path (const char *orig_path)
+{
+ char *new_path, *d, c;
+ const char *p;
+
+ if (!strchr (orig_path, ','))
+ return (char *) xstrdup (orig_path);
+
+ new_path = xmalloc (strlen (orig_path) * 2 + 1);
+
+ p = orig_path;
+ d = new_path;
+ while ((c = *p++) != '\0')
+ {
+ if (c == ',')
+ *d++ = '\\';
+ *d++ = c;
+ }
+ *d = 0;
+
+ return new_path;
+}
+
+char *
+grub_util_guess_bios_drive (const char *orig_path)
+{
+ char *canon;
+ char *ptr;
+ canon = grub_canonicalize_file_name (orig_path);
+ if (!canon)
+ return NULL;
+ ptr = strrchr (orig_path, '/');
+ if (ptr)
+ ptr++;
+ else
+ ptr = canon;
+ if ((ptr[0] == 's' || ptr[0] == 'h') && ptr[1] == 'd')
+ {
+ int num = ptr[2] - 'a';
+ free (canon);
+ return xasprintf ("hd%d", num);
+ }
+ if (ptr[0] == 'f' && ptr[1] == 'd')
+ {
+ int num = atoi (ptr + 2);
+ free (canon);
+ return xasprintf ("fd%d", num);
+ }
+ free (canon);
+ return NULL;
+}
+
+char *
+grub_util_guess_efi_drive (const char *orig_path)
+{
+ char *canon;
+ char *ptr;
+ canon = grub_canonicalize_file_name (orig_path);
+ if (!canon)
+ return NULL;
+ ptr = strrchr (orig_path, '/');
+ if (ptr)
+ ptr++;
+ else
+ ptr = canon;
+ if ((ptr[0] == 's' || ptr[0] == 'h') && ptr[1] == 'd')
+ {
+ int num = ptr[2] - 'a';
+ free (canon);
+ return xasprintf ("hd%d", num);
+ }
+ if (ptr[0] == 'f' && ptr[1] == 'd')
+ {
+ int num = atoi (ptr + 2);
+ free (canon);
+ return xasprintf ("fd%d", num);
+ }
+ free (canon);
+ return NULL;
+}
+
+char *
+grub_util_guess_baremetal_drive (const char *orig_path)
+{
+ char *canon;
+ char *ptr;
+ canon = grub_canonicalize_file_name (orig_path);
+ if (!canon)
+ return NULL;
+ ptr = strrchr (orig_path, '/');
+ if (ptr)
+ ptr++;
+ else
+ ptr = canon;
+ if (ptr[0] == 'h' && ptr[1] == 'd')
+ {
+ int num = ptr[2] - 'a';
+ free (canon);
+ return xasprintf ("ata%d", num);
+ }
+ if (ptr[0] == 's' && ptr[1] == 'd')
+ {
+ int num = ptr[2] - 'a';
+ free (canon);
+ return xasprintf ("ahci%d", num);
+ }
+ free (canon);
+ return NULL;
+}
+
+void
+grub_util_fprint_full_disk_name (FILE *f,
+ const char *drive, grub_device_t dev)
+{
+ char *dname = escape_of_path (drive);
+ if (dev->disk->partition)
+ {
+ char *pname = grub_partition_get_name (dev->disk->partition);
+ fprintf (f, "%s,%s", dname, pname);
+ free (pname);
+ }
+ else
+ fprintf (f, "%s", dname);
+ free (dname);
+}