Here's a patch which implements UUID support for the iso9660 filesystem,
by using the creation date in the `superblock'.
The specs say that it's allowed to contain only zeros but I think this
shouldn't be a big problem.
--
Felix Zielcke
2008-08-30 Felix Zielcke <[EMAIL PROTECTED]>
* fs/iso9660.c (grub_iso9660_date): New structure.
(grub_iso9660_primary_voldesc): Add `struct grub_iso9660_date' member.
(grub_iso9660_uuid): New function.
Index: fs/iso9660.c
===================================================================
--- fs/iso9660.c (Revision 1836)
+++ fs/iso9660.c (Arbeitskopie)
@@ -67,6 +67,18 @@ struct grub_iso9660_dir
grub_uint8_t namelen;
} __attribute__ ((packed));
+struct grub_iso9660_date
+{
+ grub_uint8_t year[4];
+ grub_uint8_t month[2];
+ grub_uint8_t day[2];
+ grub_uint8_t hour[2];
+ grub_uint8_t minute[2];
+ grub_uint8_t second[2];
+ grub_uint8_t hundredth[2];
+ grub_uint8_t offset;
+}__attribute__ ((packed));
+
/* The primary volume descriptor. Only little endian is used. */
struct grub_iso9660_primary_voldesc
{
@@ -81,6 +93,8 @@ struct grub_iso9660_primary_voldesc
grub_uint32_t path_table;
grub_uint8_t unused5[12];
struct grub_iso9660_dir rootdir;
+ grub_uint8_t unused6[641];
+ struct grub_iso9660_date created;
} __attribute__ ((packed));
/* A single entry in the path table. */
@@ -812,8 +826,45 @@ grub_iso9660_label (grub_device_t device
return grub_errno;
}
-
+static grub_err_t
+grub_iso9660_uuid (grub_device_t device, char **uuid)
+{
+ struct grub_iso9660_data *data;
+ grub_disk_t disk = device->disk;
+
+#ifndef GRUB_UTIL
+ grub_dl_ref (my_mod);
+#endif
+
+ data = grub_iso9660_mount (disk);
+ if (data)
+ {
+ *uuid = grub_malloc (sizeof (struct grub_iso9660_date) + sizeof ('\0'));
+ grub_sprintf (*uuid, "%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c%02u",
+ data->voldesc.created.year[0], data->voldesc.created.year[1],
+ data->voldesc.created.year[2], data->voldesc.created.year[3],
+ data->voldesc.created.month[0], data->voldesc.created.month[1],
+ data->voldesc.created.day[0], data->voldesc.created.day[1],
+ data->voldesc.created.hour[0], data->voldesc.created.hour[1],
+ data->voldesc.created.minute[0], data->voldesc.created.minute[1],
+ data->voldesc.created.second[0], data->voldesc.created.second[2],
+ data->voldesc.created.hundredth[0], data->voldesc.created.hundredth[1],
+ data->voldesc.created.offset);
+ }
+ else
+ *uuid = NULL;
+
+#ifndef GRUB_UTIL
+ grub_dl_unref (my_mod);
+#endif
+
+ grub_free (data);
+
+ return grub_errno;
+}
+
+
static struct grub_fs grub_iso9660_fs =
{
.name = "iso9660",
@@ -822,6 +873,7 @@ static struct grub_fs grub_iso9660_fs =
.read = grub_iso9660_read,
.close = grub_iso9660_close,
.label = grub_iso9660_label,
+ .uuid = grub_iso9660_uuid,
.next = 0
};
Index: config.h.in
===================================================================
--- config.h.in (Revision 1836)
+++ config.h.in (Arbeitskopie)
@@ -109,17 +109,48 @@
/* Define to 1 if you have the ANSI C header files. */
#undef STDC_HEADERS
-/* Define to 1 if your processor stores words with the most significant byte
- first (like Motorola and SPARC, unlike Intel and VAX). */
-#undef WORDS_BIGENDIAN
+/* Define WORDS_BIGENDIAN to 1 if your processor stores words with the most
+ significant byte first (like Motorola and SPARC, unlike Intel and VAX). */
+#if defined __BIG_ENDIAN__
+# define WORDS_BIGENDIAN 1
+#elif ! defined __LITTLE_ENDIAN__
+# undef WORDS_BIGENDIAN
+#endif
/* Number of bits in a file offset, on hosts where this is settable. */
#undef _FILE_OFFSET_BITS
+/* Define for large files, on AIX-style hosts. */
+#undef _LARGE_FILES
+
+/* Define to 1 if on MINIX. */
+#undef _MINIX
+
+/* Define to 2 if the system does not provide POSIX.1 features except with
+ this defined. */
+#undef _POSIX_1_SOURCE
+
+/* Define to 1 if you need to in order for `stat' and other things to work. */
+#undef _POSIX_SOURCE
+
+/* Enable extensions on AIX 3, Interix. */
+#ifndef _ALL_SOURCE
+# undef _ALL_SOURCE
+#endif
/* Enable GNU extensions on systems that have them. */
#ifndef _GNU_SOURCE
# undef _GNU_SOURCE
#endif
+/* Enable threading extensions on Solaris. */
+#ifndef _POSIX_PTHREAD_SEMANTICS
+# undef _POSIX_PTHREAD_SEMANTICS
+#endif
+/* Enable extensions on HP NonStop. */
+#ifndef _TANDEM_SOURCE
+# undef _TANDEM_SOURCE
+#endif
+/* Enable general extensions on Solaris. */
+#ifndef __EXTENSIONS__
+# undef __EXTENSIONS__
+#endif
-/* Define for large files, on AIX-style hosts. */
-#undef _LARGE_FILES
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