Hello list,
Am Sonntag, den 31.08.2008, 15:47 +0200 schrieb Robert Millan:
> Nice work :-)
By the way the TAB key on emacs is really nice you even don't need to
care about moving the cursor to the beginning of the line :)
> > The specs say that it's allowed to contain only zeros but I think this
> > shouldn't be a big problem.
>
> I think this could indeed be a problem if it leads to collisions. If "all
> zeroes" is detected, one could rise an error in uuid() function to prevent the
> caller from taking the value into consideration.
I have now used grub_error (GRUB_ERR_BAD_NUMBER)
But maybe it would be better to make a new type for this, though I don't
have yet an idea how to call it.
Suggestions please :)
> Since the string contains human-readable information, may I suggest separating
> it with dashes to make it easier to comprehend?
Good idea, I should have done that first that would make it even for me a bit
easier.
I did it now even more human-readable for the `sizeof ()'
--
Felix Zielcke
2008-08-31 Felix Zielcke <[EMAIL PROTECTED]>
* fs/iso9660.c (grub_iso9660_date): New structure.
(grub_iso9660_primary_voldesc): Add `grub_iso9660_date' member.
(grub_iso9660_uuid): New function.
Index: fs/iso9660.c
===================================================================
--- fs/iso9660.c (Revision 1839)
+++ 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 +826,59 @@ 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)
+ {
+ if (! 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[1]
+ && ! data->voldesc.created.hundredth[0] && !
data->voldesc.created.hundredth[1])
+ {
+ grub_error (GRUB_ERR_BAD_NUMBER, "No creation date in filesystem to
generate UUID.");
+ *uuid = NULL;
+ }
+ else
+ {
+ *uuid = grub_malloc (sizeof ("YYYY-MM-DD-HH-mm-ss-hh") + sizeof
('\0'));
+ grub_sprintf (*uuid, "%c%c%c%c-%c%c-%c%c-%c%c-%c%c-%c%c-%c%c",
+ 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[1],
+ data->voldesc.created.hundredth[0],
data->voldesc.created.hundredth[1]);
+ }
+ }
+ 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 +887,7 @@ 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
};
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