grub_xen_evtchn_t evtchn;
void *dma_page;
grub_xen_grant_t dma_grant;
+ struct virtdisk *compat_next;
};
#define xen_wmb() mb()
static struct virtdisk *virtdisks;
static grub_size_t vdiskcnt;
+struct virtdisk *compat_head;
static int
grub_virtdisk_iterate (grub_disk_dev_iterate_hook_t hook, void *hook_data,
static grub_err_t
grub_virtdisk_open (const char *name, grub_disk_t disk)
{
- grub_size_t i;
+ int i;
grub_uint32_t secsize;
char fdir[200];
char *buf;
+ int num = -1;
+ struct virtdisk *vd;
- for (i = 0; i < vdiskcnt; i++)
- if (grub_strcmp (name, virtdisks[i].fullname) == 0)
+ /* For compatibility with pv-grub legacy menu.lst accept hdX as disk name */
+ if (name[0] == 'h' && name[1] == 'd' && name[2])
+ {
+ num = grub_strtoul (name + 2, 0, 10);
+ if (grub_errno)
+ {
+ grub_errno = 0;
+ num = -1;
+ }
+ }
+ for (i = 0, vd = compat_head; vd; vd = vd->compat_next, i++)
+ if (i == num || grub_strcmp (name, vd->fullname) == 0)
break;
- if (i == vdiskcnt)
+ if (!vd)
return grub_error (GRUB_ERR_UNKNOWN_DEVICE, "not a virtdisk");
- disk->data = &virtdisks[i];
- disk->id = i;
+ disk->data = vd;
+ disk->id = vd - virtdisks;
- grub_snprintf (fdir, sizeof (fdir), "%s/sectors", virtdisks[i].backend_dir);
+ grub_snprintf (fdir, sizeof (fdir), "%s/sectors", vd->backend_dir);
buf = grub_xenstore_get_file (fdir, NULL);
if (!buf)
return grub_errno;
if (grub_errno)
return grub_errno;
- grub_snprintf (fdir, sizeof (fdir), "%s/sector-size",
- virtdisks[i].backend_dir);
+ grub_snprintf (fdir, sizeof (fdir), "%s/sector-size", vd->backend_dir);
buf = grub_xenstore_get_file (fdir, NULL);
if (!buf)
return grub_errno;
grub_err_t err;
void *buf;
struct evtchn_alloc_unbound alloc_unbound;
+ struct virtdisk **prev = &compat_head, *vd = compat_head;
/* Shouldn't happen unles some hotplug happened. */
if (vdiskcnt >= *ctr)
virtdisks[vdiskcnt].frontend_dir = grub_strdup (fdir);
+ /* For compatibility with pv-grub maintain linked list sorted by handle
+ value in increasing order. This allows mapping of (hdX) disk names
+ from legacy menu.lst */
+ while (vd)
+ {
+ if (vd->handle > virtdisks[vdiskcnt].handle)
+ break;
+ prev = &vd->compat_next;
+ vd = vd->compat_next;
+ }
+ virtdisks[vdiskcnt].compat_next = vd;
+ *prev = &virtdisks[vdiskcnt];
+
vdiskcnt++;
return 0;