Patchwork [3/6] vvfat: need to use first_sectors_number to distinguish fdd/hdd

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Submitter Paolo Bonzini
Date Oct. 5, 2011, 7:12 a.m.
Message ID <1317798728-28938-4-git-send-email-pbonzini@redhat.com>
Download mbox | patch
Permalink /patch/117748/
State New
Headers show

Comments

Paolo Bonzini - Oct. 5, 2011, 7:12 a.m.
This is consistent with what "real" floppies have, so file(1)
now actually recognizes the VVFAT image as a 1.44 MB floppy.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---
 block/vvfat.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

Patch

diff --git a/block/vvfat.c b/block/vvfat.c
index bc2dd4c..eb91642 100644
--- a/block/vvfat.c
+++ b/block/vvfat.c
@@ -968,7 +968,7 @@  static int init_directories(BDRVVVFATState* s,
     bootsector->number_of_fats=0x2; /* number of FATs */
     bootsector->root_entries=cpu_to_le16(s->sectors_of_root_directory*0x10);
     bootsector->total_sectors16=s->sector_count>0xffff?0:cpu_to_le16(s->sector_count);
-    bootsector->media_type=(s->fat_type!=12?0xf8:s->sector_count==5760?0xf9:0xf8); /* media descriptor */
+    bootsector->media_type=(s->first_sectors_number>1?0xf8:0xf0); /* media descriptor (f8=hd, f0=3.5 fd)*/
     s->fat.pointer[0] = bootsector->media_type;
     bootsector->sectors_per_fat=cpu_to_le16(s->sectors_per_fat);
     bootsector->sectors_per_track=cpu_to_le16(s->bs->secs);
@@ -977,7 +977,7 @@  static int init_directories(BDRVVVFATState* s,
     bootsector->total_sectors=cpu_to_le32(s->sector_count>0xffff?s->sector_count:0);
 
     /* LATER TODO: if FAT32, this is wrong */
-    bootsector->u.fat16.drive_number=s->fat_type==12?0:0x80; /* assume this is hda (TODO) */
+    bootsector->u.fat16.drive_number=s->first_sectors_number==1?0:0x80; /* fda=0, hda=0x80 */
     bootsector->u.fat16.current_head=0;
     bootsector->u.fat16.signature=0x29;
     bootsector->u.fat16.id=cpu_to_le32(0xfabe1afd);