vbatts/grub
1
0
Fork 0
Code Issues Pull requests Releases Wiki Activity

Fix in-extent reading

Browse source
This commit is contained in:
Vladimir 'phcoder' Serbinenko 2010-12-02 15:08:46 +01:00
parent 228cfb40bf
commit 8006f6779e
1 changed files with 5 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

7
grub-core/fs/btrfs.c
View file

@ -912,6 +912,7 @@ grub_btrfs_read (grub_file_t file, char *buf, grub_size_t len)
grub_disk_addr_t elemaddr;
grub_size_t elemsize;
struct grub_btrfs_key key_in, key_out;
grub_off_t extoff;
while (len)
{
@ -955,6 +956,7 @@ grub_btrfs_read (grub_file_t file, char *buf, grub_size_t len)
grub_le_to_cpu64 (extent->size));
csize = grub_le_to_cpu64 (extent->size)
+ grub_le_to_cpu64 (key_out.offset) - pos;
extoff = pos - grub_le_to_cpu64 (key_out.offset);
if (csize > len)
csize = len;
@ -983,7 +985,7 @@ grub_btrfs_read (grub_file_t file, char *buf, grub_size_t len)
switch (extent->type)
{
case GRUB_BTRFS_EXTENT_INLINE:
grub_memcpy (buf, extent->inl, csize);
grub_memcpy (buf, extent->inl + extoff, csize);
grub_free (extent);
break;
case GRUB_BTRFS_EXTENT_REGULAR:
@ -993,7 +995,8 @@ grub_btrfs_read (grub_file_t file, char *buf, grub_size_t len)
break;
}
err = grub_btrfs_read_logical (data, file->device->disk,
grub_le_to_cpu64 (extent->laddr),
grub_le_to_cpu64 (extent->laddr)
+ extoff,
buf, csize);
grub_free (extent);
if (err)