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

Make grub_zlib_decompress handle incomplete chunks.

Browse source 
Fixes squash4.
This commit is contained in:
Vladimir Serbinenko 2013-12-18 23:39:49 +01:00
parent 2984035e1a
commit 2e238b3708
5 changed files with 38 additions and 14 deletions
Download patch file Download diff file Expand all files Collapse all files

16
grub-core/fs/hfspluscomp.c
View file

@ -156,8 +156,12 @@ hfsplus_read_compressed_real (struct grub_hfsplus_file *node,
if (ts > node->size - (pos & ~(HFSPLUS_COMPRESS_BLOCK_SIZE)))
ts = node->size - (pos & ~(HFSPLUS_COMPRESS_BLOCK_SIZE));
if (grub_zlib_decompress (tmp_buf, sz, 0,
node->cbuf, ts) < 0)
node->cbuf, ts) != (grub_ssize_t) ts)
{
if (!grub_errno)
grub_error (GRUB_ERR_BAD_COMPRESSED_DATA,
"premature end of compressed");
grub_free (tmp_buf);
return -1;
}
@ -288,8 +292,14 @@ hfsplus_open_compressed_real (struct grub_hfsplus_file *node)
if (grub_zlib_decompress ((char *) (cmp_head + 1),
grub_cpu_to_be64 (attr_head->size)
- sizeof (*cmp_head), 0,
node->cbuf, node->size) < 0)
return grub_errno;
node->cbuf, node->size)
!= (grub_ssize_t) node->size)
{
if (!grub_errno)
grub_error (GRUB_ERR_BAD_COMPRESSED_DATA,
"premature end of compressed");
return grub_errno;
}
node->compressed = 1;
return 0;
}