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Merge branch 'gnu' into sync

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This commit is contained in:
David Michael 2017-04-27 12:05:22 -07:00
commit f89e1cf69a
63 changed files with 884 additions and 310 deletions
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33
grub-core/loader/i386/xen_file.c
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@ -19,9 +19,10 @@
#include <grub/xen_file.h>
#include <grub/i386/linux.h>
#include <grub/misc.h>
#include <grub/verity-hash.h>
#define XZ_MAGIC "\3757zXZ\0"
grub_elf_t
grub_xen_file (grub_file_t file)
{
@ -36,6 +37,8 @@ grub_xen_file_and_cmdline (grub_file_t file,
grub_elf_t elf;
struct linux_kernel_header lh;
grub_file_t off_file;
grub_uint32_t payload_offset, payload_length;
grub_uint8_t magic[6];
elf = grub_elf_file (file, file->name);
if (elf)
@ -56,23 +59,39 @@ grub_xen_file_and_cmdline (grub_file_t file,
return NULL;
}
if (lh.payload_length < 4)
payload_length = lh.payload_length;
payload_offset = (lh.setup_sects + 1) * 512
+ lh.payload_offset;
if (payload_length < sizeof (magic))
{
grub_error (GRUB_ERR_BAD_OS, "payload too short");
return NULL;
}
grub_dprintf ("xen", "found bzimage payload 0x%llx-0x%llx\n",
(unsigned long long) (lh.setup_sects + 1) * 512
+ lh.payload_offset,
(unsigned long long) payload_offset,
(unsigned long long) lh.payload_length);
if (cmdline)
grub_pass_verity_hash (&lh, cmdline, cmdline_max_len);
off_file = grub_file_offset_open (file, (lh.setup_sects + 1) * 512
+ lh.payload_offset,
lh.payload_length);
grub_file_seek (file, payload_offset);
if (grub_file_read (file, &magic, sizeof (magic)) != sizeof (magic))
{
if (!grub_errno)
grub_error (GRUB_ERR_BAD_OS, N_("premature end of file %s"),
file->name);
goto fail;
}
/* Kernel suffixes xz payload with their uncompressed size.
Trim it. */
if (grub_memcmp (magic, XZ_MAGIC, sizeof (XZ_MAGIC) - 1) == 0)
payload_length -= 4;
off_file = grub_file_offset_open (file, payload_offset,
payload_length);
if (!off_file)
goto fail;