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recognize another variation of head.S: ljmp $0x10,...

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committer: jreiser <jreiser> 1084136848 +0000
This commit is contained in:
John Reiser 2004-05-09 21:07:28 +00:00
parent fee6f17caf
commit ed8a71bba1
1 changed files with 4 additions and 2 deletions
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6
src/p_vmlinz.cpp
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@ -199,8 +199,10 @@ int PackVmlinuzI386::decompressKernel()
throwCantPack("trailing bytes after kernel image; use option `-f' to force packing");
}
// see /usr/src/linux/arch/i386/kernel/head.S:
if (memcmp(ibuf, "\xFC\xB8", 2) != 0
&& memcmp(ibuf, "\xFC\x0F\x01", 3) != 0 )
if (memcmp(ibuf, "\xFC\xB8", 2) != 0 /* 2.4.x: cld; mov $...,%eax */
&& memcmp(ibuf, "\xFC\x0F\x01", 3) != 0 /* 2.6.x: cld; lgdt ... */
&& !(0xEA==ibuf[0] /* 2.6.x+grsecurity+strongswan+openwall+trustix: ljmp $0x10,... */
&& 0==memcmp(5+ibuf, "\x10\x00", 2)) )
throwCantPack("unrecognized kernel architecture; use option `-f' to force packing");
// FIXME: more checks for special magic bytes in ibuf ???