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VTOY_LINUX_REMOUNT support for both 64bit(x86_64) and 32bit(i386) linux distro.

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This commit is contained in:
longpanda
2022-01-12 10:24:44 +08:00
parent 76a6b8061c
commit e5fa5e6d84
5 changed files with 13 additions and 3 deletions
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12
DMPATCH/dmpatch.c
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@@ -68,9 +68,17 @@ static volatile ko_param g_ko_param =
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
};
#if defined(CONFIG_X86_64)
#define PATCH_OP_POS 3
#define CODE_MATCH(code, i) \
(code[i] == 0x40 && code[i + 1] == 0x80 && code[i + 2] == 0xce && code[i + 3] == 0x80)
#elif defined(CONFIG_X86_32)
#define PATCH_OP_POS 2
#define CODE_MATCH(code, i) \
(code[i] == 0x80 && code[i + 1] == 0xca && code[i + 2] == 0x80 && code[i + 3] == 0xe8)
#else
#error "unsupported arch"
#endif
#define vdebug(fmt, args...) if(kprintf) kprintf(KERN_ERR fmt, ##args)
@@ -88,7 +96,7 @@ static int notrace dmpatch_replace_code(unsigned long addr, unsigned long size,
{
if (CODE_MATCH(opCode, i) && cnt < MAX_PATCH)
{
patch[cnt] = opCode + i + 3;
patch[cnt] = opCode + i + PATCH_OP_POS;
cnt++;
}
}

2
DMPATCH/readme.txt
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@@ -1,5 +1,5 @@
1. install ubuntu 21.10
2. apt-get install build-essential flex ncurse linux-headers-generic linux-source ...... and so on
2. apt-get install build-essential flex libncurses-dev linux-headers-generic linux-source libssl-dev ...... and so on
3. cp /lib/modules/5.13.0-23-generic/build/Module.symvers ./
4. /boot/config-5.13.0-23-generic as .config make oldconfig
5. make menuconfig