unsigned long sym_get_size;
unsigned long sym_put_addr;
unsigned long sym_put_size;
- unsigned long padding[3];
+ unsigned long kv_major;
+ unsigned long padding[2];
}ko_param;
#pragma pack()
};
#if defined(CONFIG_X86_64)
-#define PATCH_OP_POS 3
-#define CODE_MATCH(code, i) \
+#define PATCH_OP_POS1 3
+#define CODE_MATCH1(code, i) \
(code[i] == 0x40 && code[i + 1] == 0x80 && code[i + 2] == 0xce && code[i + 3] == 0x80)
+
+#define PATCH_OP_POS2 1
+#define CODE_MATCH2(code, i) \
+ (code[i] == 0x0C && code[i + 1] == 0x80 && code[i + 2] == 0x89 && code[i + 3] == 0xC6)
+
#elif defined(CONFIG_X86_32)
-#define PATCH_OP_POS 2
-#define CODE_MATCH(code, i) \
+#define PATCH_OP_POS1 2
+#define CODE_MATCH1(code, i) \
(code[i] == 0x80 && code[i + 1] == 0xca && code[i + 2] == 0x80 && code[i + 3] == 0xe8)
+
+#define PATCH_OP_POS2 2
+#define CODE_MATCH2(code, i) \
+ (code[i] == 0x80 && code[i + 1] == 0xca && code[i + 2] == 0x80 && code[i + 3] == 0xe8)
+
#else
#error "unsupported arch"
#endif
static int notrace dmpatch_replace_code
(
+ int style,
unsigned long addr,
unsigned long size,
int expect,
unsigned long align;
unsigned char *opCode = (unsigned char *)addr;
- vdebug("patch for %s 0x%lx %d\n", desc, addr, (int)size);
+ vdebug("patch for %s style[%d] 0x%lx %d\n", desc, style, addr, (int)size);
for (i = 0; i < (int)size - 4; i++)
{
- if (CODE_MATCH(opCode, i) && cnt < MAX_PATCH)
+ if (style == 1)
{
- patch[cnt] = opCode + i + PATCH_OP_POS;
- cnt++;
+ if (CODE_MATCH1(opCode, i) && cnt < MAX_PATCH)
+ {
+ patch[cnt] = opCode + i + PATCH_OP_POS1;
+ cnt++;
+ }
+ }
+ else
+ {
+ if (CODE_MATCH2(opCode, i) && cnt < MAX_PATCH)
+ {
+ patch[cnt] = opCode + i + PATCH_OP_POS2;
+ cnt++;
+ }
}
}
reg_kprobe = (kprobe_reg_pf)g_ko_param.reg_kprobe_addr;
unreg_kprobe = (kprobe_unreg_pf)g_ko_param.unreg_kprobe_addr;
- r = dmpatch_replace_code(g_ko_param.sym_get_addr, g_ko_param.sym_get_size, 2, "dm_get_table_device", g_get_patch);
+ r = dmpatch_replace_code(1, g_ko_param.sym_get_addr, g_ko_param.sym_get_size, 2, "dm_get_table_device", g_get_patch);
+ if (r && g_ko_param.kv_major >= 5)
+ {
+ vdebug("new patch dm_get_table_device...\n");
+ r = dmpatch_replace_code(2, g_ko_param.sym_get_addr, g_ko_param.sym_get_size, 1, "dm_get_table_device", g_get_patch);
+ }
+
if (r)
{
rc = -EINVAL;
}
vdebug("patch dm_get_table_device success\n");
- r = dmpatch_replace_code(g_ko_param.sym_put_addr, g_ko_param.sym_put_size, 1, "dm_put_table_device", g_put_patch);
+ r = dmpatch_replace_code(1, g_ko_param.sym_put_addr, g_ko_param.sym_put_size, 1, "dm_put_table_device", g_put_patch);
if (r)
{
rc = -EINVAL;
if [ "$VTOY_DEBUG_LEVEL" = "01" ]; then
printk_addr=$($GREP ' printk$' /proc/kallsyms | $AWK '{print $1}')
+ if [ -z "$printk_addr" ]; then
+ printk_addr=$($GREP ' _printk$' /proc/kallsyms | $AWK '{print $1}')
+ fi
vtDebug="-v"
else
printk_addr=0
#step2: fill parameters
vtPgsize=$($VTOY_PATH/tool/vtoyksym -p)
- vtlog "$VTOY_PATH/tool/vtoykmod -f $VTOY_PATH/tool/$vtKoName $vtPgsize 0x$printk_addr 0x$ro_addr 0x$rw_addr $get_addr $get_size $put_addr $put_size 0x$kprobe_reg_addr 0x$kprobe_unreg_addr $vtDebug"
- $VTOY_PATH/tool/vtoykmod -f $VTOY_PATH/tool/$vtKoName $vtPgsize 0x$printk_addr 0x$ro_addr 0x$rw_addr $get_addr $get_size $put_addr $put_size 0x$kprobe_reg_addr 0x$kprobe_unreg_addr $vtDebug
+ vtlog "$VTOY_PATH/tool/vtoykmod -f $VTOY_PATH/tool/$vtKoName $vtPgsize 0x$printk_addr 0x$ro_addr 0x$rw_addr $get_addr $get_size $put_addr $put_size 0x$kprobe_reg_addr 0x$kprobe_unreg_addr $vtKv $vtDebug"
+ $VTOY_PATH/tool/vtoykmod -f $VTOY_PATH/tool/$vtKoName $vtPgsize 0x$printk_addr 0x$ro_addr 0x$rw_addr $get_addr $get_size $put_addr $put_size 0x$kprobe_reg_addr 0x$kprobe_unreg_addr $vtKv $vtDebug
$BUSYBOX_PATH/insmod $VTOY_PATH/tool/$vtKoName
unsigned long sym_get_size;
unsigned long sym_put_addr;
unsigned long sym_put_size;
- unsigned long padding[3];
+ unsigned long kv_major;
+ unsigned long padding[2];
}ko_param;
#pragma pack()
param->sym_put_size = strtoul(argv[8], NULL, 10);
param->reg_kprobe_addr = strtoul(argv[9], NULL, 16);
param->unreg_kprobe_addr = strtoul(argv[10], NULL, 16);
+ param->kv_major = (unsigned long)(argv[11][0] - '0');
debug("pgsize=%lu (%s)\n", param->pgsize, argv[1]);
debug("printk_addr=0x%lx (%s)\n", param->printk_addr, argv[2]);
debug("sym_put_size=%lu (%s)\n", param->sym_put_size, argv[8]);
debug("reg_kprobe_addr=0x%lx (%s)\n", param->reg_kprobe_addr, argv[9]);
debug("unreg_kprobe_addr=0x%lx (%s)\n", param->unreg_kprobe_addr, argv[10]);
+ debug("kv_major=%lu (%s)\n", param->kv_major, argv[11]);
break;
}