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转变为仅在内核留下Stub在外部加载KPM

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This commit is contained in:
liankong
2025-03-31 13:55:48 +08:00
parent fff86dcc8d
commit af78f3bac4
6 changed files with 28 additions and 1436 deletions
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72
kernel/kpm/compact.c
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@@ -31,62 +31,17 @@ unsigned long sukisu_compact_find_symbol(const char* name);
// ======================================================================
const char* kpver = "0.10";
struct CompactAddressSymbol {
const char* symbol_name;
void* addr;
};
struct CompactAliasSymbol {
const char* symbol_name;
const char* compact_symbol_name;
};
struct CompactProxySymbol {
const char* symbol_name;
const char* compact_symbol_name;
void* cached_address;
};
static struct CompactAddressSymbol address_symbol [] = {
{ "kallsyms_lookup_name", &kallsyms_lookup_name },
{ "compact_find_symbol", &sukisu_compact_find_symbol },
{ "compat_copy_to_user", &copy_to_user },
{ "compat_strncpy_from_user", &strncpy_from_user },
{ "kpver", &kpver },
{ "is_run_in_sukisu_ultra", (void*)1 }
};
static struct CompactAliasSymbol alias_symbol[] = {
{"compat_copy_to_user", "__arch_copy_to_user"}
};
static struct CompactProxySymbol proxy_symbol[] = {
{"kf_strncat", "strncat", NULL },
{"kf_strlen", "strlen", NULL },
{"kf_strcpy", "strcpy", NULL },
};
static unsigned long sukisu_find_proxy_symbol(const char* name) {
// 查找proxy符号
int i;
for(i = 0; i < (sizeof(proxy_symbol) / sizeof(struct CompactProxySymbol)); i++) {
struct CompactProxySymbol* symbol = &proxy_symbol[i];
if(strcmp(name, symbol->symbol_name) == 0) {
if(symbol->cached_address == NULL) {
symbol->cached_address = (void*) kallsyms_lookup_name(symbol->compact_symbol_name);
}
if(symbol->cached_address != NULL) {
return (unsigned long) &symbol->cached_address;
} else {
return 0;
}
}
}
return 0;
}
unsigned long sukisu_compact_find_symbol(const char* name) {
int i;
unsigned long addr;
@@ -100,34 +55,13 @@ unsigned long sukisu_compact_find_symbol(const char* name) {
}
}
/* 如果符号名以 "kf_" 开头，尝试解析去掉前缀的部分 */
if (strncmp(name, "kf_", 3) == 0) {
addr = sukisu_find_proxy_symbol(name);
isFoundedProxy = 1;
if(addr != 0) {
return addr;
}
}
// 通过内核来查
addr = kallsyms_lookup_name(name);
if(addr) {
return addr;
}
// 查不到就查查兼容的符号
for(i = 0; i < (sizeof(alias_symbol) / sizeof(struct CompactAliasSymbol)); i++) {
struct CompactAliasSymbol* symbol = &alias_symbol[i];
if(strcmp(name, symbol->symbol_name) == 0) {
addr = kallsyms_lookup_name(symbol->compact_symbol_name);
if(addr)
return addr;
}
}
if(!isFoundedProxy) {
return sukisu_find_proxy_symbol(name);
}
return 0;
}
}
EXPORT_SYMBOL(sukisu_compact_find_symbol);