51 lines
1.7 KiB
C
51 lines
1.7 KiB
C
|
|
||
|
|
#ifndef DYNSO_H_
|
||
|
|
#define DYNSO_H_
|
||
|
|
|
||
|
|
#ifndef _GNU_SOURCE
|
||
|
|
#define _GNU_SOURCE /* for Lmid_t */
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#include <dlfcn.h>
|
||
|
|
#include <link.h>
|
||
|
|
|
||
|
|
struct dynso_lib;
|
||
|
|
|
||
|
|
enum dynso_err {
|
||
|
|
dynso_ok = 0,
|
||
|
|
dynso_argument, // invalid argument
|
||
|
|
dynso_oom, // out-of-memory
|
||
|
|
dynso_bound, // the library is already bound
|
||
|
|
dynso_removed, // the library is already removed
|
||
|
|
dynso_ldso_not_found, // can't find ld.so in link map
|
||
|
|
//dynso_ldso_not_elf, // ld.so is not an ELF file, somehow
|
||
|
|
//dynso_ldso_cant_open, // can't open ld.so for reading
|
||
|
|
dynso_ldso_ioerr, // IO error whie parsing ld.so
|
||
|
|
dynso_ldso_stripped, // ld.so is stripped
|
||
|
|
dysno_ldso_no_symtab, // can't find ld.so's symbol table
|
||
|
|
dynso_no_ldso_syms, // can't resolve ld.so-internal symbols
|
||
|
|
dynso_no_newobj, // can't create a new symbol
|
||
|
|
dynso_no_priv2, // can't find the offset of the priv2 part of a struct link_map
|
||
|
|
dynso_no_priv3, // can't find the offset of the priv3 part of a struct link_map
|
||
|
|
};
|
||
|
|
|
||
|
|
// create a library
|
||
|
|
enum dynso_err dynso_create(struct dynso_lib** l, size_t address, /* leave at 0 unless you know what you're doing */
|
||
|
|
char* realname, const char* libname, struct link_map* owner,
|
||
|
|
Lmid_t ns); // owner can be NULL. if so, the main executable will be used (_r_debug.r_map)
|
||
|
|
|
||
|
|
// add a symbol to a not-yet-bound library
|
||
|
|
enum dynso_err dynso_add_sym_ex(struct dynso_lib* l, const char* name, void* value, int type, size_t size);
|
||
|
|
inline static enum dynso_err dynso_add_sym(struct dynso_lib* l, const char* name, void* value) {
|
||
|
|
return dynso_add_sym_ex(l, name, value, 0, 0);
|
||
|
|
}
|
||
|
|
|
||
|
|
// bind the library to the runtime. will perform hacks!
|
||
|
|
enum dynso_err dynso_bind(struct dynso_lib* l);
|
||
|
|
|
||
|
|
// remove the library from places. it'll be useless after this
|
||
|
|
void dynso_remove(struct dynso_lib* l);
|
||
|
|
|
||
|
|
#endif
|
||
|
|
|