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