38 lines
1.0 KiB
C++
38 lines
1.0 KiB
C++
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#pragma once
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#include <dlfcn.h>
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#include <stdio.h>
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typedef struct {
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void **func;
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const char *name;
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} dlsym_assign;
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static void* dlsym_print_fail(void *handle, const char *name, bool required) {
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dlerror();
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void *sym = dlsym(handle, name);
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char *err_str = dlerror();
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if(!sym)
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fprintf(stderr, "%s: dlsym(handle, \"%s\") failed, error: %s\n", required ? "error" : "warning", name, err_str ? err_str : "(null)");
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return sym;
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}
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/* |dlsyms| should be null terminated */
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static bool dlsym_load_list(void *handle, const dlsym_assign *dlsyms) {
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bool success = true;
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for(int i = 0; dlsyms[i].func; ++i) {
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*dlsyms[i].func = dlsym_print_fail(handle, dlsyms[i].name, true);
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if(!*dlsyms[i].func)
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success = false;
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}
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return success;
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}
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/* |dlsyms| should be null terminated */
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static void dlsym_load_list_optional(void *handle, const dlsym_assign *dlsyms) {
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for(int i = 0; dlsyms[i].func; ++i) {
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*dlsyms[i].func = dlsym_print_fail(handle, dlsyms[i].name, false);
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}
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}
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