41 lines
1.1 KiB
C
41 lines
1.1 KiB
C
/* SPDX-License-Identifier: LGPL-2.1-or-later */
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#include "dlfcn-util.h"
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int dlsym_many_and_warn(void *dl, int level, ...) {
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va_list ap;
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int r;
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/* Tries to resolve a bunch of function symbols, and logs errors about the ones it cannot
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* resolve. Note that this function possibly modifies the supplied function pointers if the whole
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* operation fails */
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va_start(ap, level);
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for (;;) {
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void (**fn)(void);
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void (*tfn)(void);
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const char *symbol;
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fn = va_arg(ap, typeof(fn));
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if (!fn)
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break;
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symbol = va_arg(ap, typeof(symbol));
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tfn = (typeof(tfn)) dlsym(dl, symbol);
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if (!tfn) {
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r = log_full_errno(level,
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SYNTHETIC_ERRNO(ELIBBAD),
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"Can't find symbol %s: %s", symbol, dlerror());
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va_end(ap);
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return r;
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}
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*fn = tfn;
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}
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va_end(ap);
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return 0;
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}
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