zfs/lib/libspl/os/linux/getexecname.c

/*
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 * or http://www.opensolaris.org/os/licensing.
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 *
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 * If applicable, add the following below this CDDL HEADER, with the
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#include <limits.h>
#include <stdint.h>
#include <unistd.h>
#include "../../libspl_impl.h"

__attribute__((visibility("hidden"))) ssize_t
getexecname_impl(char *execname)
{
	return (readlink("/proc/self/exe", execname, PATH_MAX));
}