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c36b4b6003af532305ac2b461616d219f11f31b2 blob 224 bytes (raw)

#include <sys/ipc.h>
#include <sys/stat.h>

key_t ftok(const char *path, int id)
{
	struct stat st;
	if (stat(path, &st) < 0) return -1;

	return ((st.st_ino & 0xffff) | ((st.st_dev & 0xff) << 16) | ((id & 0xffu) << 24));
}

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