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#define lseek __normal_lseek #include <unistd.h> #include <syscall.h> #undef lseek static inline _syscall3(off_t,lseek,int,fildes,off_t,offset,int,origin) off_t tell(int); off_t tell (int fildes) { return lseek (fildes, 0, SEEK_CUR); }