github.com/afumu/libc@v0.0.6/musl/src/unistd/dup.c (about)

     1  #include <unistd.h>
     2  #include "syscall.h"
     3  
     4  int dup(int fd)
     5  {
     6  	return syscall(SYS_dup, fd);
     7  }