1 #ifndef SYS_UIO_H 2 #define SYS_UIO_H 3 4 #include <inttypes.h> 5 #include <unistd.h> 6 7 struct iovec 8 { 9 void *iov_base; /* Base address of a memory region for input or output */ 10 size_t iov_len; /* The size of the memory pointed to by iov_base */ 11 }; 12 13 ssize_t readv(int fildes, const struct iovec *iov, int iovcnt); 14 ssize_t writev(int fildes, const struct iovec *iov, int iovcnt); 15 16 #endif /* SYS_UIO_H */ 17