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| #include "unp.h" | |
| ssize_t readn(int filedes, void *buff, size_t nbytes); | |
| ssize_t writen(int filedes, const void *buff, size_t nbytes); | |
| ssize_t readline(int filedes, void *buff, size_t maxlen); | |
| /* All return: number of bytes read or written, –1 on error */ |
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