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#include #include "error.h" #include "iopause.h" #include "timeout.h" /** @file timeout.c @author djb @source qmail @brief read/write timeout handling */ int timeoutread(int t,int fd,char *buf,int len) { struct taia now; struct taia deadline; iopause_fd x; taia_now(&now); taia_uint(&deadline,t); taia_add(&deadline,&now,&deadline); x.fd = fd; x.events = IOPAUSE_READ; for (;;) { taia_now(&now); iopause(&x,1,&deadline,&now); if (x.revents) break; if (taia_less(&deadline,&now)) { errno = ETIMEDOUT; return -1; } } return read(fd,buf,len); } int timeoutwrite(int t,int fd,char *buf,int len) { struct taia now; struct taia deadline; iopause_fd x; taia_now(&now); taia_uint(&deadline,t); taia_add(&deadline,&now,&deadline); x.fd = fd; x.events = IOPAUSE_WRITE; for (;;) { taia_now(&now); iopause(&x,1,&deadline,&now); if (x.revents) break; if (taia_less(&deadline,&now)) { errno = ETIMEDOUT; return -1; } } return write(fd,buf,len); }