49 ssize_t syncWrite(int fd, char *ptr, ssize_t size, long long timeout) {  in syncWrite()  argument
50     ssize_t nwritten, ret = size;  in syncWrite()
61         nwritten = write(fd,ptr,size);  in syncWrite()
66             size -= nwritten;  in syncWrite()
68         if (size == 0) return ret;  in syncWrite()
85 ssize_t syncRead(int fd, char *ptr, ssize_t size, long long timeout) {  in syncRead()  argument
90     if (size == 0) return 0;  in syncRead()
98         nread = read(fd,ptr,size);  in syncRead()
104             size -= nread;  in syncRead()
107         if (size == 0) return totread;  in syncRead()
125 ssize_t syncReadLine(int fd, char *ptr, ssize_t size, long long timeout) {  in syncReadLine()  argument
128     size--;  in syncReadLine()
129     while(size) {  in syncReadLine()
142         size--;  in syncReadLine()