1 #include "lib9.h" 2 3 long pread(int fd,void * buf,long n,vlong offset)4 pread(int fd, void *buf, long n, vlong offset) 5 { 6 if(seek(fd, offset, 0) < 0) 7 return -1; 8 return read(fd, buf, n); 9 } 10