ref: 57d690c482c7e5f57608befe7cb04797b1bff153
dir: /sys/src/ape/lib/ap/plan9/lseek.c/
#include "lib.h" #include <unistd.h> #include <errno.h> #include "sys9.h" /* * BUG: errno mapping */ off_t lseek(int d, off_t offset, int whence) { long long n; int flags; flags = _fdinfo[d].flags; if(flags&(FD_BUFFERED|FD_BUFFEREDX|FD_ISTTY)) { errno = ESPIPE; return -1; } n = _SEEK(d, offset, whence); if(n < 0) _syserrno(); return n; }