writable           77 kernel/file.c      pipeclose(ff.pipe, ff.writable);
writable          139 kernel/file.c    if (f->writable == 0 || n < 0)
writable            5 kernel/file.h    char writable;
writable           40 kernel/pipe.c    (*f0)->writable = 0;
writable           44 kernel/pipe.c    (*f1)->writable = 1;
writable           59 kernel/pipe.c  pipeclose(struct pipe *pi, int writable)
writable           62 kernel/pipe.c    if (writable) {
writable          385 kernel/sysfile.c   f->writable = (omode & O_WRONLY) || (omode & O_RDWR);