On Tue, Mar 03, 2020 at 02:19:58PM +0000, David Howells wrote: > Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> wrote: > > > + fd = do_sys_open(dfd, filename, flags, 0000); > > + if (fd <= 0) > > + return fd; > > + > > + retval = ksys_read(fd, buffer, bufsize); > > + > > + __close_fd(current->files, fd); > > If you can use dentry_open() and vfs_read(), you might be able to avoid > dealing with file descriptors entirely. That might make it worth a syscall. Will poke at that... > You're going to be asked for writefile() you know ;-) Yup, that just got asked on this thread already :) greg k-h
