On 04/04/2014 12:45 PM, Aneesh Kumar K.V wrote: > "Michael Kerrisk (man-pages)" <mtk.manpages@xxxxxxxxx> writes: >> The process receiving the handle can later perform operations >> on the symbolic link by converting the handle to a file descriptor using >> .BR open_by_handle_at () >> with the >> .BR O_PATH >> flag, and then passing the file descriptor as the >> .IR dirfd >> argument in system calls such as >> .BR readlinkat (2) >> and >> .BR fchownat (2). > > > You may want to specify that one need to pass AT_EMPTY_PATH in case of > fchownat ? readlinkat do take null names, because there is no flags > argument. For syscalls that take flags, to make it operate on fd, one > need to pass "" path name and a flag value of AT_EMPTY_PATH. Thanks. However, those details are covered in (recent versions of) the man pages for those system calls, and I'd prefer not to duplicate here. Thanks also for your other reply re O_PATH/-ELOOP. Otherwise, did all of the technical content in these pages look accurate? Cheers, Michael -- Michael Kerrisk Linux man-pages maintainer; http://www.kernel.org/doc/man-pages/ Linux/UNIX System Programming Training: http://man7.org/training/ -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
