84 get_stats_for_obj(differ_info_t *di, const char *dsname, uint64_t obj,  in get_stats_for_obj()  argument
94 	error = ioctl(di->zhp->zfs_hdl->libzfs_fd, ZFS_IOC_OBJ_TO_STATS, &zc);  in get_stats_for_obj()
95 	di->zerr = errno;  in get_stats_for_obj()
100 		ASSERT(di->zerr == 0);  in get_stats_for_obj()
105 	if (di->zerr == EPERM) {  in get_stats_for_obj()
106 		(void) snprintf(di->errbuf, sizeof (di->errbuf),  in get_stats_for_obj()
112 		(void) snprintf(di->errbuf, sizeof (di->errbuf),  in get_stats_for_obj()
186 print_cmn(FILE *fp, differ_info_t *di, const char *file)  in print_cmn()  argument
188 	stream_bytes(fp, di->dsmnt);  in print_cmn()
193 print_rename(FILE *fp, differ_info_t *di, const char *old, const char *new,  in print_rename()  argument
196 	if (di->timestamped)  in print_rename()
201 	if (di->classify) {  in print_rename()
205 	print_cmn(fp, di, old);  in print_rename()
206 	if (di->scripted)  in print_rename()
210 	print_cmn(fp, di, new);  in print_rename()
215 print_link_change(FILE *fp, differ_info_t *di, int delta, const char *file,  in print_link_change()  argument
218 	if (di->timestamped)  in print_link_change()
223 	if (di->classify) {  in print_link_change()
227 	print_cmn(fp, di, file);  in print_link_change()
233 print_file(FILE *fp, differ_info_t *di, char type, const char *file,  in print_file()  argument
236 	if (di->timestamped)  in print_file()
241 	if (di->classify) {  in print_file()
245 	print_cmn(fp, di, file);  in print_file()
250 write_inuse_diffs_one(FILE *fp, differ_info_t *di, uint64_t dobj)  in write_inuse_diffs_one()  argument
258 	if (dobj == di->shares)  in write_inuse_diffs_one()
267 	fobjerr = get_stats_for_obj(di, di->fromsnap, dobj, fobjname,  in write_inuse_diffs_one()
269 	if (fobjerr && di->zerr != ENOENT && di->zerr != ENOTSUP)  in write_inuse_diffs_one()
272 	tobjerr = get_stats_for_obj(di, di->tosnap, dobj, tobjname,  in write_inuse_diffs_one()
274 	if (tobjerr && di->zerr != ENOENT && di->zerr != ENOTSUP)  in write_inuse_diffs_one()
281 		ASSERT(di->zerr == ENOENT || di->zerr == ENOTSUP);  in write_inuse_diffs_one()
282 		di->zerr = 0;  in write_inuse_diffs_one()
286 	di->zerr = 0; /* negate get_stats_for_obj() from side that failed */  in write_inuse_diffs_one()
297 			print_link_change(fp, di, change, tobjname, &tsb);  in write_inuse_diffs_one()
300 		print_file(fp, di, ZDIFF_ADDED, tobjname, &tsb);  in write_inuse_diffs_one()
304 			print_link_change(fp, di, change, fobjname, &fsb);  in write_inuse_diffs_one()
307 		print_file(fp, di, ZDIFF_REMOVED, fobjname, &fsb);  in write_inuse_diffs_one()
321 			print_link_change(fp, di, change,  in write_inuse_diffs_one()
324 			print_file(fp, di, ZDIFF_MODIFIED, fobjname, &tsb);  in write_inuse_diffs_one()
326 			print_rename(fp, di, fobjname, tobjname, &tsb);  in write_inuse_diffs_one()
331 		print_file(fp, di, ZDIFF_REMOVED, fobjname, &fsb);  in write_inuse_diffs_one()
332 		print_file(fp, di, ZDIFF_ADDED, tobjname, &tsb);  in write_inuse_diffs_one()
338 write_inuse_diffs(FILE *fp, differ_info_t *di, dmu_diff_record_t *dr)  in write_inuse_diffs()  argument
344 		if (err = write_inuse_diffs_one(fp, di, o))  in write_inuse_diffs()
351 describe_free(FILE *fp, differ_info_t *di, uint64_t object, char *namebuf,  in describe_free()  argument
356 	if (get_stats_for_obj(di, di->fromsnap, object, namebuf,  in describe_free()
359 		if (di->zerr == ENOENT && sb.zs_links == 0) {  in describe_free()
360 			di->zerr = 0;  in describe_free()
366 	print_file(fp, di, ZDIFF_REMOVED, namebuf, &sb);  in describe_free()
371 write_free_diffs(FILE *fp, differ_info_t *di, dmu_diff_record_t *dr)  in write_free_diffs()  argument
374 	libzfs_handle_t *lhdl = di->zhp->zfs_hdl;  in write_free_diffs()
377 	(void) strlcpy(zc.zc_name, di->fromsnap, sizeof (zc.zc_name));  in write_free_diffs()
380 	ASSERT(di->zerr == 0);  in write_free_diffs()
387 			if (zc.zc_obj == di->shares) {  in write_free_diffs()
394 			err = describe_free(fp, di, zc.zc_obj, fobjname,  in write_free_diffs()
401 			(void) snprintf(di->errbuf, sizeof (di->errbuf),  in write_free_diffs()
405 			di->zerr = errno;  in write_free_diffs()
409 	if (di->zerr)  in write_free_diffs()
417 	differ_info_t *di = arg;  in differ()  local
422 	if ((ofp = fdopen(di->outputfd, "w")) == NULL) {  in differ()
423 		di->zerr = errno;  in differ()
424 		(void) strerror_r(errno, di->errbuf, sizeof (di->errbuf));  in differ()
425 		(void) close(di->datafd);  in differ()
435 			rv = read(di->datafd, cp, len);  in differ()
441 			di->zerr = EPIPE;  in differ()
450 			err = write_free_diffs(ofp, di, &dr);  in differ()
453 			err = write_inuse_diffs(ofp, di, &dr);  in differ()
456 			di->zerr = EPIPE;  in differ()
460 		if (err || di->zerr)  in differ()
465 	(void) close(di->datafd);  in differ()
468 	if (di->zerr) {  in differ()
469 		ASSERT(di->zerr == EINVAL);  in differ()
470 		(void) snprintf(di->errbuf, sizeof (di->errbuf),  in differ()
479 find_shares_object(differ_info_t *di)  in find_shares_object()  argument
484 	(void) strlcpy(fullpath, di->dsmnt, MAXPATHLEN);  in find_shares_object()
488 		(void) snprintf(di->errbuf, sizeof (di->errbuf),  in find_shares_object()
490 		return (zfs_error(di->zhp->zfs_hdl, EZFS_DIFF, di->errbuf));  in find_shares_object()
493 	di->shares = (uint64_t)sb.st_ino;  in find_shares_object()
498 make_temp_snapshot(differ_info_t *di)  in make_temp_snapshot()  argument
500 	libzfs_handle_t *hdl = di->zhp->zfs_hdl;  in make_temp_snapshot()
505 	(void) strlcpy(zc.zc_name, di->ds, sizeof (zc.zc_name));  in make_temp_snapshot()
506 	zc.zc_cleanup_fd = di->cleanupfd;  in make_temp_snapshot()
511 			(void) snprintf(di->errbuf, sizeof (di->errbuf),  in make_temp_snapshot()
515 			return (zfs_error(hdl, EZFS_DIFF, di->errbuf));  in make_temp_snapshot()
517 			(void) snprintf(di->errbuf, sizeof (di->errbuf),  in make_temp_snapshot()
520 			return (zfs_standard_error(hdl, err, di->errbuf));  in make_temp_snapshot()
524 	di->tmpsnap = zfs_strdup(hdl, zc.zc_value);  in make_temp_snapshot()
525 	di->tosnap = zfs_asprintf(hdl, "%s@%s", di->ds, di->tmpsnap);  in make_temp_snapshot()
530 teardown_differ_info(differ_info_t *di)  in teardown_differ_info()  argument
532 	free(di->ds);  in teardown_differ_info()
533 	free(di->dsmnt);  in teardown_differ_info()
534 	free(di->fromsnap);  in teardown_differ_info()
535 	free(di->frommnt);  in teardown_differ_info()
536 	free(di->tosnap);  in teardown_differ_info()
537 	free(di->tmpsnap);  in teardown_differ_info()
538 	free(di->tomnt);  in teardown_differ_info()
539 	(void) close(di->cleanupfd);  in teardown_differ_info()
543 get_snapshot_names(differ_info_t *di, const char *fromsnap,  in get_snapshot_names()  argument
546 	libzfs_handle_t *hdl = di->zhp->zfs_hdl;  in get_snapshot_names()
562 		(void) snprintf(di->errbuf, sizeof (di->errbuf),  in get_snapshot_names()
569 			    di->errbuf));  in get_snapshot_names()
576 		di->fromsnap = zfs_strdup(hdl, fromsnap);  in get_snapshot_names()
577 		di->ds = zfs_strdup(hdl, fromsnap);  in get_snapshot_names()
578 		di->ds[fdslen] = '\0';  in get_snapshot_names()
581 		return (make_temp_snapshot(di));  in get_snapshot_names()
584 	(void) snprintf(di->errbuf, sizeof (di->errbuf),  in get_snapshot_names()
597 		return (zfs_error(hdl, EZFS_INVALIDNAME, di->errbuf));  in get_snapshot_names()
608 		di->ds = zfs_alloc(di->zhp->zfs_hdl, tdslen + 1);  in get_snapshot_names()
609 		(void) strncpy(di->ds, tosnap, tdslen);  in get_snapshot_names()
610 		di->ds[tdslen] = '\0';  in get_snapshot_names()
612 		zhp = zfs_open(hdl, di->ds, ZFS_TYPE_FILESYSTEM);  in get_snapshot_names()
628 			(void) snprintf(di->errbuf, sizeof (di->errbuf),  in get_snapshot_names()
631 			return (zfs_error(hdl, EZFS_INVALIDNAME, di->errbuf));  in get_snapshot_names()
636 		di->isclone = B_TRUE;  in get_snapshot_names()
637 		di->fromsnap = zfs_strdup(hdl, fromsnap);  in get_snapshot_names()
639 			di->tosnap = zfs_strdup(hdl, tosnap);  in get_snapshot_names()
641 			return (make_temp_snapshot(di));  in get_snapshot_names()
646 		di->ds = zfs_alloc(hdl, dslen + 1);  in get_snapshot_names()
647 		(void) strncpy(di->ds, fdslen ? fromsnap : tosnap, dslen);  in get_snapshot_names()
648 		di->ds[dslen] = '\0';  in get_snapshot_names()
650 		di->fromsnap = zfs_asprintf(hdl, "%s%s", di->ds, atptrf);  in get_snapshot_names()
652 			di->tosnap = zfs_asprintf(hdl, "%s%s", di->ds, atptrt);  in get_snapshot_names()
654 			return (make_temp_snapshot(di));  in get_snapshot_names()
661 get_mountpoint(differ_info_t *di, char *dsnm, char **mntpt)  in get_mountpoint()  argument
665 	mounted = is_mounted(di->zhp->zfs_hdl, dsnm, mntpt);  in get_mountpoint()
667 		(void) snprintf(di->errbuf, sizeof (di->errbuf),  in get_mountpoint()
670 		return (zfs_error(di->zhp->zfs_hdl, EZFS_BADTYPE, di->errbuf));  in get_mountpoint()
680 get_mountpoints(differ_info_t *di)  in get_mountpoints()  argument
688 	if (get_mountpoint(di, di->ds, &di->dsmnt) != 0)  in get_mountpoints()
691 	strptr = strchr(di->tosnap, '@');  in get_mountpoints()
693 	di->tomnt = zfs_asprintf(di->zhp->zfs_hdl, "%s%s%s", di->dsmnt,  in get_mountpoints()
696 	strptr = strchr(di->fromsnap, '@');  in get_mountpoints()
699 	frommntpt = di->dsmnt;  in get_mountpoints()
700 	if (di->isclone) {  in get_mountpoints()
705 		err = get_mountpoint(di, di->fromsnap, &mntpt);  in get_mountpoints()
712 	di->frommnt = zfs_asprintf(di->zhp->zfs_hdl, "%s%s%s", frommntpt,  in get_mountpoints()
715 	if (di->isclone)  in get_mountpoints()
723     const char *tosnap, differ_info_t *di)  in setup_differ_info()  argument
725 	di->zhp = zhp;  in setup_differ_info()
727 	di->cleanupfd = open(ZFS_DEV, O_RDWR|O_EXCL);  in setup_differ_info()
728 	VERIFY(di->cleanupfd >= 0);  in setup_differ_info()
730 	if (get_snapshot_names(di, fromsnap, tosnap) != 0)  in setup_differ_info()
733 	if (get_mountpoints(di) != 0)  in setup_differ_info()
736 	if (find_shares_object(di) != 0)  in setup_differ_info()
748 	differ_info_t di = { 0 };  in zfs_show_diffs()  local
756 	if (setup_differ_info(zhp, fromsnap, tosnap, &di)) {  in zfs_show_diffs()
757 		teardown_differ_info(&di);  in zfs_show_diffs()
763 		teardown_differ_info(&di);  in zfs_show_diffs()
767 	di.scripted = (flags & ZFS_DIFF_PARSEABLE);  in zfs_show_diffs()
768 	di.classify = (flags & ZFS_DIFF_CLASSIFY);  in zfs_show_diffs()
769 	di.timestamped = (flags & ZFS_DIFF_TIMESTAMP);  in zfs_show_diffs()
771 	di.outputfd = outfd;  in zfs_show_diffs()
772 	di.datafd = pipefd[0];  in zfs_show_diffs()
774 	if (pthread_create(&tid, NULL, differ, &di)) {  in zfs_show_diffs()
778 		teardown_differ_info(&di);  in zfs_show_diffs()
784 	(void) strlcpy(zc.zc_value, di.fromsnap, strlen(di.fromsnap) + 1);  in zfs_show_diffs()
785 	(void) strlcpy(zc.zc_name, di.tosnap, strlen(di.tosnap) + 1);  in zfs_show_diffs()
800 		} else if (errno != EPIPE || di.zerr == 0) {  in zfs_show_diffs()
806 		teardown_differ_info(&di);  in zfs_show_diffs()
807 		if (di.zerr != 0 && di.zerr != EPIPE) {  in zfs_show_diffs()
808 			zfs_error_aux(zhp->zfs_hdl, strerror(di.zerr));  in zfs_show_diffs()
809 			return (zfs_error(zhp->zfs_hdl, EZFS_DIFF, di.errbuf));  in zfs_show_diffs()
818 	if (di.zerr != 0) {  in zfs_show_diffs()
819 		zfs_error_aux(zhp->zfs_hdl, strerror(di.zerr));  in zfs_show_diffs()
820 		return (zfs_error(zhp->zfs_hdl, EZFS_DIFF, di.errbuf));  in zfs_show_diffs()
822 	teardown_differ_info(&di);  in zfs_show_diffs()