43 	struct directory *dp;  in dinit()  local
65 	dp = (struct directory *)xcalloc(sizeof (struct directory), 1);  in dinit()
66 	dp->di_name = savestr(cp);  in dinit()
67 	dp->di_count = 0;  in dinit()
68 	dhead.di_next = dhead.di_prev = dp;  in dinit()
69 	dp->di_next = dp->di_prev = &dhead;  in dinit()
71 	dnewcwd(dp);  in dinit()
80 	struct directory *dp;  in dodirs()  local
96 	dp = dcwd;  in dodirs()
98 		if (dp == &dhead)  in dodirs()
101 			dtildepr(hp, dp->di_name);  in dodirs()
103 			printf("%t", dp->di_name);  in dodirs()
105 	} while ((dp = dp->di_prev) != dcwd);  in dodirs()
129 	struct directory *dp;  in dochngd()  local
141 	} else if ((dp = dfind(*v)) != 0) {  in dochngd()
143 		if (chdir_(dp->di_name) < 0)  in dochngd()
144 			Perror(dp->di_name);  in dochngd()
150 	dp = (struct directory *)xcalloc(sizeof (struct directory), 1);  in dochngd()
151 	dp->di_name = cp;  in dochngd()
152 	dp->di_count = 0;  in dochngd()
153 	dp->di_next = dcwd->di_next;  in dochngd()
154 	dp->di_prev = dcwd->di_prev;  in dochngd()
155 	dp->di_prev->di_next = dp;  in dochngd()
156 	dp->di_next->di_prev = dp;  in dochngd()
159 	dnewcwd(dp);  in dochngd()
168 	tchar *dp;  in dfollow()  local
205 			for (dp = buf, p = *cdp; *dp++ = *p++; )  in dfollow()
207 			dp[-1] = '/';  in dfollow()
208 			for (p = cp; *dp++ = *p++; )  in dfollow()
272 				for (dp = buf, p = *pv; *dp++ = *p++; )  in dfollow()
274 				dp[-1] = '/';  in dfollow()
275 				for (p = cp; *dp++ = *p++; )  in dfollow()
293 	dp = value(cp);  in dfollow()
294 	if ((dp[0] == '/' || dp[0] == '.') && chdir_(dp) >= 0) {  in dfollow()
296 		cp = savestr(dp);  in dfollow()
345 		dp = (tchar *)xalloc((unsigned)(cwdlen + len + 2) * sizeof (tchar));  in dfollow()
346 		for (p = dp, q = dcwd->di_name; *p++ = *q++; )  in dfollow()
355 		cp = dp;  in dfollow()
356 		dp += cwdlen;  in dfollow()
358 		dp = cp;  in dfollow()
359 	return dcanon(cp, dp);  in dfollow()
370 	struct directory *dp;  in dopushd()  local
377 		if ((dp = dcwd->di_prev) == &dhead)  in dopushd()
378 			dp = dhead.di_prev;  in dopushd()
379 		if (dp == dcwd)  in dopushd()
381 		if (chdir_(dp->di_name) < 0)  in dopushd()
382 			Perror(dp->di_name);  in dopushd()
383 		dp->di_prev->di_next = dp->di_next;  in dopushd()
384 		dp->di_next->di_prev = dp->di_prev;  in dopushd()
385 		dp->di_next = dcwd->di_next;  in dopushd()
386 		dp->di_prev = dcwd;  in dopushd()
387 		dcwd->di_next->di_prev = dp;  in dopushd()
388 		dcwd->di_next = dp;  in dopushd()
389 	} else if (dp = dfind(*v)) {  in dopushd()
390 		if (chdir_(dp->di_name) < 0)  in dopushd()
391 			Perror(dp->di_name);  in dopushd()
396 		dp = (struct directory *)xcalloc(sizeof (struct directory), 1);  in dopushd()
397 		dp->di_name = cp;  in dopushd()
398 		dp->di_count = 0;  in dopushd()
399 		dp->di_prev = dcwd;  in dopushd()
400 		dp->di_next = dcwd->di_next;  in dopushd()
401 		dcwd->di_next = dp;  in dopushd()
402 		dp->di_next->di_prev = dp;  in dopushd()
404 	dnewcwd(dp);  in dopushd()
413 	struct directory *dp;  in dfind()  local
429 	for (dp = dcwd; i != 0; i--) {  in dfind()
430 		if ((dp = dp->di_prev) == &dhead)  in dfind()
431 			dp = dp->di_prev;  in dfind()
432 		if (dp == dcwd)  in dfind()
435 	return (dp);  in dfind()
445 	struct directory *dp, *p;  in dopopd()  local
452 		dp = dcwd;  in dopopd()
453 	else if ((dp = dfind(*v)) == 0)  in dopopd()
455 	if (dp->di_prev == &dhead && dp->di_next == &dhead)  in dopopd()
457 	if (dp == dcwd) {  in dopopd()
458 		if ((p = dp->di_prev) == &dhead)  in dopopd()
463 	dp->di_prev->di_next = dp->di_next;  in dopopd()
464 	dp->di_next->di_prev = dp->di_prev;  in dopopd()
465 	if (dp == dcwd)  in dopopd()
469 	dfree(dp);  in dopopd()
476 dfree(struct directory *dp)  in dfree()  argument
482 	if (dp->di_count != 0)  in dfree()
483 		dp->di_next = dp->di_prev = 0;  in dfree()
485 		xfree(dp->di_name), xfree((tchar *)dp);  in dfree()
722 dnewcwd(struct directory *dp)  in dnewcwd()  argument
728 	dcwd = dp;  in dnewcwd()