1 /* $Header: /p/tcsh/cvsroot/tcsh/sh.dir.c,v 3.80 2007/05/08 21:05:34 christos Exp $ */
3 * sh.dir.c: Directory manipulation functions
6 * Copyright (c) 1980, 1991 The Regents of the University of California.
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 * 3. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36 RCSID("$tcsh: sh.dir.c,v 3.80 2007/05/08 21:05:34 christos Exp $")
39 * C Shell - directory management
42 static Char *agetcwd (void);
43 static void dstart (const char *);
44 static struct directory *dfind (Char *);
45 static Char *dfollow (Char *, int);
46 static void printdirs (int);
47 static Char *dgoto (Char *);
48 static void dnewcwd (struct directory *, int);
49 static void dset (Char *);
50 static void dextract (struct directory *);
51 static int skipargs (Char ***, const char *,
53 static void dgetstack (void);
55 static struct directory dhead INIT_ZERO_STRUCT; /* "head" of loop */
56 static int printd; /* force name to be printed */
58 int bequiet = 0; /* do not print dir stack -strike */
69 while (getcwd(buf, len) == NULL) {
79 buf = xrealloc(buf, len);
91 dstart(const char *from)
93 xprintf(CGETS(12, 1, "%s: Trying to start from \"%s\"\n"), progname, from);
97 * dinit - initialize current working directory
103 struct directory *dp;
105 /* Don't believe the login shell home, because it may be a symlink */
108 xprintf("%s: %s\n", progname, strerror(errno));
110 char *xcp = short2str(hp);
112 if (chdir(xcp) == -1)
121 if (chdir("/") == -1)
122 /* I am not even try to print an error message! */
129 struct stat swd, shp;
132 swd_ok = stat(short2str(tcp), &swd) == 0;
134 * See if $HOME is the working directory we got and use that
136 if (swd_ok && hp && *hp && stat(short2str(hp), &shp) != -1 &&
137 DEV_DEV_COMPARE(swd.st_dev, shp.st_dev) &&
138 swd.st_ino == shp.st_ino)
144 * use PWD if we have it (for subshells)
146 if (swd_ok && (cwd = getenv("PWD")) != NULL) {
147 if (stat(cwd, &shp) != -1 &&
148 DEV_DEV_COMPARE(swd.st_dev, shp.st_dev) &&
149 swd.st_ino == shp.st_ino) {
151 cleanup_push(tcp, xfree);
154 cleanup_push(tcp, xfree);
155 cp = dcanon(tcp, STRNULL);
160 cleanup_push(tcp, xfree);
161 cp = dcanon(tcp, STRNULL);
167 dp = xcalloc(sizeof(struct directory), 1);
170 dhead.di_next = dhead.di_prev = dp;
171 dp->di_next = dp->di_prev = &dhead;
174 setcopy(STRdirstack, dp->di_name, VAR_READWRITE|VAR_NOGLOB);
181 * Don't call set() directly cause if the directory contains ` or
182 * other junk characters glob will fail.
184 setcopy(STRowd, varval(STRcwd), VAR_READWRITE|VAR_NOGLOB);
185 setcopy(STRcwd, dp, VAR_READWRITE|VAR_NOGLOB);
189 #define DIR_PRINT 0x01 /* -p */
190 #define DIR_LONG 0x02 /* -l */
191 #define DIR_VERT 0x04 /* -v */
192 #define DIR_LINE 0x08 /* -n */
193 #define DIR_SAVE 0x10 /* -S */
194 #define DIR_LOAD 0x20 /* -L */
195 #define DIR_CLEAR 0x40 /* -c */
196 #define DIR_OLD 0x80 /* - */
199 skipargs(Char ***v, const char *dstr, const char *str)
203 int dflag = 0, loop = 1;
204 for (n++; loop && *n != NULL && (*n)[0] == '-'; n++)
205 if (*(s = &((*n)[1])) == '\0') /* test for bare "-" argument */
209 while (*s != '\0') /* examine flags */
211 if ((p = strchr(dstr, *s++)) != NULL)
212 dflag |= (1 << (p - dstr));
214 stderror(ERR_DIRUS, short2str(**v), dstr, str);
217 if (*n && (dflag & DIR_OLD))
218 stderror(ERR_DIRUS, short2str(**v), dstr, str);
220 /* make -l, -v, and -n imply -p */
221 if (dflag & (DIR_LONG|DIR_VERT|DIR_LINE))
227 * dodirs - list all directories in directory loop
231 dodirs(Char **v, struct command *c)
233 static const char flags[] = "plvnSLc";
234 int dflag = skipargs(&v, flags, "");
237 if ((dflag & DIR_CLEAR) != 0) {
238 struct directory *dp, *fdp;
239 for (dp = dcwd->di_next; dp != dcwd; ) {
245 dhead.di_next = dhead.di_prev = dp;
246 dp->di_next = dp->di_prev = &dhead;
248 if ((dflag & DIR_LOAD) != 0)
250 else if ((dflag & DIR_SAVE) != 0)
253 if (*v && (dflag & (DIR_SAVE|DIR_LOAD)))
256 if (*v != NULL || (dflag & DIR_OLD))
257 stderror(ERR_DIRUS, "dirs", flags, "");
258 if ((dflag & (DIR_CLEAR|DIR_LOAD|DIR_SAVE)) == 0 || (dflag & DIR_PRINT))
265 struct directory *dp;
275 if (dflag & DIR_VERT) {
276 xprintf("%d\t", idx++);
281 if (!(dflag & DIR_LONG) && (user = getusername(&s)) != NULL)
282 len = (int) (Strlen(user) + Strlen(s) + 2);
284 len = (int) (Strlen(s) + 1);
287 if ((dflag & DIR_LINE) && cur >= TermH - 1 && len < TermH) {
292 xprintf("~%S", user);
293 xprintf("%-S%c", s, (dflag & DIR_VERT) ? '\n' : ' ');
294 } while ((dp = dp->di_prev) != dcwd);
295 if (!(dflag & DIR_VERT))
303 if ((user = getusername(&dir)) != NULL)
304 xprintf("~%-S%S", user, dir);
312 struct directory *d = dcwd;
317 d->di_name = dcanon(d->di_name, STRNULL);
318 } while ((d = d->di_prev) != dcwd);
325 * The path will be normalized if it
327 * 2) or starts with "../",
328 * 3) or ends with "/..",
329 * 4) or contains the string "/../",
330 * then it will be normalized, unless those strings are quoted.
331 * Otherwise, a copy is made and sent back.
334 dnormalize(const Char *cp, int expnd)
337 /* return true if dp is of the form "../xxx" or "/../xxx" */
338 #define IS_DOTDOT(sp, p) (ISDOTDOT(p) && ((p) == (sp) || *((p) - 1) == '/'))
339 #define IS_DOT(sp, p) (ISDOT(p) && ((p) == (sp) || *((p) - 1) == '/'))
343 struct Strbuf buf = Strbuf_INIT;
346 const Char *start = cp;
347 # ifdef HAVE_SLASHSLASH
349 # endif /* HAVE_SLASHSLASH */
352 * count the number of "../xxx" or "xxx/../xxx" in the path
354 for ( ; *cp && *(cp + 1); cp++)
355 if (IS_DOTDOT(start, cp))
359 * if none, we are done.
362 return (Strsave(start));
367 * We disable this test because:
368 * cd /tmp; mkdir dir1 dir2; cd dir2; ln -s /tmp/dir1; cd dir1;
369 * echo ../../dir1 does not expand. We had enabled this before
370 * because it was bothering people with expansions in compilation
371 * lines like -I../../foo. Maybe we need some kind of finer grain
374 * If the path doesn't exist, we are done too.
376 if (lstat(short2str(start), &sb) != 0 && errno == ENOENT)
377 return (Strsave(start));
380 cwd = xmalloc((Strlen(dcwd->di_name) + 3) * sizeof(Char));
381 (void) Strcpy(cwd, dcwd->di_name);
384 * If the path starts with a slash, we are not relative to
385 * the current working directory.
387 if (ABSOLUTEP(start))
389 # ifdef HAVE_SLASHSLASH
390 slashslash = cwd[0] == '/' && cwd[1] == '/';
391 # endif /* HAVE_SLASHSLASH */
394 * Ignore . and count ..'s
401 if (IS_DOT(start, cp)) {
405 else if (IS_DOTDOT(start, cp)) {
407 break; /* finish analyzing .././../xxx/[..] */
414 Strbuf_append1(&buf, *cp++);
416 Strbuf_terminate(&buf);
418 if ((dp = Strrchr(cwd, '/')) != NULL) {
419 # ifdef HAVE_SLASHSLASH
422 # endif /* HAVE_SLASHSLASH */
429 if (!*cwd) { /* too many ..'s, starts with "/" */
431 # ifdef HAVE_SLASHSLASH
433 * Only append another slash, if already the former cwd
434 * was in a double-slash path.
436 cwd[1] = slashslash ? '/' : '\0';
438 # else /* !HAVE_SLASHSLASH */
440 # endif /* HAVE_SLASHSLASH */
442 # ifdef HAVE_SLASHSLASH
443 else if (slashslash && cwd[1] == '\0') {
447 # endif /* HAVE_SLASHSLASH */
453 if (TRM(cwd[i - 1]) != '/') {
457 dp = Strspl(cwd, TRM(buf.s[0]) == '/' ? &buf.s[1] : buf.s);
461 if (TRM(cwd[i]) == '/')
464 /* Reduction of ".." following the stuff we collected in buf
465 * only makes sense if the directory item in buf really exists.
466 * Avoid reduction of "-I../.." (typical compiler call) to ""
467 * or "/usr/nonexistant/../bin" to "/usr/bin":
471 if (0 != stat(short2str(cwd), &exists)) {
474 return Strsave(start);
477 } while (*cp != '\0');
487 * dochngd - implement chdir command.
491 dochngd(Char **v, struct command *c)
494 struct directory *dp;
495 int dflag = skipargs(&v, "plvn", "[-|<dir>]");
499 cp = (dflag & DIR_OLD) ? varval(STRowd) : *v;
502 if ((cp = varval(STRhome)) == STRNULL || *cp == 0)
503 stderror(ERR_NAME | ERR_NOHOMEDIR);
504 if (chdir(short2str(cp)) < 0)
505 stderror(ERR_NAME | ERR_CANTCHANGE);
508 else if ((dflag & DIR_OLD) == 0 && v[1] != NULL) {
509 stderror(ERR_NAME | ERR_TOOMANY);
513 else if ((dp = dfind(cp)) != 0) {
517 if (chdir(tmp = short2str(dp->di_name)) < 0)
518 stderror(ERR_SYSTEM, tmp, strerror(errno));
519 dcwd->di_prev->di_next = dcwd->di_next;
520 dcwd->di_next->di_prev = dcwd->di_prev;
526 if ((cp = dfollow(cp, dflag & DIR_OLD)) == NULL)
528 dp = xcalloc(sizeof(struct directory), 1);
531 dp->di_next = dcwd->di_next;
532 dp->di_prev = dcwd->di_prev;
533 dp->di_prev->di_next = dp;
534 dp->di_next->di_prev = dp;
549 cwdlen = Strlen(dcwd->di_name);
550 if (cwdlen == 1) /* root */
552 dp = xmalloc((cwdlen + Strlen(cp) + 2) * sizeof(Char));
553 for (p = dp, q = dcwd->di_name; (*p++ = *q++) != '\0';)
558 p--; /* don't add a / after root */
567 #if defined(WINNT_NATIVE)
569 #elif defined(__CYGWIN__)
570 if (ABSOLUTEP(cp) && cp[1] == ':') { /* Only DOS paths are treated that way */
573 cleanup_push(cp, xfree);
574 ret = dcanon(cp, dp);
578 #else /* !WINNT_NATIVE */
579 cleanup_push(cp, xfree);
580 ret = dcanon(cp, dp);
583 #endif /* WINNT_NATIVE */
588 * dfollow - change to arg directory; fall back on cdpath if not valid
591 dfollow(Char *cp, int old)
597 cp = old ? Strsave(cp) : globone(cp, G_ERROR);
598 cleanup_push(cp, xfree);
600 if (Strchr(cp, '`')) {
602 if (chdir(dptr = short2str(cp)) < 0)
603 stderror(ERR_SYSTEM, dptr, strerror(errno));
605 cleanup_push(dp, xfree);
611 stderror(ERR_SYSTEM, dptr, strerror(errno));
616 * if we are ignoring symlinks, try to fix relatives now.
617 * if we are expading symlinks, it should be done by now.
619 dp = dnormalize(cp, symlinks == SYM_IGNORE);
620 if (chdir(short2str(dp)) >= 0) {
626 if (chdir(short2str(cp)) >= 0) {
631 else if (errno != ENOENT && errno != ENOTDIR) {
635 stderror(ERR_SYSTEM, short2str(cp), strerror(err));
640 if (cp[0] != '/' && !prefix(STRdotsl, cp) && !prefix(STRdotdotsl, cp)
641 && (c = adrof(STRcdpath)) && c->vec != NULL) {
642 struct Strbuf buf = Strbuf_INIT;
645 for (cdp = c->vec; *cdp; cdp++) {
647 Strbuf_append(&buf, *cdp);
648 Strbuf_append1(&buf, '/');
649 Strbuf_append(&buf, cp);
650 Strbuf_terminate(&buf);
652 * We always want to fix the directory here
653 * If we are normalizing symlinks
655 dp = dnormalize(buf.s, symlinks == SYM_IGNORE ||
656 symlinks == SYM_EXPAND);
657 if (chdir(short2str(dp)) >= 0) {
663 else if (chdir(short2str(cp)) >= 0) {
675 if ((dp[0] == '/' || dp[0] == '.') && chdir(short2str(dp)) >= 0) {
682 * on login source of ~/.cshdirs, errors are eaten. the dir stack is all
683 * directories we could get to.
686 stderror(ERR_SYSTEM, short2str(cp), strerror(serrno));
693 * dopushd - push new directory onto directory stack.
694 * with no arguments exchange top and second.
695 * with numeric argument (+n) bring it to top.
699 dopushd(Char **v, struct command *c)
701 struct directory *dp;
703 int dflag = skipargs(&v, "plvn", " [-|<dir>|+<n>]");
707 cp = (dflag & DIR_OLD) ? varval(STRowd) : *v;
710 if (adrof(STRpushdtohome)) {
711 if ((cp = varval(STRhome)) == STRNULL || *cp == 0)
712 stderror(ERR_NAME | ERR_NOHOMEDIR);
713 if (chdir(short2str(cp)) < 0)
714 stderror(ERR_NAME | ERR_CANTCHANGE);
715 if ((cp = dfollow(cp, dflag & DIR_OLD)) == NULL)
717 dp = xcalloc(sizeof(struct directory), 1);
721 dp->di_next = dcwd->di_next;
723 dp->di_next->di_prev = dp;
728 if ((dp = dcwd->di_prev) == &dhead)
731 stderror(ERR_NAME | ERR_NODIR);
732 if (chdir(tmp = short2str(dp->di_name)) < 0)
733 stderror(ERR_SYSTEM, tmp, strerror(errno));
734 dp->di_prev->di_next = dp->di_next;
735 dp->di_next->di_prev = dp->di_prev;
736 dp->di_next = dcwd->di_next;
738 dcwd->di_next->di_prev = dp;
742 else if ((dflag & DIR_OLD) == 0 && v[1] != NULL) {
743 stderror(ERR_NAME | ERR_TOOMANY);
747 else if ((dp = dfind(cp)) != NULL) {
750 if (chdir(tmp = short2str(dp->di_name)) < 0)
751 stderror(ERR_SYSTEM, tmp, strerror(errno));
753 * kfk - 10 Feb 1984 - added new "extraction style" pushd +n
755 if (adrof(STRdextract))
761 if ((ccp = dfollow(cp, dflag & DIR_OLD)) == NULL)
763 dp = xcalloc(sizeof(struct directory), 1);
767 dp->di_next = dcwd->di_next;
769 dp->di_next->di_prev = dp;
775 * dfind - find a directory if specified by numeric (+n) argument
777 static struct directory *
780 struct directory *dp;
786 for (ep = cp; Isdigit(*ep); ep++)
793 for (dp = dcwd; i != 0; i--) {
794 if ((dp = dp->di_prev) == &dhead)
797 stderror(ERR_NAME | ERR_DEEP);
803 * dopopd - pop a directory out of the directory stack
804 * with a numeric argument just discard it.
808 dopopd(Char **v, struct command *c)
811 struct directory *dp, *p = NULL;
812 int dflag = skipargs(&v, "plvn", " [-|+<n>]");
816 cp = (dflag & DIR_OLD) ? varval(STRowd) : *v;
820 else if ((dflag & DIR_OLD) == 0 && v[1] != NULL) {
821 stderror(ERR_NAME | ERR_TOOMANY);
825 else if ((dp = dfind(cp)) == 0)
826 stderror(ERR_NAME | ERR_BADDIR);
827 if (dp->di_prev == &dhead && dp->di_next == &dhead)
828 stderror(ERR_NAME | ERR_EMPTY);
832 if ((p = dp->di_prev) == &dhead)
834 if (chdir(tmp = short2str(p->di_name)) < 0)
835 stderror(ERR_SYSTEM, tmp, strerror(errno));
837 dp->di_prev->di_next = dp->di_next;
838 dp->di_next->di_prev = dp->di_prev;
849 * dfree - free the directory (or keep it if it still has ref count)
852 dfree(struct directory *dp)
855 if (dp->di_count != 0) {
856 dp->di_next = dp->di_prev = 0;
865 * dcanon - canonicalize the pathname, removing excess ./ and ../ etc.
866 * we are of course assuming that the file system is standardly
867 * constructed (always have ..'s, directories have links)
870 dcanon(Char *cp, Char *p)
873 Char *p1, *p2; /* general purpose */
875 #ifdef HAVE_SLASHSLASH
877 #endif /* HAVE_SLASHSLASH */
880 #ifdef S_IFLNK /* if we have symlinks */
889 * christos: if the path given does not start with a slash prepend cwd. If
890 * cwd does not start with a slash or the result would be too long try to
893 if (!ABSOLUTEP(cp)) {
898 if (p1 == STRNULL || !ABSOLUTEP(p1)) {
899 Char *new_cwd = agetcwd();
901 if (new_cwd == NULL) {
902 xprintf("%s: %s\n", progname, strerror(errno));
903 setcopy(STRcwd, str2short("/"), VAR_READWRITE|VAR_NOGLOB);
906 setv(STRcwd, new_cwd, VAR_READWRITE|VAR_NOGLOB);
910 tmpdir = xmalloc((len + clen + 2) * sizeof (*tmpdir));
911 (void) Strcpy(tmpdir, p1);
912 (void) Strcat(tmpdir, STRslash);
913 (void) Strcat(tmpdir, cp);
918 #ifdef HAVE_SLASHSLASH
919 slashslash = (cp[0] == '/' && cp[1] == '/');
920 #endif /* HAVE_SLASHSLASH */
922 while (*p) { /* for each component */
923 sp = p; /* save slash address */
924 while (*++p == '/') /* flush extra slashes */
927 for (p1 = sp, p2 = p; (*p1++ = *p2++) != '\0';)
929 p = sp; /* save start of component */
932 while (*++p) /* find next slash or end of path */
939 #ifdef HAVE_SLASHSLASH
940 if (&cp[1] == sp && sp[0] == '.' && sp[1] == '.' && sp[2] == '\0')
942 #endif /* HAVE_SLASHSLASH */
943 if (*sp == '\0') { /* if component is null */
944 if (--sp == cp) /* if path is one char (i.e. /) */
949 else if (sp[0] == '.' && sp[1] == 0) {
951 for (p1 = sp, p2 = p + 1; (*p1++ = *p2++) != '\0';)
960 else if (sp[0] == '.' && sp[1] == '.' && sp[2] == 0) {
962 * We have something like "yyy/xxx/..", where "yyy" can be null or
963 * a path starting at /, and "xxx" is a single component. Before
964 * compressing "xxx/..", we want to expand "yyy/xxx", if it is a
967 *--sp = 0; /* form the pathname for readlink */
968 #ifdef S_IFLNK /* if we have symlinks */
969 if (sp != cp && /* symlinks != SYM_IGNORE && */
970 (tlink = areadlink(short2str(cp))) != NULL) {
971 mlink = str2short(tlink);
977 * Point p to the '/' in "/..", and restore the '/'.
982 * Relative path, expand it between the "yyy/" and the
983 * "/..". First, back sp up to the character past "yyy/".
990 * New length is "yyy/" + mlink + "/.." and rest
992 p1 = newcp = xmalloc(((sp - cp) + Strlen(mlink) +
993 Strlen(p) + 1) * sizeof(Char));
995 * Copy new path into newcp
997 for (p2 = cp; (*p1++ = *p2++) != '\0';)
999 for (p1--, p2 = mlink; (*p1++ = *p2++) != '\0';)
1001 for (p1--, p2 = p; (*p1++ = *p2++) != '\0';)
1004 * Restart canonicalization at expanded "/xxx".
1006 p = sp - cp - 1 + newcp;
1009 newcp = Strspl(mlink, p);
1011 * Restart canonicalization at beginning
1017 #ifdef HAVE_SLASHSLASH
1018 slashslash = (cp[0] == '/' && cp[1] == '/');
1019 #endif /* HAVE_SLASHSLASH */
1020 continue; /* canonicalize the link */
1022 #endif /* S_IFLNK */
1025 while (*--sp != '/')
1028 for (p1 = sp + 1, p2 = p + 1; (*p1++ = *p2++) != '\0';)
1037 else { /* normal dir name (not . or .. or nothing) */
1039 #ifdef S_IFLNK /* if we have symlinks */
1040 if (sp != cp && symlinks == SYM_CHASE &&
1041 (tlink = areadlink(short2str(cp))) != NULL) {
1042 mlink = str2short(tlink);
1052 * point sp to p (rather than backing up).
1056 if (*mlink != '/') {
1058 * Relative path, expand it between the "yyy/" and the
1059 * remainder. First, back sp up to the character past
1062 while (*--sp != '/')
1067 * New length is "yyy/" + mlink + "/.." and rest
1069 p1 = newcp = xmalloc(((sp - cp) + Strlen(mlink) +
1070 Strlen(p) + 1) * sizeof(Char));
1072 * Copy new path into newcp
1074 for (p2 = cp; (*p1++ = *p2++) != '\0';)
1076 for (p1--, p2 = mlink; (*p1++ = *p2++) != '\0';)
1078 for (p1--, p2 = p; (*p1++ = *p2++) != '\0';)
1081 * Restart canonicalization at expanded "/xxx".
1083 p = sp - cp - 1 + newcp;
1086 newcp = Strspl(mlink, p);
1088 * Restart canonicalization at beginning
1094 #ifdef HAVE_SLASHSLASH
1095 slashslash = (cp[0] == '/' && cp[1] == '/');
1096 #endif /* HAVE_SLASHSLASH */
1097 continue; /* canonicalize the mlink */
1099 #endif /* S_IFLNK */
1109 p1 = varval(STRhome);
1112 * See if we're not in a subdir of STRhome
1114 if (p1 && *p1 == '/' && (Strncmp(p1, cp, cc) != 0 ||
1115 (cp[cc] != '/' && cp[cc] != '\0'))) {
1116 static ino_t home_ino = (ino_t) -1;
1117 static dev_t home_dev = (dev_t) -1;
1118 static Char *home_ptr = NULL;
1119 struct stat statbuf;
1124 * Get dev and ino of STRhome
1126 if (home_ptr != p1 &&
1127 stat(short2str(p1), &statbuf) != -1) {
1128 home_dev = statbuf.st_dev;
1129 home_ino = statbuf.st_ino;
1133 * Start comparing dev & ino backwards
1135 p2 = copy = Strsave(cp);
1137 while (*p2 && stat(short2str(p2), &statbuf) != -1) {
1138 if (DEV_DEV_COMPARE(statbuf.st_dev, home_dev) &&
1139 statbuf.st_ino == home_ino) {
1143 if ((sp = Strrchr(p2, '/')) != NULL)
1147 * See if we found it
1151 * Use STRhome to make '~' work
1153 newcp = Strspl(p1, cp + Strlen(p2));
1159 #endif /* S_IFLNK */
1161 #ifdef HAVE_SLASHSLASH
1164 p = xmalloc((Strlen(cp) + 2) * sizeof(Char));
1166 (void) Strcpy(&p[1], cp);
1171 if (cp[1] == '/' && cp[2] == '/') {
1172 for (p1 = &cp[1], p2 = &cp[2]; (*p1++ = *p2++) != '\0';)
1175 #endif /* HAVE_SLASHSLASH */
1181 * dnewcwd - make a new directory in the loop the current one
1184 dnewcwd(struct directory *dp, int dflag)
1188 if (adrof(STRdunique)) {
1189 struct directory *dn;
1191 for (dn = dhead.di_prev; dn != &dhead; dn = dn->di_prev)
1192 if (dn != dp && Strcmp(dn->di_name, dp->di_name) == 0) {
1193 dn->di_next->di_prev = dn->di_prev;
1194 dn->di_prev->di_next = dn->di_next;
1200 dset(dcwd->di_name);
1202 print = printd; /* if printd is set, print dirstack... */
1203 if (adrof(STRpushdsilent)) /* but pushdsilent overrides printd... */
1205 if (dflag & DIR_PRINT) /* but DIR_PRINT overrides pushdsilent... */
1207 if (bequiet) /* and bequiet overrides everything */
1211 cwd_cmd(); /* PWP: run the defined cwd command */
1219 struct directory *dn, *dp;
1221 if ((vp = adrof(STRdirstack)) == NULL || vp->vec == NULL)
1224 /* Free the whole stack */
1225 while ((dn = dhead.di_prev) != &dhead) {
1226 dn->di_next->di_prev = dn->di_prev;
1227 dn->di_prev->di_next = dn->di_next;
1232 /* thread the current working directory */
1233 dhead.di_prev = dhead.di_next = dcwd;
1234 dcwd->di_next = dcwd->di_prev = &dhead;
1236 /* put back the stack */
1237 for (cp = vp->vec; cp && *cp && **cp; cp++) {
1238 dp = xcalloc(sizeof(struct directory), 1);
1239 dp->di_name = Strsave(*cp);
1242 dp->di_next = dcwd->di_next;
1244 dp->di_next->di_prev = dp;
1246 dgetstack(); /* Make $dirstack reflect the current state */
1254 struct directory *dn;
1256 if (adrof(STRdirstack) == NULL)
1259 for (dn = dhead.di_prev; dn != &dhead; dn = dn->di_prev, i++)
1261 dbp = dblk = xmalloc((i + 1) * sizeof(Char *));
1262 for (dn = dhead.di_prev; dn != &dhead; dn = dn->di_prev, dbp++)
1263 *dbp = Strsave(dn->di_name);
1265 cleanup_push(dblk, blk_cleanup);
1266 setq(STRdirstack, dblk, &shvhed, VAR_READWRITE);
1267 cleanup_ignore(dblk);
1268 cleanup_until(dblk);
1272 * getstakd - added by kfk 17 Jan 1984
1273 * Support routine for the stack hack. Finds nth directory in
1274 * the directory stack, or finds last directory in stack.
1279 struct directory *dp;
1282 if (cnt < 0) { /* < 0 ==> last dir requested. */
1300 * Karl Kleinpaste - 10 Feb 1984
1301 * Added dextract(), which is used in pushd +n.
1302 * Instead of just rotating the entire stack around, dextract()
1303 * lets the user have the nth dir extracted from its current
1304 * position, and pushes it onto the top.
1307 dextract(struct directory *dp)
1311 dp->di_next->di_prev = dp->di_prev;
1312 dp->di_prev->di_next = dp->di_next;
1313 dp->di_next = dcwd->di_next;
1315 dp->di_next->di_prev = dp;
1320 bequiet_cleanup(void *dummy)
1327 loaddirs(Char *fname)
1329 static Char *loaddirs_cmd[] = { STRsource, NULL, NULL };
1332 cleanup_push(&bequiet, bequiet_cleanup);
1334 loaddirs_cmd[1] = fname;
1335 else if ((fname = varval(STRdirsfile)) != STRNULL)
1336 loaddirs_cmd[1] = fname;
1338 loaddirs_cmd[1] = STRtildotdirs;
1339 dosource(loaddirs_cmd, NULL);
1340 cleanup_until(&bequiet);
1344 * create a file called ~/.cshdirs which has a sequence
1345 * of pushd commands which will restore the dir stack to
1346 * its state before exit/logout. remember that the order
1347 * is reversed in the file because we are pushing.
1351 recdirs(Char *fname, int def)
1353 int fp, ftmp, oldidfds;
1355 struct directory *dp;
1358 struct Strbuf qname = Strbuf_INIT;
1360 if (fname == NULL && !def)
1363 if (fname == NULL) {
1364 if ((fname = varval(STRdirsfile)) == STRNULL)
1365 fname = Strspl(varval(STRhome), &STRtildotdirs[1]);
1367 fname = Strsave(fname);
1370 fname = globone(fname, G_ERROR);
1371 cleanup_push(fname, xfree);
1373 if ((fp = xcreat(short2str(fname), 0600)) == -1) {
1374 cleanup_until(fname);
1378 if ((snum = varval(STRsavedirs)) == STRNULL || snum[0] == '\0')
1379 num = (unsigned int) ~0;
1381 num = (unsigned int) atoi(short2str(snum));
1388 cleanup_push(&qname, Strbuf_cleanup);
1396 xprintf("cd %S\n", quote_meta(&qname, dp->di_name));
1399 xprintf("pushd %S\n", quote_meta(&qname, dp->di_name));
1404 } while ((dp = dp->di_next) != dcwd->di_next);
1409 cleanup_until(fname);