1 /* $Header: /p/tcsh/cvsroot/tcsh/sh.dir.c,v 3.84 2014/10/28 18:40:46 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 3.84 2014/10/28 18:40:46 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 */
207 else if ((*n)[1] == '-' && (*n)[2] == '\0') { /* test for -- */
212 while (*s != '\0') /* examine flags */ {
213 if ((p = strchr(dstr, *s++)) != NULL)
214 dflag |= (1 << (p - dstr));
216 stderror(ERR_DIRUS, short2str(**v), dstr, str);
219 if (*n && (dflag & DIR_OLD))
220 stderror(ERR_DIRUS, short2str(**v), dstr, str);
222 /* make -l, -v, and -n imply -p */
223 if (dflag & (DIR_LONG|DIR_VERT|DIR_LINE))
229 * dodirs - list all directories in directory loop
233 dodirs(Char **v, struct command *c)
235 static const char flags[] = "plvnSLc";
236 int dflag = skipargs(&v, flags, "");
239 if ((dflag & DIR_CLEAR) != 0) {
240 struct directory *dp, *fdp;
241 for (dp = dcwd->di_next; dp != dcwd; ) {
247 dhead.di_next = dhead.di_prev = dp;
248 dp->di_next = dp->di_prev = &dhead;
250 if ((dflag & DIR_LOAD) != 0)
252 else if ((dflag & DIR_SAVE) != 0)
255 if (*v && (dflag & (DIR_SAVE|DIR_LOAD)))
258 if (*v != NULL || (dflag & DIR_OLD))
259 stderror(ERR_DIRUS, "dirs", flags, "");
260 if ((dflag & (DIR_CLEAR|DIR_LOAD|DIR_SAVE)) == 0 || (dflag & DIR_PRINT))
267 struct directory *dp;
277 if (dflag & DIR_VERT) {
278 xprintf("%d\t", idx++);
283 if (!(dflag & DIR_LONG) && (user = getusername(&s)) != NULL)
284 len = (int) (Strlen(user) + Strlen(s) + 2);
286 len = (int) (Strlen(s) + 1);
289 if ((dflag & DIR_LINE) && cur >= TermH - 1 && len < TermH) {
294 xprintf("~%S", user);
295 xprintf("%-S%c", s, (dflag & DIR_VERT) ? '\n' : ' ');
296 } while ((dp = dp->di_prev) != dcwd);
297 if (!(dflag & DIR_VERT))
305 if ((user = getusername(&dir)) != NULL)
306 xprintf("~%-S%S", user, dir);
314 struct directory *d = dcwd;
319 d->di_name = dcanon(d->di_name, STRNULL);
320 } while ((d = d->di_prev) != dcwd);
327 * The path will be normalized if it
329 * 2) or starts with "../",
330 * 3) or ends with "/..",
331 * 4) or contains the string "/../",
332 * then it will be normalized, unless those strings are quoted.
333 * Otherwise, a copy is made and sent back.
336 dnormalize(const Char *cp, int expnd)
339 /* return true if dp is of the form "../xxx" or "/../xxx" */
340 #define IS_DOTDOT(sp, p) (ISDOTDOT(p) && ((p) == (sp) || *((p) - 1) == '/'))
341 #define IS_DOT(sp, p) (ISDOT(p) && ((p) == (sp) || *((p) - 1) == '/'))
345 struct Strbuf buf = Strbuf_INIT;
348 const Char *start = cp;
349 # ifdef HAVE_SLASHSLASH
351 # endif /* HAVE_SLASHSLASH */
354 * count the number of "../xxx" or "xxx/../xxx" in the path
356 for ( ; *cp && *(cp + 1); cp++)
357 if (IS_DOTDOT(start, cp))
361 * if none, we are done.
364 return (Strsave(start));
369 * We disable this test because:
370 * cd /tmp; mkdir dir1 dir2; cd dir2; ln -s /tmp/dir1; cd dir1;
371 * echo ../../dir1 does not expand. We had enabled this before
372 * because it was bothering people with expansions in compilation
373 * lines like -I../../foo. Maybe we need some kind of finer grain
376 * If the path doesn't exist, we are done too.
378 if (lstat(short2str(start), &sb) != 0 && errno == ENOENT)
379 return (Strsave(start));
382 cwd = xmalloc((Strlen(dcwd->di_name) + 3) * sizeof(Char));
383 (void) Strcpy(cwd, dcwd->di_name);
386 * If the path starts with a slash, we are not relative to
387 * the current working directory.
389 if (ABSOLUTEP(start))
391 # ifdef HAVE_SLASHSLASH
392 slashslash = cwd[0] == '/' && cwd[1] == '/';
393 # endif /* HAVE_SLASHSLASH */
396 * Ignore . and count ..'s
403 if (IS_DOT(start, cp)) {
407 else if (IS_DOTDOT(start, cp)) {
409 break; /* finish analyzing .././../xxx/[..] */
416 Strbuf_append1(&buf, *cp++);
418 Strbuf_terminate(&buf);
420 if ((dp = Strrchr(cwd, '/')) != NULL) {
421 # ifdef HAVE_SLASHSLASH
424 # endif /* HAVE_SLASHSLASH */
431 if (!*cwd) { /* too many ..'s, starts with "/" */
433 # ifdef HAVE_SLASHSLASH
435 * Only append another slash, if already the former cwd
436 * was in a double-slash path.
438 cwd[1] = slashslash ? '/' : '\0';
440 # else /* !HAVE_SLASHSLASH */
442 # endif /* HAVE_SLASHSLASH */
444 # ifdef HAVE_SLASHSLASH
445 else if (slashslash && cwd[1] == '\0') {
449 # endif /* HAVE_SLASHSLASH */
455 if (TRM(cwd[i - 1]) != '/') {
459 dp = Strspl(cwd, TRM(buf.s[0]) == '/' ? &buf.s[1] : buf.s);
463 if (TRM(cwd[i]) == '/')
466 /* Reduction of ".." following the stuff we collected in buf
467 * only makes sense if the directory item in buf really exists.
468 * Avoid reduction of "-I../.." (typical compiler call) to ""
469 * or "/usr/nonexistant/../bin" to "/usr/bin":
473 if (0 != stat(short2str(cwd), &exists)) {
476 return Strsave(start);
479 } while (*cp != '\0');
489 * dochngd - implement chdir command.
493 dochngd(Char **v, struct command *c)
496 struct directory *dp;
497 int dflag = skipargs(&v, "plvn", "[-|<dir>]");
501 cp = (dflag & DIR_OLD) ? varval(STRowd) : *v;
505 stderror(ERR_NAME | ERR_TOOFEW);
506 else if ((cp = varval(STRhome)) == STRNULL || *cp == 0)
507 stderror(ERR_NAME | ERR_NOHOMEDIR);
508 if (chdir(short2str(cp)) < 0)
509 stderror(ERR_NAME | ERR_CANTCHANGE);
512 else if ((dflag & DIR_OLD) == 0 && v[1] != NULL) {
513 stderror(ERR_NAME | ERR_TOOMANY);
517 else if ((dp = dfind(cp)) != 0) {
521 if (chdir(tmp = short2str(dp->di_name)) < 0)
522 stderror(ERR_SYSTEM, tmp, strerror(errno));
523 dcwd->di_prev->di_next = dcwd->di_next;
524 dcwd->di_next->di_prev = dcwd->di_prev;
530 if ((cp = dfollow(cp, dflag & DIR_OLD)) == NULL)
532 dp = xcalloc(sizeof(struct directory), 1);
535 dp->di_next = dcwd->di_next;
536 dp->di_prev = dcwd->di_prev;
537 dp->di_prev->di_next = dp;
538 dp->di_next->di_prev = dp;
553 cwdlen = Strlen(dcwd->di_name);
554 if (cwdlen == 1) /* root */
556 dp = xmalloc((cwdlen + Strlen(cp) + 2) * sizeof(Char));
557 for (p = dp, q = dcwd->di_name; (*p++ = *q++) != '\0';)
562 p--; /* don't add a / after root */
571 #if defined(WINNT_NATIVE)
573 #elif defined(__CYGWIN__)
574 if (ABSOLUTEP(cp) && cp[1] == ':') { /* Only DOS paths are treated that way */
577 cleanup_push(cp, xfree);
578 ret = dcanon(cp, dp);
582 #else /* !WINNT_NATIVE */
583 cleanup_push(cp, xfree);
584 ret = dcanon(cp, dp);
587 #endif /* WINNT_NATIVE */
592 * dfollow - change to arg directory; fall back on cdpath if not valid
595 dfollow(Char *cp, int old)
601 cp = old ? Strsave(cp) : globone(cp, G_ERROR);
602 cleanup_push(cp, xfree);
604 if (Strchr(cp, '`')) {
606 if (chdir(dptr = short2str(cp)) < 0)
607 stderror(ERR_SYSTEM, dptr, strerror(errno));
609 cleanup_push(dp, xfree);
615 stderror(ERR_SYSTEM, dptr, strerror(errno));
620 * if we are ignoring symlinks, try to fix relatives now.
621 * if we are expading symlinks, it should be done by now.
623 dp = dnormalize(cp, symlinks == SYM_IGNORE);
624 if (chdir(short2str(dp)) >= 0) {
630 if (chdir(short2str(cp)) >= 0) {
635 else if (errno != ENOENT && errno != ENOTDIR) {
639 stderror(ERR_SYSTEM, short2str(cp), strerror(err));
644 if (cp[0] != '/' && !prefix(STRdotsl, cp) && !prefix(STRdotdotsl, cp)
645 && (c = adrof(STRcdpath)) && c->vec != NULL) {
646 struct Strbuf buf = Strbuf_INIT;
649 for (cdp = c->vec; *cdp; cdp++) {
650 size_t len = Strlen(*cdp);
653 Strbuf_append(&buf, *cdp);
654 if ((*cdp)[len - 1] != '/')
655 Strbuf_append1(&buf, '/');
657 Strbuf_append(&buf, cp);
658 Strbuf_terminate(&buf);
660 * We always want to fix the directory here
661 * If we are normalizing symlinks
663 dp = dnormalize(buf.s, symlinks == SYM_IGNORE ||
664 symlinks == SYM_EXPAND);
665 if (chdir(short2str(dp)) >= 0) {
671 else if (chdir(short2str(cp)) >= 0) {
683 if ((dp[0] == '/' || dp[0] == '.') && chdir(short2str(dp)) >= 0) {
690 * on login source of ~/.cshdirs, errors are eaten. the dir stack is all
691 * directories we could get to.
694 stderror(ERR_SYSTEM, short2str(cp), strerror(serrno));
701 * dopushd - push new directory onto directory stack.
702 * with no arguments exchange top and second.
703 * with numeric argument (+n) bring it to top.
707 dopushd(Char **v, struct command *c)
709 struct directory *dp;
711 int dflag = skipargs(&v, "plvn", " [-|<dir>|+<n>]");
715 cp = (dflag & DIR_OLD) ? varval(STRowd) : *v;
718 if (adrof(STRpushdtohome)) {
719 if ((cp = varval(STRhome)) == STRNULL || *cp == 0)
720 stderror(ERR_NAME | ERR_NOHOMEDIR);
721 if (chdir(short2str(cp)) < 0)
722 stderror(ERR_NAME | ERR_CANTCHANGE);
723 if ((cp = dfollow(cp, dflag & DIR_OLD)) == NULL)
725 dp = xcalloc(sizeof(struct directory), 1);
729 dp->di_next = dcwd->di_next;
731 dp->di_next->di_prev = dp;
736 if ((dp = dcwd->di_prev) == &dhead)
739 stderror(ERR_NAME | ERR_NODIR);
740 if (chdir(tmp = short2str(dp->di_name)) < 0)
741 stderror(ERR_SYSTEM, tmp, strerror(errno));
742 dp->di_prev->di_next = dp->di_next;
743 dp->di_next->di_prev = dp->di_prev;
744 dp->di_next = dcwd->di_next;
746 dcwd->di_next->di_prev = dp;
750 else if ((dflag & DIR_OLD) == 0 && v[1] != NULL) {
751 stderror(ERR_NAME | ERR_TOOMANY);
755 else if ((dp = dfind(cp)) != NULL) {
758 if (chdir(tmp = short2str(dp->di_name)) < 0)
759 stderror(ERR_SYSTEM, tmp, strerror(errno));
761 * kfk - 10 Feb 1984 - added new "extraction style" pushd +n
763 if (adrof(STRdextract))
769 if ((ccp = dfollow(cp, dflag & DIR_OLD)) == NULL)
771 dp = xcalloc(sizeof(struct directory), 1);
775 dp->di_next = dcwd->di_next;
777 dp->di_next->di_prev = dp;
783 * dfind - find a directory if specified by numeric (+n) argument
785 static struct directory *
788 struct directory *dp;
794 for (ep = cp; Isdigit(*ep); ep++)
801 for (dp = dcwd; i != 0; i--) {
802 if ((dp = dp->di_prev) == &dhead)
805 stderror(ERR_NAME | ERR_DEEP);
811 * dopopd - pop a directory out of the directory stack
812 * with a numeric argument just discard it.
816 dopopd(Char **v, struct command *c)
819 struct directory *dp, *p = NULL;
820 int dflag = skipargs(&v, "plvn", " [-|+<n>]");
824 cp = (dflag & DIR_OLD) ? varval(STRowd) : *v;
828 else if ((dflag & DIR_OLD) == 0 && v[1] != NULL) {
829 stderror(ERR_NAME | ERR_TOOMANY);
833 else if ((dp = dfind(cp)) == 0)
834 stderror(ERR_NAME | ERR_BADDIR);
835 if (dp->di_prev == &dhead && dp->di_next == &dhead)
836 stderror(ERR_NAME | ERR_EMPTY);
840 if ((p = dp->di_prev) == &dhead)
842 if (chdir(tmp = short2str(p->di_name)) < 0)
843 stderror(ERR_SYSTEM, tmp, strerror(errno));
845 dp->di_prev->di_next = dp->di_next;
846 dp->di_next->di_prev = dp->di_prev;
857 * dfree - free the directory (or keep it if it still has ref count)
860 dfree(struct directory *dp)
863 if (dp->di_count != 0) {
864 dp->di_next = dp->di_prev = 0;
873 * dcanon - canonicalize the pathname, removing excess ./ and ../ etc.
874 * we are of course assuming that the file system is standardly
875 * constructed (always have ..'s, directories have links)
878 dcanon(Char *cp, Char *p)
881 Char *p1, *p2; /* general purpose */
883 #ifdef HAVE_SLASHSLASH
885 #endif /* HAVE_SLASHSLASH */
888 #ifdef S_IFLNK /* if we have symlinks */
897 * christos: if the path given does not start with a slash prepend cwd. If
898 * cwd does not start with a slash or the result would be too long try to
901 if (!ABSOLUTEP(cp)) {
906 if (p1 == STRNULL || !ABSOLUTEP(p1)) {
907 Char *new_cwd = agetcwd();
909 if (new_cwd == NULL) {
910 xprintf("%s: %s\n", progname, strerror(errno));
911 setcopy(STRcwd, str2short("/"), VAR_READWRITE|VAR_NOGLOB);
914 setv(STRcwd, new_cwd, VAR_READWRITE|VAR_NOGLOB);
918 tmpdir = xmalloc((len + clen + 2) * sizeof (*tmpdir));
919 (void) Strcpy(tmpdir, p1);
920 (void) Strcat(tmpdir, STRslash);
921 (void) Strcat(tmpdir, cp);
926 #ifdef HAVE_SLASHSLASH
927 slashslash = (cp[0] == '/' && cp[1] == '/');
928 #endif /* HAVE_SLASHSLASH */
930 while (*p) { /* for each component */
931 sp = p; /* save slash address */
932 while (*++p == '/') /* flush extra slashes */
935 for (p1 = sp, p2 = p; (*p1++ = *p2++) != '\0';)
937 p = sp; /* save start of component */
940 while (*++p) /* find next slash or end of path */
947 #ifdef HAVE_SLASHSLASH
948 if (&cp[1] == sp && sp[0] == '.' && sp[1] == '.' && sp[2] == '\0')
950 #endif /* HAVE_SLASHSLASH */
951 if (*sp == '\0') { /* if component is null */
952 if (--sp == cp) /* if path is one char (i.e. /) */
957 else if (sp[0] == '.' && sp[1] == 0) {
959 for (p1 = sp, p2 = p + 1; (*p1++ = *p2++) != '\0';)
968 else if (sp[0] == '.' && sp[1] == '.' && sp[2] == 0) {
970 * We have something like "yyy/xxx/..", where "yyy" can be null or
971 * a path starting at /, and "xxx" is a single component. Before
972 * compressing "xxx/..", we want to expand "yyy/xxx", if it is a
975 *--sp = 0; /* form the pathname for readlink */
976 #ifdef S_IFLNK /* if we have symlinks */
977 if (sp != cp && /* symlinks != SYM_IGNORE && */
978 (tlink = areadlink(short2str(cp))) != NULL) {
979 mlink = str2short(tlink);
985 * Point p to the '/' in "/..", and restore the '/'.
990 * Relative path, expand it between the "yyy/" and the
991 * "/..". First, back sp up to the character past "yyy/".
998 * New length is "yyy/" + mlink + "/.." and rest
1000 p1 = newcp = xmalloc(((sp - cp) + Strlen(mlink) +
1001 Strlen(p) + 1) * sizeof(Char));
1003 * Copy new path into newcp
1005 for (p2 = cp; (*p1++ = *p2++) != '\0';)
1007 for (p1--, p2 = mlink; (*p1++ = *p2++) != '\0';)
1009 for (p1--, p2 = p; (*p1++ = *p2++) != '\0';)
1012 * Restart canonicalization at expanded "/xxx".
1014 p = sp - cp - 1 + newcp;
1017 newcp = Strspl(mlink, p);
1019 * Restart canonicalization at beginning
1025 #ifdef HAVE_SLASHSLASH
1026 slashslash = (cp[0] == '/' && cp[1] == '/');
1027 #endif /* HAVE_SLASHSLASH */
1028 continue; /* canonicalize the link */
1030 #endif /* S_IFLNK */
1033 while (*--sp != '/')
1036 for (p1 = sp + 1, p2 = p + 1; (*p1++ = *p2++) != '\0';)
1045 else { /* normal dir name (not . or .. or nothing) */
1047 #ifdef S_IFLNK /* if we have symlinks */
1048 if (sp != cp && symlinks == SYM_CHASE &&
1049 (tlink = areadlink(short2str(cp))) != NULL) {
1050 mlink = str2short(tlink);
1060 * point sp to p (rather than backing up).
1064 if (*mlink != '/') {
1066 * Relative path, expand it between the "yyy/" and the
1067 * remainder. First, back sp up to the character past
1070 while (*--sp != '/')
1075 * New length is "yyy/" + mlink + "/.." and rest
1077 p1 = newcp = xmalloc(((sp - cp) + Strlen(mlink) +
1078 Strlen(p) + 1) * sizeof(Char));
1080 * Copy new path into newcp
1082 for (p2 = cp; (*p1++ = *p2++) != '\0';)
1084 for (p1--, p2 = mlink; (*p1++ = *p2++) != '\0';)
1086 for (p1--, p2 = p; (*p1++ = *p2++) != '\0';)
1089 * Restart canonicalization at expanded "/xxx".
1091 p = sp - cp - 1 + newcp;
1094 newcp = Strspl(mlink, p);
1096 * Restart canonicalization at beginning
1102 #ifdef HAVE_SLASHSLASH
1103 slashslash = (cp[0] == '/' && cp[1] == '/');
1104 #endif /* HAVE_SLASHSLASH */
1105 continue; /* canonicalize the mlink */
1107 #endif /* S_IFLNK */
1117 p1 = varval(STRhome);
1120 * See if we're not in a subdir of STRhome
1122 if (p1 && *p1 == '/' && (Strncmp(p1, cp, cc) != 0 ||
1123 (cp[cc] != '/' && cp[cc] != '\0'))) {
1124 static ino_t home_ino = (ino_t) -1;
1125 static dev_t home_dev = (dev_t) -1;
1126 static Char *home_ptr = NULL;
1127 struct stat statbuf;
1132 * Get dev and ino of STRhome
1134 if (home_ptr != p1 &&
1135 stat(short2str(p1), &statbuf) != -1) {
1136 home_dev = statbuf.st_dev;
1137 home_ino = statbuf.st_ino;
1141 * Start comparing dev & ino backwards
1143 p2 = copy = Strsave(cp);
1145 while (*p2 && stat(short2str(p2), &statbuf) != -1) {
1146 if (DEV_DEV_COMPARE(statbuf.st_dev, home_dev) &&
1147 statbuf.st_ino == home_ino) {
1151 if ((sp = Strrchr(p2, '/')) != NULL)
1155 * See if we found it
1159 * Use STRhome to make '~' work
1161 newcp = Strspl(p1, cp + Strlen(p2));
1167 #endif /* S_IFLNK */
1169 #ifdef HAVE_SLASHSLASH
1172 p = xmalloc((Strlen(cp) + 2) * sizeof(Char));
1174 (void) Strcpy(&p[1], cp);
1179 if (cp[1] == '/' && cp[2] == '/') {
1180 for (p1 = &cp[1], p2 = &cp[2]; (*p1++ = *p2++) != '\0';)
1183 #endif /* HAVE_SLASHSLASH */
1189 * dnewcwd - make a new directory in the loop the current one
1192 dnewcwd(struct directory *dp, int dflag)
1196 if (adrof(STRdunique)) {
1197 struct directory *dn;
1199 for (dn = dhead.di_prev; dn != &dhead; dn = dn->di_prev)
1200 if (dn != dp && Strcmp(dn->di_name, dp->di_name) == 0) {
1201 dn->di_next->di_prev = dn->di_prev;
1202 dn->di_prev->di_next = dn->di_next;
1208 dset(dcwd->di_name);
1210 print = printd; /* if printd is set, print dirstack... */
1211 if (adrof(STRpushdsilent)) /* but pushdsilent overrides printd... */
1213 if (dflag & DIR_PRINT) /* but DIR_PRINT overrides pushdsilent... */
1215 if (bequiet) /* and bequiet overrides everything */
1219 cwd_cmd(); /* PWP: run the defined cwd command */
1227 struct directory *dn, *dp;
1229 if ((vp = adrof(STRdirstack)) == NULL || vp->vec == NULL)
1232 /* Free the whole stack */
1233 while ((dn = dhead.di_prev) != &dhead) {
1234 dn->di_next->di_prev = dn->di_prev;
1235 dn->di_prev->di_next = dn->di_next;
1240 /* thread the current working directory */
1241 dhead.di_prev = dhead.di_next = dcwd;
1242 dcwd->di_next = dcwd->di_prev = &dhead;
1244 /* put back the stack */
1245 for (cp = vp->vec; cp && *cp && **cp; cp++) {
1246 dp = xcalloc(sizeof(struct directory), 1);
1247 dp->di_name = Strsave(*cp);
1250 dp->di_next = dcwd->di_next;
1252 dp->di_next->di_prev = dp;
1254 dgetstack(); /* Make $dirstack reflect the current state */
1262 struct directory *dn;
1264 if (adrof(STRdirstack) == NULL)
1267 for (dn = dhead.di_prev; dn != &dhead; dn = dn->di_prev, i++)
1269 dbp = dblk = xmalloc((i + 1) * sizeof(Char *));
1270 for (dn = dhead.di_prev; dn != &dhead; dn = dn->di_prev, dbp++)
1271 *dbp = Strsave(dn->di_name);
1273 cleanup_push(dblk, blk_cleanup);
1274 setq(STRdirstack, dblk, &shvhed, VAR_READWRITE);
1275 cleanup_ignore(dblk);
1276 cleanup_until(dblk);
1280 * getstakd - added by kfk 17 Jan 1984
1281 * Support routine for the stack hack. Finds nth directory in
1282 * the directory stack, or finds last directory in stack.
1287 struct directory *dp;
1290 if (cnt < 0) { /* < 0 ==> last dir requested. */
1308 * Karl Kleinpaste - 10 Feb 1984
1309 * Added dextract(), which is used in pushd +n.
1310 * Instead of just rotating the entire stack around, dextract()
1311 * lets the user have the nth dir extracted from its current
1312 * position, and pushes it onto the top.
1315 dextract(struct directory *dp)
1319 dp->di_next->di_prev = dp->di_prev;
1320 dp->di_prev->di_next = dp->di_next;
1321 dp->di_next = dcwd->di_next;
1323 dp->di_next->di_prev = dp;
1328 bequiet_cleanup(void *dummy)
1335 loaddirs(Char *fname)
1337 static Char *loaddirs_cmd[] = { STRsource, NULL, NULL };
1340 cleanup_push(&bequiet, bequiet_cleanup);
1342 loaddirs_cmd[1] = fname;
1343 else if ((fname = varval(STRdirsfile)) != STRNULL)
1344 loaddirs_cmd[1] = fname;
1346 loaddirs_cmd[1] = STRtildotdirs;
1347 dosource(loaddirs_cmd, NULL);
1348 cleanup_until(&bequiet);
1352 * create a file called ~/.cshdirs which has a sequence
1353 * of pushd commands which will restore the dir stack to
1354 * its state before exit/logout. remember that the order
1355 * is reversed in the file because we are pushing.
1359 recdirs(Char *fname, int def)
1361 int fp, ftmp, oldidfds;
1363 struct directory *dp;
1366 struct Strbuf qname = Strbuf_INIT;
1368 if (fname == NULL && !def)
1371 if (fname == NULL) {
1372 if ((fname = varval(STRdirsfile)) == STRNULL)
1373 fname = Strspl(varval(STRhome), &STRtildotdirs[1]);
1375 fname = Strsave(fname);
1378 fname = globone(fname, G_ERROR);
1379 cleanup_push(fname, xfree);
1381 if ((fp = xcreat(short2str(fname), 0600)) == -1) {
1382 cleanup_until(fname);
1386 if ((snum = varval(STRsavedirs)) == STRNULL || snum[0] == '\0')
1387 num = (unsigned int) ~0;
1389 num = (unsigned int) atoi(short2str(snum));
1396 cleanup_push(&qname, Strbuf_cleanup);
1404 xprintf("cd %S\n", quote_meta(&qname, dp->di_name));
1407 xprintf("pushd %S\n", quote_meta(&qname, dp->di_name));
1412 } while ((dp = dp->di_next) != dcwd->di_next);
1417 cleanup_until(fname);