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-rw-r--r--utils/lndir/lndir.c399
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diff --git a/utils/lndir/lndir.c b/utils/lndir/lndir.c
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+/* $XConsortium: lndir.c /main/16 1996/09/28 16:16:40 rws $ */
+/* Create shadow link tree (after X11R4 script of the same name)
+ Mark Reinhold (mbr@lcs.mit.edu)/3 January 1990 */
+
+/*
+Copyright (c) 1990, X Consortium
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+Except as contained in this notice, the name of the X Consortium shall not be
+used in advertising or otherwise to promote the sale, use or other dealings
+in this Software without prior written authorization from the X Consortium.
+
+*/
+
+/* From the original /bin/sh script:
+
+ Used to create a copy of the a directory tree that has links for all
+ non-directories (except those named RCS, SCCS or CVS.adm). If you are
+ building the distribution on more than one machine, you should use
+ this technique.
+
+ If your master sources are located in /usr/local/src/X and you would like
+ your link tree to be in /usr/local/src/new-X, do the following:
+
+ % mkdir /usr/local/src/new-X
+ % cd /usr/local/src/new-X
+ % lndir ../X
+*/
+
+#include "lndir-Xos.h"
+#include <stdlib.h>
+#include <stdio.h>
+#include <sys/stat.h>
+#include <sys/param.h>
+#include <errno.h>
+
+#ifndef X_NOT_POSIX
+#include <dirent.h>
+#else
+#ifdef SYSV
+#include <dirent.h>
+#else
+#ifdef USG
+#include <dirent.h>
+#else
+#include <sys/dir.h>
+#ifndef dirent
+#define dirent direct
+#endif
+#endif
+#endif
+#endif
+#ifndef MAXPATHLEN
+#define MAXPATHLEN 2048
+#endif
+
+#ifdef __CYGWIN32__
+#include <sys/cygwin.h>
+#endif
+
+#if NeedVarargsPrototypes
+#include <stdarg.h>
+#endif
+
+#ifdef X_NOT_STDC_ENV
+extern int errno;
+#endif
+int silent = 0; /* -silent */
+int ignore_links = 0; /* -ignorelinks */
+
+char *rcurdir;
+char *curdir;
+
+int force=0;
+
+void
+quit (
+#if NeedVarargsPrototypes
+ int code, char * fmt, ...)
+#else
+ code, fmt, a1, a2, a3)
+ char *fmt;
+#endif
+{
+#if NeedVarargsPrototypes
+ va_list args;
+ va_start(args, fmt);
+ vfprintf (stderr, fmt, args);
+ va_end(args);
+#else
+ fprintf (stderr, fmt, a1, a2, a3);
+#endif
+ putc ('\n', stderr);
+ exit (code);
+}
+
+void
+quiterr (code, s)
+ char *s;
+{
+ perror (s);
+ exit (code);
+}
+
+void
+msg (
+#if NeedVarargsPrototypes
+ char * fmt, ...)
+#else
+ fmt, a1, a2, a3)
+ char *fmt;
+#endif
+{
+#if NeedVarargsPrototypes
+ va_list args;
+#endif
+ if (curdir) {
+ fprintf (stderr, "%s:\n", curdir);
+ curdir = 0;
+ }
+#if NeedVarargsPrototypes
+ va_start(args, fmt);
+ vfprintf (stderr, fmt, args);
+ va_end(args);
+#else
+ fprintf (stderr, fmt, a1, a2, a3);
+#endif
+ putc ('\n', stderr);
+}
+
+void
+mperror (s)
+ char *s;
+{
+ if (curdir) {
+ fprintf (stderr, "%s:\n", curdir);
+ curdir = 0;
+ }
+ perror (s);
+}
+
+
+int equivalent(lname, rname)
+ char *lname;
+ char *rname;
+{
+ char *s;
+
+ if (!strcmp(lname, rname))
+ return 1;
+ for (s = lname; *s && (s = strchr(s, '/')); s++) {
+ while (s[1] == '/')
+ strcpy(s+1, s+2);
+ }
+ return !strcmp(lname, rname);
+}
+
+
+/* Recursively create symbolic links from the current directory to the "from"
+ directory. Assumes that files described by fs and ts are directories. */
+
+dodir (fn, fs, ts, rel)
+char *fn; /* name of "from" directory, either absolute or
+ relative to cwd */
+struct stat *fs, *ts; /* stats for the "from" directory and cwd */
+int rel; /* if true, prepend "../" to fn before using */
+{
+ DIR *df;
+ struct dirent *dp;
+ char buf[MAXPATHLEN + 1], *p;
+ char symbuf[MAXPATHLEN + 1];
+ char basesym[MAXPATHLEN + 1];
+ struct stat sb, sc;
+ int n_dirs;
+ int symlen;
+ int basesymlen = -1;
+ char *ocurdir;
+
+ if ((fs->st_dev == ts->st_dev) && (fs->st_ino == ts->st_ino)) {
+ msg ("%s: From and to directories are identical!", fn);
+ return 1;
+ }
+
+ if (rel)
+ strcpy (buf, "../");
+ else
+ buf[0] = '\0';
+ strcat (buf, fn);
+
+ if (!(df = opendir (buf))) {
+ msg ("%s: Cannot opendir", buf);
+ return 1;
+ }
+
+ p = buf + strlen (buf);
+ *p++ = '/';
+ n_dirs = fs->st_nlink;
+ while (dp = readdir (df)) {
+ if (dp->d_name[strlen(dp->d_name) - 1] == '~')
+ continue;
+ if (dp->d_name[0] == '.' && dp->d_name[1] == '#') /* 'non-conflict files' left behind by CVS */
+ continue;
+ strcpy (p, dp->d_name);
+
+ if (n_dirs > 0) {
+ if (stat (buf, &sb) < 0) {
+ mperror (buf);
+ continue;
+ }
+
+#ifdef S_ISDIR
+ if(S_ISDIR(sb.st_mode))
+#else
+ if (sb.st_mode & S_IFDIR)
+#endif
+ {
+ /* directory */
+#ifndef __CYGWIN32__ /* don't trust cygwin's n_dirs count */
+ n_dirs--;
+#endif
+ if (dp->d_name[0] == '.' &&
+ (dp->d_name[1] == '\0' || (dp->d_name[1] == '.' &&
+ dp->d_name[2] == '\0')))
+ continue;
+ if (!strcmp (dp->d_name, "RCS"))
+ continue;
+ if (!strcmp (dp->d_name, "SCCS"))
+ continue;
+ if (!strcmp (dp->d_name, "CVS"))
+ continue;
+ if (!strcmp (dp->d_name, ".svn"))
+ continue;
+ if (!strcmp (dp->d_name, "_darcs"))
+ continue;
+ if (!strcmp (dp->d_name, "CVS.adm"))
+ continue;
+ ocurdir = rcurdir;
+ rcurdir = buf;
+ curdir = silent ? buf : (char *)0;
+ if (!silent)
+ printf ("%s:\n", buf);
+ if ((stat (dp->d_name, &sc) < 0) && (errno == ENOENT)) {
+ if (mkdir (dp->d_name, 0777) < 0 ||
+ stat (dp->d_name, &sc) < 0) {
+ mperror (dp->d_name);
+ curdir = rcurdir = ocurdir;
+ continue;
+ }
+ }
+ if (readlink (dp->d_name, symbuf, sizeof(symbuf) - 1) >= 0) {
+ msg ("%s: is a link instead of a directory", dp->d_name);
+ curdir = rcurdir = ocurdir;
+ continue;
+ }
+ if (chdir (dp->d_name) < 0) {
+ mperror (dp->d_name);
+ curdir = rcurdir = ocurdir;
+ continue;
+ }
+ dodir (buf, &sb, &sc, (buf[0] != '/'));
+ if (chdir ("..") < 0)
+ quiterr (1, "..");
+ curdir = rcurdir = ocurdir;
+ continue;
+ }
+ }
+
+ /* non-directory */
+ symlen = readlink (dp->d_name, symbuf, sizeof(symbuf) - 1);
+ if (symlen >= 0)
+ symbuf[symlen] = '\0';
+
+ /* The option to ignore links exists mostly because
+ checking for them slows us down by 10-20%.
+ But it is off by default because this really is a useful check. */
+ if (!ignore_links) {
+ /* see if the file in the base tree was a symlink */
+ basesymlen = readlink(buf, basesym, sizeof(basesym) - 1);
+ if (basesymlen >= 0)
+ basesym[basesymlen] = '\0';
+ }
+
+ if (symlen >= 0) {
+ if (!equivalent (basesymlen>=0 ? basesym : buf, symbuf)) {
+ if (force) {
+ unlink(dp->d_name);
+ if (symlink (basesymlen>=0 ? basesym : buf, dp->d_name) < 0)
+ mperror (dp->d_name);
+ } else {
+ /* Link exists in new tree. Print message if it doesn't match. */
+ msg ("%s: %s", dp->d_name, symbuf);
+ }
+ }
+ } else {
+ if (symlink (basesymlen>=0 ? basesym : buf, dp->d_name) < 0)
+ mperror (dp->d_name);
+ }
+ }
+
+ closedir (df);
+ return 0;
+}
+
+
+main (ac, av)
+int ac;
+char **av;
+{
+ char *prog_name = av[0];
+ char* tn;
+ struct stat fs, ts;
+#ifdef __CYGWIN32__
+ /*
+ The lndir code assumes unix-style paths to work. cygwin
+ lets you get away with using dos'ish paths (e.g., "f:/oo")
+ in most contexts. Using them with 'lndir' will seriously
+ confuse the user though, so under-the-hood, we convert the
+ path into something POSIX-like.
+ */
+ static char fn[MAXPATHLEN+1];
+#else
+ char *fn;
+#endif
+
+ while (++av, --ac) {
+ if (strcmp(*av, "-silent") == 0)
+ silent = 1;
+ else if (strcmp(*av, "-f") == 0)
+ force = 1;
+ else if (strcmp(*av, "-ignorelinks") == 0)
+ ignore_links = 1;
+ else if (strcmp(*av, "--") == 0) {
+ ++av, --ac;
+ break;
+ } else
+ break;
+ }
+
+ if (ac < 1 || ac > 2)
+ quit (1, "usage: %s [-f] [-silent] [-ignorelinks] fromdir [todir]",
+ prog_name);
+
+#ifdef __CYGWIN32__
+ cygwin_conv_to_full_posix_path(av[0], fn);
+#else
+ fn = av[0];
+#endif
+
+ if (ac == 2)
+ tn = av[1];
+ else
+ tn = ".";
+
+ /* to directory */
+ if (stat (tn, &ts) < 0) {
+ if (force && (tn[0] != '.' || tn[1] != '\0') ) {
+ mkdir(tn, S_IRWXU | S_IRWXG | S_IROTH | S_IXOTH );
+ }
+ else {
+ quiterr (1, tn);
+#ifdef S_ISDIR
+ if (!(S_ISDIR(ts.st_mode)))
+#else
+ if (!(ts.st_mode & S_IFDIR))
+#endif
+ quit (2, "%s: Not a directory", tn);
+ }
+ }
+ if (chdir (tn) < 0)
+ quiterr (1, tn);
+
+ /* from directory */
+ if (stat (fn, &fs) < 0)
+ quiterr (1, fn);
+#ifdef S_ISDIR
+ if (!(S_ISDIR(fs.st_mode)))
+#else
+ if (!(fs.st_mode & S_IFDIR))
+#endif
+ quit (2, "%s: Not a directory", fn);
+
+ exit (dodir (fn, &fs, &ts, 0));
+}
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