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-rw-r--r--usr.bin/lndir/Makefile5
-rw-r--r--usr.bin/lndir/lndir.1139
-rw-r--r--usr.bin/lndir/lndir.c342
3 files changed, 486 insertions, 0 deletions
diff --git a/usr.bin/lndir/Makefile b/usr.bin/lndir/Makefile
new file mode 100644
index 00000000000..acd7907dedb
--- /dev/null
+++ b/usr.bin/lndir/Makefile
@@ -0,0 +1,5 @@
+# $OpenBSD: Makefile,v 1.1 1996/08/19 05:47:25 downsj Exp $
+
+PROG= lndir
+
+.include <bsd.prog.mk>
diff --git a/usr.bin/lndir/lndir.1 b/usr.bin/lndir/lndir.1
new file mode 100644
index 00000000000..69be6d9b329
--- /dev/null
+++ b/usr.bin/lndir/lndir.1
@@ -0,0 +1,139 @@
+.\" $OpenBSD: lndir.1,v 1.1 1996/08/19 05:47:26 downsj Exp $
+.\" $XConsortium: lndir.man /main/9 1995/12/15 14:00:35 gildea $
+.\"
+.\" Copyright (c) 1993, 1994 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.
+.\"
+.TH LNDIR 1 "" "OpenBSD"
+.SH NAME
+lndir \- create a shadow directory of symbolic links to another directory tree
+.SH SYNOPSIS
+.B lndir
+[
+.B \-e
+.I exceptfile
+]
+[
+.B \-s
+] [
+.B \-i
+]
+.I \|fromdir\|
+[
+.I todir
+]
+.SH DESCRIPTION
+The
+.I lndir
+program makes a shadow copy
+.I todir
+of a directory tree
+.I fromdir,
+except that the shadow is not
+populated with real files but instead with symbolic links pointing at
+the real files in the
+.I fromdir
+directory tree. This is usually useful for maintaining source code for
+different machine architectures. You create a shadow directory
+containing links to the real source, which you will have usually
+mounted from a remote machine. You can build in the shadow tree, and
+the object files will be in the shadow directory, while the
+source files in the shadow directory are just symlinks to the real
+files.
+.PP
+This scheme has the advantage that if you update the source, you need not
+propagate the change to the other architectures by hand, since all
+source in all shadow directories are symlinks to the real thing: just cd
+to the shadow directory and recompile away.
+.PP
+The
+.I todir
+argument is optional and defaults to the current directory. The
+.I fromdir
+argument may be relative (e.g., ../src) and is relative to
+.I todir
+(not the current directory).
+.PP
+.\" CVS.adm is used by the Concurrent Versions System.
+Note that RCS, SCCS, CVS and CVS.adm directories are not shadowed, in
+addition to any specified on the command line with \fB\-e\fP arguments.
+.PP
+If you add files, simply run
+.I lndir
+again. New files will be silently added. Old files will be
+checked that they have the correct link.
+.PP
+Deleting files is a more painful problem; the symlinks will
+just point into never never land.
+.PP
+If a file in \fIfromdir\fP is a symbolic link, \fIlndir\fP will make
+the same link in \fItodir\fP rather than making a link back to the
+(symbolic link) entry in \fIfromdir.\fP The \fB\-i\fP flag
+changes this behavior.
+.SH OPTIONS
+.IP \-e
+Add the specified file to the list of excluded files/directories. This is
+effective in all directories searched by \fIlndir\fP. This option may be
+specified as many times as needed.
+.IP \-s
+Normally \fIlndir\fP outputs the name of each subdirectory as it
+descends into it. The \fB\-s\fP option suppresses these status
+messages.
+.IP \-i
+Causes the program to not treat symbolic links in \fIfromdir\fP
+specially. The link created in \fItodir\fP will point back to the
+corresponding (symbolic link) file in \fIfromdir\fP.
+If the link is to a directory, this is almost certainly the wrong thing.
+.IP
+This option exists mostly to emulate the behavior the C version of
+\fIlndir\fP had in X11R6. Its use is not recommended.
+.SH DIAGNOSTICS
+The program displays the name of each subdirectory it enters, followed
+by a colon. The \fB\-s\fP option suppresses these messages.
+.PP
+A warning message is displayed if the symbolic link cannot be created.
+The usual problem is that a regular file of the same name already
+exists.
+.PP
+If the link already exists but doesn't point to the correct file, the
+program prints the link name and the location where it does point.
+.SH BUGS
+The
+.I patch
+program gets upset if it cannot change the files. You should never run
+.I patch
+from a shadow directory anyway.
+.PP
+You need to use something like
+.nf
+ find todir \|\-type l \|\-print \||\| xargs rm
+.fi
+to clear out all files before you can relink (if fromdir moved, for instance).
+Something like
+.nf
+ find . \|\\! \|\-type d \|\-print
+.fi
+will find all files that are not directories.
diff --git a/usr.bin/lndir/lndir.c b/usr.bin/lndir/lndir.c
new file mode 100644
index 00000000000..cd54f378256
--- /dev/null
+++ b/usr.bin/lndir/lndir.c
@@ -0,0 +1,342 @@
+/* $OpenBSD: lndir.c,v 1.1 1996/08/19 05:47:26 downsj Exp $ */
+/* $XConsortium: lndir.c /main/15 1995/08/30 10:56:18 gildea $ */
+/* 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 <stdio.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/param.h>
+#include <errno.h>
+#include <dirent.h>
+#include <stdarg.h>
+#include <string.h>
+
+int silent = 0; /* -silent */
+int ignore_links = 0; /* -ignorelinks */
+
+char *rcurdir;
+char *curdir;
+
+struct except {
+ char *name;
+
+ struct except *next;
+};
+struct except *exceptions = (struct except *)NULL;
+
+void
+quit (int code, char * fmt, ...)
+{
+ va_list args;
+ va_start(args, fmt);
+ vfprintf (stderr, fmt, args);
+ va_end(args);
+ putc ('\n', stderr);
+ exit (code);
+}
+
+void
+quiterr (code, s)
+ char *s;
+{
+ perror (s);
+ exit (code);
+}
+
+void
+msg (char * fmt, ...)
+{
+ va_list args;
+ if (curdir) {
+ fprintf (stderr, "%s:\n", curdir);
+ curdir = 0;
+ }
+ va_start(args, fmt);
+ vfprintf (stderr, fmt, args);
+ va_end(args);
+ 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);
+}
+
+
+addexcept(name)
+ char *name;
+{
+ struct except *new;
+
+ new = (struct except *)malloc(sizeof(struct except));
+ if (new == (struct except *)NULL)
+ quiterr(1, "addexcept");
+ new->name = strdup(name);
+ if (new->name == (char *)NULL)
+ quiterr(1, "addexcept");
+
+ new->next = exceptions;
+ exceptions = new;
+}
+
+
+/* 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;
+ struct except *cur;
+
+ 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;
+ strcpy (p, dp->d_name);
+
+ if (n_dirs > 0) {
+ if (stat (buf, &sb) < 0) {
+ mperror (buf);
+ continue;
+ }
+
+ if(S_ISDIR(sb.st_mode)) {
+ /* directory */
+ n_dirs--;
+ if (dp->d_name[0] == '.' &&
+ (dp->d_name[1] == '\0' || (dp->d_name[1] == '.' &&
+ dp->d_name[2] == '\0')))
+ continue;
+ for (cur = exceptions; cur != (struct except *)NULL;
+ cur = cur->next) {
+ if (!strcmp (dp->d_name, cur->name))
+ goto next; /* can't 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, "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) {
+ /* Link exists in new tree. Print message if it doesn't match. */
+ if (!equivalent (basesymlen>=0 ? basesym : buf, symbuf))
+ msg ("%s: %s", dp->d_name, symbuf);
+ } else {
+ if (symlink (basesymlen>=0 ? basesym : buf, dp->d_name) < 0)
+ mperror (dp->d_name);
+ }
+next:
+ }
+
+ closedir (df);
+ return 0;
+}
+
+
+main (ac, av)
+int ac;
+char **av;
+{
+ char *prog_name = av[0];
+ char *fn, *tn;
+ struct stat fs, ts;
+
+ while (++av, --ac) {
+ if ((strcmp(*av, "-silent") == 0) || (strcmp(*av, "-s") == 0))
+ silent = 1;
+ else if ((strcmp(*av, "-ignorelinks") == 0) || (strcmp(*av, "-i") == 0))
+ ignore_links = 1;
+ else if (strcmp(*av, "-e") == 0) {
+ ++av, --ac;
+
+ if (ac < 2)
+ quit (1, "usage: %s [-e except] [-s] [-i] fromdir [todir]",
+ prog_name);
+ addexcept(*av);
+ }
+ else if (strcmp(*av, "--") == 0) {
+ ++av, --ac;
+ break;
+ }
+ else
+ break;
+ }
+
+ if (ac < 1 || ac > 2)
+ quit (1, "usage: %s [-e except] [-s] [-i] fromdir [todir]",
+ prog_name);
+
+ fn = av[0];
+ if (ac == 2)
+ tn = av[1];
+ else
+ tn = ".";
+
+ /* to directory */
+ if (stat (tn, &ts) < 0)
+ 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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