X-Git-Url: https://mattmccutchen.net/rsync/rsync.git/blobdiff_plain/f22ee865172a42b7c4b291472b6fddb484c8db66..ac1d2d338450eb005abf03002f5784097caf7e19:/tls.c

diff --git a/tls.c b/tls.c
index a4fda6b8..78feae3a 100644
--- a/tls.c
+++ b/tls.c
@@ -1,45 +1,41 @@
 /* -*- c-file-style: "linux" -*-
  *
- * Copyright (C) 2001 by Martin Pool
- * 
+ * Copyright (C) 2001, 2002 by Martin Pool <mbp@samba.org>
+ *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License version
  * 2 as published by the Free Software Foundation.
- * 
+ *
  * This program is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU General Public License for more details.
- * 
+ *
  * You should have received a copy of the GNU General Public License
  * along with this program; if not, write to the Free Software
  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  */
 
 /**
- * \section tls
+ * @file tls.c
  *
- * tls -- Trivial recursive ls, for comparing two directories after
- * running an rsync.
+ * Trivial @c ls for comparing two directories after running an rsync.
  *
  * The problem with using the system's own ls is that some features
  * have little quirks that make directories look different when for
  * our purposes they're the same -- for example, the BSD braindamage
  * about setting the mode on symlinks based on your current umask.
  *
- * There are some restrictions compared to regular ls: all the names
- * on the command line must be directories rather than files; you
- * can't give wildcards either.
+ * All the filenames must be given on the command line -- tls does not
+ * even read directories, let alone recurse.  The typical usage is
+ * "find|sort|xargs tls".
  *
- * At the moment we don't sort the output, but all the files have full
- * names, so you can run it through sort(1).
+ * The format is not exactly the same as any particular Unix ls(1).
  *
- * We need to recurse downwards and show all the interesting
- * information and no more.
- *
- * \todo Use readdir64 if available?
- */
-
+ * A key requirement for this program is that the output be "very
+ * reproducible."  So we mask away information that can accidentally
+ * change.
+ **/
 
 
 #include "rsync.h"
@@ -50,6 +46,7 @@
 int dry_run = 0;
 int read_only = 1;
 int list_only = 0;
+int preserve_perms = 0;
 
 
 static void failed (char const *what,
@@ -62,27 +59,75 @@ static void failed (char const *what,
 
 
 
-static void list_dir (char const *dn)
+static void list_file (const char *fname)
 {
-	DIR *d;
-	struct dirent *de;
+	STRUCT_STAT buf;
+	char permbuf[PERMSTRING_SIZE];
+	struct tm *mt;
+	char datebuf[50];
+	char linkbuf[4096];
+
+	if (do_lstat(fname, &buf) == -1)
+		failed ("stat", fname);
+
+	/* The size of anything but a regular file is probably not
+	 * worth thinking about. */
+	if (!S_ISREG(buf.st_mode))
+		buf.st_size = 0;
+
+	/* On some BSD platforms the mode bits of a symlink are
+	 * undefined.  Also it tends not to be possible to reset a
+	 * symlink's mtime, so we have to ignore it too. */
+	if (S_ISLNK(buf.st_mode)) {
+		int len;
+		buf.st_mode &= ~0777;
+		buf.st_mtime = (time_t)0;
+		buf.st_uid = buf.st_gid = 0;
+		strcpy(linkbuf, " -> ");
+		/* const-cast required for silly UNICOS headers */
+		len = readlink((char *) fname, linkbuf+4, sizeof(linkbuf) - 4);
+		if (len == -1)
+			failed("readlink", fname);
+		else
+			/* it's not nul-terminated */
+			linkbuf[4+len] = 0;
+	} else {
+		linkbuf[0] = 0;
+	}
 
-	if (!(d = opendir (dn)))
-		failed ("opendir", dn);
+	permstring(permbuf, buf.st_mode);
 
-	while ((de = readdir (d))) {
-		char *dname = d_name (de);
-		if (!strcmp (dname, ".")  ||  !strcmp (dname, ".."))
-			continue;
-		printf ("%s\n", dname);
+	if (buf.st_mtime) {
+		mt = gmtime(&buf.st_mtime);
+
+		sprintf(datebuf, "%04d-%02d-%02d %02d:%02d:%02d",
+			mt->tm_year + 1900,
+			mt->tm_mon + 1,
+			mt->tm_mday,
+			mt->tm_hour,
+			mt->tm_min,
+			mt->tm_sec);
+	} else {
+		strcpy(datebuf, "                   ");
 	}
-	
-	if (closedir (d) == -1)
-		failed ("closedir", dn);
+
+	/* TODO: Perhaps escape special characters in fname? */
+
+	printf("%s ", permbuf);
+	if (IS_DEVICE(buf.st_mode)) {
+		printf("%5ld,%6ld",
+		    (long)major(buf.st_rdev),
+		    (long)minor(buf.st_rdev));
+	} else /* NB: use double for size since it might not fit in a long. */
+		printf("%12.0f", (double)buf.st_size);
+	printf(" %6ld.%-6ld %6ld %s %s%s\n",
+	       (long)buf.st_uid, (long)buf.st_gid, (long)buf.st_nlink,
+	       datebuf, fname, linkbuf);
 }
 
 
-int main (int argc, char *argv[])
+int
+main(int argc, char *argv[])
 {
 	if (argc < 2) {
 		fprintf (stderr, "usage: " PROGRAM " DIR ...\n"
@@ -91,7 +136,7 @@ int main (int argc, char *argv[])
 	}
 
 	for (argv++; *argv; argv++) {
-		list_dir (*argv);
+		list_file (*argv);
 	}
 
 	return 0;