-/* -*- c-file-style: "linux" -*-
+/*
+ * Trivial ls for comparing two directories after running an rsync.
+ *
+ * Copyright (C) 2001, 2002 Martin Pool <mbp@samba.org>
+ * Copyright (C) 2003-2007 Wayne Davison
+ *
+ * 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.
*
- * Copyright (C) 2001 by Martin Pool
- *
- * 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.
+ *
+ * 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.,
+ * 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.
*/
-/**
- * \section tls
- *
- * tls -- Trivial recursive ls, for comparing two directories after
- * running an rsync.
- *
- * The problem with using the system's own ls is that some features
+/* 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.
- *
- * At the moment we don't sort the output, but all the files have full
- * names, so you can run it through sort(1).
+ * 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".
*
- * We need to recurse downwards and show all the interesting
- * information and no more.
+ * The format is not exactly the same as any particular Unix ls(1).
*
- * \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"
+#include "lib/sysxattrs.h"
#define PROGRAM "tls"
/* These are to make syscall.o shut up. */
int dry_run = 0;
+int am_root = 0;
int read_only = 1;
int list_only = 0;
+int preserve_perms = 0;
+#ifdef HAVE_LINUX_XATTRS
+#define XSTAT_ATTR "user.rsync.%stat"
+#else
+#define XSTAT_ATTR "rsync.%stat"
+#endif
-static void failed (char const *what,
- char const *where)
+static int stat_xattr(const char *fname, STRUCT_STAT *fst)
{
- fprintf (stderr, PROGRAM ": %s %s: %s\n",
- what, where, strerror (errno));
- exit (1);
-}
+ int mode, rdev_major, rdev_minor, uid, gid, len;
+ char buf[256];
+ if (am_root >= 0 || IS_DEVICE(fst->st_mode) || IS_SPECIAL(fst->st_mode))
+ return -1;
+ len = sys_lgetxattr(fname, XSTAT_ATTR, buf, sizeof buf - 1);
+ if (len >= (int)sizeof buf) {
+ len = -1;
+ errno = ERANGE;
+ }
+ if (len < 0) {
+ if (errno == ENOTSUP || errno == ENOATTR)
+ return -1;
+ if (errno == EPERM && S_ISLNK(fst->st_mode)) {
+ fst->st_uid = 0;
+ fst->st_gid = 0;
+ return 0;
+ }
+ fprintf(stderr, "failed to read xattr %s for %s: %s\n",
+ XSTAT_ATTR, fname, strerror(errno));
+ return -1;
+ }
+ buf[len] = '\0';
-static void list_dir (char const *dn)
-{
- DIR *d;
- struct dirent *de;
+ if (sscanf(buf, "%o %d,%d %d:%d",
+ &mode, &rdev_major, &rdev_minor, &uid, &gid) != 5) {
+ fprintf(stderr, "Corrupt %s xattr attached to %s: \"%s\"\n",
+ XSTAT_ATTR, fname, buf);
+ exit(1);
+ }
- if (!(d = opendir (dn)))
- failed ("opendir", dn);
+ fst->st_mode = from_wire_mode(mode);
+ fst->st_rdev = MAKEDEV(rdev_major, rdev_minor);
+ fst->st_uid = uid;
+ fst->st_gid = gid;
- while ((de = readdir (d))) {
- char *dname = d_name (de);
- if (!strcmp (dname, ".") || !strcmp (dname, ".."))
- continue;
- printf ("%s\n", dname);
- }
-
- if (closedir (d) == -1)
- failed ("closedir", dn);
+ return 0;
+}
+
+static void failed(char const *what, char const *where)
+{
+ fprintf(stderr, PROGRAM ": %s %s: %s\n",
+ what, where, strerror(errno));
+ exit(1);
}
+static void list_file(const char *fname)
+{
+ STRUCT_STAT buf;
+ char permbuf[PERMSTRING_SIZE];
+ struct tm *mt;
+ char datebuf[50];
+ char linkbuf[4096];
+
+ if (do_lstat(fname, &buf) < 0)
+ failed("stat", fname);
+ if (am_root < 0)
+ stat_xattr(fname, &buf);
+
+ /* 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;
+ strlcpy(linkbuf, " -> ", sizeof 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;
+ }
+
+ permstring(permbuf, buf.st_mode);
+
+ if (buf.st_mtime) {
+ mt = gmtime(&buf.st_mtime);
+
+ snprintf(datebuf, sizeof datebuf,
+ "%04d-%02d-%02d %02d:%02d:%02d",
+ (int)mt->tm_year + 1900,
+ (int)mt->tm_mon + 1,
+ (int)mt->tm_mday,
+ (int)mt->tm_hour,
+ (int)mt->tm_min,
+ (int)mt->tm_sec);
+ } else
+ strlcpy(datebuf, " ", sizeof datebuf);
+
+ /* TODO: Perhaps escape special characters in fname? */
+
+ printf("%s ", permbuf);
+ if (S_ISCHR(buf.st_mode) || S_ISBLK(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"
- "Trivial file listing program for portably checking rsync\n");
+ fprintf(stderr, "usage: " PROGRAM " FILE ...\n"
+ "Trivial file listing program for portably checking rsync\n");
return 1;
}
- for (argv++; *argv; argv++) {
- list_dir (*argv);
- }
+ if (getenv("RSYNC_FAKE_SUPER"))
+ am_root = -1;
+
+ for (argv++; *argv; argv++)
+ list_file(*argv);
return 0;
}
Matt McCutchen's Web Site / rsync / rsync.git / blobdiff