2 * Trivial ls for comparing two directories after running an rsync.
4 * Copyright (C) 2001, 2002 Martin Pool <mbp@samba.org>
5 * Copyright (C) 2003, 2004, 2005 Wayne Davison
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License version
9 * 2 as published by the Free Software Foundation.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License along
17 * with this program; if not, write to the Free Software Foundation, Inc.,
18 * 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.
21 /* The problem with using the system's own ls is that some features
22 * have little quirks that make directories look different when for
23 * our purposes they're the same -- for example, the BSD braindamage
24 * about setting the mode on symlinks based on your current umask.
26 * All the filenames must be given on the command line -- tls does not
27 * even read directories, let alone recurse. The typical usage is
28 * "find|sort|xargs tls".
30 * The format is not exactly the same as any particular Unix ls(1).
32 * A key requirement for this program is that the output be "very
33 * reproducible." So we mask away information that can accidentally
40 /* These are to make syscall.o shut up. */
44 int preserve_perms = 0;
46 static void failed(char const *what, char const *where)
48 fprintf(stderr, PROGRAM ": %s %s: %s\n",
49 what, where, strerror(errno));
53 static void list_file(const char *fname)
56 char permbuf[PERMSTRING_SIZE];
61 if (do_lstat(fname, &buf) < 0)
62 failed("stat", fname);
64 /* The size of anything but a regular file is probably not
65 * worth thinking about. */
66 if (!S_ISREG(buf.st_mode))
69 /* On some BSD platforms the mode bits of a symlink are
70 * undefined. Also it tends not to be possible to reset a
71 * symlink's mtime, so we have to ignore it too. */
72 if (S_ISLNK(buf.st_mode)) {
75 buf.st_mtime = (time_t)0;
76 buf.st_uid = buf.st_gid = 0;
77 strlcpy(linkbuf, " -> ", sizeof linkbuf);
78 /* const-cast required for silly UNICOS headers */
79 len = readlink((char *) fname, linkbuf+4, sizeof(linkbuf) - 4);
81 failed("readlink", fname);
83 /* it's not nul-terminated */
89 permstring(permbuf, buf.st_mode);
92 mt = gmtime(&buf.st_mtime);
94 sprintf(datebuf, "%04d-%02d-%02d %02d:%02d:%02d",
95 (int)mt->tm_year + 1900,
102 strlcpy(datebuf, " ", sizeof datebuf);
105 /* TODO: Perhaps escape special characters in fname? */
107 printf("%s ", permbuf);
108 if (S_ISCHR(buf.st_mode) || S_ISBLK(buf.st_mode)) {
110 (long)major(buf.st_rdev),
111 (long)minor(buf.st_rdev));
112 } else /* NB: use double for size since it might not fit in a long. */
113 printf("%12.0f", (double)buf.st_size);
114 printf(" %6ld.%-6ld %6ld %s %s%s\n",
115 (long)buf.st_uid, (long)buf.st_gid, (long)buf.st_nlink,
116 datebuf, fname, linkbuf);
120 main(int argc, char *argv[])
123 fprintf(stderr, "usage: " PROGRAM " DIR ...\n"
124 "Trivial file listing program for portably checking rsync\n");
128 for (argv++; *argv; argv++) {