143 lines
3.7 KiB
C
143 lines
3.7 KiB
C
/* -*- c-file-style: "linux" -*-
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*
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* Copyright (C) 2001, 2002 by Martin Pool <mbp@samba.org>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License version
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* 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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/**
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* @file tls.c
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*
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* Trivial @c ls for comparing two directories after running an rsync.
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*
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* The problem with using the system's own ls is that some features
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* have little quirks that make directories look different when for
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* our purposes they're the same -- for example, the BSD braindamage
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* about setting the mode on symlinks based on your current umask.
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*
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* All the filenames must be given on the command line -- tls does not
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* even read directories, let alone recurse. The typical usage is
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* "find|sort|xargs tls".
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*
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* The format is not exactly the same as any particular Unix ls(1).
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*
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* A key requirement for this program is that the output be "very
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* reproducible." So we mask away information that can accidentally
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* change.
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**/
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#include "rsync.h"
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#define PROGRAM "tls"
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/* These are to make syscall.o shut up. */
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int dry_run = 0;
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int read_only = 1;
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int list_only = 0;
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int preserve_perms = 0;
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static void failed(char const *what, char const *where)
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{
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fprintf(stderr, PROGRAM ": %s %s: %s\n",
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what, where, strerror(errno));
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exit(1);
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}
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static void list_file(const char *fname)
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{
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STRUCT_STAT buf;
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char permbuf[PERMSTRING_SIZE];
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struct tm *mt;
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char datebuf[50];
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char linkbuf[4096];
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if (do_lstat(fname, &buf) < 0)
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failed("stat", fname);
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/* The size of anything but a regular file is probably not
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* worth thinking about. */
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if (!S_ISREG(buf.st_mode))
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buf.st_size = 0;
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/* On some BSD platforms the mode bits of a symlink are
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* undefined. Also it tends not to be possible to reset a
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* symlink's mtime, so we have to ignore it too. */
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if (S_ISLNK(buf.st_mode)) {
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int len;
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buf.st_mode &= ~0777;
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buf.st_mtime = (time_t)0;
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buf.st_uid = buf.st_gid = 0;
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strcpy(linkbuf, " -> ");
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/* const-cast required for silly UNICOS headers */
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len = readlink((char *) fname, linkbuf+4, sizeof(linkbuf) - 4);
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if (len == -1)
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failed("readlink", fname);
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else
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/* it's not nul-terminated */
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linkbuf[4+len] = 0;
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} else {
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linkbuf[0] = 0;
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}
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permstring(permbuf, buf.st_mode);
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if (buf.st_mtime) {
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mt = gmtime(&buf.st_mtime);
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sprintf(datebuf, "%04d-%02d-%02d %02d:%02d:%02d",
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mt->tm_year + 1900,
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mt->tm_mon + 1,
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mt->tm_mday,
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mt->tm_hour,
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mt->tm_min,
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mt->tm_sec);
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} else {
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strcpy(datebuf, " ");
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}
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/* TODO: Perhaps escape special characters in fname? */
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printf("%s ", permbuf);
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if (S_ISCHR(buf.st_mode) || S_ISBLK(buf.st_mode)) {
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printf("%5ld,%6ld",
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(long)major(buf.st_rdev),
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(long)minor(buf.st_rdev));
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} else /* NB: use double for size since it might not fit in a long. */
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printf("%12.0f", (double)buf.st_size);
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printf(" %6ld.%-6ld %6ld %s %s%s\n",
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(long)buf.st_uid, (long)buf.st_gid, (long)buf.st_nlink,
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datebuf, fname, linkbuf);
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}
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int
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main(int argc, char *argv[])
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{
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if (argc < 2) {
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fprintf(stderr, "usage: " PROGRAM " DIR ...\n"
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"Trivial file listing program for portably checking rsync\n");
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return 1;
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}
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for (argv++; *argv; argv++) {
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list_file(*argv);
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}
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return 0;
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}
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