2 * Trivial ls for comparing two directories after running an rsync.
4 * Copyright (C) 2001, 2002 Martin Pool <mbp@samba.org>
5 * Copyright (C) 2003-2009 Wayne Davison
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 3 of the License, or
10 * (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License along
18 * with this program; if not, write to the Free Software Foundation, Inc.,
19 * 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.
22 /* The problem with using the system's own ls is that some features
23 * have little quirks that make directories look different when for
24 * our purposes they're the same -- for example, the BSD braindamage
25 * about setting the mode on symlinks based on your current umask.
27 * All the filenames must be given on the command line -- tls does not
28 * even read directories, let alone recurse. The typical usage is
29 * "find|sort|xargs tls".
31 * The format is not exactly the same as any particular Unix ls(1).
33 * A key requirement for this program is that the output be "very
34 * reproducible." So we mask away information that can accidentally
39 #include "lib/sysxattrs.h"
43 /* These are to make syscall.o shut up. */
50 int preserve_perms = 0;
51 int preserve_executability = 0;
52 char number_separator;
56 #ifdef HAVE_LINUX_XATTRS
57 #define XSTAT_ATTR "user.rsync.%stat"
59 #define XSTAT_ATTR "rsync.%stat"
62 static int stat_xattr(const char *fname, STRUCT_STAT *fst)
64 int mode, rdev_major, rdev_minor, uid, gid, len;
67 if (am_root >= 0 || IS_DEVICE(fst->st_mode) || IS_SPECIAL(fst->st_mode))
70 len = sys_lgetxattr(fname, XSTAT_ATTR, buf, sizeof buf - 1);
71 if (len >= (int)sizeof buf) {
76 if (errno == ENOTSUP || errno == ENOATTR)
78 if (errno == EPERM && S_ISLNK(fst->st_mode)) {
83 fprintf(stderr, "failed to read xattr %s for %s: %s\n",
84 XSTAT_ATTR, fname, strerror(errno));
89 if (sscanf(buf, "%o %d,%d %d:%d",
90 &mode, &rdev_major, &rdev_minor, &uid, &gid) != 5) {
91 fprintf(stderr, "Corrupt %s xattr attached to %s: \"%s\"\n",
92 XSTAT_ATTR, fname, buf);
96 #if _S_IFLNK != 0120000
97 if ((mode & (_S_IFMT)) == 0120000)
98 mode = (mode & ~(_S_IFMT)) | _S_IFLNK;
102 fst->st_rdev = MAKEDEV(rdev_major, rdev_minor);
111 static void failed(char const *what, char const *where)
113 fprintf(stderr, PROGRAM ": %s %s: %s\n",
114 what, where, strerror(errno));
118 static void list_file(const char *fname)
121 char permbuf[PERMSTRING_SIZE];
126 if (do_lstat(fname, &buf) < 0)
127 failed("stat", fname);
128 #ifdef SUPPORT_XATTRS
130 stat_xattr(fname, &buf);
133 /* The size of anything but a regular file is probably not
134 * worth thinking about. */
135 if (!S_ISREG(buf.st_mode))
138 /* On some BSD platforms the mode bits of a symlink are
139 * undefined. Also it tends not to be possible to reset a
140 * symlink's mtime, so we default to ignoring it too. */
141 if (S_ISLNK(buf.st_mode)) {
143 buf.st_mode &= ~0777;
145 buf.st_mtime = (time_t)0;
147 buf.st_uid = buf.st_gid = 0;
148 strlcpy(linkbuf, " -> ", sizeof linkbuf);
149 /* const-cast required for silly UNICOS headers */
150 len = readlink((char *) fname, linkbuf+4, sizeof(linkbuf) - 4);
152 failed("readlink", fname);
154 /* it's not nul-terminated */
160 permstring(permbuf, buf.st_mode);
163 mt = gmtime(&buf.st_mtime);
165 snprintf(datebuf, sizeof datebuf,
166 "%04d-%02d-%02d %02d:%02d:%02d",
167 (int)mt->tm_year + 1900,
174 strlcpy(datebuf, " ", sizeof datebuf);
176 /* TODO: Perhaps escape special characters in fname? */
178 printf("%s ", permbuf);
179 if (S_ISCHR(buf.st_mode) || S_ISBLK(buf.st_mode)) {
181 (long)major(buf.st_rdev),
182 (long)minor(buf.st_rdev));
184 printf("%15s", do_big_num(buf.st_size, 1, NULL));
185 printf(" %6ld.%-6ld %6ld %s %s%s\n",
186 (long)buf.st_uid, (long)buf.st_gid, (long)buf.st_nlink,
187 datebuf, fname, linkbuf);
190 static struct poptOption long_options[] = {
191 /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */
192 {"link-times", 'l', POPT_ARG_NONE, &link_times, 0, 0, 0 },
193 {"link-owner", 'L', POPT_ARG_NONE, &link_owner, 0, 0, 0 },
194 #ifdef SUPPORT_XATTRS
195 {"fake-super", 'f', POPT_ARG_VAL, &am_root, -1, 0, 0 },
197 {"help", 'h', POPT_ARG_NONE, 0, 'h', 0, 0 },
201 static void tls_usage(int ret)
203 FILE *F = ret ? stderr : stdout;
204 fprintf(F,"usage: " PROGRAM " [OPTIONS] FILE ...\n");
205 fprintf(F,"Trivial file listing program for portably checking rsync\n");
206 fprintf(F,"\nOptions:\n");
207 fprintf(F," -l, --link-times display the time on a symlink\n");
208 fprintf(F," -L, --link-owner display the owner+group on a symlink\n");
209 #ifdef SUPPORT_XATTRS
210 fprintf(F," -f, --fake-super display attributes including fake-super xattrs\n");
212 fprintf(F," -h, --help show this help\n");
217 main(int argc, char *argv[])
220 const char **extra_args;
224 pc = poptGetContext(PROGRAM, argc, (const char **)argv,
226 while ((opt = poptGetNextOpt(pc)) != -1) {
233 poptBadOption(pc, POPT_BADOPTION_NOALIAS),
239 extra_args = poptGetArgs(pc);
240 if (!extra_args || *extra_args == NULL)
243 snprintf(buf, sizeof buf, "%f", 3.14);
244 if (strchr(buf, '.') != NULL)
245 number_separator = ',';
247 number_separator = '.';
249 for (; *extra_args; extra_args++)
250 list_file(*extra_args);