Commit | Line | Data |
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0f78b815 WD |
1 | /* |
2 | * Trivial ls for comparing two directories after running an rsync. | |
f22ee865 | 3 | * |
0f78b815 | 4 | * Copyright (C) 2001, 2002 Martin Pool <mbp@samba.org> |
d3d07a5e | 5 | * Copyright (C) 2003-2008 Wayne Davison |
f26ac1e8 | 6 | * |
ba2133d6 | 7 | * This program is free software; you can redistribute it and/or modify |
8e41b68e WD |
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. | |
f26ac1e8 | 11 | * |
f22ee865 MP |
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. | |
f26ac1e8 | 16 | * |
e7c67065 WD |
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. | |
f22ee865 MP |
20 | */ |
21 | ||
0f78b815 | 22 | /* The problem with using the system's own ls is that some features |
f22ee865 MP |
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. | |
26 | * | |
4ed886ae MP |
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". | |
f22ee865 | 30 | * |
4ed886ae | 31 | * The format is not exactly the same as any particular Unix ls(1). |
f22ee865 | 32 | * |
4ed886ae MP |
33 | * A key requirement for this program is that the output be "very |
34 | * reproducible." So we mask away information that can accidentally | |
0f78b815 | 35 | * change. */ |
f22ee865 | 36 | |
f22ee865 | 37 | #include "rsync.h" |
8afaef42 | 38 | #include <popt.h> |
9439c0cb | 39 | #include "lib/sysxattrs.h" |
f22ee865 MP |
40 | |
41 | #define PROGRAM "tls" | |
42 | ||
43 | /* These are to make syscall.o shut up. */ | |
44 | int dry_run = 0; | |
9439c0cb | 45 | int am_root = 0; |
f22ee865 MP |
46 | int read_only = 1; |
47 | int list_only = 0; | |
5b385336 WD |
48 | int link_times = 0; |
49 | int link_owner = 0; | |
522c05cf | 50 | int preserve_perms = 0; |
e35ad79b | 51 | int preserve_executability = 0; |
f22ee865 | 52 | |
acac1f5c WD |
53 | #ifdef SUPPORT_XATTRS |
54 | ||
9439c0cb WD |
55 | #ifdef HAVE_LINUX_XATTRS |
56 | #define XSTAT_ATTR "user.rsync.%stat" | |
57 | #else | |
58 | #define XSTAT_ATTR "rsync.%stat" | |
59 | #endif | |
60 | ||
61 | static int stat_xattr(const char *fname, STRUCT_STAT *fst) | |
62 | { | |
63 | int mode, rdev_major, rdev_minor, uid, gid, len; | |
64 | char buf[256]; | |
65 | ||
66 | if (am_root >= 0 || IS_DEVICE(fst->st_mode) || IS_SPECIAL(fst->st_mode)) | |
67 | return -1; | |
68 | ||
69 | len = sys_lgetxattr(fname, XSTAT_ATTR, buf, sizeof buf - 1); | |
70 | if (len >= (int)sizeof buf) { | |
71 | len = -1; | |
72 | errno = ERANGE; | |
73 | } | |
74 | if (len < 0) { | |
75 | if (errno == ENOTSUP || errno == ENOATTR) | |
76 | return -1; | |
77 | if (errno == EPERM && S_ISLNK(fst->st_mode)) { | |
78 | fst->st_uid = 0; | |
79 | fst->st_gid = 0; | |
80 | return 0; | |
81 | } | |
82 | fprintf(stderr, "failed to read xattr %s for %s: %s\n", | |
83 | XSTAT_ATTR, fname, strerror(errno)); | |
84 | return -1; | |
85 | } | |
86 | buf[len] = '\0'; | |
87 | ||
88 | if (sscanf(buf, "%o %d,%d %d:%d", | |
89 | &mode, &rdev_major, &rdev_minor, &uid, &gid) != 5) { | |
90 | fprintf(stderr, "Corrupt %s xattr attached to %s: \"%s\"\n", | |
91 | XSTAT_ATTR, fname, buf); | |
92 | exit(1); | |
93 | } | |
94 | ||
1b42f628 WD |
95 | #if _S_IFLNK != 0120000 |
96 | if ((mode & (_S_IFMT)) == 0120000) | |
97 | mode = (mode & ~(_S_IFMT)) | _S_IFLNK; | |
98 | #endif | |
99 | fst->st_mode = mode; | |
100 | ||
9439c0cb WD |
101 | fst->st_rdev = MAKEDEV(rdev_major, rdev_minor); |
102 | fst->st_uid = uid; | |
103 | fst->st_gid = gid; | |
104 | ||
105 | return 0; | |
106 | } | |
107 | ||
acac1f5c WD |
108 | #endif |
109 | ||
630e3c40 | 110 | static void failed(char const *what, char const *where) |
f22ee865 | 111 | { |
630e3c40 WD |
112 | fprintf(stderr, PROGRAM ": %s %s: %s\n", |
113 | what, where, strerror(errno)); | |
114 | exit(1); | |
f22ee865 MP |
115 | } |
116 | ||
630e3c40 | 117 | static void list_file(const char *fname) |
f22ee865 | 118 | { |
d0f821ad | 119 | STRUCT_STAT buf; |
4ed886ae MP |
120 | char permbuf[PERMSTRING_SIZE]; |
121 | struct tm *mt; | |
dd0700b0 | 122 | char datebuf[50]; |
1336e414 | 123 | char linkbuf[4096]; |
4ed886ae | 124 | |
018b2832 | 125 | if (do_lstat(fname, &buf) < 0) |
630e3c40 | 126 | failed("stat", fname); |
acac1f5c | 127 | #ifdef SUPPORT_XATTRS |
9439c0cb WD |
128 | if (am_root < 0) |
129 | stat_xattr(fname, &buf); | |
acac1f5c | 130 | #endif |
4ed886ae | 131 | |
2d4c8e59 MP |
132 | /* The size of anything but a regular file is probably not |
133 | * worth thinking about. */ | |
134 | if (!S_ISREG(buf.st_mode)) | |
4ed886ae | 135 | buf.st_size = 0; |
f22ee865 | 136 | |
dd0700b0 MP |
137 | /* On some BSD platforms the mode bits of a symlink are |
138 | * undefined. Also it tends not to be possible to reset a | |
5b385336 | 139 | * symlink's mtime, so we default to ignoring it too. */ |
dd0700b0 | 140 | if (S_ISLNK(buf.st_mode)) { |
0771727d | 141 | int len; |
dd0700b0 | 142 | buf.st_mode &= ~0777; |
5b385336 WD |
143 | if (!link_times) |
144 | buf.st_mtime = (time_t)0; | |
145 | if (!link_owner) | |
146 | buf.st_uid = buf.st_gid = 0; | |
c9bce0b8 | 147 | strlcpy(linkbuf, " -> ", sizeof linkbuf); |
acf1af0c | 148 | /* const-cast required for silly UNICOS headers */ |
0771727d | 149 | len = readlink((char *) fname, linkbuf+4, sizeof(linkbuf) - 4); |
f26ac1e8 | 150 | if (len == -1) |
0771727d MP |
151 | failed("readlink", fname); |
152 | else | |
153 | /* it's not nul-terminated */ | |
154 | linkbuf[4+len] = 0; | |
1336e414 MP |
155 | } else { |
156 | linkbuf[0] = 0; | |
dd0700b0 | 157 | } |
f22ee865 | 158 | |
dd0700b0 | 159 | permstring(permbuf, buf.st_mode); |
4ed886ae | 160 | |
dd0700b0 MP |
161 | if (buf.st_mtime) { |
162 | mt = gmtime(&buf.st_mtime); | |
f26ac1e8 | 163 | |
185aa5b0 WD |
164 | snprintf(datebuf, sizeof datebuf, |
165 | "%04d-%02d-%02d %02d:%02d:%02d", | |
e31058d4 WD |
166 | (int)mt->tm_year + 1900, |
167 | (int)mt->tm_mon + 1, | |
168 | (int)mt->tm_mday, | |
169 | (int)mt->tm_hour, | |
170 | (int)mt->tm_min, | |
171 | (int)mt->tm_sec); | |
185aa5b0 | 172 | } else |
c9bce0b8 | 173 | strlcpy(datebuf, " ", sizeof datebuf); |
f26ac1e8 | 174 | |
4ed886ae | 175 | /* TODO: Perhaps escape special characters in fname? */ |
f26ac1e8 WD |
176 | |
177 | printf("%s ", permbuf); | |
48d3ff94 | 178 | if (S_ISCHR(buf.st_mode) || S_ISBLK(buf.st_mode)) { |
0e1d98ae WD |
179 | printf("%5ld,%6ld", |
180 | (long)major(buf.st_rdev), | |
181 | (long)minor(buf.st_rdev)); | |
182 | } else /* NB: use double for size since it might not fit in a long. */ | |
f26ac1e8 WD |
183 | printf("%12.0f", (double)buf.st_size); |
184 | printf(" %6ld.%-6ld %6ld %s %s%s\n", | |
185 | (long)buf.st_uid, (long)buf.st_gid, (long)buf.st_nlink, | |
1336e414 | 186 | datebuf, fname, linkbuf); |
f22ee865 MP |
187 | } |
188 | ||
db9c9e27 WD |
189 | static struct poptOption long_options[] = { |
190 | /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */ | |
5b385336 WD |
191 | {"link-times", 'l', POPT_ARG_NONE, &link_times, 0, 0, 0 }, |
192 | {"link-owner", 'L', POPT_ARG_NONE, &link_owner, 0, 0, 0 }, | |
acac1f5c | 193 | #ifdef SUPPORT_XATTRS |
db9c9e27 | 194 | {"fake-super", 'f', POPT_ARG_VAL, &am_root, -1, 0, 0 }, |
acac1f5c | 195 | #endif |
db9c9e27 WD |
196 | {"help", 'h', POPT_ARG_NONE, 0, 'h', 0, 0 }, |
197 | {0,0,0,0,0,0,0} | |
198 | }; | |
199 | ||
200 | static void tls_usage(int ret) | |
201 | { | |
202 | FILE *F = ret ? stderr : stdout; | |
203 | fprintf(F,"usage: " PROGRAM " [OPTIONS] FILE ...\n"); | |
204 | fprintf(F,"Trivial file listing program for portably checking rsync\n"); | |
205 | fprintf(F,"\nOptions:\n"); | |
5b385336 WD |
206 | fprintf(F," -l, --link-times display the time on a symlink\n"); |
207 | fprintf(F," -L, --link-owner display the owner+group on a symlink\n"); | |
acac1f5c | 208 | #ifdef SUPPORT_XATTRS |
9a234269 | 209 | fprintf(F," -f, --fake-super display attributes including fake-super xattrs\n"); |
acac1f5c | 210 | #endif |
9a234269 | 211 | fprintf(F," -h, --help show this help\n"); |
db9c9e27 WD |
212 | exit(ret); |
213 | } | |
214 | ||
f69204ad WD |
215 | int |
216 | main(int argc, char *argv[]) | |
f22ee865 | 217 | { |
db9c9e27 WD |
218 | poptContext pc; |
219 | const char **extra_args; | |
220 | int opt; | |
221 | ||
222 | pc = poptGetContext(PROGRAM, argc, (const char **)argv, | |
223 | long_options, 0); | |
224 | while ((opt = poptGetNextOpt(pc)) != -1) { | |
225 | switch (opt) { | |
226 | case 'h': | |
227 | tls_usage(0); | |
228 | default: | |
229 | fprintf(stderr, | |
230 | "%s: %s\n", | |
231 | poptBadOption(pc, POPT_BADOPTION_NOALIAS), | |
232 | poptStrerror(opt)); | |
233 | tls_usage(1); | |
234 | } | |
f22ee865 MP |
235 | } |
236 | ||
db9c9e27 WD |
237 | extra_args = poptGetArgs(pc); |
238 | if (!extra_args || *extra_args == NULL) | |
239 | tls_usage(1); | |
9439c0cb | 240 | |
db9c9e27 WD |
241 | for (; *extra_args; extra_args++) |
242 | list_file(*extra_args); | |
243 | poptFreeContext(pc); | |
f22ee865 MP |
244 | |
245 | return 0; | |
246 | } |