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f22ee865 MP |
1 | /* -*- c-file-style: "linux" -*- |
2 | * | |
ea1438da | 3 | * Copyright (C) 2001, 2002 by Martin Pool <mbp@samba.org> |
f22ee865 MP |
4 | * |
5 | * This program is free software; you can redistribute it and/or | |
6 | * modify it under the terms of the GNU General Public License version | |
7 | * 2 as published by the Free Software Foundation. | |
8 | * | |
9 | * This program is distributed in the hope that it will be useful, | |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | * GNU General Public License for more details. | |
13 | * | |
14 | * You should have received a copy of the GNU General Public License | |
15 | * along with this program; if not, write to the Free Software | |
16 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
17 | */ | |
18 | ||
19 | /** | |
ac13ad10 | 20 | * @file tls.c |
f22ee865 | 21 | * |
ac13ad10 | 22 | * Trivial @c ls for comparing two directories after running an rsync. |
f22ee865 MP |
23 | * |
24 | * The problem with using the system's own ls is that some features | |
25 | * have little quirks that make directories look different when for | |
26 | * our purposes they're the same -- for example, the BSD braindamage | |
27 | * about setting the mode on symlinks based on your current umask. | |
28 | * | |
4ed886ae MP |
29 | * All the filenames must be given on the command line -- tls does not |
30 | * even read directories, let alone recurse. The typical usage is | |
31 | * "find|sort|xargs tls". | |
f22ee865 | 32 | * |
4ed886ae | 33 | * The format is not exactly the same as any particular Unix ls(1). |
f22ee865 | 34 | * |
4ed886ae MP |
35 | * A key requirement for this program is that the output be "very |
36 | * reproducible." So we mask away information that can accidentally | |
37 | * change. | |
38 | **/ | |
f22ee865 MP |
39 | |
40 | ||
f22ee865 MP |
41 | #include "rsync.h" |
42 | ||
43 | #define PROGRAM "tls" | |
44 | ||
45 | /* These are to make syscall.o shut up. */ | |
46 | int dry_run = 0; | |
47 | int read_only = 1; | |
48 | int list_only = 0; | |
49 | ||
50 | ||
51 | static void failed (char const *what, | |
52 | char const *where) | |
53 | { | |
54 | fprintf (stderr, PROGRAM ": %s %s: %s\n", | |
55 | what, where, strerror (errno)); | |
56 | exit (1); | |
57 | } | |
58 | ||
59 | ||
60 | ||
4ed886ae | 61 | static void list_file (const char *fname) |
f22ee865 | 62 | { |
d0f821ad | 63 | STRUCT_STAT buf; |
4ed886ae MP |
64 | char permbuf[PERMSTRING_SIZE]; |
65 | struct tm *mt; | |
dd0700b0 | 66 | char datebuf[50]; |
1336e414 | 67 | char linkbuf[4096]; |
4ed886ae MP |
68 | |
69 | if (do_lstat(fname, &buf) == -1) | |
70 | failed ("stat", fname); | |
71 | ||
2d4c8e59 MP |
72 | /* The size of anything but a regular file is probably not |
73 | * worth thinking about. */ | |
74 | if (!S_ISREG(buf.st_mode)) | |
4ed886ae | 75 | buf.st_size = 0; |
f22ee865 | 76 | |
dd0700b0 MP |
77 | /* On some BSD platforms the mode bits of a symlink are |
78 | * undefined. Also it tends not to be possible to reset a | |
79 | * symlink's mtime, so we have to ignore it too. */ | |
80 | if (S_ISLNK(buf.st_mode)) { | |
0771727d | 81 | int len; |
dd0700b0 MP |
82 | buf.st_mode &= ~0777; |
83 | buf.st_mtime = (time_t)0; | |
84 | buf.st_uid = buf.st_gid = 0; | |
1336e414 | 85 | strcpy(linkbuf, " -> "); |
acf1af0c | 86 | /* const-cast required for silly UNICOS headers */ |
0771727d MP |
87 | len = readlink((char *) fname, linkbuf+4, sizeof(linkbuf) - 4); |
88 | if (len == -1) | |
89 | failed("readlink", fname); | |
90 | else | |
91 | /* it's not nul-terminated */ | |
92 | linkbuf[4+len] = 0; | |
1336e414 MP |
93 | } else { |
94 | linkbuf[0] = 0; | |
dd0700b0 | 95 | } |
f22ee865 | 96 | |
dd0700b0 | 97 | permstring(permbuf, buf.st_mode); |
4ed886ae | 98 | |
dd0700b0 MP |
99 | if (buf.st_mtime) { |
100 | mt = gmtime(&buf.st_mtime); | |
101 | ||
102 | sprintf(datebuf, "%04d-%02d-%02d %02d:%02d:%02d", | |
103 | mt->tm_year + 1900, | |
104 | mt->tm_mon + 1, | |
105 | mt->tm_mday, | |
106 | mt->tm_hour, | |
107 | mt->tm_min, | |
108 | mt->tm_sec); | |
109 | } else { | |
110 | strcpy(datebuf, " "); | |
111 | } | |
112 | ||
4ed886ae | 113 | /* TODO: Perhaps escape special characters in fname? */ |
dd0700b0 MP |
114 | |
115 | ||
4ed886ae MP |
116 | /* NB: need to pass size as a double because it might be be |
117 | * too large for a long. */ | |
e35080ce | 118 | printf("%s %12.0f %6ld.%-6ld %6d %s %s%s\n", |
4ed886ae | 119 | permbuf, (double) buf.st_size, |
e35080ce | 120 | (long) buf.st_uid, (long) buf.st_gid, |
ea1438da | 121 | buf.st_nlink, |
1336e414 | 122 | datebuf, fname, linkbuf); |
f22ee865 MP |
123 | } |
124 | ||
125 | ||
126 | int main (int argc, char *argv[]) | |
127 | { | |
128 | if (argc < 2) { | |
129 | fprintf (stderr, "usage: " PROGRAM " DIR ...\n" | |
130 | "Trivial file listing program for portably checking rsync\n"); | |
131 | return 1; | |
132 | } | |
133 | ||
134 | for (argv++; *argv; argv++) { | |
4ed886ae | 135 | list_file (*argv); |
f22ee865 MP |
136 | } |
137 | ||
138 | return 0; | |
139 | } |