| 1 | /* -*- c-file-style: "linux" -*- |
| 2 | * |
| 3 | * Copyright (C) 2001, 2002 by Martin Pool <mbp@samba.org> |
| 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 | /** |
| 20 | * \section tls |
| 21 | * |
| 22 | * tls -- Trivial recursive ls, for comparing two directories after |
| 23 | * running an rsync. |
| 24 | * |
| 25 | * The problem with using the system's own ls is that some features |
| 26 | * have little quirks that make directories look different when for |
| 27 | * our purposes they're the same -- for example, the BSD braindamage |
| 28 | * about setting the mode on symlinks based on your current umask. |
| 29 | * |
| 30 | * All the filenames must be given on the command line -- tls does not |
| 31 | * even read directories, let alone recurse. The typical usage is |
| 32 | * "find|sort|xargs tls". |
| 33 | * |
| 34 | * The format is not exactly the same as any particular Unix ls(1). |
| 35 | * |
| 36 | * A key requirement for this program is that the output be "very |
| 37 | * reproducible." So we mask away information that can accidentally |
| 38 | * change. |
| 39 | **/ |
| 40 | |
| 41 | |
| 42 | |
| 43 | #include "rsync.h" |
| 44 | |
| 45 | #define PROGRAM "tls" |
| 46 | |
| 47 | /* These are to make syscall.o shut up. */ |
| 48 | int dry_run = 0; |
| 49 | int read_only = 1; |
| 50 | int list_only = 0; |
| 51 | |
| 52 | |
| 53 | static void failed (char const *what, |
| 54 | char const *where) |
| 55 | { |
| 56 | fprintf (stderr, PROGRAM ": %s %s: %s\n", |
| 57 | what, where, strerror (errno)); |
| 58 | exit (1); |
| 59 | } |
| 60 | |
| 61 | |
| 62 | |
| 63 | static void list_file (const char *fname) |
| 64 | { |
| 65 | STRUCT_STAT buf; |
| 66 | char permbuf[PERMSTRING_SIZE]; |
| 67 | struct tm *mt; |
| 68 | char datebuf[50]; |
| 69 | char linkbuf[4096]; |
| 70 | |
| 71 | if (do_lstat(fname, &buf) == -1) |
| 72 | failed ("stat", fname); |
| 73 | |
| 74 | /* The size of anything but a regular file is probably not |
| 75 | * worth thinking about. */ |
| 76 | if (!S_ISREG(buf.st_mode)) |
| 77 | buf.st_size = 0; |
| 78 | |
| 79 | /* On some BSD platforms the mode bits of a symlink are |
| 80 | * undefined. Also it tends not to be possible to reset a |
| 81 | * symlink's mtime, so we have to ignore it too. */ |
| 82 | if (S_ISLNK(buf.st_mode)) { |
| 83 | int len; |
| 84 | buf.st_mode &= ~0777; |
| 85 | buf.st_mtime = (time_t)0; |
| 86 | buf.st_uid = buf.st_gid = 0; |
| 87 | strcpy(linkbuf, " -> "); |
| 88 | /* const-cast required for silly UNICOS headers */ |
| 89 | len = readlink((char *) fname, linkbuf+4, sizeof(linkbuf) - 4); |
| 90 | if (len == -1) |
| 91 | failed("readlink", fname); |
| 92 | else |
| 93 | /* it's not nul-terminated */ |
| 94 | linkbuf[4+len] = 0; |
| 95 | } else { |
| 96 | linkbuf[0] = 0; |
| 97 | } |
| 98 | |
| 99 | permstring(permbuf, buf.st_mode); |
| 100 | |
| 101 | if (buf.st_mtime) { |
| 102 | mt = gmtime(&buf.st_mtime); |
| 103 | |
| 104 | sprintf(datebuf, "%04d-%02d-%02d %02d:%02d:%02d", |
| 105 | mt->tm_year + 1900, |
| 106 | mt->tm_mon + 1, |
| 107 | mt->tm_mday, |
| 108 | mt->tm_hour, |
| 109 | mt->tm_min, |
| 110 | mt->tm_sec); |
| 111 | } else { |
| 112 | strcpy(datebuf, " "); |
| 113 | } |
| 114 | |
| 115 | /* TODO: Perhaps escape special characters in fname? */ |
| 116 | |
| 117 | |
| 118 | /* NB: need to pass size as a double because it might be be |
| 119 | * too large for a long. */ |
| 120 | printf("%s %12.0f %6d.%-6d %6d %s %s%s\n", |
| 121 | permbuf, (double) buf.st_size, |
| 122 | buf.st_uid, buf.st_gid, |
| 123 | buf.st_nlink, |
| 124 | datebuf, fname, linkbuf); |
| 125 | } |
| 126 | |
| 127 | |
| 128 | int main (int argc, char *argv[]) |
| 129 | { |
| 130 | if (argc < 2) { |
| 131 | fprintf (stderr, "usage: " PROGRAM " DIR ...\n" |
| 132 | "Trivial file listing program for portably checking rsync\n"); |
| 133 | return 1; |
| 134 | } |
| 135 | |
| 136 | for (argv++; *argv; argv++) { |
| 137 | list_file (*argv); |
| 138 | } |
| 139 | |
| 140 | return 0; |
| 141 | } |