| 1 | /* |
| 2 | * Trivial ls for comparing two directories after running an rsync. |
| 3 | * |
| 4 | * Copyright (C) 2001, 2002 Martin Pool <mbp@samba.org> |
| 5 | * Copyright (C) 2003, 2004, 2005 Wayne Davison |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or |
| 8 | * modify it under the terms of the GNU General Public License version |
| 9 | * 2 as published by the Free Software Foundation. |
| 10 | * |
| 11 | * This program is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | * GNU General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU General Public License along |
| 17 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 18 | * 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. |
| 19 | */ |
| 20 | |
| 21 | /* The problem with using the system's own ls is that some features |
| 22 | * have little quirks that make directories look different when for |
| 23 | * our purposes they're the same -- for example, the BSD braindamage |
| 24 | * about setting the mode on symlinks based on your current umask. |
| 25 | * |
| 26 | * All the filenames must be given on the command line -- tls does not |
| 27 | * even read directories, let alone recurse. The typical usage is |
| 28 | * "find|sort|xargs tls". |
| 29 | * |
| 30 | * The format is not exactly the same as any particular Unix ls(1). |
| 31 | * |
| 32 | * A key requirement for this program is that the output be "very |
| 33 | * reproducible." So we mask away information that can accidentally |
| 34 | * change. */ |
| 35 | |
| 36 | #include "rsync.h" |
| 37 | |
| 38 | #define PROGRAM "tls" |
| 39 | |
| 40 | /* These are to make syscall.o shut up. */ |
| 41 | int dry_run = 0; |
| 42 | int read_only = 1; |
| 43 | int list_only = 0; |
| 44 | int preserve_perms = 0; |
| 45 | |
| 46 | static void failed(char const *what, char const *where) |
| 47 | { |
| 48 | fprintf(stderr, PROGRAM ": %s %s: %s\n", |
| 49 | what, where, strerror(errno)); |
| 50 | exit(1); |
| 51 | } |
| 52 | |
| 53 | static void list_file(const char *fname) |
| 54 | { |
| 55 | STRUCT_STAT buf; |
| 56 | char permbuf[PERMSTRING_SIZE]; |
| 57 | struct tm *mt; |
| 58 | char datebuf[50]; |
| 59 | char linkbuf[4096]; |
| 60 | |
| 61 | if (do_lstat(fname, &buf) < 0) |
| 62 | failed("stat", fname); |
| 63 | |
| 64 | /* The size of anything but a regular file is probably not |
| 65 | * worth thinking about. */ |
| 66 | if (!S_ISREG(buf.st_mode)) |
| 67 | buf.st_size = 0; |
| 68 | |
| 69 | /* On some BSD platforms the mode bits of a symlink are |
| 70 | * undefined. Also it tends not to be possible to reset a |
| 71 | * symlink's mtime, so we have to ignore it too. */ |
| 72 | if (S_ISLNK(buf.st_mode)) { |
| 73 | int len; |
| 74 | buf.st_mode &= ~0777; |
| 75 | buf.st_mtime = (time_t)0; |
| 76 | buf.st_uid = buf.st_gid = 0; |
| 77 | strlcpy(linkbuf, " -> ", sizeof linkbuf); |
| 78 | /* const-cast required for silly UNICOS headers */ |
| 79 | len = readlink((char *) fname, linkbuf+4, sizeof(linkbuf) - 4); |
| 80 | if (len == -1) |
| 81 | failed("readlink", fname); |
| 82 | else |
| 83 | /* it's not nul-terminated */ |
| 84 | linkbuf[4+len] = 0; |
| 85 | } else { |
| 86 | linkbuf[0] = 0; |
| 87 | } |
| 88 | |
| 89 | permstring(permbuf, buf.st_mode); |
| 90 | |
| 91 | if (buf.st_mtime) { |
| 92 | mt = gmtime(&buf.st_mtime); |
| 93 | |
| 94 | snprintf(datebuf, sizeof datebuf, |
| 95 | "%04d-%02d-%02d %02d:%02d:%02d", |
| 96 | (int)mt->tm_year + 1900, |
| 97 | (int)mt->tm_mon + 1, |
| 98 | (int)mt->tm_mday, |
| 99 | (int)mt->tm_hour, |
| 100 | (int)mt->tm_min, |
| 101 | (int)mt->tm_sec); |
| 102 | } else |
| 103 | strlcpy(datebuf, " ", sizeof datebuf); |
| 104 | |
| 105 | /* TODO: Perhaps escape special characters in fname? */ |
| 106 | |
| 107 | printf("%s ", permbuf); |
| 108 | if (S_ISCHR(buf.st_mode) || S_ISBLK(buf.st_mode)) { |
| 109 | printf("%5ld,%6ld", |
| 110 | (long)major(buf.st_rdev), |
| 111 | (long)minor(buf.st_rdev)); |
| 112 | } else /* NB: use double for size since it might not fit in a long. */ |
| 113 | printf("%12.0f", (double)buf.st_size); |
| 114 | printf(" %6ld.%-6ld %6ld %s %s%s\n", |
| 115 | (long)buf.st_uid, (long)buf.st_gid, (long)buf.st_nlink, |
| 116 | datebuf, fname, linkbuf); |
| 117 | } |
| 118 | |
| 119 | int |
| 120 | main(int argc, char *argv[]) |
| 121 | { |
| 122 | if (argc < 2) { |
| 123 | fprintf(stderr, "usage: " PROGRAM " DIR ...\n" |
| 124 | "Trivial file listing program for portably checking rsync\n"); |
| 125 | return 1; |
| 126 | } |
| 127 | |
| 128 | for (argv++; *argv; argv++) { |
| 129 | list_file(*argv); |
| 130 | } |
| 131 | |
| 132 | return 0; |
| 133 | } |