ls for comparing two directories after running an rsync.
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Go to the source code of this file.
Functions | |
| void | failed (char const *what, char const *where) |
| void | list_file (const char *fname) |
| int | main (int argc, char *argv[]) |
Variables | |
| int | dry_run = 0 |
| int | read_only = 1 |
| int | list_only = 0 |
ls for comparing two directories after running an rsync.
The problem with using the system's own ls is that some features have little quirks that make directories look different when for our purposes they're the same -- for example, the BSD braindamage about setting the mode on symlinks based on your current umask.
All the filenames must be given on the command line -- tls does not even read directories, let alone recurse. The typical usage is "find|sort|xargs tls".
The format is not exactly the same as any particular Unix ls(1).
A key requirement for this program is that the output be "very reproducible." So we mask away information that can accidentally change.
Definition in file tls.c.
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Definition at line 51 of file tls.c. Referenced by list_file().
00053 {
00054 fprintf (stderr, PROGRAM ": %s %s: %s\n",
00055 what, where, strerror (errno));
00056 exit (1);
00057 }
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Definition at line 61 of file tls.c. References do_lstat(), failed(), permstring(), and sprintf(). Referenced by main().
00062 {
00063 STRUCT_STAT buf;
00064 char permbuf[PERMSTRING_SIZE];
00065 struct tm *mt;
00066 char datebuf[50];
00067 char linkbuf[4096];
00068
00069 if (do_lstat(fname, &buf) == -1)
00070 failed ("stat", fname);
00071
00072 /* The size of anything but a regular file is probably not
00073 * worth thinking about. */
00074 if (!S_ISREG(buf.st_mode))
00075 buf.st_size = 0;
00076
00077 /* On some BSD platforms the mode bits of a symlink are
00078 * undefined. Also it tends not to be possible to reset a
00079 * symlink's mtime, so we have to ignore it too. */
00080 if (S_ISLNK(buf.st_mode)) {
00081 int len;
00082 buf.st_mode &= ~0777;
00083 buf.st_mtime = (time_t)0;
00084 buf.st_uid = buf.st_gid = 0;
00085 strcpy(linkbuf, " -> ");
00086 /* const-cast required for silly UNICOS headers */
00087 len = readlink((char *) fname, linkbuf+4, sizeof(linkbuf) - 4);
00088 if (len == -1)
00089 failed("readlink", fname);
00090 else
00091 /* it's not nul-terminated */
00092 linkbuf[4+len] = 0;
00093 } else {
00094 linkbuf[0] = 0;
00095 }
00096
00097 permstring(permbuf, buf.st_mode);
00098
00099 if (buf.st_mtime) {
00100 mt = gmtime(&buf.st_mtime);
00101
00102 sprintf(datebuf, "%04d-%02d-%02d %02d:%02d:%02d",
00103 mt->tm_year + 1900,
00104 mt->tm_mon + 1,
00105 mt->tm_mday,
00106 mt->tm_hour,
00107 mt->tm_min,
00108 mt->tm_sec);
00109 } else {
00110 strcpy(datebuf, " ");
00111 }
00112
00113 /* TODO: Perhaps escape special characters in fname? */
00114
00115
00116 /* NB: need to pass size as a double because it might be be
00117 * too large for a long. */
00118 printf("%s %12.0f %6ld.%-6ld %6d %s %s%s\n",
00119 permbuf, (double) buf.st_size,
00120 (long) buf.st_uid, (long) buf.st_gid,
00121 buf.st_nlink,
00122 datebuf, fname, linkbuf);
00123 }
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Definition at line 126 of file tls.c. References list_file().
00127 {
00128 if (argc < 2) {
00129 fprintf (stderr, "usage: " PROGRAM " DIR ...\n"
00130 "Trivial file listing program for portably checking rsync\n");
00131 return 1;
00132 }
00133
00134 for (argv++; *argv; argv++) {
00135 list_file (*argv);
00136 }
00137
00138 return 0;
00139 }
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1.2.15