Thanks for reporting that problem. The full fix is a bit trickier
than I'd like, but I've installed the following into the gzip CVS
sources.
2006-12-23 Paul Eggert <[EMAIL PROTECTED]>
* NEWS: Fix bug reported by Martin Mares in
<http://bugs.debian.org/177942>.
* gzip.c (treat_stdin): Remove NO_STDIN_FSTAT and NO_PIPE_TIMESTAMP
stuff. It didn't work (led to syntax errors) and was confusing.
Report an error if stdin cannot be statted even if !list && no_time.
Get stdin's size if it is regular.
(treat_file): Do not report an error with setuid, setgid,
sticky, or non-regular, non-directory files if to_stdout.
Allow 'force' to override the caution about sticky files.
Use the same form for time stamps that treat_stdin uses.
--- NEWS 24 Dec 2006 05:25:19 -0000 1.11
+++ NEWS 24 Dec 2006 05:45:05 -0000
@@ -2,6 +2,9 @@ Gzip 1.3.10 (200?-??-??)
* zcmp and zdiff did not work in the usual case, due to a typo.
+* gzip -c and zcat now work on special files, files with special mode bits,
+ and files with multiple hard links.
+
Gzip 1.3.9 (2006-12-15)
* No major changes; only porting fixes.
--- gzip.c 12 Dec 2006 00:03:17 -0000 1.11
+++ gzip.c 24 Dec 2006 05:45:05 -0000
@@ -616,22 +616,16 @@ local void treat_stdin()
strcpy(ifname, "stdin");
strcpy(ofname, "stdout");
- /* Get the time stamp on the input file. */
- time_stamp.tv_nsec = -1; /* The time is unknown by default. */
-
-#ifndef NO_STDIN_FSTAT
- if (list || !no_time) {
- if (fstat(fileno(stdin), &istat) != 0) {
- progerror("standard input");
- do_exit(ERROR);
- }
-# ifdef NO_PIPE_TIMESTAMP
- if (S_ISREG(istat.st_mode))
-# endif
- time_stamp = get_stat_mtime (&istat);
-#endif /* NO_STDIN_FSTAT */
- }
- ifile_size = -1L; /* convention for unknown size */
+ /* Get the file's time stamp and size. */
+ if (fstat (fileno (stdin), &istat) != 0)
+ {
+ progerror ("standard input");
+ do_exit (ERROR);
+ }
+ ifile_size = S_ISREG (istat.st_mode) ? istat.st_size : -1;
+ time_stamp.tv_nsec = -1;
+ if (!no_time || list)
+ time_stamp = get_stat_mtime (&istat);
clear_bufs(); /* clear input and output buffers */
to_stdout = 1;
@@ -710,48 +704,57 @@ local void treat_file(iname)
program_name, ifname));
return;
}
- if (!S_ISREG(istat.st_mode)) {
- WARN((stderr,
- "%s: %s is not a directory or a regular file - ignored\n",
- program_name, ifname));
- close (ifd);
- return;
- }
- if (istat.st_mode & S_ISUID)
+ if (! to_stdout)
{
- WARN ((stderr, "%s: %s is set-user-ID on execution - ignored\n",
- program_name, ifname));
- close (ifd);
- return;
- }
- if (istat.st_mode & S_ISGID)
- {
- WARN ((stderr, "%s: %s is set-group-ID on execution - ignored\n",
- program_name, ifname));
- close (ifd);
- return;
- }
- if (istat.st_mode & S_ISVTX)
- {
- WARN ((stderr, "%s: %s has the sticky bit set - file ignored\n",
- program_name, ifname));
- close (ifd);
- return;
- }
+ if (! S_ISREG (istat.st_mode))
+ {
+ WARN ((stderr,
+ "%s: %s is not a directory or a regular file - ignored\n",
+ program_name, ifname));
+ close (ifd);
+ return;
+ }
+ if (istat.st_mode & S_ISUID)
+ {
+ WARN ((stderr, "%s: %s is set-user-ID on execution - ignored\n",
+ program_name, ifname));
+ close (ifd);
+ return;
+ }
+ if (istat.st_mode & S_ISGID)
+ {
+ WARN ((stderr, "%s: %s is set-group-ID on execution - ignored\n",
+ program_name, ifname));
+ close (ifd);
+ return;
+ }
- if (istat.st_nlink > 1 && !to_stdout && !force) {
- WARN((stderr, "%s: %s has %lu other link%c -- unchanged\n",
- program_name, ifname, (unsigned long) istat.st_nlink - 1,
- istat.st_nlink > 2 ? 's' : ' '));
- close (ifd);
- return;
- }
+ if (! force)
+ {
+ if (istat.st_mode & S_ISVTX)
+ {
+ WARN ((stderr,
+ "%s: %s has the sticky bit set - file ignored\n",
+ program_name, ifname));
+ close (ifd);
+ return;
+ }
+ if (2 <= istat.st_nlink)
+ {
+ WARN ((stderr, "%s: %s has %lu other link%c -- unchanged\n",
+ program_name, ifname,
+ (unsigned long int) istat.st_nlink - 1,
+ istat.st_nlink == 2 ? ' ' : 's'));
+ close (ifd);
+ return;
+ }
+ }
+ }
- ifile_size = istat.st_size;
- if (no_time && !list)
- time_stamp.tv_nsec = -1;
- else
+ ifile_size = S_ISREG (istat.st_mode) ? istat.st_size : -1;
+ time_stamp.tv_nsec = -1;
+ if (!no_time || list)
time_stamp = get_stat_mtime (&istat);
/* Generate output file name. For -r and (-t or -l), skip files
