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Subject: bug#75531: [PATCH 1/1] Added new recursive feature to the shred command
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From: Josjuar Lister <josj@HIDDEN>
---
src/shred.c | 111 +++++++++++++++++++++++++++++++++++++++++++++-------
1 file changed, 97 insertions(+), 14 deletions(-)
diff --git a/src/shred.c b/src/shred.c
index 03a260243..c824fc495 100644
--- a/src/shred.c
+++ b/src/shred.c
@@ -128,6 +128,7 @@ static enum remove_method const remove_methods[] =
struct Options
{
+ bool recursive; /* -r flag: shred files and directories recursively */
bool force; /* -f flag: chmod files if necessary */
size_t n_iterations; /* -n flag: Number of iterations */
off_t size; /* -s flag: size of file */
@@ -179,6 +180,7 @@ If FILE is -, shred standard output.\n\
emit_mandatory_arg_note ();
printf (_("\
+ -r, --recursive shred files and directories recursively\n\
-f, --force change permissions to allow writing if necessary\n\
-n, --iterations=N overwrite N times instead of the default (%d)\n\
--random-source=FILE get random bytes from FILE\n\
@@ -1035,6 +1037,7 @@ incname (char *name, size_t len)
static bool
wipename (char *oldname, char const *qoldname, struct Options const *flags)
{
+ printf("wipename\n");
char *newname = xstrdup (oldname);
char *base = last_component (newname);
char *dir = dir_name (newname);
@@ -1079,13 +1082,28 @@ wipename (char *oldname, char const *qoldname, struct Options const *flags)
}
}
- if (unlink (oldname) != 0)
+ struct stat statbuf;
+ if (stat(oldname, &statbuf) == 0 && S_ISDIR(statbuf.st_mode))
{
- error (0, errno, _("%s: failed to remove"), qoldname);
- ok = false;
+ if (rmdir(oldname) != 0)
+ {
+ error(0, errno, _("%s: failed to remove directory"), qoldname);
+ ok = false;
+ }
+ else if (flags->verbose)
+ error(0, 0, _("%s: removed directory"), qoldname);
}
- else if (flags->verbose)
- error (0, 0, _("%s: removed"), qoldname);
+ else
+ {
+ if (unlink (oldname) != 0)
+ {
+ error (0, errno, _("%s: failed to remove"), qoldname);
+ ok = false;
+ }
+ else if (flags->verbose)
+ error (0, 0, _("%s: removed"), qoldname);
+ }
+
if (0 <= dir_fd)
{
if (dosync (dir_fd, qdir) != 0)
@@ -1138,11 +1156,73 @@ wipefile (char *name, char const *qname,
error (0, errno, _("%s: failed to close"), qname);
ok = false;
}
+ printf("remove_file: %u, Ok: %i\n", flags->remove_file, ok);
if (ok && flags->remove_file)
ok = wipename (name, qname, flags);
return ok;
}
+/* Wrapper for handling files simplifies the recursive function */
+static bool
+handle_file (char *name, struct randint_source *s, struct Options const *flags, bool ok)
+{
+ char *qname = xstrdup (quotef (name));
+ if (STREQ (name, "-"))
+ {
+ ok &= wipefd (STDOUT_FILENO, qname, s, flags);
+ }
+ else
+ {
+ /* Plain filename - Note that this overwrites *argv! */
+ ok &= wipefile (name, qname, s, flags);
+ }
+ free (qname);
+ return ok;
+}
+
+
+/* Directory wiping */
+static bool
+wipe_directory (char *name, struct randint_source *s, struct Options const *flags, bool ok)
+{
+ DIR *dir;
+ struct dirent *entry;
+ struct stat statbuf;
+ char path[PATH_MAX];
+
+ if (!(dir = opendir(name)))
+ {
+ error (0, errno, _("cannot open directory %s"), name);
+ return false;
+ }
+
+ while ((entry = readdir(dir)) != nullptr)
+ {
+ if (strcmp(entry->d_name, ".") == 0 || strcmp(entry->d_name, "..") == 0)
+ continue;
+
+ snprintf(path, sizeof(path), "%s/%s", name, entry->d_name);
+ if (lstat(path, &statbuf) == -1)
+ {
+ error (0, errno, _("cannot stat %s"), path);
+ continue;
+ }
+
+ if (S_ISDIR(statbuf.st_mode))
+ {
+ if (!wipe_directory(path, s, flags, ok))
+ return false;
+ }
+ else
+ {
+ handle_file(path, s, flags, ok);
+ }
+ }
+ if (flags->remove_file)
+ ok &= wipename(name, name, flags);
+ closedir(dir);
+ return ok;
+}
/* Buffers for random data. */
static struct randint_source *randint_source;
@@ -1168,7 +1248,6 @@ main (int argc, char **argv)
int i;
char const *random_source = nullptr;
- initialize_main (&argc, &argv);
set_program_name (argv[0]);
setlocale (LC_ALL, "");
bindtextdomain (PACKAGE, LOCALEDIR);
@@ -1179,10 +1258,14 @@ main (int argc, char **argv)
flags.n_iterations = DEFAULT_PASSES;
flags.size = -1;
- while ((c = getopt_long (argc, argv, "fn:s:uvxz", long_opts, nullptr)) != -1)
+ while ((c = getopt_long (argc, argv, "rfn:s:uvxz", long_opts, nullptr)) != -1)
{
switch (c)
{
+ case 'r':
+ flags.recursive = true;
+ flags.remove_file = remove_wipesync;
+ break;
case 'f':
flags.force = true;
break;
@@ -1249,21 +1332,21 @@ main (int argc, char **argv)
quotef (random_source ? random_source : "getrandom"));
atexit (clear_random_data);
+ struct stat statbuf;
for (i = 0; i < n_files; i++)
{
- char *qname = xstrdup (quotef (file[i]));
- if (STREQ (file[i], "-"))
+ if (stat(file[i], &statbuf) == 0 && S_ISDIR(statbuf.st_mode))
{
- ok &= wipefd (STDOUT_FILENO, qname, randint_source, &flags);
+ if (! ok){
+ continue;
+ }
+ ok &= wipe_directory (file[i], randint_source, &flags, ok);
}
else
{
- /* Plain filename - Note that this overwrites *argv! */
- ok &= wipefile (file[i], qname, randint_source, &flags);
+ ok &= handle_file (file[i], randint_source, &flags, ok);
}
- free (qname);
}
-
return ok ? EXIT_SUCCESS : EXIT_FAILURE;
}
/*
--
2.39.5
Content-Disposition: inline Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-Mailer: MIME-tools 5.505 (Entity 5.505) Content-Type: text/plain; charset=utf-8 X-Loop: help-debbugs@HIDDEN From: help-debbugs@HIDDEN (GNU bug Tracking System) To: TheJostler <josj@HIDDEN> Subject: bug#75531: Acknowledgement ([PATCH 1/1] Added new recursive feature to the shred command) Message-ID: <handler.75531.B.1736748195764.ack <at> debbugs.gnu.org> References: <20250112185020.124684-2-josj@HIDDEN> X-Gnu-PR-Message: ack 75531 X-Gnu-PR-Package: coreutils X-Gnu-PR-Keywords: patch Reply-To: 75531 <at> debbugs.gnu.org Date: Mon, 13 Jan 2025 06:04:02 +0000 Thank you for filing a new bug report with debbugs.gnu.org. This is an automatically generated reply to let you know your message has been received. Your message is being forwarded to the package maintainers and other interested parties for their attention; they will reply in due course. Your message has been sent to the package maintainer(s): bug-coreutils@HIDDEN If you wish to submit further information on this problem, please send it to 75531 <at> debbugs.gnu.org. Please do not send mail to help-debbugs@HIDDEN unless you wish to report a problem with the Bug-tracking system. --=20 75531: https://debbugs.gnu.org/cgi/bugreport.cgi?bug=3D75531 GNU Bug Tracking System Contact help-debbugs@HIDDEN with problems
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[86.44.211.146]) by smtp.googlemail.com with ESMTPSA id ffacd0b85a97d-38a8e38f0eesm12052712f8f.61.2025.01.13.02.53.24 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 13 Jan 2025 02:53:25 -0800 (PST) Message-ID: <75167cd9-78af-41ce-b80d-36e578430f8e@HIDDEN> Date: Mon, 13 Jan 2025 10:53:23 +0000 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Beta Subject: Re: bug#75532: [PATCH 0/1] Proposed new feature for the shred command To: TheJostler <josj@HIDDEN>, 75532 <at> debbugs.gnu.org References: <20250112185020.124684-1-josj@HIDDEN> Content-Language: en-US From: =?UTF-8?Q?P=C3=A1draig_Brady?= <P@HIDDEN> In-Reply-To: <20250112185020.124684-1-josj@HIDDEN> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-Spam-Score: 0.3 (/) X-Debbugs-Envelope-To: control X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -0.7 (/) tag 75532 notabug close 75532 stop details below... On 12/01/2025 18:50, TheJostler wrote: > From: Josjuar Lister <josj@HIDDEN> > > Hello Coreutils team, > > My name is Josjuar Lister, I am a 28 year old free-lance software developer from the United Kingdom. > My main work though is System Administration and Security, and of course I'm an avid Linux user. > > Shred is a tool I often used beause I like many others, value my privacy and security. > > I've often needed to securely delete many files in a directory and its subdirectories, but shred does not have a feature to do this. > Oftentimes, I have written scripts to recursively shred files in a directory, but I think it would be useful to have this feature built into the shred command itself. > I decided to add this feature to the shred command and I have tested it to ensure it works as expected. > > I would appreciate it if you could review this patch and consider including it in the next release of coreutils. This was previously discussed at: https://www.gnu.org/software/coreutils/rejected_requests.html#shred The considerations haven't changed in the meantime, so I'm not on for applying this. thank you, Pádraig.
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[86.44.211.146]) by smtp.googlemail.com with ESMTPSA id ffacd0b85a97d-38a8e38f0eesm12052712f8f.61.2025.01.13.02.53.24 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 13 Jan 2025 02:53:25 -0800 (PST) Message-ID: <75167cd9-78af-41ce-b80d-36e578430f8e@HIDDEN> Date: Mon, 13 Jan 2025 10:53:23 +0000 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Beta Subject: Re: bug#75532: [PATCH 0/1] Proposed new feature for the shred command To: TheJostler <josj@HIDDEN>, 75532 <at> debbugs.gnu.org References: <20250112185020.124684-1-josj@HIDDEN> Content-Language: en-US From: =?UTF-8?Q?P=C3=A1draig_Brady?= <P@HIDDEN> In-Reply-To: <20250112185020.124684-1-josj@HIDDEN> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-Spam-Score: 0.3 (/) X-Debbugs-Envelope-To: control X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -0.7 (/) tag 75532 notabug close 75532 stop details below... On 12/01/2025 18:50, TheJostler wrote: > From: Josjuar Lister <josj@HIDDEN> > > Hello Coreutils team, > > My name is Josjuar Lister, I am a 28 year old free-lance software developer from the United Kingdom. > My main work though is System Administration and Security, and of course I'm an avid Linux user. > > Shred is a tool I often used beause I like many others, value my privacy and security. > > I've often needed to securely delete many files in a directory and its subdirectories, but shred does not have a feature to do this. > Oftentimes, I have written scripts to recursively shred files in a directory, but I think it would be useful to have this feature built into the shred command itself. > I decided to add this feature to the shred command and I have tested it to ensure it works as expected. > > I would appreciate it if you could review this patch and consider including it in the next release of coreutils. This was previously discussed at: https://www.gnu.org/software/coreutils/rejected_requests.html#shred The considerations haven't changed in the meantime, so I'm not on for applying this. thank you, Pádraig.
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