summaryrefslogtreecommitdiffstats
path: root/libmisc/remove_tree.c
diff options
context:
space:
mode:
authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 12:50:00 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 12:50:00 +0000
commit333f7ecfa3e040191c66b2b92f6c117ca2cbac1d (patch)
tree178a8f140927896970f47930dae9213161268f10 /libmisc/remove_tree.c
parentInitial commit. (diff)
downloadshadow-333f7ecfa3e040191c66b2b92f6c117ca2cbac1d.tar.xz
shadow-333f7ecfa3e040191c66b2b92f6c117ca2cbac1d.zip
Adding upstream version 1:4.8.1.upstream/1%4.8.1upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r--libmisc/remove_tree.c133
1 files changed, 133 insertions, 0 deletions
diff --git a/libmisc/remove_tree.c b/libmisc/remove_tree.c
new file mode 100644
index 0000000..b2794ab
--- /dev/null
+++ b/libmisc/remove_tree.c
@@ -0,0 +1,133 @@
+/*
+ * Copyright (c) 1991 - 1994, Julianne Frances Haugh
+ * Copyright (c) 1996 - 2001, Marek Michałkiewicz
+ * Copyright (c) 2003 - 2006, Tomasz Kłoczko
+ * Copyright (c) 2007 - 2010, Nicolas François
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. The name of the copyright holders or contributors may not be used to
+ * endorse or promote products derived from this software without
+ * specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <config.h>
+
+#ident "$Id$"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <dirent.h>
+#include <unistd.h>
+#include "prototypes.h"
+#include "defines.h"
+
+/*
+ * remove_tree - delete a directory tree
+ *
+ * remove_tree() walks a directory tree and deletes all the files
+ * and directories.
+ * At the end, it deletes the root directory itself.
+ */
+
+int remove_tree (const char *root, bool remove_root)
+{
+ char *new_name = NULL;
+ int err = 0;
+ struct DIRECT *ent;
+ struct stat sb;
+ DIR *dir;
+
+ /*
+ * Open the source directory and read each entry. Every file
+ * entry in the directory is copied with the UID and GID set
+ * to the provided values. As an added security feature only
+ * regular files (and directories ...) are copied, and no file
+ * is made set-ID.
+ */
+ dir = opendir (root);
+ if (NULL == dir) {
+ return -1;
+ }
+
+ while ((ent = readdir (dir))) {
+ size_t new_len = strlen (root) + strlen (ent->d_name) + 2;
+
+ /*
+ * Skip the "." and ".." entries
+ */
+
+ if (strcmp (ent->d_name, ".") == 0 ||
+ strcmp (ent->d_name, "..") == 0) {
+ continue;
+ }
+
+ /*
+ * Make the filename for the current entry.
+ */
+
+ free (new_name);
+ new_name = (char *) malloc (new_len);
+ if (NULL == new_name) {
+ err = -1;
+ break;
+ }
+ (void) snprintf (new_name, new_len, "%s/%s", root, ent->d_name);
+ if (LSTAT (new_name, &sb) == -1) {
+ continue;
+ }
+
+ if (S_ISDIR (sb.st_mode)) {
+ /*
+ * Recursively delete this directory.
+ */
+ if (remove_tree (new_name, true) != 0) {
+ err = -1;
+ break;
+ }
+ } else {
+ /*
+ * Delete the file.
+ */
+ if (unlink (new_name) != 0) {
+ err = -1;
+ break;
+ }
+ }
+ }
+ if (NULL != new_name) {
+ free (new_name);
+ }
+ (void) closedir (dir);
+
+ if (remove_root && (0 == err)) {
+ if (rmdir (root) != 0) {
+ err = -1;
+ }
+ }
+
+ return err;
+}
+