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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 12:50:00 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 12:50:00 +0000 |
commit | 333f7ecfa3e040191c66b2b92f6c117ca2cbac1d (patch) | |
tree | 178a8f140927896970f47930dae9213161268f10 /libmisc/remove_tree.c | |
parent | Initial commit. (diff) | |
download | shadow-7a3c824ac8e117e9f9605a313cb29c3adb9da24d.tar.xz shadow-7a3c824ac8e117e9f9605a313cb29c3adb9da24d.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.c | 133 |
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; +} + |