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/*
* SPDX-FileCopyrightText: 1991 - 1994, Julianne Frances Haugh
* SPDX-FileCopyrightText: 1996 - 2001, Marek Michałkiewicz
* SPDX-FileCopyrightText: 2003 - 2006, Tomasz Kłoczko
* SPDX-FileCopyrightText: 2007 - 2010, Nicolas François
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include <config.h>
#ident "$Id$"
#include <fcntl.h>
#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"
static int remove_tree_at (int at_fd, const char *path, bool remove_root)
{
DIR *dir;
const struct dirent *ent;
int dir_fd, rc = 0;
dir_fd = openat (at_fd, path, O_RDONLY | O_DIRECTORY | O_NOFOLLOW | O_CLOEXEC);
if (dir_fd < 0) {
return -1;
}
dir = fdopendir (dir_fd);
if (!dir) {
(void) close (dir_fd);
return -1;
}
/*
* Open the source directory and delete each entry.
*/
while ((ent = readdir (dir))) {
struct stat ent_sb;
/*
* Skip the "." and ".." entries
*/
if (strcmp (ent->d_name, ".") == 0 ||
strcmp (ent->d_name, "..") == 0) {
continue;
}
rc = fstatat (dirfd(dir), ent->d_name, &ent_sb, AT_SYMLINK_NOFOLLOW);
if (rc < 0) {
break;
}
if (S_ISDIR (ent_sb.st_mode)) {
/*
* Recursively delete this directory.
*/
if (remove_tree_at (dirfd(dir), ent->d_name, true) != 0) {
rc = -1;
break;
}
} else {
/*
* Delete the file.
*/
if (unlinkat (dirfd(dir), ent->d_name, 0) != 0) {
rc = -1;
break;
}
}
}
(void) closedir (dir);
if (remove_root && (0 == rc)) {
if (unlinkat (at_fd, path, AT_REMOVEDIR) != 0) {
rc = -1;
}
}
return rc;
}
/*
* 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)
{
return remove_tree_at (AT_FDCWD, root, remove_root);
}
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