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