a75f9261d6
When deleting a user, if its home directory does not belong to it, it should not be removed. This is the promise that the manpage makes, the tool should ensure that it respects that promise. Add a regression test about it PR: 244967 Submitted by: Eric Hanneken <eric@erichanneken.com> MFC after: 3 days
79 lines
2.4 KiB
C
79 lines
2.4 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (C) 1996
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* David L. Nugent. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY DAVID L. NUGENT AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL DAVID L. NUGENT OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef lint
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static const char rcsid[] =
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"$FreeBSD$";
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#endif /* not lint */
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#include <sys/stat.h>
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#include <dirent.h>
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#include <fcntl.h>
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#include <string.h>
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#include <unistd.h>
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#include "pwupd.h"
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void
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rm_r(int rootfd, const char *path, uid_t uid)
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{
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int dirfd;
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DIR *d;
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struct dirent *e;
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struct stat st;
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if (*path == '/')
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path++;
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dirfd = openat(rootfd, path, O_DIRECTORY);
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if (dirfd == -1) {
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return;
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}
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d = fdopendir(dirfd);
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while ((e = readdir(d)) != NULL) {
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if (strcmp(e->d_name, ".") == 0 || strcmp(e->d_name, "..") == 0)
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continue;
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if (fstatat(dirfd, e->d_name, &st, AT_SYMLINK_NOFOLLOW) != 0)
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continue;
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if (S_ISDIR(st.st_mode))
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rm_r(dirfd, e->d_name, uid);
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else if (S_ISLNK(st.st_mode) || st.st_uid == uid)
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unlinkat(dirfd, e->d_name, 0);
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}
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closedir(d);
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if (fstatat(rootfd, path, &st, AT_SYMLINK_NOFOLLOW) != 0)
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return;
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if (S_ISLNK(st.st_mode))
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unlinkat(rootfd, path, 0);
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else if (st.st_uid == uid)
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unlinkat(rootfd, path, AT_REMOVEDIR);
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}
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