/*-
* SPDX-License-Identifier: BSD-2-Clause
*
* Copyright (C) 1996
* David L. Nugent. 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.
*
* THIS SOFTWARE IS PROVIDED BY DAVID L. NUGENT 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 DAVID L. NUGENT 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.
*/
#ifndef lint
static const char rcsid[] =
"$FreeBSD$";
#endif /* not lint */
#include <sys/stat.h>
#include <dirent.h>
#include <fcntl.h>
#include <string.h>
#include <unistd.h>
#include "pwupd.h"
void
rm_r(int rootfd, const char *path, uid_t uid)
{
int dirfd;
DIR *d;
struct dirent *e;
struct stat st;
if (*path == '/')
path++;
dirfd = openat(rootfd, path, O_DIRECTORY);
if (dirfd == -1) {
return;
}
d = fdopendir(dirfd);
if (d == NULL) {
(void)close(dirfd);
return;
}
while ((e = readdir(d)) != NULL) {
if (strcmp(e->d_name, ".") == 0 || strcmp(e->d_name, "..") == 0)
continue;
if (fstatat(dirfd, e->d_name, &st, AT_SYMLINK_NOFOLLOW) != 0)
continue;
if (S_ISDIR(st.st_mode))
rm_r(dirfd, e->d_name, uid);
else if (S_ISLNK(st.st_mode) || st.st_uid == uid)
unlinkat(dirfd, e->d_name, 0);
}
closedir(d);
if (fstatat(rootfd, path, &st, AT_SYMLINK_NOFOLLOW) != 0)
return;
if (S_ISLNK(st.st_mode))
unlinkat(rootfd, path, 0);
else if (st.st_uid == uid)
unlinkat(rootfd, path, AT_REMOVEDIR);
}
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