1d981d8ef5
"/dev/null" PR: 211195 Submitted by: rday <ryan@ryanday.net> Reported by: eniorm <eniorm@gmail.com> MFC after: 1 day
74 lines
2.3 KiB
C
74 lines
2.3 KiB
C
/*-
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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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unlinkat(rootfd, path, S_ISDIR(st.st_mode) ? AT_REMOVEDIR : 0);
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}
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