808a36ef65
This will make a number of things easier in the future, as well as (finally!) avoiding the Id-smashing problem which has plagued developers for so long. Boy, I'm glad we're not using sup anymore. This update would have been insane otherwise.
72 lines
2.2 KiB
C
72 lines
2.2 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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* $FreeBSD$
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <sys/param.h>
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#include <unistd.h>
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#include <dirent.h>
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#include "pwupd.h"
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void
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rm_r(char const * dir, uid_t uid)
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{
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DIR *d = opendir(dir);
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if (d != NULL) {
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struct dirent *e;
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struct stat st;
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char file[MAXPATHLEN];
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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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sprintf(file, "%s/%s", dir, e->d_name);
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if (lstat(file, &st) == 0) { /* Need symlinks, not
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* linked file */
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if (S_ISDIR(st.st_mode)) /* Directory - recurse */
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rm_r(file, uid);
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else {
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if (S_ISLNK(st.st_mode) || st.st_uid == uid)
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remove(file);
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}
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}
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}
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}
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closedir(d);
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if (lstat(dir, &st) == 0) {
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if (S_ISLNK(st.st_mode))
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remove(dir);
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else if (st.st_uid == uid)
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rmdir(dir);
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}
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}
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}
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