1 files changed, 70 insertions, 0 deletions
diff --git a/usr.sbin/pw/rm_r.c b/usr.sbin/pw/rm_r.c
new file mode 100644
index 0000000..172c7b0
--- /dev/null
+++ b/usr.sbin/pw/rm_r.c
@@ -0,0 +1,70 @@
+/*-
+ * 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);
+
+	d = fdopendir(dirfd);
+	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;
+	unlinkat(rootfd, path, S_ISDIR(st.st_mode) ? AT_REMOVEDIR : 0);
+}