From ea648e70a989cca190cd7403fe892fd2dcc290b4 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 5 May 2024 20:37:14 +0200 Subject: Adding upstream version 1:9.11.5.P4+dfsg. Signed-off-by: Daniel Baumann --- lib/isc/unix/fsaccess.c | 87 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 87 insertions(+) create mode 100644 lib/isc/unix/fsaccess.c (limited to 'lib/isc/unix/fsaccess.c') diff --git a/lib/isc/unix/fsaccess.c b/lib/isc/unix/fsaccess.c new file mode 100644 index 0000000..e3cd0bf --- /dev/null +++ b/lib/isc/unix/fsaccess.c @@ -0,0 +1,87 @@ +/* + * Copyright (C) Internet Systems Consortium, Inc. ("ISC") + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + * + * See the COPYRIGHT file distributed with this work for additional + * information regarding copyright ownership. + */ + + +#include + +#include +#include + +#include +#include + +#include "errno2result.h" + +/*! \file + * \brief + * The OS-independent part of the API is in lib/isc. + */ +#include "../fsaccess.c" + +isc_result_t +isc_fsaccess_set(const char *path, isc_fsaccess_t access) { + struct stat statb; + mode_t mode; + bool is_dir = false; + isc_fsaccess_t bits; + isc_result_t result; + + if (stat(path, &statb) != 0) + return (isc__errno2result(errno)); + + if ((statb.st_mode & S_IFDIR) != 0) + is_dir = true; + else if ((statb.st_mode & S_IFREG) == 0) + return (ISC_R_INVALIDFILE); + + result = check_bad_bits(access, is_dir); + if (result != ISC_R_SUCCESS) + return (result); + + /* + * Done with checking bad bits. Set mode_t. + */ + mode = 0; + +#define SET_AND_CLEAR1(modebit) \ + if ((access & bits) != 0) { \ + mode |= modebit; \ + access &= ~bits; \ + } +#define SET_AND_CLEAR(user, group, other) \ + SET_AND_CLEAR1(user); \ + bits <<= STEP; \ + SET_AND_CLEAR1(group); \ + bits <<= STEP; \ + SET_AND_CLEAR1(other); + + bits = ISC_FSACCESS_READ | ISC_FSACCESS_LISTDIRECTORY; + + SET_AND_CLEAR(S_IRUSR, S_IRGRP, S_IROTH); + + bits = ISC_FSACCESS_WRITE | + ISC_FSACCESS_CREATECHILD | + ISC_FSACCESS_DELETECHILD; + + SET_AND_CLEAR(S_IWUSR, S_IWGRP, S_IWOTH); + + bits = ISC_FSACCESS_EXECUTE | + ISC_FSACCESS_ACCESSCHILD; + + SET_AND_CLEAR(S_IXUSR, S_IXGRP, S_IXOTH); + + INSIST(access == 0); + + if (chmod(path, mode) < 0) + return (isc__errno2result(errno)); + + return (ISC_R_SUCCESS); +} -- cgit v1.2.3