mirror of
https://github.com/google/sandboxed-api.git
synced 2024-03-22 13:11:30 +08:00
177b969e8c
PiperOrigin-RevId: 238996664 Change-Id: I9646527e2be68ee0b6b371572b7aafe967102e57 Signed-off-by: Christian Blichmann <cblichmann@google.com>
63 lines
2.0 KiB
C++
63 lines
2.0 KiB
C++
// Copyright 2019 Google LLC. All Rights Reserved.
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
#include "sandboxed_api/sandbox2/util/strerror.h"
|
|
|
|
#include <string.h> // For strerror_r
|
|
|
|
#include <cerrno>
|
|
#include <cstddef>
|
|
|
|
#include "absl/base/attributes.h"
|
|
#include "absl/strings/str_cat.h"
|
|
|
|
namespace sandbox2 {
|
|
namespace {
|
|
|
|
// Only one of these overloads will be used in any given build, as determined by
|
|
// the return type of strerror_r(): char* (for GNU), or int (for XSI). See 'man
|
|
// strerror_r' for more details.
|
|
ABSL_ATTRIBUTE_UNUSED const char* StrErrorR(char* (*strerror_r)(int, char*,
|
|
size_t),
|
|
int errnum, char* buf,
|
|
size_t buflen) {
|
|
return strerror_r(errnum, buf, buflen);
|
|
}
|
|
|
|
// The XSI version (most portable).
|
|
ABSL_ATTRIBUTE_UNUSED const char* StrErrorR(int (*strerror_r)(int, char*,
|
|
size_t),
|
|
int errnum, char* buf,
|
|
size_t buflen) {
|
|
if (strerror_r(errnum, buf, buflen)) {
|
|
*buf = '\0';
|
|
}
|
|
return buf;
|
|
}
|
|
|
|
} // namespace
|
|
|
|
std::string StrError(int errnum) {
|
|
const int saved_errno = errno;
|
|
char buf[100];
|
|
const char* str = StrErrorR(strerror_r, errnum, buf, sizeof(buf));
|
|
if (*str == '\0') {
|
|
return absl::StrCat("Unknown error ", errnum);
|
|
}
|
|
errno = saved_errno;
|
|
return str;
|
|
}
|
|
|
|
} // namespace sandbox2
|