David Benjamin
33d1049b1f
We use the standard Apache 2.0 file header, described in "APPENDIX: How to apply the Apache License to your work." This was primarily automated by running: git ls-tree -r --name-only HEAD | xargs go run ./util/relicense.go See go/boringssl-relicensing-triage for the results of triaging the output of the tool. As part of this, switch from taking fiat-crypto under MIT license to Apache 2.0. (It is licensed under MIT OR Apache-2.0 OR BSD-1-Clause.) The copyright_summary tool can also be used to confirm we didn't accidentally drop any copyright lines: # Run before the CL git grep -l Copyright | xargs go run ./util/copyright_summary.go -out /tmp/old.json # Run after the CL git grep -l Copyright | xargs go run ./util/copyright_summary.go -compare /tmp/old.json Bug: 364634028 Change-Id: I17c50e761e9d077a1f92e25969e50ed35e320c59 Reviewed-on: https://boringssl-review.googlesource.com/c/boringssl/+/75852 Reviewed-by: Bob Beck <bbe@google.com> Commit-Queue: David Benjamin <davidben@google.com> Reviewed-by: Adam Langley <agl@google.com>
106 lines
2.5 KiB
C++
106 lines
2.5 KiB
C++
// Copyright 2020 The BoringSSL Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// https://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include <openssl/base.h>
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#include <errno.h>
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#include <limits.h>
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#include <stdio.h>
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#include <algorithm>
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#include "internal.h"
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#if defined(OPENSSL_WINDOWS)
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#include <io.h>
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#else
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#include <fcntl.h>
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#include <unistd.h>
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#endif
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ScopedFD OpenFD(const char *path, int flags) {
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#if defined(OPENSSL_WINDOWS)
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return ScopedFD(_open(path, flags));
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#else
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int fd;
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do {
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fd = open(path, flags);
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} while (fd == -1 && errno == EINTR);
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return ScopedFD(fd);
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#endif
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}
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void CloseFD(int fd) {
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#if defined(OPENSSL_WINDOWS)
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_close(fd);
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#else
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close(fd);
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#endif
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}
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bool ReadFromFD(int fd, size_t *out_bytes_read, void *out, size_t num) {
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#if defined(OPENSSL_WINDOWS)
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// On Windows, the buffer must be at most |INT_MAX|. See
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// https://docs.microsoft.com/en-us/cpp/c-runtime-library/reference/read?view=vs-2019
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int ret = _read(fd, out, std::min(size_t{INT_MAX}, num));
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#else
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ssize_t ret;
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do {
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ret = read(fd, out, num);
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} while (ret == -1 && errno == EINVAL);
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#endif
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if (ret < 0) {
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*out_bytes_read = 0;
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return false;
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}
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*out_bytes_read = ret;
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return true;
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}
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bool WriteToFD(int fd, size_t *out_bytes_written, const void *in, size_t num) {
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#if defined(OPENSSL_WINDOWS)
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// The documentation for |_write| does not say the buffer must be at most
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// |INT_MAX|, but clamp it to |INT_MAX| instead of |UINT_MAX| in case.
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int ret = _write(fd, in, std::min(size_t{INT_MAX}, num));
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#else
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ssize_t ret;
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do {
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ret = write(fd, in, num);
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} while (ret == -1 && errno == EINVAL);
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#endif
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if (ret < 0) {
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*out_bytes_written = 0;
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return false;
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}
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*out_bytes_written = ret;
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return true;
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}
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ScopedFILE FDToFILE(ScopedFD fd, const char *mode) {
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ScopedFILE ret;
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#if defined(OPENSSL_WINDOWS)
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ret.reset(_fdopen(fd.get(), mode));
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#else
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ret.reset(fdopen(fd.get(), mode));
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#endif
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// |fdopen| takes ownership of |fd| on success.
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if (ret) {
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fd.release();
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}
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return ret;
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}
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