| /* |
| * |
| * Copyright 2015 gRPC authors. |
| * |
| * 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 <grpc/support/port_platform.h> |
| |
| #ifdef GPR_POSIX_TMPFILE |
| |
| #include "src/core/lib/gpr/tmpfile.h" |
| |
| #include <errno.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <unistd.h> |
| |
| #include <grpc/support/alloc.h> |
| #include <grpc/support/log.h> |
| #include <grpc/support/string_util.h> |
| |
| #include "src/core/lib/gpr/string.h" |
| |
| FILE* gpr_tmpfile(const char* prefix, char** tmp_filename) { |
| FILE* result = nullptr; |
| char* filename_template; |
| int fd; |
| |
| if (tmp_filename != nullptr) *tmp_filename = nullptr; |
| |
| gpr_asprintf(&filename_template, "/tmp/%s_XXXXXX", prefix); |
| GPR_ASSERT(filename_template != nullptr); |
| |
| fd = mkstemp(filename_template); |
| if (fd == -1) { |
| gpr_log(GPR_ERROR, "mkstemp failed for filename_template %s with error %s.", |
| filename_template, strerror(errno)); |
| goto end; |
| } |
| result = fdopen(fd, "w+"); |
| if (result == nullptr) { |
| gpr_log(GPR_ERROR, "Could not open file %s from fd %d (error = %s).", |
| filename_template, fd, strerror(errno)); |
| unlink(filename_template); |
| close(fd); |
| goto end; |
| } |
| |
| end: |
| if (result != nullptr && tmp_filename != nullptr) { |
| *tmp_filename = filename_template; |
| } else { |
| gpr_free(filename_template); |
| } |
| return result; |
| } |
| |
| #endif /* GPR_POSIX_TMPFILE */ |