diff options
Diffstat (limited to 'src/core/lib/gpr/tmpfile_posix.cc')
-rw-r--r-- | src/core/lib/gpr/tmpfile_posix.cc | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/src/core/lib/gpr/tmpfile_posix.cc b/src/core/lib/gpr/tmpfile_posix.cc new file mode 100644 index 0000000000..ffdad335d6 --- /dev/null +++ b/src/core/lib/gpr/tmpfile_posix.cc @@ -0,0 +1,70 @@ +/* + * + * 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 */ |