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/*
*
* Copyright 2015, Google Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#include <grpc/support/port_platform.h>
#ifdef GPR_POSIX_FILE
#include "src/core/support/file.h"
#include <errno.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <grpc/support/alloc.h>
#include <grpc/support/log.h>
#include "src/core/support/string.h"
FILE *gpr_tmpfile(const char *prefix, char **tmp_filename) {
FILE *result = NULL;
char *template;
int fd;
if (tmp_filename != NULL) *tmp_filename = NULL;
gpr_asprintf(&template, "/tmp/%s_XXXXXX", prefix);
GPR_ASSERT(template != NULL);
fd = mkstemp(template);
if (fd == -1) {
gpr_log(GPR_ERROR, "mkstemp failed for template %s with error %s.",
template, strerror(errno));
goto end;
}
result = fdopen(fd, "w+");
if (result == NULL) {
gpr_log(GPR_ERROR, "Could not open file %s from fd %d (error = %s).",
template, fd, strerror(errno));
unlink(template);
close(fd);
goto end;
}
end:
if (result != NULL && tmp_filename != NULL) {
*tmp_filename = template;
} else {
gpr_free(template);
}
return result;
}
#endif /* GPR_POSIX_FILE */
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