2 * Copyright 2015-2019 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the Apache License 2.0 (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
11 #include <openssl/crypto.h>
12 #include "platform.h" /* for copy_argv() */
13 #include "apps.h" /* for app_malloc() */
15 char **newargv = NULL;
17 static void cleanup_argv(void)
19 OPENSSL_free(newargv);
23 char **copy_argv(int *argc, char *argv[])
26 * The note below is for historical purpose. On VMS now we always
30 * If we have 32-bit pointers everywhere, then we're safe, and
31 * we bypass this mess, as on non-VMS systems.
32 * Problem 1: Compaq/HP C before V7.3 always used 32-bit
33 * pointers for argv[].
34 * Fix 1: For a 32-bit argv[], when we're using 64-bit pointers
35 * everywhere else, we always allocate and use a 64-bit
36 * duplicate of argv[].
37 * Problem 2: Compaq/HP C V7.3 (Alpha, IA64) before ECO1 failed
38 * to NULL-terminate a 64-bit argv[]. (As this was written, the
39 * compiler ECO was available only on IA64.)
40 * Fix 2: Unless advised not to (VMS_TRUST_ARGV), we test a
41 * 64-bit argv[argc] for NULL, and, if necessary, use a
42 * (properly) NULL-terminated (64-bit) duplicate of argv[].
43 * The same code is used in either case to duplicate argv[].
44 * Some of these decisions could be handled in preprocessing,
45 * but the code tends to get even uglier, and the penalty for
46 * deciding at compile- or run-time is tiny.
54 newargv = app_malloc(sizeof(*newargv) * (count + 1), "argv copy");
58 /* Register automatic cleanup on first use */
60 OPENSSL_atexit(cleanup_argv);
62 for (i = 0; i < count; i++)