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/*
* Check decoding of prctl PR_GET_NAME/PR_SET_NAME operations.
*
* Copyright (c) 2016 Eugene Syromyatnikov <evgsyr@gmail.com>
* Copyright (c) 2016 Dmitry V. Levin <ldv@altlinux.org>
* Copyright (c) 2016-2018 The strace developers.
* All rights reserved.
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "tests.h"
#ifdef HAVE_PRCTL
# include <sys/prctl.h>
#endif
#if defined HAVE_PRCTL && defined PR_GET_NAME && defined PR_SET_NAME
# include <stdio.h>
# include <string.h>
# include <unistd.h>
int
main(void)
{
static const char str[] = "0123456789abcdef";
static const int len = sizeof(str) - 1;
char *name = tail_memdup(str, sizeof(str));
int i;
int rc;
rc = prctl(PR_SET_NAME, NULL);
printf("prctl(PR_SET_NAME, NULL) = %s\n", sprintrc(rc));
for (i = 0; i <= len; ++i) {
rc = prctl(PR_SET_NAME, name + len - i);
printf("prctl(PR_SET_NAME, \"%.*s\"%s) = %s\n",
i < len - 1 ? i : len - 1,
str + len - i,
i < len - 1 ? "" : "...",
sprintrc(rc));
}
*name = -1;
++name;
memcpy(name, str, len);
for (i = 0; i <= len; ++i) {
rc = prctl(PR_SET_NAME, name + len - i);
if (i < len - 1)
printf("prctl(PR_SET_NAME, %p) = %s\n",
name + len - i, sprintrc(rc));
else
printf("prctl(PR_SET_NAME, \"%.*s\"...) = %s\n",
len - 1, str + len - i, sprintrc(rc));
}
rc = prctl(PR_GET_NAME, NULL);
printf("prctl(PR_GET_NAME, NULL) = %s\n", sprintrc(rc));
for (i = 0; i < len; ++i) {
rc = prctl(PR_GET_NAME, name + len - i);
printf("prctl(PR_GET_NAME, %p) = %s\n",
name + len - i, sprintrc(rc));
}
rc = prctl(PR_GET_NAME, name);
if (rc)
printf("prctl(PR_GET_NAME, %p) = %s\n",
name, sprintrc(rc));
else
printf("prctl(PR_GET_NAME, \"%.*s\") = %s\n",
len - 1, name, sprintrc(rc));
puts("+++ exited with 0 +++");
return 0;
}
#else
SKIP_MAIN_UNDEFINED("HAVE_PRCTL && PR_GET_NAME && PR_SET_NAME")
#endif
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