85 lines
1.9 KiB
C
85 lines
1.9 KiB
C
/*
|
|
* 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
|